src/add-ons/kernel/bus_managers/acpi/acpica/include/acobject.h

   1 /******************************************************************************
   2  *
   3  * Name: acobject.h - Definition of ACPI_OPERAND_OBJECT  (Internal object only)
   4  *
   5  *****************************************************************************/
   6
   7 /******************************************************************************
   8  *
   9  * 1. Copyright Notice
  10  *
  11  * Some or all of this work - Copyright (c) 1999 - 2014, Intel Corp.
  12  * All rights reserved.
  13  *
  14  * 2. License
  15  *
  16  * 2.1. This is your license from Intel Corp. under its intellectual property
  17  * rights. You may have additional license terms from the party that provided
  18  * you this software, covering your right to use that party's intellectual
  19  * property rights.
  20  *
  21  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  22  * copy of the source code appearing in this file ("Covered Code") an
  23  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  24  * base code distributed originally by Intel ("Original Intel Code") to copy,
  25  * make derivatives, distribute, use and display any portion of the Covered
  26  * Code in any form, with the right to sublicense such rights; and
  27  *
  28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  29  * license (with the right to sublicense), under only those claims of Intel
  30  * patents that are infringed by the Original Intel Code, to make, use, sell,
  31  * offer to sell, and import the Covered Code and derivative works thereof
  32  * solely to the minimum extent necessary to exercise the above copyright
  33  * license, and in no event shall the patent license extend to any additions
  34  * to or modifications of the Original Intel Code. No other license or right
  35  * is granted directly or by implication, estoppel or otherwise;
  36  *
  37  * The above copyright and patent license is granted only if the following
  38  * conditions are met:
  39  *
  40  * 3. Conditions
  41  *
  42  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  43  * Redistribution of source code of any substantial portion of the Covered
  44  * Code or modification with rights to further distribute source must include
  45  * the above Copyright Notice, the above License, this list of Conditions,
  46  * and the following Disclaimer and Export Compliance provision. In addition,
  47  * Licensee must cause all Covered Code to which Licensee contributes to
  48  * contain a file documenting the changes Licensee made to create that Covered
  49  * Code and the date of any change. Licensee must include in that file the
  50  * documentation of any changes made by any predecessor Licensee. Licensee
  51  * must include a prominent statement that the modification is derived,
  52  * directly or indirectly, from Original Intel Code.
  53  *
  54  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  55  * Redistribution of source code of any substantial portion of the Covered
  56  * Code or modification without rights to further distribute source must
  57  * include the following Disclaimer and Export Compliance provision in the
  58  * documentation and/or other materials provided with distribution. In
  59  * addition, Licensee may not authorize further sublicense of source of any
  60  * portion of the Covered Code, and must include terms to the effect that the
  61  * license from Licensee to its licensee is limited to the intellectual
  62  * property embodied in the software Licensee provides to its licensee, and
  63  * not to intellectual property embodied in modifications its licensee may
  64  * make.
  65  *
  66  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  67  * substantial portion of the Covered Code or modification must reproduce the
  68  * above Copyright Notice, and the following Disclaimer and Export Compliance
  69  * provision in the documentation and/or other materials provided with the
  70  * distribution.
  71  *
  72  * 3.4. Intel retains all right, title, and interest in and to the Original
  73  * Intel Code.
  74  *
  75  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  76  * Intel shall be used in advertising or otherwise to promote the sale, use or
  77  * other dealings in products derived from or relating to the Covered Code
  78  * without prior written authorization from Intel.
  79  *
  80  * 4. Disclaimer and Export Compliance
  81  *
  82  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  83  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  84  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
  85  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
  86  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
  87  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  88  * PARTICULAR PURPOSE.
  89  *
  90  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  91  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  92  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  93  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  94  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  95  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
  96  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  97  * LIMITED REMEDY.
  98  *
  99  * 4.3. Licensee shall not export, either directly or indirectly, any of this
 100  * software or system incorporating such software without first obtaining any
 101  * required license or other approval from the U. S. Department of Commerce or
 102  * any other agency or department of the United States Government. In the
 103  * event Licensee exports any such software from the United States or
 104  * re-exports any such software from a foreign destination, Licensee shall
 105  * ensure that the distribution and export/re-export of the software is in
 106  * compliance with all laws, regulations, orders, or other restrictions of the
 107  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 108  * any of its subsidiaries will export/re-export any technical data, process,
 109  * software, or service, directly or indirectly, to any country for which the
 110  * United States government or any agency thereof requires an export license,
 111  * other governmental approval, or letter of assurance, without first obtaining
 112  * such license, approval or letter.
 113  *
 114  *****************************************************************************/
 115
 116 #ifndef _ACOBJECT_H
 117 #define _ACOBJECT_H
 118
 119 /* acpisrc:StructDefs -- for acpisrc conversion */
 120
 121
 122 /*
 123  * The ACPI_OPERAND_OBJECT is used to pass AML operands from the dispatcher
 124  * to the interpreter, and to keep track of the various handlers such as
 125  * address space handlers and notify handlers. The object is a constant
 126  * size in order to allow it to be cached and reused.
 127  *
 128  * Note: The object is optimized to be aligned and will not work if it is
 129  * byte-packed.
 130  */
 131 #if ACPI_MACHINE_WIDTH == 64
 132 #pragma pack(8)
 133 #else
 134 #pragma pack(4)
 135 #endif
 136
 137 /*******************************************************************************
 138  *
 139  * Common Descriptors
 140  *
 141  ******************************************************************************/
 142
 143 /*
 144  * Common area for all objects.
 145  *
 146  * DescriptorType is used to differentiate between internal descriptors, and
 147  * must be in the same place across all descriptors
 148  *
 149  * Note: The DescriptorType and Type fields must appear in the identical
 150  * position in both the ACPI_NAMESPACE_NODE and ACPI_OPERAND_OBJECT
 151  * structures.
 152  */
 153 #define ACPI_OBJECT_COMMON_HEADER \
 154     union acpi_operand_object       *NextObject;        /* Objects linked to parent NS node */\
 155     UINT8                           DescriptorType;     /* To differentiate various internal objs */\
 156     UINT8                           Type;               /* ACPI_OBJECT_TYPE */\
 157     UINT16                          ReferenceCount;     /* For object deletion management */\
 158     UINT8                           Flags;
 159     /*
 160      * Note: There are 3 bytes available here before the
 161      * next natural alignment boundary (for both 32/64 cases)
 162      */
 163
 164 /* Values for Flag byte above */
 165
 166 #define AOPOBJ_AML_CONSTANT         0x01    /* Integer is an AML constant */
 167 #define AOPOBJ_STATIC_POINTER       0x02    /* Data is part of an ACPI table, don't delete */
 168 #define AOPOBJ_DATA_VALID           0x04    /* Object is initialized and data is valid */
 169 #define AOPOBJ_OBJECT_INITIALIZED   0x08    /* Region is initialized, _REG was run */
 170 #define AOPOBJ_SETUP_COMPLETE       0x10    /* Region setup is complete */
 171 #define AOPOBJ_INVALID              0x20    /* Host OS won't allow a Region address */
 172
 173
 174 /******************************************************************************
 175  *
 176  * Basic data types
 177  *
 178  *****************************************************************************/
 179
 180 typedef struct acpi_object_common
 181 {
 182     ACPI_OBJECT_COMMON_HEADER
 183
 184 } ACPI_OBJECT_COMMON;
 185
 186
 187 typedef struct acpi_object_integer
 188 {
 189     ACPI_OBJECT_COMMON_HEADER
 190     UINT8                           Fill[3];            /* Prevent warning on some compilers */
 191     UINT64                          Value;
 192
 193 } ACPI_OBJECT_INTEGER;
 194
 195
 196 /*
 197  * Note: The String and Buffer object must be identical through the
 198  * pointer and length elements. There is code that depends on this.
 199  *
 200  * Fields common to both Strings and Buffers
 201  */
 202 #define ACPI_COMMON_BUFFER_INFO(_Type) \
 203     _Type                           *Pointer; \
 204     UINT32                          Length;
 205
 206
 207 typedef struct acpi_object_string   /* Null terminated, ASCII characters only */
 208 {
 209     ACPI_OBJECT_COMMON_HEADER
 210     ACPI_COMMON_BUFFER_INFO         (char)              /* String in AML stream or allocated string */
 211
 212 } ACPI_OBJECT_STRING;
 213
 214
 215 typedef struct acpi_object_buffer
 216 {
 217     ACPI_OBJECT_COMMON_HEADER
 218     ACPI_COMMON_BUFFER_INFO         (UINT8)             /* Buffer in AML stream or allocated buffer */
 219     UINT32                          AmlLength;
 220     UINT8                           *AmlStart;
 221     ACPI_NAMESPACE_NODE             *Node;              /* Link back to parent node */
 222
 223 } ACPI_OBJECT_BUFFER;
 224
 225
 226 typedef struct acpi_object_package
 227 {
 228     ACPI_OBJECT_COMMON_HEADER
 229     ACPI_NAMESPACE_NODE             *Node;              /* Link back to parent node */
 230     union acpi_operand_object       **Elements;         /* Array of pointers to AcpiObjects */
 231     UINT8                           *AmlStart;
 232     UINT32                          AmlLength;
 233     UINT32                          Count;              /* # of elements in package */
 234
 235 } ACPI_OBJECT_PACKAGE;
 236
 237
 238 /******************************************************************************
 239  *
 240  * Complex data types
 241  *
 242  *****************************************************************************/
 243
 244 typedef struct acpi_object_event
 245 {
 246     ACPI_OBJECT_COMMON_HEADER
 247     ACPI_SEMAPHORE                  OsSemaphore;        /* Actual OS synchronization object */
 248
 249 } ACPI_OBJECT_EVENT;
 250
 251
 252 typedef struct acpi_object_mutex
 253 {
 254     ACPI_OBJECT_COMMON_HEADER
 255     UINT8                           SyncLevel;          /* 0-15, specified in Mutex() call */
 256     UINT16                          AcquisitionDepth;   /* Allow multiple Acquires, same thread */
 257     ACPI_MUTEX                      OsMutex;            /* Actual OS synchronization object */
 258     ACPI_THREAD_ID                  ThreadId;           /* Current owner of the mutex */
 259     struct acpi_thread_state        *OwnerThread;       /* Current owner of the mutex */
 260     union acpi_operand_object       *Prev;              /* Link for list of acquired mutexes */
 261     union acpi_operand_object       *Next;              /* Link for list of acquired mutexes */
 262     ACPI_NAMESPACE_NODE             *Node;              /* Containing namespace node */
 263     UINT8                           OriginalSyncLevel;  /* Owner's original sync level (0-15) */
 264
 265 } ACPI_OBJECT_MUTEX;
 266
 267
 268 typedef struct acpi_object_region
 269 {
 270     ACPI_OBJECT_COMMON_HEADER
 271     UINT8                           SpaceId;
 272     ACPI_NAMESPACE_NODE             *Node;              /* Containing namespace node */
 273     union acpi_operand_object       *Handler;           /* Handler for region access */
 274     union acpi_operand_object       *Next;
 275     ACPI_PHYSICAL_ADDRESS           Address;
 276     UINT32                          Length;
 277
 278 } ACPI_OBJECT_REGION;
 279
 280
 281 typedef struct acpi_object_method
 282 {
 283     ACPI_OBJECT_COMMON_HEADER
 284     UINT8                           InfoFlags;
 285     UINT8                           ParamCount;
 286     UINT8                           SyncLevel;
 287     union acpi_operand_object       *Mutex;
 288     UINT8                           *AmlStart;
 289     union
 290     {
 291         ACPI_INTERNAL_METHOD            Implementation;
 292         union acpi_operand_object       *Handler;
 293     } Dispatch;
 294
 295     UINT32                          AmlLength;
 296     UINT8                           ThreadCount;
 297     ACPI_OWNER_ID                   OwnerId;
 298
 299 } ACPI_OBJECT_METHOD;
 300
 301 /* Flags for InfoFlags field above */
 302
 303 #define ACPI_METHOD_MODULE_LEVEL        0x01    /* Method is actually module-level code */
 304 #define ACPI_METHOD_INTERNAL_ONLY       0x02    /* Method is implemented internally (_OSI) */
 305 #define ACPI_METHOD_SERIALIZED          0x04    /* Method is serialized */
 306 #define ACPI_METHOD_SERIALIZED_PENDING  0x08    /* Method is to be marked serialized */
 307 #define ACPI_METHOD_IGNORE_SYNC_LEVEL   0x10    /* Method was auto-serialized at table load time */
 308 #define ACPI_METHOD_MODIFIED_NAMESPACE  0x20    /* Method modified the namespace */
 309
 310
 311 /******************************************************************************
 312  *
 313  * Objects that can be notified. All share a common NotifyInfo area.
 314  *
 315  *****************************************************************************/
 316
 317 /*
 318  * Common fields for objects that support ASL notifications
 319  */
 320 #define ACPI_COMMON_NOTIFY_INFO \
 321     union acpi_operand_object       *NotifyList[2];     /* Handlers for system/device notifies */\
 322     union acpi_operand_object       *Handler;           /* Handler for Address space */
 323
 324
 325 typedef struct acpi_object_notify_common    /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */
 326 {
 327     ACPI_OBJECT_COMMON_HEADER
 328     ACPI_COMMON_NOTIFY_INFO
 329
 330 } ACPI_OBJECT_NOTIFY_COMMON;
 331
 332
 333 typedef struct acpi_object_device
 334 {
 335     ACPI_OBJECT_COMMON_HEADER
 336     ACPI_COMMON_NOTIFY_INFO
 337     ACPI_GPE_BLOCK_INFO             *GpeBlock;
 338
 339 } ACPI_OBJECT_DEVICE;
 340
 341
 342 typedef struct acpi_object_power_resource
 343 {
 344     ACPI_OBJECT_COMMON_HEADER
 345     ACPI_COMMON_NOTIFY_INFO
 346     UINT32                          SystemLevel;
 347     UINT32                          ResourceOrder;
 348
 349 } ACPI_OBJECT_POWER_RESOURCE;
 350
 351
 352 typedef struct acpi_object_processor
 353 {
 354     ACPI_OBJECT_COMMON_HEADER
 355
 356     /* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */
 357
 358     UINT8                           ProcId;
 359     UINT8                           Length;
 360     ACPI_COMMON_NOTIFY_INFO
 361     ACPI_IO_ADDRESS                 Address;
 362
 363 } ACPI_OBJECT_PROCESSOR;
 364
 365
 366 typedef struct acpi_object_thermal_zone
 367 {
 368     ACPI_OBJECT_COMMON_HEADER
 369     ACPI_COMMON_NOTIFY_INFO
 370
 371 } ACPI_OBJECT_THERMAL_ZONE;
 372
 373
 374 /******************************************************************************
 375  *
 376  * Fields. All share a common header/info field.
 377  *
 378  *****************************************************************************/
 379
 380 /*
 381  * Common bitfield for the field objects
 382  * "Field Datum"  -- a datum from the actual field object
 383  * "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field
 384  */
 385 #define ACPI_COMMON_FIELD_INFO \
 386     UINT8                           FieldFlags;         /* Access, update, and lock bits */\
 387     UINT8                           Attribute;          /* From AccessAs keyword */\
 388     UINT8                           AccessByteWidth;    /* Read/Write size in bytes */\
 389     ACPI_NAMESPACE_NODE             *Node;              /* Link back to parent node */\
 390     UINT32                          BitLength;          /* Length of field in bits */\
 391     UINT32                          BaseByteOffset;     /* Byte offset within containing object */\
 392     UINT32                          Value;              /* Value to store into the Bank or Index register */\
 393     UINT8                           StartFieldBitOffset;/* Bit offset within first field datum (0-63) */\
 394     UINT8                           AccessLength;       /* For serial regions/fields */
 395
 396
 397 typedef struct acpi_object_field_common                 /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */
 398 {
 399     ACPI_OBJECT_COMMON_HEADER
 400     ACPI_COMMON_FIELD_INFO
 401     union acpi_operand_object       *RegionObj;         /* Parent Operation Region object (REGION/BANK fields only) */
 402
 403 } ACPI_OBJECT_FIELD_COMMON;
 404
 405
 406 typedef struct acpi_object_region_field
 407 {
 408     ACPI_OBJECT_COMMON_HEADER
 409     ACPI_COMMON_FIELD_INFO
 410     UINT16                          ResourceLength;
 411     union acpi_operand_object       *RegionObj;         /* Containing OpRegion object */
 412     UINT8                           *ResourceBuffer;    /* ResourceTemplate for serial regions/fields */
 413
 414 } ACPI_OBJECT_REGION_FIELD;
 415
 416
 417 typedef struct acpi_object_bank_field
 418 {
 419     ACPI_OBJECT_COMMON_HEADER
 420     ACPI_COMMON_FIELD_INFO
 421     union acpi_operand_object       *RegionObj;         /* Containing OpRegion object */
 422     union acpi_operand_object       *BankObj;           /* BankSelect Register object */
 423
 424 } ACPI_OBJECT_BANK_FIELD;
 425
 426
 427 typedef struct acpi_object_index_field
 428 {
 429     ACPI_OBJECT_COMMON_HEADER
 430     ACPI_COMMON_FIELD_INFO
 431
 432     /*
 433      * No "RegionObj" pointer needed since the Index and Data registers
 434      * are each field definitions unto themselves.
 435      */
 436     union acpi_operand_object       *IndexObj;          /* Index register */
 437     union acpi_operand_object       *DataObj;           /* Data register */
 438
 439 } ACPI_OBJECT_INDEX_FIELD;
 440
 441
 442 /* The BufferField is different in that it is part of a Buffer, not an OpRegion */
 443
 444 typedef struct acpi_object_buffer_field
 445 {
 446     ACPI_OBJECT_COMMON_HEADER
 447     ACPI_COMMON_FIELD_INFO
 448     union acpi_operand_object       *BufferObj;         /* Containing Buffer object */
 449
 450 } ACPI_OBJECT_BUFFER_FIELD;
 451
 452
 453 /******************************************************************************
 454  *
 455  * Objects for handlers
 456  *
 457  *****************************************************************************/
 458
 459 typedef struct acpi_object_notify_handler
 460 {
 461     ACPI_OBJECT_COMMON_HEADER
 462     ACPI_NAMESPACE_NODE             *Node;              /* Parent device */
 463     UINT32                          HandlerType;        /* Type: Device/System/Both */
 464     ACPI_NOTIFY_HANDLER             Handler;            /* Handler address */
 465     void                            *Context;
 466     union acpi_operand_object       *Next[2];           /* Device and System handler lists */
 467
 468 } ACPI_OBJECT_NOTIFY_HANDLER;
 469
 470
 471 typedef struct acpi_object_addr_handler
 472 {
 473     ACPI_OBJECT_COMMON_HEADER
 474     UINT8                           SpaceId;
 475     UINT8                           HandlerFlags;
 476     ACPI_ADR_SPACE_HANDLER          Handler;
 477     ACPI_NAMESPACE_NODE             *Node;              /* Parent device */
 478     void                            *Context;
 479     ACPI_ADR_SPACE_SETUP            Setup;
 480     union acpi_operand_object       *RegionList;        /* Regions using this handler */
 481     union acpi_operand_object       *Next;
 482
 483 } ACPI_OBJECT_ADDR_HANDLER;
 484
 485 /* Flags for address handler (HandlerFlags) */
 486
 487 #define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED  0x01
 488
 489
 490 /******************************************************************************
 491  *
 492  * Special internal objects
 493  *
 494  *****************************************************************************/
 495
 496 /*
 497  * The Reference object is used for these opcodes:
 498  * Arg[0-6], Local[0-7], IndexOp, NameOp, RefOfOp, LoadOp, LoadTableOp, DebugOp
 499  * The Reference.Class differentiates these types.
 500  */
 501 typedef struct acpi_object_reference
 502 {
 503     ACPI_OBJECT_COMMON_HEADER
 504      UINT8                           Class;              /* Reference Class */
 505      UINT8                           TargetType;         /* Used for Index Op */
 506      UINT8                           Reserved;
 507      void                            *Object;            /* NameOp=>HANDLE to obj, IndexOp=>ACPI_OPERAND_OBJECT */
 508      ACPI_NAMESPACE_NODE             *Node;              /* RefOf or Namepath */
 509      union acpi_operand_object       **Where;            /* Target of Index */
 510      UINT32                          Value;              /* Used for Local/Arg/Index/DdbHandle */
 511
 512 } ACPI_OBJECT_REFERENCE;
 513
 514 /* Values for Reference.Class above */
 515
 516 typedef enum
 517 {
 518     ACPI_REFCLASS_LOCAL             = 0,        /* Method local */
 519     ACPI_REFCLASS_ARG               = 1,        /* Method argument */
 520     ACPI_REFCLASS_REFOF             = 2,        /* Result of RefOf() TBD: Split to Ref/Node and Ref/OperandObj? */
 521     ACPI_REFCLASS_INDEX             = 3,        /* Result of Index() */
 522     ACPI_REFCLASS_TABLE             = 4,        /* DdbHandle - Load(), LoadTable() */
 523     ACPI_REFCLASS_NAME              = 5,        /* Reference to a named object */
 524     ACPI_REFCLASS_DEBUG             = 6,        /* Debug object */
 525
 526     ACPI_REFCLASS_MAX               = 6
 527
 528 } ACPI_REFERENCE_CLASSES;
 529
 530
 531 /*
 532  * Extra object is used as additional storage for types that
 533  * have AML code in their declarations (TermArgs) that must be
 534  * evaluated at run time.
 535  *
 536  * Currently: Region and FieldUnit types
 537  */
 538 typedef struct acpi_object_extra
 539 {
 540     ACPI_OBJECT_COMMON_HEADER
 541     ACPI_NAMESPACE_NODE             *Method_REG;        /* _REG method for this region (if any) */
 542     ACPI_NAMESPACE_NODE             *ScopeNode;
 543     void                            *RegionContext;     /* Region-specific data */
 544     UINT8                           *AmlStart;
 545     UINT32                          AmlLength;
 546
 547 } ACPI_OBJECT_EXTRA;
 548
 549
 550 /* Additional data that can be attached to namespace nodes */
 551
 552 typedef struct acpi_object_data
 553 {
 554     ACPI_OBJECT_COMMON_HEADER
 555     ACPI_OBJECT_HANDLER             Handler;
 556     void                            *Pointer;
 557
 558 } ACPI_OBJECT_DATA;
 559
 560
 561 /* Structure used when objects are cached for reuse */
 562
 563 typedef struct acpi_object_cache_list
 564 {
 565     ACPI_OBJECT_COMMON_HEADER
 566     union acpi_operand_object       *Next;              /* Link for object cache and internal lists*/
 567
 568 } ACPI_OBJECT_CACHE_LIST;
 569
 570
 571 /******************************************************************************
 572  *
 573  * ACPI_OPERAND_OBJECT Descriptor - a giant union of all of the above
 574  *
 575  *****************************************************************************/
 576
 577 typedef union acpi_operand_object
 578 {
 579     ACPI_OBJECT_COMMON                  Common;
 580     ACPI_OBJECT_INTEGER                 Integer;
 581     ACPI_OBJECT_STRING                  String;
 582     ACPI_OBJECT_BUFFER                  Buffer;
 583     ACPI_OBJECT_PACKAGE                 Package;
 584     ACPI_OBJECT_EVENT                   Event;
 585     ACPI_OBJECT_METHOD                  Method;
 586     ACPI_OBJECT_MUTEX                   Mutex;
 587     ACPI_OBJECT_REGION                  Region;
 588     ACPI_OBJECT_NOTIFY_COMMON           CommonNotify;
 589     ACPI_OBJECT_DEVICE                  Device;
 590     ACPI_OBJECT_POWER_RESOURCE          PowerResource;
 591     ACPI_OBJECT_PROCESSOR               Processor;
 592     ACPI_OBJECT_THERMAL_ZONE            ThermalZone;
 593     ACPI_OBJECT_FIELD_COMMON            CommonField;
 594     ACPI_OBJECT_REGION_FIELD            Field;
 595     ACPI_OBJECT_BUFFER_FIELD            BufferField;
 596     ACPI_OBJECT_BANK_FIELD              BankField;
 597     ACPI_OBJECT_INDEX_FIELD             IndexField;
 598     ACPI_OBJECT_NOTIFY_HANDLER          Notify;
 599     ACPI_OBJECT_ADDR_HANDLER            AddressSpace;
 600     ACPI_OBJECT_REFERENCE               Reference;
 601     ACPI_OBJECT_EXTRA                   Extra;
 602     ACPI_OBJECT_DATA                    Data;
 603     ACPI_OBJECT_CACHE_LIST              Cache;
 604
 605     /*
 606      * Add namespace node to union in order to simplify code that accepts both
 607      * ACPI_OPERAND_OBJECTs and ACPI_NAMESPACE_NODEs. The structures share
 608      * a common DescriptorType field in order to differentiate them.
 609      */
 610     ACPI_NAMESPACE_NODE                 Node;
 611
 612 } ACPI_OPERAND_OBJECT;
 613
 614
 615 /******************************************************************************
 616  *
 617  * ACPI_DESCRIPTOR - objects that share a common descriptor identifier
 618  *
 619  *****************************************************************************/
 620
 621 /* Object descriptor types */
 622
 623 #define ACPI_DESC_TYPE_CACHED           0x01        /* Used only when object is cached */
 624 #define ACPI_DESC_TYPE_STATE            0x02
 625 #define ACPI_DESC_TYPE_STATE_UPDATE     0x03
 626 #define ACPI_DESC_TYPE_STATE_PACKAGE    0x04
 627 #define ACPI_DESC_TYPE_STATE_CONTROL    0x05
 628 #define ACPI_DESC_TYPE_STATE_RPSCOPE    0x06
 629 #define ACPI_DESC_TYPE_STATE_PSCOPE     0x07
 630 #define ACPI_DESC_TYPE_STATE_WSCOPE     0x08
 631 #define ACPI_DESC_TYPE_STATE_RESULT     0x09
 632 #define ACPI_DESC_TYPE_STATE_NOTIFY     0x0A
 633 #define ACPI_DESC_TYPE_STATE_THREAD     0x0B
 634 #define ACPI_DESC_TYPE_WALK             0x0C
 635 #define ACPI_DESC_TYPE_PARSER           0x0D
 636 #define ACPI_DESC_TYPE_OPERAND          0x0E
 637 #define ACPI_DESC_TYPE_NAMED            0x0F
 638 #define ACPI_DESC_TYPE_MAX              0x0F
 639
 640
 641 typedef struct acpi_common_descriptor
 642 {
 643     void                            *CommonPointer;
 644     UINT8                           DescriptorType; /* To differentiate various internal objs */
 645
 646 } ACPI_COMMON_DESCRIPTOR;
 647
 648 typedef union acpi_descriptor
 649 {
 650     ACPI_COMMON_DESCRIPTOR          Common;
 651     ACPI_OPERAND_OBJECT             Object;
 652     ACPI_NAMESPACE_NODE             Node;
 653     ACPI_PARSE_OBJECT               Op;
 654
 655 } ACPI_DESCRIPTOR;
 656
 657 #pragma pack()
 658
 659 #endif /* _ACOBJECT_H */