1 2 /****************************************************************************** 3 * 4 * Name: acobject.h - Definition of union acpi_operand_object (Internal object only) 5 * 6 *****************************************************************************/ 7 8 /* 9 * Copyright (C) 2000 - 2008, Intel Corp. 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 /* acpisrc:struct_defs -- for acpisrc conversion */ 49 50 /* 51 * The union 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 * descriptor_type is used to differentiate between internal descriptors, and 75 * must be in the same place across all descriptors 76 * 77 * Note: The descriptor_type and Type fields must appear in the identical 78 * position in both the struct acpi_namespace_node and union acpi_operand_object 79 * structures. 80 */ 81 #define ACPI_OBJECT_COMMON_HEADER \ 82 union acpi_operand_object *next_object; /* Objects linked to parent NS node */\ 83 u8 descriptor_type; /* To differentiate various internal objs */\ 84 u8 type; /* acpi_object_type */\ 85 u16 reference_count; /* For object deletion management */\ 86 u8 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 95 #define AOPOBJ_STATIC_POINTER 0x02 96 #define AOPOBJ_DATA_VALID 0x04 97 #define AOPOBJ_OBJECT_INITIALIZED 0x08 98 #define AOPOBJ_SETUP_COMPLETE 0x10 99 #define AOPOBJ_SINGLE_DATUM 0x20 100 101 /****************************************************************************** 102 * 103 * Basic data types 104 * 105 *****************************************************************************/ 106 107 struct acpi_object_common { 108 ACPI_OBJECT_COMMON_HEADER}; 109 110 struct acpi_object_integer { 111 ACPI_OBJECT_COMMON_HEADER u8 fill[3]; /* Prevent warning on some compilers */ 112 acpi_integer value; 113 }; 114 115 /* 116 * Note: The String and Buffer object must be identical through the Pointer 117 * and length elements. There is code that depends on this. 118 * 119 * Fields common to both Strings and Buffers 120 */ 121 #define ACPI_COMMON_BUFFER_INFO(_type) \ 122 _type *pointer; \ 123 u32 length; 124 125 struct acpi_object_string { /* Null terminated, ASCII characters only */ 126 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(char) /* String in AML stream or allocated string */ 127 }; 128 129 struct acpi_object_buffer { 130 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(u8) /* Buffer in AML stream or allocated buffer */ 131 u32 aml_length; 132 u8 *aml_start; 133 struct acpi_namespace_node *node; /* Link back to parent node */ 134 }; 135 136 struct acpi_object_package { 137 ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Link back to parent node */ 138 union acpi_operand_object **elements; /* Array of pointers to acpi_objects */ 139 u8 *aml_start; 140 u32 aml_length; 141 u32 count; /* # of elements in package */ 142 }; 143 144 /****************************************************************************** 145 * 146 * Complex data types 147 * 148 *****************************************************************************/ 149 150 struct acpi_object_event { 151 ACPI_OBJECT_COMMON_HEADER acpi_semaphore os_semaphore; /* Actual OS synchronization object */ 152 }; 153 154 struct acpi_object_mutex { 155 ACPI_OBJECT_COMMON_HEADER u8 sync_level; /* 0-15, specified in Mutex() call */ 156 u16 acquisition_depth; /* Allow multiple Acquires, same thread */ 157 acpi_mutex os_mutex; /* Actual OS synchronization object */ 158 acpi_thread_id thread_id; /* Current owner of the mutex */ 159 struct acpi_thread_state *owner_thread; /* Current owner of the mutex */ 160 union acpi_operand_object *prev; /* Link for list of acquired mutexes */ 161 union acpi_operand_object *next; /* Link for list of acquired mutexes */ 162 struct acpi_namespace_node *node; /* Containing namespace node */ 163 u8 original_sync_level; /* Owner's original sync level (0-15) */ 164 }; 165 166 struct acpi_object_region { 167 ACPI_OBJECT_COMMON_HEADER u8 space_id; 168 struct acpi_namespace_node *node; /* Containing namespace node */ 169 union acpi_operand_object *handler; /* Handler for region access */ 170 union acpi_operand_object *next; 171 acpi_physical_address address; 172 u32 length; 173 }; 174 175 struct acpi_object_method { 176 ACPI_OBJECT_COMMON_HEADER u8 method_flags; 177 u8 param_count; 178 u8 sync_level; 179 union acpi_operand_object *mutex; 180 u8 *aml_start; 181 ACPI_INTERNAL_METHOD implementation; 182 u32 aml_length; 183 u8 thread_count; 184 acpi_owner_id owner_id; 185 }; 186 187 /****************************************************************************** 188 * 189 * Objects that can be notified. All share a common notify_info area. 190 * 191 *****************************************************************************/ 192 193 /* 194 * Common fields for objects that support ASL notifications 195 */ 196 #define ACPI_COMMON_NOTIFY_INFO \ 197 union acpi_operand_object *system_notify; /* Handler for system notifies */\ 198 union acpi_operand_object *device_notify; /* Handler for driver notifies */\ 199 union acpi_operand_object *handler; /* Handler for Address space */ 200 201 struct acpi_object_notify_common { /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */ 202 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO}; 203 204 struct acpi_object_device { 205 ACPI_OBJECT_COMMON_HEADER 206 ACPI_COMMON_NOTIFY_INFO struct acpi_gpe_block_info *gpe_block; 207 }; 208 209 struct acpi_object_power_resource { 210 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO u32 system_level; 211 u32 resource_order; 212 }; 213 214 struct acpi_object_processor { 215 ACPI_OBJECT_COMMON_HEADER 216 /* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */ 217 u8 proc_id; 218 u8 length; 219 ACPI_COMMON_NOTIFY_INFO acpi_io_address address; 220 }; 221 222 struct acpi_object_thermal_zone { 223 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO}; 224 225 /****************************************************************************** 226 * 227 * Fields. All share a common header/info field. 228 * 229 *****************************************************************************/ 230 231 /* 232 * Common bitfield for the field objects 233 * "Field Datum" -- a datum from the actual field object 234 * "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field 235 */ 236 #define ACPI_COMMON_FIELD_INFO \ 237 u8 field_flags; /* Access, update, and lock bits */\ 238 u8 attribute; /* From access_as keyword */\ 239 u8 access_byte_width; /* Read/Write size in bytes */\ 240 struct acpi_namespace_node *node; /* Link back to parent node */\ 241 u32 bit_length; /* Length of field in bits */\ 242 u32 base_byte_offset; /* Byte offset within containing object */\ 243 u32 value; /* Value to store into the Bank or Index register */\ 244 u8 start_field_bit_offset;/* Bit offset within first field datum (0-63) */\ 245 u8 access_bit_width; /* Read/Write size in bits (8-64) */ 246 247 struct acpi_object_field_common { /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */ 248 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Parent Operation Region object (REGION/BANK fields only) */ 249 }; 250 251 struct acpi_object_region_field { 252 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */ 253 }; 254 255 struct acpi_object_bank_field { 256 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */ 257 union acpi_operand_object *bank_obj; /* bank_select Register object */ 258 }; 259 260 struct acpi_object_index_field { 261 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO 262 /* 263 * No "RegionObj" pointer needed since the Index and Data registers 264 * are each field definitions unto themselves. 265 */ 266 union acpi_operand_object *index_obj; /* Index register */ 267 union acpi_operand_object *data_obj; /* Data register */ 268 }; 269 270 /* The buffer_field is different in that it is part of a Buffer, not an op_region */ 271 272 struct acpi_object_buffer_field { 273 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *buffer_obj; /* Containing Buffer object */ 274 }; 275 276 /****************************************************************************** 277 * 278 * Objects for handlers 279 * 280 *****************************************************************************/ 281 282 struct acpi_object_notify_handler { 283 ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Parent device */ 284 acpi_notify_handler handler; 285 void *context; 286 }; 287 288 struct acpi_object_addr_handler { 289 ACPI_OBJECT_COMMON_HEADER u8 space_id; 290 u8 handler_flags; 291 acpi_adr_space_handler handler; 292 struct acpi_namespace_node *node; /* Parent device */ 293 void *context; 294 acpi_adr_space_setup setup; 295 union acpi_operand_object *region_list; /* regions using this handler */ 296 union acpi_operand_object *next; 297 }; 298 299 /* Flags for address handler (handler_flags) */ 300 301 #define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED 0x01 302 303 /****************************************************************************** 304 * 305 * Special internal objects 306 * 307 *****************************************************************************/ 308 309 /* 310 * The Reference object is used for these opcodes: 311 * Arg[0-6], Local[0-7], index_op, name_op, ref_of_op, load_op, load_table_op, debug_op 312 * The Reference.Class differentiates these types. 313 */ 314 struct acpi_object_reference { 315 ACPI_OBJECT_COMMON_HEADER u8 class; /* Reference Class */ 316 u8 target_type; /* Used for Index Op */ 317 u8 reserved; 318 void *object; /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object */ 319 struct acpi_namespace_node *node; /* ref_of or Namepath */ 320 union acpi_operand_object **where; /* Target of Index */ 321 u32 value; /* Used for Local/Arg/Index/ddb_handle */ 322 }; 323 324 /* Values for Reference.Class above */ 325 326 typedef enum { 327 ACPI_REFCLASS_LOCAL = 0, /* Method local */ 328 ACPI_REFCLASS_ARG = 1, /* Method argument */ 329 ACPI_REFCLASS_REFOF = 2, /* Result of ref_of() TBD: Split to Ref/Node and Ref/operand_obj? */ 330 ACPI_REFCLASS_INDEX = 3, /* Result of Index() */ 331 ACPI_REFCLASS_TABLE = 4, /* ddb_handle - Load(), load_table() */ 332 ACPI_REFCLASS_NAME = 5, /* Reference to a named object */ 333 ACPI_REFCLASS_DEBUG = 6, /* Debug object */ 334 335 ACPI_REFCLASS_MAX = 6 336 } ACPI_REFERENCE_CLASSES; 337 338 /* 339 * Extra object is used as additional storage for types that 340 * have AML code in their declarations (term_args) that must be 341 * evaluated at run time. 342 * 343 * Currently: Region and field_unit types 344 */ 345 struct acpi_object_extra { 346 ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *method_REG; /* _REG method for this region (if any) */ 347 void *region_context; /* Region-specific data */ 348 u8 *aml_start; 349 u32 aml_length; 350 }; 351 352 /* Additional data that can be attached to namespace nodes */ 353 354 struct acpi_object_data { 355 ACPI_OBJECT_COMMON_HEADER acpi_object_handler handler; 356 void *pointer; 357 }; 358 359 /* Structure used when objects are cached for reuse */ 360 361 struct acpi_object_cache_list { 362 ACPI_OBJECT_COMMON_HEADER union acpi_operand_object *next; /* Link for object cache and internal lists */ 363 }; 364 365 /****************************************************************************** 366 * 367 * union acpi_operand_object Descriptor - a giant union of all of the above 368 * 369 *****************************************************************************/ 370 371 union acpi_operand_object { 372 struct acpi_object_common common; 373 struct acpi_object_integer integer; 374 struct acpi_object_string string; 375 struct acpi_object_buffer buffer; 376 struct acpi_object_package package; 377 struct acpi_object_event event; 378 struct acpi_object_method method; 379 struct acpi_object_mutex mutex; 380 struct acpi_object_region region; 381 struct acpi_object_notify_common common_notify; 382 struct acpi_object_device device; 383 struct acpi_object_power_resource power_resource; 384 struct acpi_object_processor processor; 385 struct acpi_object_thermal_zone thermal_zone; 386 struct acpi_object_field_common common_field; 387 struct acpi_object_region_field field; 388 struct acpi_object_buffer_field buffer_field; 389 struct acpi_object_bank_field bank_field; 390 struct acpi_object_index_field index_field; 391 struct acpi_object_notify_handler notify; 392 struct acpi_object_addr_handler address_space; 393 struct acpi_object_reference reference; 394 struct acpi_object_extra extra; 395 struct acpi_object_data data; 396 struct acpi_object_cache_list cache; 397 398 /* 399 * Add namespace node to union in order to simplify code that accepts both 400 * ACPI_OPERAND_OBJECTs and ACPI_NAMESPACE_NODEs. The structures share 401 * a common descriptor_type field in order to differentiate them. 402 */ 403 struct acpi_namespace_node node; 404 }; 405 406 /****************************************************************************** 407 * 408 * union acpi_descriptor - objects that share a common descriptor identifier 409 * 410 *****************************************************************************/ 411 412 /* Object descriptor types */ 413 414 #define ACPI_DESC_TYPE_CACHED 0x01 /* Used only when object is cached */ 415 #define ACPI_DESC_TYPE_STATE 0x02 416 #define ACPI_DESC_TYPE_STATE_UPDATE 0x03 417 #define ACPI_DESC_TYPE_STATE_PACKAGE 0x04 418 #define ACPI_DESC_TYPE_STATE_CONTROL 0x05 419 #define ACPI_DESC_TYPE_STATE_RPSCOPE 0x06 420 #define ACPI_DESC_TYPE_STATE_PSCOPE 0x07 421 #define ACPI_DESC_TYPE_STATE_WSCOPE 0x08 422 #define ACPI_DESC_TYPE_STATE_RESULT 0x09 423 #define ACPI_DESC_TYPE_STATE_NOTIFY 0x0A 424 #define ACPI_DESC_TYPE_STATE_THREAD 0x0B 425 #define ACPI_DESC_TYPE_WALK 0x0C 426 #define ACPI_DESC_TYPE_PARSER 0x0D 427 #define ACPI_DESC_TYPE_OPERAND 0x0E 428 #define ACPI_DESC_TYPE_NAMED 0x0F 429 #define ACPI_DESC_TYPE_MAX 0x0F 430 431 struct acpi_common_descriptor { 432 void *common_pointer; 433 u8 descriptor_type; /* To differentiate various internal objs */ 434 }; 435 436 union acpi_descriptor { 437 struct acpi_common_descriptor common; 438 union acpi_operand_object object; 439 struct acpi_namespace_node node; 440 union acpi_parse_object op; 441 }; 442 443 #pragma pack() 444 445 #endif /* _ACOBJECT_H */ 446