drivers/bus/acpi/acpica/include/acobject.h

   1 /******************************************************************************
   2  *
   3  * Name: acobject.h - Definition of ACPI_OPERAND_OBJECT  (Internal object only)
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2019, Intel Corp.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 #ifndef _ACOBJECT_H
  45 #define _ACOBJECT_H
  46
  47 /* acpisrc:StructDefs -- for acpisrc conversion */
  48
  49
  50 /*
  51  * The ACPI_OPERAND_OBJECT is used to pass AML operands from the dispatcher
  52  * to the interpreter, and to keep track of the various handlers such as
  53  * address space handlers and notify handlers. The object is a constant
  54  * size in order to allow it to be cached and reused.
  55  *
  56  * Note: The object is optimized to be aligned and will not work if it is
  57  * byte-packed.
  58  */
  59 #if ACPI_MACHINE_WIDTH == 64
  60 #pragma pack(8)
  61 #else
  62 #pragma pack(4)
  63 #endif
  64
  65 /*******************************************************************************
  66  *
  67  * Common Descriptors
  68  *
  69  ******************************************************************************/
  70
  71 /*
  72  * Common area for all objects.
  73  *
  74  * DescriptorType is used to differentiate between internal descriptors, and
  75  * must be in the same place across all descriptors
  76  *
  77  * Note: The DescriptorType and Type fields must appear in the identical
  78  * position in both the ACPI_NAMESPACE_NODE and ACPI_OPERAND_OBJECT
  79  * structures.
  80  */
  81 #define ACPI_OBJECT_COMMON_HEADER \
  82     union acpi_operand_object       *NextObject;        /* Objects linked to parent NS node */\
  83     UINT8                           DescriptorType;     /* To differentiate various internal objs */\
  84     UINT8                           Type;               /* ACPI_OBJECT_TYPE */\
  85     UINT16                          ReferenceCount;     /* For object deletion management */\
  86     UINT8                           Flags;
  87     /*
  88      * Note: There are 3 bytes available here before the
  89      * next natural alignment boundary (for both 32/64 cases)
  90      */
  91
  92 /* Values for Flag byte above */
  93
  94 #define AOPOBJ_AML_CONSTANT         0x01    /* Integer is an AML constant */
  95 #define AOPOBJ_STATIC_POINTER       0x02    /* Data is part of an ACPI table, don't delete */
  96 #define AOPOBJ_DATA_VALID           0x04    /* Object is initialized and data is valid */
  97 #define AOPOBJ_OBJECT_INITIALIZED   0x08    /* Region is initialized */
  98 #define AOPOBJ_REG_CONNECTED        0x10    /* _REG was run */
  99 #define AOPOBJ_SETUP_COMPLETE       0x20    /* Region setup is complete */
 100 #define AOPOBJ_INVALID              0x40    /* Host OS won't allow a Region address */
 101
 102
 103 /******************************************************************************
 104  *
 105  * Basic data types
 106  *
 107  *****************************************************************************/
 108
 109 typedef struct acpi_object_common
 110 {
 111     ACPI_OBJECT_COMMON_HEADER
 112
 113 } ACPI_OBJECT_COMMON;
 114
 115
 116 typedef struct acpi_object_integer
 117 {
 118     ACPI_OBJECT_COMMON_HEADER
 119     UINT8                           Fill[3];            /* Prevent warning on some compilers */
 120     UINT64                          Value;
 121
 122 } ACPI_OBJECT_INTEGER;
 123
 124
 125 /*
 126  * Note: The String and Buffer object must be identical through the
 127  * pointer and length elements. There is code that depends on this.
 128  *
 129  * Fields common to both Strings and Buffers
 130  */
 131 #define ACPI_COMMON_BUFFER_INFO(_Type) \
 132     _Type                           *Pointer; \
 133     UINT32                          Length;
 134
 135
 136 /* Null terminated, ASCII characters only */
 137
 138 typedef struct acpi_object_string
 139 {
 140     ACPI_OBJECT_COMMON_HEADER
 141     ACPI_COMMON_BUFFER_INFO         (char)              /* String in AML stream or allocated string */
 142
 143 } ACPI_OBJECT_STRING;
 144
 145
 146 typedef struct acpi_object_buffer
 147 {
 148     ACPI_OBJECT_COMMON_HEADER
 149     ACPI_COMMON_BUFFER_INFO         (UINT8)             /* Buffer in AML stream or allocated buffer */
 150     UINT32                          AmlLength;
 151     UINT8                           *AmlStart;
 152     ACPI_NAMESPACE_NODE             *Node;              /* Link back to parent node */
 153
 154 } ACPI_OBJECT_BUFFER;
 155
 156
 157 typedef struct acpi_object_package
 158 {
 159     ACPI_OBJECT_COMMON_HEADER
 160     ACPI_NAMESPACE_NODE             *Node;              /* Link back to parent node */
 161     union acpi_operand_object       **Elements;         /* Array of pointers to AcpiObjects */
 162     UINT8                           *AmlStart;
 163     UINT32                          AmlLength;
 164     UINT32                          Count;              /* # of elements in package */
 165
 166 } ACPI_OBJECT_PACKAGE;
 167
 168
 169 /******************************************************************************
 170  *
 171  * Complex data types
 172  *
 173  *****************************************************************************/
 174
 175 typedef struct acpi_object_event
 176 {
 177     ACPI_OBJECT_COMMON_HEADER
 178     ACPI_SEMAPHORE                  OsSemaphore;        /* Actual OS synchronization object */
 179
 180 } ACPI_OBJECT_EVENT;
 181
 182
 183 typedef struct acpi_object_mutex
 184 {
 185     ACPI_OBJECT_COMMON_HEADER
 186     UINT8                           SyncLevel;          /* 0-15, specified in Mutex() call */
 187     UINT16                          AcquisitionDepth;   /* Allow multiple Acquires, same thread */
 188     ACPI_MUTEX                      OsMutex;            /* Actual OS synchronization object */
 189     ACPI_THREAD_ID                  ThreadId;           /* Current owner of the mutex */
 190     struct acpi_thread_state        *OwnerThread;       /* Current owner of the mutex */
 191     union acpi_operand_object       *Prev;              /* Link for list of acquired mutexes */
 192     union acpi_operand_object       *Next;              /* Link for list of acquired mutexes */
 193     ACPI_NAMESPACE_NODE             *Node;              /* Containing namespace node */
 194     UINT8                           OriginalSyncLevel;  /* Owner's original sync level (0-15) */
 195
 196 } ACPI_OBJECT_MUTEX;
 197
 198
 199 typedef struct acpi_object_region
 200 {
 201     ACPI_OBJECT_COMMON_HEADER
 202     UINT8                           SpaceId;
 203     ACPI_NAMESPACE_NODE             *Node;              /* Containing namespace node */
 204     union acpi_operand_object       *Handler;           /* Handler for region access */
 205     union acpi_operand_object       *Next;
 206     ACPI_PHYSICAL_ADDRESS           Address;
 207     UINT32                          Length;
 208
 209 } ACPI_OBJECT_REGION;
 210
 211
 212 typedef struct acpi_object_method
 213 {
 214     ACPI_OBJECT_COMMON_HEADER
 215     UINT8                           InfoFlags;
 216     UINT8                           ParamCount;
 217     UINT8                           SyncLevel;
 218     union acpi_operand_object       *Mutex;
 219     union acpi_operand_object       *Node;
 220     UINT8                           *AmlStart;
 221     union
 222     {
 223         ACPI_INTERNAL_METHOD            Implementation;
 224         union acpi_operand_object       *Handler;
 225     } Dispatch;
 226
 227     UINT32                          AmlLength;
 228     UINT8                           ThreadCount;
 229     ACPI_OWNER_ID                   OwnerId;
 230
 231 } ACPI_OBJECT_METHOD;
 232
 233 /* Flags for InfoFlags field above */
 234
 235 #define ACPI_METHOD_MODULE_LEVEL        0x01    /* Method is actually module-level code */
 236 #define ACPI_METHOD_INTERNAL_ONLY       0x02    /* Method is implemented internally (_OSI) */
 237 #define ACPI_METHOD_SERIALIZED          0x04    /* Method is serialized */
 238 #define ACPI_METHOD_SERIALIZED_PENDING  0x08    /* Method is to be marked serialized */
 239 #define ACPI_METHOD_IGNORE_SYNC_LEVEL   0x10    /* Method was auto-serialized at table load time */
 240 #define ACPI_METHOD_MODIFIED_NAMESPACE  0x20    /* Method modified the namespace */
 241
 242
 243 /******************************************************************************
 244  *
 245  * Objects that can be notified. All share a common NotifyInfo area.
 246  *
 247  *****************************************************************************/
 248
 249 /*
 250  * Common fields for objects that support ASL notifications
 251  */
 252 #define ACPI_COMMON_NOTIFY_INFO \
 253     union acpi_operand_object       *NotifyList[2];     /* Handlers for system/device notifies */\
 254     union acpi_operand_object       *Handler;           /* Handler for Address space */
 255
 256 /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */
 257
 258 typedef struct acpi_object_notify_common
 259 {
 260     ACPI_OBJECT_COMMON_HEADER
 261     ACPI_COMMON_NOTIFY_INFO
 262
 263 } ACPI_OBJECT_NOTIFY_COMMON;
 264
 265
 266 typedef struct acpi_object_device
 267 {
 268     ACPI_OBJECT_COMMON_HEADER
 269     ACPI_COMMON_NOTIFY_INFO
 270     ACPI_GPE_BLOCK_INFO             *GpeBlock;
 271
 272 } ACPI_OBJECT_DEVICE;
 273
 274
 275 typedef struct acpi_object_power_resource
 276 {
 277     ACPI_OBJECT_COMMON_HEADER
 278     ACPI_COMMON_NOTIFY_INFO
 279     UINT32                          SystemLevel;
 280     UINT32                          ResourceOrder;
 281
 282 } ACPI_OBJECT_POWER_RESOURCE;
 283
 284
 285 typedef struct acpi_object_processor
 286 {
 287     ACPI_OBJECT_COMMON_HEADER
 288
 289     /* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */
 290
 291     UINT8                           ProcId;
 292     UINT8                           Length;
 293     ACPI_COMMON_NOTIFY_INFO
 294     ACPI_IO_ADDRESS                 Address;
 295
 296 } ACPI_OBJECT_PROCESSOR;
 297
 298
 299 typedef struct acpi_object_thermal_zone
 300 {
 301     ACPI_OBJECT_COMMON_HEADER
 302     ACPI_COMMON_NOTIFY_INFO
 303
 304 } ACPI_OBJECT_THERMAL_ZONE;
 305
 306
 307 /******************************************************************************
 308  *
 309  * Fields. All share a common header/info field.
 310  *
 311  *****************************************************************************/
 312
 313 /*
 314  * Common bitfield for the field objects
 315  * "Field Datum"  -- a datum from the actual field object
 316  * "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field
 317  */
 318 #define ACPI_COMMON_FIELD_INFO \
 319     UINT8                           FieldFlags;         /* Access, update, and lock bits */\
 320     UINT8                           Attribute;          /* From AccessAs keyword */\
 321     UINT8                           AccessByteWidth;    /* Read/Write size in bytes */\
 322     ACPI_NAMESPACE_NODE             *Node;              /* Link back to parent node */\
 323     UINT32                          BitLength;          /* Length of field in bits */\
 324     UINT32                          BaseByteOffset;     /* Byte offset within containing object */\
 325     UINT32                          Value;              /* Value to store into the Bank or Index register */\
 326     UINT8                           StartFieldBitOffset;/* Bit offset within first field datum (0-63) */\
 327     UINT8                           AccessLength;       /* For serial regions/fields */
 328
 329 /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */
 330
 331 typedef struct acpi_object_field_common
 332 {
 333     ACPI_OBJECT_COMMON_HEADER
 334     ACPI_COMMON_FIELD_INFO
 335     union acpi_operand_object       *RegionObj;         /* Parent Operation Region object (REGION/BANK fields only) */
 336
 337 } ACPI_OBJECT_FIELD_COMMON;
 338
 339
 340 typedef struct acpi_object_region_field
 341 {
 342     ACPI_OBJECT_COMMON_HEADER
 343     ACPI_COMMON_FIELD_INFO
 344     UINT16                          ResourceLength;
 345     union acpi_operand_object       *RegionObj;         /* Containing OpRegion object */
 346     UINT8                           *ResourceBuffer;    /* ResourceTemplate for serial regions/fields */
 347     UINT16                          PinNumberIndex;     /* Index relative to previous Connection/Template */
 348
 349 } ACPI_OBJECT_REGION_FIELD;
 350
 351
 352 typedef struct acpi_object_bank_field
 353 {
 354     ACPI_OBJECT_COMMON_HEADER
 355     ACPI_COMMON_FIELD_INFO
 356     union acpi_operand_object       *RegionObj;         /* Containing OpRegion object */
 357     union acpi_operand_object       *BankObj;           /* BankSelect Register object */
 358
 359 } ACPI_OBJECT_BANK_FIELD;
 360
 361
 362 typedef struct acpi_object_index_field
 363 {
 364     ACPI_OBJECT_COMMON_HEADER
 365     ACPI_COMMON_FIELD_INFO
 366
 367     /*
 368      * No "RegionObj" pointer needed since the Index and Data registers
 369      * are each field definitions unto themselves.
 370      */
 371     union acpi_operand_object       *IndexObj;          /* Index register */
 372     union acpi_operand_object       *DataObj;           /* Data register */
 373
 374 } ACPI_OBJECT_INDEX_FIELD;
 375
 376
 377 /* The BufferField is different in that it is part of a Buffer, not an OpRegion */
 378
 379 typedef struct acpi_object_buffer_field
 380 {
 381     ACPI_OBJECT_COMMON_HEADER
 382     ACPI_COMMON_FIELD_INFO
 383     union acpi_operand_object       *BufferObj;         /* Containing Buffer object */
 384
 385 } ACPI_OBJECT_BUFFER_FIELD;
 386
 387
 388 /******************************************************************************
 389  *
 390  * Objects for handlers
 391  *
 392  *****************************************************************************/
 393
 394 typedef struct acpi_object_notify_handler
 395 {
 396     ACPI_OBJECT_COMMON_HEADER
 397     ACPI_NAMESPACE_NODE             *Node;              /* Parent device */
 398     UINT32                          HandlerType;        /* Type: Device/System/Both */
 399     ACPI_NOTIFY_HANDLER             Handler;            /* Handler address */
 400     void                            *Context;
 401     union acpi_operand_object       *Next[2];           /* Device and System handler lists */
 402
 403 } ACPI_OBJECT_NOTIFY_HANDLER;
 404
 405
 406 typedef struct acpi_object_addr_handler
 407 {
 408     ACPI_OBJECT_COMMON_HEADER
 409     UINT8                           SpaceId;
 410     UINT8                           HandlerFlags;
 411     ACPI_ADR_SPACE_HANDLER          Handler;
 412     ACPI_NAMESPACE_NODE             *Node;              /* Parent device */
 413     void                            *Context;
 414     ACPI_ADR_SPACE_SETUP            Setup;
 415     union acpi_operand_object       *RegionList;        /* Regions using this handler */
 416     union acpi_operand_object       *Next;
 417
 418 } ACPI_OBJECT_ADDR_HANDLER;
 419
 420 /* Flags for address handler (HandlerFlags) */
 421
 422 #define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED  0x01
 423
 424
 425 /******************************************************************************
 426  *
 427  * Special internal objects
 428  *
 429  *****************************************************************************/
 430
 431 /*
 432  * The Reference object is used for these opcodes:
 433  * Arg[0-6], Local[0-7], IndexOp, NameOp, RefOfOp, LoadOp, LoadTableOp, DebugOp
 434  * The Reference.Class differentiates these types.
 435  */
 436 typedef struct acpi_object_reference
 437 {
 438     ACPI_OBJECT_COMMON_HEADER
 439     UINT8                           Class;              /* Reference Class */
 440     UINT8                           TargetType;         /* Used for Index Op */
 441     UINT8                           Resolved;           /* Reference has been resolved to a value */
 442     void                            *Object;            /* NameOp=>HANDLE to obj, IndexOp=>ACPI_OPERAND_OBJECT */
 443     ACPI_NAMESPACE_NODE             *Node;              /* RefOf or Namepath */
 444     union acpi_operand_object       **Where;            /* Target of Index */
 445     UINT8                           *IndexPointer;      /* Used for Buffers and Strings */
 446     UINT8                           *Aml;               /* Used for deferred resolution of the ref */
 447     UINT32                          Value;              /* Used for Local/Arg/Index/DdbHandle */
 448
 449 } ACPI_OBJECT_REFERENCE;
 450
 451 /* Values for Reference.Class above */
 452
 453 typedef enum
 454 {
 455     ACPI_REFCLASS_LOCAL             = 0,        /* Method local */
 456     ACPI_REFCLASS_ARG               = 1,        /* Method argument */
 457     ACPI_REFCLASS_REFOF             = 2,        /* Result of RefOf() TBD: Split to Ref/Node and Ref/OperandObj? */
 458     ACPI_REFCLASS_INDEX             = 3,        /* Result of Index() */
 459     ACPI_REFCLASS_TABLE             = 4,        /* DdbHandle - Load(), LoadTable() */
 460     ACPI_REFCLASS_NAME              = 5,        /* Reference to a named object */
 461     ACPI_REFCLASS_DEBUG             = 6,        /* Debug object */
 462
 463     ACPI_REFCLASS_MAX               = 6
 464
 465 } ACPI_REFERENCE_CLASSES;
 466
 467 /*
 468  * Extra object is used as additional storage for types that
 469  * have AML code in their declarations (TermArgs) that must be
 470  * evaluated at run time.
 471  *
 472  * Currently: Region and FieldUnit types
 473  */
 474 typedef struct acpi_object_extra
 475 {
 476     ACPI_OBJECT_COMMON_HEADER
 477     ACPI_NAMESPACE_NODE             *Method_REG;        /* _REG method for this region (if any) */
 478     ACPI_NAMESPACE_NODE             *ScopeNode;
 479     void                            *RegionContext;     /* Region-specific data */
 480     UINT8                           *AmlStart;
 481     UINT32                          AmlLength;
 482
 483 } ACPI_OBJECT_EXTRA;
 484
 485
 486 /* Additional data that can be attached to namespace nodes */
 487
 488 typedef struct acpi_object_data
 489 {
 490     ACPI_OBJECT_COMMON_HEADER
 491     ACPI_OBJECT_HANDLER             Handler;
 492     void                            *Pointer;
 493
 494 } ACPI_OBJECT_DATA;
 495
 496
 497 /* Structure used when objects are cached for reuse */
 498
 499 typedef struct acpi_object_cache_list
 500 {
 501     ACPI_OBJECT_COMMON_HEADER
 502     union acpi_operand_object       *Next;              /* Link for object cache and internal lists*/
 503
 504 } ACPI_OBJECT_CACHE_LIST;
 505
 506
 507 /******************************************************************************
 508  *
 509  * ACPI_OPERAND_OBJECT Descriptor - a giant union of all of the above
 510  *
 511  *****************************************************************************/
 512
 513 typedef union acpi_operand_object
 514 {
 515     ACPI_OBJECT_COMMON                  Common;
 516     ACPI_OBJECT_INTEGER                 Integer;
 517     ACPI_OBJECT_STRING                  String;
 518     ACPI_OBJECT_BUFFER                  Buffer;
 519     ACPI_OBJECT_PACKAGE                 Package;
 520     ACPI_OBJECT_EVENT                   Event;
 521     ACPI_OBJECT_METHOD                  Method;
 522     ACPI_OBJECT_MUTEX                   Mutex;
 523     ACPI_OBJECT_REGION                  Region;
 524     ACPI_OBJECT_NOTIFY_COMMON           CommonNotify;
 525     ACPI_OBJECT_DEVICE                  Device;
 526     ACPI_OBJECT_POWER_RESOURCE          PowerResource;
 527     ACPI_OBJECT_PROCESSOR               Processor;
 528     ACPI_OBJECT_THERMAL_ZONE            ThermalZone;
 529     ACPI_OBJECT_FIELD_COMMON            CommonField;
 530     ACPI_OBJECT_REGION_FIELD            Field;
 531     ACPI_OBJECT_BUFFER_FIELD            BufferField;
 532     ACPI_OBJECT_BANK_FIELD              BankField;
 533     ACPI_OBJECT_INDEX_FIELD             IndexField;
 534     ACPI_OBJECT_NOTIFY_HANDLER          Notify;
 535     ACPI_OBJECT_ADDR_HANDLER            AddressSpace;
 536     ACPI_OBJECT_REFERENCE               Reference;
 537     ACPI_OBJECT_EXTRA                   Extra;
 538     ACPI_OBJECT_DATA                    Data;
 539     ACPI_OBJECT_CACHE_LIST              Cache;
 540
 541     /*
 542      * Add namespace node to union in order to simplify code that accepts both
 543      * ACPI_OPERAND_OBJECTs and ACPI_NAMESPACE_NODEs. The structures share
 544      * a common DescriptorType field in order to differentiate them.
 545      */
 546     ACPI_NAMESPACE_NODE                 Node;
 547
 548 } ACPI_OPERAND_OBJECT;
 549
 550
 551 /******************************************************************************
 552  *
 553  * ACPI_DESCRIPTOR - objects that share a common descriptor identifier
 554  *
 555  *****************************************************************************/
 556
 557 /* Object descriptor types */
 558
 559 #define ACPI_DESC_TYPE_CACHED           0x01        /* Used only when object is cached */
 560 #define ACPI_DESC_TYPE_STATE            0x02
 561 #define ACPI_DESC_TYPE_STATE_UPDATE     0x03
 562 #define ACPI_DESC_TYPE_STATE_PACKAGE    0x04
 563 #define ACPI_DESC_TYPE_STATE_CONTROL    0x05
 564 #define ACPI_DESC_TYPE_STATE_RPSCOPE    0x06
 565 #define ACPI_DESC_TYPE_STATE_PSCOPE     0x07
 566 #define ACPI_DESC_TYPE_STATE_WSCOPE     0x08
 567 #define ACPI_DESC_TYPE_STATE_RESULT     0x09
 568 #define ACPI_DESC_TYPE_STATE_NOTIFY     0x0A
 569 #define ACPI_DESC_TYPE_STATE_THREAD     0x0B
 570 #define ACPI_DESC_TYPE_WALK             0x0C
 571 #define ACPI_DESC_TYPE_PARSER           0x0D
 572 #define ACPI_DESC_TYPE_OPERAND          0x0E
 573 #define ACPI_DESC_TYPE_NAMED            0x0F
 574 #define ACPI_DESC_TYPE_MAX              0x0F
 575
 576
 577 typedef struct acpi_common_descriptor
 578 {
 579     void                            *CommonPointer;
 580     UINT8                           DescriptorType; /* To differentiate various internal objs */
 581
 582 } ACPI_COMMON_DESCRIPTOR;
 583
 584 typedef union acpi_descriptor
 585 {
 586     ACPI_COMMON_DESCRIPTOR          Common;
 587     ACPI_OPERAND_OBJECT             Object;
 588     ACPI_NAMESPACE_NODE             Node;
 589     ACPI_PARSE_OBJECT               Op;
 590
 591 } ACPI_DESCRIPTOR;
 592
 593 #pragma pack()
 594
 595 #endif /* _ACOBJECT_H */