include/acpi/acobject.h

   1
   2 /******************************************************************************
   3  *
   4  * Name: acobject.h - Definition of union acpi_operand_object    (Internal object only)
   5  *
   6  *****************************************************************************/
   7
   8 /*
   9  * Copyright (C) 2000 - 2005, R. Byron Moore
  10  * All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions, and the following disclaimer,
  17  *    without modification.
  18  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  19  *    substantially similar to the "NO WARRANTY" disclaimer below
  20  *    ("Disclaimer") and any redistribution must be conditioned upon
  21  *    including a substantially similar Disclaimer requirement for further
  22  *    binary redistribution.
  23  * 3. Neither the names of the above-listed copyright holders nor the names
  24  *    of any contributors may be used to endorse or promote products derived
  25  *    from this software without specific prior written permission.
  26  *
  27  * Alternatively, this software may be distributed under the terms of the
  28  * GNU General Public License ("GPL") version 2 as published by the Free
  29  * Software Foundation.
  30  *
  31  * NO WARRANTY
  32  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  33  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  34  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  35  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  36  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  37  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  38  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  40  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  41  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  42  * POSSIBILITY OF SUCH DAMAGES.
  43  */
  44
  45 #ifndef _ACOBJECT_H
  46 #define _ACOBJECT_H
  47
  48
  49 /*
  50  * The union acpi_operand_object    is used to pass AML operands from the dispatcher
  51  * to the interpreter, and to keep track of the various handlers such as
  52  * address space handlers and notify handlers.  The object is a constant
  53  * size in order to allow it to be cached and reused.
  54  */
  55
  56 /*******************************************************************************
  57  *
  58  * Common Descriptors
  59  *
  60  ******************************************************************************/
  61
  62 /*
  63  * Common area for all objects.
  64  *
  65  * data_type is used to differentiate between internal descriptors, and MUST
  66  * be the first byte in this structure.
  67  */
  68 #define ACPI_OBJECT_COMMON_HEADER   /* SIZE/ALIGNMENT: 32 bits, one ptr plus trailing 8-bit flag */\
  69         u8                                      descriptor;         /* To differentiate various internal objs */\
  70         u8                                      type;               /* acpi_object_type */\
  71         u16                                     reference_count;    /* For object deletion management */\
  72         union acpi_operand_object               *next_object;       /* Objects linked to parent NS node */\
  73         u8                                      flags; \
  74
  75 /* Values for flag byte above */
  76
  77 #define AOPOBJ_AML_CONSTANT         0x01
  78 #define AOPOBJ_STATIC_POINTER       0x02
  79 #define AOPOBJ_DATA_VALID           0x04
  80 #define AOPOBJ_OBJECT_INITIALIZED   0x08
  81 #define AOPOBJ_SETUP_COMPLETE       0x10
  82 #define AOPOBJ_SINGLE_DATUM         0x20
  83
  84
  85 /*
  86  * Common bitfield for the field objects
  87  * "Field Datum"  -- a datum from the actual field object
  88  * "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field
  89  */
  90 #define ACPI_COMMON_FIELD_INFO      /* SIZE/ALIGNMENT: 24 bits + three 32-bit values */\
  91         u8                                      field_flags;        /* Access, update, and lock bits */\
  92         u8                                      attribute;          /* From access_as keyword */\
  93         u8                                      access_byte_width;  /* Read/Write size in bytes */\
  94         u32                                     bit_length;         /* Length of field in bits */\
  95         u32                                     base_byte_offset;   /* Byte offset within containing object */\
  96         u8                                      start_field_bit_offset;/* Bit offset within first field datum (0-63) */\
  97         u8                                      access_bit_width;   /* Read/Write size in bits (8-64) */\
  98         u32                                     value;              /* Value to store into the Bank or Index register */\
  99         struct acpi_namespace_node              *node;              /* Link back to parent node */
 100
 101
 102 /*
 103  * Fields common to both Strings and Buffers
 104  */
 105 #define ACPI_COMMON_BUFFER_INFO \
 106         u32                                     length;
 107
 108
 109 /*
 110  * Common fields for objects that support ASL notifications
 111  */
 112 #define ACPI_COMMON_NOTIFY_INFO \
 113         union acpi_operand_object               *system_notify;     /* Handler for system notifies */\
 114         union acpi_operand_object               *device_notify;     /* Handler for driver notifies */\
 115         union acpi_operand_object               *handler;           /* Handler for Address space */
 116
 117
 118 /******************************************************************************
 119  *
 120  * Basic data types
 121  *
 122  *****************************************************************************/
 123
 124 struct acpi_object_common
 125 {
 126         ACPI_OBJECT_COMMON_HEADER
 127 };
 128
 129
 130 struct acpi_object_integer
 131 {
 132         ACPI_OBJECT_COMMON_HEADER
 133         acpi_integer                            value;
 134 };
 135
 136
 137 /*
 138  * Note: The String and Buffer object must be identical through the Pointer
 139  * element.  There is code that depends on this.
 140  */
 141 struct acpi_object_string           /* Null terminated, ASCII characters only */
 142 {
 143         ACPI_OBJECT_COMMON_HEADER
 144         ACPI_COMMON_BUFFER_INFO
 145         char                                    *pointer;           /* String in AML stream or allocated string */
 146 };
 147
 148
 149 struct acpi_object_buffer
 150 {
 151         ACPI_OBJECT_COMMON_HEADER
 152         ACPI_COMMON_BUFFER_INFO
 153         u8                                      *pointer;           /* Buffer in AML stream or allocated buffer */
 154         struct acpi_namespace_node              *node;              /* Link back to parent node */
 155         u8                                      *aml_start;
 156         u32                                     aml_length;
 157 };
 158
 159
 160 struct acpi_object_package
 161 {
 162         ACPI_OBJECT_COMMON_HEADER
 163
 164         u32                                     count;              /* # of elements in package */
 165         u32                                     aml_length;
 166         u8                                      *aml_start;
 167         struct acpi_namespace_node              *node;              /* Link back to parent node */
 168         union acpi_operand_object               **elements;         /* Array of pointers to acpi_objects */
 169 };
 170
 171
 172 /******************************************************************************
 173  *
 174  * Complex data types
 175  *
 176  *****************************************************************************/
 177
 178 struct acpi_object_event
 179 {
 180         ACPI_OBJECT_COMMON_HEADER
 181         void                                    *semaphore;
 182 };
 183
 184
 185 #define ACPI_INFINITE_CONCURRENCY   0xFF
 186
 187 typedef
 188 acpi_status (*ACPI_INTERNAL_METHOD) (
 189         struct acpi_walk_state          *walk_state);
 190
 191 struct acpi_object_method
 192 {
 193         ACPI_OBJECT_COMMON_HEADER
 194         u8                                      method_flags;
 195         u8                                      param_count;
 196         u32                                     aml_length;
 197         void                                    *semaphore;
 198         u8                                      *aml_start;
 199         ACPI_INTERNAL_METHOD            implementation;
 200         u8                                      concurrency;
 201         u8                                      thread_count;
 202         acpi_owner_id                           owner_id;
 203 };
 204
 205
 206 struct acpi_object_mutex
 207 {
 208         ACPI_OBJECT_COMMON_HEADER
 209         u8                                      sync_level;         /* 0-15, specified in Mutex() call */
 210         u16                                     acquisition_depth;  /* Allow multiple Acquires, same thread */
 211         struct acpi_thread_state                *owner_thread;      /* Current owner of the mutex */
 212         void                                    *semaphore;         /* Actual OS synchronization object */
 213         union acpi_operand_object               *prev;              /* Link for list of acquired mutexes */
 214         union acpi_operand_object               *next;              /* Link for list of acquired mutexes */
 215         struct acpi_namespace_node              *node;              /* Containing namespace node */
 216         u8                                      original_sync_level; /* Owner's original sync level (0-15) */
 217 };
 218
 219
 220 struct acpi_object_region
 221 {
 222         ACPI_OBJECT_COMMON_HEADER
 223
 224         u8                                      space_id;
 225         union acpi_operand_object               *handler;           /* Handler for region access */
 226         struct acpi_namespace_node              *node;              /* Containing namespace node */
 227         union acpi_operand_object               *next;
 228         u32                                     length;
 229         acpi_physical_address                   address;
 230 };
 231
 232
 233 /******************************************************************************
 234  *
 235  * Objects that can be notified.  All share a common notify_info area.
 236  *
 237  *****************************************************************************/
 238
 239 struct acpi_object_notify_common            /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */
 240 {
 241         ACPI_OBJECT_COMMON_HEADER
 242         ACPI_COMMON_NOTIFY_INFO
 243 };
 244
 245
 246 struct acpi_object_device
 247 {
 248         ACPI_OBJECT_COMMON_HEADER
 249         ACPI_COMMON_NOTIFY_INFO
 250         struct acpi_gpe_block_info              *gpe_block;
 251 };
 252
 253
 254 struct acpi_object_power_resource
 255 {
 256         ACPI_OBJECT_COMMON_HEADER
 257         ACPI_COMMON_NOTIFY_INFO
 258         u32                                     system_level;
 259         u32                                     resource_order;
 260 };
 261
 262
 263 struct acpi_object_processor
 264 {
 265         ACPI_OBJECT_COMMON_HEADER
 266         ACPI_COMMON_NOTIFY_INFO
 267         u32                                     proc_id;
 268         u32                                     length;
 269         acpi_io_address                         address;
 270 };
 271
 272
 273 struct acpi_object_thermal_zone
 274 {
 275         ACPI_OBJECT_COMMON_HEADER
 276         ACPI_COMMON_NOTIFY_INFO
 277 };
 278
 279
 280 /******************************************************************************
 281  *
 282  * Fields.  All share a common header/info field.
 283  *
 284  *****************************************************************************/
 285
 286 struct acpi_object_field_common                         /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */
 287 {
 288         ACPI_OBJECT_COMMON_HEADER
 289         ACPI_COMMON_FIELD_INFO
 290         union acpi_operand_object               *region_obj;        /* Containing Operation Region object */
 291                           /* (REGION/BANK fields only) */
 292 };
 293
 294
 295 struct acpi_object_region_field
 296 {
 297         ACPI_OBJECT_COMMON_HEADER
 298         ACPI_COMMON_FIELD_INFO
 299         union acpi_operand_object               *region_obj;        /* Containing op_region object */
 300 };
 301
 302
 303 struct acpi_object_bank_field
 304 {
 305         ACPI_OBJECT_COMMON_HEADER
 306         ACPI_COMMON_FIELD_INFO
 307         union acpi_operand_object               *region_obj;        /* Containing op_region object */
 308         union acpi_operand_object               *bank_obj;          /* bank_select Register object */
 309 };
 310
 311
 312 struct acpi_object_index_field
 313 {
 314         ACPI_OBJECT_COMMON_HEADER
 315         ACPI_COMMON_FIELD_INFO
 316
 317         /*
 318          * No "region_obj" pointer needed since the Index and Data registers
 319          * are each field definitions unto themselves.
 320          */
 321         union acpi_operand_object               *index_obj;         /* Index register */
 322         union acpi_operand_object               *data_obj;          /* Data register */
 323 };
 324
 325
 326 /* The buffer_field is different in that it is part of a Buffer, not an op_region */
 327
 328 struct acpi_object_buffer_field
 329 {
 330         ACPI_OBJECT_COMMON_HEADER
 331         ACPI_COMMON_FIELD_INFO
 332         union acpi_operand_object               *buffer_obj;        /* Containing Buffer object */
 333 };
 334
 335
 336 /******************************************************************************
 337  *
 338  * Objects for handlers
 339  *
 340  *****************************************************************************/
 341
 342 struct acpi_object_notify_handler
 343 {
 344         ACPI_OBJECT_COMMON_HEADER
 345         struct acpi_namespace_node              *node;              /* Parent device */
 346         acpi_notify_handler                     handler;
 347         void                                    *context;
 348 };
 349
 350
 351 /* Flags for address handler */
 352
 353 #define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED  0x1
 354
 355
 356 struct acpi_object_addr_handler
 357 {
 358         ACPI_OBJECT_COMMON_HEADER
 359         u8                                      space_id;
 360         u16                                     hflags;
 361         acpi_adr_space_handler                  handler;
 362         struct acpi_namespace_node              *node;              /* Parent device */
 363         void                                    *context;
 364         acpi_adr_space_setup                    setup;
 365         union acpi_operand_object               *region_list;       /* regions using this handler */
 366         union acpi_operand_object               *next;
 367 };
 368
 369
 370 /******************************************************************************
 371  *
 372  * Special internal objects
 373  *
 374  *****************************************************************************/
 375
 376 /*
 377  * The Reference object type is used for these opcodes:
 378  * Arg[0-6], Local[0-7], index_op, name_op, zero_op, one_op, ones_op, debug_op
 379  */
 380 struct acpi_object_reference
 381 {
 382         ACPI_OBJECT_COMMON_HEADER
 383         u8                                      target_type;        /* Used for index_op */
 384         u16                                     opcode;
 385         u32                                     offset;             /* Used for arg_op, local_op, and index_op */
 386         void                                    *object;            /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object  */
 387         struct acpi_namespace_node              *node;
 388         union acpi_operand_object               **where;
 389 };
 390
 391
 392 /*
 393  * Extra object is used as additional storage for types that
 394  * have AML code in their declarations (term_args) that must be
 395  * evaluated at run time.
 396  *
 397  * Currently: Region and field_unit types
 398  */
 399 struct acpi_object_extra
 400 {
 401         ACPI_OBJECT_COMMON_HEADER
 402         u8                                      byte_fill1;
 403         u16                                     word_fill1;
 404         u32                                     aml_length;
 405         u8                                      *aml_start;
 406         struct acpi_namespace_node              *method_REG;        /* _REG method for this region (if any) */
 407         void                                    *region_context;    /* Region-specific data */
 408 };
 409
 410
 411 /* Additional data that can be attached to namespace nodes */
 412
 413 struct acpi_object_data
 414 {
 415         ACPI_OBJECT_COMMON_HEADER
 416         acpi_object_handler                     handler;
 417         void                                    *pointer;
 418 };
 419
 420
 421 /* Structure used when objects are cached for reuse */
 422
 423 struct acpi_object_cache_list
 424 {
 425         ACPI_OBJECT_COMMON_HEADER
 426         union acpi_operand_object               *next;              /* Link for object cache and internal lists*/
 427 };
 428
 429
 430 /******************************************************************************
 431  *
 432  * union acpi_operand_object Descriptor - a giant union of all of the above
 433  *
 434  *****************************************************************************/
 435
 436 union acpi_operand_object
 437 {
 438         struct acpi_object_common               common;
 439         struct acpi_object_integer              integer;
 440         struct acpi_object_string               string;
 441         struct acpi_object_buffer               buffer;
 442         struct acpi_object_package              package;
 443         struct acpi_object_event                event;
 444         struct acpi_object_method               method;
 445         struct acpi_object_mutex                mutex;
 446         struct acpi_object_region               region;
 447         struct acpi_object_notify_common        common_notify;
 448         struct acpi_object_device               device;
 449         struct acpi_object_power_resource       power_resource;
 450         struct acpi_object_processor            processor;
 451         struct acpi_object_thermal_zone         thermal_zone;
 452         struct acpi_object_field_common         common_field;
 453         struct acpi_object_region_field         field;
 454         struct acpi_object_buffer_field         buffer_field;
 455         struct acpi_object_bank_field           bank_field;
 456         struct acpi_object_index_field          index_field;
 457         struct acpi_object_notify_handler       notify;
 458         struct acpi_object_addr_handler         address_space;
 459         struct acpi_object_reference            reference;
 460         struct acpi_object_extra                extra;
 461         struct acpi_object_data                 data;
 462         struct acpi_object_cache_list           cache;
 463 };
 464
 465
 466 /******************************************************************************
 467  *
 468  * union acpi_descriptor - objects that share a common descriptor identifier
 469  *
 470  *****************************************************************************/
 471
 472 /* Object descriptor types */
 473
 474 #define ACPI_DESC_TYPE_CACHED           0x01        /* Used only when object is cached */
 475 #define ACPI_DESC_TYPE_STATE            0x02
 476 #define ACPI_DESC_TYPE_STATE_UPDATE     0x03
 477 #define ACPI_DESC_TYPE_STATE_PACKAGE    0x04
 478 #define ACPI_DESC_TYPE_STATE_CONTROL    0x05
 479 #define ACPI_DESC_TYPE_STATE_RPSCOPE    0x06
 480 #define ACPI_DESC_TYPE_STATE_PSCOPE     0x07
 481 #define ACPI_DESC_TYPE_STATE_WSCOPE     0x08
 482 #define ACPI_DESC_TYPE_STATE_RESULT     0x09
 483 #define ACPI_DESC_TYPE_STATE_NOTIFY     0x0A
 484 #define ACPI_DESC_TYPE_STATE_THREAD     0x0B
 485 #define ACPI_DESC_TYPE_WALK             0x0C
 486 #define ACPI_DESC_TYPE_PARSER           0x0D
 487 #define ACPI_DESC_TYPE_OPERAND          0x0E
 488 #define ACPI_DESC_TYPE_NAMED            0x0F
 489 #define ACPI_DESC_TYPE_MAX              0x0F
 490
 491
 492 union acpi_descriptor
 493 {
 494         u8                                      descriptor_id;  /* To differentiate various internal objs */\
 495         union acpi_operand_object               object;
 496         struct acpi_namespace_node              node;
 497         union acpi_parse_object                 op;
 498 };
 499
 500
 501 #endif /* _ACOBJECT_H */