1---------------------------------------- 204 February 2015. Summary of changes for version 20150204: 3 4This release is available at https://acpica.org/downloads 5 6ACPICA kernel-resident subsystem: 7 8Updated all ACPICA copyrights and signons to 2014. Added the 2014 9copyright to all module headers and signons, including the standard Linux 10header. This affects virtually every file in the ACPICA core subsystem, 11iASL compiler, all ACPICA utilities, and the test suites. 12 13Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 14A raw gpe handling mechanism was created to allow better handling of GPE 15storms that aren't easily managed by the normal handler. The raw handler 16allows disabling/renabling of the the GPE so that interrupt storms can be 17avoided in cases where events cannot be timely serviced. In this scenario, 18handlers should use the AcpiSetGpe() API to disable/enable the GPE. This API 19will leave the reference counts undisturbed, thereby preventing unintentional 20clearing of the GPE when the intent in only to temporarily disable it. Raw 21handlers allow enabling and disabling of a GPE by removing GPE register 22locking. As such, raw handlers much provide their own locks while using 23GPE API's to protect access to GPE data structures. 24Lv Zheng 25 26Events: Always modify GPE registers under the GPE lock. 27Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 28values. Reported as bug by joe.liu@apple.com. 29 30Unix makefiles: Separate option to disable optimizations and _FORTIFY_SOURCE. 31This change removes the _FORTIFY_SOURCE flag from the NOOPT disable option and 32creates a separate flag (NOFORTIFY) for this purpose. Some toolchains may 33define _FORTIFY_SOURCE which leads redefined errors when building ACPICA. This 34allows disabling the option without also having to disable optimazations. 35David Box 36 37 Current Release: 38 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 39 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 40 41---------------------------------------- 4207 November 2014. Summary of changes for version 20141107: 43 44This release is available at https://acpica.org/downloads 45 46This release introduces and implements language extensions to ASL that 47provide support for symbolic ("C-style") operators and expressions. These 48language extensions are known collectively as ASL+. 49 50 511) iASL Compiler/Disassembler and Tools: 52 53Disassembler: Fixed a problem with disassembly of the UartSerialBus 54macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 55Box. 56 57Disassembler: Fixed the Unicode macro support to add escape sequences. 58All non-printable ASCII values are emitted as escape sequences, as well 59as the standard escapes for quote and backslash. Ensures that the 60disassembled macro can be correctly recompiled. 61 62iASL: Added Printf/Fprintf macros for formatted output. These macros are 63translated to existing AML Concatenate and Store operations. Printf 64writes to the ASL Debug object. Fprintf allows the specification of an 65ASL name as the target. Only a single format specifier is required, %o, 66since the AML interpreter dynamically converts objects to the required 67type. David E. Box. 68 69 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 70 (Concatenate (Concatenate (Concatenate ("", Arg0), 71 ": Unexpected value for "), Arg1), ", "), Arg2), 72 " at line "), Arg3), Debug) 73 74 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 75 Arg0, Arg1, Arg2, Arg3) 76 77 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 78 ("", Arg1), ": "), Arg0), " Successful"), STR1) 79 80 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 81 82iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 83ASL parse tree before the AML code is generated. This allows blocks of 84ASL code to be removed in order to help locate and identify problem 85devices and/or code. David E. Box. 86 87AcpiExec: Added support (-fi) for an optional namespace object 88initialization file. This file specifies initial values for namespace 89objects as necessary for debugging and testing different ASL code paths 90that may be taken as a result of BIOS options. 91 92 932) Overview of symbolic operator support for ASL (ASL+) 94------------------------------------------------------- 95 96As an extension to the ASL language, iASL implements support for symbolic 97(C-style) operators for math and logical expressions. This can greatly 98simplify ASL code as well as improve both readability and 99maintainability. These language extensions can exist concurrently with 100all legacy ASL code and expressions. 101 102The symbolic extensions are 100% compatible with existing AML 103interpreters, since no new AML opcodes are created. To implement the 104extensions, the iASL compiler transforms the symbolic expressions into 105the legacy ASL/AML equivalents at compile time. 106 107Full symbolic expressions are supported, along with the standard C 108precedence and associativity rules. 109 110Full disassembler support for the symbolic expressions is provided, and 111creates an automatic migration path for existing ASL code to ASL+ code 112via the disassembly process. By default, the disassembler now emits ASL+ 113code with symbolic expressions. An option (-dl) is provided to force the 114disassembler to emit legacy ASL code if desired. 115 116Below is the complete list of the currently supported symbolic operators 117with examples. See the iASL User Guide for additional information. 118 119 120ASL+ Syntax Legacy ASL Equivalent 121----------- --------------------- 122 123 // Math operators 124 125Z = X + Y Add (X, Y, Z) 126Z = X - Y Subtract (X, Y, Z) 127Z = X * Y Multiply (X, Y, Z) 128Z = X / Y Divide (X, Y, , Z) 129Z = X % Y Mod (X, Y, Z) 130Z = X << Y ShiftLeft (X, Y, Z) 131Z = X >> Y ShiftRight (X, Y, Z) 132Z = X & Y And (X, Y, Z) 133Z = X | Y Or (X, Y, Z) 134Z = X ^ Y Xor (X, Y, Z) 135Z = ~X Not (X, Z) 136X++ Increment (X) 137X-- Decrement (X) 138 139 // Logical operators 140 141(X == Y) LEqual (X, Y) 142(X != Y) LNotEqual (X, Y) 143(X < Y) LLess (X, Y) 144(X > Y) LGreater (X, Y) 145(X <= Y) LLessEqual (X, Y) 146(X >= Y) LGreaterEqual (X, Y) 147(X && Y) LAnd (X, Y) 148(X || Y) LOr (X, Y) 149(!X) LNot (X) 150 151 // Assignment and compound assignment operations 152 153X = Y Store (Y, X) 154X += Y Add (X, Y, X) 155X -= Y Subtract (X, Y, X) 156X *= Y Multiply (X, Y, X) 157X /= Y Divide (X, Y, , X) 158X %= Y Mod (X, Y, X) 159X <<= Y ShiftLeft (X, Y, X) 160X >>= Y ShiftRight (X, Y, X) 161X &= Y And (X, Y, X) 162X |= Y Or (X, Y, X) 163X ^= Y Xor (X, Y, X) 164 165 1663) ASL+ Examples: 167----------------- 168 169Legacy ASL: 170 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 171 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 1720x03FB), 173 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 174 { 175 And (MEMB, 0xFFFFFFF0, SRMB) 176 Store (MEMB, Local2) 177 Store (PDBM, Local1) 178 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 179 Store (SRMB, MEMB) 180 Or (PDBM, 0x02, PDBM) 181 } 182 183ASL+ version: 184 If (((R510 & 0x03FB) == 0x02E0) || 185 ((R520 & 0x03FB) == 0x02E0) || 186 ((R530 & 0x03FB) == 0x02E0) || 187 ((R540 & 0x03FB) == 0x02E0)) 188 { 189 SRMB = (MEMB & 0xFFFFFFF0) 190 Local2 = MEMB 191 Local1 = PDBM 192 PDBM &= 0xFFFFFFFFFFFFFFF9 193 MEMB = SRMB 194 PDBM |= 0x02 195 } 196 197Legacy ASL: 198 Store (0x1234, Local1) 199 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 200 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 201 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 202 Store (Index (PKG1, 0x03), Local6) 203 Store (Add (Local3, Local2), Debug) 204 Add (Local1, 0x0F, Local2) 205 Add (Local1, Multiply (Local2, Local3), Local2) 206 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 207 208ASL+ version: 209 Local1 = 0x1234 210 Local3 = (((Local1 + TEST) + 0x20) * Local2) 211 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 212 Local3 = (Local1 + (TEST + (0x20 * Local2))) 213 Local6 = Index (PKG1, 0x03) 214 Debug = (Local3 + Local2) 215 Local2 = (Local1 + 0x0F) 216 Local2 = (Local1 + (Local2 * Local3)) 217 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 218 219 220---------------------------------------- 22126 September 2014. Summary of changes for version 20140926: 222 2231) ACPICA kernel-resident subsystem: 224 225Updated the GPIO operation region handler interface (GeneralPurposeIo). 226In order to support GPIO Connection objects with multiple pins, along 227with the related Field objects, the following changes to the interface 228have been made: The Address is now defined to be the offset in bits of 229the field unit from the previous invocation of a Connection. It can be 230viewed as a "Pin Number Index" into the connection resource descriptor. 231The BitWidth is the exact bit width of the field. It is usually one bit, 232but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 233additional information and examples. 234 235GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 236corresponding _Lxx/_Exx methods are disabled (they may have been enabled 237by the firmware), so that they cannot fire until they are enabled via 238AcpiUpdateAllGpes. Rafael J. Wysocki. 239 240Added a new return flag for the Event/GPE status interfaces -- 241AcpiGetEventStatus and AcpiGetGpeStatus. The new 242ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 243GPE currently has a handler associated with it, and can thus actually 244affect the system. Lv Zheng. 245 246Example Code and Data Size: These are the sizes for the OS-independent 247acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 248debug version of the code includes the debug output trace mechanism and 249has a much larger code and data size. 250 251 Current Release: 252 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 253 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 254 Previous Release: 255 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 256 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 257 2582) iASL Compiler/Disassembler and Tools: 259 260iASL: Fixed a memory allocation/free regression introduced in 20140828 261that could cause the compiler to crash. This was introduced inadvertently 262during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 2631113. 264 265iASL: Removed two error messages that have been found to create false 266positives, until they can be fixed and fully validated (ACPICA BZ 1112): 2671) Illegal forward reference within a method 2682) Illegal reference across two methods 269 270iASL: Implemented a new option (-lm) to create a hardware mapping file 271that summarizes all GPIO, I2C, SPI, and UART connections. This option 272works for both the compiler and disassembler. See the iASL compiler user 273guide for additional information and examples (section 6.4.6). 274 275AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 276version 2. This corrects the AE_BAD_HEADER exception seen on systems with 277a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 278 279AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 280unless STDIN is actually a terminal. Assists with batch-mode processing. 281ACPICA BZ 1114. 282 283Disassembler/AcpiHelp: Added another large group of recognized _HID 284values. 285 286 287---------------------------------------- 28828 August 2014. Summary of changes for version 20140828: 289 2901) ACPICA kernel-resident subsystem: 291 292Fixed a problem related to the internal use of the Timer() operator where 293a 64-bit divide could cause an attempted link to a double-precision math 294library. This divide is not actually necessary, so the code was 295restructured to eliminate it. Lv Zheng. 296 297ACPI 5.1: Added support for the runtime validation of the _DSD package 298(similar to the iASL support). 299 300ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 301SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 302 303Example Code and Data Size: These are the sizes for the OS-independent 304acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 305debug version of the code includes the debug output trace mechanism and 306has a much larger code and data size. 307 308 Current Release: 309 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 310 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 311 Previous Release: 312 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 313 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 314 3152) iASL Compiler/Disassembler and Tools: 316 317AcpiExec: Fixed a problem on unix systems where the original terminal 318state was not always properly restored upon exit. Seen when using the -v 319option. ACPICA BZ 1104. 320 321iASL: Fixed a problem with the validation of the ranges/length within the 322Memory24 resource descriptor. There was a boundary condition when the 323range was equal to the (length -1) caused by the fact that these values 324are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 325 326Disassembler: Fixed a problem with the GpioInt descriptor interrupt 327polarity 328flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 329is 330now supported properly. 331 332ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 333in the disassembler, data table compiler, and table template generator. 334 335iASL: Added a requirement for Device() objects that one of either a _HID 336or _ADR must exist within the scope of a Device, as per the ACPI 337specification. Remove a similar requirement that was incorrectly in place 338for the _DSD object. 339 340iASL: Added error detection for illegal named references within control 341methods that would cause runtime failures. Now trapped as errors are: 1) 342References to objects within a non-parent control method. 2) Forward 343references (within a method) -- for control methods, AML interpreters use 344a one-pass parse of control methods. ACPICA BZ 1008. 345 346iASL: Added error checking for dependencies related to the _PSx power 347methods. ACPICA BZ 1029. 3481) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 349_PS3. 3502) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 351scope. 352 353iASL and table compiler: Cleanup miscellaneous memory leaks by fully 354deploying the existing object and string caches and adding new caches for 355the table compiler. 356 357iASL: Split the huge parser source file into multiple subfiles to improve 358manageability. Generation now requires the M4 macro preprocessor, which 359is part of the Bison distribution on both unix and windows platforms. 360 361AcpiSrc: Fixed and removed all extraneous warnings generated during 362entire ACPICA source code scan and/or conversion. 363 364 365---------------------------------------- 366 36724 July 2014. Summary of changes for version 20140724: 368 369The ACPI 5.1 specification has been released and is available at: 370http://uefi.org/specs/access 371 372 3730) ACPI 5.1 support in ACPICA: 374 375ACPI 5.1 is fully supported in ACPICA as of this release. 376 377New predefined names. Support includes iASL and runtime ACPICA 378validation. 379 _CCA (Cache Coherency Attribute). 380 _DSD (Device-Specific Data). David Box. 381 382Modifications to existing ACPI tables. Support includes headers, iASL 383Data Table compiler, disassembler, and the template generator. 384 FADT - New fields and flags. Graeme Gregory. 385 GTDT - One new subtable and new fields. Tomasz Nowicki. 386 MADT - Two new subtables. Tomasz Nowicki. 387 PCCT - One new subtable. 388 389Miscellaneous. 390 New notification type for System Resource Affinity change events. 391 392 3931) ACPICA kernel-resident subsystem: 394 395Fixed a regression introduced in 20140627 where a fault can happen during 396the deletion of Alias AML namespace objects. The problem affected both 397the core ACPICA and the ACPICA tools including iASL and AcpiExec. 398 399Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 400simple mechanism to enable wake GPEs that have no associated handler or 401control method. Rafael Wysocki. 402 403Updated the AcpiEnableGpe interface to disallow the enable if there is no 404handler or control method associated with the particular GPE. This will 405help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 406 407Updated GPE handling and dispatch by disabling the GPE before clearing 408the status bit for edge-triggered GPEs. Lv Zheng. 409 410Added Timer() support to the AML Debug object. The current timer value is 411now displayed with each invocation of (Store to) the debug object to 412enable simple generation of execution times for AML code (method 413execution for example.) ACPICA BZ 1093. 414 415Example Code and Data Size: These are the sizes for the OS-independent 416acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 417debug version of the code includes the debug output trace mechanism and 418has a much larger code and data size. 419 420 Current Release: 421 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 422 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 423 Previous Release: 424 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 425 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 426 427 4282) iASL Compiler/Disassembler and Tools: 429 430Fixed an issue with the recently added local printf implementation, 431concerning width/precision specifiers that could cause incorrect output. 432Lv Zheng. ACPICA BZ 1094. 433 434Disassembler: Added support to detect buffers that contain UUIDs and 435disassemble them to an invocation of the ToUUID operator. Also emit 436commented descriptions of known ACPI-related UUIDs. 437 438AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 439-u. Adds three new files. 440 441iASL: Update table compiler and disassembler for DMAR table changes that 442were introduced in September 2013. With assistance by David Woodhouse. 443 444---------------------------------------- 44527 June 2014. Summary of changes for version 20140627: 446 4471) ACPICA kernel-resident subsystem: 448 449Formatted Output: Implemented local versions of standard formatted output 450utilities such as printf, etc. Over time, it has been discovered that 451there are in fact many portability issues with printf, and the addition 452of this feature will fix/prevent these issues once and for all. Some 453known issues are summarized below: 454 4551) Output of 64-bit values is not portable. For example, UINT64 is %ull 456for the Linux kernel and is %uI64 for some MSVC versions. 4572) Invoking printf consistently in a manner that is portable across both 45832-bit and 64-bit platforms is difficult at best in many situations. 4593) The output format for pointers varies from system to system (leading 460zeros especially), and leads to inconsistent output from ACPICA across 461platforms. 4624) Certain platform-specific printf formats may conflict with ACPICA use. 4635) If there is no local C library available, ACPICA now has local support 464for printf. 465 466-- To address these printf issues in a complete manner, ACPICA now 467directly implements a small subset of printf format specifiers, only 468those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 469 470Implemented support for ACPICA generation within the EFI environment. 471Initially, the AcpiDump utility is supported in the UEFI shell 472environment. Lv Zheng. 473 474Added a new external interface, AcpiLogError, to improve ACPICA 475portability. This allows the host to redirect error messages from the 476ACPICA utilities. Lv Zheng. 477 478Added and deployed new OSL file I/O interfaces to improve ACPICA 479portability: 480 AcpiOsOpenFile 481 AcpiOsCloseFile 482 AcpiOsReadFile 483 AcpiOsWriteFile 484 AcpiOsGetFileOffset 485 AcpiOsSetFileOffset 486There are C library implementations of these functions in the new file 487service_layers/oslibcfs.c -- however, the functions can be implemented by 488the local host in any way necessary. Lv Zheng. 489 490Implemented a mechanism to disable/enable ACPI table checksum validation 491at runtime. This can be useful when loading tables very early during OS 492initialization when it may not be possible to map the entire table in 493order to compute the checksum. Lv Zheng. 494 495Fixed a buffer allocation issue for the Generic Serial Bus support. 496Originally, a fixed buffer length was used. This change allows for 497variable-length buffers based upon the protocol indicated by the field 498access attributes. Reported by Lan Tianyu. Lv Zheng. 499 500Fixed a problem where an object detached from a namespace node was not 501properly terminated/cleared and could cause a circular list problem if 502reattached. ACPICA BZ 1063. David Box. 503 504Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 505 506Fixed a possible memory leak in an error return path within the function 507AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 508 509Example Code and Data Size: These are the sizes for the OS-independent 510acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 511debug version of the code includes the debug output trace mechanism and 512has a much larger code and data size. 513 514 Current Release: 515 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 516 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 517 Previous Release: 518 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 519 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 520 521 5222) iASL Compiler/Disassembler and Tools: 523 524Disassembler: Add dump of ASCII equivalent text within a comment at the 525end of each line of the output for the Buffer() ASL operator. 526 527AcpiDump: Miscellaneous changes: 528 Fixed repetitive table dump in -n mode. 529 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 530the ACPI 2.0 GUID fails. 531 532iASL: Fixed a problem where the compiler could fault if incorrectly given 533an acpidump output file as input. ACPICA BZ 1088. David Box. 534 535AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 536they are invoked without any arguments. 537 538Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 5391086. Colin Ian King. 540 541Disassembler: Cleaned up a block of code that extracts a parent Op 542object. Added a comment that explains that the parent is guaranteed to be 543valid in this case. ACPICA BZ 1069. 544 545---------------------------------------- 54624 April 2014. Summary of changes for version 20140424: 547 5481) ACPICA kernel-resident subsystem: 549 550Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 551Some of these tables are known to contain a trailing NULL entry. Lv 552Zheng. 553 554Removed an extraneous error message for the case where there are a large 555number of system GPEs (> 124). This was the "32-bit FADT register is too 556long to convert to GAS struct" message, which is irrelevant for GPEs 557since the GPEx_BLK_LEN fields of the FADT are always used instead of the 558(limited capacity) GAS bit length. Also, several changes to ensure proper 559support for GPE numbers > 255, where some "GPE number" fields were 8-bits 560internally. 561 562Implemented and deployed additional configuration support for the public 563ACPICA external interfaces. Entire classes of interfaces can now be 564easily modified or configured out, replaced by stubbed inline functions 565by default. Lv Zheng. 566 567Moved all public ACPICA runtime configuration globals to the public 568ACPICA external interface file for convenience. Also, removed some 569obsolete/unused globals. See the file acpixf.h. Lv Zheng. 570 571Documentation: Added a new section to the ACPICA reference describing the 572maximum number of GPEs that can be supported by the FADT-defined GPEs in 573block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 574reference. 575 576Example Code and Data Size: These are the sizes for the OS-independent 577acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 578debug version of the code includes the debug output trace mechanism and 579has a much larger code and data size. 580 581 Current Release: 582 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 583 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 584 Previous Release: 585 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 586 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 587 588 5892) iASL Compiler/Disassembler and Tools: 590 591iASL and disassembler: Add full support for the LPIT table (Low Power 592Idle Table). Includes support in the disassembler, data table compiler, 593and template generator. 594 595AcpiDump utility: 5961) Add option to force the use of the RSDT (over the XSDT). 5972) Improve validation of the RSDP signature (use 8 chars instead of 4). 598 599iASL: Add check for predefined packages that are too large. For 600predefined names that contain subpackages, check if each subpackage is 601too large. (Check for too small already exists.) 602 603Debugger: Updated the GPE command (which simulates a GPE by executing the 604GPE code paths in ACPICA). The GPE device is now optional, and defaults 605to the GPE 0/1 FADT-defined blocks. 606 607Unix application OSL: Update line-editing support. Add additional error 608checking and take care not to reset terminal attributes on exit if they 609were never set. This should help guarantee that the terminal is always 610left in the previous state on program exit. 611 612---------------------------------------- 61325 March 2014. Summary of changes for version 20140325: 614 6151) ACPICA kernel-resident subsystem: 616 617Updated the auto-serialize feature for control methods. This feature 618automatically serializes all methods that create named objects in order 619to prevent runtime errors. The update adds support to ignore the 620currently executing AML SyncLevel when invoking such a method, in order 621to prevent disruption of any existing SyncLevel priorities that may exist 622in the AML code. Although the use of SyncLevels is relatively rare, this 623change fixes a regression where an AE_AML_MUTEX_ORDER exception can 624appear on some machines starting with the 20140214 release. 625 626Added a new external interface to allow the host to install ACPI tables 627very early, before the namespace is even created. AcpiInstallTable gives 628the host additional flexibility for ACPI table management. Tables can be 629installed directly by the host as if they had originally appeared in the 630XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 631(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 632with additional internal restructuring and cleanup. See the ACPICA 633Reference for interface details. Lv Zheng. 634 635Added validation of the checksum for all incoming dynamically loaded 636tables (via external interfaces or via AML Load/LoadTable operators). Lv 637Zheng. 638 639Updated the use of the AcpiOsWaitEventsComplete interface during Notify 640and GPE handler removal. Restructured calls to eliminate possible race 641conditions. Lv Zheng. 642 643Added a warning for the use/execution of the ASL/AML Unload (table) 644operator. This will help detect and identify machines that use this 645operator if and when it is ever used. This operator has never been seen 646in the field and the usage model and possible side-effects of the drastic 647runtime action of a full table removal are unknown. 648 649Reverted the use of #pragma push/pop which was introduced in the 20140214 650release. It appears that push and pop are not implemented by enough 651compilers to make the use of this feature feasible for ACPICA at this 652time. However, these operators may be deployed in a future ACPICA 653release. 654 655Added the missing EXPORT_SYMBOL macros for the install and remove SCI 656handler interfaces. 657 658Source code generation: 6591) Disabled the use of the "strchr" macro for the gcc-specific 660generation. For some versions of gcc, this macro can periodically expose 661a compiler bug which in turn causes compile-time error(s). 6622) Added support for PPC64 compilation. Colin Ian King. 663 664Example Code and Data Size: These are the sizes for the OS-independent 665acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 666debug version of the code includes the debug output trace mechanism and 667has a much larger code and data size. 668 669 Current Release: 670 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 671 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 672 Previous Release: 673 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 674 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 675 676 6772) iASL Compiler/Disassembler and Tools: 678 679Disassembler: Added several new features to improve the readability of 680the resulting ASL code. Extra information is emitted within comment 681fields in the ASL code: 6821) Known _HID/_CID values are decoded to descriptive text. 6832) Standard values for the Notify() operator are decoded to descriptive 684text. 6853) Target operands are expanded to full pathnames (in a comment) when 686possible. 687 688Disassembler: Miscellaneous updates for extern() handling: 6891) Abort compiler if file specified by -fe option does not exist. 6902) Silence unnecessary warnings about argument count mismatches. 6913) Update warning messages concerning unresolved method externals. 6924) Emit "UnknownObj" keyword for externals whose type cannot be 693determined. 694 695AcpiHelp utility: 6961) Added the -a option to display both the ASL syntax and the AML 697encoding for an input ASL operator. This effectively displays all known 698information about an ASL operator with one AcpiHelp invocation. 6992) Added substring match support (similar to a wildcard) for the -i 700(_HID/PNP IDs) option. 701 702iASL/Disassembler: Since this tool does not yet support execution on big- 703endian machines, added detection of endianness and an error message if 704execution is attempted on big-endian. Support for big-endian within iASL 705is a feature that is on the ACPICA to-be-done list. 706 707AcpiBin utility: 7081) Remove option to extract binary files from an acpidump; this function 709is made obsolete by the AcpiXtract utility. 7102) General cleanup of open files and allocated buffers. 711 712---------------------------------------- 71314 February 2014. Summary of changes for version 20140214: 714 7151) ACPICA kernel-resident subsystem: 716 717Implemented a new mechanism to proactively prevent problems with ill- 718behaved reentrant control methods that create named ACPI objects. This 719behavior is illegal as per the ACPI specification, but is nonetheless 720frequently seen in the field. Previously, this could lead to an 721AE_ALREADY_EXISTS exception if the method was actually entered by more 722than one thread. This new mechanism detects such methods at table load 723time and marks them "serialized" to prevent reentrancy. A new global 724option, AcpiGbl_AutoSerializeMethods, has been added to disable this 725feature if desired. This mechanism and global option obsoletes and 726supersedes the previous AcpiGbl_SerializeAllMethods option. 727 728Added the "Windows 2013" string to the _OSI support. ACPICA will now 729respond TRUE to _OSI queries with this string. It is the stated policy of 730ACPICA to add new strings to the _OSI support as soon as possible after 731they are defined. See the full ACPICA _OSI policy which has been added to 732the utilities/utosi.c file. 733 734Hardened/updated the _PRT return value auto-repair code: 7351) Do not abort the repair on a single subpackage failure, continue to 736check all subpackages. 7372) Add check for the minimum subpackage length (4). 7383) Properly handle extraneous NULL package elements. 739 740Added support to avoid the possibility of infinite loops when traversing 741object linked lists. Never allow an infinite loop, even in the face of 742corrupted object lists. 743 744ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 745pack(pop) directives to ensure that the ACPICA headers are independent of 746compiler settings or other host headers. 747 748Example Code and Data Size: These are the sizes for the OS-independent 749acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 750debug version of the code includes the debug output trace mechanism and 751has a much larger code and data size. 752 753 Current Release: 754 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 755 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 756 Previous Release: 757 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 758 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 759 760 7612) iASL Compiler/Disassembler and Tools: 762 763iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 764first reserved field was incorrectly forced to have a value of zero. This 765change correctly forces the field to have a value of one. ACPICA BZ 1081. 766 767Debugger: Added missing support for the "Extra" and "Data" subobjects 768when displaying object data. 769 770Debugger: Added support to display entire object linked lists when 771displaying object data. 772 773iASL: Removed the obsolete -g option to obtain ACPI tables from the 774Windows registry. This feature has been superseded by the acpidump 775utility. 776 777---------------------------------------- 77814 January 2014. Summary of changes for version 20140114: 779 7801) ACPICA kernel-resident subsystem: 781 782Updated all ACPICA copyrights and signons to 2014. Added the 2014 783copyright to all module headers and signons, including the standard Linux 784header. This affects virtually every file in the ACPICA core subsystem, 785iASL compiler, all ACPICA utilities, and the test suites. 786 787Improved parameter validation for AcpiInstallGpeBlock. Added the 788following checks: 7891) The incoming device handle refers to type ACPI_TYPE_DEVICE. 7902) There is not already a GPE block attached to the device. 791Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 792device. 793 794Correctly support "references" in the ACPI_OBJECT. This change fixes the 795support to allow references (namespace nodes) to be passed as arguments 796to control methods via the evaluate object interface. This is probably 797most useful for testing purposes, however. 798 799Improved support for 32/64 bit physical addresses in printf()-like 800output. This change improves the support for physical addresses in printf 801debug statements and other output on both 32-bit and 64-bit hosts. It 802consistently outputs the appropriate number of bytes for each host. The 803%p specifier is unsatisfactory since it does not emit uniform output on 804all hosts/clib implementations (on some, leading zeros are not supported, 805leading to difficult-to-read output). 806 807Example Code and Data Size: These are the sizes for the OS-independent 808acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 809debug version of the code includes the debug output trace mechanism and 810has a much larger code and data size. 811 812 Current Release: 813 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 814 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 815 Previous Release: 816 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 817 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 818 819 8202) iASL Compiler/Disassembler and Tools: 821 822iASL: Fix a possible fault when using the Connection() operator. Fixes a 823problem if the parent Field definition for the Connection operator refers 824to an operation region that does not exist. ACPICA BZ 1064. 825 826AcpiExec: Load of local test tables is now optional. The utility has the 827capability to load some various tables to test features of ACPICA. 828However, there are enough of them that the output of the utility became 829confusing. With this change, only the required local tables are displayed 830(RSDP, XSDT, etc.) along with the actual tables loaded via the command 831line specification. This makes the default output simler and easier to 832understand. The -el command line option restores the original behavior 833for testing purposes. 834 835AcpiExec: Added support for overlapping operation regions. This change 836expands the simulation of operation regions by supporting regions that 837overlap within the given address space. Supports SystemMemory and 838SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 839 840AcpiExec: Added region handler support for PCI_Config and EC spaces. This 841allows AcpiExec to simulate these address spaces, similar to the current 842support for SystemMemory and SystemIO. 843 844Debugger: Added new command to read/write/compare all namespace objects. 845The command "test objects" will exercise the entire namespace by writing 846new values to each data object, and ensuring that the write was 847successful. The original value is then restored and verified. 848 849Debugger: Added the "test predefined" command. This change makes this 850test public and puts it under the new "test" command. The test executes 851each and every predefined name within the current namespace. 852 853---------------------------------------- 85418 December 2013. Summary of changes for version 20131218: 855 856Global note: The ACPI 5.0A specification was released this month. There 857are no changes needed for ACPICA since this release of ACPI is an 858errata/clarification release. The specification is available at 859acpi.info. 860 861 8621) ACPICA kernel-resident subsystem: 863 864Added validation of the XSDT root table if it is present. Some older 865platforms contain an XSDT that is ill-formed or otherwise invalid (such 866as containing some or all entries that are NULL pointers). This change 867adds a new function to validate the XSDT before actually using it. If the 868XSDT is found to be invalid, ACPICA will now automatically fall back to 869using the RSDT instead. Original implementation by Zhao Yakui. Ported to 870ACPICA and enhanced by Lv Zheng and Bob Moore. 871 872Added a runtime option to ignore the XSDT and force the use of the RSDT. 873This change adds a runtime option that will force ACPICA to use the RSDT 874instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 875requires that an XSDT be used instead of the RSDT, the XSDT has been 876found to be corrupt or ill-formed on some machines. Lv Zheng. 877 878Added a runtime option to favor 32-bit FADT register addresses over the 87964-bit addresses. This change adds an option to favor 32-bit FADT 880addresses when there is a conflict between the 32-bit and 64-bit versions 881of the same register. The default behavior is to use the 64-bit version 882in accordance with the ACPI specification. This can now be overridden via 883the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 884 885During the change above, the internal "Convert FADT" and "Verify FADT" 886functions have been merged to simplify the code, making it easier to 887understand and maintain. ACPICA BZ 933. 888 889Improve exception reporting and handling for GPE block installation. 890Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 891status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 892 893Added helper macros to extract bus/segment numbers from the HEST table. 894This change adds two macros to extract the encoded bus and segment 895numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 896Betty Dall <betty.dall@hp.com> 897 898Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 899by ACPICA. It is not a public macro, so it should have no effect on 900existing OSV code. Lv Zheng. 901 902Example Code and Data Size: These are the sizes for the OS-independent 903acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 904debug version of the code includes the debug output trace mechanism and 905has a much larger code and data size. 906 907 Current Release: 908 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 909 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 910 Previous Release: 911 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 912 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 913 914 9152) iASL Compiler/Disassembler and Tools: 916 917Disassembler: Improved pathname support for emitted External() 918statements. This change adds full pathname support for external names 919that have been resolved internally by the inclusion of additional ACPI 920tables (via the iASL -e option). Without this change, the disassembler 921can emit multiple externals for the same object, or it become confused 922when the Scope() operator is used on an external object. Overall, greatly 923improves the ability to actually recompile the emitted ASL code when 924objects a referenced across multiple ACPI tables. Reported by Michael 925Tsirkin (mst@redhat.com). 926 927Tests/ASLTS: Updated functional control suite to execute with no errors. 928David Box. Fixed several errors related to the testing of the interpreter 929slack mode. Lv Zheng. 930 931iASL: Added support to detect names that are declared within a control 932method, but are unused (these are temporary names that are only valid 933during the time the method is executing). A remark is issued for these 934cases. ACPICA BZ 1022. 935 936iASL: Added full support for the DBG2 table. Adds full disassembler, 937table compiler, and template generator support for the DBG2 table (Debug 938Port 2 table). 939 940iASL: Added full support for the PCCT table, update the table definition. 941Updates the PCCT table definition in the actbl3.h header and adds table 942compiler and template generator support. 943 944iASL: Added an option to emit only error messages (no warnings/remarks). 945The -ve option will enable only error messages, warnings and remarks are 946suppressed. This can simplify debugging when only the errors are 947important, such as when an ACPI table is disassembled and there are many 948warnings and remarks -- but only the actual errors are of real interest. 949 950Example ACPICA code (source/tools/examples): Updated the example code so 951that it builds to an actual working program, not just example code. Added 952ACPI tables and execution of an example control method in the DSDT. Added 953makefile support for Unix generation. 954 955---------------------------------------- 95615 November 2013. Summary of changes for version 20131115: 957 958This release is available at https://acpica.org/downloads 959 960 9611) ACPICA kernel-resident subsystem: 962 963Resource Manager: Fixed loop termination for the "get AML length" 964function. The loop previously had an error termination on a NULL resource 965pointer, which can never happen since the loop simply increments a valid 966resource pointer. This fix changes the loop to terminate with an error on 967an invalid end-of-buffer condition. The problem can be seen as an 968infinite loop by callers to AcpiSetCurrentResources with an invalid or 969corrupted resource descriptor, or a resource descriptor that is missing 970an END_TAG descriptor. Reported by Dan Carpenter 971<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 972 973Table unload and ACPICA termination: Delete all attached data objects 974during namespace node deletion. This fix updates namespace node deletion 975to delete the entire list of attached objects (attached via 976AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 9771024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 978 979ACPICA termination: Added support to delete all objects attached to the 980root namespace node. This fix deletes any and all objects that have been 981attached to the root node via AcpiAttachData. Previously, none of these 982objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 983 984Debug output: Do not emit the function nesting level for the in-kernel 985build. The nesting level is really only useful during a single-thread 986execution. Therefore, only enable this output for the AcpiExec utility. 987Also, only emit the thread ID when executing under AcpiExec (Context 988switches are still always detected and a message is emitted). ACPICA BZ 989972. 990 991Example Code and Data Size: These are the sizes for the OS-independent 992acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 993debug version of the code includes the debug output trace mechanism and 994has a much larger code and data size. 995 996 Current Release: 997 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 998 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 999 Previous Release: 1000 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1001 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1002 1003 10042) iASL Compiler/Disassembler and Tools: 1005 1006AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 1007correct portable POSIX header for terminal control functions. 1008 1009Disassembler: Fixed control method invocation issues related to the use 1010of the CondRefOf() operator. The problem is seen in the disassembly where 1011control method invocations may not be disassembled properly if the 1012control method name has been used previously as an argument to CondRefOf. 1013The solution is to not attempt to emit an external declaration for the 1014CondRefOf target (it is not necessary in the first place). This prevents 1015disassembler object type confusion. ACPICA BZ 988. 1016 1017Unix Makefiles: Added an option to disable compiler optimizations and the 1018_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 1019with optimizations (reportedly, gcc 4.4 for example). This change adds a 1020command line option for make (NOOPT) that disables all compiler 1021optimizations and the _FORTIFY_SOURCE compiler flag. The default 1022optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 10231034. Lv Zheng, Bob Moore. 1024 1025Tests/ASLTS: Added options to specify individual test cases and modes. 1026This allows testers running aslts.sh to optionally specify individual 1027test modes and test cases. Also added an option to disable the forced 1028generation of the ACPICA tools from source if desired. Lv Zheng. 1029 1030---------------------------------------- 103127 September 2013. Summary of changes for version 20130927: 1032 1033This release is available at https://acpica.org/downloads 1034 1035 10361) ACPICA kernel-resident subsystem: 1037 1038Fixed a problem with store operations to reference objects. This change 1039fixes a problem where a Store operation to an ArgX object that contained 1040a 1041reference to a field object did not complete the automatic dereference 1042and 1043then write to the actual field object. Instead, the object type of the 1044field object was inadvertently changed to match the type of the source 1045operand. The new behavior will actually write to the field object (buffer 1046field or field unit), thus matching the correct ACPI-defined behavior. 1047 1048Implemented support to allow the host to redefine individual OSL 1049prototypes. This change enables the host to redefine OSL prototypes found 1050in the acpiosxf.h file. This allows the host to implement OSL interfaces 1051with a macro or inlined function. Further, it allows the host to add any 1052additional required modifiers such as __iomem, __init, __exit, etc., as 1053necessary on a per-interface basis. Enables maximum flexibility for the 1054OSL interfaces. Lv Zheng. 1055 1056Hardcoded the access width for the FADT-defined reset register. The ACPI 1057specification requires the reset register width to be 8 bits. ACPICA now 1058hardcodes the width to 8 and ignores the FADT width value. This provides 1059compatibility with other ACPI implementations that have allowed BIOS code 1060with bad register width values to go unnoticed. Matthew Garett, Bob 1061Moore, 1062Lv Zheng. 1063 1064Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 1065used 1066in the OSL header (acpiosxf). The change modifies the position of this 1067macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 1068build issues if the OSL defines the implementation of the interface to be 1069an inline stub function. Lv Zheng. 1070 1071Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 1072initialization interfaces. This change adds a new macro for the main init 1073and terminate external interfaces in order to support hosts that require 1074additional or different processing for these functions. Changed from 1075ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 1076Zheng, Bob Moore. 1077 1078Cleaned up the memory allocation macros for configurability. In the 1079common 1080case, the ACPI_ALLOCATE and related macros now resolve directly to their 1081respective AcpiOs* OSL interfaces. Two options: 10821) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 1083default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 10842) For AcpiExec (and for debugging), the macros can optionally be 1085resolved 1086to the local ACPICA interfaces that track each allocation (local tracking 1087is used to immediately detect memory leaks). 1088Lv Zheng. 1089 1090Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 1091to predefine this macro to either TRUE or FALSE during the system build. 1092 1093Replaced __FUNCTION_ with __func__ in the gcc-specific header. 1094 1095Example Code and Data Size: These are the sizes for the OS-independent 1096acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1097debug version of the code includes the debug output trace mechanism and 1098has a much larger code and data size. 1099 1100 Current Release: 1101 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1102 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1103 Previous Release: 1104 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1105 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1106 1107 11082) iASL Compiler/Disassembler and Tools: 1109 1110iASL: Implemented wildcard support for the -e option. This simplifies use 1111when there are many SSDTs that must be included to resolve external 1112method 1113declarations. ACPICA BZ 1041. Example: 1114 iasl -e ssdt*.dat -d dsdt.dat 1115 1116AcpiExec: Add history/line-editing for Unix/Linux systems. This change 1117adds a portable module that implements full history and limited line 1118editing for Unix and Linux systems. It does not use readline() due to 1119portability issues. Instead it uses the POSIX termio interface to put the 1120terminal in raw input mode so that the various special keys can be 1121trapped 1122(such as up/down-arrow for history support and left/right-arrow for line 1123editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 1124 1125AcpiXtract: Add support to handle (ignore) "empty" lines containing only 1126one or more spaces. This provides compatible with early or different 1127versions of the AcpiDump utility. ACPICA BZ 1044. 1128 1129AcpiDump: Do not ignore tables that contain only an ACPI table header. 1130Apparently, some BIOSs create SSDTs that contain an ACPI table header but 1131no other data. This change adds support to dump these tables. Any tables 1132shorter than the length of an ACPI table header remain in error (an error 1133message is emitted). Reported by Yi Li. 1134 1135Debugger: Echo actual command along with the "unknown command" message. 1136 1137---------------------------------------- 113823 August 2013. Summary of changes for version 20130823: 1139 11401) ACPICA kernel-resident subsystem: 1141 1142Implemented support for host-installed System Control Interrupt (SCI) 1143handlers. Certain ACPI functionality requires the host to handle raw 1144SCIs. For example, the "SCI Doorbell" that is defined for memory power 1145state support requires the host device driver to handle SCIs to examine 1146if the doorbell has been activated. Multiple SCI handlers can be 1147installed to allow for future expansion. New external interfaces are 1148AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 1149details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 1150 1151Operation region support: Never locally free the handler "context" 1152pointer. This change removes some dangerous code that attempts to free 1153the handler context pointer in some (rare) circumstances. The owner of 1154the handler owns this pointer and the ACPICA code should never touch it. 1155Although not seen to be an issue in any kernel, it did show up as a 1156problem (fault) under AcpiExec. Also, set the internal storage field for 1157the context pointer to zero when the region is deactivated, simply for 1158sanity. David Box. ACPICA BZ 1039. 1159 1160AcpiRead: On error, do not modify the return value target location. If an 1161error happens in the middle of a split 32/32 64-bit I/O operation, do not 1162modify the target of the return value pointer. Makes the code consistent 1163with the rest of ACPICA. Bjorn Helgaas. 1164 1165Example Code and Data Size: These are the sizes for the OS-independent 1166acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1167debug version of the code includes the debug output trace mechanism and 1168has a much larger code and data size. 1169 1170 Current Release: 1171 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1172 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1173 Previous Release: 1174 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1175 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 1176 1177 11782) iASL Compiler/Disassembler and Tools: 1179 1180AcpiDump: Implemented several new features and fixed some problems: 11811) Added support to dump the RSDP, RSDT, and XSDT tables. 11822) Added support for multiple table instances (SSDT, UEFI). 11833) Added option to dump "customized" (overridden) tables (-c). 11844) Fixed a problem where some table filenames were improperly 1185constructed. 11865) Improved some error messages, removed some unnecessary messages. 1187 1188iASL: Implemented additional support for disassembly of ACPI tables that 1189contain invocations of external control methods. The -fe<file> option 1190allows the import of a file that specifies the external methods along 1191with the required number of arguments for each -- allowing for the 1192correct disassembly of the table. This is a workaround for a limitation 1193of AML code where the disassembler often cannot determine the number of 1194arguments required for an external control method and generates incorrect 1195ASL code. See the iASL reference for details. ACPICA BZ 1030. 1196 1197Debugger: Implemented a new command (paths) that displays the full 1198pathnames (namepaths) and object types of all objects in the namespace. 1199This is an alternative to the namespace command. 1200 1201Debugger: Implemented a new command (sci) that invokes the SCI dispatch 1202mechanism and any installed handlers. 1203 1204iASL: Fixed a possible segfault for "too many parent prefixes" condition. 1205This can occur if there are too many parent prefixes in a namepath (for 1206example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 1207 1208Application OSLs: Set the return value for the PCI read functions. These 1209functions simply return AE_OK, but should set the return value to zero 1210also. This change implements this. ACPICA BZ 1038. 1211 1212Debugger: Prevent possible command line buffer overflow. Increase the 1213size of a couple of the debugger line buffers, and ensure that overflow 1214cannot happen. ACPICA BZ 1037. 1215 1216iASL: Changed to abort immediately on serious errors during the parsing 1217phase. Due to the nature of ASL, there is no point in attempting to 1218compile these types of errors, and they typically end up causing a 1219cascade of hundreds of errors which obscure the original problem. 1220 1221---------------------------------------- 122225 July 2013. Summary of changes for version 20130725: 1223 12241) ACPICA kernel-resident subsystem: 1225 1226Fixed a problem with the DerefOf operator where references to FieldUnits 1227and BufferFields incorrectly returned the parent object, not the actual 1228value of the object. After this change, a dereference of a FieldUnit 1229reference results in a read operation on the field to get the value, and 1230likewise, the appropriate BufferField value is extracted from the target 1231buffer. 1232 1233Fixed a problem where the _WAK method could cause a fault under these 1234circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 1235method returned no value. The problem is rarely seen because most kernels 1236run ACPICA in slack mode. 1237 1238For the DerefOf operator, a fatal error now results if an attempt is made 1239to dereference a reference (created by the Index operator) to a NULL 1240package element. Provides compatibility with other ACPI implementations, 1241and this behavior will be added to a future version of the ACPI 1242specification. 1243 1244The ACPI Power Management Timer (defined in the FADT) is now optional. 1245This provides compatibility with other ACPI implementations and will 1246appear in the next version of the ACPI specification. If there is no PM 1247Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 1248zero in the FADT indicates no PM timer. 1249 1250Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 1251allows the host to globally enable/disable all vendor strings, all 1252feature strings, or both. Intended to be primarily used for debugging 1253purposes only. Lv Zheng. 1254 1255Expose the collected _OSI data to the host via a global variable. This 1256data tracks the highest level vendor ID that has been invoked by the BIOS 1257so that the host (and potentially ACPICA itself) can change behaviors 1258based upon the age of the BIOS. 1259 1260Example Code and Data Size: These are the sizes for the OS-independent 1261acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1262debug version of the code includes the debug output trace mechanism and 1263has a much larger code and data size. 1264 1265 Current Release: 1266 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1267 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1268 Previous Release: 1269 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1270 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1271 1272 12732) iASL Compiler/Disassembler and Tools: 1274 1275iASL: Created the following enhancements for the -so option (create 1276offset table): 12771)Add offsets for the last nameseg in each namepath for every supported 1278object type 12792)Add support for Processor, Device, Thermal Zone, and Scope objects 12803)Add the actual AML opcode for the parent object of every supported 1281object type 12824)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 1283 1284Disassembler: Emit all unresolved external symbols in a single block. 1285These are external references to control methods that could not be 1286resolved, and thus, the disassembler had to make a guess at the number of 1287arguments to parse. 1288 1289iASL: The argument to the -T option (create table template) is now 1290optional. If not specified, the default table is a DSDT, typically the 1291most common case. 1292 1293---------------------------------------- 129426 June 2013. Summary of changes for version 20130626: 1295 12961) ACPICA kernel-resident subsystem: 1297 1298Fixed an issue with runtime repair of the _CST object. Null or invalid 1299elements were not always removed properly. Lv Zheng. 1300 1301Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 1302FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 1303the maximum number of GPEs is 1016. Use of multiple GPE block devices 1304makes the system-wide number of GPEs essentially unlimited. 1305 1306Example Code and Data Size: These are the sizes for the OS-independent 1307acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1308debug version of the code includes the debug output trace mechanism and 1309has a much larger code and data size. 1310 1311 Current Release: 1312 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1313 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1314 Previous Release: 1315 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1316 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1317 1318 13192) iASL Compiler/Disassembler and Tools: 1320 1321Portable AcpiDump: Implemented full support for the Linux and FreeBSD 1322hosts. Now supports Linux, FreeBSD, and Windows. 1323 1324Disassembler: Added some missing types for the HEST and EINJ tables: "Set 1325Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 1326 1327iASL/Preprocessor: Implemented full support for nested 1328#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 1329 1330Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 1331max. The original purpose of this constraint was to limit the amount of 1332debug output. However, the string function in question (UtPrintString) is 1333now used for the disassembler also, where 256 bytes is insufficient. 1334Reported by RehabMan@GitHub. 1335 1336iASL/DataTables: Fixed some problems and issues with compilation of DMAR 1337tables. ACPICA BZ 999. Lv Zheng. 1338 1339iASL: Fixed a couple of error exit issues that could result in a "Could 1340not delete <file>" message during ASL compilation. 1341 1342AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 1343the actual signatures for these tables are "FACP" and "APIC", 1344respectively. 1345 1346AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 1347tables are allowed to have multiple instances. 1348 1349---------------------------------------- 135017 May 2013. Summary of changes for version 20130517: 1351 13521) ACPICA kernel-resident subsystem: 1353 1354Fixed a regression introduced in version 20130328 for _INI methods. This 1355change fixes a problem introduced in 20130328 where _INI methods are no 1356longer executed properly because of a memory block that was not 1357initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 1358<tomasz.nowicki@linaro.org>. 1359 1360Fixed a possible problem with the new extended sleep registers in the 1361ACPI 13625.0 FADT. Do not use these registers (even if populated) unless the HW- 1363reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 13641020. Lv Zheng. 1365 1366Implemented return value repair code for _CST predefined objects: Sort 1367the 1368list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 1369 1370Implemented a debug-only option to disable loading of SSDTs from the 1371RSDT/XSDT during ACPICA initialization. This can be useful for debugging 1372ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 1373acglobal.h - ACPICA BZ 1005. Lv Zheng. 1374 1375Fixed some issues in the ACPICA initialization and termination code: 1376Tomasz Nowicki <tomasz.nowicki@linaro.org> 13771) Clear events initialized flag upon event component termination. ACPICA 1378BZ 1013. 13792) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 13803) Delete global lock pending lock during termination. ACPICA BZ 1012. 13814) Clear debug buffer global on termination to prevent possible multiple 1382delete. ACPICA BZ 1010. 1383 1384Standardized all switch() blocks across the entire source base. After 1385many 1386years, different formatting for switch() had crept in. This change makes 1387the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 1388 1389Split some files to enhance ACPICA modularity and configurability: 13901) Split buffer dump routines into utilities/utbuffer.c 13912) Split internal error message routines into utilities/uterror.c 13923) Split table print utilities into tables/tbprint.c 13934) Split iASL command-line option processing into asloptions.c 1394 1395Makefile enhancements: 13961) Support for all new files above. 13972) Abort make on errors from any subcomponent. Chao Guan. 13983) Add build support for Apple Mac OS X. Liang Qi. 1399 1400Example Code and Data Size: These are the sizes for the OS-independent 1401acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1402debug version of the code includes the debug output trace mechanism and 1403has a much larger code and data size. 1404 1405 Current Release: 1406 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1407 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1408 Previous Release: 1409 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 1410 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 1411 1412 14132) iASL Compiler/Disassembler and Tools: 1414 1415New utility: Implemented an easily portable version of the acpidump 1416utility to extract ACPI tables from the system (or a file) in an ASCII 1417hex 1418dump format. The top-level code implements the various command line 1419options, file I/O, and table dump routines. To port to a new host, only 1420three functions need to be implemented to get tables -- since this 1421functionality is OS-dependent. See the tools/acpidump/apmain.c module and 1422the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 14231) The Windows version obtains the ACPI tables from the Registry. 14242) The Linux version is under development. 14253) Other hosts - If an OS-dependent module is submitted, it will be 1426distributed with ACPICA. 1427 1428iASL: Fixed a regression for -D preprocessor option (define symbol). A 1429restructuring/change to the initialization sequence caused this option to 1430no longer work properly. 1431 1432iASL: Implemented a mechanism to disable specific warnings and remarks. 1433Adds a new command line option, "-vw <messageid> as well as "#pragma 1434disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 1435 1436iASL: Fix for too-strict package object validation. The package object 1437validation for return values from the predefined names is a bit too 1438strict, it does not allow names references within the package (which will 1439be resolved at runtime.) These types of references cannot be validated at 1440compile time. This change ignores named references within package objects 1441for names that return or define static packages. 1442 1443Debugger: Fixed the 80-character command line limitation for the History 1444command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 1445 1446iASL: Added control method and package support for the -so option 1447(generates AML offset table for BIOS support.) 1448 1449iASL: issue a remark if a non-serialized method creates named objects. If 1450a thread blocks within the method for any reason, and another thread 1451enters the method, the method will fail because an attempt will be made 1452to 1453create the same (named) object twice. In this case, issue a remark that 1454the method should be marked serialized. NOTE: may become a warning later. 1455ACPICA BZ 909. 1456 1457---------------------------------------- 145818 April 2013. Summary of changes for version 20130418: 1459 14601) ACPICA kernel-resident subsystem: 1461 1462Fixed a possible buffer overrun during some rare but specific field unit 1463read operations. This overrun can only happen if the DSDT version is 1 -- 1464meaning that all AML integers are 32 bits -- and the field length is 1465between 33 and 55 bits long. During the read, an internal buffer object 1466is 1467created for the field unit because the field is larger than an integer 1468(32 1469bits). However, in this case, the buffer will be incorrectly written 1470beyond the end because the buffer length is less than the internal 1471minimum 1472of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 1473long, but a full 8 bytes will be written. 1474 1475Updated the Embedded Controller "orphan" _REG method support. This refers 1476to _REG methods under the EC device that have no corresponding operation 1477region. This is allowed by the ACPI specification. This update removes a 1478dependency on the existence an ECDT table. It will execute an orphan _REG 1479method as long as the operation region handler for the EC is installed at 1480the EC device node and not the namespace root. Rui Zhang (original 1481update), Bob Moore (update/integrate). 1482 1483Implemented run-time argument typechecking for all predefined ACPI names 1484(_STA, _BIF, etc.) This change performs object typechecking on all 1485incoming arguments for all predefined names executed via 1486AcpiEvaluateObject. This ensures that ACPI-related device drivers are 1487passing correct object types as well as the correct number of arguments 1488(therefore identifying any issues immediately). Also, the ASL/namespace 1489definition of the predefined name is checked against the ACPI 1490specification for the proper argument count. Adds one new file, 1491nsarguments.c 1492 1493Changed an exception code for the ASL UnLoad() operator. Changed the 1494exception code for the case where the input DdbHandle is invalid, from 1495AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 1496 1497Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 1498global makefile. The use of this flag causes compiler errors on earlier 1499versions of GCC, so it has been removed for compatibility. 1500 1501Miscellaneous cleanup: 15021) Removed some unused/obsolete macros 15032) Fixed a possible memory leak in the _OSI support 15043) Removed an unused variable in the predefined name support 15054) Windows OSL: remove obsolete reference to a memory list field 1506 1507Example Code and Data Size: These are the sizes for the OS-independent 1508acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1509debug version of the code includes the debug output trace mechanism and 1510has a much larger code and data size. 1511 1512 Current Release: 1513 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 1514 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 1515 Previous Release: 1516 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 1517 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 1518 1519 15202) iASL Compiler/Disassembler and Tools: 1521 1522AcpiExec: Added installation of a handler for the SystemCMOS address 1523space. This prevents control method abort if a method accesses this 1524space. 1525 1526AcpiExec: Added support for multiple EC devices, and now install EC 1527operation region handler(s) at the actual EC device instead of the 1528namespace root. This reflects the typical behavior of host operating 1529systems. 1530 1531AcpiExec: Updated to ensure that all operation region handlers are 1532installed before the _REG methods are executed. This prevents a _REG 1533method from aborting if it accesses an address space has no handler. 1534AcpiExec installs a handler for every possible address space. 1535 1536Debugger: Enhanced the "handlers" command to display non-root handlers. 1537This change enhances the handlers command to display handlers associated 1538with individual devices throughout the namespace, in addition to the 1539currently supported display of handlers associated with the root 1540namespace 1541node. 1542 1543ASL Test Suite: Several test suite errors have been identified and 1544resolved, reducing the total error count during execution. Chao Guan. 1545 1546---------------------------------------- 154728 March 2013. Summary of changes for version 20130328: 1548 15491) ACPICA kernel-resident subsystem: 1550 1551Fixed several possible race conditions with the internal object reference 1552counting mechanism. Some of the external ACPICA interfaces update object 1553reference counts without holding the interpreter or namespace lock. This 1554change adds a spinlock to protect reference count updates on the internal 1555ACPICA objects. Reported by and with assistance from Andriy Gapon 1556(avg@FreeBSD.org). 1557 1558FADT support: Removed an extraneous warning for very large GPE register 1559sets. This change removes a size mismatch warning if the legacy length 1560field for a GPE register set is larger than the 64-bit GAS structure can 1561accommodate. GPE register sets can be larger than the 255-bit width 1562limitation of the GAS structure. Linn Crosetto (linn@hp.com). 1563 1564_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 1565return from this interface. Handles a possible timeout case if 1566ACPI_WAIT_FOREVER is modified by the host to be a value less than 1567"forever". Jung-uk Kim. 1568 1569Predefined name support: Add allowed/required argument type information 1570to 1571the master predefined info table. This change adds the infrastructure to 1572enable typechecking on incoming arguments for all predefined 1573methods/objects. It does not actually contain the code that will fully 1574utilize this information, this is still under development. Also condenses 1575some duplicate code for the predefined names into a new module, 1576utilities/utpredef.c 1577 1578Example Code and Data Size: These are the sizes for the OS-independent 1579acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1580debug version of the code includes the debug output trace mechanism and 1581has a much larger code and data size. 1582 1583 Previous Release: 1584 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 1585 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 1586 Current Release: 1587 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 1588 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 1589 1590 15912) iASL Compiler/Disassembler and Tools: 1592 1593iASL: Implemented a new option to simplify the development of ACPI- 1594related 1595BIOS code. Adds support for a new "offset table" output file. The -so 1596option will create a C table containing the AML table offsets of various 1597named objects in the namespace so that BIOS code can modify them easily 1598at 1599boot time. This can simplify BIOS runtime code by eliminating expensive 1600searches for "magic values", enhancing boot times and adding greater 1601reliability. With assistance from Lee Hamel. 1602 1603iASL: Allow additional predefined names to return zero-length packages. 1604Now, all predefined names that are defined by the ACPI specification to 1605return a "variable-length package of packages" are allowed to return a 1606zero length top-level package. This allows the BIOS to tell the host that 1607the requested feature is not supported, and supports existing BIOS/ASL 1608code and practices. 1609 1610iASL: Changed the "result not used" warning to an error. This is the case 1611where an ASL operator is effectively a NOOP because the result of the 1612operation is not stored anywhere. For example: 1613 Add (4, Local0) 1614There is no target (missing 3rd argument), nor is the function return 1615value used. This is potentially a very serious problem -- since the code 1616was probably intended to do something, but for whatever reason, the value 1617was not stored. Therefore, this issue has been upgraded from a warning to 1618an error. 1619 1620AcpiHelp: Added allowable/required argument types to the predefined names 1621info display. This feature utilizes the recent update to the predefined 1622names table (above). 1623 1624---------------------------------------- 162514 February 2013. Summary of changes for version 20130214: 1626 16271) ACPICA Kernel-resident Subsystem: 1628 1629Fixed a possible regression on some hosts: Reinstated the safe return 1630macros (return_ACPI_STATUS, etc.) that ensure that the argument is 1631evaluated only once. Although these macros are not needed for the ACPICA 1632code itself, they are often used by ACPI-related host device drivers 1633where 1634the safe feature may be necessary. 1635 1636Fixed several issues related to the ACPI 5.0 reduced hardware support 1637(SOC): Now ensure that if the platform declares itself as hardware- 1638reduced 1639via the FADT, the following functions become NOOPs (and always return 1640AE_OK) because ACPI is always enabled by definition on these machines: 1641 AcpiEnable 1642 AcpiDisable 1643 AcpiHwGetMode 1644 AcpiHwSetMode 1645 1646Dynamic Object Repair: Implemented additional runtime repairs for 1647predefined name return values. Both of these repairs can simplify code in 1648the related device drivers that invoke these methods: 16491) For the _STR and _MLS names, automatically repair/convert an ASCII 1650string to a Unicode buffer. 16512) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 1652a 1653lone end tag descriptor in the following cases: A Return(0) was executed, 1654a null buffer was returned, or no object at all was returned (non-slack 1655mode only). Adds a new file, nsconvert.c 1656ACPICA BZ 998. Bob Moore, Lv Zheng. 1657 1658Resource Manager: Added additional code to prevent possible infinite 1659loops 1660while traversing corrupted or ill-formed resource template buffers. Check 1661for zero-length resource descriptors in all code that loops through 1662resource templates (the length field is used to index through the 1663template). This change also hardens the external AcpiWalkResources and 1664AcpiWalkResourceBuffer interfaces. 1665 1666Local Cache Manager: Enhanced the main data structure to eliminate an 1667unnecessary mechanism to access the next object in the list. Actually 1668provides a small performance enhancement for hosts that use the local 1669ACPICA cache manager. Jung-uk Kim. 1670 1671Example Code and Data Size: These are the sizes for the OS-independent 1672acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1673debug version of the code includes the debug output trace mechanism and 1674has a much larger code and data size. 1675 1676 Previous Release: 1677 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 1678 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 1679 Current Release: 1680 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 1681 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 1682 1683 16842) iASL Compiler/Disassembler and Tools: 1685 1686iASL/Disassembler: Fixed several issues with the definition of the ACPI 16875.0 RASF table (RAS Feature Table). This change incorporates late changes 1688that were made to the ACPI 5.0 specification. 1689 1690iASL/Disassembler: Added full support for the following new ACPI tables: 1691 1) The MTMR table (MID Timer Table) 1692 2) The VRTC table (Virtual Real Time Clock Table). 1693Includes header file, disassembler, table compiler, and template support 1694for both tables. 1695 1696iASL: Implemented compile-time validation of package objects returned by 1697predefined names. This new feature validates static package objects 1698returned by the various predefined names defined to return packages. Both 1699object types and package lengths are validated, for both parent packages 1700and sub-packages, if any. The code is similar in structure and behavior 1701to 1702the runtime repair mechanism within the AML interpreter and uses the 1703existing predefined name information table. Adds a new file, aslprepkg.c. 1704ACPICA BZ 938. 1705 1706iASL: Implemented auto-detection of binary ACPI tables for disassembly. 1707This feature detects a binary file with a valid ACPI table header and 1708invokes the disassembler automatically. Eliminates the need to 1709specifically invoke the disassembler with the -d option. ACPICA BZ 862. 1710 1711iASL/Disassembler: Added several warnings for the case where there are 1712unresolved control methods during the disassembly. This can potentially 1713cause errors when the output file is compiled, because the disassembler 1714assumes zero method arguments in these cases (it cannot determine the 1715actual number of arguments without resolution/definition of the method). 1716 1717Debugger: Added support to display all resources with a single command. 1718Invocation of the resources command with no arguments will now display 1719all 1720resources within the current namespace. 1721 1722AcpiHelp: Added descriptive text for each ACPICA exception code displayed 1723via the -e option. 1724 1725---------------------------------------- 172617 January 2013. Summary of changes for version 20130117: 1727 17281) ACPICA Kernel-resident Subsystem: 1729 1730Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 1731return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 1732objects to return a package containing one integer, most BIOS code 1733returns 1734two integers and the previous code reflects that. However, we also need 1735to 1736support BIOS code that actually implements to the ACPI spec, and this 1737change reflects this. 1738 1739Fixed two issues with the ACPI_DEBUG_PRINT macros: 17401) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 1741C compilers that require this support. 17422) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 1743ACPI_DEBUG is already used by many of the various hosts. 1744 1745Updated all ACPICA copyrights and signons to 2013. Added the 2013 1746copyright to all module headers and signons, including the standard Linux 1747header. This affects virtually every file in the ACPICA core subsystem, 1748iASL compiler, all ACPICA utilities, and the test suites. 1749 1750Example Code and Data Size: These are the sizes for the OS-independent 1751acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1752debug version of the code includes the debug output trace mechanism and 1753has a much larger code and data size. 1754 1755 Previous Release: 1756 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 1757 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 1758 Current Release: 1759 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 1760 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 1761 1762 17632) iASL Compiler/Disassembler and Tools: 1764 1765Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 1766prevent a possible fault on some hosts. Some C libraries modify the arg 1767pointer parameter to vfprintf making it difficult to call it twice in the 1768AcpiOsVprintf function. Use a local buffer to workaround this issue. This 1769does not affect the Windows OSL since the Win C library does not modify 1770the arg pointer. Chao Guan, Bob Moore. 1771 1772iASL: Fixed a possible infinite loop when the maximum error count is 1773reached. If an output file other than the .AML file is specified (such as 1774a listing file), and the maximum number of errors is reached, do not 1775attempt to flush data to the output file(s) as the compiler is aborting. 1776This can cause an infinite loop as the max error count code essentially 1777keeps calling itself. 1778 1779iASL/Disassembler: Added an option (-in) to ignore NOOP 1780opcodes/operators. 1781Implemented for both the compiler and the disassembler. Often, the NOOP 1782opcode is used as padding for packages that are changed dynamically by 1783the 1784BIOS. When disassembled and recompiled, these NOOPs will cause syntax 1785errors. This option causes the disassembler to ignore all NOOP opcodes 1786(0xA3), and it also causes the compiler to ignore all ASL source code 1787NOOP 1788statements as well. 1789 1790Debugger: Enhanced the Sleep command to execute all sleep states. This 1791change allows Sleep to be invoked with no arguments and causes the 1792debugger to execute all of the sleep states, 0-5, automatically. 1793 1794---------------------------------------- 179520 December 2012. Summary of changes for version 20121220: 1796 17971) ACPICA Kernel-resident Subsystem: 1798 1799Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 1800alternate entry point for AcpiWalkResources and improves the usability of 1801the resource manager by accepting as input a buffer containing the output 1802of either a _CRS, _PRS, or _AEI method. The key functionality is that the 1803input buffer is not deleted by this interface so that it can be used by 1804the host later. See the ACPICA reference for details. 1805 1806Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 1807(DSDT version < 2). The constant will be truncated and this warning 1808reflects that behavior. 1809 1810Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 1811ExtendedInterrupt, and GpioInt descriptors. This change adds support to 1812both get and set the new wake bit in these descriptors, separately from 1813the existing share bit. Reported by Aaron Lu. 1814 1815Interpreter: Fix Store() when an implicit conversion is not possible. For 1816example, in the cases such as a store of a string to an existing package 1817object, implement the store as a CopyObject(). This is a small departure 1818from the ACPI specification which states that the control method should 1819be 1820aborted in this case. However, the ASLTS suite depends on this behavior. 1821 1822Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 1823macros: check if debug output is currently enabled as soon as possible to 1824minimize performance impact if debug is in fact not enabled. 1825 1826Source code restructuring: Cleanup to improve modularity. The following 1827new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 1828psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 1829Associated makefiles and project files have been updated. 1830 1831Changed an exception code for LoadTable operator. For the case where one 1832of the input strings is too long, change the returned exception code from 1833AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 1834 1835Fixed a possible memory leak in dispatcher error path. On error, delete 1836the mutex object created during method mutex creation. Reported by 1837tim.gardner@canonical.com. 1838 1839Example Code and Data Size: These are the sizes for the OS-independent 1840acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1841debug version of the code includes the debug output trace mechanism and 1842has a much larger code and data size. 1843 1844 Previous Release: 1845 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 1846 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1847 Current Release: 1848 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 1849 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 1850 1851 18522) iASL Compiler/Disassembler and Tools: 1853 1854iASL: Disallow a method call as argument to the ObjectType ASL operator. 1855This change tracks an errata to the ACPI 5.0 document. The AML grammar 1856will not allow the interpreter to differentiate between a method and a 1857method invocation when these are used as an argument to the ObjectType 1858operator. The ACPI specification change is to disallow a method 1859invocation 1860(UserTerm) for the ObjectType operator. 1861 1862Finish support for the TPM2 and CSRT tables in the headers, table 1863compiler, and disassembler. 1864 1865Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 1866always expires immediately if the semaphore is not available. The 1867original 1868code was using a relative-time timeout, but sem_timedwait requires the 1869use 1870of an absolute time. 1871 1872iASL: Added a remark if the Timer() operator is used within a 32-bit 1873table. This operator returns a 64-bit time value that will be truncated 1874within a 32-bit table. 1875 1876iASL Source code restructuring: Cleanup to improve modularity. The 1877following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 1878aslmethod.c, and aslfileio.c. Associated makefiles and project files have 1879been updated. 1880 1881 1882---------------------------------------- 188314 November 2012. Summary of changes for version 20121114: 1884 18851) ACPICA Kernel-resident Subsystem: 1886 1887Implemented a performance enhancement for ACPI/AML Package objects. This 1888change greatly increases the performance of Package objects within the 1889interpreter. It changes the processing of reference counts for packages 1890by 1891optimizing for the most common case where the package sub-objects are 1892either Integers, Strings, or Buffers. Increases the overall performance 1893of 1894the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 18952X.) 1896Chao Guan. ACPICA BZ 943. 1897 1898Implemented and deployed common macros to extract flag bits from resource 1899descriptors. Improves readability and maintainability of the code. Fixes 1900a 1901problem with the UART serial bus descriptor for the number of data bits 1902flags (was incorrectly 2 bits, should be 3). 1903 1904Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 1905of the macros and changed the SETx macros to the style of (destination, 1906source). Also added ACPI_CASTx companion macros. Lv Zheng. 1907 1908Example Code and Data Size: These are the sizes for the OS-independent 1909acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1910debug version of the code includes the debug output trace mechanism and 1911has a much larger code and data size. 1912 1913 Previous Release: 1914 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 1915 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1916 Current Release: 1917 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 1918 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1919 1920 19212) iASL Compiler/Disassembler and Tools: 1922 1923Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 1924adds the ShareAndWake and ExclusiveAndWake flags which were added to the 1925Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 1926 1927Disassembler: Fixed a problem with external declaration generation. Fixes 1928a problem where an incorrect pathname could be generated for an external 1929declaration if the original reference to the object includes leading 1930carats (^). ACPICA BZ 984. 1931 1932Debugger: Completed a major update for the Disassemble<method> command. 1933This command was out-of-date and did not properly disassemble control 1934methods that had any reasonable complexity. This fix brings the command 1935up 1936to the same level as the rest of the disassembler. Adds one new file, 1937dmdeferred.c, which is existing code that is now common with the main 1938disassembler and the debugger disassemble command. ACPICA MZ 978. 1939 1940iASL: Moved the parser entry prototype to avoid a duplicate declaration. 1941Newer versions of Bison emit this prototype, so moved the prototype out 1942of 1943the iASL header to where it is actually used in order to avoid a 1944duplicate 1945declaration. 1946 1947iASL/Tools: Standardized use of the stream I/O functions: 1948 1) Ensure check for I/O error after every fopen/fread/fwrite 1949 2) Ensure proper order of size/count arguments for fread/fwrite 1950 3) Use test of (Actual != Requested) after all fwrite, and most fread 1951 4) Standardize I/O error messages 1952Improves reliability and maintainability of the code. Bob Moore, Lv 1953Zheng. 1954ACPICA BZ 981. 1955 1956Disassembler: Prevent duplicate External() statements. During generation 1957of external statements, detect similar pathnames that are actually 1958duplicates such as these: 1959 External (\ABCD) 1960 External (ABCD) 1961Remove all leading '\' characters from pathnames during the external 1962statement generation so that duplicates will be detected and tossed. 1963ACPICA BZ 985. 1964 1965Tools: Replace low-level I/O with stream I/O functions. Replace 1966open/read/write/close with the stream I/O equivalents 1967fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 1968Moore. 1969 1970AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 1971name header so that AcpiXtract recognizes the output file/table. 1972 1973iASL: Remove obsolete -2 option flag. Originally intended to force the 1974compiler/disassembler into an ACPI 2.0 mode, this was never implemented 1975and the entire concept is now obsolete. 1976 1977---------------------------------------- 197818 October 2012. Summary of changes for version 20121018: 1979 1980 19811) ACPICA Kernel-resident Subsystem: 1982 1983Updated support for the ACPI 5.0 MPST table. Fixes some problems 1984introduced by late changes to the table as it was added to the ACPI 5.0 1985specification. Includes header, disassembler, and data table compiler 1986support as well as a new version of the MPST template. 1987 1988AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 19895.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 1990methods: _HID, _CID, and _UID. 1991 1992Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 1993ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 1994name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 1995names for their various drivers. Affects the AcpiGetObjectInfo external 1996interface, and other internal interfaces as well. 1997 1998Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 1999This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 2000on machines that support non-aligned transfers. Optimizes for this case 2001rather than using a strncpy. With assistance from Zheng Lv. 2002 2003Resource Manager: Small fix for buffer size calculation. Fixed a one byte 2004error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 2005 2006Added a new debug print message for AML mutex objects that are force- 2007released. At control method termination, any currently acquired mutex 2008objects are force-released. Adds a new debug-only message for each one 2009that is released. 2010 2011Audited/updated all ACPICA return macros and the function debug depth 2012counter: 1) Ensure that all functions that use the various TRACE macros 2013also use the appropriate ACPICA return macros. 2) Ensure that all normal 2014return statements surround the return expression (value) with parens to 2015ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 2016Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 2017 2018Global source code changes/maintenance: All extra lines at the start and 2019end of each source file have been removed for consistency. Also, within 2020comments, all new sentences start with a single space instead of a double 2021space, again for consistency across the code base. 2022 2023Example Code and Data Size: These are the sizes for the OS-independent 2024acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2025debug version of the code includes the debug output trace mechanism and 2026has a much larger code and data size. 2027 2028 Previous Release: 2029 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2030 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2031 Current Release: 2032 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2033 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2034 2035 20362) iASL Compiler/Disassembler and Tools: 2037 2038AcpiExec: Improved the algorithm used for memory leak/corruption 2039detection. Added some intelligence to the code that maintains the global 2040list of allocated memory. The list is now ordered by allocated memory 2041address, significantly improving performance. When running AcpiExec on 2042the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 2043on the platform and/or the environment. Note, this performance 2044enhancement affects the AcpiExec utility only, not the kernel-resident 2045ACPICA code. 2046 2047Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 2048the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 2049incorrect table offset reported for invalid opcodes. Report the original 205032-bit value for bad ACPI_NAMEs (as well as the repaired name.) 2051 2052Disassembler: Enhanced the -vt option to emit the binary table data in 2053hex format to assist with debugging. 2054 2055Fixed a potential filename buffer overflow in osunixdir.c. Increased the 2056size of file structure. Colin Ian King. 2057 2058---------------------------------------- 205913 September 2012. Summary of changes for version 20120913: 2060 2061 20621) ACPICA Kernel-resident Subsystem: 2063 2064ACPI 5.0: Added two new notify types for the Hardware Error Notification 2065Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 2066and 2067MCE(6). 2068 2069Table Manager: Merged/removed duplicate code in the root table resize 2070functions. One function is external, the other is internal. Lv Zheng, 2071ACPICA 2072BZ 846. 2073 2074Makefiles: Completely removed the obsolete "Linux" makefiles under 2075acpica/generate/linux. These makefiles are obsolete and have been 2076replaced 2077by 2078the generic unix makefiles under acpica/generate/unix. 2079 2080Makefiles: Ensure that binary files always copied properly. Minor rule 2081change 2082to ensure that the final binary output files are always copied up to the 2083appropriate binary directory (bin32 or bin64.) 2084 2085Example Code and Data Size: These are the sizes for the OS-independent 2086acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2087debug 2088version of the code includes the debug output trace mechanism and has a 2089much 2090larger code and data size. 2091 2092 Previous Release: 2093 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2094 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2095 Current Release: 2096 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2097 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2098 2099 21002) iASL Compiler/Disassembler and Tools: 2101 2102Disassembler: Fixed a possible fault during the disassembly of resource 2103descriptors when a second parse is required because of the invocation of 2104external control methods within the table. With assistance from 2105adq@lidskialf.net. ACPICA BZ 976. 2106 2107iASL: Fixed a namepath optimization problem. An error can occur if the 2108parse 2109node that contains the namepath to be optimized does not have a parent 2110node 2111that is a named object. This change fixes the problem. 2112 2113iASL: Fixed a regression where the AML file is not deleted on errors. The 2114AML 2115output file should be deleted if there are any errors during the 2116compiler. 2117The 2118only exception is if the -f (force output) option is used. ACPICA BZ 974. 2119 2120iASL: Added a feature to automatically increase internal line buffer 2121sizes. 2122Via realloc(), automatically increase the internal line buffer sizes as 2123necessary to support very long source code lines. The current version of 2124the 2125preprocessor requires a buffer long enough to contain full source code 2126lines. 2127This change increases the line buffer(s) if the input lines go beyond the 2128current buffer size. This eliminates errors that occurred when a source 2129code 2130line was longer than the buffer. 2131 2132iASL: Fixed a problem with constant folding in method declarations. The 2133SyncLevel term is a ByteConstExpr, and incorrect code would be generated 2134if a 2135Type3 opcode was used. 2136 2137Debugger: Improved command help support. For incorrect argument count, 2138display 2139full help for the command. For help command itself, allow an argument to 2140specify a command. 2141 2142Test Suites: Several bug fixes for the ASLTS suite reduces the number of 2143errors during execution of the suite. Guan Chao. 2144 2145---------------------------------------- 214616 August 2012. Summary of changes for version 20120816: 2147 2148 21491) ACPICA Kernel-resident Subsystem: 2150 2151Removed all use of the deprecated _GTS and _BFS predefined methods. The 2152_GTS 2153(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 2154deprecated and will probably be removed from the ACPI specification. 2155Windows 2156does not invoke them, and reportedly never will. The final nail in the 2157coffin 2158is that the ACPI specification states that these methods must be run with 2159interrupts off, which is not going to happen in a kernel interpreter. 2160Note: 2161Linux has removed all use of the methods also. It was discovered that 2162invoking these functions caused failures on some machines, probably 2163because 2164they were never tested since Windows does not call them. Affects two 2165external 2166interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 2167ACPICA BZ 969. 2168 2169Implemented support for complex bit-packed buffers returned from the _PLD 2170(Physical Location of Device) predefined method. Adds a new external 2171interface, AcpiDecodePldBuffer that parses the buffer into a more usable 2172C 2173structure. Note: C Bitfields cannot be used for this type of predefined 2174structure since the memory layout of individual bitfields is not defined 2175by 2176the C language. In addition, there are endian concerns where a compiler 2177will 2178change the bitfield ordering based on the machine type. The new ACPICA 2179interface eliminates these issues, and should be called after _PLD is 2180executed. ACPICA BZ 954. 2181 2182Implemented a change to allow a scope change to root (via "Scope (\)") 2183during 2184execution of module-level ASL code (code that is executed at table load 2185time.) Lin Ming. 2186 2187Added the Windows8/Server2012 string for the _OSI method. This change 2188adds 2189a 2190new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 21912012. 2192 2193Added header support for the new ACPI tables DBG2 (Debug Port Table Type 21942) 2195and CSRT (Core System Resource Table). 2196 2197Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 2198names. This simplifies access to the buffers returned by these predefined 2199names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 2200 2201GPE support: Removed an extraneous parameter from the various low-level 2202internal GPE functions. Tang Feng. 2203 2204Removed the linux makefiles from the unix packages. The generate/linux 2205makefiles are obsolete and have been removed from the unix tarball 2206release 2207packages. The replacement makefiles are under generate/unix, and there is 2208a 2209top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 2210 2211Updates for Unix makefiles: 22121) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 22132) Update linker flags (move to end of command line) for AcpiExec 2214utility. 2215Guan Chao. 2216 2217Split ACPICA initialization functions to new file, utxfinit.c. Split from 2218utxface.c to improve modularity and reduce file size. 2219 2220Example Code and Data Size: These are the sizes for the OS-independent 2221acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2222debug version of the code includes the debug output trace mechanism and 2223has a 2224much larger code and data size. 2225 2226 Previous Release: 2227 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2228 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2229 Current Release: 2230 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2231 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2232 2233 22342) iASL Compiler/Disassembler and Tools: 2235 2236iASL: Fixed a problem with constant folding for fixed-length constant 2237expressions. The constant-folding code was not being invoked for constant 2238expressions that allow the use of type 3/4/5 opcodes to generate 2239constants 2240for expressions such as ByteConstExpr, WordConstExpr, etc. This could 2241result 2242in the generation of invalid AML bytecode. ACPICA BZ 970. 2243 2244iASL: Fixed a generation issue on newer versions of Bison. Newer versions 2245apparently automatically emit some of the necessary externals. This 2246change 2247handles these versions in order to eliminate generation warnings. 2248 2249Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 2250 2251Disassembler: Add support to decode _PLD buffers. The decoded buffer 2252appears 2253within comments in the output file. 2254 2255Debugger: Fixed a regression with the "Threads" command where 2256AE_BAD_PARAMETER was always returned. 2257 2258---------------------------------------- 225911 July 2012. Summary of changes for version 20120711: 2260 22611) ACPICA Kernel-resident Subsystem: 2262 2263Fixed a possible fault in the return package object repair code. Fixes a 2264problem that can occur when a lone package object is wrapped with an 2265outer 2266package object in order to force conformance to the ACPI specification. 2267Can 2268affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 2269_DLM, 2270_CSD, _PSD, _TSD. 2271 2272Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 2273PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 2274ARB_DIS bit must be implemented in the host-dependent C3 processor power 2275state 2276support. Note, ARB_DIS is obsolete and only applies to older chipsets, 2277both 2278Intel and other vendors. (for Intel: ICH4-M and earlier) 2279 2280This change removes the code to disable/enable bus master arbitration 2281during 2282suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 2283causes 2284resume problems on some machines. The change has been in use for over 2285seven 2286years within Linux. 2287 2288Implemented two new external interfaces to support host-directed dynamic 2289ACPI 2290table load and unload. They are intended to simplify the host 2291implementation 2292of hot-plug support: 2293 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 2294 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 2295table. 2296See the ACPICA reference for additional details. Adds one new file, 2297components/tables/tbxfload.c 2298 2299Implemented and deployed two new interfaces for errors and warnings that 2300are 2301known to be caused by BIOS/firmware issues: 2302 AcpiBiosError: Prints "ACPI Firmware Error" message. 2303 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 2304Deployed these new interfaces in the ACPICA Table Manager code for ACPI 2305table 2306and FADT errors. Additional deployment to be completed as appropriate in 2307the 2308future. The associated conditional macros are ACPI_BIOS_ERROR and 2309ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 2310ACPICA 2311BZ 2312843. 2313 2314Implicit notify support: ensure that no memory allocation occurs within a 2315critical region. This fix moves a memory allocation outside of the time 2316that a 2317spinlock is held. Fixes issues on systems that do not allow this 2318behavior. 2319Jung-uk Kim. 2320 2321Split exception code utilities and tables into a new file, 2322utilities/utexcep.c 2323 2324Example Code and Data Size: These are the sizes for the OS-independent 2325acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2326debug 2327version of the code includes the debug output trace mechanism and has a 2328much 2329larger code and data size. 2330 2331 Previous Release: 2332 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2333 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2334 Current Release: 2335 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2336 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2337 2338 23392) iASL Compiler/Disassembler and Tools: 2340 2341iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 2342of 23430. Jung-uk Kim. 2344 2345Debugger: Enhanced the "tables" command to emit additional information 2346about 2347the current set of ACPI tables, including the owner ID and flags decode. 2348 2349Debugger: Reimplemented the "unload" command to use the new 2350AcpiUnloadParentTable external interface. This command was disable 2351previously 2352due to need for an unload interface. 2353 2354AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 2355option 2356will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 2357 2358---------------------------------------- 235920 June 2012. Summary of changes for version 20120620: 2360 2361 23621) ACPICA Kernel-resident Subsystem: 2363 2364Implemented support to expand the "implicit notify" feature to allow 2365multiple 2366devices to be notified by a single GPE. This feature automatically 2367generates a 2368runtime device notification in the absence of a BIOS-provided GPE control 2369method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 2370notify is 2371provided by ACPICA for Windows compatibility, and is a workaround for 2372BIOS 2373AML 2374code errors. See the description of the AcpiSetupGpeForWake interface in 2375the 2376APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 2377 2378Changed some comments and internal function names to simplify and ensure 2379correctness of the Linux code translation. No functional changes. 2380 2381Example Code and Data Size: These are the sizes for the OS-independent 2382acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2383debug 2384version of the code includes the debug output trace mechanism and has a 2385much 2386larger code and data size. 2387 2388 Previous Release: 2389 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2390 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2391 Current Release: 2392 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2393 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2394 2395 23962) iASL Compiler/Disassembler and Tools: 2397 2398Disassembler: Added support to emit short, commented descriptions for the 2399ACPI 2400predefined names in order to improve the readability of the disassembled 2401output. ACPICA BZ 959. Changes include: 2402 1) Emit descriptions for all standard predefined names (_INI, _STA, 2403_PRW, 2404etc.) 2405 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 2406 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 2407etc.) 2408 2409AcpiSrc: Fixed several long-standing Linux code translation issues. 2410Argument 2411descriptions in function headers are now translated properly to lower 2412case 2413and 2414underscores. ACPICA BZ 961. Also fixes translation problems such as 2415these: 2416(old -> new) 2417 i_aSL -> iASL 2418 00-7_f -> 00-7F 2419 16_k -> 16K 2420 local_fADT -> local_FADT 2421 execute_oSI -> execute_OSI 2422 2423iASL: Fixed a problem where null bytes were inadvertently emitted into 2424some 2425listing files. 2426 2427iASL: Added the existing debug options to the standard help screen. There 2428are 2429no longer two different help screens. ACPICA BZ 957. 2430 2431AcpiHelp: Fixed some typos in the various predefined name descriptions. 2432Also 2433expand some of the descriptions where appropriate. 2434 2435iASL: Fixed the -ot option (display compile times/statistics). Was not 2436working 2437properly for standard output; only worked for the debug file case. 2438 2439---------------------------------------- 244018 May 2012. Summary of changes for version 20120518: 2441 2442 24431) ACPICA Core Subsystem: 2444 2445Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 2446defined 2447to block until asynchronous events such as notifies and GPEs have 2448completed. 2449Within ACPICA, it is only called before a notify or GPE handler is 2450removed/uninstalled. It also may be useful for the host OS within related 2451drivers such as the Embedded Controller driver. See the ACPICA reference 2452for 2453additional information. ACPICA BZ 868. 2454 2455ACPI Tables: Added a new error message for a possible overflow failure 2456during 2457the conversion of FADT 32-bit legacy register addresses to internal 2458common 245964- 2460bit GAS structure representation. The GAS has a one-byte "bit length" 2461field, 2462thus limiting the register length to 255 bits. ACPICA BZ 953. 2463 2464Example Code and Data Size: These are the sizes for the OS-independent 2465acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2466debug 2467version of the code includes the debug output trace mechanism and has a 2468much 2469larger code and data size. 2470 2471 Previous Release: 2472 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2473 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2474 Current Release: 2475 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2476 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2477 2478 24792) iASL Compiler/Disassembler and Tools: 2480 2481iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 2482macro. 2483This keyword was added late in the ACPI 5.0 release cycle and was not 2484implemented until now. 2485 2486Disassembler: Added support for Operation Region externals. Adds missing 2487support for operation regions that are defined in another table, and 2488referenced locally via a Field or BankField ASL operator. Now generates 2489the 2490correct External statement. 2491 2492Disassembler: Several additional fixes for the External() statement 2493generation 2494related to some ASL operators. Also, order the External() statements 2495alphabetically in the disassembler output. Fixes the External() 2496generation 2497for 2498the Create* field, Alias, and Scope operators: 2499 1) Create* buffer field operators - fix type mismatch warning on 2500disassembly 2501 2) Alias - implement missing External support 2502 3) Scope - fix to make sure all necessary externals are emitted. 2503 2504iASL: Improved pathname support. For include files, merge the prefix 2505pathname 2506with the file pathname and eliminate unnecessary components. Convert 2507backslashes in all pathnames to forward slashes, for readability. Include 2508file 2509pathname changes affect both #include and Include() type operators. 2510 2511iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 2512end 2513of a valid line by inserting a newline and then returning the EOF during 2514the 2515next call to GetNextLine. Prevents the line from being ignored due to EOF 2516condition. 2517 2518iASL: Implemented some changes to enhance the IDE support (-vi option.) 2519Error 2520and Warning messages are now correctly recognized for both the source 2521code 2522browser and the global error and warning counts. 2523 2524---------------------------------------- 252520 April 2012. Summary of changes for version 20120420: 2526 2527 25281) ACPICA Core Subsystem: 2529 2530Implemented support for multiple notify handlers. This change adds 2531support 2532to 2533allow multiple system and device notify handlers on Device, Thermal Zone, 2534and 2535Processor objects. This can simplify the host OS notification 2536implementation. 2537Also re-worked and restructured the entire notify support code to 2538simplify 2539handler installation, handler removal, notify event queuing, and notify 2540dispatch to handler(s). Note: there can still only be two global notify 2541handlers - one for system notifies and one for device notifies. There are 2542no 2543changes to the existing handler install/remove interfaces. Lin Ming, Bob 2544Moore, Rafael Wysocki. 2545 2546Fixed a regression in the package repair code where the object reference 2547count was calculated incorrectly. Regression was introduced in the commit 2548"Support to add Package wrappers". 2549 2550Fixed a couple possible memory leaks in the AML parser, in the error 2551recovery 2552path. Jesper Juhl, Lin Ming. 2553 2554Example Code and Data Size: These are the sizes for the OS-independent 2555acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2556debug version of the code includes the debug output trace mechanism and 2557has a 2558much larger code and data size. 2559 2560 Previous Release: 2561 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2562 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2563 Current Release: 2564 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2565 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2566 2567 25682) iASL Compiler/Disassembler and Tools: 2569 2570iASL: Fixed a problem with the resource descriptor support where the 2571length 2572of the StartDependentFn and StartDependentFnNoPrio descriptors were not 2573included in cumulative descriptor offset, resulting in incorrect values 2574for 2575resource tags within resource descriptors appearing after a 2576StartDependent* 2577descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 2578 2579iASL and Preprocessor: Implemented full support for the #line directive 2580to 2581correctly track original source file line numbers through the .i 2582preprocessor 2583output file - for error and warning messages. 2584 2585iASL: Expand the allowable byte constants for address space IDs. 2586Previously, 2587the allowable range was 0x80-0xFF (user-defined spaces), now the range is 25880x0A-0xFF to allow for custom and new IDs without changing the compiler. 2589 2590iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 2591 2592iASL: Add option to completely disable the preprocessor (-Pn). 2593 2594iASL: Now emit all error/warning messages to standard error (stderr) by 2595default (instead of the previous stdout). 2596 2597ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 2598Update 2599for resource descriptor offset fix above. Update/cleanup error output 2600routines. Enable and send iASL errors/warnings to an error logfile 2601(error.txt). Send all other iASL output to a logfile (compiler.txt). 2602Fixed 2603several extraneous "unrecognized operator" messages. 2604 2605---------------------------------------- 260620 March 2012. Summary of changes for version 20120320: 2607 2608 26091) ACPICA Core Subsystem: 2610 2611Enhanced the sleep/wake interfaces to optionally execute the _GTS method 2612(Going To Sleep) and the _BFS method (Back From Sleep). Windows 2613apparently 2614does not execute these methods, and therefore these methods are often 2615untested. It has been seen on some systems where the execution of these 2616methods causes errors and also prevents the machine from entering S5. It 2617is 2618therefore suggested that host operating systems do not execute these 2619methods 2620by default. In the future, perhaps these methods can be optionally 2621executed 2622based on the age of the system and/or what is the newest version of 2623Windows 2624that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 2625and 2626AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 2627Ming. 2628 2629Fixed a problem where the length of the local/common FADT was set too 2630early. 2631The local FADT table length cannot be set to the common length until the 2632original length has been examined. There is code that checks the table 2633length 2634and sets various fields appropriately. This can affect older machines 2635with 2636early FADT versions. For example, this can cause inadvertent writes to 2637the 2638CST_CNT register. Julian Anastasov. 2639 2640Fixed a mapping issue related to a physical table override. Use the 2641deferred 2642mapping mechanism for tables loaded via the physical override OSL 2643interface. 2644This allows for early mapping before the virtual memory manager is 2645available. 2646Thomas Renninger, Bob Moore. 2647 2648Enhanced the automatic return-object repair code: Repair a common problem 2649with 2650predefined methods that are defined to return a variable-length Package 2651of 2652sub-objects. If there is only one sub-object, some BIOS ASL code 2653mistakenly 2654simply returns the single object instead of a Package with one sub- 2655object. 2656This new support will repair this error by wrapping a Package object 2657around 2658the original object, creating the correct and expected Package with one 2659sub- 2660object. Names that can be repaired in this manner include: _ALR, _CSD, 2661_HPX, 2662_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 2663939. 2664 2665Changed the exception code returned for invalid ACPI paths passed as 2666parameters to external interfaces such as AcpiEvaluateObject. Was 2667AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 2668 2669Example Code and Data Size: These are the sizes for the OS-independent 2670acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2671debug 2672version of the code includes the debug output trace mechanism and has a 2673much 2674larger code and data size. 2675 2676 Previous Release: 2677 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 2678 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2679 Current Release: 2680 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2681 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2682 2683 26842) iASL Compiler/Disassembler and Tools: 2685 2686iASL: Added the infrastructure and initial implementation of a integrated 2687C- 2688like preprocessor. This will simplify BIOS development process by 2689eliminating 2690the need for a separate preprocessing step during builds. On Windows, it 2691also 2692eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 2693features including full #define() macro support are still under 2694development. 2695These preprocessor directives are supported: 2696 #define 2697 #elif 2698 #else 2699 #endif 2700 #error 2701 #if 2702 #ifdef 2703 #ifndef 2704 #include 2705 #pragma message 2706 #undef 2707 #warning 2708In addition, these new command line options are supported: 2709 -D <symbol> Define symbol for preprocessor use 2710 -li Create preprocessed output file (*.i) 2711 -P Preprocess only and create preprocessor output file (*.i) 2712 2713Table Compiler: Fixed a problem where the equals operator within an 2714expression 2715did not work properly. 2716 2717Updated iASL to use the current versions of Bison/Flex. Updated the 2718Windows 2719project file to invoke these tools from the standard location. ACPICA BZ 2720904. 2721Versions supported: 2722 Flex for Windows: V2.5.4 2723 Bison for Windows: V2.4.1 2724 2725---------------------------------------- 272615 February 2012. Summary of changes for version 20120215: 2727 2728 27291) ACPICA Core Subsystem: 2730 2731There have been some major changes to the sleep/wake support code, as 2732described below (a - e). 2733 2734a) The AcpiLeaveSleepState has been split into two interfaces, similar to 2735AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 2736AcpiLeaveSleepStatePrep. This allows the host to perform actions between 2737the 2738time the _BFS method is called and the _WAK method is called. NOTE: all 2739hosts 2740must update their wake/resume code or else sleep/wake will not work 2741properly. 2742Rafael Wysocki. 2743 2744b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 2745_WAK 2746method. Some machines require that the GPEs are enabled before the _WAK 2747method 2748is executed. Thomas Renninger. 2749 2750c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 2751bit. 2752Some BIOS code assumes that WAK_STS will be cleared on resume and use it 2753to 2754determine whether the system is rebooting or resuming. Matthew Garrett. 2755 2756d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 2757Sleep) to 2758match the ACPI specification requirement. Rafael Wysocki. 2759 2760e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 2761registers within the V5 FADT. This support adds two new files: 2762hardware/hwesleep.c implements the support for the new registers. Moved 2763all 2764sleep/wake external interfaces to hardware/hwxfsleep.c. 2765 2766 2767Added a new OSL interface for ACPI table overrides, 2768AcpiOsPhysicalTableOverride. This interface allows the host to override a 2769table via a physical address, instead of the logical address required by 2770AcpiOsTableOverride. This simplifies the host implementation. Initial 2771implementation by Thomas Renninger. The ACPICA implementation creates a 2772single 2773shared function for table overrides that attempts both a logical and a 2774physical override. 2775 2776Expanded the OSL memory read/write interfaces to 64-bit data 2777(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 2778transfer support for GAS register structures passed to AcpiRead and 2779AcpiWrite. 2780 2781Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 2782custom 2783build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 2784model. 2785See the ACPICA reference for details. ACPICA BZ 942. This option removes 2786about 278710% of the code and 5% of the static data, and the following hardware 2788ACPI 2789features become unavailable: 2790 PM Event and Control registers 2791 SCI interrupt (and handler) 2792 Fixed Events 2793 General Purpose Events (GPEs) 2794 Global Lock 2795 ACPI PM timer 2796 FACS table (Waking vectors and Global Lock) 2797 2798Updated the unix tarball directory structure to match the ACPICA git 2799source 2800tree. This ensures that the generic unix makefiles work properly (in 2801generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 2802867. 2803 2804Updated the return value of the _REV predefined method to integer value 5 2805to 2806reflect ACPI 5.0 support. 2807 2808Moved the external ACPI PM timer interface prototypes to the public 2809acpixf.h 2810file where they belong. 2811 2812Example Code and Data Size: These are the sizes for the OS-independent 2813acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2814debug 2815version of the code includes the debug output trace mechanism and has a 2816much 2817larger code and data size. 2818 2819 Previous Release: 2820 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 2821 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 2822 Current Release: 2823 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 2824 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2825 2826 28272) iASL Compiler/Disassembler and Tools: 2828 2829Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 2830descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 2831incorrectly displayed. 2832 2833AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 2834specification. 2835 2836---------------------------------------- 283711 January 2012. Summary of changes for version 20120111: 2838 2839 28401) ACPICA Core Subsystem: 2841 2842Implemented a new mechanism to allow host device drivers to check for 2843address 2844range conflicts with ACPI Operation Regions. Both SystemMemory and 2845SystemIO 2846address spaces are supported. A new external interface, 2847AcpiCheckAddressRange, 2848allows drivers to check an address range against the ACPI namespace. See 2849the 2850ACPICA reference for additional details. Adds one new file, 2851utilities/utaddress.c. Lin Ming, Bob Moore. 2852 2853Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 2854Control 2855and 2856Status registers, update the ACPI 5.0 flags, and update internal data 2857structures to handle an FADT larger than 256 bytes. The size of the ACPI 28585.0 2859FADT is 268 bytes. 2860 2861Updated all ACPICA copyrights and signons to 2012. Added the 2012 2862copyright to 2863all module headers and signons, including the standard Linux header. This 2864affects virtually every file in the ACPICA core subsystem, iASL compiler, 2865and 2866all ACPICA utilities. 2867 2868Example Code and Data Size: These are the sizes for the OS-independent 2869acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2870debug 2871version of the code includes the debug output trace mechanism and has a 2872much 2873larger code and data size. 2874 2875 Previous Release: 2876 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 2877 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 2878 Current Release: 2879 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 2880 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 2881 2882 28832) iASL Compiler/Disassembler and Tools: 2884 2885Disassembler: fixed a problem with the automatic resource tag generation 2886support. Fixes a problem where the resource tags are inadvertently not 2887constructed if the table being disassembled contains external references 2888to 2889control methods. Moved the actual construction of the tags to after the 2890final 2891namespace is constructed (after 2nd parse is invoked due to external 2892control 2893method references.) ACPICA BZ 941. 2894 2895Table Compiler: Make all "generic" operators caseless. These are the 2896operators 2897like UINT8, String, etc. Making these caseless improves ease-of-use. 2898ACPICA BZ 2899934. 2900 2901---------------------------------------- 290223 November 2011. Summary of changes for version 20111123: 2903 29040) ACPI 5.0 Support: 2905 2906This release contains full support for the ACPI 5.0 specification, as 2907summarized below. 2908 2909Reduced Hardware Support: 2910------------------------- 2911 2912This support allows for ACPI systems without the usual ACPI hardware. 2913This 2914support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 2915will 2916not attempt to initialize or use any of the usual ACPI hardware. Note, 2917when 2918this flag is set, all of the following ACPI hardware is assumed to be not 2919present and is not initialized or accessed: 2920 2921 General Purpose Events (GPEs) 2922 Fixed Events (PM1a/PM1b and PM Control) 2923 Power Management Timer and Console Buttons (power/sleep) 2924 Real-time Clock Alarm 2925 Global Lock 2926 System Control Interrupt (SCI) 2927 The FACS is assumed to be non-existent 2928 2929ACPI Tables: 2930------------ 2931 2932All new tables and updates to existing tables are fully supported in the 2933ACPICA headers (for use by device drivers), the disassembler, and the 2934iASL 2935Data Table Compiler. ACPI 5.0 defines these new tables: 2936 2937 BGRT /* Boot Graphics Resource Table */ 2938 DRTM /* Dynamic Root of Trust for Measurement table */ 2939 FPDT /* Firmware Performance Data Table */ 2940 GTDT /* Generic Timer Description Table */ 2941 MPST /* Memory Power State Table */ 2942 PCCT /* Platform Communications Channel Table */ 2943 PMTT /* Platform Memory Topology Table */ 2944 RASF /* RAS Feature table */ 2945 2946Operation Regions/SpaceIDs: 2947--------------------------- 2948 2949All new operation regions are fully supported by the iASL compiler, the 2950disassembler, and the ACPICA runtime code (for dispatch to region 2951handlers.) 2952The new operation region Space IDs are: 2953 2954 GeneralPurposeIo 2955 GenericSerialBus 2956 2957Resource Descriptors: 2958--------------------- 2959 2960All new ASL resource descriptors are fully supported by the iASL 2961compiler, 2962the 2963ASL/AML disassembler, and the ACPICA runtime Resource Manager code 2964(including 2965all new predefined resource tags). New descriptors are: 2966 2967 FixedDma 2968 GpioIo 2969 GpioInt 2970 I2cSerialBus 2971 SpiSerialBus 2972 UartSerialBus 2973 2974ASL/AML Operators, New and Modified: 2975------------------------------------ 2976 2977One new operator is added, the Connection operator, which is used to 2978associate 2979a GeneralPurposeIo or GenericSerialBus resource descriptor with 2980individual 2981field objects within an operation region. Several new protocols are 2982associated 2983with the AccessAs operator. All are fully supported by the iASL compiler, 2984disassembler, and runtime ACPICA AML interpreter: 2985 2986 Connection // Declare Field Connection 2987attributes 2988 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 2989 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 2990Protocol 2991 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 2992 RawDataBuffer // Data type for Vendor Data 2993fields 2994 2995Predefined ASL/AML Objects: 2996--------------------------- 2997 2998All new predefined objects/control-methods are supported by the iASL 2999compiler 3000and the ACPICA runtime validation/repair (arguments and return values.) 3001New 3002predefined names include the following: 3003 3004Standard Predefined Names (Objects or Control Methods): 3005 _AEI, _CLS, _CPC, _CWS, _DEP, 3006 _DLM, _EVT, _GCP, _CRT, _GWS, 3007 _HRV, _PRE, _PSE, _SRT, _SUB. 3008 3009Resource Tags (Names used to access individual fields within resource 3010descriptors): 3011 _DBT, _DPL, _DRS, _END, _FLC, 3012 _IOR, _LIN, _MOD, _PAR, _PHA, 3013 _PIN, _PPI, _POL, _RXL, _SLV, 3014 _SPE, _STB, _TXL, _VEN. 3015 3016ACPICA External Interfaces: 3017--------------------------- 3018 3019Several new interfaces have been defined for use by ACPI-related device 3020drivers and other host OS services: 3021 3022AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 3023to 3024acquire and release AML mutexes that are defined in the DSDT/SSDT tables 3025provided by the BIOS. They are intended to be used in conjunction with 3026the 3027ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 3028mutual exclusion with the AML code/interpreter. 3029 3030AcpiGetEventResources: Returns the (formatted) resource descriptors as 3031defined 3032by the ACPI 5.0 _AEI object (ACPI Event Information). This object 3033provides 3034resource descriptors associated with hardware-reduced platform events, 3035similar 3036to the AcpiGetCurrentResources interface. 3037 3038Operation Region Handlers: For General Purpose IO and Generic Serial Bus 3039operation regions, information about the Connection() object and any 3040optional 3041length information is passed to the region handler within the Context 3042parameter. 3043 3044AcpiBufferToResource: This interface converts a raw AML buffer containing 3045a 3046resource template or resource descriptor to the ACPI_RESOURCE internal 3047format 3048suitable for use by device drivers. Can be used by an operation region 3049handler 3050to convert the Connection() buffer object into a ACPI_RESOURCE. 3051 3052Miscellaneous/Tools/TestSuites: 3053------------------------------- 3054 3055Support for extended _HID names (Four alpha characters instead of three). 3056Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 3057Support for ACPI 5.0 features in the ASLTS test suite. 3058Fully updated documentation (ACPICA and iASL reference documents.) 3059 3060ACPI Table Definition Language: 3061------------------------------- 3062 3063Support for this language was implemented and released as a subsystem of 3064the 3065iASL compiler in 2010. (See the iASL compiler User Guide.) 3066 3067 3068Non-ACPI 5.0 changes for this release: 3069-------------------------------------- 3070 30711) ACPICA Core Subsystem: 3072 3073Fix a problem with operation region declarations where a failure can 3074occur 3075if 3076the region name and an argument that evaluates to an object (such as the 3077region address) are in different namespace scopes. Lin Ming, ACPICA BZ 3078937. 3079 3080Do not abort an ACPI table load if an invalid space ID is found within. 3081This 3082will be caught later if the offending method is executed. ACPICA BZ 925. 3083 3084Fixed an issue with the FFixedHW space ID where the ID was not always 3085recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 3086 3087Fixed a problem with the 32-bit generation of the unix-specific OSL 3088(osunixxf.c). Lin Ming, ACPICA BZ 936. 3089 3090Several changes made to enable generation with the GCC 4.6 compiler. 3091ACPICA BZ 3092935. 3093 3094New error messages: Unsupported I/O requests (not 8/16/32 bit), and 3095Index/Bank 3096field registers out-of-range. 3097 30982) iASL Compiler/Disassembler and Tools: 3099 3100iASL: Implemented the __PATH__ operator, which returns the full pathname 3101of 3102the current source file. 3103 3104AcpiHelp: Automatically display expanded keyword information for all ASL 3105operators. 3106 3107Debugger: Add "Template" command to disassemble/dump resource template 3108buffers. 3109 3110Added a new master script to generate and execute the ASLTS test suite. 3111Automatically handles 32- and 64-bit generation. See tests/aslts.sh 3112 3113iASL: Fix problem with listing generation during processing of the 3114Switch() 3115operator where AML listing was disabled until the entire Switch block was 3116completed. 3117 3118iASL: Improve support for semicolon statement terminators. Fix "invalid 3119character" message for some cases when the semicolon is used. Semicolons 3120are 3121now allowed after every <Term> grammar element. ACPICA BZ 927. 3122 3123iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 3124923. 3125 3126Disassembler: Fix problem with disassembly of the DataTableRegion 3127operator 3128where an inadvertent "Unhandled deferred opcode" message could be 3129generated. 3130 31313) Example Code and Data Size 3132 3133These are the sizes for the OS-independent acpica.lib produced by the 3134Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3135includes the debug output trace mechanism and has a much larger code and 3136data 3137size. 3138 3139 Previous Release: 3140 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3141 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3142 Current Release: 3143 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3144 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3145 3146---------------------------------------- 314722 September 2011. Summary of changes for version 20110922: 3148 31490) ACPI 5.0 News: 3150 3151Support for ACPI 5.0 in ACPICA has been underway for several months and 3152will 3153be released at the same time that ACPI 5.0 is officially released. 3154 3155The ACPI 5.0 specification is on track for release in the next few 3156months. 3157 31581) ACPICA Core Subsystem: 3159 3160Fixed a problem where the maximum sleep time for the Sleep() operator was 3161intended to be limited to two seconds, but was inadvertently limited to 316220 3163seconds instead. 3164 3165Linux and Unix makefiles: Added header file dependencies to ensure 3166correct 3167generation of ACPICA core code and utilities. Also simplified the 3168makefiles 3169considerably through the use of the vpath variable to specify search 3170paths. 3171ACPICA BZ 924. 3172 31732) iASL Compiler/Disassembler and Tools: 3174 3175iASL: Implemented support to check the access length for all fields 3176created to 3177access named Resource Descriptor fields. For example, if a resource field 3178is 3179defined to be two bits, a warning is issued if a CreateXxxxField() is 3180used 3181with an incorrect bit length. This is implemented for all current 3182resource 3183descriptor names. ACPICA BZ 930. 3184 3185Disassembler: Fixed a byte ordering problem with the output of 24-bit and 318656- 3187bit integers. 3188 3189iASL: Fixed a couple of issues associated with variable-length package 3190objects. 1) properly handle constants like One, Ones, Zero -- do not make 3191a 3192VAR_PACKAGE when these are used as a package length. 2) Allow the 3193VAR_PACKAGE 3194opcode (in addition to PACKAGE) when validating object types for 3195predefined 3196names. 3197 3198iASL: Emit statistics for all output files (instead of just the ASL input 3199and 3200AML output). Includes listings, hex files, etc. 3201 3202iASL: Added -G option to the table compiler to allow the compilation of 3203custom 3204ACPI tables. The only part of a table that is required is the standard 320536- 3206byte 3207ACPI header. 3208 3209AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 3210headers), 3211which also adds correct 64-bit support. Also, now all output filenames 3212are 3213completely lower case. 3214 3215AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 3216loading table files. A warning is issued for any such tables. The only 3217exception is an FADT. This also fixes a possible fault when attempting to 3218load 3219non-AML tables. ACPICA BZ 932. 3220 3221AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 3222a 3223missing table terminator could cause a fault when using the -p option. 3224 3225AcpiSrc: Fixed a possible divide-by-zero fault when generating file 3226statistics. 3227 32283) Example Code and Data Size 3229 3230These are the sizes for the OS-independent acpica.lib produced by the 3231Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3232includes the debug output trace mechanism and has a much larger code and 3233data 3234size. 3235 3236 Previous Release (VC 9.0): 3237 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3238 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3239 Current Release (VC 9.0): 3240 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3241 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3242 3243 3244---------------------------------------- 324523 June 2011. Summary of changes for version 20110623: 3246 32471) ACPI CA Core Subsystem: 3248 3249Updated the predefined name repair mechanism to not attempt repair of a 3250_TSS 3251return object if a _PSS object is present. We can only sort the _TSS 3252return 3253package if there is no _PSS within the same scope. This is because if 3254_PSS 3255is 3256present, the ACPI specification dictates that the _TSS Power Dissipation 3257field 3258is to be ignored, and therefore some BIOSs leave garbage values in the 3259_TSS 3260Power field(s). In this case, it is best to just return the _TSS package 3261as- 3262is. Reported by, and fixed with assistance from Fenghua Yu. 3263 3264Added an option to globally disable the control method return value 3265validation 3266and repair. This runtime option can be used to disable return value 3267repair 3268if 3269this is causing a problem on a particular machine. Also added an option 3270to 3271AcpiExec (-dr) to set this disable flag. 3272 3273All makefiles and project files: Major changes to improve generation of 3274ACPICA 3275tools. ACPICA BZ 912: 3276 Reduce default optimization levels to improve compatibility 3277 For Linux, add strict-aliasing=0 for gcc 4 3278 Cleanup and simplify use of command line defines 3279 Cleanup multithread library support 3280 Improve usage messages 3281 3282Linux-specific header: update handling of THREAD_ID and pthread. For the 328332- 3284bit case, improve casting to eliminate possible warnings, especially with 3285the 3286acpica tools. 3287 3288Example Code and Data Size: These are the sizes for the OS-independent 3289acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3290debug 3291version of the code includes the debug output trace mechanism and has a 3292much 3293larger code and data size. 3294 3295 Previous Release (VC 9.0): 3296 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3297 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3298 Current Release (VC 9.0): 3299 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3300 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3301 33022) iASL Compiler/Disassembler and Tools: 3303 3304With this release, a new utility named "acpihelp" has been added to the 3305ACPICA 3306package. This utility summarizes the ACPI specification chapters for the 3307ASL 3308and AML languages. It generates under Linux/Unix as well as Windows, and 3309provides the following functionality: 3310 Find/display ASL operator(s) -- with description and syntax. 3311 Find/display ASL keyword(s) -- with exact spelling and descriptions. 3312 Find/display ACPI predefined name(s) -- with description, number 3313 of arguments, and the return value data type. 3314 Find/display AML opcode name(s) -- with opcode, arguments, and 3315grammar. 3316 Decode/display AML opcode -- with opcode name, arguments, and 3317grammar. 3318 3319Service Layers: Make multi-thread support configurable. Conditionally 3320compile 3321the multi-thread support so that threading libraries will not be linked 3322if 3323not 3324necessary. The only tool that requires multi-thread support is AcpiExec. 3325 3326iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 3327of 3328Bison appear to want the interface to yyerror to be a const char * (or at 3329least this is a problem when generating iASL on some systems.) ACPICA BZ 3330923 3331Pierre Lejeune. 3332 3333Tools: Fix for systems where O_BINARY is not defined. Only used for 3334Windows 3335versions of the tools. 3336 3337---------------------------------------- 333827 May 2011. Summary of changes for version 20110527: 3339 33401) ACPI CA Core Subsystem: 3341 3342ASL Load() operator: Reinstate most restrictions on the incoming ACPI 3343table 3344signature. Now, only allow SSDT, OEMx, and a null signature. History: 3345 1) Originally, we checked the table signature for "SSDT" or "PSDT". 3346 (PSDT is now obsolete.) 3347 2) We added support for OEMx tables, signature "OEM" plus a fourth 3348 "don't care" character. 3349 3) Valid tables were encountered with a null signature, so we just 3350 gave up on validating the signature, (05/2008). 3351 4) We encountered non-AML tables such as the MADT, which caused 3352 interpreter errors and kernel faults. So now, we once again allow 3353 only SSDT, OEMx, and now, also a null signature. (05/2011). 3354 3355Added the missing _TDL predefined name to the global name list in order 3356to 3357enable validation. Affects both the core ACPICA code and the iASL 3358compiler. 3359 3360Example Code and Data Size: These are the sizes for the OS-independent 3361acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3362debug 3363version of the code includes the debug output trace mechanism and has a 3364much 3365larger code and data size. 3366 3367 Previous Release (VC 9.0): 3368 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3369 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3370 Current Release (VC 9.0): 3371 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3372 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3373 33742) iASL Compiler/Disassembler and Tools: 3375 3376Debugger/AcpiExec: Implemented support for "complex" method arguments on 3377the 3378debugger command line. This adds support beyond simple integers -- 3379including 3380Strings, Buffers, and Packages. Includes support for nested packages. 3381Increased the default command line buffer size to accommodate these 3382arguments. 3383See the ACPICA reference for details and syntax. ACPICA BZ 917. 3384 3385Debugger/AcpiExec: Implemented support for "default" method arguments for 3386the 3387Execute/Debug command. Now, the debugger will always invoke a control 3388method 3389with the required number of arguments -- even if the command line 3390specifies 3391none or insufficient arguments. It uses default integer values for any 3392missing 3393arguments. Also fixes a bug where only six method arguments maximum were 3394supported instead of the required seven. 3395 3396Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 3397and 3398also return status in order to prevent buffer overruns. See the ACPICA 3399reference for details and syntax. ACPICA BZ 921 3400 3401iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 3402makefiles to simplify support for the two different but similar parser 3403generators, bison and yacc. 3404 3405Updated the generic unix makefile for gcc 4. The default gcc version is 3406now 3407expected to be 4 or greater, since options specific to gcc 4 are used. 3408 3409---------------------------------------- 341013 April 2011. Summary of changes for version 20110413: 3411 34121) ACPI CA Core Subsystem: 3413 3414Implemented support to execute a so-called "orphan" _REG method under the 3415EC 3416device. This change will force the execution of a _REG method underneath 3417the 3418EC 3419device even if there is no corresponding operation region of type 3420EmbeddedControl. Fixes a problem seen on some machines and apparently is 3421compatible with Windows behavior. ACPICA BZ 875. 3422 3423Added more predefined methods that are eligible for automatic NULL 3424package 3425element removal. This change adds another group of predefined names to 3426the 3427list 3428of names that can be repaired by having NULL package elements dynamically 3429removed. This group are those methods that return a single variable- 3430length 3431package containing simple data types such as integers, buffers, strings. 3432This 3433includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 3434_PSL, 3435_Sx, 3436and _TZD. ACPICA BZ 914. 3437 3438Split and segregated all internal global lock functions to a new file, 3439evglock.c. 3440 3441Updated internal address SpaceID for DataTable regions. Moved this 3442internal 3443space 3444id in preparation for ACPI 5.0 changes that will include some new space 3445IDs. 3446This 3447change should not affect user/host code. 3448 3449Example Code and Data Size: These are the sizes for the OS-independent 3450acpica.lib 3451produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3452version of 3453the code includes the debug output trace mechanism and has a much larger 3454code 3455and 3456data size. 3457 3458 Previous Release (VC 9.0): 3459 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3460 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3461 Current Release (VC 9.0): 3462 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3463 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3464 34652) iASL Compiler/Disassembler and Tools: 3466 3467iASL/DTC: Major update for new grammar features. Allow generic data types 3468in 3469custom ACPI tables. Field names are now optional. Any line can be split 3470to 3471multiple lines using the continuation char (\). Large buffers now use 3472line- 3473continuation character(s) and no colon on the continuation lines. See the 3474grammar 3475update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 3476Moore. 3477 3478iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 3479statements. 3480Since the parser stuffs a "zero" as the return value for these statements 3481(due 3482to 3483the underlying AML grammar), they were seen as "return with value" by the 3484iASL 3485semantic checking. They are now seen correctly as "null" return 3486statements. 3487 3488iASL: Check if a_REG declaration has a corresponding Operation Region. 3489Adds a 3490check for each _REG to ensure that there is in fact a corresponding 3491operation 3492region declaration in the same scope. If not, the _REG method is not very 3493useful 3494since it probably won't be executed. ACPICA BZ 915. 3495 3496iASL/DTC: Finish support for expression evaluation. Added a new 3497expression 3498parser 3499that implements c-style operator precedence and parenthesization. ACPICA 3500bugzilla 3501908. 3502 3503Disassembler/DTC: Remove support for () and <> style comments in data 3504tables. 3505Now 3506that DTC has full expression support, we don't want to have comment 3507strings 3508that 3509start with a parentheses or a less-than symbol. Now, only the standard /* 3510and 3511// 3512comments are supported, as well as the bracket [] comments. 3513 3514AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 3515"unusual" 3516headers in the acpidump file. Update the header validation to support 3517these 3518tables. Problem introduced in previous AcpiXtract version in the change 3519to 3520support "wrong checksum" error messages emitted by acpidump utility. 3521 3522iASL: Add a * option to generate all template files (as a synonym for 3523ALL) 3524as 3525in 3526"iasl -T *" or "iasl -T ALL". 3527 3528iASL/DTC: Do not abort compiler on fatal errors. We do not want to 3529completely 3530abort the compiler on "fatal" errors, simply should abort the current 3531compile. 3532This allows multiple compiles with a single (possibly wildcard) compiler 3533invocation. 3534 3535---------------------------------------- 353616 March 2011. Summary of changes for version 20110316: 3537 35381) ACPI CA Core Subsystem: 3539 3540Fixed a problem caused by a _PRW method appearing at the namespace root 3541scope 3542during the setup of wake GPEs. A fault could occur if a _PRW directly 3543under 3544the 3545root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 3546 3547Implemented support for "spurious" Global Lock interrupts. On some 3548systems, a 3549global lock interrupt can occur without the pending flag being set. Upon 3550a 3551GL 3552interrupt, we now ensure that a thread is actually waiting for the lock 3553before 3554signaling GL availability. Rafael Wysocki, Bob Moore. 3555 3556Example Code and Data Size: These are the sizes for the OS-independent 3557acpica.lib 3558produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3559version of 3560the code includes the debug output trace mechanism and has a much larger 3561code 3562and 3563data size. 3564 3565 Previous Release (VC 9.0): 3566 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3567 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3568 Current Release (VC 9.0): 3569 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3570 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3571 35722) iASL Compiler/Disassembler and Tools: 3573 3574Implemented full support for the "SLIC" ACPI table. Includes support in 3575the 3576header files, disassembler, table compiler, and template generator. Bob 3577Moore, 3578Lin Ming. 3579 3580AcpiXtract: Correctly handle embedded comments and messages from 3581AcpiDump. 3582Apparently some or all versions of acpidump will occasionally emit a 3583comment 3584like 3585"Wrong checksum", etc., into the dump file. This was causing problems for 3586AcpiXtract. ACPICA BZ 905. 3587 3588iASL: Fix the Linux makefile by removing an inadvertent double file 3589inclusion. 3590ACPICA BZ 913. 3591 3592AcpiExec: Update installation of operation region handlers. Install one 3593handler 3594for a user-defined address space. This is used by the ASL test suite 3595(ASLTS). 3596 3597---------------------------------------- 359811 February 2011. Summary of changes for version 20110211: 3599 36001) ACPI CA Core Subsystem: 3601 3602Added a mechanism to defer _REG methods for some early-installed 3603handlers. 3604Most user handlers should be installed before call to 3605AcpiEnableSubsystem. 3606However, Event handlers and region handlers should be installed after 3607AcpiInitializeObjects. Override handlers for the "default" regions should 3608be 3609installed early, however. This change executes all _REG methods for the 3610default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 3611chicken/egg issues between them. ACPICA BZ 848. 3612 3613Implemented an optimization for GPE detection. This optimization will 3614simply 3615ignore GPE registers that contain no enabled GPEs -- there is no need to 3616read the register since this information is available internally. This 3617becomes more important on machines with a large GPE space. ACPICA 3618bugzilla 3619884. Lin Ming. Suggestion from Joe Liu. 3620 3621Removed all use of the highly unreliable FADT revision field. The 3622revision 3623number in the FADT has been found to be completely unreliable and cannot 3624be 3625trusted. Only the actual table length can be used to infer the version. 3626This 3627change updates the ACPICA core and the disassembler so that both no 3628longer 3629even look at the FADT version and instead depend solely upon the FADT 3630length. 3631 3632Fix an unresolved name issue for the no-debug and no-error-message source 3633generation cases. The _AcpiModuleName was left undefined in these cases, 3634but 3635it is actually needed as a parameter to some interfaces. Define 3636_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 3637 3638Split several large files (makefiles and project files updated) 3639 utglobal.c -> utdecode.c 3640 dbcomds.c -> dbmethod.c dbnames.c 3641 dsopcode.c -> dsargs.c dscontrol.c 3642 dsload.c -> dsload2.c 3643 aslanalyze.c -> aslbtypes.c aslwalks.c 3644 3645Example Code and Data Size: These are the sizes for the OS-independent 3646acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3647debug version of the code includes the debug output trace mechanism and 3648has 3649a much larger code and data size. 3650 3651 Previous Release (VC 9.0): 3652 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3653 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3654 Current Release (VC 9.0): 3655 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3656 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3657 36582) iASL Compiler/Disassembler and Tools: 3659 3660iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 3661These are useful C-style macros with the standard definitions. ACPICA 3662bugzilla 898. 3663 3664iASL/DTC: Added support for integer expressions and labels. Support for 3665full 3666expressions for all integer fields in all ACPI tables. Support for labels 3667in 3668"generic" portions of tables such as UEFI. See the iASL reference manual. 3669 3670Debugger: Added a command to display the status of global handlers. The 3671"handlers" command will display op region, fixed event, and miscellaneous 3672global handlers. installation status -- and for op regions, whether 3673default 3674or user-installed handler will be used. 3675 3676iASL: Warn if reserved method incorrectly returns a value. Many 3677predefined 3678names are defined such that they do not return a value. If implemented as 3679a 3680method, issue a warning if such a name explicitly returns a value. ACPICA 3681Bugzilla 855. 3682 3683iASL: Added detection of GPE method name conflicts. Detects a conflict 3684where 3685there are two GPE methods of the form _Lxy and _Exy in the same scope. 3686(For 3687example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 3688 3689iASL/DTC: Fixed a couple input scanner issues with comments and line 3690numbers. Comment remover could get confused and miss a comment ending. 3691Fixed 3692a problem with line counter maintenance. 3693 3694iASL/DTC: Reduced the severity of some errors from fatal to error. There 3695is 3696no need to abort on simple errors within a field definition. 3697 3698Debugger: Simplified the output of the help command. All help output now 3699in 3700a single screen, instead of help subcommands. ACPICA Bugzilla 897. 3701 3702---------------------------------------- 370312 January 2011. Summary of changes for version 20110112: 3704 37051) ACPI CA Core Subsystem: 3706 3707Fixed a race condition between method execution and namespace walks that 3708can 3709possibly cause a fault. The problem was apparently introduced in version 371020100528 as a result of a performance optimization that reduces the 3711number 3712of 3713namespace walks upon method exit by using the delete_namespace_subtree 3714function instead of the delete_namespace_by_owner function used 3715previously. 3716Bug is a missing namespace lock in the delete_namespace_subtree function. 3717dana.myers@oracle.com 3718 3719Fixed several issues and a possible fault with the automatic "serialized" 3720method support. History: This support changes a method to "serialized" on 3721the 3722fly if the method generates an AE_ALREADY_EXISTS error, indicating the 3723possibility that it cannot handle reentrancy. This fix repairs a couple 3724of 3725issues seen in the field, especially on machines with many cores: 3726 3727 1) Delete method children only upon the exit of the last thread, 3728 so as to not delete objects out from under other running threads 3729 (and possibly causing a fault.) 3730 2) Set the "serialized" bit for the method only upon the exit of the 3731 Last thread, so as to not cause deadlock when running threads 3732 attempt to exit. 3733 3) Cleanup the use of the AML "MethodFlags" and internal method flags 3734 so that there is no longer any confusion between the two. 3735 3736 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 3737 3738Debugger: Now lock the namespace for duration of a namespace dump. 3739Prevents 3740issues if the namespace is changing dynamically underneath the debugger. 3741Especially affects temporary namespace nodes, since the debugger displays 3742these also. 3743 3744Updated the ordering of include files. The ACPICA headers should appear 3745before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 3746set 3747any necessary compiler-specific defines, etc. Affects the ACPI-related 3748tools 3749and utilities. 3750 3751Updated all ACPICA copyrights and signons to 2011. Added the 2011 3752copyright 3753to all module headers and signons, including the Linux header. This 3754affects 3755virtually every file in the ACPICA core subsystem, iASL compiler, and all 3756utilities. 3757 3758Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 3759project files for VC++ 6.0 are now obsolete. New project files can be 3760found 3761under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 3762details. 3763 3764Example Code and Data Size: These are the sizes for the OS-independent 3765acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3766debug version of the code includes the debug output trace mechanism and 3767has a 3768much larger code and data size. 3769 3770 Previous Release (VC 6.0): 3771 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 3772 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 3773 Current Release (VC 9.0): 3774 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3775 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3776 37772) iASL Compiler/Disassembler and Tools: 3778 3779iASL: Added generic data types to the Data Table compiler. Add "generic" 3780data 3781types such as UINT32, String, Unicode, etc., to simplify the generation 3782of 3783platform-defined tables such as UEFI. Lin Ming. 3784 3785iASL: Added listing support for the Data Table Compiler. Adds listing 3786support 3787(-l) to display actual binary output for each line of input code. 3788 3789---------------------------------------- 379009 December 2010. Summary of changes for version 20101209: 3791 37921) ACPI CA Core Subsystem: 3793 3794Completed the major overhaul of the GPE support code that was begun in 3795July 37962010. Major features include: removal of _PRW execution in ACPICA (host 3797executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 3798changes to existing interfaces, simplification of GPE handler operation, 3799and 3800a handful of new interfaces: 3801 3802 AcpiUpdateAllGpes 3803 AcpiFinishGpe 3804 AcpiSetupGpeForWake 3805 AcpiSetGpeWakeMask 3806 One new file, evxfgpe.c to consolidate all external GPE interfaces. 3807 3808See the ACPICA Programmer Reference for full details and programming 3809information. See the new section 4.4 "General Purpose Event (GPE) 3810Support" 3811for a full overview, and section 8.7 "ACPI General Purpose Event 3812Management" 3813for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 3814Ming, 3815Bob Moore, Rafael Wysocki. 3816 3817Implemented a new GPE feature for Windows compatibility, the "Implicit 3818Wake 3819GPE Notify". This feature will automatically issue a Notify(2) on a 3820device 3821when a Wake GPE is received if there is no corresponding GPE method or 3822handler. ACPICA BZ 870. 3823 3824Fixed a problem with the Scope() operator during table parse and load 3825phase. 3826During load phase (table load or method execution), the scope operator 3827should 3828not enter the target into the namespace. Instead, it should open a new 3829scope 3830at the target location. Linux BZ 19462, ACPICA BZ 882. 3831 3832Example Code and Data Size: These are the sizes for the OS-independent 3833acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3834debug version of the code includes the debug output trace mechanism and 3835has a 3836much larger code and data size. 3837 3838 Previous Release: 3839 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 3840 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 3841 Current Release: 3842 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3843 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3844 38452) iASL Compiler/Disassembler and Tools: 3846 3847iASL: Relax the alphanumeric restriction on _CID strings. These strings 3848are 3849"bus-specific" per the ACPI specification, and therefore any characters 3850are 3851acceptable. The only checks that can be performed are for a null string 3852and 3853perhaps for a leading asterisk. ACPICA BZ 886. 3854 3855iASL: Fixed a problem where a syntax error that caused a premature EOF 3856condition on the source file emitted a very confusing error message. The 3857premature EOF is now detected correctly. ACPICA BZ 891. 3858 3859Disassembler: Decode the AccessSize within a Generic Address Structure 3860(byte 3861access, word access, etc.) Note, this field does not allow arbitrary bit 3862access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 3863 3864New: AcpiNames utility - Example namespace dump utility. Shows an example 3865of 3866ACPICA configuration for a minimal namespace dump utility. Uses table and 3867namespace managers, but no AML interpreter. Does not add any 3868functionality 3869over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 3870partition and configure ACPICA. ACPICA BZ 883. 3871 3872AML Debugger: Increased the debugger buffer size for method return 3873objects. 3874Was 4K, increased to 16K. Also enhanced error messages for debugger 3875method 3876execution, including the buffer overflow case. 3877 3878---------------------------------------- 387913 October 2010. Summary of changes for version 20101013: 3880 38811) ACPI CA Core Subsystem: 3882 3883Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 3884now 3885clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 3886HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 3887 3888Changed the type of the predefined namespace object _TZ from ThermalZone 3889to 3890Device. This was found to be confusing to the host software that 3891processes 3892the various thermal zones, since _TZ is not really a ThermalZone. 3893However, 3894a 3895Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 3896Zhang. 3897 3898Added Windows Vista SP2 to the list of supported _OSI strings. The actual 3899string is "Windows 2006 SP2". 3900 3901Eliminated duplicate code in AcpiUtExecute* functions. Now that the 3902nsrepair 3903code automatically repairs _HID-related strings, this type of code is no 3904longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 3905878. 3906 3907Example Code and Data Size: These are the sizes for the OS-independent 3908acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3909debug version of the code includes the debug output trace mechanism and 3910has a 3911much larger code and data size. 3912 3913 Previous Release: 3914 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3915 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3916 Current Release: 3917 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3918 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3919 39202) iASL Compiler/Disassembler and Tools: 3921 3922iASL: Implemented additional compile-time validation for _HID strings. 3923The 3924non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 3925length 3926of 3927the string must be exactly seven or eight characters. For both _HID and 3928_CID 3929strings, all characters must be alphanumeric. ACPICA BZ 874. 3930 3931iASL: Allow certain "null" resource descriptors. Some BIOS code creates 3932descriptors that are mostly or all zeros, with the expectation that they 3933will 3934be filled in at runtime. iASL now allows this as long as there is a 3935"resource 3936tag" (name) associated with the descriptor, which gives the ASL a handle 3937needed to modify the descriptor. ACPICA BZ 873. 3938 3939Added single-thread support to the generic Unix application OSL. 3940Primarily 3941for iASL support, this change removes the use of semaphores in the 3942single- 3943threaded ACPICA tools/applications - increasing performance. The 3944_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 3945option. ACPICA BZ 879. 3946 3947AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 3948support 3949for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 3950 3951iASL: Moved all compiler messages to a new file, aslmessages.h. 3952 3953---------------------------------------- 395415 September 2010. Summary of changes for version 20100915: 3955 39561) ACPI CA Core Subsystem: 3957 3958Removed the AcpiOsDerivePciId OSL interface. The various host 3959implementations 3960of this function were not OS-dependent and are now obsolete and can be 3961removed from all host OSLs. This function has been replaced by 3962AcpiHwDerivePciId, which is now part of the ACPICA core code. 3963AcpiHwDerivePciId has been implemented without recursion. Adds one new 3964module, hwpci.c. ACPICA BZ 857. 3965 3966Implemented a dynamic repair for _HID and _CID strings. The following 3967problems are now repaired at runtime: 1) Remove a leading asterisk in the 3968string, and 2) the entire string is uppercased. Both repairs are in 3969accordance with the ACPI specification and will simplify host driver 3970code. 3971ACPICA BZ 871. 3972 3973The ACPI_THREAD_ID type is no longer configurable, internally it is now 3974always UINT64. This simplifies the ACPICA code, especially any printf 3975output. 3976UINT64 is the only common data type for all thread_id types across all 3977operating systems. It is now up to the host OSL to cast the native 3978thread_id 3979type to UINT64 before returning the value to ACPICA (via 3980AcpiOsGetThreadId). 3981Lin Ming, Bob Moore. 3982 3983Added the ACPI_INLINE type to enhance the ACPICA configuration. The 3984"inline" 3985keyword is not standard across compilers, and this type allows inline to 3986be 3987configured on a per-compiler basis. Lin Ming. 3988 3989Made the system global AcpiGbl_SystemAwakeAndRunning publically 3990available. 3991Added an extern for this boolean in acpixf.h. Some hosts utilize this 3992value 3993during suspend/restore operations. ACPICA BZ 869. 3994 3995All code that implements error/warning messages with the "ACPI:" prefix 3996has 3997been moved to a new module, utxferror.c. 3998 3999The UINT64_OVERLAY was moved to utmath.c, which is the only module where 4000it 4001is used. ACPICA BZ 829. Lin Ming, Bob Moore. 4002 4003Example Code and Data Size: These are the sizes for the OS-independent 4004acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4005debug version of the code includes the debug output trace mechanism and 4006has a 4007much larger code and data size. 4008 4009 Previous Release: 4010 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4011 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4012 Current Release: 4013 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4014 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4015 40162) iASL Compiler/Disassembler and Tools: 4017 4018iASL/Disassembler: Write ACPI errors to stderr instead of the output 4019file. 4020This keeps the output files free of random error messages that may 4021originate 4022from within the namespace/interpreter code. Used this opportunity to 4023merge 4024all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 4025866. Lin Ming, Bob Moore. 4026 4027Tools: update some printfs for ansi warnings on size_t. Handle width 4028change 4029of size_t on 32-bit versus 64-bit generations. Lin Ming. 4030 4031---------------------------------------- 403206 August 2010. Summary of changes for version 20100806: 4033 40341) ACPI CA Core Subsystem: 4035 4036Designed and implemented a new host interface to the _OSI support code. 4037This 4038will allow the host to dynamically add or remove multiple _OSI strings, 4039as 4040well as install an optional handler that is called for each _OSI 4041invocation. 4042Also added a new AML debugger command, 'osi' to display and modify the 4043global 4044_OSI string table, and test support in the AcpiExec utility. See the 4045ACPICA 4046reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 4047New Functions: 4048 AcpiInstallInterface - Add an _OSI string. 4049 AcpiRemoveInterface - Delete an _OSI string. 4050 AcpiInstallInterfaceHandler - Install optional _OSI handler. 4051Obsolete Functions: 4052 AcpiOsValidateInterface - no longer used. 4053New Files: 4054 source/components/utilities/utosi.c 4055 4056Re-introduced the support to enable multi-byte transfers for Embedded 4057Controller (EC) operation regions. A reported problem was found to be a 4058bug 4059in the host OS, not in the multi-byte support. Previously, the maximum 4060data 4061size passed to the EC operation region handler was a single byte. There 4062are 4063often EC Fields larger than one byte that need to be transferred, and it 4064is 4065useful for the EC driver to lock these as a single transaction. This 4066change 4067enables single transfers larger than 8 bits. This effectively changes the 4068access to the EC space from ByteAcc to AnyAcc, and will probably require 4069changes to the host OS Embedded Controller driver to enable 16/32/64/256- 4070bit 4071transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 4072 4073Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 4074prototype in acpiosxf.h had the output value pointer as a (void *). 4075It should be a (UINT64 *). This may affect some host OSL code. 4076 4077Fixed a couple problems with the recently modified Linux makefiles for 4078iASL 4079and AcpiExec. These new makefiles place the generated object files in the 4080local directory so that there can be no collisions between the files that 4081are 4082shared between them that are compiled with different options. 4083 4084Example Code and Data Size: These are the sizes for the OS-independent 4085acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4086debug version of the code includes the debug output trace mechanism and 4087has a 4088much larger code and data size. 4089 4090 Previous Release: 4091 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4092 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4093 Current Release: 4094 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4095 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4096 40972) iASL Compiler/Disassembler and Tools: 4098 4099iASL/Disassembler: Added a new option (-da, "disassemble all") to load 4100the 4101namespace from and disassemble an entire group of AML files. Useful for 4102loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 4103and 4104disassembling with one simple command. ACPICA BZ 865. Lin Ming. 4105 4106iASL: Allow multiple invocations of -e option. This change allows 4107multiple 4108uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 4109834. 4110Lin Ming. 4111 4112---------------------------------------- 411302 July 2010. Summary of changes for version 20100702: 4114 41151) ACPI CA Core Subsystem: 4116 4117Implemented several updates to the recently added GPE reference count 4118support. The model for "wake" GPEs is changing to give the host OS 4119complete 4120control of these GPEs. Eventually, the ACPICA core will not execute any 4121_PRW 4122methods, since the host already must execute them. Also, additional 4123changes 4124were made to help ensure that the reference counts are kept in proper 4125synchronization with reality. Rafael J. Wysocki. 4126 41271) Ensure that GPEs are not enabled twice during initialization. 41282) Ensure that GPE enable masks stay in sync with the reference count. 41293) Do not inadvertently enable GPEs when writing GPE registers. 41304) Remove the internal wake reference counter and add new AcpiGpeWakeup 4131interface. This interface will set or clear individual GPEs for wakeup. 41325) Remove GpeType argument from AcpiEnable and AcpiDisable. These 4133interfaces 4134are now used for "runtime" GPEs only. 4135 4136Changed the behavior of the GPE install/remove handler interfaces. The 4137GPE 4138is 4139no longer disabled during this process, as it was found to cause problems 4140on 4141some machines. Rafael J. Wysocki. 4142 4143Reverted a change introduced in version 20100528 to enable Embedded 4144Controller multi-byte transfers. This change was found to cause problems 4145with 4146Index Fields and possibly Bank Fields. It will be reintroduced when these 4147problems have been resolved. 4148 4149Fixed a problem with references to Alias objects within Package Objects. 4150A 4151reference to an Alias within the definition of a Package was not always 4152resolved properly. Aliases to objects like Processors, Thermal zones, 4153etc. 4154were resolved to the actual object instead of a reference to the object 4155as 4156it 4157should be. Package objects are only allowed to contain integer, string, 4158buffer, package, and reference objects. Redhat bugzilla 608648. 4159 4160Example Code and Data Size: These are the sizes for the OS-independent 4161acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4162debug version of the code includes the debug output trace mechanism and 4163has a 4164much larger code and data size. 4165 4166 Previous Release: 4167 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4168 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4169 Current Release: 4170 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4171 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4172 41732) iASL Compiler/Disassembler and Tools: 4174 4175iASL: Implemented a new compiler subsystem to allow definition and 4176compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 4177These 4178are called "ACPI Data Tables", and the new compiler is the "Data Table 4179Compiler". This compiler is intended to simplify the existing error-prone 4180process of creating these tables for the BIOS, as well as allowing the 4181disassembly, modification, recompilation, and override of existing ACPI 4182data 4183tables. See the iASL User Guide for detailed information. 4184 4185iASL: Implemented a new Template Generator option in support of the new 4186Data 4187Table Compiler. This option will create examples of all known ACPI tables 4188that can be used as the basis for table development. See the iASL 4189documentation and the -T option. 4190 4191Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 4192Descriptor Table). 4193 4194Updated the Linux makefiles for iASL and AcpiExec to place the generated 4195object files in the local directory so that there can be no collisions 4196between the shared files between them that are generated with different 4197options. 4198 4199Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 4200Use 4201the #define __APPLE__ to enable this support. 4202 4203---------------------------------------- 420428 May 2010. Summary of changes for version 20100528: 4205 4206Note: The ACPI 4.0a specification was released on April 5, 2010 and is 4207available at www.acpi.info. This is primarily an errata release. 4208 42091) ACPI CA Core Subsystem: 4210 4211Undefined ACPI tables: We are looking for the definitions for the 4212following 4213ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 4214 4215Implemented support to enable multi-byte transfers for Embedded 4216Controller 4217(EC) operation regions. Previously, the maximum data size passed to the 4218EC 4219operation region handler was a single byte. There are often EC Fields 4220larger 4221than one byte that need to be transferred, and it is useful for the EC 4222driver 4223to lock these as a single transaction. This change enables single 4224transfers 4225larger than 8 bits. This effectively changes the access to the EC space 4226from 4227ByteAcc to AnyAcc, and will probably require changes to the host OS 4228Embedded 4229Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 4230bit 4231transfers. Alexey Starikovskiy, Lin Ming 4232 4233Implemented a performance enhancement for namespace search and access. 4234This 4235change enhances the performance of namespace searches and walks by adding 4236a 4237backpointer to the parent in each namespace node. On large namespaces, 4238this 4239change can improve overall ACPI performance by up to 9X. Adding a pointer 4240to 4241each namespace node increases the overall size of the internal namespace 4242by 4243about 5%, since each namespace entry usually consists of both a namespace 4244node and an ACPI operand object. However, this is the first growth of the 4245namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 4246 4247Implemented a performance optimization that reduces the number of 4248namespace 4249walks. On control method exit, only walk the namespace if the method is 4250known 4251to have created namespace objects outside of its local scope. Previously, 4252the 4253entire namespace was traversed on each control method exit. This change 4254can 4255improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 4256Moore. 4257 4258Added support to truncate I/O addresses to 16 bits for Windows 4259compatibility. 4260Some ASL code has been seen in the field that inadvertently has bits set 4261above bit 15. This feature is optional and is enabled if the BIOS 4262requests 4263any Windows OSI strings. It can also be enabled by the host OS. Matthew 4264Garrett, Bob Moore. 4265 4266Added support to limit the maximum time for the ASL Sleep() operator. To 4267prevent accidental deep sleeps, limit the maximum time that Sleep() will 4268actually sleep. Configurable, the default maximum is two seconds. ACPICA 4269bugzilla 854. 4270 4271Added run-time validation support for the _WDG and_WED Microsoft 4272predefined 4273methods. These objects are defined by "Windows Instrumentation", and are 4274not 4275part of the ACPI spec. ACPICA BZ 860. 4276 4277Expanded all statistic counters used during namespace and device 4278initialization from 16 to 32 bits in order to support very large 4279namespaces. 4280 4281Replaced all instances of %d in printf format specifiers with %u since 4282nearly 4283all integers in ACPICA are unsigned. 4284 4285Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 4286returned 4287as AE_NO_HANDLER. 4288 4289Example Code and Data Size: These are the sizes for the OS-independent 4290acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4291debug version of the code includes the debug output trace mechanism and 4292has a 4293much larger code and data size. 4294 4295 Previous Release: 4296 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4297 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4298 Current Release: 4299 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4300 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4301 43022) iASL Compiler/Disassembler and Tools: 4303 4304iASL: Added compiler support for the _WDG and_WED Microsoft predefined 4305methods. These objects are defined by "Windows Instrumentation", and are 4306not 4307part of the ACPI spec. ACPICA BZ 860. 4308 4309AcpiExec: added option to disable the memory tracking mechanism. The -dt 4310option will disable the tracking mechanism, which improves performance 4311considerably. 4312 4313AcpiExec: Restructured the command line options into -d (disable) and -e 4314(enable) options. 4315 4316---------------------------------------- 431728 April 2010. Summary of changes for version 20100428: 4318 43191) ACPI CA Core Subsystem: 4320 4321Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 4322including FADT-based and GPE Block Devices, execute any _PRW methods in 4323the 4324new table, and process any _Lxx/_Exx GPE methods in the new table. Any 4325runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 4326immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 4327Devices. Provides compatibility with other ACPI implementations. Two new 4328files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 4329Moore. 4330 4331Fixed a regression introduced in version 20100331 within the table 4332manager 4333where initial table loading could fail. This was introduced in the fix 4334for 4335AcpiReallocateRootTable. Also, renamed some of fields in the table 4336manager 4337data structures to clarify their meaning and use. 4338 4339Fixed a possible allocation overrun during internal object copy in 4340AcpiUtCopySimpleObject. The original code did not correctly handle the 4341case 4342where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 4343847. 4344 4345Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 4346possible access beyond end-of-allocation. Also, now fully validate 4347descriptor 4348(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 4349 4350Example Code and Data Size: These are the sizes for the OS-independent 4351acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4352debug version of the code includes the debug output trace mechanism and 4353has a 4354much larger code and data size. 4355 4356 Previous Release: 4357 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4358 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4359 Current Release: 4360 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4361 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4362 43632) iASL Compiler/Disassembler and Tools: 4364 4365iASL: Implemented Min/Max/Len/Gran validation for address resource 4366descriptors. This change implements validation for the address fields 4367that 4368are common to all address-type resource descriptors. These checks are 4369implemented: Checks for valid Min/Max, length within the Min/Max window, 4370valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 4371per 4372table 6-40 in the ACPI 4.0a specification. Also split the large 4373aslrestype1.c 4374and aslrestype2.c files into five new files. ACPICA BZ 840. 4375 4376iASL: Added support for the _Wxx predefined names. This support was 4377missing 4378and these names were not recognized by the compiler as valid predefined 4379names. ACPICA BZ 851. 4380 4381iASL: Added an error for all predefined names that are defined to return 4382no 4383value and thus must be implemented as Control Methods. These include all 4384of 4385the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 4386names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 4387 4388iASL: Implemented the -ts option to emit hex AML data in ASL format, as 4389an 4390ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 4391be 4392dynamically loaded via the Load() operator. Also cleaned up output for 4393the 4394- 4395ta and -tc options. ACPICA BZ 853. 4396 4397Tests: Added a new file with examples of extended iASL error checking. 4398Demonstrates the advanced error checking ability of the iASL compiler. 4399Available at tests/misc/badcode.asl. 4400 4401---------------------------------------- 440231 March 2010. Summary of changes for version 20100331: 4403 44041) ACPI CA Core Subsystem: 4405 4406Completed a major update for the GPE support in order to improve support 4407for 4408shared GPEs and to simplify both host OS and ACPICA code. Added a 4409reference 4410count mechanism to support shared GPEs that require multiple device 4411drivers. 4412Several external interfaces have changed. One external interface has been 4413removed. One new external interface was added. Most of the GPE external 4414interfaces now use the GPE spinlock instead of the events mutex (and the 4415Flags parameter for many GPE interfaces has been removed.) See the 4416updated 4417ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 4418Rafael 4419Wysocki. ACPICA BZ 831. 4420 4421Changed: 4422 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 4423Removed: 4424 AcpiSetGpeType 4425New: 4426 AcpiSetGpe 4427 4428Implemented write support for DataTable operation regions. These regions 4429are 4430defined via the DataTableRegion() operator. Previously, only read support 4431was 4432implemented. The ACPI specification allows DataTableRegions to be 4433read/write, 4434however. 4435 4436Implemented a new subsystem option to force a copy of the DSDT to local 4437memory. Optionally copy the entire DSDT to local memory (instead of 4438simply 4439mapping it.) There are some (albeit very rare) BIOSs that corrupt or 4440replace 4441the original DSDT, creating the need for this option. Default is FALSE, 4442do 4443not copy the DSDT. 4444 4445Implemented detection of a corrupted or replaced DSDT. This change adds 4446support to detect a DSDT that has been corrupted and/or replaced from 4447outside 4448the OS (by firmware). This is typically catastrophic for the system, but 4449has 4450been seen on some machines. Once this problem has been detected, the DSDT 4451copy option can be enabled via system configuration. Lin Ming, Bob Moore. 4452 4453Fixed two problems with AcpiReallocateRootTable during the root table 4454copy. 4455When copying the root table to the new allocation, the length used was 4456incorrect. The new size was used instead of the current table size, 4457meaning 4458too much data was copied. Also, the count of available slots for ACPI 4459tables 4460was not set correctly. Alexey Starikovskiy, Bob Moore. 4461 4462Example Code and Data Size: These are the sizes for the OS-independent 4463acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4464debug version of the code includes the debug output trace mechanism and 4465has a 4466much larger code and data size. 4467 4468 Previous Release: 4469 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4470 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4471 Current Release: 4472 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4473 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4474 44752) iASL Compiler/Disassembler and Tools: 4476 4477iASL: Implement limited typechecking for values returned from predefined 4478control methods. The type of any returned static (unnamed) object is now 4479validated. For example, Return(1). ACPICA BZ 786. 4480 4481iASL: Fixed a predefined name object verification regression. Fixes a 4482problem 4483introduced in version 20100304. An error is incorrectly generated if a 4484predefined name is declared as a static named object with a value defined 4485using the keywords "Zero", "One", or "Ones". Lin Ming. 4486 4487iASL: Added Windows 7 support for the -g option (get local ACPI tables) 4488by 4489reducing the requested registry access rights. ACPICA BZ 842. 4490 4491Disassembler: fixed a possible fault when generating External() 4492statements. 4493Introduced in commit ae7d6fd: Properly handle externals with parent- 4494prefix 4495(carat). Fixes a string length allocation calculation. Lin Ming. 4496 4497---------------------------------------- 449804 March 2010. Summary of changes for version 20100304: 4499 45001) ACPI CA Core Subsystem: 4501 4502Fixed a possible problem with the AML Mutex handling function 4503AcpiExReleaseMutex where the function could fault under the very rare 4504condition when the interpreter has blocked, the interpreter lock is 4505released, 4506the interpreter is then reentered via the same thread, and attempts to 4507acquire an AML mutex that was previously acquired. FreeBSD report 140979. 4508Lin 4509Ming. 4510 4511Implemented additional configuration support for the AML "Debug Object". 4512Output from the debug object can now be enabled via a global variable, 4513AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 4514debugging. 4515This debug output is now available in the release version of ACPICA 4516instead 4517of just the debug version. Also, the entire debug output module can now 4518be 4519configured out of the ACPICA build if desired. One new file added, 4520executer/exdebug.c. Lin Ming, Bob Moore. 4521 4522Added header support for the ACPI MCHI table (Management Controller Host 4523Interface Table). This table was added in ACPI 4.0, but the defining 4524document 4525has only recently become available. 4526 4527Standardized output of integer values for ACPICA warnings/errors. Always 4528use 45290x prefix for hex output, always use %u for unsigned integer decimal 4530output. 4531Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 4532400 4533invocations.) These invocations were converted from the original 4534ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 4535 4536Example Code and Data Size: These are the sizes for the OS-independent 4537acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4538debug version of the code includes the debug output trace mechanism and 4539has a 4540much larger code and data size. 4541 4542 Previous Release: 4543 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4544 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4545 Current Release: 4546 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4547 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4548 45492) iASL Compiler/Disassembler and Tools: 4550 4551iASL: Implemented typechecking support for static (non-control method) 4552predefined named objects that are declared with the Name() operator. For 4553example, the type of this object is now validated to be of type Integer: 4554Name(_BBN, 1). This change migrates the compiler to using the core 4555predefined 4556name table instead of maintaining a local version. Added a new file, 4557aslpredef.c. ACPICA BZ 832. 4558 4559Disassembler: Added support for the ACPI 4.0 MCHI table. 4560 4561---------------------------------------- 456221 January 2010. Summary of changes for version 20100121: 4563 45641) ACPI CA Core Subsystem: 4565 4566Added the 2010 copyright to all module headers and signons. This affects 4567virtually every file in the ACPICA core subsystem, the iASL compiler, the 4568tools/utilities, and the test suites. 4569 4570Implemented a change to the AcpiGetDevices interface to eliminate 4571unnecessary 4572invocations of the _STA method. In the case where a specific _HID is 4573requested, do not run _STA until a _HID match is found. This eliminates 4574potentially dozens of _STA calls during a search for a particular 4575device/HID, 4576which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 4577 4578Implemented an additional repair for predefined method return values. 4579Attempt 4580to repair unexpected NULL elements within returned Package objects. 4581Create 4582an 4583Integer of value zero, a NULL String, or a zero-length Buffer as 4584appropriate. 4585ACPICA BZ 818. Lin Ming, Bob Moore. 4586 4587Removed the obsolete ACPI_INTEGER data type. This type was introduced as 4588the 4589code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 4590(with 459164-bit AML integers). It is now obsolete and this change removes it from 4592the 4593ACPICA code base, replaced by UINT64. The original typedef has been 4594retained 4595for now for compatibility with existing device driver code. ACPICA BZ 4596824. 4597 4598Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 4599in 4600the parse tree object. 4601 4602Added additional warning options for the gcc-4 generation. Updated the 4603source 4604accordingly. This includes some code restructuring to eliminate 4605unreachable 4606code, elimination of some gotos, elimination of unused return values, 4607some 4608additional casting, and removal of redundant declarations. 4609 4610Example Code and Data Size: These are the sizes for the OS-independent 4611acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4612debug version of the code includes the debug output trace mechanism and 4613has a 4614much larger code and data size. 4615 4616 Previous Release: 4617 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 4618 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 4619 Current Release: 4620 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4621 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4622 46232) iASL Compiler/Disassembler and Tools: 4624 4625No functional changes for this release. 4626 4627---------------------------------------- 462814 December 2009. Summary of changes for version 20091214: 4629 46301) ACPI CA Core Subsystem: 4631 4632Enhanced automatic data type conversions for predefined name repairs. 4633This 4634change expands the automatic repairs/conversions for predefined name 4635return 4636values to make Integers, Strings, and Buffers fully interchangeable. 4637Also, 4638a 4639Buffer can be converted to a Package of Integers if necessary. The 4640nsrepair.c 4641module was completely restructured. Lin Ming, Bob Moore. 4642 4643Implemented automatic removal of null package elements during predefined 4644name 4645repairs. This change will automatically remove embedded and trailing NULL 4646package elements from returned package objects that are defined to 4647contain 4648a 4649variable number of sub-packages. The driver is then presented with a 4650package 4651with no null elements to deal with. ACPICA BZ 819. 4652 4653Implemented a repair for the predefined _FDE and _GTM names. The expected 4654return value for both names is a Buffer of 5 DWORDs. This repair fixes 4655two 4656possible problems (both seen in the field), where a package of integers 4657is 4658returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 4659Kim. 4660 4661Implemented additional module-level code support. This change will 4662properly 4663execute module-level code that is not at the root of the namespace (under 4664a 4665Device object, etc.). Now executes the code within the current scope 4666instead 4667of the root. ACPICA BZ 762. Lin Ming. 4668 4669Fixed possible mutex acquisition errors when running _REG methods. Fixes 4670a 4671problem where mutex errors can occur when running a _REG method that is 4672in 4673the same scope as a method-defined operation region or an operation 4674region 4675under a module-level IF block. This type of code is rare, so the problem 4676has 4677not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 4678 4679Fixed a possible memory leak during module-level code execution. An 4680object 4681could be leaked for each block of executed module-level code if the 4682interpreter slack mode is enabled This change deletes any implicitly 4683returned 4684object from the module-level code block. Lin Ming. 4685 4686Removed messages for successful predefined repair(s). The repair 4687mechanism 4688was considered too wordy. Now, messages are only unconditionally emitted 4689if 4690the return object cannot be repaired. Existing messages for successful 4691repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 4692827. 4693 4694Example Code and Data Size: These are the sizes for the OS-independent 4695acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4696debug version of the code includes the debug output trace mechanism and 4697has a 4698much larger code and data size. 4699 4700 Previous Release: 4701 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 4702 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 4703 Current Release: 4704 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 4705 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 4706 47072) iASL Compiler/Disassembler and Tools: 4708 4709iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 4710files 4711were no longer automatically removed at the termination of the compile. 4712 4713acpiexec: Implemented the -f option to specify default region fill value. 4714This option specifies the value used to initialize buffers that simulate 4715operation regions. Default value is zero. Useful for debugging problems 4716that 4717depend on a specific initial value for a region or field. 4718 4719---------------------------------------- 472012 November 2009. Summary of changes for version 20091112: 4721 47221) ACPI CA Core Subsystem: 4723 4724Implemented a post-order callback to AcpiWalkNamespace. The existing 4725interface only has a pre-order callback. This change adds an additional 4726parameter for a post-order callback which will be more useful for bus 4727scans. 4728ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 4729 4730Modified the behavior of the operation region memory mapping cache for 4731SystemMemory. Ensure that the memory mappings created for operation 4732regions 4733do not cross 4K page boundaries. Crossing a page boundary while mapping 4734regions can cause kernel warnings on some hosts if the pages have 4735different 4736attributes. Such regions are probably BIOS bugs, and this is the 4737workaround. 4738Linux BZ 14445. Lin Ming. 4739 4740Implemented an automatic repair for predefined methods that must return 4741sorted lists. This change will repair (by sorting) packages returned by 4742_ALR, 4743_PSS, and _TSS. Drivers can now assume that the packages are correctly 4744sorted 4745and do not contain NULL package elements. Adds one new file, 4746namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 4747 4748Fixed a possible fault during predefined name validation if a return 4749Package 4750object contains NULL elements. Also adds a warning if a NULL element is 4751followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 4752may 4753include repair or removal of all such NULL elements where possible. 4754 4755Implemented additional module-level executable AML code support. This 4756change 4757will execute module-level code that is not at the root of the namespace 4758(under a Device object, etc.) at table load time. Module-level executable 4759AML 4760code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 4761 4762Implemented a new internal function to create Integer objects. This 4763function 4764simplifies miscellaneous object creation code. ACPICA BZ 823. 4765 4766Reduced the severity of predefined repair messages, Warning to Info. 4767Since 4768the object was successfully repaired, a warning is too severe. Reduced to 4769an 4770info message for now. These messages may eventually be changed to debug- 4771only. 4772ACPICA BZ 812. 4773 4774Example Code and Data Size: These are the sizes for the OS-independent 4775acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4776debug version of the code includes the debug output trace mechanism and 4777has a 4778much larger code and data size. 4779 4780 Previous Release: 4781 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 4782 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 4783 Current Release: 4784 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 4785 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 4786 47872) iASL Compiler/Disassembler and Tools: 4788 4789iASL: Implemented Switch() with While(1) so that Break works correctly. 4790This 4791change correctly implements the Switch operator with a surrounding 4792While(1) 4793so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 4794 4795iASL: Added a message if a package initializer list is shorter than 4796package 4797length. Adds a new remark for a Package() declaration if an initializer 4798list 4799exists, but is shorter than the declared length of the package. Although 4800technically legal, this is probably a coding error and it is seen in the 4801field. ACPICA BZ 815. Lin Ming, Bob Moore. 4802 4803iASL: Fixed a problem where the compiler could fault after the maximum 4804number 4805of errors was reached (200). 4806 4807acpixtract: Fixed a possible warning for pointer cast if the compiler 4808warning 4809level set very high. 4810 4811---------------------------------------- 481213 October 2009. Summary of changes for version 20091013: 4813 48141) ACPI CA Core Subsystem: 4815 4816Fixed a problem where an Operation Region _REG method could be executed 4817more 4818than once. If a custom address space handler is installed by the host 4819before 4820the "initialize operation regions" phase of the ACPICA initialization, 4821any 4822_REG methods for that address space could be executed twice. This change 4823fixes the problem. ACPICA BZ 427. Lin Ming. 4824 4825Fixed a possible memory leak for the Scope() ASL operator. When the exact 4826invocation of "Scope(\)" is executed (change scope to root), one internal 4827operand object was leaked. Lin Ming. 4828 4829Implemented a run-time repair for the _MAT predefined method. If the _MAT 4830return value is defined as a Field object in the AML, and the field 4831size is less than or equal to the default width of an integer (32 or 483264),_MAT 4833can incorrectly return an Integer instead of a Buffer. ACPICA now 4834automatically repairs this problem. ACPICA BZ 810. 4835 4836Implemented a run-time repair for the _BIF and _BIX predefined methods. 4837The 4838"OEM Information" field is often incorrectly returned as an Integer with 4839value zero if the field is not supported by the platform. This is due to 4840an 4841ambiguity in the ACPI specification. The field should always be a string. 4842ACPICA now automatically repairs this problem by returning a NULL string 4843within the returned Package. ACPICA BZ 807. 4844 4845Example Code and Data Size: These are the sizes for the OS-independent 4846acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4847debug version of the code includes the debug output trace mechanism and 4848has a 4849much larger code and data size. 4850 4851 Previous Release: 4852 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 4853 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 4854 Current Release: 4855 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 4856 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 4857 48582) iASL Compiler/Disassembler and Tools: 4859 4860Disassembler: Fixed a problem where references to external symbols that 4861contained one or more parent-prefixes (carats) were not handled 4862correctly, 4863possibly causing a fault. ACPICA BZ 806. Lin Ming. 4864 4865Disassembler: Restructured the code so that all functions that handle 4866external symbols are in a single module. One new file is added, 4867common/dmextern.c. 4868 4869AML Debugger: Added a max count argument for the Batch command (which 4870executes multiple predefined methods within the namespace.) 4871 4872iASL: Updated the compiler documentation (User Reference.) Available at 4873http://www.acpica.org/documentation/. ACPICA BZ 750. 4874 4875AcpiXtract: Updated for Lint and other formatting changes. Close all open 4876files. 4877 4878---------------------------------------- 487903 September 2009. Summary of changes for version 20090903: 4880 48811) ACPI CA Core Subsystem: 4882 4883For Windows Vista compatibility, added the automatic execution of an _INI 4884method located at the namespace root (\_INI). This method is executed at 4885table load time. This support is in addition to the automatic execution 4886of 4887\_SB._INI. Lin Ming. 4888 4889Fixed a possible memory leak in the interpreter for AML package objects 4890if 4891the package initializer list is longer than the defined size of the 4892package. 4893This apparently can only happen if the BIOS changes the package size on 4894the 4895fly (seen in a _PSS object), as ASL compilers do not allow this. The 4896interpreter will truncate the package to the defined size (and issue an 4897error 4898message), but previously could leave the extra objects undeleted if they 4899were 4900pre-created during the argument processing (such is the case if the 4901package 4902consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 4903 4904Fixed a problem seen when a Buffer or String is stored to itself via ASL. 4905This has been reported in the field. Previously, ACPICA would zero out 4906the 4907buffer/string. Now, the operation is treated as a noop. Provides Windows 4908compatibility. ACPICA BZ 803. Lin Ming. 4909 4910Removed an extraneous error message for ASL constructs of the form 4911Store(LocalX,LocalX) when LocalX is uninitialized. These curious 4912statements 4913are seen in many BIOSs and are once again treated as NOOPs and no error 4914is 4915emitted when they are encountered. ACPICA BZ 785. 4916 4917Fixed an extraneous warning message if a _DSM reserved method returns a 4918Package object. _DSM can return any type of object, so validation on the 4919return type cannot be performed. ACPICA BZ 802. 4920 4921Example Code and Data Size: These are the sizes for the OS-independent 4922acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4923debug version of the code includes the debug output trace mechanism and 4924has a 4925much larger code and data size. 4926 4927 Previous Release: 4928 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 4929 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 4930 Current Release: 4931 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 4932 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 4933 49342) iASL Compiler/Disassembler and Tools: 4935 4936iASL: Fixed a problem with the use of the Alias operator and Resource 4937Templates. The correct alias is now constructed and no error is emitted. 4938ACPICA BZ 738. 4939 4940iASL: Implemented the -I option to specify additional search directories 4941for 4942include files. Allows multiple additional search paths for include files. 4943Directories are searched in the order specified on the command line 4944(after 4945the local directory is searched.) ACPICA BZ 800. 4946 4947iASL: Fixed a problem where the full pathname for include files was not 4948emitted for warnings/errors. This caused the IDE support to not work 4949properly. ACPICA BZ 765. 4950 4951iASL: Implemented the -@ option to specify a Windows-style response file 4952containing additional command line options. ACPICA BZ 801. 4953 4954AcpiExec: Added support to load multiple AML files simultaneously (such 4955as 4956a 4957DSDT and multiple SSDTs). Also added support for wildcards within the AML 4958pathname. These features allow all machine tables to be easily loaded and 4959debugged together. ACPICA BZ 804. 4960 4961Disassembler: Added missing support for disassembly of HEST table Error 4962Bank 4963subtables. 4964 4965---------------------------------------- 496630 July 2009. Summary of changes for version 20090730: 4967 4968The ACPI 4.0 implementation for ACPICA is complete with this release. 4969 49701) ACPI CA Core Subsystem: 4971 4972ACPI 4.0: Added header file support for all new and changed ACPI tables. 4973Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 4974new 4975for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 4976BERT, 4977EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 4978There 4979have been some ACPI 4.0 changes to other existing tables. Split the large 4980actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 4981 4982ACPI 4.0: Implemented predefined name validation for all new names. There 4983are 498431 new names in ACPI 4.0. The predefined validation module was split into 4985two 4986files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 4987 4988Implemented support for so-called "module-level executable code". This is 4989executable AML code that exists outside of any control method and is 4990intended 4991to be executed at table load time. Although illegal since ACPI 2.0, this 4992type 4993of code still exists and is apparently still being created. Blocks of 4994this 4995code are now detected and executed as intended. Currently, the code 4996blocks 4997must exist under either an If, Else, or While construct; these are the 4998typical cases seen in the field. ACPICA BZ 762. Lin Ming. 4999 5000Implemented an automatic dynamic repair for predefined names that return 5001nested Package objects. This applies to predefined names that are defined 5002to 5003return a variable-length Package of sub-packages. If the number of sub- 5004packages is one, BIOS code is occasionally seen that creates a simple 5005single 5006package with no sub-packages. This code attempts to fix the problem by 5007wrapping a new package object around the existing package. These methods 5008can 5009be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 5010BZ 5011790. 5012 5013Fixed a regression introduced in 20090625 for the AcpiGetDevices 5014interface. 5015The _HID/_CID matching was broken and no longer matched IDs correctly. 5016ACPICA 5017BZ 793. 5018 5019Fixed a problem with AcpiReset where the reset would silently fail if the 5020register was one of the protected I/O ports. AcpiReset now bypasses the 5021port 5022validation mechanism. This may eventually be driven into the 5023AcpiRead/Write 5024interfaces. 5025 5026Fixed a regression related to the recent update of the AcpiRead/Write 5027interfaces. A sleep/suspend could fail if the optional PM2 Control 5028register 5029does not exist during an attempt to write the Bus Master Arbitration bit. 5030(However, some hosts already delete the code that writes this bit, and 5031the 5032code may in fact be obsolete at this date.) ACPICA BZ 799. 5033 5034Fixed a problem where AcpiTerminate could fault if inadvertently called 5035twice 5036in succession. ACPICA BZ 795. 5037 5038Example Code and Data Size: These are the sizes for the OS-independent 5039acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5040debug version of the code includes the debug output trace mechanism and 5041has a 5042much larger code and data size. 5043 5044 Previous Release: 5045 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5046 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5047 Current Release: 5048 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5049 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5050 50512) iASL Compiler/Disassembler and Tools: 5052 5053ACPI 4.0: Implemented disassembler support for all new ACPI tables and 5054changes to existing tables. ACPICA BZ 775. 5055 5056---------------------------------------- 505725 June 2009. Summary of changes for version 20090625: 5058 5059The ACPI 4.0 Specification was released on June 16 and is available at 5060www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 5061continue for the next few releases. 5062 50631) ACPI CA Core Subsystem: 5064 5065ACPI 4.0: Implemented interpreter support for the IPMI operation region 5066address space. Includes support for bi-directional data buffers and an 5067IPMI 5068address space handler (to be installed by an IPMI device driver.) ACPICA 5069BZ 5070773. Lin Ming. 5071 5072ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 5073Includes 5074support in both the header files and the disassembler. 5075 5076Completed a major update for the AcpiGetObjectInfo external interface. 5077Changes include: 5078 - Support for variable, unlimited length HID, UID, and CID strings. 5079 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 5080etc.) 5081 - Call the _SxW power methods on behalf of a device object. 5082 - Determine if a device is a PCI root bridge. 5083 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 5084These changes will require an update to all callers of this interface. 5085See 5086the updated ACPICA Programmer Reference for details. One new source file 5087has 5088been added - utilities/utids.c. ACPICA BZ 368, 780. 5089 5090Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 5091transfers. The Value parameter has been extended from 32 bits to 64 bits 5092in 5093order to support new ACPI 4.0 tables. These changes will require an 5094update 5095to 5096all callers of these interfaces. See the ACPICA Programmer Reference for 5097details. ACPICA BZ 768. 5098 5099Fixed several problems with AcpiAttachData. The handler was not invoked 5100when 5101the host node was deleted. The data sub-object was not automatically 5102deleted 5103when the host node was deleted. The interface to the handler had an 5104unused 5105parameter, this was removed. ACPICA BZ 778. 5106 5107Enhanced the function that dumps ACPI table headers. All non-printable 5108characters in the string fields are now replaced with '?' (Signature, 5109OemId, 5110OemTableId, and CompilerId.) ACPI tables with non-printable characters in 5111these fields are occasionally seen in the field. ACPICA BZ 788. 5112 5113Fixed a problem with predefined method repair code where the code that 5114attempts to repair/convert an object of incorrect type is only executed 5115on 5116the first time the predefined method is called. The mechanism that 5117disables 5118warnings on subsequent calls was interfering with the repair mechanism. 5119ACPICA BZ 781. 5120 5121Fixed a possible memory leak in the predefined validation/repair code 5122when 5123a 5124buffer is automatically converted to an expected string object. 5125 5126Removed obsolete 16-bit files from the distribution and from the current 5127git 5128tree head. ACPICA BZ 776. 5129 5130Example Code and Data Size: These are the sizes for the OS-independent 5131acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5132debug version of the code includes the debug output trace mechanism and 5133has a 5134much larger code and data size. 5135 5136 Previous Release: 5137 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5138 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5139 Current Release: 5140 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5141 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5142 51432) iASL Compiler/Disassembler and Tools: 5144 5145ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 5146operation region keyword. ACPICA BZ 771, 772. Lin Ming. 5147 5148ACPI 4.0: iASL - implemented compile-time validation support for all new 5149predefined names and control methods (31 total). ACPICA BZ 769. 5150 5151---------------------------------------- 515221 May 2009. Summary of changes for version 20090521: 5153 51541) ACPI CA Core Subsystem: 5155 5156Disabled the preservation of the SCI enable bit in the PM1 control 5157register. 5158The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 5159to 5160be 5161a "preserved" bit - "OSPM always preserves this bit position", section 51624.7.3.2.1. However, some machines fail if this bit is in fact preserved 5163because the bit needs to be explicitly set by the OS as a workaround. No 5164machines fail if the bit is not preserved. Therefore, ACPICA no longer 5165attempts to preserve this bit. 5166 5167Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 5168incorrectly formed _PRT package could cause a fault. Added validation to 5169ensure that each package element is actually a sub-package. 5170 5171Implemented a new interface to install or override a single control 5172method, 5173AcpiInstallMethod. This interface is useful when debugging in order to 5174repair 5175an existing method or to install a missing method without having to 5176override 5177the entire ACPI table. See the ACPICA Programmer Reference for use and 5178examples. Lin Ming, Bob Moore. 5179 5180Fixed several reference count issues with the DdbHandle object that is 5181created from a Load or LoadTable operator. Prevent premature deletion of 5182the 5183object. Also, mark the object as invalid once the table has been 5184unloaded. 5185This is needed because the handle itself may not be deleted after the 5186table 5187unload, depending on whether it has been stored in a named object by the 5188caller. Lin Ming. 5189 5190Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 5191mutexes of the same sync level are acquired but then not released in 5192strict 5193opposite order, the internally maintained Current Sync Level becomes 5194confused 5195and can cause subsequent execution errors. ACPICA BZ 471. 5196 5197Changed the allowable release order for ASL mutex objects. The ACPI 4.0 5198specification has been changed to make the SyncLevel for mutex objects 5199more 5200useful. When releasing a mutex, the SyncLevel of the mutex must now be 5201the 5202same as the current sync level. This makes more sense than the previous 5203rule 5204(SyncLevel less than or equal). This change updates the code to match the 5205specification. 5206 5207Fixed a problem with the local version of the AcpiOsPurgeCache function. 5208The 5209(local) cache must be locked during all cache object deletions. Andrew 5210Baumann. 5211 5212Updated the Load operator to use operation region interfaces. This 5213replaces 5214direct memory mapping with region access calls. Now, all region accesses 5215go 5216through the installed region handler as they should. 5217 5218Simplified and optimized the NsGetNextNode function. Reduced parameter 5219count 5220and reduced code for this frequently used function. 5221 5222Example Code and Data Size: These are the sizes for the OS-independent 5223acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5224debug version of the code includes the debug output trace mechanism and 5225has a 5226much larger code and data size. 5227 5228 Previous Release: 5229 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5230 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5231 Current Release: 5232 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5233 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5234 52352) iASL Compiler/Disassembler and Tools: 5236 5237Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 5238problems 5239with sub-table disassembly and handling invalid sub-tables. Attempt 5240recovery 5241after an invalid sub-table ID. 5242 5243---------------------------------------- 524422 April 2009. Summary of changes for version 20090422: 5245 52461) ACPI CA Core Subsystem: 5247 5248Fixed a compatibility issue with the recently released I/O port 5249protection 5250mechanism. For windows compatibility, 1) On a port protection violation, 5251simply ignore the request and do not return an exception (allow the 5252control 5253method to continue execution.) 2) If only part of the request overlaps a 5254protected port, read/write the individual ports that are not protected. 5255Linux 5256BZ 13036. Lin Ming 5257 5258Enhanced the execution of the ASL/AML BreakPoint operator so that it 5259actually 5260breaks into the AML debugger if the debugger is present. This matches the 5261ACPI-defined behavior. 5262 5263Fixed several possible warnings related to the use of the configurable 5264ACPI_THREAD_ID. This type can now be configured as either an integer or a 5265pointer with no warnings. Also fixes several warnings in printf-like 5266statements for the 64-bit build when the type is configured as a pointer. 5267ACPICA BZ 766, 767. 5268 5269Fixed a number of possible warnings when compiling with gcc 4+ (depending 5270on 5271warning options.) Examples include printf formats, aliasing, unused 5272globals, 5273missing prototypes, missing switch default statements, use of non-ANSI 5274library functions, use of non-ANSI constructs. See generate/unix/Makefile 5275for 5276a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 5277 5278Example Code and Data Size: These are the sizes for the OS-independent 5279acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5280debug version of the code includes the debug output trace mechanism and 5281has a 5282much larger code and data size. 5283 5284 Previous Release: 5285 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5286 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5287 Current Release: 5288 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5289 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5290 52912) iASL Compiler/Disassembler and Tools: 5292 5293iASL: Fixed a generation warning from Bison 2.3 and fixed several 5294warnings 5295on 5296the 64-bit build. 5297 5298iASL: Fixed a problem where the Unix/Linux versions of the compiler could 5299not 5300correctly digest Windows/DOS formatted files (with CR/LF). 5301 5302iASL: Added a new option for "quiet mode" (-va) that produces only the 5303compilation summary, not individual errors and warnings. Useful for large 5304batch compilations. 5305 5306AcpiExec: Implemented a new option (-z) to enable a forced 5307semaphore/mutex 5308timeout that can be used to detect hang conditions during execution of 5309AML 5310code (includes both internal semaphores and AML-defined mutexes and 5311events.) 5312 5313Added new makefiles for the generation of acpica in a generic unix-like 5314environment. These makefiles are intended to generate the acpica tools 5315and 5316utilities from the original acpica git source tree structure. 5317 5318Test Suites: Updated and cleaned up the documentation files. Updated the 5319copyrights to 2009, affecting all source files. Use the new version of 5320iASL 5321with quiet mode. Increased the number of available semaphores in the 5322Windows 5323OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 5324added 5325an alternate implementation of the semaphore timeout to allow aslts to 5326execute fully on Cygwin. 5327 5328---------------------------------------- 532920 March 2009. Summary of changes for version 20090320: 5330 53311) ACPI CA Core Subsystem: 5332 5333Fixed a possible race condition between AcpiWalkNamespace and dynamic 5334table 5335unloads. Added a reader/writer locking mechanism to allow multiple 5336concurrent 5337namespace walks (readers), but block a dynamic table unload until it can 5338gain 5339exclusive write access to the namespace. This fixes a problem where a 5340table 5341unload could (possibly catastrophically) delete the portion of the 5342namespace 5343that is currently being examined by a walk. Adds a new file, utlock.c, 5344that 5345implements the reader/writer lock mechanism. ACPICA BZ 749. 5346 5347Fixed a regression introduced in version 20090220 where a change to the 5348FADT 5349handling could cause the ACPICA subsystem to access non-existent I/O 5350ports. 5351 5352Modified the handling of FADT register and table (FACS/DSDT) addresses. 5353The 5354FADT can contain both 32-bit and 64-bit versions of these addresses. 5355Previously, the 64-bit versions were favored, meaning that if both 32 and 535664 5357versions were valid, but not equal, the 64-bit version was used. This was 5358found to cause some machines to fail. Now, in this case, the 32-bit 5359version 5360is used instead. This now matches the Windows behavior. 5361 5362Implemented a new mechanism to protect certain I/O ports. Provides 5363Microsoft 5364compatibility and protects the standard PC I/O ports from access via AML 5365code. Adds a new file, hwvalid.c 5366 5367Fixed a possible extraneous warning message from the FADT support. The 5368message warns of a 32/64 length mismatch between the legacy and GAS 5369definitions for a register. 5370 5371Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 5372is 5373made obsolete by the port protection mechanism above. It was previously 5374used 5375to validate the entire address range of an operation region, which could 5376be 5377incorrect if the range included illegal ports, but fields within the 5378operation region did not actually access those ports. Validation is now 5379performed on a per-field basis instead of the entire region. 5380 5381Modified the handling of the PM1 Status Register ignored bit (bit 11.) 5382Ignored bits must be "preserved" according to the ACPI spec. Usually, 5383this 5384means a read/modify/write when writing to the register. However, for 5385status 5386registers, writing a one means clear the event. Writing a zero means 5387preserve 5388the event (do not clear.) This behavior is clarified in the ACPI 4.0 5389spec, 5390and the ACPICA code now simply always writes a zero to the ignored bit. 5391 5392Modified the handling of ignored bits for the PM1 A/B Control Registers. 5393As 5394per the ACPI specification, for the control registers, preserve 5395(read/modify/write) all bits that are defined as either reserved or 5396ignored. 5397 5398Updated the handling of write-only bits in the PM1 A/B Control Registers. 5399When reading the register, zero the write-only bits as per the ACPI spec. 5400ACPICA BZ 443. Lin Ming. 5401 5402Removed "Linux" from the list of supported _OSI strings. Linux no longer 5403wants to reply true to this request. The Windows strings are the only 5404paths 5405through the AML that are tested and known to work properly. 5406 5407 Previous Release: 5408 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 5409 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 5410 Current Release: 5411 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5412 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5413 54142) iASL Compiler/Disassembler and Tools: 5415 5416Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 5417and 5418aetables.c 5419 5420---------------------------------------- 542120 February 2009. Summary of changes for version 20090220: 5422 54231) ACPI CA Core Subsystem: 5424 5425Optimized the ACPI register locking. Removed locking for reads from the 5426ACPI 5427bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 5428is 5429not required when reading the single-bit registers. The 5430AcpiGetRegisterUnlocked function is no longer needed and has been 5431removed. 5432This will improve performance for reads on these registers. ACPICA BZ 5433760. 5434 5435Fixed the parameter validation for AcpiRead/Write. Now return 5436AE_BAD_PARAMETER if the input register pointer is null, and 5437AE_BAD_ADDRESS 5438if 5439the register has an address of zero. Previously, these cases simply 5440returned 5441AE_OK. For optional registers such as PM1B status/enable/control, the 5442caller 5443should check for a valid register address before calling. ACPICA BZ 748. 5444 5445Renamed the external ACPI bit register access functions. Renamed 5446AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 5447functions. The new names are AcpiReadBitRegister and 5448AcpiWriteBitRegister. 5449Also, restructured the code for these functions by simplifying the code 5450path 5451and condensing duplicate code to reduce code size. 5452 5453Added new functions to transparently handle the possibly split PM1 A/B 5454registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 5455functions 5456now handle the split registers for PM1 Status, Enable, and Control. 5457ACPICA 5458BZ 5459746. 5460 5461Added a function to handle the PM1 control registers, 5462AcpiHwWritePm1Control. 5463This function writes both of the PM1 control registers (A/B). These 5464registers 5465are different than the PM1 A/B status and enable registers in that 5466different 5467values can be written to the A/B registers. Most notably, the SLP_TYP 5468bits 5469can be different, as per the values returned from the _Sx predefined 5470methods. 5471 5472Removed an extra register write within AcpiHwClearAcpiStatus. This 5473function 5474was writing an optional PM1B status register twice. The existing call to 5475the 5476low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 5477A/B 5478register. ACPICA BZ 751. 5479 5480Split out the PM1 Status registers from the FADT. Added new globals for 5481these 5482registers (A/B), similar to the way the PM1 Enable registers are handled. 5483Instead of overloading the FADT Event Register blocks. This makes the 5484code 5485clearer and less prone to error. 5486 5487Fixed the warning message for when the platform contains too many ACPI 5488tables 5489for the default size of the global root table data structure. The 5490calculation 5491for the truncation value was incorrect. 5492 5493Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 5494obsolete macro, since it is now a simple reference to ->common.type. 5495There 5496were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 5497 5498Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 5499TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 5500simply SLEEP_TYPE. ACPICA BZ 754. 5501 5502Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 5503function is only needed on 64-bit host operating systems and is thus not 5504included for 32-bit hosts. 5505 5506Debug output: print the input and result for invocations of the _OSI 5507reserved 5508control method via the ACPI_LV_INFO debug level. Also, reduced some of 5509the 5510verbosity of this debug level. Len Brown. 5511 5512Example Code and Data Size: These are the sizes for the OS-independent 5513acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5514debug version of the code includes the debug output trace mechanism and 5515has a 5516much larger code and data size. 5517 5518 Previous Release: 5519 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 5520 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 5521 Current Release: 5522 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 5523 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 5524 55252) iASL Compiler/Disassembler and Tools: 5526 5527Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 5528various legal performance profiles. 5529 5530---------------------------------------- 553123 January 2009. Summary of changes for version 20090123: 5532 55331) ACPI CA Core Subsystem: 5534 5535Added the 2009 copyright to all module headers and signons. This affects 5536virtually every file in the ACPICA core subsystem, the iASL compiler, and 5537the tools/utilities. 5538 5539Implemented a change to allow the host to override any ACPI table, 5540including 5541dynamically loaded tables. Previously, only the DSDT could be replaced by 5542the 5543host. With this change, the AcpiOsTableOverride interface is called for 5544each 5545table found in the RSDT/XSDT during ACPICA initialization, and also 5546whenever 5547a table is dynamically loaded via the AML Load operator. 5548 5549Updated FADT flag definitions, especially the Boot Architecture flags. 5550 5551Debugger: For the Find command, automatically pad the input ACPI name 5552with 5553underscores if the name is shorter than 4 characters. This enables a 5554match 5555with the actual namespace entry which is itself padded with underscores. 5556 5557Example Code and Data Size: These are the sizes for the OS-independent 5558acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5559debug version of the code includes the debug output trace mechanism and 5560has a 5561much larger code and data size. 5562 5563 Previous Release: 5564 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5565 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5566 Current Release: 5567 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 5568 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 5569 55702) iASL Compiler/Disassembler and Tools: 5571 5572Fix build error under Bison-2.4. 5573 5574Dissasembler: Enhanced FADT support. Added decoding of the Boot 5575Architecture 5576flags. Now decode all flags, regardless of the FADT version. Flag output 5577includes the FADT version which first defined each flag. 5578 5579The iASL -g option now dumps the RSDT to a file (in addition to the FADT 5580and 5581DSDT). Windows only. 5582 5583---------------------------------------- 558404 December 2008. Summary of changes for version 20081204: 5585 55861) ACPI CA Core Subsystem: 5587 5588The ACPICA Programmer Reference has been completely updated and revamped 5589for 5590this release. This includes updates to the external interfaces, OSL 5591interfaces, the overview sections, and the debugger reference. 5592 5593Several new ACPICA interfaces have been implemented and documented in the 5594programmer reference: 5595AcpiReset - Writes the reset value to the FADT-defined reset register. 5596AcpiDisableAllGpes - Disable all available GPEs. 5597AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 5598AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 5599AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 5600AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 5601AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 5602 5603Most of the public ACPI hardware-related interfaces have been moved to a 5604new 5605file, components/hardware/hwxface.c 5606 5607Enhanced the FADT parsing and low-level ACPI register access: The ACPI 5608register lengths within the FADT are now used, and the low level ACPI 5609register access no longer hardcodes the ACPI register lengths. Given that 5610there may be some risk in actually trusting the FADT register lengths, a 5611run- 5612time option was added to fall back to the default hardcoded lengths if 5613the 5614FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 5615option is set to true for now, and a warning is issued if a suspicious 5616FADT 5617register length is overridden with the default value. 5618 5619Fixed a reference count issue in NsRepairObject. This problem was 5620introduced 5621in version 20081031 as part of a fix to repair Buffer objects within 5622Packages. Lin Ming. 5623 5624Added semaphore support to the Linux/Unix application OS-services layer 5625(OSL). ACPICA BZ 448. Lin Ming. 5626 5627Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 5628will 5629be implemented in the OSL, or will binary semaphores be used instead. 5630 5631Example Code and Data Size: These are the sizes for the OS-independent 5632acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5633debug version of the code includes the debug output trace mechanism and 5634has a 5635much larger code and data size. 5636 5637 Previous Release: 5638 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 5639 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 5640 Current Release: 5641 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5642 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5643 56442) iASL Compiler/Disassembler and Tools: 5645 5646iASL: Completed the '-e' option to include additional ACPI tables in 5647order 5648to 5649aid with disassembly and External statement generation. ACPICA BZ 742. 5650Lin 5651Ming. 5652 5653iASL: Removed the "named object in while loop" error. The compiler cannot 5654determine how many times a loop will execute. ACPICA BZ 730. 5655 5656Disassembler: Implemented support for FADT revision 2 (MS extension). 5657ACPICA 5658BZ 743. 5659 5660Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 5661MCFG). 5662 5663---------------------------------------- 566431 October 2008. Summary of changes for version 20081031: 5665 56661) ACPI CA Core Subsystem: 5667 5668Restructured the ACPICA header files into public/private. acpi.h now 5669includes 5670only the "public" acpica headers. All other acpica headers are "private" 5671and 5672should not be included by acpica users. One new file, accommon.h is used 5673to 5674include the commonly used private headers for acpica code generation. 5675Future 5676plans include moving all private headers to a new subdirectory. 5677 5678Implemented an automatic Buffer->String return value conversion for 5679predefined ACPI methods. For these methods (such as _BIF), added 5680automatic 5681conversion for return objects that are required to be a String, but a 5682Buffer 5683was found instead. This can happen when reading string battery data from 5684an 5685operation region, because it used to be difficult to convert the data 5686from 5687buffer to string from within the ASL. Ensures that the host OS is 5688provided 5689with a valid null-terminated string. Linux BZ 11822. 5690 5691Updated the FACS waking vector interfaces. Split 5692AcpiSetFirmwareWakingVector 5693into two: one for the 32-bit vector, another for the 64-bit vector. This 5694is 5695required because the host OS must setup the wake much differently for 5696each 5697vector (real vs. protected mode, etc.) and the interface itself should 5698not 5699be 5700deciding which vector to use. Also, eliminated the 5701GetFirmwareWakingVector 5702interface, as it served no purpose (only the firmware reads the vector, 5703OS 5704only writes the vector.) ACPICA BZ 731. 5705 5706Implemented a mechanism to escape infinite AML While() loops. Added a 5707loop 5708counter to force exit from AML While loops if the count becomes too 5709large. 5710This can occur in poorly written AML when the hardware does not respond 5711within a while loop and the loop does not implement a timeout. The 5712maximum 5713loop count is configurable. A new exception code is returned when a loop 5714is 5715broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 5716 5717Optimized the execution of AML While loops. Previously, a control state 5718object was allocated and freed for each execution of the loop. The 5719optimization is to simply reuse the control state for each iteration. 5720This 5721speeds up the raw loop execution time by about 5%. 5722 5723Enhanced the implicit return mechanism. For Windows compatibility, return 5724an 5725implicit integer of value zero for methods that contain no executable 5726code. 5727Such methods are seen in the field as stubs (presumably), and can cause 5728drivers to fail if they expect a return value. Lin Ming. 5729 5730Allow multiple backslashes as root prefixes in namepaths. In a fully 5731qualified namepath, allow multiple backslash prefixes. This can happen 5732(and 5733is seen in the field) because of the use of a double-backslash in strings 5734(since backslash is the escape character) causing confusion. ACPICA BZ 5735739 5736Lin Ming. 5737 5738Emit a warning if two different FACS or DSDT tables are discovered in the 5739FADT. Checks if there are two valid but different addresses for the FACS 5740and 5741DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 5742 5743Consolidated the method argument count validation code. Merged the code 5744that 5745validates control method argument counts into the predefined validation 5746module. Eliminates possible multiple warnings for incorrect argument 5747counts. 5748 5749Implemented ACPICA example code. Includes code for ACPICA initialization, 5750handler installation, and calling a control method. Available at 5751source/tools/examples. 5752 5753Added a global pointer for FACS table to simplify internal FACS access. 5754Use 5755the global pointer instead of using AcpiGetTableByIndex for each FACS 5756access. 5757This simplifies the code for the Global Lock and the Firmware Waking 5758Vector(s). 5759 5760Example Code and Data Size: These are the sizes for the OS-independent 5761acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5762debug version of the code includes the debug output trace mechanism and 5763has a 5764much larger code and data size. 5765 5766 Previous Release: 5767 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 5768 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 5769 Current Release: 5770 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 5771 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 5772 57732) iASL Compiler/Disassembler and Tools: 5774 5775iASL: Improved disassembly of external method calls. Added the -e option 5776to 5777allow the inclusion of additional ACPI tables to help with the 5778disassembly 5779of 5780method invocations and the generation of external declarations during the 5781disassembly. Certain external method invocations cannot be disassembled 5782properly without the actual declaration of the method. Use the -e option 5783to 5784include the table where the external method(s) are actually declared. 5785Most 5786useful for disassembling SSDTs that make method calls back to the master 5787DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 5788-d 5789-e dsdt.aml ssdt1.aml 5790 5791iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 5792problem where the use of an alias within a namepath would result in a not 5793found error or cause the compiler to fault. Also now allows forward 5794references from the Alias operator itself. ACPICA BZ 738. 5795 5796---------------------------------------- 579726 September 2008. Summary of changes for version 20080926: 5798 57991) ACPI CA Core Subsystem: 5800 5801Designed and implemented a mechanism to validate predefined ACPI methods 5802and 5803objects. This code validates the predefined ACPI objects (objects whose 5804names 5805start with underscore) that appear in the namespace, at the time they are 5806evaluated. The argument count and the type of the returned object are 5807validated against the ACPI specification. The purpose of this validation 5808is 5809to detect problems with the BIOS-implemented predefined ACPI objects 5810before 5811the results are returned to the ACPI-related drivers. Future enhancements 5812may 5813include actual repair of incorrect return objects where possible. Two new 5814files are nspredef.c and acpredef.h. 5815 5816Fixed a fault in the AML parser if a memory allocation fails during the 5817Op 5818completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 5819 5820Fixed an issue with implicit return compatibility. This change improves 5821the 5822implicit return mechanism to be more compatible with the MS interpreter. 5823Lin 5824Ming, ACPICA BZ 349. 5825 5826Implemented support for zero-length buffer-to-string conversions. Allow 5827zero 5828length strings during interpreter buffer-to-string conversions. For 5829example, 5830during the ToDecimalString and ToHexString operators, as well as implicit 5831conversions. Fiodor Suietov, ACPICA BZ 585. 5832 5833Fixed two possible memory leaks in the error exit paths of 5834AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 5835are 5836similar in that they use a stack of state objects in order to eliminate 5837recursion. The stack must be fully unwound and deallocated if an error 5838occurs. Lin Ming. ACPICA BZ 383. 5839 5840Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 5841global 5842ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 5843Moore ACPICA BZ 442. 5844 5845Removed the obsolete version number in module headers. Removed the 5846"$Revision" number that appeared in each module header. This version 5847number 5848was useful under SourceSafe and CVS, but has no meaning under git. It is 5849not 5850only incorrect, it could also be misleading. 5851 5852Example Code and Data Size: These are the sizes for the OS-independent 5853acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5854debug version of the code includes the debug output trace mechanism and 5855has a 5856much larger code and data size. 5857 5858 Previous Release: 5859 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5860 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 5861 Current Release: 5862 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 5863 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 5864 5865---------------------------------------- 586629 August 2008. Summary of changes for version 20080829: 5867 58681) ACPI CA Core Subsystem: 5869 5870Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 5871Reference. Changes include the elimination of cheating on the Object 5872field 5873for the DdbHandle subtype, addition of a reference class field to 5874differentiate the various reference types (instead of an AML opcode), and 5875the 5876cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 5877 5878Reduce an error to a warning for an incorrect method argument count. 5879Previously aborted with an error if too few arguments were passed to a 5880control method via the external ACPICA interface. Now issue a warning 5881instead 5882and continue. Handles the case where the method inadvertently declares 5883too 5884many arguments, but does not actually use the extra ones. Applies mainly 5885to 5886the predefined methods. Lin Ming. Linux BZ 11032. 5887 5888Disallow the evaluation of named object types with no intrinsic value. 5889Return 5890AE_TYPE for objects that have no value and therefore evaluation is 5891undefined: 5892Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 5893of 5894these types were allowed, but an exception would be generated at some 5895point 5896during the evaluation. Now, the error is generated up front. 5897 5898Fixed a possible memory leak in the AcpiNsGetExternalPathname function 5899(nsnames.c). Fixes a leak in the error exit path. 5900 5901Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 5902debug 5903levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 5904ACPI_EXCEPTION 5905interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 5906ACPI_LV_EVENTS. 5907 5908Removed obsolete and/or unused exception codes from the acexcep.h header. 5909There is the possibility that certain device drivers may be affected if 5910they 5911use any of these exceptions. 5912 5913The ACPICA documentation has been added to the public git source tree, 5914under 5915acpica/documents. Included are the ACPICA programmer reference, the iASL 5916compiler reference, and the changes.txt release logfile. 5917 5918Example Code and Data Size: These are the sizes for the OS-independent 5919acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5920debug version of the code includes the debug output trace mechanism and 5921has a 5922much larger code and data size. 5923 5924 Previous Release: 5925 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5926 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 5927 Current Release: 5928 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5929 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 5930 59312) iASL Compiler/Disassembler and Tools: 5932 5933Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 5934defines _SCP with 3 arguments. Previous versions defined it with only 1 5935argument. iASL now allows both definitions. 5936 5937iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 5938zero- 5939length subtables when disassembling ACPI tables. Also fixed a couple of 5940errors where a full 16-bit table type field was not extracted from the 5941input 5942properly. 5943 5944acpisrc: Improve comment counting mechanism for generating source code 5945statistics. Count first and last lines of multi-line comments as 5946whitespace, 5947not comment lines. Handle Linux legal header in addition to standard 5948acpica 5949header. 5950 5951---------------------------------------- 5952 595329 July 2008. Summary of changes for version 20080729: 5954 59551) ACPI CA Core Subsystem: 5956 5957Fix a possible deadlock in the GPE dispatch. Remove call to 5958AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 5959attempt 5960to acquire the GPE lock but can deadlock since the GPE lock is already 5961held 5962at dispatch time. This code was introduced in version 20060831 as a 5963response 5964to Linux BZ 6881 and has since been removed from Linux. 5965 5966Add a function to dereference returned reference objects. Examines the 5967return 5968object from a call to AcpiEvaluateObject. Any Index or RefOf references 5969are 5970automatically dereferenced in an attempt to return something useful 5971(these 5972reference types cannot be converted into an external ACPI_OBJECT.) 5973Provides 5974MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 5975 5976x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 5977subtables for the MADT and one new subtable for the SRAT. Includes 5978disassembler and AcpiSrc support. Data from the Intel 64 Architecture 5979x2APIC 5980Specification, June 2008. 5981 5982Additional error checking for pathname utilities. Add error check after 5983all 5984calls to AcpiNsGetPathnameLength. Add status return from 5985AcpiNsBuildExternalPath and check after all calls. Add parameter 5986validation 5987to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 5988 5989Return status from the global init function AcpiUtGlobalInitialize. This 5990is 5991used by both the kernel subsystem and the utilities such as iASL 5992compiler. 5993The function could possibly fail when the caches are initialized. Yang 5994Yi. 5995 5996Add a function to decode reference object types to strings. Created for 5997improved error messages. 5998 5999Improve object conversion error messages. Better error messages during 6000object 6001conversion from internal to the external ACPI_OBJECT. Used for external 6002calls 6003to AcpiEvaluateObject. 6004 6005Example Code and Data Size: These are the sizes for the OS-independent 6006acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6007debug version of the code includes the debug output trace mechanism and 6008has a 6009much larger code and data size. 6010 6011 Previous Release: 6012 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6013 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6014 Current Release: 6015 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6016 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6017 60182) iASL Compiler/Disassembler and Tools: 6019 6020Debugger: fix a possible hang when evaluating non-methods. Fixes a 6021problem 6022introduced in version 20080701. If the object being evaluated (via 6023execute 6024command) is not a method, the debugger can hang while trying to obtain 6025non- 6026existent parameters. 6027 6028iASL: relax error for using reserved "_T_x" identifiers. These names can 6029appear in a disassembled ASL file if they were emitted by the original 6030compiler. Instead of issuing an error or warning and forcing the user to 6031manually change these names, issue a remark instead. 6032 6033iASL: error if named object created in while loop. Emit an error if any 6034named 6035object is created within a While loop. If allowed, this code will 6036generate 6037a 6038run-time error on the second iteration of the loop when an attempt is 6039made 6040to 6041create the same named object twice. ACPICA bugzilla 730. 6042 6043iASL: Support absolute pathnames for include files. Add support for 6044absolute 6045pathnames within the Include operator. previously, only relative 6046pathnames 6047were supported. 6048 6049iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 6050Descriptor. 6051The ACPI spec requires one interrupt minimum. BZ 423 6052 6053iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 6054Handles the case for the Interrupt Resource Descriptor where 6055the ResourceSource argument is omitted but ResourceSourceIndex 6056is present. Now leave room for the Index. BZ 426 6057 6058iASL: Prevent error message if CondRefOf target does not exist. Fixes 6059cases 6060where an error message is emitted if the target does not exist. BZ 516 6061 6062iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 6063(get ACPI tables on Windows). This was apparently broken in version 606420070919. 6065 6066AcpiXtract: Handle EOF while extracting data. Correctly handle the case 6067where 6068the EOF happens immediately after the last table in the input file. Print 6069completion message. Previously, no message was displayed in this case. 6070 6071---------------------------------------- 607201 July 2008. Summary of changes for version 20080701: 6073 60740) Git source tree / acpica.org 6075 6076Fixed a problem where a git-clone from http would not transfer the entire 6077source tree. 6078 60791) ACPI CA Core Subsystem: 6080 6081Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 6082enable bit. Now performs a read-change-write of the enable register 6083instead 6084of simply writing out the cached enable mask. This will prevent 6085inadvertent 6086enabling of GPEs if a rogue GPE is received during initialization (before 6087GPE 6088handlers are installed.) 6089 6090Implemented a copy for dynamically loaded tables. Previously, dynamically 6091loaded tables were simply mapped - but on some machines this memory is 6092corrupted after suspend. Now copy the table to a local buffer. For the 6093OpRegion case, added checksum verify. Use the table length from the table 6094header, not the region length. For the Buffer case, use the table length 6095also. Dennis Noordsij, Bob Moore. BZ 10734 6096 6097Fixed a problem where the same ACPI table could not be dynamically loaded 6098and 6099unloaded more than once. Without this change, a table cannot be loaded 6100again 6101once it has been loaded/unloaded one time. The current mechanism does not 6102unregister a table upon an unload. During a load, if the same table is 6103found, 6104this no longer returns an exception. BZ 722 6105 6106Fixed a problem where the wrong descriptor length was calculated for the 6107EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 6108EndTag 6109are calculated as 12 bytes long, but the actual length in the internal 6110descriptor is 16 because of the round-up to 8 on the 64-bit build. 6111Reported 6112by Linn Crosetto. BZ 728 6113 6114Fixed a possible memory leak in the Unload operator. The DdbHandle 6115returned 6116by Load() did not have its reference count decremented during unload, 6117leading 6118to a memory leak. Lin Ming. BZ 727 6119 6120Fixed a possible memory leak when deleting thermal/processor objects. Any 6121associated notify handlers (and objects) were not being deleted. Fiodor 6122Suietov. BZ 506 6123 6124Fixed the ordering of the ASCII names in the global mutex table to match 6125the 6126actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 6127only. 6128Vegard Nossum. BZ 726 6129 6130Enhanced the AcpiGetObjectInfo interface to return the number of required 6131arguments if the object is a control method. Added this call to the 6132debugger 6133so the proper number of default arguments are passed to a method. This 6134prevents a warning when executing methods from AcpiExec. 6135 6136Added a check for an invalid handle in AcpiGetObjectInfo. Return 6137AE_BAD_PARAMETER if input handle is invalid. BZ 474 6138 6139Fixed an extraneous warning from exconfig.c on the 64-bit build. 6140 6141Example Code and Data Size: These are the sizes for the OS-independent 6142acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6143debug version of the code includes the debug output trace mechanism and 6144has a 6145much larger code and data size. 6146 6147 Previous Release: 6148 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6149 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6150 Current Release: 6151 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6152 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6153 61542) iASL Compiler/Disassembler and Tools: 6155 6156iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 6157resource descriptor names. 6158 6159iASL: Detect invalid ASCII characters in input (windows version). Removed 6160the 6161"-CF" flag from the flex compile, enables correct detection of non-ASCII 6162characters in the input. BZ 441 6163 6164iASL: Eliminate warning when result of LoadTable is not used. Eliminate 6165the 6166"result of operation not used" warning when the DDB handle returned from 6167LoadTable is not used. The warning is not needed. BZ 590 6168 6169AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 6170method 6171to 6172pass address of table to the AML. Added option to disable OpRegion 6173simulation 6174to allow creation of an OpRegion with a real address that was passed to 6175_CFG. 6176All of this allows testing of the Load and Unload operators from 6177AcpiExec. 6178 6179Debugger: update tables command for unloaded tables. Handle unloaded 6180tables 6181and use the standard table header output routine. 6182 6183---------------------------------------- 618409 June 2008. Summary of changes for version 20080609: 6185 61861) ACPI CA Core Subsystem: 6187 6188Implemented a workaround for reversed _PRT entries. A significant number 6189of 6190BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 6191change dynamically detects and repairs this problem. Provides 6192compatibility 6193with MS ACPI. BZ 6859 6194 6195Simplified the internal ACPI hardware interfaces to eliminate the locking 6196flag parameter from Register Read/Write. Added a new external interface, 6197AcpiGetRegisterUnlocked. 6198 6199Fixed a problem where the invocation of a GPE control method could hang. 6200This 6201was a regression introduced in 20080514. The new method argument count 6202validation mechanism can enter an infinite loop when a GPE method is 6203dispatched. Problem fixed by removing the obsolete code that passed GPE 6204block 6205information to the notify handler via the control method parameter 6206pointer. 6207 6208Fixed a problem where the _SST execution status was incorrectly returned 6209to 6210the caller of AcpiEnterSleepStatePrep. This was a regression introduced 6211in 621220080514. _SST is optional and a NOT_FOUND exception should never be 6213returned. BZ 716 6214 6215Fixed a problem where a deleted object could be accessed from within the 6216AML 6217parser. This was a regression introduced in version 20080123 as a fix for 6218the 6219Unload operator. Lin Ming. BZ 10669 6220 6221Cleaned up the debug operand dump mechanism. Eliminated unnecessary 6222operands 6223and eliminated the use of a negative index in a loop. Operands are now 6224displayed in the correct order, not backwards. This also fixes a 6225regression 6226introduced in 20080514 on 64-bit systems where the elimination of 6227ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 6228715 6229 6230Fixed a possible memory leak in EvPciConfigRegionSetup where the error 6231exit 6232path did not delete a locally allocated structure. 6233 6234Updated definitions for the DMAR and SRAT tables to synchronize with the 6235current specifications. Includes disassembler support. 6236 6237Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 6238loop termination value was used. Loop terminated on iteration early, 6239missing 6240one mutex. Linn Crosetto 6241 6242Example Code and Data Size: These are the sizes for the OS-independent 6243acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6244debug version of the code includes the debug output trace mechanism and 6245has a 6246much larger code and data size. 6247 6248 Previous Release: 6249 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6250 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6251 Current Release: 6252 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6253 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6254 62552) iASL Compiler/Disassembler and Tools: 6256 6257Disassembler: Implemented support for EisaId() within _CID objects. Now 6258disassemble integer _CID objects back to EisaId invocations, including 6259multiple integers within _CID packages. Includes single-step support for 6260debugger also. 6261 6262Disassembler: Added support for DMAR and SRAT table definition changes. 6263 6264---------------------------------------- 626514 May 2008. Summary of changes for version 20080514: 6266 62671) ACPI CA Core Subsystem: 6268 6269Fixed a problem where GPEs were enabled too early during the ACPICA 6270initialization. This could lead to "handler not installed" errors on some 6271machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 6272This 6273ensures that all operation regions and devices throughout the namespace 6274have 6275been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 6276 6277Implemented a change to the enter sleep code. Moved execution of the _GTS 6278method to just before setting sleep enable bit. The execution was moved 6279from 6280AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 6281immediately before the SLP_EN bit is set, as per the ACPI specification. 6282Luming Yu, BZ 1653. 6283 6284Implemented a fix to disable unknown GPEs (2nd version). Now always 6285disable 6286the GPE, even if ACPICA thinks that that it is already disabled. It is 6287possible that the AML or some other code has enabled the GPE unbeknownst 6288to 6289the ACPICA code. 6290 6291Fixed a problem with the Field operator where zero-length fields would 6292return 6293an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 6294ASL 6295field declarations in Field(), BankField(), and IndexField(). BZ 10606. 6296 6297Implemented a fix for the Load operator, now load the table at the 6298namespace 6299root. This reverts a change introduced in version 20071019. The table is 6300now 6301loaded at the namespace root even though this goes against the ACPI 6302specification. This provides compatibility with other ACPI 6303implementations. 6304The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 6305Ming. 6306 6307Fixed a problem where ACPICA would not Load() tables with unusual 6308signatures. 6309Now ignore ACPI table signature for Load() operator. Only "SSDT" is 6310acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 6311Therefore, signature validation is worthless. Apparently MS ACPI accepts 6312such 6313signatures, ACPICA must be compatible. BZ 10454. 6314 6315Fixed a possible negative array index in AcpiUtValidateException. Added 6316NULL 6317fields to the exception string arrays to eliminate a -1 subtraction on 6318the 6319SubStatus field. 6320 6321Updated the debug tracking macros to reduce overall code and data size. 6322Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 6323instead of pointers to static strings. Jan Beulich and Bob Moore. 6324 6325Implemented argument count checking in control method invocation via 6326AcpiEvaluateObject. Now emit an error if too few arguments, warning if 6327too 6328many. This applies only to extern programmatic control method execution, 6329not 6330method-to-method calls within the AML. Lin Ming. 6331 6332Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 6333no 6334longer needed, especially with the removal of 16-bit support. It was 6335replaced 6336mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 6337bit 6338on 633932/64-bit platforms is required. 6340 6341Added the C const qualifier for appropriate string constants -- mostly 6342MODULE_NAME and printf format strings. Jan Beulich. 6343 6344Example Code and Data Size: These are the sizes for the OS-independent 6345acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6346debug version of the code includes the debug output trace mechanism and 6347has a 6348much larger code and data size. 6349 6350 Previous Release: 6351 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6352 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6353 Current Release: 6354 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6355 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6356 63572) iASL Compiler/Disassembler and Tools: 6358 6359Implemented ACPI table revision ID validation in the disassembler. Zero 6360is 6361always invalid. For DSDTs, the ID controls the interpreter integer width. 63621 6363means 32-bit and this is unusual. 2 or greater is 64-bit. 6364 6365---------------------------------------- 636621 March 2008. Summary of changes for version 20080321: 6367 63681) ACPI CA Core Subsystem: 6369 6370Implemented an additional change to the GPE support in order to suppress 6371spurious or stray GPEs. The AcpiEvDisableGpe function will now 6372permanently 6373disable incoming GPEs that are neither enabled nor disabled -- meaning 6374that 6375the GPE is unknown to the system. This should prevent future interrupt 6376floods 6377from that GPE. BZ 6217 (Zhang Rui) 6378 6379Fixed a problem where NULL package elements were not returned to the 6380AcpiEvaluateObject interface correctly. The element was simply ignored 6381instead of returning a NULL ACPI_OBJECT package element, potentially 6382causing 6383a buffer overflow and/or confusing the caller who expected a fixed number 6384of 6385elements. BZ 10132 (Lin Ming, Bob Moore) 6386 6387Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 6388Dword, 6389Qword), Field, BankField, and IndexField operators when invoked from 6390inside 6391an executing control method. In this case, these operators created 6392namespace 6393nodes that were incorrectly left marked as permanent nodes instead of 6394temporary nodes. This could cause a problem if there is race condition 6395between an exiting control method and a running namespace walk. (Reported 6396by 6397Linn Crosetto) 6398 6399Fixed a problem where the CreateField and CreateXXXField operators would 6400incorrectly allow duplicate names (the name of the field) with no 6401exception 6402generated. 6403 6404Implemented several changes for Notify handling. Added support for new 6405Notify 6406values (ACPI 2.0+) and improved the Notify debug output. Notify on 6407PowerResource objects is no longer allowed, as per the ACPI 6408specification. 6409(Bob Moore, Zhang Rui) 6410 6411All Reference Objects returned via the AcpiEvaluateObject interface are 6412now 6413marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 6414for 6415NULL objects - either NULL package elements or unresolved named 6416references. 6417 6418Fixed a problem where an extraneous debug message was produced for 6419package 6420objects (when debugging enabled). The message "Package List length larger 6421than NumElements count" is now produced in the correct case, and is now 6422an 6423error message rather than a debug message. Added a debug message for the 6424opposite case, where NumElements is larger than the Package List (the 6425package 6426will be padded out with NULL elements as per the ACPI spec.) 6427 6428Implemented several improvements for the output of the ASL "Debug" object 6429to 6430clarify and keep all data for a given object on one output line. 6431 6432Fixed two size calculation issues with the variable-length Start 6433Dependent 6434resource descriptor. 6435 6436Example Code and Data Size: These are the sizes for the OS-independent 6437acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6438debug version of the code includes the debug output trace mechanism and 6439has 6440a much larger code and data size. 6441 6442 Previous Release: 6443 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 6444 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 6445 Current Release: 6446 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6447 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6448 64492) iASL Compiler/Disassembler and Tools: 6450 6451Fixed a problem with the use of the Switch operator where execution of 6452the 6453containing method by multiple concurrent threads could cause an 6454AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 6455actual Switch opcode, it must be simulated with local named temporary 6456variables and if/else pairs. The solution chosen was to mark any method 6457that 6458uses Switch as Serialized, thus preventing multiple thread entries. BZ 6459469. 6460 6461---------------------------------------- 646213 February 2008. Summary of changes for version 20080213: 6463 64641) ACPI CA Core Subsystem: 6465 6466Implemented another MS compatibility design change for GPE/Notify 6467handling. 6468GPEs are now cleared/enabled asynchronously to allow all pending notifies 6469to 6470complete first. It is expected that the OSL will queue the enable request 6471behind all pending notify requests (may require changes to the local host 6472OSL 6473in AcpiOsExecute). Alexey Starikovskiy. 6474 6475Fixed a problem where buffer and package objects passed as arguments to a 6476control method via the external AcpiEvaluateObject interface could cause 6477an 6478AE_AML_INTERNAL exception depending on the order and type of operators 6479executed by the target control method. 6480 6481Fixed a problem where resource descriptor size optimization could cause a 6482problem when a _CRS resource template is passed to a _SRS method. The 6483_SRS 6484resource template must use the same descriptors (with the same size) as 6485returned from _CRS. This change affects the following resource 6486descriptors: 6487IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 64889487) 6489 6490Fixed a problem where a CopyObject to RegionField, BankField, and 6491IndexField 6492objects did not perform an implicit conversion as it should. These types 6493must 6494retain their initial type permanently as per the ACPI specification. 6495However, 6496a CopyObject to all other object types should not perform an implicit 6497conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 6498 6499Fixed a problem with the AcpiGetDevices interface where the mechanism to 6500match device CIDs did not examine the entire list of available CIDs, but 6501instead aborted on the first non-matching CID. Andrew Patterson. 6502 6503Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 6504was 6505inadvertently changed to return a 16-bit value instead of a 32-bit value, 6506truncating the upper dword of a 64-bit value. This macro is only used to 6507display debug output, so no incorrect calculations were made. Also, 6508reimplemented the macro so that a 64-bit shift is not performed by 6509inefficient compilers. 6510 6511Added missing va_end statements that should correspond with each va_start 6512statement. 6513 6514Example Code and Data Size: These are the sizes for the OS-independent 6515acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6516debug version of the code includes the debug output trace mechanism and 6517has 6518a much larger code and data size. 6519 6520 Previous Release: 6521 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 6522 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 6523 Current Release: 6524 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 6525 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 6526 65272) iASL Compiler/Disassembler and Tools: 6528 6529Implemented full disassembler support for the following new ACPI tables: 6530BERT, EINJ, and ERST. Implemented partial disassembler support for the 6531complicated HEST table. These tables support the Windows Hardware Error 6532Architecture (WHEA). 6533 6534---------------------------------------- 653523 January 2008. Summary of changes for version 20080123: 6536 65371) ACPI CA Core Subsystem: 6538 6539Added the 2008 copyright to all module headers and signons. This affects 6540virtually every file in the ACPICA core subsystem, the iASL compiler, and 6541the tools/utilities. 6542 6543Fixed a problem with the SizeOf operator when used with Package and 6544Buffer 6545objects. These objects have deferred execution for some arguments, and 6546the 6547execution is now completed before the SizeOf is executed. This problem 6548caused 6549unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 6550BZ 65519558 6552 6553Implemented an enhancement to the interpreter "slack mode". In the 6554absence 6555of 6556an explicit return or an implicitly returned object from the last 6557executed 6558opcode, a control method will now implicitly return an integer of value 0 6559for 6560Microsoft compatibility. (Lin Ming) BZ 392 6561 6562Fixed a problem with the Load operator where an exception was not 6563returned 6564in 6565the case where the table is already loaded. (Lin Ming) BZ 463 6566 6567Implemented support for the use of DDBHandles as an Indexed Reference, as 6568per 6569the ACPI spec. (Lin Ming) BZ 486 6570 6571Implemented support for UserTerm (Method invocation) for the Unload 6572operator 6573as per the ACPI spec. (Lin Ming) BZ 580 6574 6575Fixed a problem with the LoadTable operator where the OemId and 6576OemTableId 6577input strings could cause unexpected failures if they were shorter than 6578the 6579maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 6580 6581Implemented support for UserTerm (Method invocation) for the Unload 6582operator 6583as per the ACPI spec. (Lin Ming) BZ 580 6584 6585Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 6586HEST, 6587IBFT, UEFI, WDAT. Disassembler support is forthcoming. 6588 6589Example Code and Data Size: These are the sizes for the OS-independent 6590acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6591debug version of the code includes the debug output trace mechanism and 6592has 6593a much larger code and data size. 6594 6595 Previous Release: 6596 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 6597 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 6598 Current Release: 6599 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 6600 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 6601 66022) iASL Compiler/Disassembler and Tools: 6603 6604Implemented support in the disassembler for checksum validation on 6605incoming 6606binary DSDTs and SSDTs. If incorrect, a message is displayed within the 6607table 6608header dump at the start of the disassembly. 6609 6610Implemented additional debugging information in the namespace listing 6611file 6612created during compilation. In addition to the namespace hierarchy, the 6613full 6614pathname to each namespace object is displayed. 6615 6616Fixed a problem with the disassembler where invalid ACPI tables could 6617cause 6618faults or infinite loops. 6619 6620Fixed an unexpected parse error when using the optional "parameter types" 6621list in a control method declaration. (Lin Ming) BZ 397 6622 6623Fixed a problem where two External declarations with the same name did 6624not 6625cause an error (Lin Ming) BZ 509 6626 6627Implemented support for full TermArgs (adding Argx, Localx and method 6628invocation) for the ParameterData parameter to the LoadTable operator. 6629(Lin 6630Ming) BZ 583,587 6631 6632---------------------------------------- 663319 December 2007. Summary of changes for version 20071219: 6634 66351) ACPI CA Core Subsystem: 6636 6637Implemented full support for deferred execution for the TermArg string 6638arguments for DataTableRegion. This enables forward references and full 6639operand resolution for the three string arguments. Similar to 6640OperationRegion 6641deferred argument execution.) Lin Ming. BZ 430 6642 6643Implemented full argument resolution support for the BankValue argument 6644to 6645BankField. Previously, only constants were supported, now any TermArg may 6646be 6647used. Lin Ming BZ 387, 393 6648 6649Fixed a problem with AcpiGetDevices where the search of a branch of the 6650device tree could be terminated prematurely. In accordance with the ACPI 6651specification, the search down the current branch is terminated if a 6652device 6653is both not present and not functional (instead of just not present.) 6654Yakui 6655Zhao. 6656 6657Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 6658if 6659the underlying AML code changed the GPE enable registers. Now, any 6660unknown 6661incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 6662disabled 6663instead of simply ignored. Rui Zhang. 6664 6665Fixed a problem with Index Fields where the Index register was 6666incorrectly 6667limited to a maximum of 32 bits. Now any size may be used. 6668 6669Fixed a couple memory leaks associated with "implicit return" objects 6670when 6671the AML Interpreter slack mode is enabled. Lin Ming BZ 349 6672 6673Example Code and Data Size: These are the sizes for the OS-independent 6674acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6675debug version of the code includes the debug output trace mechanism and 6676has 6677a much larger code and data size. 6678 6679 Previous Release: 6680 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 6681 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 6682 Current Release: 6683 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 6684 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 6685 6686---------------------------------------- 668714 November 2007. Summary of changes for version 20071114: 6688 66891) ACPI CA Core Subsystem: 6690 6691Implemented event counters for each of the Fixed Events, the ACPI SCI 6692(interrupt) itself, and control methods executed. Named 6693AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 6694These 6695should be useful for debugging and statistics. 6696 6697Implemented a new external interface, AcpiGetStatistics, to retrieve the 6698contents of the various event counters. Returns the current values for 6699AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 6700AcpiMethodCount. The interface can be expanded in the future if new 6701counters 6702are added. Device drivers should use this interface rather than access 6703the 6704counters directly. 6705 6706Fixed a problem with the FromBCD and ToBCD operators. With some 6707compilers, 6708the ShortDivide function worked incorrectly, causing problems with the 6709BCD 6710functions with large input values. A truncation from 64-bit to 32-bit 6711inadvertently occurred. Internal BZ 435. Lin Ming 6712 6713Fixed a problem with Index references passed as method arguments. 6714References 6715passed as arguments to control methods were dereferenced immediately 6716(before 6717control was passed to the called method). The references are now 6718correctly 6719passed directly to the called method. BZ 5389. Lin Ming 6720 6721Fixed a problem with CopyObject used in conjunction with the Index 6722operator. 6723The reference was incorrectly dereferenced before the copy. The reference 6724is 6725now correctly copied. BZ 5391. Lin Ming 6726 6727Fixed a problem with Control Method references within Package objects. 6728These 6729references are now correctly generated. This completes the package 6730construction overhaul that began in version 20071019. 6731 6732Example Code and Data Size: These are the sizes for the OS-independent 6733acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6734debug version of the code includes the debug output trace mechanism and 6735has 6736a much larger code and data size. 6737 6738 Previous Release: 6739 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 6740 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 6741 Current Release: 6742 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 6743 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 6744 6745 67462) iASL Compiler/Disassembler and Tools: 6747 6748The AcpiExec utility now installs handlers for all of the predefined 6749Operation Region types. New types supported are: PCI_Config, CMOS, and 6750PCIBARTarget. 6751 6752Fixed a problem with the 64-bit version of AcpiExec where the extended 6753(64- 6754bit) address fields for the DSDT and FACS within the FADT were not being 6755used, causing truncation of the upper 32-bits of these addresses. Lin 6756Ming 6757and Bob Moore 6758 6759---------------------------------------- 676019 October 2007. Summary of changes for version 20071019: 6761 67621) ACPI CA Core Subsystem: 6763 6764Fixed a problem with the Alias operator when the target of the alias is a 6765named ASL operator that opens a new scope -- Scope, Device, 6766PowerResource, 6767Processor, and ThermalZone. In these cases, any children of the original 6768operator could not be accessed via the alias, potentially causing 6769unexpected 6770AE_NOT_FOUND exceptions. (BZ 9067) 6771 6772Fixed a problem with the Package operator where all named references were 6773created as object references and left otherwise unresolved. According to 6774the 6775ACPI specification, a Package can only contain Data Objects or references 6776to 6777control methods. The implication is that named references to Data Objects 6778(Integer, Buffer, String, Package, BufferField, Field) should be resolved 6779immediately upon package creation. This is the approach taken with this 6780change. References to all other named objects (Methods, Devices, Scopes, 6781etc.) are all now properly created as reference objects. (BZ 5328) 6782 6783Reverted a change to Notify handling that was introduced in version 678420070508. This version changed the Notify handling from asynchronous to 6785fully synchronous (Device driver Notify handling with respect to the 6786Notify 6787ASL operator). It was found that this change caused more problems than it 6788solved and was removed by most users. 6789 6790Fixed a problem with the Increment and Decrement operators where the type 6791of 6792the target object could be unexpectedly and incorrectly changed. (BZ 353) 6793Lin Ming. 6794 6795Fixed a problem with the Load and LoadTable operators where the table 6796location within the namespace was ignored. Instead, the table was always 6797loaded into the root or current scope. Lin Ming. 6798 6799Fixed a problem with the Load operator when loading a table from a buffer 6800object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 6801 6802Fixed a problem with the Debug object where a store of a DdbHandle 6803reference 6804object to the Debug object could cause a fault. 6805 6806Added a table checksum verification for the Load operator, in the case 6807where 6808the load is from a buffer. (BZ 578). 6809 6810Implemented additional parameter validation for the LoadTable operator. 6811The 6812length of the input strings SignatureString, OemIdString, and OemTableId 6813are 6814now checked for maximum lengths. (BZ 582) Lin Ming. 6815 6816Example Code and Data Size: These are the sizes for the OS-independent 6817acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6818debug version of the code includes the debug output trace mechanism and 6819has 6820a much larger code and data size. 6821 6822 Previous Release: 6823 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 6824 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 6825 Current Release: 6826 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 6827 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 6828 6829 68302) iASL Compiler/Disassembler: 6831 6832Fixed a problem where if a single file was specified and the file did not 6833exist, no error message was emitted. (Introduced with wildcard support in 6834version 20070917.) 6835 6836---------------------------------------- 683719 September 2007. Summary of changes for version 20070919: 6838 68391) ACPI CA Core Subsystem: 6840 6841Designed and implemented new external interfaces to install and remove 6842handlers for ACPI table-related events. Current events that are defined 6843are 6844LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 6845they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 6846AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 6847 6848Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 6849(acpi_serialized option on Linux) could cause some systems to hang during 6850initialization. (Bob Moore) BZ 8171 6851 6852Fixed a problem where objects of certain types (Device, ThermalZone, 6853Processor, PowerResource) can be not found if they are declared and 6854referenced from within the same control method (Lin Ming) BZ 341 6855 6856Example Code and Data Size: These are the sizes for the OS-independent 6857acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6858debug version of the code includes the debug output trace mechanism and 6859has 6860a much larger code and data size. 6861 6862 Previous Release: 6863 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 6864 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 6865 Current Release: 6866 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 6867 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 6868 6869 68702) iASL Compiler/Disassembler: 6871 6872Implemented support to allow multiple files to be compiled/disassembled 6873in 6874a 6875single invocation. This includes command line wildcard support for both 6876the 6877Windows and Unix versions of the compiler. This feature simplifies the 6878disassembly and compilation of multiple ACPI tables in a single 6879directory. 6880 6881---------------------------------------- 688208 May 2007. Summary of changes for version 20070508: 6883 68841) ACPI CA Core Subsystem: 6885 6886Implemented a Microsoft compatibility design change for the handling of 6887the 6888Notify AML operator. Previously, notify handlers were dispatched and 6889executed completely asynchronously in a deferred thread. The new design 6890still executes the notify handlers in a different thread, but the 6891original 6892thread that executed the Notify() now waits at a synchronization point 6893for 6894the notify handler to complete. Some machines depend on a synchronous 6895Notify 6896operator in order to operate correctly. 6897 6898Implemented support to allow Package objects to be passed as method 6899arguments to the external AcpiEvaluateObject interface. Previously, this 6900would return the AE_NOT_IMPLEMENTED exception. This feature had not been 6901implemented since there were no reserved control methods that required it 6902until recently. 6903 6904Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 6905that 6906contained invalid non-zero values in reserved fields could cause later 6907failures because these fields have meaning in later revisions of the 6908FADT. 6909For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 6910fields 6911are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 6912 6913Fixed a problem where the Global Lock handle was not properly updated if 6914a 6915thread that acquired the Global Lock via executing AML code then 6916attempted 6917to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 6918Joe 6919Liu. 6920 6921Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 6922could be corrupted if the interrupt being removed was at the head of the 6923list. Reported by Linn Crosetto. 6924 6925Example Code and Data Size: These are the sizes for the OS-independent 6926acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6927debug version of the code includes the debug output trace mechanism and 6928has 6929a much larger code and data size. 6930 6931 Previous Release: 6932 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6933 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 6934 Current Release: 6935 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 6936 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 6937 6938---------------------------------------- 693920 March 2007. Summary of changes for version 20070320: 6940 69411) ACPI CA Core Subsystem: 6942 6943Implemented a change to the order of interpretation and evaluation of AML 6944operand objects within the AML interpreter. The interpreter now evaluates 6945operands in the order that they appear in the AML stream (and the 6946corresponding ASL code), instead of in the reverse order (after the 6947entire 6948operand list has been parsed). The previous behavior caused several 6949subtle 6950incompatibilities with the Microsoft AML interpreter as well as being 6951somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 6952 6953Implemented a change to the ACPI Global Lock support. All interfaces to 6954the 6955global lock now allow the same thread to acquire the lock multiple times. 6956This affects the AcpiAcquireGlobalLock external interface to the global 6957lock 6958as well as the internal use of the global lock to support AML fields -- a 6959control method that is holding the global lock can now simultaneously 6960access 6961AML fields that require global lock protection. Previously, in both 6962cases, 6963this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 6964to 6965AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 6966Controller. There is no change to the behavior of the AML Acquire 6967operator, 6968as this can already be used to acquire a mutex multiple times by the same 6969thread. BZ 8066. With assistance from Alexey Starikovskiy. 6970 6971Fixed a problem where invalid objects could be referenced in the AML 6972Interpreter after error conditions. During operand evaluation, ensure 6973that 6974the internal "Return Object" field is cleared on error and only valid 6975pointers are stored there. Caused occasional access to deleted objects 6976that 6977resulted in "large reference count" warning messages. Valery Podrezov. 6978 6979Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 6980on 6981deeply nested control method invocations. BZ 7873, local BZ 487. Valery 6982Podrezov. 6983 6984Fixed an internal problem with the handling of result objects on the 6985interpreter result stack. BZ 7872. Valery Podrezov. 6986 6987Removed obsolete code that handled the case where AML_NAME_OP is the 6988target 6989of a reference (Reference.Opcode). This code was no longer necessary. BZ 69907874. Valery Podrezov. 6991 6992Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 6993was 6994a 6995remnant from the previously discontinued 16-bit support. 6996 6997Example Code and Data Size: These are the sizes for the OS-independent 6998acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6999debug version of the code includes the debug output trace mechanism and 7000has 7001a much larger code and data size. 7002 7003 Previous Release: 7004 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7005 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7006 Current Release: 7007 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7008 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7009 7010---------------------------------------- 701126 January 2007. Summary of changes for version 20070126: 7012 70131) ACPI CA Core Subsystem: 7014 7015Added the 2007 copyright to all module headers and signons. This affects 7016virtually every file in the ACPICA core subsystem, the iASL compiler, and 7017the utilities. 7018 7019Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 7020during a table load. A bad pointer was passed in the case where the DSDT 7021is 7022overridden, causing a fault in this case. 7023 7024Example Code and Data Size: These are the sizes for the OS-independent 7025acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7026debug version of the code includes the debug output trace mechanism and 7027has 7028a much larger code and data size. 7029 7030 Previous Release: 7031 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7032 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7033 Current Release: 7034 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7035 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7036 7037---------------------------------------- 703815 December 2006. Summary of changes for version 20061215: 7039 70401) ACPI CA Core Subsystem: 7041 7042Support for 16-bit ACPICA has been completely removed since it is no 7043longer 7044necessary and it clutters the code. All 16-bit macros, types, and 7045conditional compiles have been removed, cleaning up and simplifying the 7046code 7047across the entire subsystem. DOS support is no longer needed since the 7048bootable Linux firmware kit is now available. 7049 7050The handler for the Global Lock is now removed during AcpiTerminate to 7051enable a clean subsystem restart, via the implementation of the 7052AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 7053HP) 7054 7055Implemented enhancements to the multithreading support within the 7056debugger 7057to enable improved multithreading debugging and evaluation of the 7058subsystem. 7059(Valery Podrezov) 7060 7061Debugger: Enhanced the Statistics/Memory command to emit the total 7062(maximum) 7063memory used during the execution, as well as the maximum memory consumed 7064by 7065each of the various object types. (Valery Podrezov) 7066 7067Example Code and Data Size: These are the sizes for the OS-independent 7068acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7069debug version of the code includes the debug output trace mechanism and 7070has 7071a much larger code and data size. 7072 7073 Previous Release: 7074 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7075 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7076 Current Release: 7077 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7078 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7079 7080 70812) iASL Compiler/Disassembler and Tools: 7082 7083AcpiExec: Implemented a new option (-m) to display full memory use 7084statistics upon subsystem/program termination. (Valery Podrezov) 7085 7086---------------------------------------- 708709 November 2006. Summary of changes for version 20061109: 7088 70891) ACPI CA Core Subsystem: 7090 7091Optimized the Load ASL operator in the case where the source operand is 7092an 7093operation region. Simply map the operation region memory, instead of 7094performing a bytewise read. (Region must be of type SystemMemory, see 7095below.) 7096 7097Fixed the Load ASL operator for the case where the source operand is a 7098region field. A buffer object is also allowed as the source operand. BZ 7099480 7100 7101Fixed a problem where the Load ASL operator allowed the source operand to 7102be 7103an operation region of any type. It is now restricted to regions of type 7104SystemMemory, as per the ACPI specification. BZ 481 7105 7106Additional cleanup and optimizations for the new Table Manager code. 7107 7108AcpiEnable will now fail if all of the required ACPI tables are not 7109loaded 7110(FADT, FACS, DSDT). BZ 477 7111 7112Added #pragma pack(8/4) to acobject.h to ensure that the structures in 7113this 7114header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 7115manually optimized to be aligned and will not work if it is byte-packed. 7116 7117Example Code and Data Size: These are the sizes for the OS-independent 7118acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7119debug version of the code includes the debug output trace mechanism and 7120has 7121a much larger code and data size. 7122 7123 Previous Release: 7124 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7125 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7126 Current Release: 7127 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7128 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7129 7130 71312) iASL Compiler/Disassembler and Tools: 7132 7133Fixed a problem where the presence of the _OSI predefined control method 7134within complex expressions could cause an internal compiler error. 7135 7136AcpiExec: Implemented full region support for multiple address spaces. 7137SpaceId is now part of the REGION object. BZ 429 7138 7139---------------------------------------- 714011 October 2006. Summary of changes for version 20061011: 7141 71421) ACPI CA Core Subsystem: 7143 7144Completed an AML interpreter performance enhancement for control method 7145execution. Previously a 2-pass parse/execution, control methods are now 7146completely parsed and executed in a single pass. This improves overall 7147interpreter performance by ~25%, reduces code size, and reduces CPU stack 7148use. (Valery Podrezov + interpreter changes in version 20051202 that 7149eliminated namespace loading during the pass one parse.) 7150 7151Implemented _CID support for PCI Root Bridge detection. If the _HID does 7152not 7153match the predefined PCI Root Bridge IDs, the _CID list (if present) is 7154now 7155obtained and also checked for an ID match. 7156 7157Implemented additional support for the PCI _ADR execution: upsearch until 7158a 7159device scope is found before executing _ADR. This allows PCI_Config 7160operation regions to be declared locally within control methods 7161underneath 7162PCI device objects. 7163 7164Fixed a problem with a possible race condition between threads executing 7165AcpiWalkNamespace and the AML interpreter. This condition was removed by 7166modifying AcpiWalkNamespace to (by default) ignore all temporary 7167namespace 7168entries created during any concurrent control method execution. An 7169additional namespace race condition is known to exist between 7170AcpiWalkNamespace and the Load/Unload ASL operators and is still under 7171investigation. 7172 7173Restructured the AML ParseLoop function, breaking it into several 7174subfunctions in order to reduce CPU stack use and improve 7175maintainability. 7176(Mikhail Kouzmich) 7177 7178AcpiGetHandle: Fix for parameter validation to detect invalid 7179combinations 7180of prefix handle and pathname. BZ 478 7181 7182Example Code and Data Size: These are the sizes for the OS-independent 7183acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7184debug version of the code includes the debug output trace mechanism and 7185has 7186a much larger code and data size. 7187 7188 Previous Release: 7189 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7190 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7191 Current Release: 7192 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7193 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7194 71952) iASL Compiler/Disassembler and Tools: 7196 7197Ported the -g option (get local ACPI tables) to the new ACPICA Table 7198Manager 7199to restore original behavior. 7200 7201---------------------------------------- 720227 September 2006. Summary of changes for version 20060927: 7203 72041) ACPI CA Core Subsystem: 7205 7206Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 7207These functions now use a spinlock for mutual exclusion and the interrupt 7208level indication flag is not needed. 7209 7210Fixed a problem with the Global Lock where the lock could appear to be 7211obtained before it is actually obtained. The global lock semaphore was 7212inadvertently created with one unit instead of zero units. (BZ 464) 7213Fiodor 7214Suietov. 7215 7216Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 7217during 7218a read from a buffer or region field. (BZ 458) Fiodor Suietov. 7219 7220Example Code and Data Size: These are the sizes for the OS-independent 7221acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7222debug version of the code includes the debug output trace mechanism and 7223has 7224a much larger code and data size. 7225 7226 Previous Release: 7227 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7228 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7229 Current Release: 7230 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7231 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7232 7233 72342) iASL Compiler/Disassembler and Tools: 7235 7236Fixed a compilation problem with the pre-defined Resource Descriptor 7237field 7238names where an "object does not exist" error could be incorrectly 7239generated 7240if the parent ResourceTemplate pathname places the template within a 7241different namespace scope than the current scope. (BZ 7212) 7242 7243Fixed a problem where the compiler could hang after syntax errors 7244detected 7245in an ElseIf construct. (BZ 453) 7246 7247Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 7248operator. An incorrect output filename was produced when this parameter 7249was 7250a null string (""). Now, the original input filename is used as the AML 7251output filename, with an ".aml" extension. 7252 7253Implemented a generic batch command mode for the AcpiExec utility 7254(execute 7255any AML debugger command) (Valery Podrezov). 7256 7257---------------------------------------- 725812 September 2006. Summary of changes for version 20060912: 7259 72601) ACPI CA Core Subsystem: 7261 7262Enhanced the implementation of the "serialized mode" of the interpreter 7263(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 7264specified, instead of creating a serialization semaphore per control 7265method, 7266the interpreter lock is simply no longer released before a blocking 7267operation during control method execution. This effectively makes the AML 7268Interpreter single-threaded. The overhead of a semaphore per-method is 7269eliminated. 7270 7271Fixed a regression where an error was no longer emitted if a control 7272method 7273attempts to create 2 objects of the same name. This once again returns 7274AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 7275that 7276will dynamically serialize the control method to possible prevent future 7277errors. (BZ 440) 7278 7279Integrated a fix for a problem with PCI Express HID detection in the PCI 7280Config Space setup procedure. (BZ 7145) 7281 7282Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 7283AcpiHwInitialize function - the FADT registers are now validated when the 7284table is loaded. 7285 7286Added two new warnings during FADT verification - 1) if the FADT is 7287larger 7288than the largest known FADT version, and 2) if there is a mismatch 7289between 7290a 729132-bit block address and the 64-bit X counterpart (when both are non- 7292zero.) 7293 7294Example Code and Data Size: These are the sizes for the OS-independent 7295acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7296debug version of the code includes the debug output trace mechanism and 7297has 7298a much larger code and data size. 7299 7300 Previous Release: 7301 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7302 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7303 Current Release: 7304 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7305 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7306 7307 73082) iASL Compiler/Disassembler and Tools: 7309 7310Fixed a problem with the implementation of the Switch() operator where 7311the 7312temporary variable was declared too close to the actual Switch, instead 7313of 7314at method level. This could cause a problem if the Switch() operator is 7315within a while loop, causing an error on the second iteration. (BZ 460) 7316 7317Disassembler - fix for error emitted for unknown type for target of scope 7318operator. Now, ignore it and continue. 7319 7320Disassembly of an FADT now verifies the input FADT and reports any errors 7321found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 7322 7323Disassembly of raw data buffers with byte initialization data now 7324prefixes 7325each output line with the current buffer offset. 7326 7327Disassembly of ASF! table now includes all variable-length data fields at 7328the end of some of the subtables. 7329 7330The disassembler now emits a comment if a buffer appears to be a 7331ResourceTemplate, but cannot be disassembled as such because the EndTag 7332does 7333not appear at the very end of the buffer. 7334 7335AcpiExec - Added the "-t" command line option to enable the serialized 7336mode 7337of the AML interpreter. 7338 7339---------------------------------------- 734031 August 2006. Summary of changes for version 20060831: 7341 73421) ACPI CA Core Subsystem: 7343 7344Miscellaneous fixes for the Table Manager: 7345- Correctly initialize internal common FADT for all 64-bit "X" fields 7346- Fixed a couple table mapping issues during table load 7347- Fixed a couple alignment issues for IA64 7348- Initialize input array to zero in AcpiInitializeTables 7349- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 7350AcpiGetTableByIndex 7351 7352Change for GPE support: when a "wake" GPE is received, all wake GPEs are 7353now 7354immediately disabled to prevent the waking GPE from firing again and to 7355prevent other wake GPEs from interrupting the wake process. 7356 7357Added the AcpiGpeCount global that tracks the number of processed GPEs, 7358to 7359be used for debugging systems with a large number of ACPI interrupts. 7360 7361Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 7362both the ACPICA headers and the disassembler. 7363 7364Example Code and Data Size: These are the sizes for the OS-independent 7365acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7366debug version of the code includes the debug output trace mechanism and 7367has 7368a much larger code and data size. 7369 7370 Previous Release: 7371 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7372 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7373 Current Release: 7374 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7375 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7376 7377 73782) iASL Compiler/Disassembler and Tools: 7379 7380Disassembler support for the DMAR ACPI table. 7381 7382---------------------------------------- 738323 August 2006. Summary of changes for version 20060823: 7384 73851) ACPI CA Core Subsystem: 7386 7387The Table Manager component has been completely redesigned and 7388reimplemented. The new design is much simpler, and reduces the overall 7389code 7390and data size of the kernel-resident ACPICA by approximately 5%. Also, it 7391is 7392now possible to obtain the ACPI tables very early during kernel 7393initialization, even before dynamic memory management is initialized. 7394(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 7395 7396Obsolete ACPICA interfaces: 7397 7398- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 7399init 7400time). 7401- AcpiLoadTable: Not needed. 7402- AcpiUnloadTable: Not needed. 7403 7404New ACPICA interfaces: 7405 7406- AcpiInitializeTables: Must be called before the table manager can be 7407used. 7408- AcpiReallocateRootTable: Used to transfer the root table to dynamically 7409allocated memory after it becomes available. 7410- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 7411tables 7412in the RSDT/XSDT. 7413 7414Other ACPICA changes: 7415 7416- AcpiGetTableHeader returns the actual mapped table header, not a copy. 7417Use 7418AcpiOsUnmapMemory to free this mapping. 7419- AcpiGetTable returns the actual mapped table. The mapping is managed 7420internally and must not be deleted by the caller. Use of this interface 7421causes no additional dynamic memory allocation. 7422- AcpiFindRootPointer: Support for physical addressing has been 7423eliminated, 7424it appeared to be unused. 7425- The interface to AcpiOsMapMemory has changed to be consistent with the 7426other allocation interfaces. 7427- The interface to AcpiOsGetRootPointer has changed to eliminate 7428unnecessary 7429parameters. 7430- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 743164- 7432bit platforms. Was previously 64 bits on all platforms. 7433- The interface to the ACPI Global Lock acquire/release macros have 7434changed 7435slightly since ACPICA no longer keeps a local copy of the FACS with a 7436constructed pointer to the actual global lock. 7437 7438Porting to the new table manager: 7439 7440- AcpiInitializeTables: Must be called once, and can be called anytime 7441during the OS initialization process. It allows the host to specify an 7442area 7443of memory to be used to store the internal version of the RSDT/XSDT (root 7444table). This allows the host to access ACPI tables before memory 7445management 7446is initialized and running. 7447- AcpiReallocateRootTable: Can be called after memory management is 7448running 7449to copy the root table to a dynamically allocated array, freeing up the 7450scratch memory specified in the call to AcpiInitializeTables. 7451- AcpiSubsystemInitialize: This existing interface is independent of the 7452Table Manager, and does not have to be called before the Table Manager 7453can 7454be used, it only must be called before the rest of ACPICA can be used. 7455- ACPI Tables: Some changes have been made to the names and structure of 7456the 7457actbl.h and actbl1.h header files and may require changes to existing 7458code. 7459For example, bitfields have been completely removed because of their lack 7460of 7461portability across C compilers. 7462- Update interfaces to the Global Lock acquire/release macros if local 7463versions are used. (see acwin.h) 7464 7465Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 7466 7467New files: tbfind.c 7468 7469Example Code and Data Size: These are the sizes for the OS-independent 7470acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7471debug version of the code includes the debug output trace mechanism and 7472has 7473a much larger code and data size. 7474 7475 Previous Release: 7476 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7477 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7478 Current Release: 7479 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7480 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7481 7482 74832) iASL Compiler/Disassembler and Tools: 7484 7485No changes for this release. 7486 7487---------------------------------------- 748821 July 2006. Summary of changes for version 20060721: 7489 74901) ACPI CA Core Subsystem: 7491 7492The full source code for the ASL test suite used to validate the iASL 7493compiler and the ACPICA core subsystem is being released with the ACPICA 7494source for the first time. The source is contained in a separate package 7495and 7496consists of over 1100 files that exercise all ASL/AML operators. The 7497package 7498should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 7499Fiodor 7500Suietov) 7501 7502Completed a new design and implementation for support of the ACPI Global 7503Lock. On the OS side, the global lock is now treated as a standard AML 7504mutex. Previously, multiple OS threads could "acquire" the global lock 7505simultaneously. However, this could cause the BIOS to be starved out of 7506the 7507lock - especially in cases such as the Embedded Controller driver where 7508there is a tight coupling between the OS and the BIOS. 7509 7510Implemented an optimization for the ACPI Global Lock interrupt mechanism. 7511The Global Lock interrupt handler no longer queues the execution of a 7512separate thread to signal the global lock semaphore. Instead, the 7513semaphore 7514is signaled directly from the interrupt handler. 7515 7516Implemented support within the AML interpreter for package objects that 7517contain a larger AML length (package list length) than the package 7518element 7519count. In this case, the length of the package is truncated to match the 7520package element count. Some BIOS code apparently modifies the package 7521length 7522on the fly, and this change supports this behavior. Provides 7523compatibility 7524with the MS AML interpreter. (With assistance from Fiodor Suietov) 7525 7526Implemented a temporary fix for the BankValue parameter of a Bank Field 7527to 7528support all constant values, now including the Zero and One opcodes. 7529Evaluation of this parameter must eventually be converted to a full 7530TermArg 7531evaluation. A not-implemented error is now returned (temporarily) for 7532non- 7533constant values for this parameter. 7534 7535Fixed problem reports (Fiodor Suietov) integrated: 7536- Fix for premature object deletion after CopyObject on Operation Region 7537(BZ 7538350) 7539 7540Example Code and Data Size: These are the sizes for the OS-independent 7541acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7542debug version of the code includes the debug output trace mechanism and 7543has 7544a much larger code and data size. 7545 7546 Previous Release: 7547 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 7548 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 7549 Current Release: 7550 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7551 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7552 7553 75542) iASL Compiler/Disassembler and Tools: 7555 7556No changes for this release. 7557 7558---------------------------------------- 755907 July 2006. Summary of changes for version 20060707: 7560 75611) ACPI CA Core Subsystem: 7562 7563Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 7564that do not allow the initialization of address pointers within packed 7565structures - even though the hardware itself may support misaligned 7566transfers. Some of the debug data structures are packed by default to 7567minimize size. 7568 7569Added an error message for the case where AcpiOsGetThreadId() returns 7570zero. 7571A non-zero value is required by the core ACPICA code to ensure the proper 7572operation of AML mutexes and recursive control methods. 7573 7574The DSDT is now the only ACPI table that determines whether the AML 7575interpreter is in 32-bit or 64-bit mode. Not really a functional change, 7576but 7577the hooks for per-table 32/64 switching have been removed from the code. 7578A 7579clarification to the ACPI specification is forthcoming in ACPI 3.0B. 7580 7581Fixed a possible leak of an OwnerID in the error path of 7582AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 7583deletion to a single place in AcpiTbUninstallTable to correct possible 7584leaks 7585when using the AcpiTbDeleteTablesByType interface (with assistance from 7586Lance Ortiz.) 7587 7588Fixed a problem with Serialized control methods where the semaphore 7589associated with the method could be over-signaled after multiple method 7590invocations. 7591 7592Fixed two issues with the locking of the internal namespace data 7593structure. 7594Both the Unload() operator and AcpiUnloadTable interface now lock the 7595namespace during the namespace deletion associated with the table unload 7596(with assistance from Linn Crosetto.) 7597 7598Fixed problem reports (Valery Podrezov) integrated: 7599- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 7600 7601Fixed problem reports (Fiodor Suietov) integrated: 7602- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 7603- On Address Space handler deletion, needless deactivation call (BZ 374) 7604- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 7605375) 7606- Possible memory leak, Notify sub-objects of Processor, Power, 7607ThermalZone 7608(BZ 376) 7609- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 7610- Minimum Length of RSDT should be validated (BZ 379) 7611- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 7612Handler (BZ (380) 7613- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 7614loaded 7615(BZ 381) 7616 7617Example Code and Data Size: These are the sizes for the OS-independent 7618acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7619debug version of the code includes the debug output trace mechanism and 7620has 7621a much larger code and data size. 7622 7623 Previous Release: 7624 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 7625 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 7626 Current Release: 7627 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7628 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7629 7630 76312) iASL Compiler/Disassembler and Tools: 7632 7633Fixed problem reports: 7634Compiler segfault when ASL contains a long (>1024) String declaration (BZ 7635436) 7636 7637---------------------------------------- 763823 June 2006. Summary of changes for version 20060623: 7639 76401) ACPI CA Core Subsystem: 7641 7642Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 7643allows the type to be customized to the host OS for improved efficiency 7644(since a spinlock is usually a very small object.) 7645 7646Implemented support for "ignored" bits in the ACPI registers. According 7647to 7648the ACPI specification, these bits should be preserved when writing the 7649registers via a read/modify/write cycle. There are 3 bits preserved in 7650this 7651manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 7652 7653Implemented the initial deployment of new OSL mutex interfaces. Since 7654some 7655host operating systems have separate mutex and semaphore objects, this 7656feature was requested. The base code now uses mutexes (and the new mutex 7657interfaces) wherever a binary semaphore was used previously. However, for 7658the current release, the mutex interfaces are defined as macros to map 7659them 7660to the existing semaphore interfaces. Therefore, no OSL changes are 7661required 7662at this time. (See acpiosxf.h) 7663 7664Fixed several problems with the support for the control method SyncLevel 7665parameter. The SyncLevel now works according to the ACPI specification 7666and 7667in concert with the Mutex SyncLevel parameter, since the current 7668SyncLevel 7669is a property of the executing thread. Mutual exclusion for control 7670methods 7671is now implemented with a mutex instead of a semaphore. 7672 7673Fixed three instances of the use of the C shift operator in the bitfield 7674support code (exfldio.c) to avoid the use of a shift value larger than 7675the 7676target data width. The behavior of C compilers is undefined in this case 7677and 7678can cause unpredictable results, and therefore the case must be detected 7679and 7680avoided. (Fiodor Suietov) 7681 7682Added an info message whenever an SSDT or OEM table is loaded dynamically 7683via the Load() or LoadTable() ASL operators. This should improve 7684debugging 7685capability since it will show exactly what tables have been loaded 7686(beyond 7687the tables present in the RSDT/XSDT.) 7688 7689Example Code and Data Size: These are the sizes for the OS-independent 7690acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7691debug version of the code includes the debug output trace mechanism and 7692has 7693a much larger code and data size. 7694 7695 Previous Release: 7696 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 7697 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 7698 Current Release: 7699 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 7700 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 7701 7702 77032) iASL Compiler/Disassembler and Tools: 7704 7705No changes for this release. 7706 7707---------------------------------------- 770808 June 2006. Summary of changes for version 20060608: 7709 77101) ACPI CA Core Subsystem: 7711 7712Converted the locking mutex used for the ACPI hardware to a spinlock. 7713This 7714change should eliminate all problems caused by attempting to acquire a 7715semaphore at interrupt level, and it means that all ACPICA external 7716interfaces that directly access the ACPI hardware can be safely called 7717from 7718interrupt level. OSL code that implements the semaphore interfaces should 7719be 7720able to eliminate any workarounds for being called at interrupt level. 7721 7722Fixed a regression introduced in 20060526 where the ACPI device 7723initialization could be prematurely aborted with an AE_NOT_FOUND if a 7724device 7725did not have an optional _INI method. 7726 7727Fixed an IndexField issue where a write to the Data Register should be 7728limited in size to the AccessSize (width) of the IndexField itself. (BZ 7729433, 7730Fiodor Suietov) 7731 7732Fixed problem reports (Valery Podrezov) integrated: 7733- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 7734 7735Fixed problem reports (Fiodor Suietov) integrated: 7736- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 7737 7738Removed four global mutexes that were obsolete and were no longer being 7739used. 7740 7741Example Code and Data Size: These are the sizes for the OS-independent 7742acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7743debug version of the code includes the debug output trace mechanism and 7744has 7745a much larger code and data size. 7746 7747 Previous Release: 7748 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 7749 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 7750 Current Release: 7751 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 7752 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 7753 7754 77552) iASL Compiler/Disassembler and Tools: 7756 7757Fixed a fault when using -g option (get tables from registry) on Windows 7758machines. 7759 7760Fixed problem reports integrated: 7761- Generate error if CreateField NumBits parameter is zero. (BZ 405) 7762- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 7763Suietov) 7764- Global table revision override (-r) is ignored (BZ 413) 7765 7766---------------------------------------- 776726 May 2006. Summary of changes for version 20060526: 7768 77691) ACPI CA Core Subsystem: 7770 7771Restructured, flattened, and simplified the internal interfaces for 7772namespace object evaluation - resulting in smaller code, less CPU stack 7773use, 7774and fewer interfaces. (With assistance from Mikhail Kouzmich) 7775 7776Fixed a problem with the CopyObject operator where the first parameter 7777was 7778not typed correctly for the parser, interpreter, compiler, and 7779disassembler. 7780Caused various errors and unexpected behavior. 7781 7782Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 7783produced incorrect results with some C compilers. Since the behavior of C 7784compilers when the shift value is larger than the datatype width is 7785apparently not well defined, the interpreter now detects this condition 7786and 7787simply returns zero as expected in all such cases. (BZ 395) 7788 7789Fixed problem reports (Valery Podrezov) integrated: 7790- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 7791- Allow interpreter to handle nested method declarations (BZ 5361) 7792 7793Fixed problem reports (Fiodor Suietov) integrated: 7794- AcpiTerminate doesn't free debug memory allocation list objects (BZ 7795355) 7796- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 7797356) 7798- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 7799- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 7800- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 7801- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 7802- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 7803- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 7804- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 7805365) 7806- Status of the Global Initialization Handler call not used (BZ 366) 7807- Incorrect object parameter to Global Initialization Handler (BZ 367) 7808 7809Example Code and Data Size: These are the sizes for the OS-independent 7810acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7811debug version of the code includes the debug output trace mechanism and 7812has 7813a much larger code and data size. 7814 7815 Previous Release: 7816 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 7817 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 7818 Current Release: 7819 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 7820 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 7821 7822 78232) iASL Compiler/Disassembler and Tools: 7824 7825Modified the parser to allow the names IO, DMA, and IRQ to be used as 7826namespace identifiers with no collision with existing resource descriptor 7827macro names. This provides compatibility with other ASL compilers and is 7828most useful for disassembly/recompilation of existing tables without 7829parse 7830errors. (With assistance from Thomas Renninger) 7831 7832Disassembler: fixed an incorrect disassembly problem with the 7833DataTableRegion and CopyObject operators. Fixed a possible fault during 7834disassembly of some Alias operators. 7835 7836---------------------------------------- 783712 May 2006. Summary of changes for version 20060512: 7838 78391) ACPI CA Core Subsystem: 7840 7841Replaced the AcpiOsQueueForExecution interface with a new interface named 7842AcpiOsExecute. The major difference is that the new interface does not 7843have 7844a Priority parameter, this appeared to be useless and has been replaced 7845by 7846a 7847Type parameter. The Type tells the host what type of execution is being 7848requested, such as global lock handler, notify handler, GPE handler, etc. 7849This allows the host to queue and execute the request as appropriate for 7850the 7851request type, possibly using different work queues and different 7852priorities 7853for the various request types. This enables fixes for multithreading 7854deadlock problems such as BZ #5534, and will require changes to all 7855existing 7856OS interface layers. (Alexey Starikovskiy and Bob Moore) 7857 7858Fixed a possible memory leak associated with the support for the so- 7859called 7860"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 7861Suietov) 7862 7863Fixed a problem with the Load() operator where a table load from an 7864operation region could overwrite an internal table buffer by up to 7 7865bytes 7866and cause alignment faults on IPF systems. (With assistance from Luming 7867Yu) 7868 7869Example Code and Data Size: These are the sizes for the OS-independent 7870acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7871debug version of the code includes the debug output trace mechanism and 7872has 7873a much larger code and data size. 7874 7875 Previous Release: 7876 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 7877 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 7878 Current Release: 7879 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 7880 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 7881 7882 7883 78842) iASL Compiler/Disassembler and Tools: 7885 7886Disassembler: Implemented support to cross reference the internal 7887namespace 7888and automatically generate ASL External() statements for symbols not 7889defined 7890within the current table being disassembled. This will simplify the 7891disassembly and recompilation of interdependent tables such as SSDTs 7892since 7893these statements will no longer have to be added manually. 7894 7895Disassembler: Implemented experimental support to automatically detect 7896invocations of external control methods and generate appropriate 7897External() 7898statements. This is problematic because the AML cannot be correctly 7899parsed 7900until the number of arguments for each control method is known. 7901Currently, 7902standalone method invocations and invocations as the source operand of a 7903Store() statement are supported. 7904 7905Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 7906LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 7907LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 7908more readable and likely closer to the original ASL source. 7909 7910---------------------------------------- 791121 April 2006. Summary of changes for version 20060421: 7912 79131) ACPI CA Core Subsystem: 7914 7915Removed a device initialization optimization introduced in 20051216 where 7916the _STA method was not run unless an _INI was also present for the same 7917device. This optimization could cause problems because it could allow 7918_INI 7919methods to be run within a not-present device subtree. (If a not-present 7920device had no _INI, _STA would not be run, the not-present status would 7921not 7922be discovered, and the children of the device would be incorrectly 7923traversed.) 7924 7925Implemented a new _STA optimization where namespace subtrees that do not 7926contain _INI are identified and ignored during device initialization. 7927Selectively running _STA can significantly improve boot time on large 7928machines (with assistance from Len Brown.) 7929 7930Implemented support for the device initialization case where the returned 7931_STA flags indicate a device not-present but functioning. In this case, 7932_INI 7933is not run, but the device children are examined for presence, as per the 7934ACPI specification. 7935 7936Implemented an additional change to the IndexField support in order to 7937conform to MS behavior. The value written to the Index Register is not 7938simply a byte offset, it is a byte offset in units of the access width of 7939the parent Index Field. (Fiodor Suietov) 7940 7941Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 7942interface is called during the creation of all AML operation regions, and 7943allows the host OS to exert control over what addresses it will allow the 7944AML code to access. Operation Regions whose addresses are disallowed will 7945cause a runtime exception when they are actually accessed (will not 7946affect 7947or abort table loading.) See oswinxf or osunixxf for an example 7948implementation. 7949 7950Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 7951interface allows the host OS to match the various "optional" 7952interface/behavior strings for the _OSI predefined control method as 7953appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 7954for an example implementation. 7955 7956Restructured and corrected various problems in the exception handling 7957code 7958paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 7959(with assistance from Takayoshi Kochi.) 7960 7961Modified the Linux source converter to ignore quoted string literals 7962while 7963converting identifiers from mixed to lower case. This will correct 7964problems 7965with the disassembler and other areas where such strings must not be 7966modified. 7967 7968The ACPI_FUNCTION_* macros no longer require quotes around the function 7969name. This allows the Linux source converter to convert the names, now 7970that 7971the converter ignores quoted strings. 7972 7973Example Code and Data Size: These are the sizes for the OS-independent 7974acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7975debug version of the code includes the debug output trace mechanism and 7976has 7977a much larger code and data size. 7978 7979 Previous Release: 7980 7981 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 7982 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 7983 Current Release: 7984 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 7985 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 7986 7987 79882) iASL Compiler/Disassembler and Tools: 7989 7990Implemented 3 new warnings for iASL, and implemented multiple warning 7991levels 7992(w2 flag). 7993 79941) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 7995not 7996WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 7997check for the possible timeout, a warning is issued. 7998 79992) Useless operators: If an ASL operator does not specify an optional 8000target 8001operand and it also does not use the function return value from the 8002operator, a warning is issued since the operator effectively does 8003nothing. 8004 80053) Unreferenced objects: If a namespace object is created, but never 8006referenced, a warning is issued. This is a warning level 2 since there 8007are 8008cases where this is ok, such as when a secondary table is loaded that 8009uses 8010the unreferenced objects. Even so, care is taken to only flag objects 8011that 8012don't look like they will ever be used. For example, the reserved methods 8013(starting with an underscore) are usually not referenced because it is 8014expected that the OS will invoke them. 8015 8016---------------------------------------- 801731 March 2006. Summary of changes for version 20060331: 8018 80191) ACPI CA Core Subsystem: 8020 8021Implemented header file support for the following additional ACPI tables: 8022ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 8023support, 8024all current and known ACPI tables are now defined in the ACPICA headers 8025and 8026are available for use by device drivers and other software. 8027 8028Implemented support to allow tables that contain ACPI names with invalid 8029characters to be loaded. Previously, this would cause the table load to 8030fail, but since there are several known cases of such tables on existing 8031machines, this change was made to enable ACPI support for them. Also, 8032this 8033matches the behavior of the Microsoft ACPI implementation. 8034 8035Fixed a couple regressions introduced during the memory optimization in 8036the 803720060317 release. The namespace node definition required additional 8038reorganization and an internal datatype that had been changed to 8-bit 8039was 8040restored to 32-bit. (Valery Podrezov) 8041 8042Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 8043could be passed through to AcpiOsReleaseObject which is unexpected. Such 8044null pointers are now trapped and ignored, matching the behavior of the 8045previous implementation before the deployment of AcpiOsReleaseObject. 8046(Valery Podrezov, Fiodor Suietov) 8047 8048Fixed a memory mapping leak during the deletion of a SystemMemory 8049operation 8050region where a cached memory mapping was not deleted. This became a 8051noticeable problem for operation regions that are defined within 8052frequently 8053used control methods. (Dana Meyers) 8054 8055Reorganized the ACPI table header files into two main files: one for the 8056ACPI tables consumed by the ACPICA core, and another for the 8057miscellaneous 8058ACPI tables that are consumed by the drivers and other software. The 8059various 8060FADT definitions were merged into one common section and three different 8061tables (ACPI 1.0, 1.0+, and 2.0) 8062 8063Example Code and Data Size: These are the sizes for the OS-independent 8064acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8065debug version of the code includes the debug output trace mechanism and 8066has 8067a much larger code and data size. 8068 8069 Previous Release: 8070 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8071 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8072 Current Release: 8073 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8074 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8075 8076 80772) iASL Compiler/Disassembler and Tools: 8078 8079Disassembler: Implemented support to decode and format all non-AML ACPI 8080tables (tables other than DSDTs and SSDTs.) This includes the new tables 8081added to the ACPICA headers, therefore all current and known ACPI tables 8082are 8083supported. 8084 8085Disassembler: The change to allow ACPI names with invalid characters also 8086enables the disassembly of such tables. Invalid characters within names 8087are 8088changed to '*' to make the name printable; the iASL compiler will still 8089generate an error for such names, however, since this is an invalid ACPI 8090character. 8091 8092Implemented an option for AcpiXtract (-a) to extract all tables found in 8093the 8094input file. The default invocation extracts only the DSDTs and SSDTs. 8095 8096Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 8097makefile for the AcpiXtract utility. 8098 8099---------------------------------------- 810017 March 2006. Summary of changes for version 20060317: 8101 81021) ACPI CA Core Subsystem: 8103 8104Implemented the use of a cache object for all internal namespace nodes. 8105Since there are about 1000 static nodes in a typical system, this will 8106decrease memory use for cache implementations that minimize per- 8107allocation 8108overhead (such as a slab allocator.) 8109 8110Removed the reference count mechanism for internal namespace nodes, since 8111it 8112was deemed unnecessary. This reduces the size of each namespace node by 8113about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 8114case, 8115and 32 bytes for the 64-bit case. 8116 8117Optimized several internal data structures to reduce object size on 64- 8118bit 8119platforms by packing data within the 64-bit alignment. This includes the 8120frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 8121instances corresponding to the namespace objects. 8122 8123Added two new strings for the predefined _OSI method: "Windows 2001.1 8124SP1" 8125and "Windows 2006". 8126 8127Split the allocation tracking mechanism out to a separate file, from 8128utalloc.c to uttrack.c. This mechanism appears to be only useful for 8129application-level code. Kernels may wish to not include uttrack.c in 8130distributions. 8131 8132Removed all remnants of the obsolete ACPI_REPORT_* macros and the 8133associated 8134code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 8135macros.) 8136 8137Code and Data Size: These are the sizes for the acpica.lib produced by 8138the 8139Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8140ACPI 8141driver or OSPM code. The debug version of the code includes the debug 8142output 8143trace mechanism and has a much larger code and data size. Note that these 8144values will vary depending on the efficiency of the compiler and the 8145compiler options used during generation. 8146 8147 Previous Release: 8148 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8149 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8150 Current Release: 8151 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8152 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8153 8154 81552) iASL Compiler/Disassembler and Tools: 8156 8157Implemented an ANSI C version of the acpixtract utility. This version 8158will 8159automatically extract the DSDT and all SSDTs from the input acpidump text 8160file and dump the binary output to separate files. It can also display a 8161summary of the input file including the headers for each table found and 8162will extract any single ACPI table, with any signature. (See 8163source/tools/acpixtract) 8164 8165---------------------------------------- 816610 March 2006. Summary of changes for version 20060310: 8167 81681) ACPI CA Core Subsystem: 8169 8170Tagged all external interfaces to the subsystem with the new 8171ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 8172assist 8173kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 8174macro. The default definition is NULL. 8175 8176Added the ACPI_THREAD_ID type for the return value from 8177AcpiOsGetThreadId. 8178This allows the host to define this as necessary to simplify kernel 8179integration. The default definition is ACPI_NATIVE_UINT. 8180 8181Fixed two interpreter problems related to error processing, the deletion 8182of 8183objects, and placing invalid pointers onto the internal operator result 8184stack. BZ 6028, 6151 (Valery Podrezov) 8185 8186Increased the reference count threshold where a warning is emitted for 8187large 8188reference counts in order to eliminate unnecessary warnings on systems 8189with 8190large namespaces (especially 64-bit.) Increased the value from 0x400 to 81910x800. 8192 8193Due to universal disagreement as to the meaning of the 'c' in the 8194calloc() 8195function, the ACPI_MEM_CALLOCATE macro has been renamed to 8196ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 8197ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 8198ACPI_FREE. 8199 8200Code and Data Size: These are the sizes for the acpica.lib produced by 8201the 8202Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8203ACPI 8204driver or OSPM code. The debug version of the code includes the debug 8205output 8206trace mechanism and has a much larger code and data size. Note that these 8207values will vary depending on the efficiency of the compiler and the 8208compiler options used during generation. 8209 8210 Previous Release: 8211 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8212 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8213 Current Release: 8214 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8215 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8216 8217 82182) iASL Compiler/Disassembler: 8219 8220Disassembler: implemented support for symbolic resource descriptor 8221references. If a CreateXxxxField operator references a fixed offset 8222within 8223a 8224resource descriptor, a name is assigned to the descriptor and the offset 8225is 8226translated to the appropriate resource tag and pathname. The addition of 8227this support brings the disassembled code very close to the original ASL 8228source code and helps eliminate run-time errors when the disassembled 8229code 8230is modified (and recompiled) in such a way as to invalidate the original 8231fixed offsets. 8232 8233Implemented support for a Descriptor Name as the last parameter to the 8234ASL 8235Register() macro. This parameter was inadvertently left out of the ACPI 8236specification, and will be added for ACPI 3.0b. 8237 8238Fixed a problem where the use of the "_OSI" string (versus the full path 8239"\_OSI") caused an internal compiler error. ("No back ptr to op") 8240 8241Fixed a problem with the error message that occurs when an invalid string 8242is 8243used for a _HID object (such as one with an embedded asterisk: 8244"*PNP010A".) 8245The correct message is now displayed. 8246 8247---------------------------------------- 824817 February 2006. Summary of changes for version 20060217: 8249 82501) ACPI CA Core Subsystem: 8251 8252Implemented a change to the IndexField support to match the behavior of 8253the 8254Microsoft AML interpreter. The value written to the Index register is now 8255a 8256byte offset, no longer an index based upon the width of the Data 8257register. 8258This should fix IndexField problems seen on some machines where the Data 8259register is not exactly one byte wide. The ACPI specification will be 8260clarified on this point. 8261 8262Fixed a problem where several resource descriptor types could overrun the 8263internal descriptor buffer due to size miscalculation: VendorShort, 8264VendorLong, and Interrupt. This was noticed on IA64 machines, but could 8265affect all platforms. 8266 8267Fixed a problem where individual resource descriptors were misaligned 8268within 8269the internal buffer, causing alignment faults on IA64 platforms. 8270 8271Code and Data Size: These are the sizes for the acpica.lib produced by 8272the 8273Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8274ACPI 8275driver or OSPM code. The debug version of the code includes the debug 8276output 8277trace mechanism and has a much larger code and data size. Note that these 8278values will vary depending on the efficiency of the compiler and the 8279compiler options used during generation. 8280 8281 Previous Release: 8282 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8283 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8284 Current Release: 8285 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8286 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8287 8288 82892) iASL Compiler/Disassembler: 8290 8291Implemented support for new reserved names: _WDG and _WED are Microsoft 8292extensions for Windows Instrumentation Management, _TDL is a new ACPI- 8293defined method (Throttling Depth Limit.) 8294 8295Fixed a problem where a zero-length VendorShort or VendorLong resource 8296descriptor was incorrectly emitted as a descriptor of length one. 8297 8298---------------------------------------- 829910 February 2006. Summary of changes for version 20060210: 8300 83011) ACPI CA Core Subsystem: 8302 8303Removed a couple of extraneous ACPI_ERROR messages that appeared during 8304normal execution. These became apparent after the conversion from 8305ACPI_DEBUG_PRINT. 8306 8307Fixed a problem where the CreateField operator could hang if the BitIndex 8308or 8309NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 8310 8311Fixed a problem where a DeRefOf operation on a buffer object incorrectly 8312failed with an exception. This also fixes a couple of related RefOf and 8313DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 8314 8315Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 8316of 8317AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 8318BZ 83195480) 8320 8321Implemented a memory cleanup at the end of the execution of each 8322iteration 8323of an AML While() loop, preventing the accumulation of outstanding 8324objects. 8325(Valery Podrezov, BZ 5427) 8326 8327Eliminated a chunk of duplicate code in the object resolution code. 8328(Valery 8329Podrezov, BZ 5336) 8330 8331Fixed several warnings during the 64-bit code generation. 8332 8333The AcpiSrc source code conversion tool now inserts one line of 8334whitespace 8335after an if() statement that is followed immediately by a comment, 8336improving 8337readability of the Linux code. 8338 8339Code and Data Size: The current and previous library sizes for the core 8340subsystem are shown below. These are the code and data sizes for the 8341acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8342These 8343values do not include any ACPI driver or OSPM code. The debug version of 8344the 8345code includes the debug output trace mechanism and has a much larger code 8346and data size. Note that these values will vary depending on the 8347efficiency 8348of the compiler and the compiler options used during generation. 8349 8350 Previous Release: 8351 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8352 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8353 Current Release: 8354 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8355 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8356 8357 83582) iASL Compiler/Disassembler: 8359 8360Fixed a problem with the disassembly of a BankField operator with a 8361complex 8362expression for the BankValue parameter. 8363 8364---------------------------------------- 836527 January 2006. Summary of changes for version 20060127: 8366 83671) ACPI CA Core Subsystem: 8368 8369Implemented support in the Resource Manager to allow unresolved 8370namestring 8371references within resource package objects for the _PRT method. This 8372support 8373is in addition to the previously implemented unresolved reference support 8374within the AML parser. If the interpreter slack mode is enabled, these 8375unresolved references will be passed through to the caller as a NULL 8376package 8377entry. 8378 8379Implemented and deployed new macros and functions for error and warning 8380messages across the subsystem. These macros are simpler and generate less 8381code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 8382ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 8383macros remain defined to allow ACPI drivers time to migrate to the new 8384macros. 8385 8386Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 8387the 8388Acquire/Release Lock OSL interfaces. 8389 8390Fixed a problem where Alias ASL operators are sometimes not correctly 8391resolved, in both the interpreter and the iASL compiler. 8392 8393Fixed several problems with the implementation of the 8394ConcatenateResTemplate 8395ASL operator. As per the ACPI specification, zero length buffers are now 8396treated as a single EndTag. One-length buffers always cause a fatal 8397exception. Non-zero length buffers that do not end with a full 2-byte 8398EndTag 8399cause a fatal exception. 8400 8401Fixed a possible structure overwrite in the AcpiGetObjectInfo external 8402interface. (With assistance from Thomas Renninger) 8403 8404Code and Data Size: The current and previous library sizes for the core 8405subsystem are shown below. These are the code and data sizes for the 8406acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8407These 8408values do not include any ACPI driver or OSPM code. The debug version of 8409the 8410code includes the debug output trace mechanism and has a much larger code 8411and data size. Note that these values will vary depending on the 8412efficiency 8413of the compiler and the compiler options used during generation. 8414 8415 Previous Release: 8416 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8417 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8418 Current Release: 8419 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8420 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8421 8422 84232) iASL Compiler/Disassembler: 8424 8425Fixed an internal error that was generated for any forward references to 8426ASL 8427Alias objects. 8428 8429---------------------------------------- 843013 January 2006. Summary of changes for version 20060113: 8431 84321) ACPI CA Core Subsystem: 8433 8434Added 2006 copyright to all module headers and signons. This affects 8435virtually every file in the ACPICA core subsystem, iASL compiler, and the 8436utilities. 8437 8438Enhanced the ACPICA error reporting in order to simplify user migration 8439to 8440the non-debug version of ACPICA. Replaced all instances of the 8441ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 8442debug 8443levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 8444respectively. This preserves all error and warning messages in the non- 8445debug 8446version of the ACPICA code (this has been referred to as the "debug lite" 8447option.) Over 200 cases were converted to create a total of over 380 8448error/warning messages across the ACPICA code. This increases the code 8449and 8450data size of the default non-debug version of the code somewhat (about 845113K), 8452but all error/warning reporting may be disabled if desired (and code 8453eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 8454configuration option. The size of the debug version of ACPICA remains 8455about 8456the same. 8457 8458Fixed a memory leak within the AML Debugger "Set" command. One object was 8459not properly deleted for every successful invocation of the command. 8460 8461Code and Data Size: The current and previous library sizes for the core 8462subsystem are shown below. These are the code and data sizes for the 8463acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8464These 8465values do not include any ACPI driver or OSPM code. The debug version of 8466the 8467code includes the debug output trace mechanism and has a much larger code 8468and data size. Note that these values will vary depending on the 8469efficiency 8470of the compiler and the compiler options used during generation. 8471 8472 Previous Release: 8473 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8474 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8475 Current Release: 8476 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8477 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8478 8479 84802) iASL Compiler/Disassembler: 8481 8482The compiler now officially supports the ACPI 3.0a specification that was 8483released on December 30, 2005. (Specification is available at 8484www.acpi.info) 8485 8486---------------------------------------- 848716 December 2005. Summary of changes for version 20051216: 8488 84891) ACPI CA Core Subsystem: 8490 8491Implemented optional support to allow unresolved names within ASL Package 8492objects. A null object is inserted in the package when a named reference 8493cannot be located in the current namespace. Enabled via the interpreter 8494slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 8495machines 8496that contain such code. 8497 8498Implemented an optimization to the initialization sequence that can 8499improve 8500boot time. During ACPI device initialization, the _STA method is now run 8501if 8502and only if the _INI method exists. The _STA method is used to determine 8503if 8504the device is present; An _INI can only be run if _STA returns present, 8505but 8506it is a waste of time to run the _STA method if the _INI does not exist. 8507(Prototype and assistance from Dong Wei) 8508 8509Implemented use of the C99 uintptr_t for the pointer casting macros if it 8510is 8511available in the current compiler. Otherwise, the default (void *) cast 8512is 8513used as before. 8514 8515Fixed some possible memory leaks found within the execution path of the 8516Break, Continue, If, and CreateField operators. (Valery Podrezov) 8517 8518Fixed a problem introduced in the 20051202 release where an exception is 8519generated during method execution if a control method attempts to declare 8520another method. 8521 8522Moved resource descriptor string constants that are used by both the AML 8523disassembler and AML debugger to the common utilities directory so that 8524these components are independent. 8525 8526Implemented support in the AcpiExec utility (-e switch) to globally 8527ignore 8528exceptions during control method execution (method is not aborted.) 8529 8530Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 8531generation. 8532 8533Code and Data Size: The current and previous library sizes for the core 8534subsystem are shown below. These are the code and data sizes for the 8535acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8536These 8537values do not include any ACPI driver or OSPM code. The debug version of 8538the 8539code includes the debug output trace mechanism and has a much larger code 8540and data size. Note that these values will vary depending on the 8541efficiency 8542of the compiler and the compiler options used during generation. 8543 8544 Previous Release: 8545 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8546 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8547 Current Release: 8548 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8549 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8550 8551 85522) iASL Compiler/Disassembler: 8553 8554Fixed a problem where a CPU stack overflow fault could occur if a 8555recursive 8556method call was made from within a Return statement. 8557 8558---------------------------------------- 855902 December 2005. Summary of changes for version 20051202: 8560 85611) ACPI CA Core Subsystem: 8562 8563Modified the parsing of control methods to no longer create namespace 8564objects during the first pass of the parse. Objects are now created only 8565during the execute phase, at the moment the namespace creation operator 8566is 8567encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 8568This 8569should eliminate ALREADY_EXISTS exceptions seen on some machines where 8570reentrant control methods are protected by an AML mutex. The mutex will 8571now 8572correctly block multiple threads from attempting to create the same 8573object 8574more than once. 8575 8576Increased the number of available Owner Ids for namespace object tracking 8577from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 8578on 8579some machines with a large number of ACPI tables (either static or 8580dynamic). 8581 8582Fixed a problem with the AcpiExec utility where a fault could occur when 8583the 8584-b switch (batch mode) is used. 8585 8586Enhanced the namespace dump routine to output the owner ID for each 8587namespace object. 8588 8589Code and Data Size: The current and previous library sizes for the core 8590subsystem are shown below. These are the code and data sizes for the 8591acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8592These 8593values do not include any ACPI driver or OSPM code. The debug version of 8594the 8595code includes the debug output trace mechanism and has a much larger code 8596and data size. Note that these values will vary depending on the 8597efficiency 8598of the compiler and the compiler options used during generation. 8599 8600 Previous Release: 8601 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8602 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8603 Current Release: 8604 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8605 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8606 8607 86082) iASL Compiler/Disassembler: 8609 8610Fixed a parse error during compilation of certain Switch/Case constructs. 8611To 8612simplify the parse, the grammar now allows for multiple Default 8613statements 8614and this error is now detected and flagged during the analysis phase. 8615 8616Disassembler: The disassembly now includes the contents of the original 8617table header within a comment at the start of the file. This includes the 8618name and version of the original ASL compiler. 8619 8620---------------------------------------- 862117 November 2005. Summary of changes for version 20051117: 8622 86231) ACPI CA Core Subsystem: 8624 8625Fixed a problem in the AML parser where the method thread count could be 8626decremented below zero if any errors occurred during the method parse 8627phase. 8628This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 8629machines. 8630This also fixed a related regression with the mechanism that detects and 8631corrects methods that cannot properly handle reentrancy (related to the 8632deployment of the new OwnerId mechanism.) 8633 8634Eliminated the pre-parsing of control methods (to detect errors) during 8635table load. Related to the problem above, this was causing unwind issues 8636if 8637any errors occurred during the parse, and it seemed to be overkill. A 8638table 8639load should not be aborted if there are problems with any single control 8640method, thus rendering this feature rather pointless. 8641 8642Fixed a problem with the new table-driven resource manager where an 8643internal 8644buffer overflow could occur for small resource templates. 8645 8646Implemented a new external interface, AcpiGetVendorResource. This 8647interface 8648will find and return a vendor-defined resource descriptor within a _CRS 8649or 8650_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 8651Helgaas. 8652 8653Removed the length limit (200) on string objects as per the upcoming ACPI 86543.0A specification. This affects the following areas of the interpreter: 86551) 8656any implicit conversion of a Buffer to a String, 2) a String object 8657result 8658of the ASL Concatentate operator, 3) the String object result of the ASL 8659ToString operator. 8660 8661Fixed a problem in the Windows OS interface layer (OSL) where a 8662WAIT_FOREVER 8663on a semaphore object would incorrectly timeout. This allows the 8664multithreading features of the AcpiExec utility to work properly under 8665Windows. 8666 8667Updated the Linux makefiles for the iASL compiler and AcpiExec to include 8668the recently added file named "utresrc.c". 8669 8670Code and Data Size: The current and previous library sizes for the core 8671subsystem are shown below. These are the code and data sizes for the 8672acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8673These 8674values do not include any ACPI driver or OSPM code. The debug version of 8675the 8676code includes the debug output trace mechanism and has a much larger code 8677and data size. Note that these values will vary depending on the 8678efficiency 8679of the compiler and the compiler options used during generation. 8680 8681 Previous Release: 8682 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 8683 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8684 Current Release: 8685 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8686 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8687 8688 86892) iASL Compiler/Disassembler: 8690 8691Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 8692specification. For the iASL compiler, this means that string literals 8693within 8694the source ASL can be of any length. 8695 8696Enhanced the listing output to dump the AML code for resource descriptors 8697immediately after the ASL code for each descriptor, instead of in a block 8698at 8699the end of the entire resource template. 8700 8701Enhanced the compiler debug output to dump the entire original parse tree 8702constructed during the parse phase, before any transforms are applied to 8703the 8704tree. The transformed tree is dumped also. 8705 8706---------------------------------------- 870702 November 2005. Summary of changes for version 20051102: 8708 87091) ACPI CA Core Subsystem: 8710 8711Modified the subsystem initialization sequence to improve GPE support. 8712The 8713GPE initialization has been split into two parts in order to defer 8714execution 8715of the _PRW methods (Power Resources for Wake) until after the hardware 8716is 8717fully initialized and the SCI handler is installed. This allows the _PRW 8718methods to access fields protected by the Global Lock. This will fix 8719systems 8720where a NO_GLOBAL_LOCK exception has been seen during initialization. 8721 8722Converted the ACPI internal object disassemble and display code within 8723the 8724AML debugger to fully table-driven operation, reducing code size and 8725increasing maintainability. 8726 8727Fixed a regression with the ConcatenateResTemplate() ASL operator 8728introduced 8729in the 20051021 release. 8730 8731Implemented support for "local" internal ACPI object types within the 8732debugger "Object" command and the AcpiWalkNamespace external interfaces. 8733These local types include RegionFields, BankFields, IndexFields, Alias, 8734and 8735reference objects. 8736 8737Moved common AML resource handling code into a new file, "utresrc.c". 8738This 8739code is shared by both the Resource Manager and the AML Debugger. 8740 8741Code and Data Size: The current and previous library sizes for the core 8742subsystem are shown below. These are the code and data sizes for the 8743acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8744These 8745values do not include any ACPI driver or OSPM code. The debug version of 8746the 8747code includes the debug output trace mechanism and has a much larger code 8748and data size. Note that these values will vary depending on the 8749efficiency 8750of the compiler and the compiler options used during generation. 8751 8752 Previous Release: 8753 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 8754 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 8755 Current Release: 8756 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 8757 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8758 8759 87602) iASL Compiler/Disassembler: 8761 8762Fixed a problem with very large initializer lists (more than 4000 8763elements) 8764for both Buffer and Package objects where the parse stack could overflow. 8765 8766Enhanced the pre-compile source code scan for non-ASCII characters to 8767ignore 8768characters within comment fields. The scan is now always performed and is 8769no 8770longer optional, detecting invalid characters within a source file 8771immediately rather than during the parse phase or later. 8772 8773Enhanced the ASL grammar definition to force early reductions on all 8774list- 8775style grammar elements so that the overall parse stack usage is greatly 8776reduced. This should improve performance and reduce the possibility of 8777parse 8778stack overflow. 8779 8780Eliminated all reduce/reduce conflicts in the iASL parser generation. 8781Also, 8782with the addition of a %expected statement, the compiler generates from 8783source with no warnings. 8784 8785Fixed a possible segment fault in the disassembler if the input filename 8786does not contain a "dot" extension (Thomas Renninger). 8787 8788---------------------------------------- 878921 October 2005. Summary of changes for version 20051021: 8790 87911) ACPI CA Core Subsystem: 8792 8793Implemented support for the EM64T and other x86-64 processors. This 8794essentially entails recognizing that these processors support non-aligned 8795memory transfers. Previously, all 64-bit processors were assumed to lack 8796hardware support for non-aligned transfers. 8797 8798Completed conversion of the Resource Manager to nearly full table-driven 8799operation. Specifically, the resource conversion code (convert AML to 8800internal format and the reverse) and the debug code to dump internal 8801resource descriptors are fully table-driven, reducing code and data size 8802and 8803improving maintainability. 8804 8805The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 8806word 8807on 64-bit processors instead of a fixed 32-bit word. (With assistance 8808from 8809Alexey Starikovskiy) 8810 8811Implemented support within the resource conversion code for the Type- 8812Specific byte within the various ACPI 3.0 *WordSpace macros. 8813 8814Fixed some issues within the resource conversion code for the type- 8815specific 8816flags for both Memory and I/O address resource descriptors. For Memory, 8817implemented support for the MTP and TTP flags. For I/O, split the TRS and 8818TTP flags into two separate fields. 8819 8820Code and Data Size: The current and previous library sizes for the core 8821subsystem are shown below. These are the code and data sizes for the 8822acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8823These 8824values do not include any ACPI driver or OSPM code. The debug version of 8825the 8826code includes the debug output trace mechanism and has a much larger code 8827and data size. Note that these values will vary depending on the 8828efficiency 8829of the compiler and the compiler options used during generation. 8830 8831 Previous Release: 8832 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 8833 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 8834 Current Release: 8835 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 8836 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 8837 8838 8839 88402) iASL Compiler/Disassembler: 8841 8842Relaxed a compiler restriction that disallowed a ResourceIndex byte if 8843the 8844corresponding ResourceSource string was not also present in a resource 8845descriptor declaration. This restriction caused problems with existing 8846AML/ASL code that includes the Index byte without the string. When such 8847AML 8848was disassembled, it could not be compiled without modification. Further, 8849the modified code created a resource template with a different size than 8850the 8851original, breaking code that used fixed offsets into the resource 8852template 8853buffer. 8854 8855Removed a recent feature of the disassembler to ignore a lone 8856ResourceIndex 8857byte. This byte is now emitted if present so that the exact AML can be 8858reproduced when the disassembled code is recompiled. 8859 8860Improved comments and text alignment for the resource descriptor code 8861emitted by the disassembler. 8862 8863Implemented disassembler support for the ACPI 3.0 AccessSize field within 8864a 8865Register() resource descriptor. 8866 8867---------------------------------------- 886830 September 2005. Summary of changes for version 20050930: 8869 88701) ACPI CA Core Subsystem: 8871 8872Completed a major overhaul of the Resource Manager code - specifically, 8873optimizations in the area of the AML/internal resource conversion code. 8874The 8875code has been optimized to simplify and eliminate duplicated code, CPU 8876stack 8877use has been decreased by optimizing function parameters and local 8878variables, and naming conventions across the manager have been 8879standardized 8880for clarity and ease of maintenance (this includes function, parameter, 8881variable, and struct/typedef names.) The update may force changes in some 8882driver code, depending on how resources are handled by the host OS. 8883 8884All Resource Manager dispatch and information tables have been moved to a 8885single location for clarity and ease of maintenance. One new file was 8886created, named "rsinfo.c". 8887 8888The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 8889guarantee that the argument is not evaluated twice, making them less 8890prone 8891to macro side-effects. However, since there exists the possibility of 8892additional stack use if a particular compiler cannot optimize them (such 8893as 8894in the debug generation case), the original macros are optionally 8895available. 8896Note that some invocations of the return_VALUE macro may now cause size 8897mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 8898to 8899eliminate these. (From Randy Dunlap) 8900 8901Implemented a new mechanism to enable debug tracing for individual 8902control 8903methods. A new external interface, AcpiDebugTrace, is provided to enable 8904this mechanism. The intent is to allow the host OS to easily enable and 8905disable tracing for problematic control methods. This interface can be 8906easily exposed to a user or debugger interface if desired. See the file 8907psxface.c for details. 8908 8909AcpiUtCallocate will now return a valid pointer if a length of zero is 8910specified - a length of one is used and a warning is issued. This matches 8911the behavior of AcpiUtAllocate. 8912 8913Code and Data Size: The current and previous library sizes for the core 8914subsystem are shown below. These are the code and data sizes for the 8915acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8916These 8917values do not include any ACPI driver or OSPM code. The debug version of 8918the 8919code includes the debug output trace mechanism and has a much larger code 8920and data size. Note that these values will vary depending on the 8921efficiency 8922of the compiler and the compiler options used during generation. 8923 8924 Previous Release: 8925 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 8926 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 8927 Current Release: 8928 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 8929 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 8930 8931 89322) iASL Compiler/Disassembler: 8933 8934A remark is issued if the effective compile-time length of a package or 8935buffer is zero. Previously, this was a warning. 8936 8937---------------------------------------- 893816 September 2005. Summary of changes for version 20050916: 8939 89401) ACPI CA Core Subsystem: 8941 8942Fixed a problem within the Resource Manager where support for the Generic 8943Register descriptor was not fully implemented. This descriptor is now 8944fully 8945recognized, parsed, disassembled, and displayed. 8946 8947Completely restructured the Resource Manager code to utilize table-driven 8948dispatch and lookup, eliminating many of the large switch() statements. 8949This 8950reduces overall subsystem code size and code complexity. Affects the 8951resource parsing and construction, disassembly, and debug dump output. 8952 8953Cleaned up and restructured the debug dump output for all resource 8954descriptors. Improved readability of the output and reduced code size. 8955 8956Fixed a problem where changes to internal data structures caused the 8957optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 8958 8959Code and Data Size: The current and previous library sizes for the core 8960subsystem are shown below. These are the code and data sizes for the 8961acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8962These 8963values do not include any ACPI driver or OSPM code. The debug version of 8964the 8965code includes the debug output trace mechanism and has a much larger code 8966and data size. Note that these values will vary depending on the 8967efficiency 8968of the compiler and the compiler options used during generation. 8969 8970 Previous Release: 8971 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 8972 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 8973 Current Release: 8974 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 8975 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 8976 8977 89782) iASL Compiler/Disassembler: 8979 8980Updated the disassembler to automatically insert an EndDependentFn() 8981macro 8982into the ASL stream if this macro is missing in the original AML code, 8983simplifying compilation of the resulting ASL module. 8984 8985Fixed a problem in the disassembler where a disassembled ResourceSource 8986string (within a large resource descriptor) was not surrounded by quotes 8987and 8988not followed by a comma, causing errors when the resulting ASL module was 8989compiled. Also, escape sequences within a ResourceSource string are now 8990handled correctly (especially "\\") 8991 8992---------------------------------------- 899302 September 2005. Summary of changes for version 20050902: 8994 89951) ACPI CA Core Subsystem: 8996 8997Fixed a problem with the internal Owner ID allocation and deallocation 8998mechanisms for control method execution and recursive method invocation. 8999This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 9000messages seen on some systems. Recursive method invocation depth is 9001currently limited to 255. (Alexey Starikovskiy) 9002 9003Completely eliminated all vestiges of support for the "module-level 9004executable code" until this support is fully implemented and debugged. 9005This 9006should eliminate the NO_RETURN_VALUE exceptions seen during table load on 9007some systems that invoke this support. 9008 9009Fixed a problem within the resource manager code where the transaction 9010flags 9011for a 64-bit address descriptor were handled incorrectly in the type- 9012specific flag byte. 9013 9014Consolidated duplicate code within the address descriptor resource 9015manager 9016code, reducing overall subsystem code size. 9017 9018Fixed a fault when using the AML debugger "disassemble" command to 9019disassemble individual control methods. 9020 9021Removed references to the "release_current" directory within the Unix 9022release package. 9023 9024Code and Data Size: The current and previous core subsystem library sizes 9025are shown below. These are the code and data sizes for the acpica.lib 9026produced by the Microsoft Visual C++ 6.0 compiler. These values do not 9027include any ACPI driver or OSPM code. The debug version of the code 9028includes 9029the debug output trace mechanism and has a much larger code and data 9030size. 9031Note that these values will vary depending on the efficiency of the 9032compiler 9033and the compiler options used during generation. 9034 9035 Previous Release: 9036 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9037 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9038 Current Release: 9039 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9040 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9041 9042 90432) iASL Compiler/Disassembler: 9044 9045Implemented an error check for illegal duplicate values in the interrupt 9046and 9047dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 9048Interrupt(). 9049 9050Implemented error checking for the Irq() and IrqNoFlags() macros to 9051detect 9052too many values in the interrupt list (16 max) and invalid values in the 9053list (range 0 - 15) 9054 9055The maximum length string literal within an ASL file is now restricted to 9056200 characters as per the ACPI specification. 9057 9058Fixed a fault when using the -ln option (generate namespace listing). 9059 9060Implemented an error check to determine if a DescriptorName within a 9061resource descriptor has already been used within the current scope. 9062 9063---------------------------------------- 906415 August 2005. Summary of changes for version 20050815: 9065 90661) ACPI CA Core Subsystem: 9067 9068Implemented a full bytewise compare to determine if a table load request 9069is 9070attempting to load a duplicate table. The compare is performed if the 9071table 9072signatures and table lengths match. This will allow different tables with 9073the same OEM Table ID and revision to be loaded - probably against the 9074ACPI 9075specification, but discovered in the field nonetheless. 9076 9077Added the changes.txt logfile to each of the zipped release packages. 9078 9079Code and Data Size: Current and previous core subsystem library sizes are 9080shown below. These are the code and data sizes for the acpica.lib 9081produced 9082by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9083any ACPI driver or OSPM code. The debug version of the code includes the 9084debug output trace mechanism and has a much larger code and data size. 9085Note 9086that these values will vary depending on the efficiency of the compiler 9087and 9088the compiler options used during generation. 9089 9090 Previous Release: 9091 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9092 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9093 Current Release: 9094 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9095 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9096 9097 90982) iASL Compiler/Disassembler: 9099 9100Fixed a problem where incorrect AML code could be generated for Package 9101objects if optimization is disabled (via the -oa switch). 9102 9103Fixed a problem with where incorrect AML code is generated for variable- 9104length packages when the package length is not specified and the number 9105of 9106initializer values is greater than 255. 9107 9108 9109---------------------------------------- 911029 July 2005. Summary of changes for version 20050729: 9111 91121) ACPI CA Core Subsystem: 9113 9114Implemented support to ignore an attempt to install/load a particular 9115ACPI 9116table more than once. Apparently there exists BIOS code that repeatedly 9117attempts to load the same SSDT upon certain events. With assistance from 9118Venkatesh Pallipadi. 9119 9120Restructured the main interface to the AML parser in order to correctly 9121handle all exceptional conditions. This will prevent leakage of the 9122OwnerId 9123resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 9124some 9125machines. With assistance from Alexey Starikovskiy. 9126 9127Support for "module level code" has been disabled in this version due to 9128a 9129number of issues that have appeared on various machines. The support can 9130be 9131enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 9132compilation. When the issues are fully resolved, the code will be enabled 9133by 9134default again. 9135 9136Modified the internal functions for debug print support to define the 9137FunctionName parameter as a (const char *) for compatibility with 9138compiler 9139built-in macros such as __FUNCTION__, etc. 9140 9141Linted the entire ACPICA source tree for both 32-bit and 64-bit. 9142 9143Implemented support to display an object count summary for the AML 9144Debugger 9145commands Object and Methods. 9146 9147Code and Data Size: Current and previous core subsystem library sizes are 9148shown below. These are the code and data sizes for the acpica.lib 9149produced 9150by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9151any ACPI driver or OSPM code. The debug version of the code includes the 9152debug output trace mechanism and has a much larger code and data size. 9153Note 9154that these values will vary depending on the efficiency of the compiler 9155and 9156the compiler options used during generation. 9157 9158 Previous Release: 9159 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9160 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9161 Current Release: 9162 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9163 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9164 9165 91662) iASL Compiler/Disassembler: 9167 9168Fixed a regression that appeared in the 20050708 version of the compiler 9169where an error message was inadvertently emitted for invocations of the 9170_OSI 9171reserved control method. 9172 9173---------------------------------------- 917408 July 2005. Summary of changes for version 20050708: 9175 91761) ACPI CA Core Subsystem: 9177 9178The use of the CPU stack in the debug version of the subsystem has been 9179considerably reduced. Previously, a debug structure was declared in every 9180function that used the debug macros. This structure has been removed in 9181favor of declaring the individual elements as parameters to the debug 9182functions. This reduces the cumulative stack use during nested execution 9183of 9184ACPI function calls at the cost of a small increase in the code size of 9185the 9186debug version of the subsystem. With assistance from Alexey Starikovskiy 9187and 9188Len Brown. 9189 9190Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 9191headers to define a macro that will return the current function name at 9192runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 9193by 9194the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 9195compiler-dependent header, the function name is saved on the CPU stack 9196(one 9197pointer per function.) This mechanism is used because apparently there 9198exists no standard ANSI-C defined macro that that returns the function 9199name. 9200 9201Redesigned and reimplemented the "Owner ID" mechanism used to track 9202namespace objects created/deleted by ACPI tables and control method 9203execution. A bitmap is now used to allocate and free the IDs, thus 9204solving 9205the wraparound problem present in the previous implementation. The size 9206of 9207the namespace node descriptor was reduced by 2 bytes as a result (Alexey 9208Starikovskiy). 9209 9210Removed the UINT32_BIT and UINT16_BIT types that were used for the 9211bitfield 9212flag definitions within the headers for the predefined ACPI tables. These 9213have been replaced by UINT8_BIT in order to increase the code portability 9214of 9215the subsystem. If the use of UINT8 remains a problem, we may be forced to 9216eliminate bitfields entirely because of a lack of portability. 9217 9218Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 9219This 9220is a frequently used function and this improvement increases the 9221performance 9222of the entire subsystem (Alexey Starikovskiy). 9223 9224Fixed several possible memory leaks and the inverse - premature object 9225deletion (Alexey Starikovskiy). 9226 9227Code and Data Size: Current and previous core subsystem library sizes are 9228shown below. These are the code and data sizes for the acpica.lib 9229produced 9230by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9231any ACPI driver or OSPM code. The debug version of the code includes the 9232debug output trace mechanism and has a much larger code and data size. 9233Note 9234that these values will vary depending on the efficiency of the compiler 9235and 9236the compiler options used during generation. 9237 9238 Previous Release: 9239 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9240 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9241 Current Release: 9242 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9243 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9244 9245---------------------------------------- 924624 June 2005. Summary of changes for version 20050624: 9247 92481) ACPI CA Core Subsystem: 9249 9250Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 9251the host-defined cache object. This allows the OSL implementation to 9252define 9253and type this object in any manner desired, simplifying the OSL 9254implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 9255Linux, and should be defined in the OS-specific header file for other 9256operating systems as required. 9257 9258Changed the interface to AcpiOsAcquireObject to directly return the 9259requested object as the function return (instead of ACPI_STATUS.) This 9260change was made for performance reasons, since this is the purpose of the 9261interface in the first place. AcpiOsAcquireObject is now similar to the 9262AcpiOsAllocate interface. 9263 9264Implemented a new AML debugger command named Businfo. This command 9265displays 9266information about all devices that have an associate _PRT object. The 9267_ADR, 9268_HID, _UID, and _CID are displayed for these devices. 9269 9270Modified the initialization sequence in AcpiInitializeSubsystem to call 9271the 9272OSL interface AcpiOslInitialize first, before any local initialization. 9273This 9274change was required because the global initialization now calls OSL 9275interfaces. 9276 9277Enhanced the Dump command to display the entire contents of Package 9278objects 9279(including all sub-objects and their values.) 9280 9281Restructured the code base to split some files because of size and/or 9282because the code logically belonged in a separate file. New files are 9283listed 9284below. All makefiles and project files included in the ACPI CA release 9285have 9286been updated. 9287 utilities/utcache.c /* Local cache interfaces */ 9288 utilities/utmutex.c /* Local mutex support */ 9289 utilities/utstate.c /* State object support */ 9290 interpreter/parser/psloop.c /* Main AML parse loop */ 9291 9292Code and Data Size: Current and previous core subsystem library sizes are 9293shown below. These are the code and data sizes for the acpica.lib 9294produced 9295by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9296any ACPI driver or OSPM code. The debug version of the code includes the 9297debug output trace mechanism and has a much larger code and data size. 9298Note 9299that these values will vary depending on the efficiency of the compiler 9300and 9301the compiler options used during generation. 9302 9303 Previous Release: 9304 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9305 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9306 Current Release: 9307 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9308 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9309 9310 93112) iASL Compiler/Disassembler: 9312 9313Fixed a regression introduced in version 20050513 where the use of a 9314Package 9315object within a Case() statement caused a compile time exception. The 9316original behavior has been restored (a Match() operator is emitted.) 9317 9318---------------------------------------- 931917 June 2005. Summary of changes for version 20050617: 9320 93211) ACPI CA Core Subsystem: 9322 9323Moved the object cache operations into the OS interface layer (OSL) to 9324allow 9325the host OS to handle these operations if desired (for example, the Linux 9326OSL will invoke the slab allocator). This support is optional; the 9327compile 9328time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 9329cache 9330code in the ACPI CA core. The new OSL interfaces are shown below. See 9331utalloc.c for an example implementation, and acpiosxf.h for the exact 9332interface definitions. With assistance from Alexey Starikovskiy. 9333 AcpiOsCreateCache 9334 AcpiOsDeleteCache 9335 AcpiOsPurgeCache 9336 AcpiOsAcquireObject 9337 AcpiOsReleaseObject 9338 9339Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 9340return 9341and restore a flags parameter. This fits better with many OS lock models. 9342Note: the current execution state (interrupt handler or not) is no longer 9343passed to these interfaces. If necessary, the OSL must determine this 9344state 9345by itself, a simple and fast operation. With assistance from Alexey 9346Starikovskiy. 9347 9348Fixed a problem in the ACPI table handling where a valid XSDT was assumed 9349present if the revision of the RSDP was 2 or greater. According to the 9350ACPI 9351specification, the XSDT is optional in all cases, and the table manager 9352therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 9353Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 9354contain 9355only the RSDT. 9356 9357Fixed an interpreter problem with the Mid() operator in the case of an 9358input 9359string where the resulting output string is of zero length. It now 9360correctly 9361returns a valid, null terminated string object instead of a string object 9362with a null pointer. 9363 9364Fixed a problem with the control method argument handling to allow a 9365store 9366to an Arg object that already contains an object of type Device. The 9367Device 9368object is now correctly overwritten. Previously, an error was returned. 9369 9370 9371Enhanced the debugger Find command to emit object values in addition to 9372the 9373found object pathnames. The output format is the same as the dump 9374namespace 9375command. 9376 9377Enhanced the debugger Set command. It now has the ability to set the 9378value 9379of any Named integer object in the namespace (Previously, only method 9380locals 9381and args could be set.) 9382 9383Code and Data Size: Current and previous core subsystem library sizes are 9384shown below. These are the code and data sizes for the acpica.lib 9385produced 9386by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9387any ACPI driver or OSPM code. The debug version of the code includes the 9388debug output trace mechanism and has a much larger code and data size. 9389Note 9390that these values will vary depending on the efficiency of the compiler 9391and 9392the compiler options used during generation. 9393 9394 Previous Release: 9395 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9396 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9397 Current Release: 9398 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9399 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9400 9401 94022) iASL Compiler/Disassembler: 9403 9404Fixed a regression in the disassembler where if/else/while constructs 9405were 9406output incorrectly. This problem was introduced in the previous release 9407(20050526). This problem also affected the single-step disassembly in the 9408debugger. 9409 9410Fixed a problem where compiling the reserved _OSI method would randomly 9411(but 9412rarely) produce compile errors. 9413 9414Enhanced the disassembler to emit compilable code in the face of 9415incorrect 9416AML resource descriptors. If the optional ResourceSourceIndex is present, 9417but the ResourceSource is not, do not emit the ResourceSourceIndex in the 9418disassembly. Otherwise, the resulting code cannot be compiled without 9419errors. 9420 9421---------------------------------------- 942226 May 2005. Summary of changes for version 20050526: 9423 94241) ACPI CA Core Subsystem: 9425 9426Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 9427the module level (not within a control method.) These opcodes are 9428executed 9429exactly once at the time the table is loaded. This type of code was legal 9430up 9431until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 9432in 9433order to provide backwards compatibility with earlier BIOS 9434implementations. 9435This eliminates the "Encountered executable code at module level" warning 9436that was previously generated upon detection of such code. 9437 9438Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 9439inadvertently be generated during the lookup of namespace objects in the 9440second pass parse of ACPI tables and control methods. It appears that 9441this 9442problem could occur during the resolution of forward references to 9443namespace 9444objects. 9445 9446Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 9447corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 9448allows the deadlock detection debug code to be compiled out in the normal 9449case, improving mutex performance (and overall subsystem performance) 9450considerably. 9451 9452Implemented a handful of miscellaneous fixes for possible memory leaks on 9453error conditions and error handling control paths. These fixes were 9454suggested by FreeBSD and the Coverity Prevent source code analysis tool. 9455 9456Added a check for a null RSDT pointer in AcpiGetFirmwareTable 9457(tbxfroot.c) 9458to prevent a fault in this error case. 9459 9460Code and Data Size: Current and previous core subsystem library sizes are 9461shown below. These are the code and data sizes for the acpica.lib 9462produced 9463by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9464any ACPI driver or OSPM code. The debug version of the code includes the 9465debug output trace mechanism and has a much larger code and data size. 9466Note 9467that these values will vary depending on the efficiency of the compiler 9468and 9469the compiler options used during generation. 9470 9471 Previous Release: 9472 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9473 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9474 Current Release: 9475 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9476 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9477 9478 94792) iASL Compiler/Disassembler: 9480 9481Implemented support to allow Type 1 and Type 2 ASL operators to appear at 9482the module level (not within a control method.) These operators will be 9483executed once at the time the table is loaded. This type of code was 9484legal 9485up until the release of ACPI 2.0B (2002) and is now supported by the iASL 9486compiler in order to provide backwards compatibility with earlier BIOS 9487ASL 9488code. 9489 9490The ACPI integer width (specified via the table revision ID or the -r 9491override, 32 or 64 bits) is now used internally during compile-time 9492constant 9493folding to ensure that constants are truncated to 32 bits if necessary. 9494Previously, the revision ID value was only emitted in the AML table 9495header. 9496 9497An error message is now generated for the Mutex and Method operators if 9498the 9499SyncLevel parameter is outside the legal range of 0 through 15. 9500 9501Fixed a problem with the Method operator ParameterTypes list handling 9502(ACPI 95033.0). Previously, more than 2 types or 2 arguments generated a syntax 9504error. 9505The actual underlying implementation of method argument typechecking is 9506still under development, however. 9507 9508---------------------------------------- 950913 May 2005. Summary of changes for version 20050513: 9510 95111) ACPI CA Core Subsystem: 9512 9513Implemented support for PCI Express root bridges -- added support for 9514device 9515PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 9516 9517The interpreter now automatically truncates incoming 64-bit constants to 951832 9519bits if currently executing out of a 32-bit ACPI table (Revision < 2). 9520This 9521also affects the iASL compiler constant folding. (Note: as per below, the 9522iASL compiler no longer allows 64-bit constants within 32-bit tables.) 9523 9524Fixed a problem where string and buffer objects with "static" pointers 9525(pointers to initialization data within an ACPI table) were not handled 9526consistently. The internal object copy operation now always copies the 9527data 9528to a newly allocated buffer, regardless of whether the source object is 9529static or not. 9530 9531Fixed a problem with the FromBCD operator where an implicit result 9532conversion was improperly performed while storing the result to the 9533target 9534operand. Since this is an "explicit conversion" operator, the implicit 9535conversion should never be performed on the output. 9536 9537Fixed a problem with the CopyObject operator where a copy to an existing 9538named object did not always completely overwrite the existing object 9539stored 9540at name. Specifically, a buffer-to-buffer copy did not delete the 9541existing 9542buffer. 9543 9544Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 9545and 9546structs for consistency. 9547 9548Code and Data Size: Current and previous core subsystem library sizes are 9549shown below. These are the code and data sizes for the acpica.lib 9550produced 9551by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9552any ACPI driver or OSPM code. The debug version of the code includes the 9553debug output trace mechanism and has a much larger code and data size. 9554Note 9555that these values will vary depending on the efficiency of the compiler 9556and 9557the compiler options used during generation. 9558 9559 Previous Release: 9560 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9561 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9562 Current Release: (Same sizes) 9563 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9564 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9565 9566 95672) iASL Compiler/Disassembler: 9568 9569The compiler now emits a warning if an attempt is made to generate a 64- 9570bit 9571integer constant from within a 32-bit ACPI table (Revision < 2). The 9572integer 9573is truncated to 32 bits. 9574 9575Fixed a problem with large package objects: if the static length of the 9576package is greater than 255, the "variable length package" opcode is 9577emitted. Previously, this caused an error. This requires an update to the 9578ACPI spec, since it currently (incorrectly) states that packages larger 9579than 9580255 elements are not allowed. 9581 9582The disassembler now correctly handles variable length packages and 9583packages 9584larger than 255 elements. 9585 9586---------------------------------------- 958708 April 2005. Summary of changes for version 20050408: 9588 95891) ACPI CA Core Subsystem: 9590 9591Fixed three cases in the interpreter where an "index" argument to an ASL 9592function was still (internally) 32 bits instead of the required 64 bits. 9593This was the Index argument to the Index, Mid, and Match operators. 9594 9595The "strupr" function is now permanently local (AcpiUtStrupr), since this 9596is 9597not a POSIX-defined function and not present in most kernel-level C 9598libraries. All references to the C library strupr function have been 9599removed 9600from the headers. 9601 9602Completed the deployment of static functions/prototypes. All prototypes 9603with 9604the static attribute have been moved from the headers to the owning C 9605file. 9606 9607Implemented an extract option (-e) for the AcpiBin utility (AML binary 9608utility). This option allows the utility to extract individual ACPI 9609tables 9610from the output of AcpiDmp. It provides the same functionality of the 9611acpixtract.pl perl script without the worry of setting the correct perl 9612options. AcpiBin runs on Windows and has not yet been generated/validated 9613in 9614the Linux/Unix environment (but should be soon). 9615 9616Updated and fixed the table dump option for AcpiBin (-d). This option 9617converts a single ACPI table to a hex/ascii file, similar to the output 9618of 9619AcpiDmp. 9620 9621Code and Data Size: Current and previous core subsystem library sizes are 9622shown below. These are the code and data sizes for the acpica.lib 9623produced 9624by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9625any ACPI driver or OSPM code. The debug version of the code includes the 9626debug output trace mechanism and has a much larger code and data size. 9627Note 9628that these values will vary depending on the efficiency of the compiler 9629and 9630the compiler options used during generation. 9631 9632 Previous Release: 9633 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 9634 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 9635 Current Release: 9636 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9637 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9638 9639 96402) iASL Compiler/Disassembler: 9641 9642Disassembler fix: Added a check to ensure that the table length found in 9643the 9644ACPI table header within the input file is not longer than the actual 9645input 9646file size. This indicates some kind of file or table corruption. 9647 9648---------------------------------------- 964929 March 2005. Summary of changes for version 20050329: 9650 96511) ACPI CA Core Subsystem: 9652 9653An error is now generated if an attempt is made to create a Buffer Field 9654of 9655length zero (A CreateField with a length operand of zero.) 9656 9657The interpreter now issues a warning whenever executable code at the 9658module 9659level is detected during ACPI table load. This will give some idea of the 9660prevalence of this type of code. 9661 9662Implemented support for references to named objects (other than control 9663methods) within package objects. 9664 9665Enhanced package object output for the debug object. Package objects are 9666now 9667completely dumped, showing all elements. 9668 9669Enhanced miscellaneous object output for the debug object. Any object can 9670now be written to the debug object (for example, a device object can be 9671written, and the type of the object will be displayed.) 9672 9673The "static" qualifier has been added to all local functions across both 9674the 9675core subsystem and the iASL compiler. 9676 9677The number of "long" lines (> 80 chars) within the source has been 9678significantly reduced, by about 1/3. 9679 9680Cleaned up all header files to ensure that all CA/iASL functions are 9681prototyped (even static functions) and the formatting is consistent. 9682 9683Two new header files have been added, acopcode.h and acnames.h. 9684 9685Removed several obsolete functions that were no longer used. 9686 9687Code and Data Size: Current and previous core subsystem library sizes are 9688shown below. These are the code and data sizes for the acpica.lib 9689produced 9690by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9691any ACPI driver or OSPM code. The debug version of the code includes the 9692debug output trace mechanism and has a much larger code and data size. 9693Note 9694that these values will vary depending on the efficiency of the compiler 9695and 9696the compiler options used during generation. 9697 9698 Previous Release: 9699 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9700 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 9701 Current Release: 9702 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 9703 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 9704 9705 9706 97072) iASL Compiler/Disassembler: 9708 9709Fixed a problem with the resource descriptor generation/support. For the 9710ResourceSourceIndex and the ResourceSource fields, both must be present, 9711or 9712both must be not present - can't have one without the other. 9713 9714The compiler now returns non-zero from the main procedure if any errors 9715have 9716occurred during the compilation. 9717 9718 9719---------------------------------------- 972009 March 2005. Summary of changes for version 20050309: 9721 97221) ACPI CA Core Subsystem: 9723 9724The string-to-buffer implicit conversion code has been modified again 9725after 9726a change to the ACPI specification. In order to match the behavior of 9727the 9728other major ACPI implementation, the target buffer is no longer truncated 9729if 9730the source string is smaller than an existing target buffer. This change 9731requires an update to the ACPI spec, and should eliminate the recent 9732AE_AML_BUFFER_LIMIT issues. 9733 9734The "implicit return" support was rewritten to a new algorithm that 9735solves 9736the general case. Rather than attempt to determine when a method is about 9737to 9738exit, the result of every ASL operator is saved momentarily until the 9739very 9740next ASL operator is executed. Therefore, no matter how the method exits, 9741there will always be a saved implicit return value. This feature is only 9742enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 9743eliminate 9744AE_AML_NO_RETURN_VALUE errors when enabled. 9745 9746Implemented implicit conversion support for the predicate (operand) of 9747the 9748If, Else, and While operators. String and Buffer arguments are 9749automatically 9750converted to Integers. 9751 9752Changed the string-to-integer conversion behavior to match the new ACPI 9753errata: "If no integer object exists, a new integer is created. The ASCII 9754string is interpreted as a hexadecimal constant. Each string character is 9755interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 9756with the first character as the most significant digit, and ending with 9757the 9758first non-hexadecimal character or end-of-string." This means that the 9759first 9760non-hex character terminates the conversion and this is the code that was 9761changed. 9762 9763Fixed a problem where the ObjectType operator would fail (fault) when 9764used 9765on an Index of a Package which pointed to a null package element. The 9766operator now properly returns zero (Uninitialized) in this case. 9767 9768Fixed a problem where the While operator used excessive memory by not 9769properly popping the result stack during execution. There was no memory 9770leak 9771after execution, however. (Code provided by Valery Podrezov.) 9772 9773Fixed a problem where references to control methods within Package 9774objects 9775caused the method to be invoked, instead of producing a reference object 9776pointing to the method. 9777 9778Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 9779to 9780improve performance and reduce code size. (Code provided by Alexey 9781Starikovskiy.) 9782 9783Code and Data Size: Current and previous core subsystem library sizes are 9784shown below. These are the code and data sizes for the acpica.lib 9785produced 9786by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9787any ACPI driver or OSPM code. The debug version of the code includes the 9788debug output trace mechanism and has a much larger code and data size. 9789Note 9790that these values will vary depending on the efficiency of the compiler 9791and 9792the compiler options used during generation. 9793 9794 Previous Release: 9795 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9796 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 9797 Current Release: 9798 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9799 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 9800 9801 98022) iASL Compiler/Disassembler: 9803 9804Fixed a problem with the Return operator with no arguments. Since the AML 9805grammar for the byte encoding requires an operand for the Return opcode, 9806the 9807compiler now emits a Return(Zero) for this case. An ACPI specification 9808update has been written for this case. 9809 9810For tables other than the DSDT, namepath optimization is automatically 9811disabled. This is because SSDTs can be loaded anywhere in the namespace, 9812the 9813compiler has no knowledge of where, and thus cannot optimize namepaths. 9814 9815Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 9816inadvertently omitted from the ACPI specification, and will require an 9817update to the spec. 9818 9819The source file scan for ASCII characters is now optional (-a). This 9820change 9821was made because some vendors place non-ascii characters within comments. 9822However, the scan is simply a brute-force byte compare to ensure all 9823characters in the file are in the range 0x00 to 0x7F. 9824 9825Fixed a problem with the CondRefOf operator where the compiler was 9826inappropriately checking for the existence of the target. Since the point 9827of 9828the operator is to check for the existence of the target at run-time, the 9829compiler no longer checks for the target existence. 9830 9831Fixed a problem where errors generated from the internal AML interpreter 9832during constant folding were not handled properly, causing a fault. 9833 9834Fixed a problem with overly aggressive range checking for the Stall 9835operator. The valid range (max 255) is now only checked if the operand is 9836of 9837type Integer. All other operand types cannot be statically checked. 9838 9839Fixed a problem where control method references within the RefOf, 9840DeRefOf, 9841and ObjectType operators were not treated properly. They are now treated 9842as 9843actual references, not method invocations. 9844 9845Fixed and enhanced the "list namespace" option (-ln). This option was 9846broken 9847a number of releases ago. 9848 9849Improved error handling for the Field, IndexField, and BankField 9850operators. 9851The compiler now cleanly reports and recovers from errors in the field 9852component (FieldUnit) list. 9853 9854Fixed a disassembler problem where the optional ResourceDescriptor fields 9855TRS and TTP were not always handled correctly. 9856 9857Disassembler - Comments in output now use "//" instead of "/*" 9858 9859---------------------------------------- 986028 February 2005. Summary of changes for version 20050228: 9861 98621) ACPI CA Core Subsystem: 9863 9864Fixed a problem where the result of an Index() operator (an object 9865reference) must increment the reference count on the target object for 9866the 9867life of the object reference. 9868 9869Implemented AML Interpreter and Debugger support for the new ACPI 3.0 9870Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 9871WordSpace 9872resource descriptors. 9873 9874Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 9875Space Descriptor" string, indicating interpreter support for the 9876descriptors 9877above. 9878 9879Implemented header support for the new ACPI 3.0 FADT flag bits. 9880 9881Implemented header support for the new ACPI 3.0 PCI Express bits for the 9882PM1 9883status/enable registers. 9884 9885Updated header support for the MADT processor local Apic struct and MADT 9886platform interrupt source struct for new ACPI 3.0 fields. 9887 9888Implemented header support for the SRAT and SLIT ACPI tables. 9889 9890Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 9891flag 9892at runtime. 9893 9894Code and Data Size: Current and previous core subsystem library sizes are 9895shown below. These are the code and data sizes for the acpica.lib 9896produced 9897by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9898any ACPI driver or OSPM code. The debug version of the code includes the 9899debug output trace mechanism and has a much larger code and data size. 9900Note 9901that these values will vary depending on the efficiency of the compiler 9902and 9903the compiler options used during generation. 9904 9905 Previous Release: 9906 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 9907 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 9908 Current Release: 9909 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9910 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 9911 9912 99132) iASL Compiler/Disassembler: 9914 9915Fixed a problem with the internal 64-bit String-to-integer conversion 9916with 9917strings less than two characters long. 9918 9919Fixed a problem with constant folding where the result of the Index() 9920operator can not be considered a constant. This means that Index() cannot 9921be 9922a type3 opcode and this will require an update to the ACPI specification. 9923 9924Disassembler: Implemented support for the TTP, MTP, and TRS resource 9925descriptor fields. These fields were inadvertently ignored and not output 9926in 9927the disassembly of the resource descriptor. 9928 9929 9930 ---------------------------------------- 993111 February 2005. Summary of changes for version 20050211: 9932 99331) ACPI CA Core Subsystem: 9934 9935Implemented ACPI 3.0 support for implicit conversion within the Match() 9936operator. MatchObjects can now be of type integer, buffer, or string 9937instead 9938of just type integer. Package elements are implicitly converted to the 9939type 9940of the MatchObject. This change aligns the behavior of Match() with the 9941behavior of the other logical operators (LLess(), etc.) It also requires 9942an 9943errata change to the ACPI specification as this support was intended for 9944ACPI 3.0, but was inadvertently omitted. 9945 9946Fixed a problem with the internal implicit "to buffer" conversion. 9947Strings 9948that are converted to buffers will cause buffer truncation if the string 9949is 9950smaller than the target buffer. Integers that are converted to buffers 9951will 9952not cause buffer truncation, only zero extension (both as per the ACPI 9953spec.) The problem was introduced when code was added to truncate the 9954buffer, but this should not be performed in all cases, only the string 9955case. 9956 9957Fixed a problem with the Buffer and Package operators where the 9958interpreter 9959would get confused if two such operators were used as operands to an ASL 9960operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 9961stack was not being popped after the execution of these operators, 9962resulting 9963in an AE_NO_RETURN_VALUE exception. 9964 9965Fixed a problem with constructs of the form Store(Index(...),...). The 9966reference object returned from Index was inadvertently resolved to an 9967actual 9968value. This problem was introduced in version 20050114 when the behavior 9969of 9970Store() was modified to restrict the object types that can be used as the 9971source operand (to match the ACPI specification.) 9972 9973Reduced excessive stack use within the AcpiGetObjectInfo procedure. 9974 9975Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 9976 9977Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 9978 9979Code and Data Size: Current and previous core subsystem library sizes are 9980shown below. These are the code and data sizes for the acpica.lib 9981produced 9982by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9983any ACPI driver or OSPM code. The debug version of the code includes the 9984debug output trace mechanism and has a much larger code and data size. 9985Note 9986that these values will vary depending on the efficiency of the compiler 9987and 9988the compiler options used during generation. 9989 9990 Previous Release: 9991 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 9992 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 9993 Current Release: 9994 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 9995 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 9996 9997 99982) iASL Compiler/Disassembler: 9999 10000Fixed a code generation problem in the constant folding optimization code 10001where incorrect code was generated if a constant was reduced to a buffer 10002object (i.e., a reduced type 5 opcode.) 10003 10004Fixed a typechecking problem for the ToBuffer operator. Caused by an 10005incorrect return type in the internal opcode information table. 10006 10007---------------------------------------- 1000825 January 2005. Summary of changes for version 20050125: 10009 100101) ACPI CA Core Subsystem: 10011 10012Fixed a recently introduced problem with the Global Lock where the 10013underlying semaphore was not created. This problem was introduced in 10014version 20050114, and caused an AE_AML_NO_OPERAND exception during an 10015Acquire() operation on _GL. 10016 10017The local object cache is now optional, and is disabled by default. Both 10018AcpiExec and the iASL compiler enable the cache because they run in user 10019mode and this enhances their performance. #define 10020ACPI_ENABLE_OBJECT_CACHE 10021to enable the local cache. 10022 10023Fixed an issue in the internal function AcpiUtEvaluateObject concerning 10024the 10025optional "implicit return" support where an error was returned if no 10026return 10027object was expected, but one was implicitly returned. AE_OK is now 10028returned 10029in this case and the implicitly returned object is deleted. 10030AcpiUtEvaluateObject is only occasionally used, and only to execute 10031reserved 10032methods such as _STA and _INI where the return type is known up front. 10033 10034Fixed a few issues with the internal convert-to-integer code. It now 10035returns 10036an error if an attempt is made to convert a null string, a string of only 10037blanks/tabs, or a zero-length buffer. This affects both implicit 10038conversion 10039and explicit conversion via the ToInteger() operator. 10040 10041The internal debug code in AcpiUtAcquireMutex has been commented out. It 10042is 10043not needed for normal operation and should increase the performance of 10044the 10045entire subsystem. The code remains in case it is needed for debug 10046purposes 10047again. 10048 10049The AcpiExec source and makefile are included in the Unix/Linux package 10050for 10051the first time. 10052 10053Code and Data Size: Current and previous core subsystem library sizes are 10054shown below. These are the code and data sizes for the acpica.lib 10055produced 10056by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10057any ACPI driver or OSPM code. The debug version of the code includes the 10058debug output trace mechanism and has a much larger code and data size. 10059Note 10060that these values will vary depending on the efficiency of the compiler 10061and 10062the compiler options used during generation. 10063 10064 Previous Release: 10065 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10066 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10067 Current Release: 10068 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10069 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10070 100712) iASL Compiler/Disassembler: 10072 10073Switch/Case support: A warning is now issued if the type of the Switch 10074value 10075cannot be determined at compile time. For example, Switch(Arg0) will 10076generate the warning, and the type is assumed to be an integer. As per 10077the 10078ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 10079the 10080warning. 10081 10082Switch/Case support: Implemented support for buffer and string objects as 10083the switch value. This is an ACPI 3.0 feature, now that LEqual supports 10084buffers and strings. 10085 10086Switch/Case support: The emitted code for the LEqual() comparisons now 10087uses 10088the switch value as the first operand, not the second. The case value is 10089now 10090the second operand, and this allows the case value to be implicitly 10091converted to the type of the switch value, not the other way around. 10092 10093Switch/Case support: Temporary variables are now emitted immediately 10094within 10095the control method, not at the global level. This means that there are 10096now 1009736 temps available per-method, not 36 temps per-module as was the case 10098with 10099the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 10100 10101---------------------------------------- 1010214 January 2005. Summary of changes for version 20050114: 10103 10104Added 2005 copyright to all module headers. This affects every module in 10105the core subsystem, iASL compiler, and the utilities. 10106 101071) ACPI CA Core Subsystem: 10108 10109Fixed an issue with the String-to-Buffer conversion code where the string 10110null terminator was not included in the buffer after conversion, but 10111there 10112is existing ASL that assumes the string null terminator is included. This 10113is 10114the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 10115introduced in the previous version when the code was updated to correctly 10116set the converted buffer size as per the ACPI specification. The ACPI 10117spec 10118is ambiguous and will be updated to specify that the null terminator must 10119be 10120included in the converted buffer. This also affects the ToBuffer() ASL 10121operator. 10122 10123Fixed a problem with the Mid() ASL/AML operator where it did not work 10124correctly on Buffer objects. Newly created sub-buffers were not being 10125marked 10126as initialized. 10127 10128 10129Fixed a problem in AcpiTbFindTable where incorrect string compares were 10130performed on the OemId and OemTableId table header fields. These fields 10131are 10132not null terminated, so strncmp is now used instead of strcmp. 10133 10134Implemented a restriction on the Store() ASL/AML operator to align the 10135behavior with the ACPI specification. Previously, any object could be 10136used 10137as the source operand. Now, the only objects that may be used are 10138Integers, 10139Buffers, Strings, Packages, Object References, and DDB Handles. If 10140necessary, the original behavior can be restored by enabling the 10141EnableInterpreterSlack flag. 10142 10143Enhanced the optional "implicit return" support to allow an implicit 10144return 10145value from methods that are invoked externally via the AcpiEvaluateObject 10146interface. This enables implicit returns from the _STA and _INI methods, 10147for example. 10148 10149Changed the Revision() ASL/AML operator to return the current version of 10150the 10151AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 10152returned 10153the supported ACPI version (This is the function of the _REV method). 10154 10155Updated the _REV predefined method to return the currently supported 10156version 10157of ACPI, now 3. 10158 10159Implemented batch mode option for the AcpiExec utility (-b). 10160 10161Code and Data Size: Current and previous core subsystem library sizes are 10162shown below. These are the code and data sizes for the acpica.lib 10163produced 10164by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10165any ACPI driver or OSPM code. The debug version of the code includes the 10166debug output trace mechanism and has a much larger code and data size. 10167Note 10168that these values will vary depending on the efficiency of the compiler 10169and 10170the compiler options used during generation. 10171 10172 Previous Release: 10173 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10174 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10175 Current Release: 10176 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10177 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10178 10179---------------------------------------- 1018010 December 2004. Summary of changes for version 20041210: 10181 10182ACPI 3.0 support is nearing completion in both the iASL compiler and the 10183ACPI CA core subsystem. 10184 101851) ACPI CA Core Subsystem: 10186 10187Fixed a problem in the ToDecimalString operator where the resulting 10188string 10189length was incorrectly calculated. The length is now calculated exactly, 10190eliminating incorrect AE_STRING_LIMIT exceptions. 10191 10192Fixed a problem in the ToHexString operator to allow a maximum 200 10193character 10194string to be produced. 10195 10196Fixed a problem in the internal string-to-buffer and buffer-to-buffer 10197copy 10198routine where the length of the resulting buffer was not truncated to the 10199new size (if the target buffer already existed). 10200 10201Code and Data Size: Current and previous core subsystem library sizes are 10202shown below. These are the code and data sizes for the acpica.lib 10203produced 10204by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10205any ACPI driver or OSPM code. The debug version of the code includes the 10206debug output trace mechanism and has a much larger code and data size. 10207Note 10208that these values will vary depending on the efficiency of the compiler 10209and 10210the compiler options used during generation. 10211 10212 Previous Release: 10213 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10214 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10215 Current Release: 10216 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10217 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10218 10219 102202) iASL Compiler/Disassembler: 10221 10222Implemented the new ACPI 3.0 resource template macros - DWordSpace, 10223ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 10224Includes support in the disassembler. 10225 10226Implemented support for the new (ACPI 3.0) parameter to the Register 10227macro, 10228AccessSize. 10229 10230Fixed a problem where the _HE resource name for the Interrupt macro was 10231referencing bit 0 instead of bit 1. 10232 10233Implemented check for maximum 255 interrupts in the Interrupt macro. 10234 10235Fixed a problem with the predefined resource descriptor names where 10236incorrect AML code was generated if the offset within the resource buffer 10237was 0 or 1. The optimizer shortened the AML code to a single byte opcode 10238but did not update the surrounding package lengths. 10239 10240Changes to the Dma macro: All channels within the channel list must be 10241in 10242the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 10243optional (default is BusMaster). 10244 10245Implemented check for maximum 7 data bytes for the VendorShort macro. 10246 10247The ReadWrite parameter is now optional for the Memory32 and similar 10248macros. 10249 10250---------------------------------------- 1025103 December 2004. Summary of changes for version 20041203: 10252 102531) ACPI CA Core Subsystem: 10254 10255The low-level field insertion/extraction code (exfldio) has been 10256completely 10257rewritten to eliminate unnecessary complexity, bugs, and boundary 10258conditions. 10259 10260Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 10261ToDecimalString 10262operators where the input operand could be inadvertently deleted if no 10263conversion was necessary (e.g., if the input to ToInteger was an Integer 10264object.) 10265 10266Fixed a problem with the ToDecimalString and ToHexString where an 10267incorrect 10268exception code was returned if the resulting string would be > 200 chars. 10269AE_STRING_LIMIT is now returned. 10270 10271Fixed a problem with the Concatenate operator where AE_OK was always 10272returned, even if the operation failed. 10273 10274Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 10275semaphores to be allocated. 10276 10277Code and Data Size: Current and previous core subsystem library sizes are 10278shown below. These are the code and data sizes for the acpica.lib 10279produced 10280by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10281any ACPI driver or OSPM code. The debug version of the code includes the 10282debug output trace mechanism and has a much larger code and data size. 10283Note 10284that these values will vary depending on the efficiency of the compiler 10285and 10286the compiler options used during generation. 10287 10288 Previous Release: 10289 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10290 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10291 Current Release: 10292 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10293 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10294 10295 102962) iASL Compiler/Disassembler: 10297 10298Fixed typechecking for the ObjectType and SizeOf operators. Problem was 10299recently introduced in 20041119. 10300 10301Fixed a problem with the ToUUID macro where the upper nybble of each 10302buffer 10303byte was inadvertently set to zero. 10304 10305---------------------------------------- 1030619 November 2004. Summary of changes for version 20041119: 10307 103081) ACPI CA Core Subsystem: 10309 10310Fixed a problem in the internal ConvertToInteger routine where new 10311integers 10312were not truncated to 32 bits for 32-bit ACPI tables. This routine 10313converts 10314buffers and strings to integers. 10315 10316Implemented support to store a value to an Index() on a String object. 10317This 10318is an ACPI 2.0 feature that had not yet been implemented. 10319 10320Implemented new behavior for storing objects to individual package 10321elements 10322(via the Index() operator). The previous behavior was to invoke the 10323implicit 10324conversion rules if an object was already present at the index. The new 10325behavior is to simply delete any existing object and directly store the 10326new 10327object. Although the ACPI specification seems unclear on this subject, 10328other 10329ACPI implementations behave in this manner. (This is the root of the 10330AE_BAD_HEX_CONSTANT issue.) 10331 10332Modified the RSDP memory scan mechanism to support the extended checksum 10333for 10334ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 10335RSDP signature is found with a valid checksum. 10336 10337Code and Data Size: Current and previous core subsystem library sizes are 10338shown below. These are the code and data sizes for the acpica.lib 10339produced 10340by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10341any ACPI driver or OSPM code. The debug version of the code includes the 10342debug output trace mechanism and has a much larger code and data size. 10343Note 10344that these values will vary depending on the efficiency of the compiler 10345and 10346the compiler options used during generation. 10347 10348 Previous Release: 10349 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10350 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10351 Current Release: 10352 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10353 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10354 10355 103562) iASL Compiler/Disassembler: 10357 10358Fixed a missing semicolon in the aslcompiler.y file. 10359 10360---------------------------------------- 1036105 November 2004. Summary of changes for version 20041105: 10362 103631) ACPI CA Core Subsystem: 10364 10365Implemented support for FADT revision 2. This was an interim table 10366(between 10367ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 10368 10369Implemented optional support to allow uninitialized LocalX and ArgX 10370variables in a control method. The variables are initialized to an 10371Integer 10372object with a value of zero. This support is enabled by setting the 10373AcpiGbl_EnableInterpreterSlack flag to TRUE. 10374 10375Implemented support for Integer objects for the SizeOf operator. Either 103764 10377or 8 is returned, depending on the current integer size (32-bit or 64- 10378bit, 10379depending on the parent table revision). 10380 10381Fixed a problem in the implementation of the SizeOf and ObjectType 10382operators 10383where the operand was resolved to a value too early, causing incorrect 10384return values for some objects. 10385 10386Fixed some possible memory leaks during exceptional conditions. 10387 10388Code and Data Size: Current and previous core subsystem library sizes are 10389shown below. These are the code and data sizes for the acpica.lib 10390produced 10391by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10392any ACPI driver or OSPM code. The debug version of the code includes the 10393debug output trace mechanism and has a much larger code and data size. 10394Note 10395that these values will vary depending on the efficiency of the compiler 10396and 10397the compiler options used during generation. 10398 10399 Previous Release: 10400 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10401 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10402 Current Release: 10403 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10404 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10405 10406 104072) iASL Compiler/Disassembler: 10408 10409Implemented support for all ACPI 3.0 reserved names and methods. 10410 10411Implemented all ACPI 3.0 grammar elements in the front-end, including 10412support for semicolons. 10413 10414Implemented the ACPI 3.0 Function() and ToUUID() macros 10415 10416Fixed a problem in the disassembler where a Scope() operator would not be 10417emitted properly if the target of the scope was in another table. 10418 10419---------------------------------------- 1042015 October 2004. Summary of changes for version 20041015: 10421 10422Note: ACPI CA is currently undergoing an in-depth and complete formal 10423evaluation to test/verify the following areas. Other suggestions are 10424welcome. This will result in an increase in the frequency of releases and 10425the number of bug fixes in the next few months. 10426 - Functional tests for all ASL/AML operators 10427 - All implicit/explicit type conversions 10428 - Bit fields and operation regions 10429 - 64-bit math support and 32-bit-only "truncated" math support 10430 - Exceptional conditions, both compiler and interpreter 10431 - Dynamic object deletion and memory leaks 10432 - ACPI 3.0 support when implemented 10433 - External interfaces to the ACPI subsystem 10434 10435 104361) ACPI CA Core Subsystem: 10437 10438Fixed two alignment issues on 64-bit platforms - within debug statements 10439in 10440AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 10441Address 10442field within the non-aligned ACPI generic address structure. 10443 10444Fixed a problem in the Increment and Decrement operators where incorrect 10445operand resolution could result in the inadvertent modification of the 10446original integer when the integer is passed into another method as an 10447argument and the arg is then incremented/decremented. 10448 10449Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 10450bit 10451BCD number were truncated during conversion. 10452 10453Fixed a problem in the ToDecimal operator where the length of the 10454resulting 10455string could be set incorrectly too long if the input operand was a 10456Buffer 10457object. 10458 10459Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 10460(0) 10461within a buffer would prematurely terminate a compare between buffer 10462objects. 10463 10464Added a check for string overflow (>200 characters as per the ACPI 10465specification) during the Concatenate operator with two string operands. 10466 10467Code and Data Size: Current and previous core subsystem library sizes are 10468shown below. These are the code and data sizes for the acpica.lib 10469produced 10470by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10471any ACPI driver or OSPM code. The debug version of the code includes the 10472debug output trace mechanism and has a much larger code and data size. 10473Note 10474that these values will vary depending on the efficiency of the compiler 10475and 10476the compiler options used during generation. 10477 10478 Previous Release: 10479 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10480 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10481 Current Release: 10482 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10483 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10484 10485 10486 104872) iASL Compiler/Disassembler: 10488 10489Allow the use of the ObjectType operator on uninitialized Locals and Args 10490(returns 0 as per the ACPI specification). 10491 10492Fixed a problem where the compiler would fault if there was a syntax 10493error 10494in the FieldName of all of the various CreateXXXField operators. 10495 10496Disallow the use of lower case letters within the EISAID macro, as per 10497the 10498ACPI specification. All EISAID strings must be of the form "UUUNNNN" 10499Where 10500U is an uppercase letter and N is a hex digit. 10501 10502 10503---------------------------------------- 1050406 October 2004. Summary of changes for version 20041006: 10505 105061) ACPI CA Core Subsystem: 10507 10508Implemented support for the ACPI 3.0 Timer operator. This ASL function 10509implements a 64-bit timer with 100 nanosecond granularity. 10510 10511Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 10512implement the ACPI 3.0 Timer operator. This allows the host OS to 10513implement 10514the timer with the best clock available. Also, it keeps the core 10515subsystem 10516out of the clock handling business, since the host OS (usually) performs 10517this function. 10518 10519Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 10520functions use a 64-bit address which is part of the packed ACPI Generic 10521Address Structure. Since the structure is non-aligned, the alignment 10522macros 10523are now used to extract the address to a local variable before use. 10524 10525Fixed a problem where the ToInteger operator assumed all input strings 10526were 10527hexadecimal. The operator now handles both decimal strings and hex 10528strings 10529(prefixed with "0x"). 10530 10531Fixed a problem where the string length in the string object created as a 10532result of the internal ConvertToString procedure could be incorrect. This 10533potentially affected all implicit conversions and also the 10534ToDecimalString 10535and ToHexString operators. 10536 10537Fixed two problems in the ToString operator. If the length parameter was 10538zero, an incorrect string object was created and the value of the input 10539length parameter was inadvertently changed from zero to Ones. 10540 10541Fixed a problem where the optional ResourceSource string in the 10542ExtendedIRQ 10543resource macro was ignored. 10544 10545Simplified the interfaces to the internal division functions, reducing 10546code 10547size and complexity. 10548 10549Code and Data Size: Current and previous core subsystem library sizes are 10550shown below. These are the code and data sizes for the acpica.lib 10551produced 10552by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10553any ACPI driver or OSPM code. The debug version of the code includes the 10554debug output trace mechanism and has a much larger code and data size. 10555Note 10556that these values will vary depending on the efficiency of the compiler 10557and 10558the compiler options used during generation. 10559 10560 Previous Release: 10561 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10562 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10563 Current Release: 10564 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10565 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10566 10567 105682) iASL Compiler/Disassembler: 10569 10570Implemented support for the ACPI 3.0 Timer operator. 10571 10572Fixed a problem where the Default() operator was inadvertently ignored in 10573a 10574Switch/Case block. This was a problem in the translation of the Switch 10575statement to If...Else pairs. 10576 10577Added support to allow a standalone Return operator, with no parentheses 10578(or 10579operands). 10580 10581Fixed a problem with code generation for the ElseIf operator where the 10582translated Else...If parse tree was improperly constructed leading to the 10583loss of some code. 10584 10585---------------------------------------- 1058622 September 2004. Summary of changes for version 20040922: 10587 105881) ACPI CA Core Subsystem: 10589 10590Fixed a problem with the implementation of the LNot() operator where 10591"Ones" 10592was not returned for the TRUE case. Changed the code to return Ones 10593instead 10594of (!Arg) which was usually 1. This change affects iASL constant folding 10595for 10596this operator also. 10597 10598Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 10599not 10600initialized properly -- Now zero the entire buffer in this case where the 10601buffer already exists. 10602 10603Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 10604Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 10605related code considerably. This will require changes/updates to all OS 10606interface layers (OSLs.) 10607 10608Implemented a new external interface, AcpiInstallExceptionHandler, to 10609allow 10610a system exception handler to be installed. This handler is invoked upon 10611any 10612run-time exception that occurs during control method execution. 10613 10614Added support for the DSDT in AcpiTbFindTable. This allows the 10615DataTableRegion() operator to access the local copy of the DSDT. 10616 10617Code and Data Size: Current and previous core subsystem library sizes are 10618shown below. These are the code and data sizes for the acpica.lib 10619produced 10620by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10621any ACPI driver or OSPM code. The debug version of the code includes the 10622debug output trace mechanism and has a much larger code and data size. 10623Note 10624that these values will vary depending on the efficiency of the compiler 10625and 10626the compiler options used during generation. 10627 10628 Previous Release: 10629 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 10630 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 10631 Current Release: 10632 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10633 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10634 10635 106362) iASL Compiler/Disassembler: 10637 10638Fixed a problem with constant folding and the LNot operator. LNot was 10639returning 1 in the TRUE case, not Ones as per the ACPI specification. 10640This 10641could result in the generation of an incorrect folded/reduced constant. 10642 10643End-Of-File is now allowed within a "//"-style comment. A parse error no 10644longer occurs if such a comment is at the very end of the input ASL 10645source 10646file. 10647 10648Implemented the "-r" option to override the Revision in the table header. 10649The initial use of this option will be to simplify the evaluation of the 10650AML 10651interpreter by allowing a single ASL source module to be compiled for 10652either 1065332-bit or 64-bit integers. 10654 10655 10656---------------------------------------- 1065727 August 2004. Summary of changes for version 20040827: 10658 106591) ACPI CA Core Subsystem: 10660 10661- Implemented support for implicit object conversion in the non-numeric 10662logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 10663and 10664LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 10665the second operand is implicitly converted on the fly to match the type 10666of 10667the first operand. For example: 10668 10669 LEqual (Source1, Source2) 10670 10671Source1 and Source2 must each evaluate to an integer, a string, or a 10672buffer. 10673The data type of Source1 dictates the required type of Source2. Source2 10674is 10675implicitly converted if necessary to match the type of Source1. 10676 10677- Updated and corrected the behavior of the string conversion support. 10678The 10679rules concerning conversion of buffers to strings (according to the ACPI 10680specification) are as follows: 10681 10682ToDecimalString - explicit byte-wise conversion of buffer to string of 10683decimal values (0-255) separated by commas. ToHexString - explicit byte- 10684wise 10685conversion of buffer to string of hex values (0-FF) separated by commas. 10686ToString - explicit byte-wise conversion of buffer to string. Byte-by- 10687byte 10688copy with no transform except NULL terminated. Any other implicit buffer- 10689to- 10690string conversion - byte-wise conversion of buffer to string of hex 10691values 10692(0-FF) separated by spaces. 10693 10694- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 10695 10696- Fixed a problem in AcpiNsGetPathnameLength where the returned length 10697was 10698one byte too short in the case of a node in the root scope. This could 10699cause a fault during debug output. 10700 10701- Code and Data Size: Current and previous core subsystem library sizes 10702are 10703shown below. These are the code and data sizes for the acpica.lib 10704produced 10705by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10706any ACPI driver or OSPM code. The debug version of the code includes the 10707debug output trace mechanism and has a much larger code and data size. 10708Note 10709that these values will vary depending on the efficiency of the compiler 10710and 10711the compiler options used during generation. 10712 10713 Previous Release: 10714 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 10715 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 10716 Current Release: 10717 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 10718 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 10719 10720 107212) iASL Compiler/Disassembler: 10722 10723- Fixed a Linux generation error. 10724 10725 10726---------------------------------------- 1072716 August 2004. Summary of changes for version 20040816: 10728 107291) ACPI CA Core Subsystem: 10730 10731Designed and implemented support within the AML interpreter for the so- 10732called "implicit return". This support returns the result of the last 10733ASL 10734operation within a control method, in the absence of an explicit Return() 10735operator. A few machines depend on this behavior, even though it is not 10736explicitly supported by the ASL language. It is optional support that 10737can 10738be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 10739 10740Removed support for the PCI_Config address space from the internal low 10741level 10742hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 10743support was not used internally, and would not work correctly anyway 10744because 10745the PCI bus number and segment number were not supported. There are 10746separate interfaces for PCI configuration space access because of the 10747unique 10748interface. 10749 10750Code and Data Size: Current and previous core subsystem library sizes are 10751shown below. These are the code and data sizes for the acpica.lib 10752produced 10753by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10754any ACPI driver or OSPM code. The debug version of the code includes the 10755debug output trace mechanism and has a much larger code and data size. 10756Note 10757that these values will vary depending on the efficiency of the compiler 10758and 10759the compiler options used during generation. 10760 10761 Previous Release: 10762 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10763 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 10764 Current Release: 10765 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 10766 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 10767 10768 107692) iASL Compiler/Disassembler: 10770 10771Fixed a problem where constants in ASL expressions at the root level (not 10772within a control method) could be inadvertently truncated during code 10773generation. This problem was introduced in the 20040715 release. 10774 10775 10776---------------------------------------- 1077715 July 2004. Summary of changes for version 20040715: 10778 107791) ACPI CA Core Subsystem: 10780 10781Restructured the internal HW GPE interfaces to pass/track the current 10782state 10783of interrupts (enabled/disabled) in order to avoid possible deadlock and 10784increase flexibility of the interfaces. 10785 10786Implemented a "lexicographical compare" for String and Buffer objects 10787within 10788the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 10789- 10790as per further clarification to the ACPI specification. Behavior is 10791similar 10792to C library "strcmp". 10793 10794Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 10795external function. In the 32-bit non-debug case, the stack use has been 10796reduced from 168 bytes to 32 bytes. 10797 10798Deployed a new run-time configuration flag, 10799AcpiGbl_EnableInterpreterSlack, 10800whose purpose is to allow the AML interpreter to forgive certain bad AML 10801constructs. Default setting is FALSE. 10802 10803Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 10804IO 10805support code. If enabled, it allows field access to go beyond the end of 10806a 10807region definition if the field is within the region length rounded up to 10808the 10809next access width boundary (a common coding error.) 10810 10811Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 10812ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 10813these 10814symbols are lowercased by the latest version of the AcpiSrc tool. 10815 10816The prototypes for the PCI interfaces in acpiosxf.h have been updated to 10817rename "Register" to simply "Reg" to prevent certain compilers from 10818complaining. 10819 10820Code and Data Size: Current and previous core subsystem library sizes are 10821shown below. These are the code and data sizes for the acpica.lib 10822produced 10823by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10824any ACPI driver or OSPM code. The debug version of the code includes the 10825debug output trace mechanism and has a much larger code and data size. 10826Note 10827that these values will vary depending on the efficiency of the compiler 10828and 10829the compiler options used during generation. 10830 10831 Previous Release: 10832 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10833 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 10834 Current Release: 10835 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10836 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 10837 10838 108392) iASL Compiler/Disassembler: 10840 10841Implemented full support for Package objects within the Case() operator. 10842Note: The Break() operator is currently not supported within Case blocks 10843(TermLists) as there is some question about backward compatibility with 10844ACPI 108451.0 interpreters. 10846 10847 10848Fixed a problem where complex terms were not supported properly within 10849the 10850Switch() operator. 10851 10852Eliminated extraneous warning for compiler-emitted reserved names of the 10853form "_T_x". (Used in Switch/Case operators.) 10854 10855Eliminated optimization messages for "_T_x" objects and small constants 10856within the DefinitionBlock operator. 10857 10858 10859---------------------------------------- 1086015 June 2004. Summary of changes for version 20040615: 10861 108621) ACPI CA Core Subsystem: 10863 10864Implemented support for Buffer and String objects (as per ACPI 2.0) for 10865the 10866following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 10867LLessEqual. 10868 10869All directory names in the entire source package are lower case, as they 10870were in earlier releases. 10871 10872Implemented "Disassemble" command in the AML debugger that will 10873disassemble 10874a single control method. 10875 10876Code and Data Size: Current and previous core subsystem library sizes are 10877shown below. These are the code and data sizes for the acpica.lib 10878produced 10879by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10880any ACPI driver or OSPM code. The debug version of the code includes the 10881debug output trace mechanism and has a much larger code and data size. 10882Note 10883that these values will vary depending on the efficiency of the compiler 10884and 10885the compiler options used during generation. 10886 10887 Previous Release: 10888 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 10889 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 10890 10891 Current Release: 10892 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10893 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 10894 10895 108962) iASL Compiler/Disassembler: 10897 10898Implemented support for Buffer and String objects (as per ACPI 2.0) for 10899the 10900following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 10901LLessEqual. 10902 10903All directory names in the entire source package are lower case, as they 10904were in earlier releases. 10905 10906Fixed a fault when using the -g or -d<nofilename> options if the FADT was 10907not found. 10908 10909Fixed an issue with the Windows version of the compiler where later 10910versions 10911of Windows place the FADT in the registry under the name "FADT" and not 10912"FACP" as earlier versions did. This applies when using the -g or - 10913d<nofilename> options. The compiler now looks for both strings as 10914necessary. 10915 10916Fixed a problem with compiler namepath optimization where a namepath 10917within 10918the Scope() operator could not be optimized if the namepath was a subpath 10919of 10920the current scope path. 10921 10922---------------------------------------- 1092327 May 2004. Summary of changes for version 20040527: 10924 109251) ACPI CA Core Subsystem: 10926 10927Completed a new design and implementation for EBDA (Extended BIOS Data 10928Area) 10929support in the RSDP scan code. The original code improperly scanned for 10930the 10931EBDA by simply scanning from memory location 0 to 0x400. The correct 10932method 10933is to first obtain the EBDA pointer from within the BIOS data area, then 10934scan 1K of memory starting at the EBDA pointer. There appear to be few 10935if 10936any machines that place the RSDP in the EBDA, however. 10937 10938Integrated a fix for a possible fault during evaluation of BufferField 10939arguments. Obsolete code that was causing the problem was removed. 10940 10941Found and fixed a problem in the Field Support Code where data could be 10942corrupted on a bit field read that starts on an aligned boundary but does 10943not end on an aligned boundary. Merged the read/write "datum length" 10944calculation code into a common procedure. 10945 10946Rolled in a couple of changes to the FreeBSD-specific header. 10947 10948 10949Code and Data Size: Current and previous core subsystem library sizes are 10950shown below. These are the code and data sizes for the acpica.lib 10951produced 10952by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10953any ACPI driver or OSPM code. The debug version of the code includes the 10954debug output trace mechanism and has a much larger code and data size. 10955Note 10956that these values will vary depending on the efficiency of the compiler 10957and 10958the compiler options used during generation. 10959 10960 Previous Release: 10961 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 10962 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 10963 Current Release: 10964 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 10965 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 10966 10967 109682) iASL Compiler/Disassembler: 10969 10970Fixed a generation warning produced by some overly-verbose compilers for 10971a 1097264-bit constant. 10973 10974---------------------------------------- 1097514 May 2004. Summary of changes for version 20040514: 10976 109771) ACPI CA Core Subsystem: 10978 10979Fixed a problem where hardware GPE enable bits sometimes not set properly 10980during and after GPE method execution. Result of 04/27 changes. 10981 10982Removed extra "clear all GPEs" when sleeping/waking. 10983 10984Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 10985AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 10986to 10987the new AcpiEv* calls as appropriate. 10988 10989ACPI_OS_NAME was removed from the OS-specific headers. The default name 10990is 10991now "Microsoft Windows NT" for maximum compatibility. However this can 10992be 10993changed by modifying the acconfig.h file. 10994 10995Allow a single invocation of AcpiInstallNotifyHandler for a handler that 10996traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 10997 10998Run _INI methods on ThermalZone objects. This is against the ACPI 10999specification, but there is apparently ASL code in the field that has 11000these 11001_INI methods, and apparently "other" AML interpreters execute them. 11002 11003Performed a full 16/32/64 bit lint that resulted in some small changes. 11004 11005Added a sleep simulation command to the AML debugger to test sleep code. 11006 11007Code and Data Size: Current and previous core subsystem library sizes are 11008shown below. These are the code and data sizes for the acpica.lib 11009produced 11010by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11011any ACPI driver or OSPM code. The debug version of the code includes the 11012debug output trace mechanism and has a much larger code and data size. 11013Note 11014that these values will vary depending on the efficiency of the compiler 11015and 11016the compiler options used during generation. 11017 11018 Previous Release: 11019 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11020 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11021 Current Release: 11022 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11023 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11024 11025---------------------------------------- 1102627 April 2004. Summary of changes for version 20040427: 11027 110281) ACPI CA Core Subsystem: 11029 11030Completed a major overhaul of the GPE handling within ACPI CA. There are 11031now three types of GPEs: wake-only, runtime-only, and combination 11032wake/run. 11033The only GPEs allowed to be combination wake/run are for button-style 11034devices such as a control-method power button, control-method sleep 11035button, 11036or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 11037not 11038referenced by any _PRW methods are marked for "runtime" and hardware 11039enabled. Any GPE that is referenced by a _PRW method is marked for 11040"wake" 11041(and disabled at runtime). However, at sleep time, only those GPEs that 11042have been specifically enabled for wake via the AcpiEnableGpe interface 11043will 11044actually be hardware enabled. 11045 11046A new external interface has been added, AcpiSetGpeType(), that is meant 11047to 11048be used by device drivers to force a GPE to a particular type. It will 11049be 11050especially useful for the drivers for the button devices mentioned above. 11051 11052Completed restructuring of the ACPI CA initialization sequence so that 11053default operation region handlers are installed before GPEs are 11054initialized 11055and the _PRW methods are executed. This will prevent errors when the 11056_PRW 11057methods attempt to access system memory or I/O space. 11058 11059GPE enable/disable no longer reads the GPE enable register. We now keep 11060the 11061enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 11062thus no longer depend on the hardware to maintain these bits. 11063 11064Always clear the wake status and fixed/GPE status bits before sleep, even 11065for state S5. 11066 11067Improved the AML debugger output for displaying the GPE blocks and their 11068current status. 11069 11070Added new strings for the _OSI method, of the form "Windows 2001 SPx" 11071where 11072x = 0,1,2,3,4. 11073 11074Fixed a problem where the physical address was incorrectly calculated 11075when 11076the Load() operator was used to directly load from an Operation Region 11077(vs. 11078loading from a Field object.) Also added check for minimum table length 11079for 11080this case. 11081 11082Fix for multiple mutex acquisition. Restore original thread SyncLevel on 11083mutex release. 11084 11085Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 11086consistency with the other fields returned. 11087 11088Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 11089structure for each GPE in the system, so the size of this structure is 11090important. 11091 11092CPU stack requirement reduction: Cleaned up the method execution and 11093object 11094evaluation paths so that now a parameter structure is passed, instead of 11095copying the various method parameters over and over again. 11096 11097In evregion.c: Correctly exit and reenter the interpreter region if and 11098only if dispatching an operation region request to a user-installed 11099handler. 11100Do not exit/reenter when dispatching to a default handler (e.g., default 11101system memory or I/O handlers) 11102 11103 11104Notes for updating drivers for the new GPE support. The following 11105changes 11106must be made to ACPI-related device drivers that are attached to one or 11107more 11108GPEs: (This information will be added to the ACPI CA Programmer 11109Reference.) 11110 111111) AcpiInstallGpeHandler no longer automatically enables the GPE, you 11112must 11113explicitly call AcpiEnableGpe. 111142) There is a new interface called AcpiSetGpeType. This should be called 11115before enabling the GPE. Also, this interface will automatically disable 11116the GPE if it is currently enabled. 111173) AcpiEnableGpe no longer supports a GPE type flag. 11118 11119Specific drivers that must be changed: 111201) EC driver: 11121 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 11122AeGpeHandler, NULL); 11123 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 11124 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 11125 111262) Button Drivers (Power, Lid, Sleep): 11127Run _PRW method under parent device 11128If _PRW exists: /* This is a control-method button */ 11129 Extract GPE number and possibly GpeDevice 11130 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 11131 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 11132 11133For all other devices that have _PRWs, we automatically set the GPE type 11134to 11135ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 11136This 11137must be done on a selective basis, usually requiring some kind of user 11138app 11139to allow the user to pick the wake devices. 11140 11141 11142Code and Data Size: Current and previous core subsystem library sizes are 11143shown below. These are the code and data sizes for the acpica.lib 11144produced 11145by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11146any ACPI driver or OSPM code. The debug version of the code includes the 11147debug output trace mechanism and has a much larger code and data size. 11148Note 11149that these values will vary depending on the efficiency of the compiler 11150and 11151the compiler options used during generation. 11152 11153 Previous Release: 11154 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11155 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11156 Current Release: 11157 11158 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11159 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11160 11161 11162 11163---------------------------------------- 1116402 April 2004. Summary of changes for version 20040402: 11165 111661) ACPI CA Core Subsystem: 11167 11168Fixed an interpreter problem where an indirect store through an ArgX 11169parameter was incorrectly applying the "implicit conversion rules" during 11170the store. From the ACPI specification: "If the target is a method local 11171or 11172argument (LocalX or ArgX), no conversion is performed and the result is 11173stored directly to the target". The new behavior is to disable implicit 11174conversion during ALL stores to an ArgX. 11175 11176Changed the behavior of the _PRW method scan to ignore any and all errors 11177returned by a given _PRW. This prevents the scan from aborting from the 11178failure of any single _PRW. 11179 11180Moved the runtime configuration parameters from the global init procedure 11181to 11182static variables in acglobal.h. This will allow the host to override the 11183default values easily. 11184 11185Code and Data Size: Current and previous core subsystem library sizes are 11186shown below. These are the code and data sizes for the acpica.lib 11187produced 11188by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11189any ACPI driver or OSPM code. The debug version of the code includes the 11190debug output trace mechanism and has a much larger code and data size. 11191Note 11192that these values will vary depending on the efficiency of the compiler 11193and 11194the compiler options used during generation. 11195 11196 Previous Release: 11197 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11198 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11199 Current Release: 11200 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11201 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11202 11203 112042) iASL Compiler/Disassembler: 11205 11206iASL now fully disassembles SSDTs. However, External() statements are 11207not 11208generated automatically for unresolved symbols at this time. This is a 11209planned feature for future implementation. 11210 11211Fixed a scoping problem in the disassembler that occurs when the type of 11212the 11213target of a Scope() operator is overridden. This problem caused an 11214incorrectly nested internal namespace to be constructed. 11215 11216Any warnings or errors that are emitted during disassembly are now 11217commented 11218out automatically so that the resulting file can be recompiled without 11219any 11220hand editing. 11221 11222---------------------------------------- 1122326 March 2004. Summary of changes for version 20040326: 11224 112251) ACPI CA Core Subsystem: 11226 11227Implemented support for "wake" GPEs via interaction between GPEs and the 11228_PRW methods. Every GPE that is pointed to by one or more _PRWs is 11229identified as a WAKE GPE and by default will no longer be enabled at 11230runtime. Previously, we were blindly enabling all GPEs with a 11231corresponding 11232_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 11233We 11234believe this has been the cause of thousands of "spurious" GPEs on some 11235systems. 11236 11237This new GPE behavior is can be reverted to the original behavior (enable 11238ALL GPEs at runtime) via a runtime flag. 11239 11240Fixed a problem where aliased control methods could not access objects 11241properly. The proper scope within the namespace was not initialized 11242(transferred to the target of the aliased method) before executing the 11243target method. 11244 11245Fixed a potential race condition on internal object deletion on the 11246return 11247object in AcpiEvaluateObject. 11248 11249Integrated a fix for resource descriptors where both _MEM and _MTP were 11250being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 11251wide, 0x0F instead of 0x03.) 11252 11253Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 11254preventing 11255a 11256fault in some cases. 11257 11258Updated Notify() values for debug statements in evmisc.c 11259 11260Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 11261 11262Code and Data Size: Current and previous core subsystem library sizes are 11263shown below. These are the code and data sizes for the acpica.lib 11264produced 11265by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11266any ACPI driver or OSPM code. The debug version of the code includes the 11267debug output trace mechanism and has a much larger code and data size. 11268Note 11269that these values will vary depending on the efficiency of the compiler 11270and 11271the compiler options used during generation. 11272 11273 Previous Release: 11274 11275 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11276 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11277 Current Release: 11278 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11279 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11280 11281---------------------------------------- 1128211 March 2004. Summary of changes for version 20040311: 11283 112841) ACPI CA Core Subsystem: 11285 11286Fixed a problem where errors occurring during the parse phase of control 11287method execution did not abort cleanly. For example, objects created and 11288installed in the namespace were not deleted. This caused all subsequent 11289invocations of the method to return the AE_ALREADY_EXISTS exception. 11290 11291Implemented a mechanism to force a control method to "Serialized" 11292execution 11293if the method attempts to create namespace objects. (The root of the 11294AE_ALREADY_EXISTS problem.) 11295 11296Implemented support for the predefined _OSI "internal" control method. 11297Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 11298and 11299"Windows 2001.1", and can be easily upgraded for new strings as 11300necessary. 11301This feature will allow "other" operating systems to execute the fully 11302tested, "Windows" code path through the ASL code 11303 11304Global Lock Support: Now allows multiple acquires and releases with any 11305internal thread. Removed concept of "owning thread" for this special 11306mutex. 11307 11308Fixed two functions that were inappropriately declaring large objects on 11309the 11310CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 11311during 11312method execution considerably. 11313 11314Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 11315S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 11316 11317Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 11318defined on the machine. 11319 11320Implemented two runtime options: One to force all control method 11321execution 11322to "Serialized" to mimic Windows behavior, another to disable _OSI 11323support 11324if it causes problems on a given machine. 11325 11326Code and Data Size: Current and previous core subsystem library sizes are 11327shown below. These are the code and data sizes for the acpica.lib 11328produced 11329by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11330any ACPI driver or OSPM code. The debug version of the code includes the 11331debug output trace mechanism and has a much larger code and data size. 11332Note 11333that these values will vary depending on the efficiency of the compiler 11334and 11335the compiler options used during generation. 11336 11337 Previous Release: 11338 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11339 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11340 Current Release: 11341 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11342 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11343 113442) iASL Compiler/Disassembler: 11345 11346Fixed an array size problem for FreeBSD that would cause the compiler to 11347fault. 11348 11349---------------------------------------- 1135020 February 2004. Summary of changes for version 20040220: 11351 11352 113531) ACPI CA Core Subsystem: 11354 11355Implemented execution of _SxD methods for Device objects in the 11356GetObjectInfo interface. 11357 11358Fixed calls to _SST method to pass the correct arguments. 11359 11360Added a call to _SST on wake to restore to "working" state. 11361 11362Check for End-Of-Buffer failure case in the WalkResources interface. 11363 11364Integrated fix for 64-bit alignment issue in acglobal.h by moving two 11365structures to the beginning of the file. 11366 11367After wake, clear GPE status register(s) before enabling GPEs. 11368 11369After wake, clear/enable power button. (Perhaps we should clear/enable 11370all 11371fixed events upon wake.) 11372 11373Fixed a couple of possible memory leaks in the Namespace manager. 11374 11375Integrated latest acnetbsd.h file. 11376 11377---------------------------------------- 1137811 February 2004. Summary of changes for version 20040211: 11379 11380 113811) ACPI CA Core Subsystem: 11382 11383Completed investigation and implementation of the call-by-reference 11384mechanism for control method arguments. 11385 11386Fixed a problem where a store of an object into an indexed package could 11387fail if the store occurs within a different method than the method that 11388created the package. 11389 11390Fixed a problem where the ToDecimal operator could return incorrect 11391results. 11392 11393Fixed a problem where the CopyObject operator could fail on some of the 11394more 11395obscure objects (e.g., Reference objects.) 11396 11397Improved the output of the Debug object to display buffer, package, and 11398index objects. 11399 11400Fixed a problem where constructs of the form "RefOf (ArgX)" did not 11401return 11402the expected result. 11403 11404Added permanent ACPI_REPORT_ERROR macros for all instances of the 11405ACPI_AML_INTERNAL exception. 11406 11407Integrated latest version of acfreebsd.h 11408 11409---------------------------------------- 1141016 January 2004. Summary of changes for version 20040116: 11411 11412The purpose of this release is primarily to update the copyright years in 11413each module, thus causing a huge number of diffs. There are a few small 11414functional changes, however. 11415 114161) ACPI CA Core Subsystem: 11417 11418Improved error messages when there is a problem finding one or more of 11419the 11420required base ACPI tables 11421 11422Reintroduced the definition of APIC_HEADER in actbl.h 11423 11424Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 11425 11426Removed extraneous reference to NewObj in dsmthdat.c 11427 114282) iASL compiler 11429 11430Fixed a problem introduced in December that disabled the correct 11431disassembly 11432of Resource Templates 11433 11434 11435---------------------------------------- 1143603 December 2003. Summary of changes for version 20031203: 11437 114381) ACPI CA Core Subsystem: 11439 11440Changed the initialization of Operation Regions during subsystem 11441init to perform two entire walks of the ACPI namespace; The first 11442to initialize the regions themselves, the second to execute the 11443_REG methods. This fixed some interdependencies across _REG 11444methods found on some machines. 11445 11446Fixed a problem where a Store(Local0, Local1) could simply update 11447the object reference count, and not create a new copy of the 11448object if the Local1 is uninitialized. 11449 11450Implemented support for the _SST reserved method during sleep 11451transitions. 11452 11453Implemented support to clear the SLP_TYP and SLP_EN bits when 11454waking up, this is apparently required by some machines. 11455 11456When sleeping, clear the wake status only if SleepState is not S5. 11457 11458Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 11459pointer arithmetic advanced a string pointer too far. 11460 11461Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 11462could be returned if the requested table has not been loaded. 11463 11464Within the support for IRQ resources, restructured the handling of 11465the active and edge/level bits. 11466 11467Fixed a few problems in AcpiPsxExecute() where memory could be 11468leaked under certain error conditions. 11469 11470Improved error messages for the cases where the ACPI mode could 11471not be entered. 11472 11473Code and Data Size: Current and previous core subsystem library 11474sizes are shown below. These are the code and data sizes for the 11475acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11476these values do not include any ACPI driver or OSPM code. The 11477debug version of the code includes the debug output trace 11478mechanism and has a much larger code and data size. Note that 11479these values will vary depending on the efficiency of the compiler 11480and the compiler options used during generation. 11481 11482 Previous Release (20031029): 11483 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11484 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11485 Current Release: 11486 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11487 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11488 114892) iASL Compiler/Disassembler: 11490 11491Implemented a fix for the iASL disassembler where a bad index was 11492generated. This was most noticeable on 64-bit platforms 11493 11494 11495---------------------------------------- 1149629 October 2003. Summary of changes for version 20031029: 11497 114981) ACPI CA Core Subsystem: 11499 11500 11501Fixed a problem where a level-triggered GPE with an associated 11502_Lxx control method was incorrectly cleared twice. 11503 11504Fixed a problem with the Field support code where an access can 11505occur beyond the end-of-region if the field is non-aligned but 11506extends to the very end of the parent region (resulted in an 11507AE_AML_REGION_LIMIT exception.) 11508 11509Fixed a problem with ACPI Fixed Events where an RT Clock handler 11510would not get invoked on an RTC event. The RTC event bitmasks for 11511the PM1 registers were not being initialized properly. 11512 11513Implemented support for executing _STA and _INI methods for 11514Processor objects. Although this is currently not part of the 11515ACPI specification, there is existing ASL code that depends on the 11516init-time execution of these methods. 11517 11518Implemented and deployed a GetDescriptorName function to decode 11519the various types of internal descriptors. Guards against null 11520descriptors during debug output also. 11521 11522Implemented and deployed a GetNodeName function to extract the 4- 11523character namespace node name. This function simplifies the debug 11524and error output, as well as guarding against null pointers during 11525output. 11526 11527Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 11528simplify the debug and error output of 64-bit integers. This 11529macro replaces the HIDWORD and LODWORD macros for dumping these 11530integers. 11531 11532Updated the implementation of the Stall() operator to only call 11533AcpiOsStall(), and also return an error if the operand is larger 11534than 255. This preserves the required behavior of not 11535relinquishing the processor, as would happen if AcpiOsSleep() was 11536called for "long stalls". 11537 11538Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 11539initialized are now treated as NOOPs. 11540 11541Cleaned up a handful of warnings during 64-bit generation. 11542 11543Fixed a reported error where and incorrect GPE number was passed 11544to the GPE dispatch handler. This value is only used for error 11545output, however. Used this opportunity to clean up and streamline 11546the GPE dispatch code. 11547 11548Code and Data Size: Current and previous core subsystem library 11549sizes are shown below. These are the code and data sizes for the 11550acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11551these values do not include any ACPI driver or OSPM code. The 11552 11553debug version of the code includes the debug output trace 11554mechanism and has a much larger code and data size. Note that 11555these values will vary depending on the efficiency of the compiler 11556and the compiler options used during generation. 11557 11558 Previous Release (20031002): 11559 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11560 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11561 Current Release: 11562 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11563 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11564 11565 115662) iASL Compiler/Disassembler: 11567 11568Updated the iASL compiler to return an error if the operand to the 11569Stall() operator is larger than 255. 11570 11571 11572---------------------------------------- 1157302 October 2003. Summary of changes for version 20031002: 11574 11575 115761) ACPI CA Core Subsystem: 11577 11578Fixed a problem with Index Fields where the index was not 11579incremented for fields that require multiple writes to the 11580index/data registers (Fields that are wider than the data 11581register.) 11582 11583Fixed a problem with all Field objects where a write could go 11584beyond the end-of-field if the field was larger than the access 11585granularity and therefore required multiple writes to complete the 11586request. An extra write beyond the end of the field could happen 11587inadvertently. 11588 11589Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 11590would incorrectly be returned if the width of the Data Register 11591was larger than the specified field access width. 11592 11593Completed fixes for LoadTable() and Unload() and verified their 11594operation. Implemented full support for the "DdbHandle" object 11595throughout the ACPI CA subsystem. 11596 11597Implemented full support for the MADT and ECDT tables in the ACPI 11598CA header files. Even though these tables are not directly 11599consumed by ACPI CA, the header definitions are useful for ACPI 11600device drivers. 11601 11602Integrated resource descriptor fixes posted to the Linux ACPI 11603list. This included checks for minimum descriptor length, and 11604support for trailing NULL strings within descriptors that have 11605optional string elements. 11606 11607Code and Data Size: Current and previous core subsystem library 11608sizes are shown below. These are the code and data sizes for the 11609acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11610these values do not include any ACPI driver or OSPM code. The 11611debug version of the code includes the debug output trace 11612mechanism and has a much larger code and data size. Note that 11613these values will vary depending on the efficiency of the compiler 11614and the compiler options used during generation. 11615 11616 Previous Release (20030918): 11617 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 11618 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 11619 Current Release: 11620 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11621 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11622 11623 116242) iASL Compiler: 11625 11626Implemented detection of non-ASCII characters within the input 11627source ASL file. This catches attempts to compile binary (AML) 11628files early in the compile, with an informative error message. 11629 11630Fixed a problem where the disassembler would fault if the output 11631filename could not be generated or if the output file could not be 11632opened. 11633 11634---------------------------------------- 1163518 September 2003. Summary of changes for version 20030918: 11636 11637 116381) ACPI CA Core Subsystem: 11639 11640Found and fixed a longstanding problem with the late execution of 11641the various deferred AML opcodes (such as Operation Regions, 11642Buffer Fields, Buffers, and Packages). If the name string 11643specified for the name of the new object placed the object in a 11644scope other than the current scope, the initialization/execution 11645of the opcode failed. The solution to this problem was to 11646implement a mechanism where the late execution of such opcodes 11647does not attempt to lookup/create the name a second time in an 11648incorrect scope. This fixes the "region size computed 11649incorrectly" problem. 11650 11651Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 11652Global Lock AE_BAD_PARAMETER error. 11653 11654Fixed several 64-bit issues with prototypes, casting and data 11655types. 11656 11657Removed duplicate prototype from acdisasm.h 11658 11659Fixed an issue involving EC Operation Region Detach (Shaohua Li) 11660 11661Code and Data Size: Current and previous core subsystem library 11662sizes are shown below. These are the code and data sizes for the 11663acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11664these values do not include any ACPI driver or OSPM code. The 11665debug version of the code includes the debug output trace 11666mechanism and has a much larger code and data size. Note that 11667these values will vary depending on the efficiency of the compiler 11668and the compiler options used during generation. 11669 11670 Previous Release: 11671 11672 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 11673 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 11674 Current Release: 11675 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 11676 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 11677 11678 116792) Linux: 11680 11681Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 11682correct sleep time in seconds. 11683 11684---------------------------------------- 1168514 July 2003. Summary of changes for version 20030619: 11686 116871) ACPI CA Core Subsystem: 11688 11689Parse SSDTs in order discovered, as opposed to reverse order 11690(Hrvoje Habjanic) 11691 11692Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 11693Klausner, 11694 Nate Lawson) 11695 11696 116972) Linux: 11698 11699Dynamically allocate SDT list (suggested by Andi Kleen) 11700 11701proc function return value cleanups (Andi Kleen) 11702 11703Correctly handle NMI watchdog during long stalls (Andrew Morton) 11704 11705Make it so acpismp=force works (reported by Andrew Morton) 11706 11707 11708---------------------------------------- 1170919 June 2003. Summary of changes for version 20030619: 11710 117111) ACPI CA Core Subsystem: 11712 11713Fix To/FromBCD, eliminating the need for an arch-specific #define. 11714 11715Do not acquire a semaphore in the S5 shutdown path. 11716 11717Fix ex_digits_needed for 0. (Takayoshi Kochi) 11718 11719Fix sleep/stall code reversal. (Andi Kleen) 11720 11721Revert a change having to do with control method calling 11722semantics. 11723 117242) Linux: 11725 11726acpiphp update (Takayoshi Kochi) 11727 11728Export acpi_disabled for sonypi (Stelian Pop) 11729 11730Mention acpismp=force in config help 11731 11732Re-add acpitable.c and acpismp=force. This improves backwards 11733 11734compatibility and also cleans up the code to a significant degree. 11735 11736Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 11737 11738---------------------------------------- 1173922 May 2003. Summary of changes for version 20030522: 11740 117411) ACPI CA Core Subsystem: 11742 11743Found and fixed a reported problem where an AE_NOT_FOUND error 11744occurred occasionally during _BST evaluation. This turned out to 11745be an Owner ID allocation issue where a called method did not get 11746a new ID assigned to it. Eventually, (after 64k calls), the Owner 11747ID UINT16 would wraparound so that the ID would be the same as the 11748caller's and the called method would delete the caller's 11749namespace. 11750 11751Implemented extended error reporting for control methods that are 11752aborted due to a run-time exception. Output includes the exact 11753AML instruction that caused the method abort, a dump of the method 11754locals and arguments at the time of the abort, and a trace of all 11755nested control method calls. 11756 11757Modified the interpreter to allow the creation of buffers of zero 11758length from the AML code. Implemented new code to ensure that no 11759attempt is made to actually allocate a memory buffer (of length 11760zero) - instead, a simple buffer object with a NULL buffer pointer 11761and length zero is created. A warning is no longer issued when 11762the AML attempts to create a zero-length buffer. 11763 11764Implemented a workaround for the "leading asterisk issue" in 11765_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 11766asterisk is automatically removed if present in any HID, UID, or 11767CID strings. The iASL compiler will still flag this asterisk as 11768an error, however. 11769 11770Implemented full support for _CID methods that return a package of 11771multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 11772now additionally returns a device _CID list if present. This 11773required a change to the external interface in order to pass an 11774ACPI_BUFFER object as a parameter since the _CID list is of 11775variable length. 11776 11777Fixed a problem with the new AE_SAME_HANDLER exception where 11778handler initialization code did not know about this exception. 11779 11780Code and Data Size: Current and previous core subsystem library 11781sizes are shown below. These are the code and data sizes for the 11782acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11783these values do not include any ACPI driver or OSPM code. The 11784debug version of the code includes the debug output trace 11785mechanism and has a much larger code and data size. Note that 11786these values will vary depending on the efficiency of the compiler 11787and the compiler options used during generation. 11788 11789 Previous Release (20030509): 11790 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 11791 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 11792 Current Release: 11793 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 11794 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 11795 11796 117972) Linux: 11798 11799Fixed a bug in which we would reinitialize the ACPI interrupt 11800after it was already working, thus disabling all ACPI and the IRQs 11801for any other device sharing the interrupt. (Thanks to Stian 11802Jordet) 11803 11804Toshiba driver update (John Belmonte) 11805 11806Return only 0 or 1 for our interrupt handler status (Andrew 11807Morton) 11808 11809 118103) iASL Compiler: 11811 11812Fixed a reported problem where multiple (nested) ElseIf() 11813statements were not handled correctly by the compiler, resulting 11814in incorrect warnings and incorrect AML code. This was a problem 11815in both the ASL parser and the code generator. 11816 11817 118184) Documentation: 11819 11820Added changes to existing interfaces, new exception codes, and new 11821text concerning reference count object management versus garbage 11822collection. 11823 11824---------------------------------------- 1182509 May 2003. Summary of changes for version 20030509. 11826 11827 118281) ACPI CA Core Subsystem: 11829 11830Changed the subsystem initialization sequence to hold off 11831installation of address space handlers until the hardware has been 11832initialized and the system has entered ACPI mode. This is because 11833the installation of space handlers can cause _REG methods to be 11834run. Previously, the _REG methods could potentially be run before 11835ACPI mode was enabled. 11836 11837Fixed some memory leak issues related to address space handler and 11838notify handler installation. There were some problems with the 11839reference count mechanism caused by the fact that the handler 11840objects are shared across several namespace objects. 11841 11842Fixed a reported problem where reference counts within the 11843namespace were not properly updated when named objects created by 11844method execution were deleted. 11845 11846Fixed a reported problem where multiple SSDTs caused a deletion 11847issue during subsystem termination. Restructured the table data 11848structures to simplify the linked lists and the related code. 11849 11850Fixed a problem where the table ID associated with secondary 11851tables (SSDTs) was not being propagated into the namespace objects 11852created by those tables. This would only present a problem for 11853tables that are unloaded at run-time, however. 11854 11855Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 11856type as the length parameter (instead of UINT32). 11857 11858Solved a long-standing problem where an ALREADY_EXISTS error 11859appears on various systems. This problem could happen when there 11860are multiple PCI_Config operation regions under a single PCI root 11861bus. This doesn't happen very frequently, but there are some 11862systems that do this in the ASL. 11863 11864Fixed a reported problem where the internal DeleteNode function 11865was incorrectly handling the case where a namespace node was the 11866first in the parent's child list, and had additional peers (not 11867the only child, but first in the list of children.) 11868 11869Code and Data Size: Current core subsystem library sizes are shown 11870below. These are the code and data sizes for the acpica.lib 11871produced by the Microsoft Visual C++ 6.0 compiler, and these 11872values do not include any ACPI driver or OSPM code. The debug 11873version of the code includes the debug output trace mechanism and 11874has a much larger code and data size. Note that these values will 11875vary depending on the efficiency of the compiler and the compiler 11876options used during generation. 11877 11878 Previous Release 11879 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 11880 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 11881 Current Release: 11882 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 11883 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 11884 11885 118862) Linux: 11887 11888Allow ":" in OS override string (Ducrot Bruno) 11889 11890Kobject fix (Greg KH) 11891 11892 118933 iASL Compiler/Disassembler: 11894 11895Fixed a problem in the generation of the C source code files (AML 11896is emitted in C source statements for BIOS inclusion) where the 11897Ascii dump that appears within a C comment at the end of each line 11898could cause a compile time error if the AML sequence happens to 11899have an open comment or close comment sequence embedded. 11900 11901 11902---------------------------------------- 1190324 April 2003. Summary of changes for version 20030424. 11904 11905 119061) ACPI CA Core Subsystem: 11907 11908Support for big-endian systems has been implemented. Most of the 11909support has been invisibly added behind big-endian versions of the 11910ACPI_MOVE_* macros. 11911 11912Fixed a problem in AcpiHwDisableGpeBlock() and 11913AcpiHwClearGpeBlock() where an incorrect offset was passed to the 11914low level hardware write routine. The offset parameter was 11915actually eliminated from the low level read/write routines because 11916they had become obsolete. 11917 11918Fixed a problem where a handler object was deleted twice during 11919the removal of a fixed event handler. 11920 11921 119222) Linux: 11923 11924A fix for SMP systems with link devices was contributed by 11925 11926Compaq's Dan Zink. 11927 11928(2.5) Return whether we handled the interrupt in our IRQ handler. 11929(Linux ISRs no longer return void, so we can propagate the handler 11930return value from the ACPI CA core back to the OS.) 11931 11932 11933 119343) Documentation: 11935 11936The ACPI CA Programmer Reference has been updated to reflect new 11937interfaces and changes to existing interfaces. 11938 11939---------------------------------------- 1194028 March 2003. Summary of changes for version 20030328. 11941 119421) ACPI CA Core Subsystem: 11943 11944The GPE Block Device support has been completed. New interfaces 11945are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 11946interfaces (enable, disable, clear, getstatus) have been split 11947into separate interfaces for Fixed Events and General Purpose 11948Events (GPEs) in order to support GPE Block Devices properly. 11949 11950Fixed a problem where the error message "Failed to acquire 11951semaphore" would appear during operations on the embedded 11952controller (EC). 11953 11954Code and Data Size: Current core subsystem library sizes are shown 11955below. These are the code and data sizes for the acpica.lib 11956produced by the Microsoft Visual C++ 6.0 compiler, and these 11957values do not include any ACPI driver or OSPM code. The debug 11958version of the code includes the debug output trace mechanism and 11959has a much larger code and data size. Note that these values will 11960vary depending on the efficiency of the compiler and the compiler 11961options used during generation. 11962 11963 Previous Release 11964 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 11965 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 11966 Current Release: 11967 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 11968 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 11969 11970 11971---------------------------------------- 1197228 February 2003. Summary of changes for version 20030228. 11973 11974 119751) ACPI CA Core Subsystem: 11976 11977The GPE handling and dispatch code has been completely overhauled 11978in preparation for support of GPE Block Devices (ID ACPI0006). 11979This affects internal data structures and code only; there should 11980be no differences visible externally. One new file has been 11981added, evgpeblk.c 11982 11983The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 11984fields that are used to determine the GPE block lengths. The 11985REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 11986structures are ignored. This is per the ACPI specification but it 11987isn't very clear. The full 256 Block 0/1 GPEs are now supported 11988(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 11989 11990In the SCI interrupt handler, removed the read of the PM1_CONTROL 11991register to look at the SCI_EN bit. On some machines, this read 11992causes an SMI event and greatly slows down SCI events. (This may 11993in fact be the cause of slow battery status response on some 11994systems.) 11995 11996Fixed a problem where a store of a NULL string to a package object 11997could cause the premature deletion of the object. This was seen 11998during execution of the battery _BIF method on some systems, 11999resulting in no battery data being returned. 12000 12001Added AcpiWalkResources interface to simplify parsing of resource 12002lists. 12003 12004Code and Data Size: Current core subsystem library sizes are shown 12005below. These are the code and data sizes for the acpica.lib 12006produced by the Microsoft Visual C++ 6.0 compiler, and these 12007values do not include any ACPI driver or OSPM code. The debug 12008version of the code includes the debug output trace mechanism and 12009has a much larger code and data size. Note that these values will 12010vary depending on the efficiency of the compiler and the compiler 12011options used during generation. 12012 12013 Previous Release 12014 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12015 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12016 Current Release: 12017 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12018 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12019 12020 120212) Linux 12022 12023S3 fixes (Ole Rohne) 12024 12025Update ACPI PHP driver with to use new acpi_walk_resource API 12026(Bjorn Helgaas) 12027 12028Add S4BIOS support (Pavel Machek) 12029 12030Map in entire table before performing checksum (John Stultz) 12031 12032Expand the mem= cmdline to allow the specification of reserved and 12033ACPI DATA blocks (Pavel Machek) 12034 12035Never use ACPI on VISWS 12036 12037Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 12038 12039Revert a change that allowed P_BLK lengths to be 4 or 5. This is 12040causing us to think that some systems support C2 when they really 12041don't. 12042 12043Do not count processor objects for non-present CPUs (Thanks to 12044Dominik Brodowski) 12045 12046 120473) iASL Compiler: 12048 12049Fixed a problem where ASL include files could not be found and 12050opened. 12051 12052Added support for the _PDC reserved name. 12053 12054 12055---------------------------------------- 1205622 January 2003. Summary of changes for version 20030122. 12057 12058 120591) ACPI CA Core Subsystem: 12060 12061Added a check for constructs of the form: Store (Local0, Local0) 12062where Local0 is not initialized. Apparently, some BIOS 12063programmers believe that this is a NOOP. Since this store doesn't 12064do anything anyway, the new prototype behavior will ignore this 12065error. This is a case where we can relax the strict checking in 12066the interpreter in the name of compatibility. 12067 12068 120692) Linux 12070 12071The AcpiSrc Source Conversion Utility has been released with the 12072Linux package for the first time. This is the utility that is 12073used to convert the ACPI CA base source code to the Linux version. 12074 12075(Both) Handle P_BLK lengths shorter than 6 more gracefully 12076 12077(Both) Move more headers to include/acpi, and delete an unused 12078header. 12079 12080(Both) Move drivers/acpi/include directory to include/acpi 12081 12082(Both) Boot functions don't use cmdline, so don't pass it around 12083 12084(Both) Remove include of unused header (Adrian Bunk) 12085 12086(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 12087the 12088former now also includes the latter, acpiphp.h only needs the one, 12089now. 12090 12091(2.5) Make it possible to select method of bios restoring after S3 12092resume. [=> no more ugly ifdefs] (Pavel Machek) 12093 12094(2.5) Make proc write interfaces work (Pavel Machek) 12095 12096(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 12097 12098(2.5) Break out ACPI Perf code into its own module, under cpufreq 12099(Dominik Brodowski) 12100 12101(2.4) S4BIOS support (Ducrot Bruno) 12102 12103(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 12104Visinoni) 12105 12106 121073) iASL Compiler: 12108 12109Added support to disassemble SSDT and PSDTs. 12110 12111Implemented support to obtain SSDTs from the Windows registry if 12112available. 12113 12114 12115---------------------------------------- 1211609 January 2003. Summary of changes for version 20030109. 12117 121181) ACPI CA Core Subsystem: 12119 12120Changed the behavior of the internal Buffer-to-String conversion 12121function. The current ACPI specification states that the contents 12122of the buffer are "converted to a string of two-character 12123hexadecimal numbers, each separated by a space". Unfortunately, 12124this definition is not backwards compatible with existing ACPI 1.0 12125implementations (although the behavior was not defined in the ACPI 121261.0 specification). The new behavior simply copies data from the 12127buffer to the string until a null character is found or the end of 12128the buffer is reached. The new String object is always null 12129terminated. This problem was seen during the generation of _BIF 12130battery data where incorrect strings were returned for battery 12131type, etc. This will also require an errata to the ACPI 12132specification. 12133 12134Renamed all instances of NATIVE_UINT and NATIVE_INT to 12135ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 12136 12137Copyright in all module headers (both Linux and non-Linux) has be 12138updated to 2003. 12139 12140Code and Data Size: Current core subsystem library sizes are shown 12141below. These are the code and data sizes for the acpica.lib 12142produced by the Microsoft Visual C++ 6.0 compiler, and these 12143values do not include any ACPI driver or OSPM code. The debug 12144version of the code includes the debug output trace mechanism and 12145has a much larger code and data size. Note that these values will 12146vary depending on the efficiency of the compiler and the compiler 12147options used during generation. 12148 12149 Previous Release 12150 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12151 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12152 Current Release: 12153 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12154 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12155 12156 121572) Linux 12158 12159Fixed an oops on module insertion/removal (Matthew Tippett) 12160 12161(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 12162 12163(2.5) Replace pr_debug (Randy Dunlap) 12164 12165(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 12166 12167(Both) Eliminate spawning of thread from timer callback, in favor 12168of schedule_work() 12169 12170(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 12171 12172(Both) Added define for Fixed Function HW region (Matthew Wilcox) 12173 12174(Both) Add missing statics to button.c (Pavel Machek) 12175 12176Several changes have been made to the source code translation 12177utility that generates the Linux Code in order to make the code 12178more "Linux-like": 12179 12180All typedefs on structs and unions have been removed in keeping 12181with the Linux coding style. 12182 12183Removed the non-Linux SourceSafe module revision number from each 12184module header. 12185 12186Completed major overhaul of symbols to be lowercased for linux. 12187Doubled the number of symbols that are lowercased. 12188 12189Fixed a problem where identifiers within procedure headers and 12190within quotes were not fully lower cased (they were left with a 12191starting capital.) 12192 12193Some C macros whose only purpose is to allow the generation of 16- 12194bit code are now completely removed in the Linux code, increasing 12195readability and maintainability. 12196 12197---------------------------------------- 12198 1219912 December 2002. Summary of changes for version 20021212. 12200 12201 122021) ACPI CA Core Subsystem: 12203 12204Fixed a problem where the creation of a zero-length AML Buffer 12205would cause a fault. 12206 12207Fixed a problem where a Buffer object that pointed to a static AML 12208buffer (in an ACPI table) could inadvertently be deleted, causing 12209memory corruption. 12210 12211Fixed a problem where a user buffer (passed in to the external 12212ACPI CA interfaces) could be overwritten if the buffer was too 12213small to complete the operation, causing memory corruption. 12214 12215Fixed a problem in the Buffer-to-String conversion code where a 12216string of length one was always returned, regardless of the size 12217of the input Buffer object. 12218 12219Removed the NATIVE_CHAR data type across the entire source due to 12220lack of need and lack of consistent use. 12221 12222Code and Data Size: Current core subsystem library sizes are shown 12223below. These are the code and data sizes for the acpica.lib 12224produced by the Microsoft Visual C++ 6.0 compiler, and these 12225values do not include any ACPI driver or OSPM code. The debug 12226version of the code includes the debug output trace mechanism and 12227has a much larger code and data size. Note that these values will 12228vary depending on the efficiency of the compiler and the compiler 12229options used during generation. 12230 12231 Previous Release 12232 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12233 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12234 Current Release: 12235 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12236 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12237 12238 12239---------------------------------------- 1224005 December 2002. Summary of changes for version 20021205. 12241 122421) ACPI CA Core Subsystem: 12243 12244Fixed a problem where a store to a String or Buffer object could 12245cause corruption of the DSDT if the object type being stored was 12246the same as the target object type and the length of the object 12247being stored was equal to or smaller than the original (existing) 12248target object. This was seen to cause corruption of battery _BIF 12249buffers if the _BIF method modified the buffer on the fly. 12250 12251Fixed a problem where an internal error was generated if a control 12252method invocation was used in an OperationRegion, Buffer, or 12253Package declaration. This was caused by the deferred parsing of 12254the control method and thus the deferred creation of the internal 12255method object. The solution to this problem was to create the 12256internal method object at the moment the method is encountered in 12257the first pass - so that subsequent references to the method will 12258able to obtain the required parameter count and thus properly 12259parse the method invocation. This problem presented itself as an 12260AE_AML_INTERNAL during the pass 1 parse phase during table load. 12261 12262Fixed a problem where the internal String object copy routine did 12263not always allocate sufficient memory for the target String object 12264and caused memory corruption. This problem was seen to cause 12265"Allocation already present in list!" errors as memory allocation 12266became corrupted. 12267 12268Implemented a new function for the evaluation of namespace objects 12269that allows the specification of the allowable return object 12270types. This simplifies a lot of code that checks for a return 12271object of one or more specific objects returned from the 12272evaluation (such as _STA, etc.) This may become and external 12273function if it would be useful to ACPI-related drivers. 12274 12275Completed another round of prefixing #defines with "ACPI_" for 12276clarity. 12277 12278Completed additional code restructuring to allow more modular 12279linking for iASL compiler and AcpiExec. Several files were split 12280creating new files. New files: nsparse.c dsinit.c evgpe.c 12281 12282Implemented an abort mechanism to terminate an executing control 12283method via the AML debugger. This feature is useful for debugging 12284control methods that depend (wait) for specific hardware 12285responses. 12286 12287Code and Data Size: Current core subsystem library sizes are shown 12288below. These are the code and data sizes for the acpica.lib 12289produced by the Microsoft Visual C++ 6.0 compiler, and these 12290values do not include any ACPI driver or OSPM code. The debug 12291version of the code includes the debug output trace mechanism and 12292has a much larger code and data size. Note that these values will 12293vary depending on the efficiency of the compiler and the compiler 12294options used during generation. 12295 12296 Previous Release 12297 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12298 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12299 Current Release: 12300 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12301 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12302 12303 123042) iASL Compiler/Disassembler 12305 12306Fixed a compiler code generation problem for "Interrupt" Resource 12307Descriptors. If specified in the ASL, the optional "Resource 12308Source Index" and "Resource Source" fields were not inserted into 12309the correct location within the AML resource descriptor, creating 12310an invalid descriptor. 12311 12312Fixed a disassembler problem for "Interrupt" resource descriptors. 12313The optional "Resource Source Index" and "Resource Source" fields 12314were ignored. 12315 12316 12317---------------------------------------- 1231822 November 2002. Summary of changes for version 20021122. 12319 12320 123211) ACPI CA Core Subsystem: 12322 12323Fixed a reported problem where an object stored to a Method Local 12324or Arg was not copied to a new object during the store - the 12325object pointer was simply copied to the Local/Arg. This caused 12326all subsequent operations on the Local/Arg to also affect the 12327original source of the store operation. 12328 12329Fixed a problem where a store operation to a Method Local or Arg 12330was not completed properly if the Local/Arg contained a reference 12331(from RefOf) to a named field. The general-purpose store-to- 12332namespace-node code is now used so that this case is handled 12333automatically. 12334 12335Fixed a problem where the internal object copy routine would cause 12336a protection fault if the object being copied was a Package and 12337contained either 1) a NULL package element or 2) a nested sub- 12338package. 12339 12340Fixed a problem with the GPE initialization that resulted from an 12341ambiguity in the ACPI specification. One section of the 12342specification states that both the address and length of the GPE 12343block must be zero if the block is not supported. Another section 12344implies that only the address need be zero if the block is not 12345supported. The code has been changed so that both the address and 12346the length must be non-zero to indicate a valid GPE block (i.e., 12347if either the address or the length is zero, the GPE block is 12348invalid.) 12349 12350Code and Data Size: Current core subsystem library sizes are shown 12351below. These are the code and data sizes for the acpica.lib 12352produced by the Microsoft Visual C++ 6.0 compiler, and these 12353values do not include any ACPI driver or OSPM code. The debug 12354version of the code includes the debug output trace mechanism and 12355has a much larger code and data size. Note that these values will 12356vary depending on the efficiency of the compiler and the compiler 12357options used during generation. 12358 12359 Previous Release 12360 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12361 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12362 Current Release: 12363 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12364 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12365 12366 123672) Linux 12368 12369Cleaned up EC driver. Exported an external EC read/write 12370interface. By going through this, other drivers (most notably 12371sonypi) will be able to serialize access to the EC. 12372 12373 123743) iASL Compiler/Disassembler 12375 12376Implemented support to optionally generate include files for both 12377ASM and C (the -i switch). This simplifies BIOS development by 12378automatically creating include files that contain external 12379declarations for the symbols that are created within the 12380 12381(optionally generated) ASM and C AML source files. 12382 12383 12384---------------------------------------- 1238515 November 2002. Summary of changes for version 20021115. 12386 123871) ACPI CA Core Subsystem: 12388 12389Fixed a memory leak problem where an error during resolution of 12390 12391method arguments during a method invocation from another method 12392failed to cleanup properly by deleting all successfully resolved 12393argument objects. 12394 12395Fixed a problem where the target of the Index() operator was not 12396correctly constructed if the source object was a package. This 12397problem has not been detected because the use of a target operand 12398with Index() is very rare. 12399 12400Fixed a problem with the Index() operator where an attempt was 12401made to delete the operand objects twice. 12402 12403Fixed a problem where an attempt was made to delete an operand 12404twice during execution of the CondRefOf() operator if the target 12405did not exist. 12406 12407Implemented the first of perhaps several internal create object 12408functions that create and initialize a specific object type. This 12409consolidates duplicated code wherever the object is created, thus 12410shrinking the size of the subsystem. 12411 12412Implemented improved debug/error messages for errors that occur 12413during nested method invocations. All executing method pathnames 12414are displayed (with the error) as the call stack is unwound - thus 12415simplifying debug. 12416 12417Fixed a problem introduced in the 10/02 release that caused 12418premature deletion of a buffer object if a buffer was used as an 12419ASL operand where an integer operand is required (Thus causing an 12420implicit object conversion from Buffer to Integer.) The change in 12421the 10/02 release was attempting to fix a memory leak (albeit 12422incorrectly.) 12423 12424Code and Data Size: Current core subsystem library sizes are shown 12425below. These are the code and data sizes for the acpica.lib 12426produced by the Microsoft Visual C++ 6.0 compiler, and these 12427values do not include any ACPI driver or OSPM code. The debug 12428version of the code includes the debug output trace mechanism and 12429has a much larger code and data size. Note that these values will 12430vary depending on the efficiency of the compiler and the compiler 12431options used during generation. 12432 12433 Previous Release 12434 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 12435 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 12436 Current Release: 12437 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12438 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12439 12440 124412) Linux 12442 12443Changed the implementation of the ACPI semaphores to use down() 12444instead of down_interruptable(). It is important that the 12445execution of ACPI control methods not be interrupted by signals. 12446Methods must run to completion, or the system may be left in an 12447unknown/unstable state. 12448 12449Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 12450(Shawn Starr) 12451 12452 124533) iASL Compiler/Disassembler 12454 12455 12456Changed the default location of output files. All output files 12457are now placed in the current directory by default instead of in 12458the directory of the source file. This change may affect some 12459existing makefiles, but it brings the behavior of the compiler in 12460line with other similar tools. The location of the output files 12461can be overridden with the -p command line switch. 12462 12463 12464---------------------------------------- 1246511 November 2002. Summary of changes for version 20021111. 12466 12467 124680) ACPI Specification 2.0B is released and is now available at: 12469http://www.acpi.info/index.html 12470 12471 124721) ACPI CA Core Subsystem: 12473 12474Implemented support for the ACPI 2.0 SMBus Operation Regions. 12475This includes the early detection and handoff of the request to 12476the SMBus region handler (avoiding all of the complex field 12477support code), and support for the bidirectional return packet 12478from an SMBus write operation. This paves the way for the 12479development of SMBus drivers in each host operating system. 12480 12481Fixed a problem where the semaphore WAIT_FOREVER constant was 12482defined as 32 bits, but must be 16 bits according to the ACPI 12483specification. This had the side effect of causing ASL 12484Mutex/Event timeouts even though the ASL code requested a wait 12485forever. Changed all internal references to the ACPI timeout 12486parameter to 16 bits to prevent future problems. Changed the name 12487of WAIT_FOREVER to ACPI_WAIT_FOREVER. 12488 12489Code and Data Size: Current core subsystem library sizes are shown 12490below. These are the code and data sizes for the acpica.lib 12491produced by the Microsoft Visual C++ 6.0 compiler, and these 12492values do not include any ACPI driver or OSPM code. The debug 12493version of the code includes the debug output trace mechanism and 12494has a much larger code and data size. Note that these values will 12495vary depending on the efficiency of the compiler and the compiler 12496options used during generation. 12497 12498 Previous Release 12499 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12500 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 12501 Current Release: 12502 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 12503 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 12504 12505 125062) Linux 12507 12508Module loading/unloading fixes (John Cagle) 12509 12510 125113) iASL Compiler/Disassembler 12512 12513Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 12514 12515Implemented support for the disassembly of all SMBus protocol 12516keywords (SMBQuick, SMBWord, etc.) 12517 12518---------------------------------------- 1251901 November 2002. Summary of changes for version 20021101. 12520 12521 125221) ACPI CA Core Subsystem: 12523 12524Fixed a problem where platforms that have a GPE1 block but no GPE0 12525block were not handled correctly. This resulted in a "GPE 12526overlap" error message. GPE0 is no longer required. 12527 12528Removed code added in the previous release that inserted nodes 12529into the namespace in alphabetical order. This caused some side- 12530effects on various machines. The root cause of the problem is 12531still under investigation since in theory, the internal ordering 12532of the namespace nodes should not matter. 12533 12534 12535Enhanced error reporting for the case where a named object is not 12536found during control method execution. The full ACPI namepath 12537(name reference) of the object that was not found is displayed in 12538this case. 12539 12540Note: as a result of the overhaul of the namespace object types in 12541the previous release, the namespace nodes for the predefined 12542scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 12543instead of ACPI_TYPE_ANY. This simplifies the namespace 12544management code but may affect code that walks the namespace tree 12545looking for specific object types. 12546 12547Code and Data Size: Current core subsystem library sizes are shown 12548below. These are the code and data sizes for the acpica.lib 12549produced by the Microsoft Visual C++ 6.0 compiler, and these 12550values do not include any ACPI driver or OSPM code. The debug 12551version of the code includes the debug output trace mechanism and 12552has a much larger code and data size. Note that these values will 12553vary depending on the efficiency of the compiler and the compiler 12554options used during generation. 12555 12556 Previous Release 12557 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 12558 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 12559 Current Release: 12560 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12561 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 12562 12563 125642) Linux 12565 12566Fixed a problem introduced in the previous release where the 12567Processor and Thermal objects were not recognized and installed in 12568/proc. This was related to the scope type change described above. 12569 12570 125713) iASL Compiler/Disassembler 12572 12573Implemented the -g option to get all of the required ACPI tables 12574from the registry and save them to files (Windows version of the 12575compiler only.) The required tables are the FADT, FACS, and DSDT. 12576 12577Added ACPI table checksum validation during table disassembly in 12578order to catch corrupted tables. 12579 12580 12581---------------------------------------- 1258222 October 2002. Summary of changes for version 20021022. 12583 125841) ACPI CA Core Subsystem: 12585 12586Implemented a restriction on the Scope operator that the target 12587must already exist in the namespace at the time the operator is 12588encountered (during table load or method execution). In other 12589words, forward references are not allowed and Scope() cannot 12590create a new object. This changes the previous behavior where the 12591interpreter would create the name if not found. This new behavior 12592correctly enables the search-to-root algorithm during namespace 12593lookup of the target name. Because of this upsearch, this fixes 12594the known Compaq _SB_.OKEC problem and makes both the AML 12595interpreter and iASL compiler compatible with other ACPI 12596implementations. 12597 12598Completed a major overhaul of the internal ACPI object types for 12599the ACPI Namespace and the associated operand objects. Many of 12600these types had become obsolete with the introduction of the two- 12601pass namespace load. This cleanup simplifies the code and makes 12602the entire namespace load mechanism much clearer and easier to 12603understand. 12604 12605Improved debug output for tracking scope opening/closing to help 12606diagnose scoping issues. The old scope name as well as the new 12607scope name are displayed. Also improved error messages for 12608problems with ASL Mutex objects and error messages for GPE 12609problems. 12610 12611Cleaned up the namespace dump code, removed obsolete code. 12612 12613All string output (for all namespace/object dumps) now uses the 12614common ACPI string output procedure which handles escapes properly 12615and does not emit non-printable characters. 12616 12617Fixed some issues with constants in the 64-bit version of the 12618local C library (utclib.c) 12619 12620 126212) Linux 12622 12623EC Driver: No longer attempts to acquire the Global Lock at 12624interrupt level. 12625 12626 126273) iASL Compiler/Disassembler 12628 12629Implemented ACPI 2.0B grammar change that disallows all Type 1 and 126302 opcodes outside of a control method. This means that the 12631"executable" operators (versus the "namespace" operators) cannot 12632be used at the table level; they can only be used within a control 12633method. 12634 12635Implemented the restriction on the Scope() operator where the 12636target must already exist in the namespace at the time the 12637operator is encountered (during ASL compilation). In other words, 12638forward references are not allowed and Scope() cannot create a new 12639object. This makes the iASL compiler compatible with other ACPI 12640implementations and makes the Scope() implementation adhere to the 12641ACPI specification. 12642 12643Fixed a problem where namepath optimization for the Alias operator 12644was optimizing the wrong path (of the two namepaths.) This caused 12645a "Missing alias link" error message. 12646 12647Fixed a problem where an "unknown reserved name" warning could be 12648incorrectly generated for names like "_SB" when the trailing 12649underscore is not used in the original ASL. 12650 12651Fixed a problem where the reserved name check did not handle 12652NamePaths with multiple NameSegs correctly. The first nameseg of 12653the NamePath was examined instead of the last NameSeg. 12654 12655 12656---------------------------------------- 12657 1265802 October 2002. Summary of changes for this release. 12659 12660 126611) ACPI CA Core Subsystem version 20021002: 12662 12663Fixed a problem where a store/copy of a string to an existing 12664string did not always set the string length properly in the String 12665object. 12666 12667Fixed a reported problem with the ToString operator where the 12668behavior was identical to the ToHexString operator instead of just 12669simply converting a raw buffer to a string data type. 12670 12671Fixed a problem where CopyObject and the other "explicit" 12672conversion operators were not updating the internal namespace node 12673type as part of the store operation. 12674 12675Fixed a memory leak during implicit source operand conversion 12676where the original object was not deleted if it was converted to a 12677new object of a different type. 12678 12679Enhanced error messages for all problems associated with namespace 12680lookups. Common procedure generates and prints the lookup name as 12681well as the formatted status. 12682 12683Completed implementation of a new design for the Alias support 12684within the namespace. The existing design did not handle the case 12685where a new object was assigned to one of the two names due to the 12686use of an explicit conversion operator, resulting in the two names 12687pointing to two different objects. The new design simply points 12688the Alias name to the original name node - not to the object. 12689This results in a level of indirection that must be handled in the 12690name resolution mechanism. 12691 12692Code and Data Size: Current core subsystem library sizes are shown 12693below. These are the code and data sizes for the acpica.lib 12694produced by the Microsoft Visual C++ 6.0 compiler, and these 12695values do not include any ACPI driver or OSPM code. The debug 12696version of the code includes the debug output trace mechanism and 12697has a larger code and data size. Note that these values will vary 12698depending on the efficiency of the compiler and the compiler 12699options used during generation. 12700 12701 Previous Release 12702 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 12703 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 12704 Current Release: 12705 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 12706 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 12707 12708 127092) Linux 12710 12711Initialize thermal driver's timer before it is used. (Knut 12712Neumann) 12713 12714Allow handling negative celsius values. (Kochi Takayoshi) 12715 12716Fix thermal management and make trip points. R/W (Pavel Machek) 12717 12718Fix /proc/acpi/sleep. (P. Christeas) 12719 12720IA64 fixes. (David Mosberger) 12721 12722Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 12723 12724Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 12725Brodowski) 12726 12727 127283) iASL Compiler/Disassembler 12729 12730Clarified some warning/error messages. 12731 12732 12733---------------------------------------- 1273418 September 2002. Summary of changes for this release. 12735 12736 127371) ACPI CA Core Subsystem version 20020918: 12738 12739Fixed a reported problem with reference chaining (via the Index() 12740and RefOf() operators) in the ObjectType() and SizeOf() operators. 12741The definition of these operators includes the dereferencing of 12742all chained references to return information on the base object. 12743 12744Fixed a problem with stores to indexed package elements - the 12745existing code would not complete the store if an "implicit 12746conversion" was not performed. In other words, if the existing 12747object (package element) was to be replaced completely, the code 12748didn't handle this case. 12749 12750Relaxed typechecking on the ASL "Scope" operator to allow the 12751target name to refer to an object of type Integer, String, or 12752Buffer, in addition to the scoping object types (Device, 12753predefined Scopes, Processor, PowerResource, and ThermalZone.) 12754This allows existing AML code that has workarounds for a bug in 12755Windows to function properly. A warning is issued, however. This 12756affects both the AML interpreter and the iASL compiler. Below is 12757an example of this type of ASL code: 12758 12759 Name(DEB,0x00) 12760 Scope(DEB) 12761 { 12762 12763Fixed some reported problems with 64-bit integer support in the 12764local implementation of C library functions (clib.c) 12765 12766 127672) Linux 12768 12769Use ACPI fix map region instead of IOAPIC region, since it is 12770undefined in non-SMP. 12771 12772Ensure that the SCI has the proper polarity and trigger, even on 12773systems that do not have an interrupt override entry in the MADT. 12774 127752.5 big driver reorganization (Pat Mochel) 12776 12777Use early table mapping code from acpitable.c (Andi Kleen) 12778 12779New blacklist entries (Andi Kleen) 12780 12781Blacklist improvements. Split blacklist code out into a separate 12782file. Move checking the blacklist to very early. Previously, we 12783would use ACPI tables, and then halfway through init, check the 12784blacklist -- too late. Now, it's early enough to completely fall- 12785back to non-ACPI. 12786 12787 127883) iASL Compiler/Disassembler version 20020918: 12789 12790Fixed a problem where the typechecking code didn't know that an 12791alias could point to a method. In other words, aliases were not 12792being dereferenced during typechecking. 12793 12794 12795---------------------------------------- 1279629 August 2002. Summary of changes for this release. 12797 127981) ACPI CA Core Subsystem Version 20020829: 12799 12800If the target of a Scope() operator already exists, it must be an 12801object type that actually opens a scope -- such as a Device, 12802Method, Scope, etc. This is a fatal runtime error. Similar error 12803check has been added to the iASL compiler also. 12804 12805Tightened up the namespace load to disallow multiple names in the 12806same scope. This previously was allowed if both objects were of 12807the same type. (i.e., a lookup was the same as entering a new 12808name). 12809 12810 128112) Linux 12812 12813Ensure that the ACPI interrupt has the proper trigger and 12814polarity. 12815 12816local_irq_disable is extraneous. (Matthew Wilcox) 12817 12818Make "acpi=off" actually do what it says, and not use the ACPI 12819interpreter *or* the tables. 12820 12821Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 12822Takayoshi) 12823 12824 128253) iASL Compiler/Disassembler Version 20020829: 12826 12827Implemented namepath optimization for name declarations. For 12828example, a declaration like "Method (\_SB_.ABCD)" would get 12829optimized to "Method (ABCD)" if the declaration is within the 12830\_SB_ scope. This optimization is in addition to the named 12831reference path optimization first released in the previous 12832version. This would seem to complete all possible optimizations 12833for namepaths within the ASL/AML. 12834 12835If the target of a Scope() operator already exists, it must be an 12836object type that actually opens a scope -- such as a Device, 12837Method, Scope, etc. 12838 12839Implemented a check and warning for unreachable code in the same 12840block below a Return() statement. 12841 12842Fixed a problem where the listing file was not generated if the 12843compiler aborted if the maximum error count was exceeded (200). 12844 12845Fixed a problem where the typechecking of method return values was 12846broken. This includes the check for a return value when the 12847method is invoked as a TermArg (a return value is expected.) 12848 12849Fixed a reported problem where EOF conditions during a quoted 12850string or comment caused a fault. 12851 12852 12853---------------------------------------- 1285415 August 2002. Summary of changes for this release. 12855 128561) ACPI CA Core Subsystem Version 20020815: 12857 12858Fixed a reported problem where a Store to a method argument that 12859contains a reference did not perform the indirect store correctly. 12860This problem was created during the conversion to the new 12861reference object model - the indirect store to a method argument 12862code was not updated to reflect the new model. 12863 12864Reworked the ACPI mode change code to better conform to ACPI 2.0, 12865handle corner cases, and improve code legibility (Kochi Takayoshi) 12866 12867Fixed a problem with the pathname parsing for the carat (^) 12868prefix. The heavy use of the carat operator by the new namepath 12869optimization in the iASL compiler uncovered a problem with the AML 12870interpreter handling of this prefix. In the case where one or 12871more carats precede a single nameseg, the nameseg was treated as 12872standalone and the search rule (to root) was inadvertently 12873applied. This could cause both the iASL compiler and the 12874interpreter to find the wrong object or to miss the error that 12875should occur if the object does not exist at that exact pathname. 12876 12877Found and fixed the problem where the HP Pavilion DSDT would not 12878load. This was a relatively minor tweak to the table loading code 12879(a problem caused by the unexpected encounter with a method 12880invocation not within a control method), but it does not solve the 12881overall issue of the execution of AML code at the table level. 12882This investigation is still ongoing. 12883 12884Code and Data Size: Current core subsystem library sizes are shown 12885below. These are the code and data sizes for the acpica.lib 12886produced by the Microsoft Visual C++ 6.0 compiler, and these 12887values do not include any ACPI driver or OSPM code. The debug 12888version of the code includes the debug output trace mechanism and 12889has a larger code and data size. Note that these values will vary 12890depending on the efficiency of the compiler and the compiler 12891options used during generation. 12892 12893 Previous Release 12894 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 12895 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 12896 Current Release: 12897 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 12898 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 12899 12900 129012) Linux 12902 12903Remove redundant slab.h include (Brad Hards) 12904 12905Fix several bugs in thermal.c (Herbert Nachtnebel) 12906 12907Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 12908 12909Change acpi_system_suspend to use updated irq functions (Pavel 12910Machek) 12911 12912Export acpi_get_firmware_table (Matthew Wilcox) 12913 12914Use proper root proc entry for ACPI (Kochi Takayoshi) 12915 12916Fix early-boot table parsing (Bjorn Helgaas) 12917 12918 129193) iASL Compiler/Disassembler 12920 12921Reworked the compiler options to make them more consistent and to 12922use two-letter options where appropriate. We were running out of 12923sensible letters. This may break some makefiles, so check the 12924current options list by invoking the compiler with no parameters. 12925 12926Completed the design and implementation of the ASL namepath 12927optimization option for the compiler. This option optimizes all 12928references to named objects to the shortest possible path. The 12929first attempt tries to utilize a single nameseg (4 characters) and 12930the "search-to-root" algorithm used by the interpreter. If that 12931cannot be used (because either the name is not in the search path 12932or there is a conflict with another object with the same name), 12933the pathname is optimized using the carat prefix (usually a 12934shorter string than specifying the entire path from the root.) 12935 12936Implemented support to obtain the DSDT from the Windows registry 12937(when the disassembly option is specified with no input file). 12938Added this code as the implementation for AcpiOsTableOverride in 12939the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 12940utility) to scan memory for the DSDT to the AcpiOsTableOverride 12941function in the DOS OSL to make the disassembler truly OS 12942independent. 12943 12944Implemented a new option to disassemble and compile in one step. 12945When used without an input filename, this option will grab the 12946DSDT from the local machine, disassemble it, and compile it in one 12947step. 12948 12949Added a warning message for invalid escapes (a backslash followed 12950by any character other than the allowable escapes). This catches 12951the quoted string error "\_SB_" (which should be "\\_SB_" ). 12952 12953Also, there are numerous instances in the ACPI specification where 12954this error occurs. 12955 12956Added a compiler option to disable all optimizations. This is 12957basically the "compatibility mode" because by using this option, 12958the AML code will come out exactly the same as other ASL 12959compilers. 12960 12961Added error messages for incorrectly ordered dependent resource 12962functions. This includes: missing EndDependentFn macro at end of 12963dependent resource list, nested dependent function macros (both 12964start and end), and missing StartDependentFn macro. These are 12965common errors that should be caught at compile time. 12966 12967Implemented _OSI support for the disassembler and compiler. _OSI 12968must be included in the namespace for proper disassembly (because 12969the disassembler must know the number of arguments.) 12970 12971Added an "optimization" message type that is optional (off by 12972default). This message is used for all optimizations - including 12973constant folding, integer optimization, and namepath optimization. 12974 12975---------------------------------------- 1297625 July 2002. Summary of changes for this release. 12977 12978 129791) ACPI CA Core Subsystem Version 20020725: 12980 12981The AML Disassembler has been enhanced to produce compilable ASL 12982code and has been integrated into the iASL compiler (see below) as 12983well as the single-step disassembly for the AML debugger and the 12984disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 12985resource templates and macros are fully supported. The 12986disassembler has been tested on over 30 different AML files, 12987producing identical AML when the resulting disassembled ASL file 12988is recompiled with the same ASL compiler. 12989 12990Modified the Resource Manager to allow zero interrupts and zero 12991dma channels during the GetCurrentResources call. This was 12992causing problems on some platforms. 12993 12994Added the AcpiOsRedirectOutput interface to the OSL to simplify 12995output redirection for the AcpiOsPrintf and AcpiOsVprintf 12996interfaces. 12997 12998Code and Data Size: Current core subsystem library sizes are shown 12999below. These are the code and data sizes for the acpica.lib 13000produced by the Microsoft Visual C++ 6.0 compiler, and these 13001values do not include any ACPI driver or OSPM code. The debug 13002version of the code includes the debug output trace mechanism and 13003has a larger code and data size. Note that these values will vary 13004depending on the efficiency of the compiler and the compiler 13005options used during generation. 13006 13007 Previous Release 13008 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13009 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13010 Current Release: 13011 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13012 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13013 13014 130152) Linux 13016 13017Fixed a panic in the EC driver (Dominik Brodowski) 13018 13019Implemented checksum of the R/XSDT itself during Linux table scan 13020(Richard Schaal) 13021 13022 130233) iASL compiler 13024 13025The AML disassembler is integrated into the compiler. The "-d" 13026option invokes the disassembler to completely disassemble an 13027input AML file, producing as output a text ASL file with the 13028extension ".dsl" (to avoid name collisions with existing .asl 13029source files.) A future enhancement will allow the disassembler 13030to obtain the BIOS DSDT from the registry under Windows. 13031 13032Fixed a problem with the VendorShort and VendorLong resource 13033descriptors where an invalid AML sequence was created. 13034 13035Implemented a fix for BufferData term in the ASL parser. It was 13036inadvertently defined twice, allowing invalid syntax to pass and 13037causing reduction conflicts. 13038 13039Fixed a problem where the Ones opcode could get converted to a 13040value of zero if "Ones" was used where a byte, word or dword value 13041was expected. The 64-bit value is now truncated to the correct 13042size with the correct value. 13043 13044 13045 13046---------------------------------------- 1304702 July 2002. Summary of changes for this release. 13048 13049 130501) ACPI CA Core Subsystem Version 20020702: 13051 13052The Table Manager code has been restructured to add several new 13053features. Tables that are not required by the core subsystem 13054(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 13055validated in any way and are returned from AcpiGetFirmwareTable if 13056requested. The AcpiOsTableOverride interface is now called for 13057each table that is loaded by the subsystem in order to allow the 13058host to override any table it chooses. Previously, only the DSDT 13059could be overridden. Added one new files, tbrsdt.c and 13060tbgetall.c. 13061 13062Fixed a problem with the conversion of internal package objects to 13063external objects (when a package is returned from a control 13064method.) The return buffer length was set to zero instead of the 13065proper length of the package object. 13066 13067Fixed a reported problem with the use of the RefOf and DeRefOf 13068operators when passing reference arguments to control methods. A 13069new type of Reference object is used internally for references 13070produced by the RefOf operator. 13071 13072Added additional error messages in the Resource Manager to explain 13073AE_BAD_DATA errors when they occur during resource parsing. 13074 13075Split the AcpiEnableSubsystem into two primitives to enable a 13076finer granularity initialization sequence. These two calls should 13077be called in this order: AcpiEnableSubsystem (flags), 13078AcpiInitializeObjects (flags). The flags parameter remains the 13079same. 13080 13081 130822) Linux 13083 13084Updated the ACPI utilities module to understand the new style of 13085fully resolved package objects that are now returned from the core 13086subsystem. This eliminates errors of the form: 13087 13088 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 13089 acpi_utils-0430 [145] acpi_evaluate_reference: 13090 Invalid element in package (not a device reference) 13091 13092The method evaluation utility uses the new buffer allocation 13093scheme instead of calling AcpiEvaluate Object twice. 13094 13095Added support for ECDT. This allows the use of the Embedded 13096 13097Controller before the namespace has been fully initialized, which 13098is necessary for ACPI 2.0 support, and for some laptops to 13099initialize properly. (Laptops using ECDT are still rare, so only 13100limited testing was performed of the added functionality.) 13101 13102Fixed memory leaks in the EC driver. 13103 13104Eliminated a brittle code structure in acpi_bus_init(). 13105 13106Eliminated the acpi_evaluate() helper function in utils.c. It is 13107no longer needed since acpi_evaluate_object can optionally 13108allocate memory for the return object. 13109 13110Implemented fix for keyboard hang when getting battery readings on 13111some systems (Stephen White) 13112 13113PCI IRQ routing update (Dominik Brodowski) 13114 13115Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 13116support 13117 13118---------------------------------------- 1311911 June 2002. Summary of changes for this release. 13120 13121 131221) ACPI CA Core Subsystem Version 20020611: 13123 13124Fixed a reported problem where constants such as Zero and One 13125appearing within _PRT packages were not handled correctly within 13126the resource manager code. Originally reported against the ASL 13127compiler because the code generator now optimizes integers to 13128their minimal AML representation (i.e. AML constants if possible.) 13129The _PRT code now handles all AML constant opcodes correctly 13130(Zero, One, Ones, Revision). 13131 13132Fixed a problem with the Concatenate operator in the AML 13133interpreter where a buffer result object was incorrectly marked as 13134not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 13135 13136All package sub-objects are now fully resolved before they are 13137returned from the external ACPI interfaces. This means that name 13138strings are resolved to object handles, and constant operators 13139(Zero, One, Ones, Revision) are resolved to Integers. 13140 13141Implemented immediate resolution of the AML Constant opcodes 13142(Zero, One, Ones, Revision) to Integer objects upon detection 13143within the AML stream. This has simplified and reduced the 13144generated code size of the subsystem by eliminating about 10 13145switch statements for these constants (which previously were 13146contained in Reference objects.) The complicating issues are that 13147the Zero opcode is used as a "placeholder" for unspecified 13148optional target operands and stores to constants are defined to be 13149no-ops. 13150 13151Code and Data Size: Current core subsystem library sizes are shown 13152below. These are the code and data sizes for the acpica.lib 13153produced by the Microsoft Visual C++ 6.0 compiler, and these 13154values do not include any ACPI driver or OSPM code. The debug 13155version of the code includes the debug output trace mechanism and 13156has a larger code and data size. Note that these values will vary 13157depending on the efficiency of the compiler and the compiler 13158options used during generation. 13159 13160 Previous Release 13161 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13162 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13163 Current Release: 13164 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13165 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13166 13167 131682) Linux 13169 13170 13171Added preliminary support for obtaining _TRA data for PCI root 13172bridges (Bjorn Helgaas). 13173 13174 131753) iASL Compiler Version X2046: 13176 13177Fixed a problem where the "_DDN" reserved name was defined to be a 13178control method with one argument. There are no arguments, and 13179_DDN does not have to be a control method. 13180 13181Fixed a problem with the Linux version of the compiler where the 13182source lines printed with error messages were the wrong lines. 13183This turned out to be the "LF versus CR/LF" difference between 13184Windows and Unix. This appears to be the longstanding issue 13185concerning listing output and error messages. 13186 13187Fixed a problem with the Linux version of compiler where opcode 13188names within error messages were wrong. This was caused by a 13189slight difference in the output of the Flex tool on Linux versus 13190Windows. 13191 13192Fixed a problem with the Linux compiler where the hex output files 13193contained some garbage data caused by an internal buffer overrun. 13194 13195 13196---------------------------------------- 1319717 May 2002. Summary of changes for this release. 13198 13199 132001) ACPI CA Core Subsystem Version 20020517: 13201 13202Implemented a workaround to an BIOS bug discovered on the HP 13203OmniBook where the FADT revision number and the table size are 13204inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 13205behavior is to fallback to using only the ACPI 1.0 fields of the 13206FADT if the table is too small to be a ACPI 2.0 table as claimed 13207by the revision number. Although this is a BIOS bug, this is a 13208case where the workaround is simple enough and with no side 13209effects, so it seemed prudent to add it. A warning message is 13210issued, however. 13211 13212Implemented minimum size checks for the fixed-length ACPI tables - 13213- the FADT and FACS, as well as consistency checks between the 13214revision number and the table size. 13215 13216Fixed a reported problem in the table override support where the 13217new table pointer was incorrectly treated as a physical address 13218instead of a logical address. 13219 13220Eliminated the use of the AE_AML_ERROR exception and replaced it 13221with more descriptive codes. 13222 13223Fixed a problem where an exception would occur if an ASL Field was 13224defined with no named Field Units underneath it (used by some 13225index fields). 13226 13227Code and Data Size: Current core subsystem library sizes are shown 13228below. These are the code and data sizes for the acpica.lib 13229produced by the Microsoft Visual C++ 6.0 compiler, and these 13230values do not include any ACPI driver or OSPM code. The debug 13231version of the code includes the debug output trace mechanism and 13232has a larger code and data size. Note that these values will vary 13233depending on the efficiency of the compiler and the compiler 13234options used during generation. 13235 13236 Previous Release 13237 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13238 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13239 Current Release: 13240 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13241 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13242 13243 13244 132452) Linux 13246 13247Much work done on ACPI init (MADT and PCI IRQ routing support). 13248(Paul D. and Dominik Brodowski) 13249 13250Fix PCI IRQ-related panic on boot (Sam Revitch) 13251 13252Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 13253 13254Fix "MHz" typo (Dominik Brodowski) 13255 13256Fix RTC year 2000 issue (Dominik Brodowski) 13257 13258Preclude multiple button proc entries (Eric Brunet) 13259 13260Moved arch-specific code out of include/platform/aclinux.h 13261 132623) iASL Compiler Version X2044: 13263 13264Implemented error checking for the string used in the EISAID macro 13265(Usually used in the definition of the _HID object.) The code now 13266strictly enforces the PnP format - exactly 7 characters, 3 13267uppercase letters and 4 hex digits. 13268 13269If a raw string is used in the definition of the _HID object 13270(instead of the EISAID macro), the string must contain all 13271alphanumeric characters (e.g., "*PNP0011" is not allowed because 13272of the asterisk.) 13273 13274Implemented checking for invalid use of ACPI reserved names for 13275most of the name creation operators (Name, Device, Event, Mutex, 13276OperationRegion, PowerResource, Processor, and ThermalZone.) 13277Previously, this check was only performed for control methods. 13278 13279Implemented an additional check on the Name operator to emit an 13280error if a reserved name that must be implemented in ASL as a 13281control method is used. We know that a reserved name must be a 13282method if it is defined with input arguments. 13283 13284The warning emitted when a namespace object reference is not found 13285during the cross reference phase has been changed into an error. 13286The "External" directive should be used for names defined in other 13287modules. 13288 13289 132904) Tools and Utilities 13291 13292The 16-bit tools (adump16 and aexec16) have been regenerated and 13293tested. 13294 13295Fixed a problem with the output of both acpidump and adump16 where 13296the indentation of closing parentheses and brackets was not 13297 13298aligned properly with the parent block. 13299 13300 13301---------------------------------------- 1330203 May 2002. Summary of changes for this release. 13303 13304 133051) ACPI CA Core Subsystem Version 20020503: 13306 13307Added support a new OSL interface that allows the host operating 13308 13309system software to override the DSDT found in the firmware - 13310AcpiOsTableOverride. With this interface, the OSL can examine the 13311version of the firmware DSDT and replace it with a different one 13312if desired. 13313 13314Added new external interfaces for accessing ACPI registers from 13315device drivers and other system software - AcpiGetRegister and 13316AcpiSetRegister. This was simply an externalization of the 13317existing AcpiHwBitRegister interfaces. 13318 13319Fixed a regression introduced in the previous build where the 13320ASL/AML CreateField operator always returned an error, 13321"destination must be a NS Node". 13322 13323Extended the maximum time (before failure) to successfully enable 13324ACPI mode to 3 seconds. 13325 13326Code and Data Size: Current core subsystem library sizes are shown 13327below. These are the code and data sizes for the acpica.lib 13328produced by the Microsoft Visual C++ 6.0 compiler, and these 13329values do not include any ACPI driver or OSPM code. The debug 13330version of the code includes the debug output trace mechanism and 13331has a larger code and data size. Note that these values will vary 13332depending on the efficiency of the compiler and the compiler 13333options used during generation. 13334 13335 Previous Release 13336 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13337 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13338 Current Release: 13339 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13340 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13341 13342 133432) Linux 13344 13345Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 13346free. While 3 out of 4 of our in-house systems work fine, the last 13347one still hangs when testing the LAPIC timer. 13348 13349Renamed many files in 2.5 kernel release to omit "acpi_" from the 13350name. 13351 13352Added warning on boot for Presario 711FR. 13353 13354Sleep improvements (Pavel Machek) 13355 13356ACPI can now be built without CONFIG_PCI enabled. 13357 13358IA64: Fixed memory map functions (JI Lee) 13359 13360 133613) iASL Compiler Version X2043: 13362 13363Added support to allow the compiler to be integrated into the MS 13364VC++ development environment for one-button compilation of single 13365files or entire projects -- with error-to-source-line mapping. 13366 13367Implemented support for compile-time constant folding for the 13368Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 13369specification. This allows the ASL writer to use expressions 13370instead of Integer/Buffer/String constants in terms that must 13371evaluate to constants at compile time and will also simplify the 13372emitted AML in any such sub-expressions that can be folded 13373(evaluated at compile-time.) This increases the size of the 13374compiler significantly because a portion of the ACPI CA AML 13375interpreter is included within the compiler in order to pre- 13376evaluate constant expressions. 13377 13378 13379Fixed a problem with the "Unicode" ASL macro that caused the 13380compiler to fault. (This macro is used in conjunction with the 13381_STR reserved name.) 13382 13383Implemented an AML opcode optimization to use the Zero, One, and 13384Ones opcodes where possible to further reduce the size of integer 13385constants and thus reduce the overall size of the generated AML 13386code. 13387 13388Implemented error checking for new reserved terms for ACPI version 133892.0A. 13390 13391Implemented the -qr option to display the current list of ACPI 13392reserved names known to the compiler. 13393 13394Implemented the -qc option to display the current list of ASL 13395operators that are allowed within constant expressions and can 13396therefore be folded at compile time if the operands are constants. 13397 13398 133994) Documentation 13400 13401Updated the Programmer's Reference for new interfaces, data types, 13402and memory allocation model options. 13403 13404Updated the iASL Compiler User Reference to apply new format and 13405add information about new features and options. 13406 13407---------------------------------------- 1340819 April 2002. Summary of changes for this release. 13409 134101) ACPI CA Core Subsystem Version 20020419: 13411 13412The source code base for the Core Subsystem has been completely 13413cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 13414versions. The Lint option files used are included in the 13415/acpi/generate/lint directory. 13416 13417Implemented enhanced status/error checking across the entire 13418Hardware manager subsystem. Any hardware errors (reported from 13419the OSL) are now bubbled up and will abort a running control 13420method. 13421 13422 13423Fixed a problem where the per-ACPI-table integer width (32 or 64) 13424was stored only with control method nodes, causing a fault when 13425non-control method code was executed during table loading. The 13426solution implemented uses a global variable to indicate table 13427width across the entire ACPI subsystem. Therefore, ACPI CA does 13428not support mixed integer widths across different ACPI tables 13429(DSDT, SSDT). 13430 13431Fixed a problem where NULL extended fields (X fields) in an ACPI 134322.0 ACPI FADT caused the table load to fail. Although the 13433existing ACPI specification is a bit fuzzy on this topic, the new 13434behavior is to fall back on a ACPI 1.0 field if the corresponding 13435ACPI 2.0 X field is zero (even though the table revision indicates 13436a full ACPI 2.0 table.) The ACPI specification will be updated to 13437clarify this issue. 13438 13439Fixed a problem with the SystemMemory operation region handler 13440where memory was always accessed byte-wise even if the AML- 13441specified access width was larger than a byte. This caused 13442problems on systems with memory-mapped I/O. Memory is now 13443accessed with the width specified. On systems that do not support 13444non-aligned transfers, a check is made to guarantee proper address 13445alignment before proceeding in order to avoid an AML-caused 13446alignment fault within the kernel. 13447 13448 13449Fixed a problem with the ExtendedIrq resource where only one byte 13450of the 4-byte Irq field was extracted. 13451 13452Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 13453function was out of date and required a rewrite. 13454 13455Code and Data Size: Current core subsystem library sizes are shown 13456below. These are the code and data sizes for the acpica.lib 13457produced by the Microsoft Visual C++ 6.0 compiler, and these 13458values do not include any ACPI driver or OSPM code. The debug 13459version of the code includes the debug output trace mechanism and 13460has a larger code and data size. Note that these values will vary 13461depending on the efficiency of the compiler and the compiler 13462options used during generation. 13463 13464 Previous Release 13465 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13466 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13467 Current Release: 13468 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13469 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13470 13471 134722) Linux 13473 13474PCI IRQ routing fixes (Dominik Brodowski) 13475 13476 134773) iASL Compiler Version X2042: 13478 13479Implemented an additional compile-time error check for a field 13480unit whose size + minimum access width would cause a run-time 13481access beyond the end-of-region. Previously, only the field size 13482itself was checked. 13483 13484The Core subsystem and iASL compiler now share a common parse 13485object in preparation for compile-time evaluation of the type 134863/4/5 ASL operators. 13487 13488 13489---------------------------------------- 13490Summary of changes for this release: 03_29_02 13491 134921) ACPI CA Core Subsystem Version 20020329: 13493 13494Implemented support for late evaluation of TermArg operands to 13495Buffer and Package objects. This allows complex expressions to be 13496used in the declarations of these object types. 13497 13498Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 134991.0, if the field was larger than 32 bits, it was returned as a 13500buffer - otherwise it was returned as an integer. In ACPI 2.0, 13501the field is returned as a buffer only if the field is larger than 1350264 bits. The TableRevision is now considered when making this 13503conversion to avoid incompatibility with existing ASL code. 13504 13505Implemented logical addressing for AcpiOsGetRootPointer. This 13506allows an RSDP with either a logical or physical address. With 13507this support, the host OS can now override all ACPI tables with 13508one logical RSDP. Includes implementation of "typed" pointer 13509support to allow a common data type for both physical and logical 13510pointers internally. This required a change to the 13511AcpiOsGetRootPointer interface. 13512 13513Implemented the use of ACPI 2.0 Generic Address Structures for all 13514GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 13515mapped I/O for these ACPI features. 13516 13517Initialization now ignores not only non-required tables (All 13518tables other than the FADT, FACS, DSDT, and SSDTs), but also does 13519not validate the table headers of unrecognized tables. 13520 13521Fixed a problem where a notify handler could only be 13522installed/removed on an object of type Device. All "notify" 13523 13524objects are now supported -- Devices, Processor, Power, and 13525Thermal. 13526 13527Removed most verbosity from the ACPI_DB_INFO debug level. Only 13528critical information is returned when this debug level is enabled. 13529 13530Code and Data Size: Current core subsystem library sizes are shown 13531below. These are the code and data sizes for the acpica.lib 13532produced by the Microsoft Visual C++ 6.0 compiler, and these 13533values do not include any ACPI driver or OSPM code. The debug 13534version of the code includes the debug output trace mechanism and 13535has a larger code and data size. Note that these values will vary 13536depending on the efficiency of the compiler and the compiler 13537options used during generation. 13538 13539 Previous Release 13540 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 13541 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 13542 Current Release: 13543 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13544 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13545 13546 135472) Linux: 13548 13549The processor driver (acpi_processor.c) now fully supports ACPI 135502.0-based processor performance control (e.g. Intel(R) 13551SpeedStep(TM) technology) Note that older laptops that only have 13552the Intel "applet" interface are not supported through this. The 13553'limit' and 'performance' interface (/proc) are fully functional. 13554[Note that basic policy for controlling performance state 13555transitions will be included in the next version of ospmd.] The 13556idle handler was modified to more aggressively use C2, and PIIX4 13557errata handling underwent a complete overhaul (big thanks to 13558Dominik Brodowski). 13559 13560Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 13561based devices in the ACPI namespace are now dynamically bound 13562(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 13563This allows, among other things, ACPI to resolve bus numbers for 13564subordinate PCI bridges. 13565 13566Enhanced PCI IRQ routing to get the proper bus number for _PRT 13567entries defined underneath PCI bridges. 13568 13569Added IBM 600E to bad bios list due to invalid _ADR value for 13570PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 13571 13572In the process of adding full MADT support (e.g. IOAPIC) for IA32 13573(acpi.c, mpparse.c) -- stay tuned. 13574 13575Added back visual differentiation between fixed-feature and 13576control-method buttons in dmesg. Buttons are also subtyped (e.g. 13577button/power/PWRF) to simplify button identification. 13578 13579We no longer use -Wno-unused when compiling debug. Please ignore 13580any "_THIS_MODULE defined but not used" messages. 13581 13582Can now shut down the system using "magic sysrq" key. 13583 13584 135853) iASL Compiler version 2041: 13586 13587Fixed a problem where conversion errors for hex/octal/decimal 13588constants were not reported. 13589 13590Implemented a fix for the General Register template Address field. 13591This field was 8 bits when it should be 64. 13592 13593Fixed a problem where errors/warnings were no longer being emitted 13594within the listing output file. 13595 13596Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 13597exactly 4 characters, alphanumeric only. 13598 13599 13600 13601 13602---------------------------------------- 13603Summary of changes for this release: 03_08_02 13604 13605 136061) ACPI CA Core Subsystem Version 20020308: 13607 13608Fixed a problem with AML Fields where the use of the "AccessAny" 13609keyword could cause an interpreter error due to attempting to read 13610or write beyond the end of the parent Operation Region. 13611 13612Fixed a problem in the SystemMemory Operation Region handler where 13613an attempt was made to map memory beyond the end of the region. 13614This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 13615errors on some Linux systems. 13616 13617Fixed a problem where the interpreter/namespace "search to root" 13618algorithm was not functioning for some object types. Relaxed the 13619internal restriction on the search to allow upsearches for all 13620external object types as well as most internal types. 13621 13622 136232) Linux: 13624 13625We now use safe_halt() macro versus individual calls to sti | hlt. 13626 13627Writing to the processor limit interface should now work. "echo 1" 13628will increase the limit, 2 will decrease, and 0 will reset to the 13629 13630default. 13631 13632 136333) ASL compiler: 13634 13635Fixed segfault on Linux version. 13636 13637 13638---------------------------------------- 13639Summary of changes for this release: 02_25_02 13640 136411) ACPI CA Core Subsystem: 13642 13643 13644Fixed a problem where the GPE bit masks were not initialized 13645properly, causing erratic GPE behavior. 13646 13647Implemented limited support for multiple calling conventions. The 13648code can be generated with either the VPL (variable parameter 13649list, or "C") convention, or the FPL (fixed parameter list, or 13650"Pascal") convention. The core subsystem is about 3.4% smaller 13651when generated with FPL. 13652 13653 136542) Linux 13655 13656Re-add some /proc/acpi/event functionality that was lost during 13657the rewrite 13658 13659Resolved issue with /proc events for fixed-feature buttons showing 13660up as the system device. 13661 13662Fixed checks on C2/C3 latencies to be inclusive of maximum values. 13663 13664Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 13665 13666Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 13667 13668Fixed limit interface & usage to fix bugs with passive cooling 13669hysterisis. 13670 13671Restructured PRT support. 13672 13673 13674---------------------------------------- 13675Summary of changes for this label: 02_14_02 13676 13677 136781) ACPI CA Core Subsystem: 13679 13680Implemented support in AcpiLoadTable to allow loading of FACS and 13681FADT tables. 13682 13683Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 13684been removed. All 64-bit platforms should be migrated to the ACPI 136852.0 tables. The actbl71.h header has been removed from the source 13686tree. 13687 13688All C macros defined within the subsystem have been prefixed with 13689"ACPI_" to avoid collision with other system include files. 13690 13691Removed the return value for the two AcpiOsPrint interfaces, since 13692it is never used and causes lint warnings for ignoring the return 13693value. 13694 13695Added error checking to all internal mutex acquire and release 13696calls. Although a failure from one of these interfaces is 13697probably a fatal system error, these checks will cause the 13698immediate abort of the currently executing method or interface. 13699 13700Fixed a problem where the AcpiSetCurrentResources interface could 13701fault. This was a side effect of the deployment of the new memory 13702allocation model. 13703 13704Fixed a couple of problems with the Global Lock support introduced 13705in the last major build. The "common" (1.0/2.0) internal FACS was 13706being overwritten with the FACS signature and clobbering the 13707Global Lock pointer. Also, the actual firmware FACS was being 13708unmapped after construction of the "common" FACS, preventing 13709access to the actual Global Lock field within it. The "common" 13710internal FACS is no longer installed as an actual ACPI table; it 13711is used simply as a global. 13712 13713Code and Data Size: Current core subsystem library sizes are shown 13714below. These are the code and data sizes for the acpica.lib 13715produced by the Microsoft Visual C++ 6.0 compiler, and these 13716values do not include any ACPI driver or OSPM code. The debug 13717version of the code includes the debug output trace mechanism and 13718has a larger code and data size. Note that these values will vary 13719depending on the efficiency of the compiler and the compiler 13720options used during generation. 13721 13722 Previous Release (02_07_01) 13723 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 13724 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 13725 Current Release: 13726 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 13727 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 13728 13729 137302) Linux 13731 13732Updated Linux-specific code for core macro and OSL interface 13733changes described above. 13734 13735Improved /proc/acpi/event. It now can be opened only once and has 13736proper poll functionality. 13737 13738Fixed and restructured power management (acpi_bus). 13739 13740Only create /proc "view by type" when devices of that class exist. 13741 13742Fixed "charging/discharging" bug (and others) in acpi_battery. 13743 13744Improved thermal zone code. 13745 13746 137473) ASL Compiler, version X2039: 13748 13749 13750Implemented the new compiler restriction on ASL String hex/octal 13751escapes to non-null, ASCII values. An error results if an invalid 13752value is used. (This will require an ACPI 2.0 specification 13753change.) 13754 13755AML object labels that are output to the optional C and ASM source 13756are now prefixed with both the ACPI table signature and table ID 13757to help guarantee uniqueness within a large BIOS project. 13758 13759 13760---------------------------------------- 13761Summary of changes for this label: 02_01_02 13762 137631) ACPI CA Core Subsystem: 13764 13765ACPI 2.0 support is complete in the entire Core Subsystem and the 13766ASL compiler. All new ACPI 2.0 operators are implemented and all 13767other changes for ACPI 2.0 support are complete. With 13768simultaneous code and data optimizations throughout the subsystem, 13769ACPI 2.0 support has been implemented with almost no additional 13770cost in terms of code and data size. 13771 13772Implemented a new mechanism for allocation of return buffers. If 13773the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 13774be allocated on behalf of the caller. Consolidated all return 13775buffer validation and allocation to a common procedure. Return 13776buffers will be allocated via the primary OSL allocation interface 13777since it appears that a separate pool is not needed by most users. 13778If a separate pool is required for these buffers, the caller can 13779still use the original mechanism and pre-allocate the buffer(s). 13780 13781Implemented support for string operands within the DerefOf 13782operator. 13783 13784Restructured the Hardware and Event managers to be table driven, 13785simplifying the source code and reducing the amount of generated 13786code. 13787 13788Split the common read/write low-level ACPI register bitfield 13789procedure into a separate read and write, simplifying the code 13790considerably. 13791 13792Obsoleted the AcpiOsCallocate OSL interface. This interface was 13793used only a handful of times and didn't have enough critical mass 13794for a separate interface. Replaced with a common calloc procedure 13795in the core. 13796 13797Fixed a reported problem with the GPE number mapping mechanism 13798that allows GPE1 numbers to be non-contiguous with GPE0. 13799Reorganized the GPE information and shrunk a large array that was 13800originally large enough to hold info for all possible GPEs (256) 13801to simply large enough to hold all GPEs up to the largest GPE 13802number on the machine. 13803 13804Fixed a reported problem with resource structure alignment on 64- 13805bit platforms. 13806 13807Changed the AcpiEnableEvent and AcpiDisableEvent external 13808interfaces to not require any flags for the common case of 13809enabling/disabling a GPE. 13810 13811Implemented support to allow a "Notify" on a Processor object. 13812 13813Most TBDs in comments within the source code have been resolved 13814and eliminated. 13815 13816 13817Fixed a problem in the interpreter where a standalone parent 13818prefix (^) was not handled correctly in the interpreter and 13819debugger. 13820 13821Removed obsolete and unnecessary GPE save/restore code. 13822 13823Implemented Field support in the ASL Load operator. This allows a 13824table to be loaded from a named field, in addition to loading a 13825table directly from an Operation Region. 13826 13827Implemented timeout and handle support in the external Global Lock 13828interfaces. 13829 13830Fixed a problem in the AcpiDump utility where pathnames were no 13831longer being generated correctly during the dump of named objects. 13832 13833Modified the AML debugger to give a full display of if/while 13834predicates instead of just one AML opcode at a time. (The 13835predicate can have several nested ASL statements.) The old method 13836was confusing during single stepping. 13837 13838Code and Data Size: Current core subsystem library sizes are shown 13839below. These are the code and data sizes for the acpica.lib 13840produced by the Microsoft Visual C++ 6.0 compiler, and these 13841values do not include any ACPI driver or OSPM code. The debug 13842version of the code includes the debug output trace mechanism and 13843has a larger code and data size. Note that these values will vary 13844depending on the efficiency of the compiler and the compiler 13845options used during generation. 13846 13847 Previous Release (12_18_01) 13848 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 13849 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 13850 Current Release: 13851 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 13852 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 13853 138542) Linux 13855 13856 Implemented fix for PIIX reverse throttling errata (Processor 13857driver) 13858 13859Added new Limit interface (Processor and Thermal drivers) 13860 13861New thermal policy (Thermal driver) 13862 13863Many updates to /proc 13864 13865Battery "low" event support (Battery driver) 13866 13867Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 13868 13869IA32 - IA64 initialization unification, no longer experimental 13870 13871Menuconfig options redesigned 13872 138733) ASL Compiler, version X2037: 13874 13875Implemented several new output features to simplify integration of 13876AML code into firmware: 1) Output the AML in C source code with 13877labels for each named ASL object. The original ASL source code 13878is interleaved as C comments. 2) Output the AML in ASM source code 13879with labels and interleaved ASL source. 3) Output the AML in 13880raw hex table form, in either C or ASM. 13881 13882Implemented support for optional string parameters to the 13883LoadTable operator. 13884 13885Completed support for embedded escape sequences within string 13886literals. The compiler now supports all single character escapes 13887as well as the Octal and Hex escapes. Note: the insertion of a 13888null byte into a string literal (via the hex/octal escape) causes 13889the string to be immediately terminated. A warning is issued. 13890 13891Fixed a problem where incorrect AML was generated for the case 13892where an ASL namepath consists of a single parent prefix ( 13893 13894) with no trailing name segments. 13895 13896The compiler has been successfully generated with a 64-bit C 13897compiler. 13898 13899 13900 13901 13902---------------------------------------- 13903Summary of changes for this label: 12_18_01 13904 139051) Linux 13906 13907Enhanced blacklist with reason and severity fields. Any table's 13908signature may now be used to identify a blacklisted system. 13909 13910Call _PIC control method to inform the firmware which interrupt 13911model the OS is using. Turn on any disabled link devices. 13912 13913Cleaned up busmgr /proc error handling (Andreas Dilger) 13914 13915 2) ACPI CA Core Subsystem: 13916 13917Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 13918while loop) 13919 13920Completed implementation of the ACPI 2.0 "Continue", 13921"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 13922operators. All new ACPI 2.0 operators are now implemented in both 13923the ASL compiler and the AML interpreter. The only remaining ACPI 139242.0 task is support for the String data type in the DerefOf 13925operator. Fixed a problem with AcquireMutex where the status code 13926was lost if the caller had to actually wait for the mutex. 13927 13928Increased the maximum ASL Field size from 64K bits to 4G bits. 13929 13930Completed implementation of the external Global Lock interfaces -- 13931AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 13932Handler parameters were added. 13933 13934Completed another pass at removing warnings and issues when 13935compiling with 64-bit compilers. The code now compiles cleanly 13936with the Intel 64-bit C/C++ compiler. Most notably, the pointer 13937add and subtract (diff) macros have changed considerably. 13938 13939 13940Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1394164-bit platforms, 32-bits on all others. This type is used 13942wherever memory allocation and/or the C sizeof() operator is used, 13943and affects the OSL memory allocation interfaces AcpiOsAllocate 13944and AcpiOsCallocate. 13945 13946Implemented sticky user breakpoints in the AML debugger. 13947 13948Code and Data Size: Current core subsystem library sizes are shown 13949below. These are the code and data sizes for the acpica.lib 13950produced by the Microsoft Visual C++ 6.0 compiler, and these 13951values do not include any ACPI driver or OSPM code. The debug 13952version of the code includes the debug output trace mechanism and 13953has a larger code and data size. Note that these values will vary 13954depending on the efficiency of the compiler and the compiler 13955options used during generation. 13956 13957 Previous Release (12_05_01) 13958 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 13959 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 13960 Current Release: 13961 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 13962 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 13963 13964 3) ASL Compiler, version X2034: 13965 13966Now checks for (and generates an error if detected) the use of a 13967Break or Continue statement without an enclosing While statement. 13968 13969 13970Successfully generated the compiler with the Intel 64-bit C 13971compiler. 13972 13973 ---------------------------------------- 13974Summary of changes for this label: 12_05_01 13975 13976 1) ACPI CA Core Subsystem: 13977 13978The ACPI 2.0 CopyObject operator is fully implemented. This 13979operator creates a new copy of an object (and is also used to 13980bypass the "implicit conversion" mechanism of the Store operator.) 13981 13982The ACPI 2.0 semantics for the SizeOf operator are fully 13983implemented. The change is that performing a SizeOf on a 13984reference object causes an automatic dereference of the object to 13985tha actual value before the size is evaluated. This behavior was 13986undefined in ACPI 1.0. 13987 13988The ACPI 2.0 semantics for the Extended IRQ resource descriptor 13989have been implemented. The interrupt polarity and mode are now 13990independently set. 13991 13992Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 13993appearing in Package objects were not properly converted to 13994integers when the internal Package was converted to an external 13995object (via the AcpiEvaluateObject interface.) 13996 13997Fixed a problem with the namespace object deletion mechanism for 13998objects created by control methods. There were two parts to this 13999problem: 1) Objects created during the initialization phase method 14000parse were not being deleted, and 2) The object owner ID mechanism 14001to track objects was broken. 14002 14003Fixed a problem where the use of the ASL Scope operator within a 14004control method would result in an invalid opcode exception. 14005 14006Fixed a problem introduced in the previous label where the buffer 14007length required for the _PRT structure was not being returned 14008correctly. 14009 14010Code and Data Size: Current core subsystem library sizes are shown 14011below. These are the code and data sizes for the acpica.lib 14012produced by the Microsoft Visual C++ 6.0 compiler, and these 14013values do not include any ACPI driver or OSPM code. The debug 14014version of the code includes the debug output trace mechanism and 14015has a larger code and data size. Note that these values will vary 14016depending on the efficiency of the compiler and the compiler 14017options used during generation. 14018 14019 Previous Release (11_20_01) 14020 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14021 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14022 14023 Current Release: 14024 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14025 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14026 14027 2) Linux: 14028 14029Updated all files to apply cleanly against 2.4.16. 14030 14031Added basic PCI Interrupt Routing Table (PRT) support for IA32 14032(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 14033version supports both static and dyanmic PRT entries, but dynamic 14034entries are treated as if they were static (not yet 14035reconfigurable). Architecture- specific code to use this data is 14036absent on IA32 but should be available shortly. 14037 14038Changed the initialization sequence to start the ACPI interpreter 14039(acpi_init) prior to initialization of the PCI driver (pci_init) 14040in init/main.c. This ordering is required to support PRT and 14041facilitate other (future) enhancement. A side effect is that the 14042ACPI bus driver and certain device drivers can no longer be loaded 14043as modules. 14044 14045Modified the 'make menuconfig' options to allow PCI Interrupt 14046Routing support to be included without the ACPI Bus and other 14047device drivers. 14048 14049 3) ASL Compiler, version X2033: 14050 14051Fixed some issues with the use of the new CopyObject and 14052DataTableRegion operators. Both are fully functional. 14053 14054 ---------------------------------------- 14055Summary of changes for this label: 11_20_01 14056 14057 20 November 2001. Summary of changes for this release. 14058 14059 1) ACPI CA Core Subsystem: 14060 14061Updated Index support to match ACPI 2.0 semantics. Storing a 14062Integer, String, or Buffer to an Index of a Buffer will store only 14063the least-significant byte of the source to the Indexed buffer 14064byte. Multiple writes are not performed. 14065 14066Fixed a problem where the access type used in an AccessAs ASL 14067operator was not recorded correctly into the field object. 14068 14069Fixed a problem where ASL Event objects were created in a 14070signalled state. Events are now created in an unsignalled state. 14071 14072The internal object cache is now purged after table loading and 14073initialization to reduce the use of dynamic kernel memory -- on 14074the assumption that object use is greatest during the parse phase 14075of the entire table (versus the run-time use of individual control 14076methods.) 14077 14078ACPI 2.0 variable-length packages are now fully operational. 14079 14080Code and Data Size: Code and Data optimizations have permitted new 14081feature development with an actual reduction in the library size. 14082Current core subsystem library sizes are shown below. These are 14083the code and data sizes for the acpica.lib produced by the 14084Microsoft Visual C++ 6.0 compiler, and these values do not include 14085any ACPI driver or OSPM code. The debug version of the code 14086includes the debug output trace mechanism and has a larger code 14087and data size. Note that these values will vary depending on the 14088efficiency of the compiler and the compiler options used during 14089generation. 14090 14091 Previous Release (11_09_01): 14092 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14093 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14094 14095 Current Release: 14096 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14097 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14098 14099 2) Linux: 14100 14101Enhanced the ACPI boot-time initialization code to allow the use 14102of Local APIC tables for processor enumeration on IA-32, and to 14103pave the way for a fully MPS-free boot (on SMP systems) in the 14104near future. This functionality replaces 14105arch/i386/kernel/acpitables.c, which was introduced in an earlier 141062.4.15-preX release. To enable this feature you must add 14107"acpi_boot=on" to the kernel command line -- see the help entry 14108for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 14109the works... 14110 14111Restructured the configuration options to allow boot-time table 14112parsing support without inclusion of the ACPI Interpreter (and 14113other) code. 14114 14115NOTE: This release does not include fixes for the reported events, 14116power-down, and thermal passive cooling issues (coming soon). 14117 14118 3) ASL Compiler: 14119 14120Added additional typechecking for Fields within restricted access 14121Operation Regions. All fields within EC and CMOS regions must be 14122declared with ByteAcc. All fields withing SMBus regions must be 14123declared with the BufferAcc access type. 14124 14125Fixed a problem where the listing file output of control methods 14126no longer interleaved the actual AML code with the ASL source 14127code. 14128 14129 14130 14131 14132---------------------------------------- 14133Summary of changes for this label: 11_09_01 14134 141351) ACPI CA Core Subsystem: 14136 14137Implemented ACPI 2.0-defined support for writes to fields with a 14138Buffer, String, or Integer source operand that is smaller than the 14139target field. In these cases, the source operand is zero-extended 14140to fill the target field. 14141 14142Fixed a problem where a Field starting bit offset (within the 14143parent operation region) was calculated incorrectly if the 14144 14145alignment of the field differed from the access width. This 14146affected CreateWordField, CreateDwordField, CreateQwordField, and 14147possibly other fields that use the "AccessAny" keyword. 14148 14149Fixed a problem introduced in the 11_02_01 release where indirect 14150stores through method arguments did not operate correctly. 14151 141522) Linux: 14153 14154Implemented boot-time ACPI table parsing support 14155(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 14156facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 14157legacy BIOS interfaces (e.g. MPS) for the configuration of system 14158processors, memory, and interrupts during setup_arch(). Note that 14159this patch does not include the required architecture-specific 14160changes required to apply this information -- subsequent patches 14161will be posted for both IA32 and IA64 to achieve this. 14162 14163Added low-level sleep support for IA32 platforms, courtesy of Pat 14164Mochel. This allows IA32 systems to transition to/from various 14165sleeping states (e.g. S1, S3), although the lack of a centralized 14166driver model and power-manageable drivers will prevent its 14167(successful) use on most systems. 14168 14169Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 14170submenu, unified IA32 and IA64 options, added new "Boot using ACPI 14171tables" option, etc. 14172 14173Increased the default timeout for the EC driver from 1ms to 10ms 14174(1000 cycles of 10us) to try to address AE_TIME errors during EC 14175transactions. 14176 14177 ---------------------------------------- 14178Summary of changes for this label: 11_02_01 14179 141801) ACPI CA Core Subsystem: 14181 14182ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 14183(QWordAcc keyword). All ACPI 2.0 64-bit support is now 14184implemented. 14185 14186OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 14187changes to support ACPI 2.0 Qword field access. Read/Write 14188PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 14189accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 14190the value parameter for the address space handler interface is now 14191an ACPI_INTEGER. OSL implementations of these interfaces must now 14192handle the case where the Width parameter is 64. 14193 14194Index Fields: Fixed a problem where unaligned bit assembly and 14195disassembly for IndexFields was not supported correctly. 14196 14197Index and Bank Fields: Nested Index and Bank Fields are now 14198supported. During field access, a check is performed to ensure 14199that the value written to an Index or Bank register is not out of 14200the range of the register. The Index (or Bank) register is 14201written before each access to the field data. Future support will 14202include allowing individual IndexFields to be wider than the 14203DataRegister width. 14204 14205Fields: Fixed a problem where the AML interpreter was incorrectly 14206attempting to write beyond the end of a Field/OpRegion. This was 14207a boundary case that occurred when a DWORD field was written to a 14208BYTE access OpRegion, forcing multiple writes and causing the 14209interpreter to write one datum too many. 14210 14211Fields: Fixed a problem with Field/OpRegion access where the 14212starting bit address of a field was incorrectly calculated if the 14213current access type was wider than a byte (WordAcc, DwordAcc, or 14214QwordAcc). 14215 14216Fields: Fixed a problem where forward references to individual 14217FieldUnits (individual Field names within a Field definition) were 14218not resolved during the AML table load. 14219 14220Fields: Fixed a problem where forward references from a Field 14221definition to the parent Operation Region definition were not 14222resolved during the AML table load. 14223 14224Fields: Duplicate FieldUnit names within a scope are now detected 14225during AML table load. 14226 14227Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 14228returned an incorrect name for the root node. 14229 14230Code and Data Size: Code and Data optimizations have permitted new 14231feature development with an actual reduction in the library size. 14232Current core subsystem library sizes are shown below. These are 14233the code and data sizes for the acpica.lib produced by the 14234Microsoft Visual C++ 6.0 compiler, and these values do not include 14235any ACPI driver or OSPM code. The debug version of the code 14236includes the debug output trace mechanism and has a larger code 14237and data size. Note that these values will vary depending on the 14238efficiency of the compiler and the compiler options used during 14239generation. 14240 14241 Previous Release (10_18_01): 14242 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14243 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14244 14245 Current Release: 14246 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14247 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14248 14249 2) Linux: 14250 14251Improved /proc processor output (Pavel Machek) Re-added 14252MODULE_LICENSE("GPL") to all modules. 14253 14254 3) ASL Compiler version X2030: 14255 14256Duplicate FieldUnit names within a scope are now detected and 14257flagged as errors. 14258 14259 4) Documentation: 14260 14261Programmer Reference updated to reflect OSL and address space 14262handler interface changes described above. 14263 14264---------------------------------------- 14265Summary of changes for this label: 10_18_01 14266 14267ACPI CA Core Subsystem: 14268 14269Fixed a problem with the internal object reference count mechanism 14270that occasionally caused premature object deletion. This resolves 14271all of the outstanding problem reports where an object is deleted 14272in the middle of an interpreter evaluation. Although this problem 14273only showed up in rather obscure cases, the solution to the 14274problem involved an adjustment of all reference counts involving 14275objects attached to namespace nodes. 14276 14277Fixed a problem with Field support in the interpreter where 14278writing to an aligned field whose length is an exact multiple (2 14279or greater) of the field access granularity would cause an attempt 14280to write beyond the end of the field. 14281 14282The top level AML opcode execution functions within the 14283interpreter have been renamed with a more meaningful and 14284consistent naming convention. The modules exmonad.c and 14285exdyadic.c were eliminated. New modules are exoparg1.c, 14286exoparg2.c, exoparg3.c, and exoparg6.c. 14287 14288Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 14289 14290Fixed a problem where the AML debugger was causing some internal 14291objects to not be deleted during subsystem termination. 14292 14293Fixed a problem with the external AcpiEvaluateObject interface 14294where the subsystem would fault if the named object to be 14295evaluated refered to a constant such as Zero, Ones, etc. 14296 14297Fixed a problem with IndexFields and BankFields where the 14298subsystem would fault if the index, data, or bank registers were 14299not defined in the same scope as the field itself. 14300 14301Added printf format string checking for compilers that support 14302this feature. Corrected more than 50 instances of issues with 14303format specifiers within invocations of ACPI_DEBUG_PRINT 14304throughout the core subsystem code. 14305 14306The ASL "Revision" operator now returns the ACPI support level 14307implemented in the core - the value "2" since the ACPI 2.0 support 14308is more than 50% implemented. 14309 14310Enhanced the output of the AML debugger "dump namespace" command 14311to output in a more human-readable form. 14312 14313Current core subsystem library code sizes are shown below. These 14314 14315are the code and data sizes for the acpica.lib produced by the 14316Microsoft Visual C++ 6.0 compiler, and these values do not include 14317any ACPI driver or OSPM code. The debug version of the code 14318includes the full debug trace mechanism -- leading to a much 14319 14320larger code and data size. Note that these values will vary 14321depending on the efficiency of the compiler and the compiler 14322options used during generation. 14323 14324 Previous Label (09_20_01): 14325 Non-Debug Version: 65K Code, 5K Data, 70K Total 14326 Debug Version: 138K Code, 58K Data, 196K Total 14327 14328 This Label: 14329 14330 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14331 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14332 14333Linux: 14334 14335Implemented a "Bad BIOS Blacklist" to track machines that have 14336known ASL/AML problems. 14337 14338Enhanced the /proc interface for the thermal zone driver and added 14339support for _HOT (the critical suspend trip point). The 'info' 14340file now includes threshold/policy information, and allows setting 14341of _SCP (cooling preference) and _TZP (polling frequency) values 14342to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 14343frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 14344preference to the passive/quiet mode (if supported by the ASL). 14345 14346Implemented a workaround for a gcc bug that resuted in an OOPs 14347when loading the control method battery driver. 14348 14349 ---------------------------------------- 14350Summary of changes for this label: 09_20_01 14351 14352 ACPI CA Core Subsystem: 14353 14354The AcpiEnableEvent and AcpiDisableEvent interfaces have been 14355modified to allow individual GPE levels to be flagged as wake- 14356enabled (i.e., these GPEs are to remain enabled when the platform 14357sleeps.) 14358 14359The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 14360support wake-enabled GPEs. This means that upon entering the 14361sleep state, all GPEs that are not wake-enabled are disabled. 14362When leaving the sleep state, these GPEs are reenabled. 14363 14364A local double-precision divide/modulo module has been added to 14365enhance portability to OS kernels where a 64-bit math library is 14366not available. The new module is "utmath.c". 14367 14368Several optimizations have been made to reduce the use of CPU 14369stack. Originally over 2K, the maximum stack usage is now below 143702K at 1860 bytes (1.82k) 14371 14372Fixed a problem with the AcpiGetFirmwareTable interface where the 14373root table pointer was not mapped into a logical address properly. 14374 14375Fixed a problem where a NULL pointer was being dereferenced in the 14376interpreter code for the ASL Notify operator. 14377 14378Fixed a problem where the use of the ASL Revision operator 14379returned an error. This operator now returns the current version 14380of the ACPI CA core subsystem. 14381 14382Fixed a problem where objects passed as control method parameters 14383to AcpiEvaluateObject were always deleted at method termination. 14384However, these objects may end up being stored into the namespace 14385by the called method. The object reference count mechanism was 14386applied to these objects instead of a force delete. 14387 14388Fixed a problem where static strings or buffers (contained in the 14389AML code) that are declared as package elements within the ASL 14390code could cause a fault because the interpreter would attempt to 14391delete them. These objects are now marked with the "static 14392object" flag to prevent any attempt to delete them. 14393 14394Implemented an interpreter optimization to use operands directly 14395from the state object instead of extracting the operands to local 14396variables. This reduces stack use and code size, and improves 14397performance. 14398 14399The module exxface.c was eliminated as it was an unnecessary extra 14400layer of code. 14401 14402Current core subsystem library code sizes are shown below. These 14403are the code and data sizes for the acpica.lib produced by the 14404Microsoft Visual C++ 6.0 compiler, and these values do not include 14405any ACPI driver or OSPM code. The debug version of the code 14406includes the full debug trace mechanism -- leading to a much 14407larger code and data size. Note that these values will vary 14408depending on the efficiency of the compiler and the compiler 14409options used during generation. 14410 14411 Non-Debug Version: 65K Code, 5K Data, 70K Total 14412(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 14413Total (Previously 195K) 14414 14415Linux: 14416 14417Support for ACPI 2.0 64-bit integers has been added. All ACPI 14418Integer objects are now 64 bits wide 14419 14420All Acpi data types and structures are now in lower case. Only 14421Acpi macros are upper case for differentiation. 14422 14423 Documentation: 14424 14425Changes to the external interfaces as described above. 14426 14427 ---------------------------------------- 14428Summary of changes for this label: 08_31_01 14429 14430 ACPI CA Core Subsystem: 14431 14432A bug with interpreter implementation of the ASL Divide operator 14433was found and fixed. The implicit function return value (not the 14434explicit store operands) was returning the remainder instead of 14435the quotient. This was a longstanding bug and it fixes several 14436known outstanding issues on various platforms. 14437 14438The ACPI_DEBUG_PRINT and function trace entry/exit macros have 14439been further optimized for size. There are 700 invocations of the 14440DEBUG_PRINT macro alone, so each optimization reduces the size of 14441the debug version of the subsystem significantly. 14442 14443A stack trace mechanism has been implemented. The maximum stack 14444usage is about 2K on 32-bit platforms. The debugger command "stat 14445stack" will display the current maximum stack usage. 14446 14447All public symbols and global variables within the subsystem are 14448now prefixed with the string "Acpi". This keeps all of the 14449symbols grouped together in a kernel map, and avoids conflicts 14450with other kernel subsystems. 14451 14452Most of the internal fixed lookup tables have been moved into the 14453code segment via the const operator. 14454 14455Several enhancements have been made to the interpreter to both 14456reduce the code size and improve performance. 14457 14458Current core subsystem library code sizes are shown below. These 14459are the code and data sizes for the acpica.lib produced by the 14460Microsoft Visual C++ 6.0 compiler, and these values do not include 14461any ACPI driver or OSPM code. The debug version of the code 14462includes the full debug trace mechanism which contains over 700 14463invocations of the DEBUG_PRINT macro, 500 function entry macro 14464invocations, and over 900 function exit macro invocations -- 14465leading to a much larger code and data size. Note that these 14466values will vary depending on the efficiency of the compiler and 14467the compiler options used during generation. 14468 14469 Non-Debug Version: 64K Code, 5K Data, 69K Total 14470Debug Version: 137K Code, 58K Data, 195K Total 14471 14472 Linux: 14473 14474Implemented wbinvd() macro, pending a kernel-wide definition. 14475 14476Fixed /proc/acpi/event to handle poll() and short reads. 14477 14478 ASL Compiler, version X2026: 14479 14480Fixed a problem introduced in the previous label where the AML 14481 14482code emitted for package objects produced packages with zero 14483length. 14484 14485 ---------------------------------------- 14486Summary of changes for this label: 08_16_01 14487 14488ACPI CA Core Subsystem: 14489 14490The following ACPI 2.0 ASL operators have been implemented in the 14491AML interpreter (These are already supported by the Intel ASL 14492compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 14493ToBuffer. Support for 64-bit AML constants is implemented in the 14494AML parser, debugger, and disassembler. 14495 14496The internal memory tracking mechanism (leak detection code) has 14497been upgraded to reduce the memory overhead (a separate tracking 14498block is no longer allocated for each memory allocation), and now 14499supports all of the internal object caches. 14500 14501The data structures and code for the internal object caches have 14502been coelesced and optimized so that there is a single cache and 14503memory list data structure and a single group of functions that 14504implement generic cache management. This has reduced the code 14505size in both the debug and release versions of the subsystem. 14506 14507The DEBUG_PRINT macro(s) have been optimized for size and replaced 14508by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 14509different, because it generates a single call to an internal 14510function. This results in a savings of about 90 bytes per 14511invocation, resulting in an overall code and data savings of about 1451216% in the debug version of the subsystem. 14513 14514 Linux: 14515 14516Fixed C3 disk corruption problems and re-enabled C3 on supporting 14517machines. 14518 14519Integrated low-level sleep code by Patrick Mochel. 14520 14521Further tweaked source code Linuxization. 14522 14523Other minor fixes. 14524 14525 ASL Compiler: 14526 14527Support for ACPI 2.0 variable length packages is fixed/completed. 14528 14529Fixed a problem where the optional length parameter for the ACPI 145302.0 ToString operator. 14531 14532Fixed multiple extraneous error messages when a syntax error is 14533detected within the declaration line of a control method. 14534 14535 ---------------------------------------- 14536Summary of changes for this label: 07_17_01 14537 14538ACPI CA Core Subsystem: 14539 14540Added a new interface named AcpiGetFirmwareTable to obtain any 14541ACPI table via the ACPI signature. The interface can be called at 14542any time during kernel initialization, even before the kernel 14543virtual memory manager is initialized and paging is enabled. This 14544allows kernel subsystems to obtain ACPI tables very early, even 14545before the ACPI CA subsystem is initialized. 14546 14547Fixed a problem where Fields defined with the AnyAcc attribute 14548could be resolved to the incorrect address under the following 14549conditions: 1) the field width is larger than 8 bits and 2) the 14550parent operation region is not defined on a DWORD boundary. 14551 14552Fixed a problem where the interpreter is not being locked during 14553namespace initialization (during execution of the _INI control 14554methods), causing an error when an attempt is made to release it 14555later. 14556 14557ACPI 2.0 support in the AML Interpreter has begun and will be 14558ongoing throughout the rest of this year. In this label, The Mod 14559operator is implemented. 14560 14561Added a new data type to contain full PCI addresses named 14562ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 14563and Function values. 14564 14565 Linux: 14566 14567Enhanced the Linux version of the source code to change most 14568capitalized ACPI type names to lowercase. For example, all 14569instances of ACPI_STATUS are changed to acpi_status. This will 14570result in a large diff, but the change is strictly cosmetic and 14571aligns the CA code closer to the Linux coding standard. 14572 14573OSL Interfaces: 14574 14575The interfaces to the PCI configuration space have been changed to 14576add the PCI Segment number and to split the single 32-bit combined 14577DeviceFunction field into two 16-bit fields. This was 14578accomplished by moving the four values that define an address in 14579PCI configuration space (segment, bus, device, and function) to 14580the new ACPI_PCI_ID structure. 14581 14582The changes to the PCI configuration space interfaces led to a 14583reexamination of the complete set of address space access 14584interfaces for PCI, I/O, and Memory. The previously existing 18 14585interfaces have proven difficult to maintain (any small change 14586must be propagated across at least 6 interfaces) and do not easily 14587allow for future expansion to 64 bits if necessary. Also, on some 14588systems, it would not be appropriate to demultiplex the access 14589width (8, 16, 32,or 64) before calling the OSL if the 14590corresponding native OS interfaces contain a similar access width 14591parameter. For these reasons, the 18 address space interfaces 14592have been replaced by these 6 new ones: 14593 14594AcpiOsReadPciConfiguration 14595AcpiOsWritePciConfiguration 14596AcpiOsReadMemory 14597AcpiOsWriteMemory 14598AcpiOsReadPort 14599AcpiOsWritePort 14600 14601Added a new interface named AcpiOsGetRootPointer to allow the OSL 14602to perform the platform and/or OS-specific actions necessary to 14603obtain the ACPI RSDP table pointer. On IA-32 platforms, this 14604interface will simply call down to the CA core to perform the low- 14605memory search for the table. On IA-64, the RSDP is obtained from 14606EFI. Migrating this interface to the OSL allows the CA core to 14607 14608remain OS and platform independent. 14609 14610Added a new interface named AcpiOsSignal to provide a generic 14611"function code and pointer" interface for various miscellaneous 14612signals and notifications that must be made to the host OS. The 14613first such signals are intended to support the ASL Fatal and 14614Breakpoint operators. In the latter case, the AcpiOsBreakpoint 14615interface has been obsoleted. 14616 14617The definition of the AcpiFormatException interface has been 14618changed to simplify its use. The caller no longer must supply a 14619buffer to the call; A pointer to a const string is now returned 14620directly. This allows the call to be easily used in printf 14621statements, etc. since the caller does not have to manage a local 14622buffer. 14623 14624 14625 ASL Compiler, Version X2025: 14626 14627The ACPI 2.0 Switch/Case/Default operators have been implemented 14628and are fully functional. They will work with all ACPI 1.0 14629interpreters, since the operators are simply translated to If/Else 14630pairs. 14631 14632The ACPI 2.0 ElseIf operator is implemented and will also work 14633with 1.0 interpreters, for the same reason. 14634 14635Implemented support for ACPI 2.0 variable-length packages. These 14636packages have a separate opcode, and their size is determined by 14637the interpreter at run-time. 14638 14639Documentation The ACPI CA Programmer Reference has been updated to 14640reflect the new interfaces and changes to existing interfaces. 14641 14642 ------------------------------------------ 14643Summary of changes for this label: 06_15_01 14644 14645 ACPI CA Core Subsystem: 14646 14647Fixed a problem where a DWORD-accessed field within a Buffer 14648object would get its byte address inadvertently rounded down to 14649the nearest DWORD. Buffers are always Byte-accessible. 14650 14651 ASL Compiler, version X2024: 14652 14653Fixed a problem where the Switch() operator would either fault or 14654hang the compiler. Note however, that the AML code for this ACPI 146552.0 operator is not yet implemented. 14656 14657Compiler uses the new AcpiOsGetTimer interface to obtain compile 14658timings. 14659 14660Implementation of the CreateField operator automatically converts 14661a reference to a named field within a resource descriptor from a 14662byte offset to a bit offset if required. 14663 14664Added some missing named fields from the resource descriptor 14665support. These are the names that are automatically created by the 14666compiler to reference fields within a descriptor. They are only 14667valid at compile time and are not passed through to the AML 14668interpreter. 14669 14670Resource descriptor named fields are now typed as Integers and 14671subject to compile-time typechecking when used in expressions. 14672 14673 ------------------------------------------ 14674Summary of changes for this label: 05_18_01 14675 14676 ACPI CA Core Subsystem: 14677 14678Fixed a couple of problems in the Field support code where bits 14679from adjacent fields could be returned along with the proper field 14680bits. Restructured the field support code to improve performance, 14681readability and maintainability. 14682 14683New DEBUG_PRINTP macro automatically inserts the procedure name 14684into the output, saving hundreds of copies of procedure name 14685strings within the source, shrinking the memory footprint of the 14686debug version of the core subsystem. 14687 14688 Source Code Structure: 14689 14690The source code directory tree was restructured to reflect the 14691current organization of the component architecture. Some files 14692and directories have been moved and/or renamed. 14693 14694 Linux: 14695 14696Fixed leaking kacpidpc processes. 14697 14698Fixed queueing event data even when /proc/acpi/event is not 14699opened. 14700 14701 ASL Compiler, version X2020: 14702 14703Memory allocation performance enhancement - over 24X compile time 14704improvement on large ASL files. Parse nodes and namestring 14705buffers are now allocated from a large internal compiler buffer. 14706 14707The temporary .SRC file is deleted unless the "-s" option is 14708specified 14709 14710The "-d" debug output option now sends all output to the .DBG file 14711instead of the console. 14712 14713"External" second parameter is now optional 14714 14715"ElseIf" syntax now properly allows the predicate 14716 14717Last operand to "Load" now recognized as a Target operand 14718 14719Debug object can now be used anywhere as a normal object. 14720 14721ResourceTemplate now returns an object of type BUFFER 14722 14723EISAID now returns an object of type INTEGER 14724 14725"Index" now works with a STRING operand 14726 14727"LoadTable" now accepts optional parameters 14728 14729"ToString" length parameter is now optional 14730 14731"Interrupt (ResourceType," parse error fixed. 14732 14733"Register" with a user-defined region space parse error fixed 14734 14735Escaped backslash at the end of a string ("\\") scan/parse error 14736fixed 14737 14738"Revision" is now an object of type INTEGER. 14739 14740 14741 14742------------------------------------------ 14743Summary of changes for this label: 05_02_01 14744 14745Linux: 14746 14747/proc/acpi/event now blocks properly. 14748 14749Removed /proc/sys/acpi. You can still dump your DSDT from 14750/proc/acpi/dsdt. 14751 14752 ACPI CA Core Subsystem: 14753 14754Fixed a problem introduced in the previous label where some of the 14755"small" resource descriptor types were not recognized. 14756 14757Improved error messages for the case where an ASL Field is outside 14758the range of the parent operation region. 14759 14760 ASL Compiler, version X2018: 14761 14762 14763Added error detection for ASL Fields that extend beyond the length 14764of the parent operation region (only if the length of the region 14765is known at compile time.) This includes fields that have a 14766minimum access width that is smaller than the parent region, and 14767individual field units that are partially or entirely beyond the 14768extent of the parent. 14769 14770 14771 14772------------------------------------------ 14773Summary of changes for this label: 04_27_01 14774 14775 ACPI CA Core Subsystem: 14776 14777Fixed a problem where the namespace mutex could be released at the 14778wrong time during execution of AcpiRemoveAddressSpaceHandler. 14779 14780Added optional thread ID output for debug traces, to simplify 14781debugging of multiple threads. Added context switch notification 14782when the debug code realizes that a different thread is now 14783executing ACPI code. 14784 14785Some additional external data types have been prefixed with the 14786string "ACPI_" for consistency. This may effect existing code. 14787The data types affected are the external callback typedefs - e.g., 14788 14789WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 14790 14791 Linux: 14792 14793Fixed an issue with the OSL semaphore implementation where a 14794thread was waking up with an error from receiving a SIGCHLD 14795signal. 14796 14797Linux version of ACPI CA now uses the system C library for string 14798manipulation routines instead of a local implementation. 14799 14800Cleaned up comments and removed TBDs. 14801 14802 ASL Compiler, version X2017: 14803 14804Enhanced error detection and reporting for all file I/O 14805operations. 14806 14807 Documentation: 14808 14809Programmer Reference updated to version 1.06. 14810 14811 14812 14813------------------------------------------ 14814Summary of changes for this label: 04_13_01 14815 14816 ACPI CA Core Subsystem: 14817 14818Restructured support for BufferFields and RegionFields. 14819BankFields support is now fully operational. All known 32-bit 14820limitations on field sizes have been removed. Both BufferFields 14821and (Operation) RegionFields are now supported by the same field 14822management code. 14823 14824Resource support now supports QWORD address and IO resources. The 1482516/32/64 bit address structures and the Extended IRQ structure 14826have been changed to properly handle Source Resource strings. 14827 14828A ThreadId of -1 is now used to indicate a "mutex not acquired" 14829condition internally and must never be returned by AcpiOsThreadId. 14830This reserved value was changed from 0 since Unix systems allow a 14831thread ID of 0. 14832 14833Linux: 14834 14835Driver code reorganized to enhance portability 14836 14837Added a kernel configuration option to control ACPI_DEBUG 14838 14839Fixed the EC driver to honor _GLK. 14840 14841ASL Compiler, version X2016: 14842 14843Fixed support for the "FixedHw" keyword. Previously, the FixedHw 14844address space was set to 0, not 0x7f as it should be. 14845 14846 ------------------------------------------ 14847Summary of changes for this label: 03_13_01 14848 14849 ACPI CA Core Subsystem: 14850 14851During ACPI initialization, the _SB_._INI method is now run if 14852present. 14853 14854Notify handler fix - notifies are deferred until the parent method 14855completes execution. This fixes the "mutex already acquired" 14856issue seen occasionally. 14857 14858Part of the "implicit conversion" rules in ACPI 2.0 have been 14859found to cause compatibility problems with existing ASL/AML. The 14860convert "result-to-target-type" implementation has been removed 14861for stores to method Args and Locals. Source operand conversion 14862is still fully implemented. Possible changes to ACPI 2.0 14863specification pending. 14864 14865Fix to AcpiRsCalculatePciRoutingTableLength to return correct 14866length. 14867 14868Fix for compiler warnings for 64-bit compiles. 14869 14870 Linux: 14871 14872/proc output aligned for easier parsing. 14873 14874Release-version compile problem fixed. 14875 14876New kernel configuration options documented in Configure.help. 14877 14878IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 14879context" message. 14880 14881 OSPM: 14882 14883Power resource driver integrated with bus manager. 14884 14885Fixed kernel fault during active cooling for thermal zones. 14886 14887Source Code: 14888 14889The source code tree has been restructured. 14890 14891 14892 14893------------------------------------------ 14894Summary of changes for this label: 03_02_01 14895 14896 Linux OS Services Layer (OSL): 14897 14898Major revision of all Linux-specific code. 14899 14900Modularized all ACPI-specific drivers. 14901 14902Added new thermal zone and power resource drivers. 14903 14904Revamped /proc interface (new functionality is under /proc/acpi). 14905 14906New kernel configuration options. 14907 14908 Linux known issues: 14909 14910New kernel configuration options not documented in Configure.help 14911yet. 14912 14913 14914Module dependencies not currently implemented. If used, they 14915should be loaded in this order: busmgr, power, ec, system, 14916processor, battery, ac_adapter, button, thermal. 14917 14918Modules will not load if CONFIG_MODVERSION is set. 14919 14920IBM 600E - entering S5 may reboot instead of shutting down. 14921 14922IBM 600E - Sleep button may generate "Invalid <NULL> context" 14923message. 14924 14925Some systems may fail with "execution mutex already acquired" 14926message. 14927 14928 ACPI CA Core Subsystem: 14929 14930Added a new OSL Interface, AcpiOsGetThreadId. This was required 14931for the deadlock detection code. Defined to return a non-zero, 32- 14932bit thread ID for the currently executing thread. May be a non- 14933zero constant integer on single-thread systems. 14934 14935Implemented deadlock detection for internal subsystem mutexes. We 14936may add conditional compilation for this code (debug only) later. 14937 14938ASL/AML Mutex object semantics are now fully supported. This 14939includes multiple acquires/releases by owner and support for the 14940 14941Mutex SyncLevel parameter. 14942 14943A new "Force Release" mechanism automatically frees all ASL 14944Mutexes that have been acquired but not released when a thread 14945exits the interpreter. This forces conformance to the ACPI spec 14946("All mutexes must be released when an invocation exits") and 14947prevents deadlocked ASL threads. This mechanism can be expanded 14948(later) to monitor other resource acquisitions if OEM ASL code 14949continues to misbehave (which it will). 14950 14951Several new ACPI exception codes have been added for the Mutex 14952support. 14953 14954Recursive method calls are now allowed and supported (the ACPI 14955spec does in fact allow recursive method calls.) The number of 14956recursive calls is subject to the restrictions imposed by the 14957SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 14958parameter. 14959 14960Implemented support for the SyncLevel parameter for control 14961methods (ACPI 2.0 feature) 14962 14963Fixed a deadlock problem when multiple threads attempted to use 14964the interpreter. 14965 14966Fixed a problem where the string length of a String package 14967element was not always set in a package returned from 14968AcpiEvaluateObject. 14969 14970Fixed a problem where the length of a String package element was 14971not always included in the length of the overall package returned 14972from AcpiEvaluateObject. 14973 14974Added external interfaces (Acpi*) to the ACPI debug memory 14975manager. This manager keeps a list of all outstanding 14976allocations, and can therefore detect memory leaks and attempts to 14977free memory blocks more than once. Useful for code such as the 14978power manager, etc. May not be appropriate for device drivers. 14979Performance with the debug code enabled is slow. 14980 14981The ACPI Global Lock is now an optional hardware element. 14982 14983 ASL Compiler Version X2015: 14984 14985Integrated changes to allow the compiler to be generated on 14986multiple platforms. 14987 14988Linux makefile added to generate the compiler on Linux 14989 14990 Source Code: 14991 14992All platform-specific headers have been moved to their own 14993subdirectory, Include/Platform. 14994 14995New source file added, Interpreter/ammutex.c 14996 14997New header file, Include/acstruct.h 14998 14999 Documentation: 15000 15001The programmer reference has been updated for the following new 15002interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 15003 15004 ------------------------------------------ 15005Summary of changes for this label: 02_08_01 15006 15007Core ACPI CA Subsystem: Fixed a problem where an error was 15008incorrectly returned if the return resource buffer was larger than 15009the actual data (in the resource interfaces). 15010 15011References to named objects within packages are resolved to the 15012 15013full pathname string before packages are returned directly (via 15014the AcpiEvaluateObject interface) or indirectly via the resource 15015interfaces. 15016 15017Linux OS Services Layer (OSL): 15018 15019Improved /proc battery interface. 15020 15021 15022Added C-state debugging output and other miscellaneous fixes. 15023 15024ASL Compiler Version X2014: 15025 15026All defined method arguments can now be used as local variables, 15027including the ones that are not actually passed in as parameters. 15028The compiler tracks initialization of the arguments and issues an 15029exception if they are used without prior assignment (just like 15030locals). 15031 15032The -o option now specifies a filename prefix that is used for all 15033output files, including the AML output file. Otherwise, the 15034default behavior is as follows: 1) the AML goes to the file 15035specified in the DSDT. 2) all other output files use the input 15036source filename as the base. 15037 15038 ------------------------------------------ 15039Summary of changes for this label: 01_25_01 15040 15041Core ACPI CA Subsystem: Restructured the implementation of object 15042store support within the interpreter. This includes support for 15043the Store operator as well as any ASL operators that include a 15044target operand. 15045 15046Partially implemented support for Implicit Result-to-Target 15047conversion. This is when a result object is converted on the fly 15048to the type of an existing target object. Completion of this 15049support is pending further analysis of the ACPI specification 15050concerning this matter. 15051 15052CPU-specific code has been removed from the subsystem (hardware 15053directory). 15054 15055New Power Management Timer functions added 15056 15057Linux OS Services Layer (OSL): Moved system state transition code 15058to the core, fixed it, and modified Linux OSL accordingly. 15059 15060Fixed C2 and C3 latency calculations. 15061 15062 15063We no longer use the compilation date for the version message on 15064initialization, but retrieve the version from AcpiGetSystemInfo(). 15065 15066Incorporated for fix Sony VAIO machines. 15067 15068Documentation: The Programmer Reference has been updated and 15069reformatted. 15070 15071 15072ASL Compiler: Version X2013: Fixed a problem where the line 15073numbering and error reporting could get out of sync in the 15074presence of multiple include files. 15075 15076 ------------------------------------------ 15077Summary of changes for this label: 01_15_01 15078 15079Core ACPI CA Subsystem: 15080 15081Implemented support for type conversions in the execution of the 15082ASL Concatenate operator (The second operand is converted to 15083match the type of the first operand before concatenation.) 15084 15085Support for implicit source operand conversion is partially 15086implemented. The ASL source operand types Integer, Buffer, and 15087String are freely interchangeable for most ASL operators and are 15088converted by the interpreter on the fly as required. Implicit 15089Target operand conversion (where the result is converted to the 15090target type before storing) is not yet implemented. 15091 15092Support for 32-bit and 64-bit BCD integers is implemented. 15093 15094Problem fixed where a field read on an aligned field could cause a 15095read past the end of the field. 15096 15097New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 15098does not return a value, but the caller expects one. (The ASL 15099compiler flags this as a warning.) 15100 15101ASL Compiler: 15102 15103Version X2011: 151041. Static typechecking of all operands is implemented. This 15105prevents the use of invalid objects (such as using a Package where 15106an Integer is required) at compile time instead of at interpreter 15107run-time. 151082. The ASL source line is printed with ALL errors and warnings. 151093. Bug fix for source EOF without final linefeed. 151104. Debug option is split into a parse trace and a namespace trace. 151115. Namespace output option (-n) includes initial values for 15112integers and strings. 151136. Parse-only option added for quick syntax checking. 151147. Compiler checks for duplicate ACPI name declarations 15115 15116Version X2012: 151171. Relaxed typechecking to allow interchangeability between 15118strings, integers, and buffers. These types are now converted by 15119the interpreter at runtime. 151202. Compiler reports time taken by each internal subsystem in the 15121debug output file. 15122 15123 15124 ------------------------------------------ 15125Summary of changes for this label: 12_14_00 15126 15127ASL Compiler: 15128 15129This is the first official release of the compiler. Since the 15130compiler requires elements of the Core Subsystem, this label 15131synchronizes everything. 15132 15133------------------------------------------ 15134Summary of changes for this label: 12_08_00 15135 15136 15137Fixed a problem where named references within the ASL definition 15138of both OperationRegions and CreateXXXFields did not work 15139properly. The symptom was an AE_AML_OPERAND_TYPE during 15140initialization of the region/field. This is similar (but not 15141related internally) to the problem that was fixed in the last 15142label. 15143 15144Implemented both 32-bit and 64-bit support for the BCD ASL 15145functions ToBCD and FromBCD. 15146 15147Updated all legal headers to include "2000" in the copyright 15148years. 15149 15150 ------------------------------------------ 15151Summary of changes for this label: 12_01_00 15152 15153Fixed a problem where method invocations within the ASL definition 15154of both OperationRegions and CreateXXXFields did not work 15155properly. The symptom was an AE_AML_OPERAND_TYPE during 15156initialization of the region/field: 15157 15158 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 15159[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 15160(0x3005) 15161 15162Fixed a problem where operators with more than one nested 15163subexpression would fail. The symptoms were varied, by mostly 15164AE_AML_OPERAND_TYPE errors. This was actually a rather serious 15165problem that has gone unnoticed until now. 15166 15167 Subtract (Add (1,2), Multiply (3,4)) 15168 15169Fixed a problem where AcpiGetHandle didn't quite get fixed in the 15170previous build (The prefix part of a relative path was handled 15171incorrectly). 15172 15173Fixed a problem where Operation Region initialization failed if 15174the operation region name was a "namepath" instead of a simple 15175"nameseg". Symptom was an AE_NO_OPERAND error. 15176 15177Fixed a problem where an assignment to a local variable via the 15178indirect RefOf mechanism only worked for the first such 15179assignment. Subsequent assignments were ignored. 15180 15181 ------------------------------------------ 15182Summary of changes for this label: 11_15_00 15183 15184ACPI 2.0 table support with backwards support for ACPI 1.0 and the 151850.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 15186the AML interpreter does NOT have support for the new 2.0 ASL 15187grammar terms at this time. 15188 15189All ACPI hardware access is via the GAS structures in the ACPI 2.0 15190FADT. 15191 15192All physical memory addresses across all platforms are now 64 bits 15193wide. Logical address width remains dependent on the platform 15194(i.e., "void *"). 15195 15196AcpiOsMapMemory interface changed to a 64-bit physical address. 15197 15198The AML interpreter integer size is now 64 bits, as per the ACPI 151992.0 specification. 15200 15201For backwards compatibility with ACPI 1.0, ACPI tables with a 15202revision number less than 2 use 32-bit integers only. 15203 15204Fixed a problem where the evaluation of OpRegion operands did not 15205always resolve them to numbers properly. 15206 15207------------------------------------------ 15208Summary of changes for this label: 10_20_00 15209 15210Fix for CBN_._STA issue. This fix will allow correct access to 15211CBN_ OpRegions when the _STA returns 0x8. 15212 15213Support to convert ACPI constants (Ones, Zeros, One) to actual 15214values before a package object is returned 15215 15216Fix for method call as predicate to if/while construct causing 15217incorrect if/while behavior 15218 15219Fix for Else block package lengths sometimes calculated wrong (if 15220block > 63 bytes) 15221 15222Fix for Processor object length field, was always zero 15223 15224Table load abort if FACP sanity check fails 15225 15226Fix for problem with Scope(name) if name already exists 15227 15228Warning emitted if a named object referenced cannot be found 15229(resolved) during method execution. 15230 15231 15232 15233 15234 15235------------------------------------------ 15236Summary of changes for this label: 9_29_00 15237 15238New table initialization interfaces: AcpiInitializeSubsystem no 15239longer has any parameters AcpiFindRootPointer - Find the RSDP (if 15240necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 15241>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 15242AcpiLoadTables 15243 15244Note: These interface changes require changes to all existing OSDs 15245 15246The PCI_Config default address space handler is always installed 15247at the root namespace object. 15248 15249------------------------------------------- 15250Summary of changes for this label: 09_15_00 15251 15252The new initialization architecture is implemented. New 15253interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 15254AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 15255 15256(Namespace is automatically loaded when a table is loaded) 15257 15258The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1525952 bytes to 32 bytes. There is usually one of these for every 15260namespace object, so the memory savings is significant. 15261 15262Implemented just-in-time evaluation of the CreateField operators. 15263 15264Bug fixes for IA-64 support have been integrated. 15265 15266Additional code review comments have been implemented 15267 15268The so-called "third pass parse" has been replaced by a final walk 15269through the namespace to initialize all operation regions (address 15270spaces) and fields that have not yet been initialized during the 15271execution of the various _INI and REG methods. 15272 15273New file - namespace/nsinit.c 15274 15275------------------------------------------- 15276Summary of changes for this label: 09_01_00 15277 15278Namespace manager data structures have been reworked to change the 15279primary object from a table to a single object. This has 15280resulted in dynamic memory savings of 3X within the namespace and 152812X overall in the ACPI CA subsystem. 15282 15283Fixed problem where the call to AcpiEvFindPciRootBuses was 15284inadvertently left commented out. 15285 15286Reduced the warning count when generating the source with the GCC 15287compiler. 15288 15289Revision numbers added to each module header showing the 15290SourceSafe version of the file. Please refer to this version 15291number when giving us feedback or comments on individual modules. 15292 15293The main object types within the subsystem have been renamed to 15294clarify their purpose: 15295 15296ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 15297ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 15298ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 15299 15300NOTE: no changes to the initialization sequence are included in 15301this label. 15302 15303------------------------------------------- 15304Summary of changes for this label: 08_23_00 15305 15306Fixed problem where TerminateControlMethod was being called 15307multiple times per method 15308 15309Fixed debugger problem where single stepping caused a semaphore to 15310be oversignalled 15311 15312Improved performance through additional parse object caching - 15313added ACPI_EXTENDED_OP type 15314 15315------------------------------------------- 15316Summary of changes for this label: 08_10_00 15317 15318Parser/Interpreter integration: Eliminated the creation of 15319complete parse trees for ACPI tables and control methods. 15320Instead, parse subtrees are created and then deleted as soon as 15321they are processed (Either entered into the namespace or executed 15322by the interpreter). This reduces the use of dynamic kernel 15323memory significantly. (about 10X) 15324 15325Exception codes broken into classes and renumbered. Be sure to 15326recompile all code that includes acexcep.h. Hopefully we won't 15327have to renumber the codes again now that they are split into 15328classes (environment, programmer, AML code, ACPI table, and 15329internal). 15330 15331Fixed some additional alignment issues in the Resource Manager 15332subcomponent 15333 15334Implemented semaphore tracking in the AcpiExec utility, and fixed 15335several places where mutexes/semaphores were being unlocked 15336without a corresponding lock operation. There are no known 15337semaphore or mutex "leaks" at this time. 15338 15339Fixed the case where an ASL Return operator is used to return an 15340unnamed package. 15341 15342------------------------------------------- 15343Summary of changes for this label: 07_28_00 15344 15345Fixed a problem with the way addresses were calculated in 15346AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 15347manifested itself when a Field was created with WordAccess or 15348DwordAccess, but the field unit defined within the Field was less 15349 15350than a Word or Dword. 15351 15352Fixed a problem in AmlDumpOperands() module's loop to pull 15353operands off of the operand stack to display information. The 15354problem manifested itself as a TLB error on 64-bit systems when 15355accessing an operand stack with two or more operands. 15356 15357Fixed a problem with the PCI configuration space handlers where 15358context was getting confused between accesses. This required a 15359change to the generic address space handler and address space 15360setup definitions. Handlers now get both a global handler context 15361(this is the one passed in by the user when executing 15362AcpiInstallAddressSpaceHandler() and a specific region context 15363that is unique to each region (For example, the _ADR, _SEG and 15364_BBN values associated with a specific region). The generic 15365function definitions have changed to the following: 15366 15367typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 15368UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 15369*HandlerContext, // This used to be void *Context void 15370*RegionContext); // This is an additional parameter 15371 15372typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 15373RegionHandle, UINT32 Function, void *HandlerContext, void 15374**RegionContext); // This used to be **ReturnContext 15375 15376------------------------------------------- 15377Summary of changes for this label: 07_21_00 15378 15379Major file consolidation and rename. All files within the 15380interpreter have been renamed as well as most header files. This 15381was done to prevent collisions with existing files in the host 15382OSs -- filenames such as "config.h" and "global.h" seem to be 15383quite common. The VC project files have been updated. All 15384makefiles will require modification. 15385 15386The parser/interpreter integration continues in Phase 5 with the 15387implementation of a complete 2-pass parse (the AML is parsed 15388twice) for each table; This avoids the construction of a huge 15389parse tree and therefore reduces the amount of dynamic memory 15390required by the subsystem. Greater use of the parse object cache 15391means that performance is unaffected. 15392 15393Many comments from the two code reviews have been rolled in. 15394 15395The 64-bit alignment support is complete. 15396 15397------------------------------------------- 15398Summary of changes for this label: 06_30_00 15399 15400With a nod and a tip of the hat to the technology of yesteryear, 15401we've added support in the source code for 80 column output 15402devices. The code is now mostly constrained to 80 columns or 15403less to support environments and editors that 1) cannot display 15404or print more than 80 characters on a single line, and 2) cannot 15405disable line wrapping. 15406 15407A major restructuring of the namespace data structure has been 15408completed. The result is 1) cleaner and more 15409understandable/maintainable code, and 2) a significant reduction 15410in the dynamic memory requirement for each named ACPI object 15411(almost half). 15412 15413------------------------------------------- 15414Summary of changes for this label: 06_23_00 15415 15416Linux support has been added. In order to obtain approval to get 15417the ACPI CA subsystem into the Linux kernel, we've had to make 15418quite a few changes to the base subsystem that will affect all 15419users (all the changes are generic and OS- independent). The 15420effects of these global changes have been somewhat far reaching. 15421Files have been merged and/or renamed and interfaces have been 15422renamed. The major changes are described below. 15423 15424Osd* interfaces renamed to AcpiOs* to eliminate namespace 15425pollution/confusion within our target kernels. All OSD 15426interfaces must be modified to match the new naming convention. 15427 15428Files merged across the subsystem. A number of the smaller source 15429and header files have been merged to reduce the file count and 15430increase the density of the existing files. There are too many 15431to list here. In general, makefiles that call out individual 15432files will require rebuilding. 15433 15434Interpreter files renamed. All interpreter files now have the 15435prefix am* instead of ie* and is*. 15436 15437Header files renamed: The acapi.h file is now acpixf.h. The 15438acpiosd.h file is now acpiosxf.h. We are removing references to 15439the acronym "API" since it is somewhat windowsy. The new name is 15440"external interface" or xface or xf in the filenames.j 15441 15442 15443All manifest constants have been forced to upper case (some were 15444mixed case.) Also, the string "ACPI_" has been prepended to many 15445(not all) of the constants, typedefs, and structs. 15446 15447The globals "DebugLevel" and "DebugLayer" have been renamed 15448"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 15449 15450All other globals within the subsystem are now prefixed with 15451"AcpiGbl_" Internal procedures within the subsystem are now 15452prefixed with "Acpi" (with only a few exceptions). The original 15453two-letter abbreviation for the subcomponent remains after "Acpi" 15454- for example, CmCallocate became AcpiCmCallocate. 15455 15456Added a source code translation/conversion utility. Used to 15457generate the Linux source code, it can be modified to generate 15458other types of source as well. Can also be used to cleanup 15459existing source by removing extraneous spaces and blank lines. 15460Found in tools/acpisrc/* 15461 15462OsdUnMapMemory was renamed to OsdUnmapMemory and then 15463AcpiOsUnmapMemory. (UnMap became Unmap). 15464 15465A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 15466When set to one, this indicates that the caller wants to use the 15467 15468semaphore as a mutex, not a counting semaphore. ACPI CA uses 15469both types. However, implementers of this call may want to use 15470different OS primitives depending on the type of semaphore 15471requested. For example, some operating systems provide separate 15472 15473"mutex" and "semaphore" interfaces - where the mutex interface is 15474much faster because it doesn't have all the overhead of a full 15475semaphore implementation. 15476 15477Fixed a deadlock problem where a method that accesses the PCI 15478address space can block forever if it is the first access to the 15479space. 15480 15481------------------------------------------- 15482Summary of changes for this label: 06_02_00 15483 15484Support for environments that cannot handle unaligned data 15485accesses (e.g. firmware and OS environments devoid of alignment 15486handler technology namely SAL/EFI and the IA-64 Linux kernel) has 15487been added (via configurable macros) in these three areas: - 15488Transfer of data from the raw AML byte stream is done via byte 15489moves instead of word/dword/qword moves. - External objects are 15490aligned within the user buffer, including package elements (sub- 15491objects). - Conversion of name strings to UINT32 Acpi Names is now 15492done byte-wise. 15493 15494The Store operator was modified to mimic Microsoft's 15495implementation when storing to a Buffer Field. 15496 15497Added a check of the BM_STS bit before entering C3. 15498 15499The methods subdirectory has been obsoleted and removed. A new 15500file, cmeval.c subsumes the functionality. 15501 15502A 16-bit (DOS) version of AcpiExec has been developed. The 15503makefile is under the acpiexec directory. 15504