drivers/bus/acpi/include/acobject.h

   1
   2 /******************************************************************************
   3  *
   4  * Name: acobject.h - Definition of ACPI_OPERAND_OBJECT  (Internal object only)
   5  *       $Revision$
   6  *
   7  *****************************************************************************/
   8
   9 /*
  10  *  Copyright (C) 2000, 2001 R. Byron Moore
  11  *
  12  *  This program is free software; you can redistribute it and/or modify
  13  *  it under the terms of the GNU General Public License as published by
  14  *  the Free Software Foundation; either version 2 of the License, or
  15  *  (at your option) any later version.
  16  *
  17  *  This program is distributed in the hope that it will be useful,
  18  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  *  GNU General Public License for more details.
  21  *
  22  *  You should have received a copy of the GNU General Public License
  23  *  along with this program; if not, write to the Free Software
  24  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  25  */
  26
  27 #ifndef _ACOBJECT_H
  28 #define _ACOBJECT_H
  29
  30
  31 /*
  32  * The ACPI_OPERAND_OBJECT  is used to pass AML operands from the dispatcher
  33  * to the interpreter, and to keep track of the various handlers such as
  34  * address space handlers and notify handlers.  The object is a constant
  35  * size in order to allow them to be cached and reused.
  36  *
  37  * All variants of the ACPI_OPERAND_OBJECT  are defined with the same
  38  * sequence of field types, with fields that are not used in a particular
  39  * variant being named "Reserved".  This is not strictly necessary, but
  40  * may in some circumstances simplify understanding if these structures
  41  * need to be displayed in a debugger having limited (or no) support for
  42  * union types.  It also simplifies some debug code in Dump_table() which
  43  * dumps multi-level values: fetching Buffer.Pointer suffices to pick up
  44  * the value or next level for any of several types.
  45  */
  46
  47 /******************************************************************************
  48  *
  49  * Common Descriptors
  50  *
  51  *****************************************************************************/
  52
  53 /*
  54  * Common area for all objects.
  55  *
  56  * Data_type is used to differentiate between internal descriptors, and MUST
  57  * be the first byte in this structure.
  58  */
  59
  60
  61 #define ACPI_OBJECT_COMMON_HEADER           /* 32-bits plus 8-bit flag */\
  62         u8                          data_type;          /* To differentiate various internal objs */\
  63         u8                          type;               /* ACPI_OBJECT_TYPE */\
  64         u16                         reference_count;    /* For object deletion management */\
  65         u8                          flags; \
  66
  67 /* Defines for flag byte above */
  68
  69 #define AOPOBJ_STATIC_ALLOCATION    0x1
  70 #define AOPOBJ_DATA_VALID           0x2
  71 #define AOPOBJ_INITIALIZED          0x4
  72
  73
  74 /*
  75  * Common bitfield for the field objects
  76  */
  77 #define ACPI_COMMON_FIELD_INFO              /* Three 32-bit values plus 8*/\
  78         u8                          granularity;\
  79         u16                         length; \
  80         u32                         offset;             /* Byte offset within containing object */\
  81         u8                          bit_offset;         /* Bit offset within min read/write data unit */\
  82         u8                          access;             /* Access_type */\
  83         u8                          lock_rule;\
  84         u8                          update_rule;\
  85         u8                          access_attribute;
  86
  87
  88 /******************************************************************************
  89  *
  90  * Individual Object Descriptors
  91  *
  92  *****************************************************************************/
  93
  94
  95 typedef struct /* COMMON */
  96 {
  97         ACPI_OBJECT_COMMON_HEADER
  98
  99 } ACPI_OBJECT_COMMON;
 100
 101
 102 typedef struct /* CACHE_LIST */
 103 {
 104         ACPI_OBJECT_COMMON_HEADER
 105         union acpi_operand_obj      *next;              /* Link for object cache and internal lists*/
 106
 107 } ACPI_OBJECT_CACHE_LIST;
 108
 109
 110 typedef struct /* NUMBER - has value */
 111 {
 112         ACPI_OBJECT_COMMON_HEADER
 113
 114         ACPI_INTEGER                value;
 115
 116 } ACPI_OBJECT_INTEGER;
 117
 118
 119 typedef struct /* STRING - has length and pointer - Null terminated, ASCII characters only */
 120 {
 121         ACPI_OBJECT_COMMON_HEADER
 122
 123         u32                         length;
 124         NATIVE_CHAR                 *pointer;       /* String value in AML stream or in allocated space */
 125
 126 } ACPI_OBJECT_STRING;
 127
 128
 129 typedef struct /* BUFFER - has length and pointer - not null terminated */
 130 {
 131         ACPI_OBJECT_COMMON_HEADER
 132
 133         u32                         length;
 134         u8                          *pointer;       /* points to the buffer in allocated space */
 135
 136 } ACPI_OBJECT_BUFFER;
 137
 138
 139 typedef struct /* PACKAGE - has count, elements, next element */
 140 {
 141         ACPI_OBJECT_COMMON_HEADER
 142
 143         u32                         count;          /* # of elements in package */
 144
 145         union acpi_operand_obj      **elements;     /* Array of pointers to Acpi_objects */
 146         union acpi_operand_obj      **next_element; /* used only while initializing */
 147
 148 } ACPI_OBJECT_PACKAGE;
 149
 150
 151 typedef struct /* FIELD UNIT */
 152 {
 153         ACPI_OBJECT_COMMON_HEADER
 154
 155         ACPI_COMMON_FIELD_INFO
 156
 157         union acpi_operand_obj      *extra;             /* Pointer to executable AML (in field definition) */
 158         ACPI_NAMESPACE_NODE         *node;              /* containing object */
 159         union acpi_operand_obj      *container;         /* Containing object (Buffer) */
 160
 161 } ACPI_OBJECT_FIELD_UNIT;
 162
 163
 164 typedef struct /* DEVICE - has handle and notification handler/context */
 165 {
 166         ACPI_OBJECT_COMMON_HEADER
 167
 168         union acpi_operand_obj      *sys_handler;        /* Handler for system notifies */
 169         union acpi_operand_obj      *drv_handler;        /* Handler for driver notifies */
 170         union acpi_operand_obj      *addr_handler;       /* Handler for Address space */
 171
 172 } ACPI_OBJECT_DEVICE;
 173
 174
 175 typedef struct /* EVENT */
 176 {
 177         ACPI_OBJECT_COMMON_HEADER
 178         void                        *semaphore;
 179
 180 } ACPI_OBJECT_EVENT;
 181
 182
 183 #define INFINITE_CONCURRENCY        0xFF
 184
 185 typedef struct /* METHOD */
 186 {
 187         ACPI_OBJECT_COMMON_HEADER
 188         u8                          method_flags;
 189         u8                          param_count;
 190
 191         u32                         pcode_length;
 192
 193         void                        *semaphore;
 194         u8                          *pcode;
 195
 196         u8                          concurrency;
 197         u8                          thread_count;
 198         ACPI_OWNER_ID               owning_id;
 199
 200 } ACPI_OBJECT_METHOD;
 201
 202
 203 typedef struct acpi_obj_mutex /* MUTEX */
 204 {
 205         ACPI_OBJECT_COMMON_HEADER
 206         u16                         sync_level;
 207         u16                         acquisition_depth;
 208
 209         void                        *semaphore;
 210         void                        *owner;
 211         union acpi_operand_obj      *prev;              /* Link for list of acquired mutexes */
 212         union acpi_operand_obj      *next;              /* Link for list of acquired mutexes */
 213
 214 } ACPI_OBJECT_MUTEX;
 215
 216
 217 typedef struct /* REGION */
 218 {
 219         ACPI_OBJECT_COMMON_HEADER
 220
 221         u8                          space_id;
 222         u32                         length;
 223         ACPI_PHYSICAL_ADDRESS       address;
 224         union acpi_operand_obj      *extra;             /* Pointer to executable AML (in region definition) */
 225
 226         union acpi_operand_obj      *addr_handler;      /* Handler for system notifies */
 227         ACPI_NAMESPACE_NODE         *node;              /* containing object */
 228         union acpi_operand_obj      *next;
 229
 230 } ACPI_OBJECT_REGION;
 231
 232
 233 typedef struct /* POWER RESOURCE - has Handle and notification handler/context*/
 234 {
 235         ACPI_OBJECT_COMMON_HEADER
 236
 237         u32                         system_level;
 238         u32                         resource_order;
 239
 240         union acpi_operand_obj      *sys_handler;       /* Handler for system notifies */
 241         union acpi_operand_obj      *drv_handler;       /* Handler for driver notifies */
 242
 243 } ACPI_OBJECT_POWER_RESOURCE;
 244
 245
 246 typedef struct /* PROCESSOR - has Handle and notification handler/context*/
 247 {
 248         ACPI_OBJECT_COMMON_HEADER
 249
 250         u32                         proc_id;
 251         u32                         length;
 252         ACPI_IO_ADDRESS             address;
 253
 254         union acpi_operand_obj      *sys_handler;       /* Handler for system notifies */
 255         union acpi_operand_obj      *drv_handler;       /* Handler for driver notifies */
 256         union acpi_operand_obj      *addr_handler;      /* Handler for Address space */
 257
 258 } ACPI_OBJECT_PROCESSOR;
 259
 260
 261 typedef struct /* THERMAL ZONE - has Handle and Handler/Context */
 262 {
 263         ACPI_OBJECT_COMMON_HEADER
 264
 265         union acpi_operand_obj      *sys_handler;       /* Handler for system notifies */
 266         union acpi_operand_obj      *drv_handler;       /* Handler for driver notifies */
 267         union acpi_operand_obj      *addr_handler;      /* Handler for Address space */
 268
 269 } ACPI_OBJECT_THERMAL_ZONE;
 270
 271
 272 /*
 273  * Internal types
 274  */
 275
 276
 277 typedef struct /* FIELD */
 278 {
 279         ACPI_OBJECT_COMMON_HEADER
 280
 281         ACPI_COMMON_FIELD_INFO
 282
 283         union acpi_operand_obj      *container;         /* Containing object */
 284
 285 } ACPI_OBJECT_FIELD;
 286
 287
 288 typedef struct /* BANK FIELD */
 289 {
 290         ACPI_OBJECT_COMMON_HEADER
 291
 292         ACPI_COMMON_FIELD_INFO
 293         u32                         value;              /* Value to store into Bank_select */
 294
 295         ACPI_HANDLE                 bank_select;        /* Bank select register */
 296         union acpi_operand_obj      *container;         /* Containing object */
 297
 298 } ACPI_OBJECT_BANK_FIELD;
 299
 300
 301 typedef struct /* INDEX FIELD */
 302 {
 303         /*
 304          * No container pointer needed since the index and data register definitions
 305          * will define how to access the respective registers
 306          */
 307         ACPI_OBJECT_COMMON_HEADER
 308
 309         ACPI_COMMON_FIELD_INFO
 310         u32                         value;              /* Value to store into Index register */
 311
 312         ACPI_HANDLE                 index;              /* Index register */
 313         ACPI_HANDLE                 data;               /* Data register */
 314
 315 } ACPI_OBJECT_INDEX_FIELD;
 316
 317
 318 typedef struct /* NOTIFY HANDLER */
 319 {
 320         ACPI_OBJECT_COMMON_HEADER
 321
 322         ACPI_NAMESPACE_NODE         *node;               /* Parent device */
 323         NOTIFY_HANDLER              handler;
 324         void                        *context;
 325
 326 } ACPI_OBJECT_NOTIFY_HANDLER;
 327
 328
 329 /* Flags for address handler */
 330
 331 #define ADDR_HANDLER_DEFAULT_INSTALLED  0x1
 332
 333
 334 typedef struct /* ADDRESS HANDLER */
 335 {
 336         ACPI_OBJECT_COMMON_HEADER
 337
 338         u8                          space_id;
 339         u16                         hflags;
 340         ADDRESS_SPACE_HANDLER       handler;
 341
 342         ACPI_NAMESPACE_NODE         *node;              /* Parent device */
 343         void                        *context;
 344         ADDRESS_SPACE_SETUP         setup;
 345         union acpi_operand_obj      *region_list;       /* regions using this handler */
 346         union acpi_operand_obj      *next;
 347
 348 } ACPI_OBJECT_ADDR_HANDLER;
 349
 350
 351 /*
 352  * The Reference object type is used for these opcodes:
 353  * Arg[0-6], Local[0-7], Index_op, Name_op, Zero_op, One_op, Ones_op, Debug_op
 354  */
 355
 356 typedef struct /* Reference - Local object type */
 357 {
 358         ACPI_OBJECT_COMMON_HEADER
 359
 360         u8                          target_type;        /* Used for Index_op */
 361         u16                         opcode;
 362         u32                         offset;             /* Used for Arg_op, Local_op, and Index_op */
 363
 364         void                        *object;            /* Name_op=>HANDLE to obj, Index_op=>ACPI_OPERAND_OBJECT */
 365         ACPI_NAMESPACE_NODE         *node;
 366         union acpi_operand_obj      **where;
 367
 368 } ACPI_OBJECT_REFERENCE;
 369
 370
 371 /*
 372  * Extra object is used as additional storage for types that
 373  * have AML code in their declarations (Term_args) that must be
 374  * evaluated at run time.
 375  *
 376  * Currently: Region and Field_unit types
 377  */
 378
 379 typedef struct /* EXTRA */
 380 {
 381         ACPI_OBJECT_COMMON_HEADER
 382         u8                          byte_fill1;
 383         u16                         word_fill1;
 384         u32                         pcode_length;
 385         u8                          *pcode;
 386         ACPI_NAMESPACE_NODE         *method_REG;        /* _REG method for this region (if any) */
 387         void                        *region_context;    /* Region-specific data */
 388
 389 } ACPI_OBJECT_EXTRA;
 390
 391
 392 /******************************************************************************
 393  *
 394  * ACPI_OPERAND_OBJECT  Descriptor - a giant union of all of the above
 395  *
 396  *****************************************************************************/
 397
 398 typedef union acpi_operand_obj
 399 {
 400         ACPI_OBJECT_COMMON          common;
 401         ACPI_OBJECT_CACHE_LIST      cache;
 402         ACPI_OBJECT_INTEGER         integer;
 403         ACPI_OBJECT_STRING          string;
 404         ACPI_OBJECT_BUFFER          buffer;
 405         ACPI_OBJECT_PACKAGE         package;
 406         ACPI_OBJECT_FIELD_UNIT      field_unit;
 407         ACPI_OBJECT_DEVICE          device;
 408         ACPI_OBJECT_EVENT           event;
 409         ACPI_OBJECT_METHOD          method;
 410         ACPI_OBJECT_MUTEX           mutex;
 411         ACPI_OBJECT_REGION          region;
 412         ACPI_OBJECT_POWER_RESOURCE  power_resource;
 413         ACPI_OBJECT_PROCESSOR       processor;
 414         ACPI_OBJECT_THERMAL_ZONE    thermal_zone;
 415         ACPI_OBJECT_FIELD           field;
 416         ACPI_OBJECT_BANK_FIELD      bank_field;
 417         ACPI_OBJECT_INDEX_FIELD     index_field;
 418         ACPI_OBJECT_REFERENCE       reference;
 419         ACPI_OBJECT_NOTIFY_HANDLER  notify_handler;
 420         ACPI_OBJECT_ADDR_HANDLER    addr_handler;
 421         ACPI_OBJECT_EXTRA           extra;
 422
 423 } ACPI_OPERAND_OBJECT;
 424
 425 #endif /* _ACOBJECT_H */