drivers/acpi/include/acobject.h

   1
   2 /******************************************************************************
   3  *
   4  * Name: acobject.h - Definition of ACPI_OPERAND_OBJECT  (Internal object only)
   5  *
   6  *****************************************************************************/
   7
   8 /******************************************************************************
   9  *
  10  * 1. Copyright Notice
  11  *
  12  * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
  13  * All rights reserved.
  14  *
  15  * 2. License
  16  *
  17  * 2.1. This is your license from Intel Corp. under its intellectual property
  18  * rights.  You may have additional license terms from the party that provided
  19  * you this software, covering your right to use that party's intellectual
  20  * property rights.
  21  *
  22  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  23  * copy of the source code appearing in this file ("Covered Code") an
  24  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  25  * base code distributed originally by Intel ("Original Intel Code") to copy,
  26  * make derivatives, distribute, use and display any portion of the Covered
  27  * Code in any form, with the right to sublicense such rights; and
  28  *
  29  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  30  * license (with the right to sublicense), under only those claims of Intel
  31  * patents that are infringed by the Original Intel Code, to make, use, sell,
  32  * offer to sell, and import the Covered Code and derivative works thereof
  33  * solely to the minimum extent necessary to exercise the above copyright
  34  * license, and in no event shall the patent license extend to any additions
  35  * to or modifications of the Original Intel Code.  No other license or right
  36  * is granted directly or by implication, estoppel or otherwise;
  37  *
  38  * The above copyright and patent license is granted only if the following
  39  * conditions are met:
  40  *
  41  * 3. Conditions
  42  *
  43  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  44  * Redistribution of source code of any substantial portion of the Covered
  45  * Code or modification with rights to further distribute source must include
  46  * the above Copyright Notice, the above License, this list of Conditions,
  47  * and the following Disclaimer and Export Compliance provision.  In addition,
  48  * Licensee must cause all Covered Code to which Licensee contributes to
  49  * contain a file documenting the changes Licensee made to create that Covered
  50  * Code and the date of any change.  Licensee must include in that file the
  51  * documentation of any changes made by any predecessor Licensee.  Licensee
  52  * must include a prominent statement that the modification is derived,
  53  * directly or indirectly, from Original Intel Code.
  54  *
  55  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  56  * Redistribution of source code of any substantial portion of the Covered
  57  * Code or modification without rights to further distribute source must
  58  * include the following Disclaimer and Export Compliance provision in the
  59  * documentation and/or other materials provided with distribution.  In
  60  * addition, Licensee may not authorize further sublicense of source of any
  61  * portion of the Covered Code, and must include terms to the effect that the
  62  * license from Licensee to its licensee is limited to the intellectual
  63  * property embodied in the software Licensee provides to its licensee, and
  64  * not to intellectual property embodied in modifications its licensee may
  65  * make.
  66  *
  67  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  68  * substantial portion of the Covered Code or modification must reproduce the
  69  * above Copyright Notice, and the following Disclaimer and Export Compliance
  70  * provision in the documentation and/or other materials provided with the
  71  * distribution.
  72  *
  73  * 3.4. Intel retains all right, title, and interest in and to the Original
  74  * Intel Code.
  75  *
  76  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  77  * Intel shall be used in advertising or otherwise to promote the sale, use or
  78  * other dealings in products derived from or relating to the Covered Code
  79  * without prior written authorization from Intel.
  80  *
  81  * 4. Disclaimer and Export Compliance
  82  *
  83  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  84  * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  85  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
  86  * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
  87  * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
  88  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  89  * PARTICULAR PURPOSE.
  90  *
  91  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  92  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  93  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  94  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  95  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  96  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
  97  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  98  * LIMITED REMEDY.
  99  *
 100  * 4.3. Licensee shall not export, either directly or indirectly, any of this
 101  * software or system incorporating such software without first obtaining any
 102  * required license or other approval from the U. S. Department of Commerce or
 103  * any other agency or department of the United States Government.  In the
 104  * event Licensee exports any such software from the United States or
 105  * re-exports any such software from a foreign destination, Licensee shall
 106  * ensure that the distribution and export/re-export of the software is in
 107  * compliance with all laws, regulations, orders, or other restrictions of the
 108  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 109  * any of its subsidiaries will export/re-export any technical data, process,
 110  * software, or service, directly or indirectly, to any country for which the
 111  * United States government or any agency thereof requires an export license,
 112  * other governmental approval, or letter of assurance, without first obtaining
 113  * such license, approval or letter.
 114  *
 115  *****************************************************************************/
 116
 117 #ifndef _ACOBJECT_H
 118 #define _ACOBJECT_H
 119
 120 /* acpisrc:StructDefs -- for acpisrc conversion */
 121
 122
 123 /*
 124  * The ACPI_OPERAND_OBJECT is used to pass AML operands from the dispatcher
 125  * to the interpreter, and to keep track of the various handlers such as
 126  * address space handlers and notify handlers. The object is a constant
 127  * size in order to allow it to be cached and reused.
 128  *
 129  * Note: The object is optimized to be aligned and will not work if it is
 130  * byte-packed.
 131  */
 132 #if ACPI_MACHINE_WIDTH == 64
 133 #pragma pack(8)
 134 #else
 135 #pragma pack(4)
 136 #endif
 137
 138 /*******************************************************************************
 139  *
 140  * Common Descriptors
 141  *
 142  ******************************************************************************/
 143
 144 /*
 145  * Common area for all objects.
 146  *
 147  * DescriptorType is used to differentiate between internal descriptors, and
 148  * must be in the same place across all descriptors
 149  *
 150  * Note: The DescriptorType and Type fields must appear in the identical
 151  * position in both the ACPI_NAMESPACE_NODE and ACPI_OPERAND_OBJECT
 152  * structures.
 153  */
 154 #define ACPI_OBJECT_COMMON_HEADER \
 155     union acpi_operand_object       *NextObject;        /* Objects linked to parent NS node */\
 156     UINT8                           DescriptorType;     /* To differentiate various internal objs */\
 157     UINT8                           Type;               /* ACPI_OBJECT_TYPE */\
 158     UINT16                          ReferenceCount;     /* For object deletion management */\
 159     UINT8                           Flags;
 160     /*
 161      * Note: There are 3 bytes available here before the
 162      * next natural alignment boundary (for both 32/64 cases)
 163      */
 164
 165 /* Values for Flag byte above */
 166
 167 #define AOPOBJ_AML_CONSTANT         0x01    /* Integer is an AML constant */
 168 #define AOPOBJ_STATIC_POINTER       0x02    /* Data is part of an ACPI table, don't delete */
 169 #define AOPOBJ_DATA_VALID           0x04    /* Object is intialized and data is valid */
 170 #define AOPOBJ_OBJECT_INITIALIZED   0x08    /* Region is initialized, _REG was run */
 171 #define AOPOBJ_SETUP_COMPLETE       0x10    /* Region setup is complete */
 172 #define AOPOBJ_INVALID              0x20    /* Host OS won't allow a Region address */
 173 #define AOPOBJ_MODULE_LEVEL         0x40    /* Method is actually module-level code */
 174 #define AOPOBJ_MODIFIED_NAMESPACE   0x80    /* Method modified the namespace */
 175
 176
 177 /******************************************************************************
 178  *
 179  * Basic data types
 180  *
 181  *****************************************************************************/
 182
 183 typedef struct acpi_object_common
 184 {
 185     ACPI_OBJECT_COMMON_HEADER
 186
 187 } ACPI_OBJECT_COMMON;
 188
 189
 190 typedef struct acpi_object_integer
 191 {
 192     ACPI_OBJECT_COMMON_HEADER
 193     UINT8                           Fill[3];            /* Prevent warning on some compilers */
 194     UINT64                          Value;
 195
 196 } ACPI_OBJECT_INTEGER;
 197
 198
 199 /*
 200  * Note: The String and Buffer object must be identical through the Pointer
 201  * and length elements.  There is code that depends on this.
 202  *
 203  * Fields common to both Strings and Buffers
 204  */
 205 #define ACPI_COMMON_BUFFER_INFO(_Type) \
 206     _Type                           *Pointer; \
 207     UINT32                          Length;
 208
 209
 210 typedef struct acpi_object_string   /* Null terminated, ASCII characters only */
 211 {
 212     ACPI_OBJECT_COMMON_HEADER
 213     ACPI_COMMON_BUFFER_INFO         (char)              /* String in AML stream or allocated string */
 214
 215 } ACPI_OBJECT_STRING;
 216
 217
 218 typedef struct acpi_object_buffer
 219 {
 220     ACPI_OBJECT_COMMON_HEADER
 221     ACPI_COMMON_BUFFER_INFO         (UINT8)             /* Buffer in AML stream or allocated buffer */
 222     UINT32                          AmlLength;
 223     UINT8                           *AmlStart;
 224     ACPI_NAMESPACE_NODE             *Node;              /* Link back to parent node */
 225
 226 } ACPI_OBJECT_BUFFER;
 227
 228
 229 typedef struct acpi_object_package
 230 {
 231     ACPI_OBJECT_COMMON_HEADER
 232     ACPI_NAMESPACE_NODE             *Node;              /* Link back to parent node */
 233     union acpi_operand_object       **Elements;         /* Array of pointers to AcpiObjects */
 234     UINT8                           *AmlStart;
 235     UINT32                          AmlLength;
 236     UINT32                          Count;              /* # of elements in package */
 237
 238 } ACPI_OBJECT_PACKAGE;
 239
 240
 241 /******************************************************************************
 242  *
 243  * Complex data types
 244  *
 245  *****************************************************************************/
 246
 247 typedef struct acpi_object_event
 248 {
 249     ACPI_OBJECT_COMMON_HEADER
 250     ACPI_SEMAPHORE                  OsSemaphore;        /* Actual OS synchronization object */
 251
 252 } ACPI_OBJECT_EVENT;
 253
 254
 255 typedef struct acpi_object_mutex
 256 {
 257     ACPI_OBJECT_COMMON_HEADER
 258     UINT8                           SyncLevel;          /* 0-15, specified in Mutex() call */
 259     UINT16                          AcquisitionDepth;   /* Allow multiple Acquires, same thread */
 260     ACPI_MUTEX                      OsMutex;            /* Actual OS synchronization object */
 261     ACPI_THREAD_ID                  ThreadId;           /* Current owner of the mutex */
 262     struct acpi_thread_state        *OwnerThread;       /* Current owner of the mutex */
 263     union acpi_operand_object       *Prev;              /* Link for list of acquired mutexes */
 264     union acpi_operand_object       *Next;              /* Link for list of acquired mutexes */
 265     ACPI_NAMESPACE_NODE             *Node;              /* Containing namespace node */
 266     UINT8                           OriginalSyncLevel;  /* Owner's original sync level (0-15) */
 267
 268 } ACPI_OBJECT_MUTEX;
 269
 270
 271 typedef struct acpi_object_region
 272 {
 273     ACPI_OBJECT_COMMON_HEADER
 274     UINT8                           SpaceId;
 275     ACPI_NAMESPACE_NODE             *Node;              /* Containing namespace node */
 276     union acpi_operand_object       *Handler;           /* Handler for region access */
 277     union acpi_operand_object       *Next;
 278     ACPI_PHYSICAL_ADDRESS           Address;
 279     UINT32                          Length;
 280
 281 } ACPI_OBJECT_REGION;
 282
 283
 284 typedef struct acpi_object_method
 285 {
 286     ACPI_OBJECT_COMMON_HEADER
 287     UINT8                           MethodFlags;
 288     UINT8                           ParamCount;
 289     UINT8                           SyncLevel;
 290     union acpi_operand_object       *Mutex;
 291     UINT8                           *AmlStart;
 292     union
 293     {
 294         ACPI_INTERNAL_METHOD            Implementation;
 295         union acpi_operand_object       *Handler;
 296     } Extra;
 297
 298     UINT32                          AmlLength;
 299     UINT8                           ThreadCount;
 300     ACPI_OWNER_ID                   OwnerId;
 301
 302 } ACPI_OBJECT_METHOD;
 303
 304
 305 /******************************************************************************
 306  *
 307  * Objects that can be notified.  All share a common NotifyInfo area.
 308  *
 309  *****************************************************************************/
 310
 311 /*
 312  * Common fields for objects that support ASL notifications
 313  */
 314 #define ACPI_COMMON_NOTIFY_INFO \
 315     union acpi_operand_object       *SystemNotify;      /* Handler for system notifies */\
 316     union acpi_operand_object       *DeviceNotify;      /* Handler for driver notifies */\
 317     union acpi_operand_object       *Handler;           /* Handler for Address space */
 318
 319
 320 typedef struct acpi_object_notify_common    /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */
 321 {
 322     ACPI_OBJECT_COMMON_HEADER
 323     ACPI_COMMON_NOTIFY_INFO
 324
 325 } ACPI_OBJECT_NOTIFY_COMMON;
 326
 327
 328 typedef struct acpi_object_device
 329 {
 330     ACPI_OBJECT_COMMON_HEADER
 331     ACPI_COMMON_NOTIFY_INFO
 332     ACPI_GPE_BLOCK_INFO             *GpeBlock;
 333
 334 } ACPI_OBJECT_DEVICE;
 335
 336
 337 typedef struct acpi_object_power_resource
 338 {
 339     ACPI_OBJECT_COMMON_HEADER
 340     ACPI_COMMON_NOTIFY_INFO
 341     UINT32                          SystemLevel;
 342     UINT32                          ResourceOrder;
 343
 344 } ACPI_OBJECT_POWER_RESOURCE;
 345
 346
 347 typedef struct acpi_object_processor
 348 {
 349     ACPI_OBJECT_COMMON_HEADER
 350
 351     /* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */
 352
 353     UINT8                           ProcId;
 354     UINT8                           Length;
 355     ACPI_COMMON_NOTIFY_INFO
 356     ACPI_IO_ADDRESS                 Address;
 357
 358 } ACPI_OBJECT_PROCESSOR;
 359
 360
 361 typedef struct acpi_object_thermal_zone
 362 {
 363     ACPI_OBJECT_COMMON_HEADER
 364     ACPI_COMMON_NOTIFY_INFO
 365
 366 } ACPI_OBJECT_THERMAL_ZONE;
 367
 368
 369 /******************************************************************************
 370  *
 371  * Fields.  All share a common header/info field.
 372  *
 373  *****************************************************************************/
 374
 375 /*
 376  * Common bitfield for the field objects
 377  * "Field Datum"  -- a datum from the actual field object
 378  * "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field
 379  */
 380 #define ACPI_COMMON_FIELD_INFO \
 381     UINT8                           FieldFlags;         /* Access, update, and lock bits */\
 382     UINT8                           Attribute;          /* From AccessAs keyword */\
 383     UINT8                           AccessByteWidth;    /* Read/Write size in bytes */\
 384     ACPI_NAMESPACE_NODE             *Node;              /* Link back to parent node */\
 385     UINT32                          BitLength;          /* Length of field in bits */\
 386     UINT32                          BaseByteOffset;     /* Byte offset within containing object */\
 387     UINT32                          Value;              /* Value to store into the Bank or Index register */\
 388     UINT8                           StartFieldBitOffset;/* Bit offset within first field datum (0-63) */\
 389     UINT8                           AccessBitWidth;     /* Read/Write size in bits (8-64) */
 390
 391
 392 typedef struct acpi_object_field_common                 /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */
 393 {
 394     ACPI_OBJECT_COMMON_HEADER
 395     ACPI_COMMON_FIELD_INFO
 396     union acpi_operand_object       *RegionObj;         /* Parent Operation Region object (REGION/BANK fields only) */
 397
 398 } ACPI_OBJECT_FIELD_COMMON;
 399
 400
 401 typedef struct acpi_object_region_field
 402 {
 403     ACPI_OBJECT_COMMON_HEADER
 404     ACPI_COMMON_FIELD_INFO
 405     union acpi_operand_object       *RegionObj;         /* Containing OpRegion object */
 406
 407 } ACPI_OBJECT_REGION_FIELD;
 408
 409
 410 typedef struct acpi_object_bank_field
 411 {
 412     ACPI_OBJECT_COMMON_HEADER
 413     ACPI_COMMON_FIELD_INFO
 414     union acpi_operand_object       *RegionObj;         /* Containing OpRegion object */
 415     union acpi_operand_object       *BankObj;           /* BankSelect Register object */
 416
 417 } ACPI_OBJECT_BANK_FIELD;
 418
 419
 420 typedef struct acpi_object_index_field
 421 {
 422     ACPI_OBJECT_COMMON_HEADER
 423     ACPI_COMMON_FIELD_INFO
 424
 425     /*
 426      * No "RegionObj" pointer needed since the Index and Data registers
 427      * are each field definitions unto themselves.
 428      */
 429     union acpi_operand_object       *IndexObj;          /* Index register */
 430     union acpi_operand_object       *DataObj;           /* Data register */
 431
 432 } ACPI_OBJECT_INDEX_FIELD;
 433
 434
 435 /* The BufferField is different in that it is part of a Buffer, not an OpRegion */
 436
 437 typedef struct acpi_object_buffer_field
 438 {
 439     ACPI_OBJECT_COMMON_HEADER
 440     ACPI_COMMON_FIELD_INFO
 441     union acpi_operand_object       *BufferObj;         /* Containing Buffer object */
 442
 443 } ACPI_OBJECT_BUFFER_FIELD;
 444
 445
 446 /******************************************************************************
 447  *
 448  * Objects for handlers
 449  *
 450  *****************************************************************************/
 451
 452 typedef struct acpi_object_notify_handler
 453 {
 454     ACPI_OBJECT_COMMON_HEADER
 455     ACPI_NAMESPACE_NODE             *Node;              /* Parent device */
 456     ACPI_NOTIFY_HANDLER             Handler;
 457     void                            *Context;
 458
 459 } ACPI_OBJECT_NOTIFY_HANDLER;
 460
 461
 462 typedef struct acpi_object_addr_handler
 463 {
 464     ACPI_OBJECT_COMMON_HEADER
 465     UINT8                           SpaceId;
 466     UINT8                           HandlerFlags;
 467     ACPI_ADR_SPACE_HANDLER          Handler;
 468     ACPI_NAMESPACE_NODE             *Node;              /* Parent device */
 469     void                            *Context;
 470     ACPI_ADR_SPACE_SETUP            Setup;
 471     union acpi_operand_object       *RegionList;        /* regions using this handler */
 472     union acpi_operand_object       *Next;
 473
 474 } ACPI_OBJECT_ADDR_HANDLER;
 475
 476 /* Flags for address handler (HandlerFlags) */
 477
 478 #define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED  0x01
 479
 480
 481 /******************************************************************************
 482  *
 483  * Special internal objects
 484  *
 485  *****************************************************************************/
 486
 487 /*
 488  * The Reference object is used for these opcodes:
 489  * Arg[0-6], Local[0-7], IndexOp, NameOp, RefOfOp, LoadOp, LoadTableOp, DebugOp
 490  * The Reference.Class differentiates these types.
 491  */
 492 typedef struct acpi_object_reference
 493 {
 494     ACPI_OBJECT_COMMON_HEADER
 495      UINT8                           Class;              /* Reference Class */
 496      UINT8                           TargetType;         /* Used for Index Op */
 497      UINT8                           Reserved;
 498      void                            *Object;            /* NameOp=>HANDLE to obj, IndexOp=>ACPI_OPERAND_OBJECT */
 499      ACPI_NAMESPACE_NODE             *Node;              /* RefOf or Namepath */
 500      union acpi_operand_object       **Where;            /* Target of Index */
 501      UINT32                          Value;              /* Used for Local/Arg/Index/DdbHandle */
 502
 503 } ACPI_OBJECT_REFERENCE;
 504
 505 /* Values for Reference.Class above */
 506
 507 typedef enum
 508 {
 509     ACPI_REFCLASS_LOCAL             = 0,        /* Method local */
 510     ACPI_REFCLASS_ARG               = 1,        /* Method argument */
 511     ACPI_REFCLASS_REFOF             = 2,        /* Result of RefOf() TBD: Split to Ref/Node and Ref/OperandObj? */
 512     ACPI_REFCLASS_INDEX             = 3,        /* Result of Index() */
 513     ACPI_REFCLASS_TABLE             = 4,        /* DdbHandle - Load(), LoadTable() */
 514     ACPI_REFCLASS_NAME              = 5,        /* Reference to a named object */
 515     ACPI_REFCLASS_DEBUG             = 6,        /* Debug object */
 516
 517     ACPI_REFCLASS_MAX               = 6
 518
 519 } ACPI_REFERENCE_CLASSES;
 520
 521
 522 /*
 523  * Extra object is used as additional storage for types that
 524  * have AML code in their declarations (TermArgs) that must be
 525  * evaluated at run time.
 526  *
 527  * Currently: Region and FieldUnit types
 528  */
 529 typedef struct acpi_object_extra
 530 {
 531     ACPI_OBJECT_COMMON_HEADER
 532     ACPI_NAMESPACE_NODE             *Method_REG;        /* _REG method for this region (if any) */
 533     void                            *RegionContext;     /* Region-specific data */
 534     UINT8                           *AmlStart;
 535     UINT32                          AmlLength;
 536
 537 } ACPI_OBJECT_EXTRA;
 538
 539
 540 /* Additional data that can be attached to namespace nodes */
 541
 542 typedef struct acpi_object_data
 543 {
 544     ACPI_OBJECT_COMMON_HEADER
 545     ACPI_OBJECT_HANDLER             Handler;
 546     void                            *Pointer;
 547
 548 } ACPI_OBJECT_DATA;
 549
 550
 551 /* Structure used when objects are cached for reuse */
 552
 553 typedef struct acpi_object_cache_list
 554 {
 555     ACPI_OBJECT_COMMON_HEADER
 556     union acpi_operand_object       *Next;              /* Link for object cache and internal lists*/
 557
 558 } ACPI_OBJECT_CACHE_LIST;
 559
 560
 561 /******************************************************************************
 562  *
 563  * ACPI_OPERAND_OBJECT Descriptor - a giant union of all of the above
 564  *
 565  *****************************************************************************/
 566
 567 typedef union acpi_operand_object
 568 {
 569     ACPI_OBJECT_COMMON                  Common;
 570     ACPI_OBJECT_INTEGER                 Integer;
 571     ACPI_OBJECT_STRING                  String;
 572     ACPI_OBJECT_BUFFER                  Buffer;
 573     ACPI_OBJECT_PACKAGE                 Package;
 574     ACPI_OBJECT_EVENT                   Event;
 575     ACPI_OBJECT_METHOD                  Method;
 576     ACPI_OBJECT_MUTEX                   Mutex;
 577     ACPI_OBJECT_REGION                  Region;
 578     ACPI_OBJECT_NOTIFY_COMMON           CommonNotify;
 579     ACPI_OBJECT_DEVICE                  Device;
 580     ACPI_OBJECT_POWER_RESOURCE          PowerResource;
 581     ACPI_OBJECT_PROCESSOR               Processor;
 582     ACPI_OBJECT_THERMAL_ZONE            ThermalZone;
 583     ACPI_OBJECT_FIELD_COMMON            CommonField;
 584     ACPI_OBJECT_REGION_FIELD            Field;
 585     ACPI_OBJECT_BUFFER_FIELD            BufferField;
 586     ACPI_OBJECT_BANK_FIELD              BankField;
 587     ACPI_OBJECT_INDEX_FIELD             IndexField;
 588     ACPI_OBJECT_NOTIFY_HANDLER          Notify;
 589     ACPI_OBJECT_ADDR_HANDLER            AddressSpace;
 590     ACPI_OBJECT_REFERENCE               Reference;
 591     ACPI_OBJECT_EXTRA                   Extra;
 592     ACPI_OBJECT_DATA                    Data;
 593     ACPI_OBJECT_CACHE_LIST              Cache;
 594
 595     /*
 596      * Add namespace node to union in order to simplify code that accepts both
 597      * ACPI_OPERAND_OBJECTs and ACPI_NAMESPACE_NODEs. The structures share
 598      * a common DescriptorType field in order to differentiate them.
 599      */
 600     ACPI_NAMESPACE_NODE                 Node;
 601
 602 } ACPI_OPERAND_OBJECT;
 603
 604
 605 /******************************************************************************
 606  *
 607  * ACPI_DESCRIPTOR - objects that share a common descriptor identifier
 608  *
 609  *****************************************************************************/
 610
 611 /* Object descriptor types */
 612
 613 #define ACPI_DESC_TYPE_CACHED           0x01        /* Used only when object is cached */
 614 #define ACPI_DESC_TYPE_STATE            0x02
 615 #define ACPI_DESC_TYPE_STATE_UPDATE     0x03
 616 #define ACPI_DESC_TYPE_STATE_PACKAGE    0x04
 617 #define ACPI_DESC_TYPE_STATE_CONTROL    0x05
 618 #define ACPI_DESC_TYPE_STATE_RPSCOPE    0x06
 619 #define ACPI_DESC_TYPE_STATE_PSCOPE     0x07
 620 #define ACPI_DESC_TYPE_STATE_WSCOPE     0x08
 621 #define ACPI_DESC_TYPE_STATE_RESULT     0x09
 622 #define ACPI_DESC_TYPE_STATE_NOTIFY     0x0A
 623 #define ACPI_DESC_TYPE_STATE_THREAD     0x0B
 624 #define ACPI_DESC_TYPE_WALK             0x0C
 625 #define ACPI_DESC_TYPE_PARSER           0x0D
 626 #define ACPI_DESC_TYPE_OPERAND          0x0E
 627 #define ACPI_DESC_TYPE_NAMED            0x0F
 628 #define ACPI_DESC_TYPE_MAX              0x0F
 629
 630
 631 typedef struct acpi_common_descriptor
 632 {
 633     void                            *CommonPointer;
 634     UINT8                           DescriptorType; /* To differentiate various internal objs */
 635
 636 } ACPI_COMMON_DESCRIPTOR;
 637
 638 typedef union acpi_descriptor
 639 {
 640     ACPI_COMMON_DESCRIPTOR          Common;
 641     ACPI_OPERAND_OBJECT             Object;
 642     ACPI_NAMESPACE_NODE             Node;
 643     ACPI_PARSE_OBJECT               Op;
 644
 645 } ACPI_DESCRIPTOR;
 646
 647 #pragma pack()
 648
 649 #endif /* _ACOBJECT_H */