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 #define AOPOBJ_INVALID 0x40 /* Used if host OS won't allow an op_region address */ 101 102 /****************************************************************************** 103 * 104 * Basic data types 105 * 106 *****************************************************************************/ 107 108 struct acpi_object_common { 109 ACPI_OBJECT_COMMON_HEADER}; 110 111 struct acpi_object_integer { 112 ACPI_OBJECT_COMMON_HEADER u8 fill[3]; /* Prevent warning on some compilers */ 113 acpi_integer value; 114 }; 115 116 /* 117 * Note: The String and Buffer object must be identical through the Pointer 118 * and length elements. There is code that depends on this. 119 * 120 * Fields common to both Strings and Buffers 121 */ 122 #define ACPI_COMMON_BUFFER_INFO(_type) \ 123 _type *pointer; \ 124 u32 length; 125 126 struct acpi_object_string { /* Null terminated, ASCII characters only */ 127 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(char) /* String in AML stream or allocated string */ 128 }; 129 130 struct acpi_object_buffer { 131 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(u8) /* Buffer in AML stream or allocated buffer */ 132 u32 aml_length; 133 u8 *aml_start; 134 struct acpi_namespace_node *node; /* Link back to parent node */ 135 }; 136 137 struct acpi_object_package { 138 ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Link back to parent node */ 139 union acpi_operand_object **elements; /* Array of pointers to acpi_objects */ 140 u8 *aml_start; 141 u32 aml_length; 142 u32 count; /* # of elements in package */ 143 }; 144 145 /****************************************************************************** 146 * 147 * Complex data types 148 * 149 *****************************************************************************/ 150 151 struct acpi_object_event { 152 ACPI_OBJECT_COMMON_HEADER acpi_semaphore os_semaphore; /* Actual OS synchronization object */ 153 }; 154 155 struct acpi_object_mutex { 156 ACPI_OBJECT_COMMON_HEADER u8 sync_level; /* 0-15, specified in Mutex() call */ 157 u16 acquisition_depth; /* Allow multiple Acquires, same thread */ 158 acpi_mutex os_mutex; /* Actual OS synchronization object */ 159 acpi_thread_id thread_id; /* Current owner of the mutex */ 160 struct acpi_thread_state *owner_thread; /* Current owner of the mutex */ 161 union acpi_operand_object *prev; /* Link for list of acquired mutexes */ 162 union acpi_operand_object *next; /* Link for list of acquired mutexes */ 163 struct acpi_namespace_node *node; /* Containing namespace node */ 164 u8 original_sync_level; /* Owner's original sync level (0-15) */ 165 }; 166 167 struct acpi_object_region { 168 ACPI_OBJECT_COMMON_HEADER u8 space_id; 169 struct acpi_namespace_node *node; /* Containing namespace node */ 170 union acpi_operand_object *handler; /* Handler for region access */ 171 union acpi_operand_object *next; 172 acpi_physical_address address; 173 u32 length; 174 }; 175 176 struct acpi_object_method { 177 ACPI_OBJECT_COMMON_HEADER u8 method_flags; 178 u8 param_count; 179 u8 sync_level; 180 union acpi_operand_object *mutex; 181 u8 *aml_start; 182 ACPI_INTERNAL_METHOD implementation; 183 u32 aml_length; 184 u8 thread_count; 185 acpi_owner_id owner_id; 186 }; 187 188 /****************************************************************************** 189 * 190 * Objects that can be notified. All share a common notify_info area. 191 * 192 *****************************************************************************/ 193 194 /* 195 * Common fields for objects that support ASL notifications 196 */ 197 #define ACPI_COMMON_NOTIFY_INFO \ 198 union acpi_operand_object *system_notify; /* Handler for system notifies */\ 199 union acpi_operand_object *device_notify; /* Handler for driver notifies */\ 200 union acpi_operand_object *handler; /* Handler for Address space */ 201 202 struct acpi_object_notify_common { /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */ 203 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO}; 204 205 struct acpi_object_device { 206 ACPI_OBJECT_COMMON_HEADER 207 ACPI_COMMON_NOTIFY_INFO struct acpi_gpe_block_info *gpe_block; 208 }; 209 210 struct acpi_object_power_resource { 211 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO u32 system_level; 212 u32 resource_order; 213 }; 214 215 struct acpi_object_processor { 216 ACPI_OBJECT_COMMON_HEADER 217 /* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */ 218 u8 proc_id; 219 u8 length; 220 ACPI_COMMON_NOTIFY_INFO acpi_io_address address; 221 }; 222 223 struct acpi_object_thermal_zone { 224 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO}; 225 226 /****************************************************************************** 227 * 228 * Fields. All share a common header/info field. 229 * 230 *****************************************************************************/ 231 232 /* 233 * Common bitfield for the field objects 234 * "Field Datum" -- a datum from the actual field object 235 * "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field 236 */ 237 #define ACPI_COMMON_FIELD_INFO \ 238 u8 field_flags; /* Access, update, and lock bits */\ 239 u8 attribute; /* From access_as keyword */\ 240 u8 access_byte_width; /* Read/Write size in bytes */\ 241 struct acpi_namespace_node *node; /* Link back to parent node */\ 242 u32 bit_length; /* Length of field in bits */\ 243 u32 base_byte_offset; /* Byte offset within containing object */\ 244 u32 value; /* Value to store into the Bank or Index register */\ 245 u8 start_field_bit_offset;/* Bit offset within first field datum (0-63) */\ 246 u8 access_bit_width; /* Read/Write size in bits (8-64) */ 247 248 struct acpi_object_field_common { /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */ 249 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Parent Operation Region object (REGION/BANK fields only) */ 250 }; 251 252 struct acpi_object_region_field { 253 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */ 254 }; 255 256 struct acpi_object_bank_field { 257 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */ 258 union acpi_operand_object *bank_obj; /* bank_select Register object */ 259 }; 260 261 struct acpi_object_index_field { 262 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO 263 /* 264 * No "RegionObj" pointer needed since the Index and Data registers 265 * are each field definitions unto themselves. 266 */ 267 union acpi_operand_object *index_obj; /* Index register */ 268 union acpi_operand_object *data_obj; /* Data register */ 269 }; 270 271 /* The buffer_field is different in that it is part of a Buffer, not an op_region */ 272 273 struct acpi_object_buffer_field { 274 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *buffer_obj; /* Containing Buffer object */ 275 }; 276 277 /****************************************************************************** 278 * 279 * Objects for handlers 280 * 281 *****************************************************************************/ 282 283 struct acpi_object_notify_handler { 284 ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Parent device */ 285 acpi_notify_handler handler; 286 void *context; 287 }; 288 289 struct acpi_object_addr_handler { 290 ACPI_OBJECT_COMMON_HEADER u8 space_id; 291 u8 handler_flags; 292 acpi_adr_space_handler handler; 293 struct acpi_namespace_node *node; /* Parent device */ 294 void *context; 295 acpi_adr_space_setup setup; 296 union acpi_operand_object *region_list; /* regions using this handler */ 297 union acpi_operand_object *next; 298 }; 299 300 /* Flags for address handler (handler_flags) */ 301 302 #define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED 0x01 303 304 /****************************************************************************** 305 * 306 * Special internal objects 307 * 308 *****************************************************************************/ 309 310 /* 311 * The Reference object is used for these opcodes: 312 * Arg[0-6], Local[0-7], index_op, name_op, ref_of_op, load_op, load_table_op, debug_op 313 * The Reference.Class differentiates these types. 314 */ 315 struct acpi_object_reference { 316 ACPI_OBJECT_COMMON_HEADER u8 class; /* Reference Class */ 317 u8 target_type; /* Used for Index Op */ 318 u8 reserved; 319 void *object; /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object */ 320 struct acpi_namespace_node *node; /* ref_of or Namepath */ 321 union acpi_operand_object **where; /* Target of Index */ 322 u32 value; /* Used for Local/Arg/Index/ddb_handle */ 323 }; 324 325 /* Values for Reference.Class above */ 326 327 typedef enum { 328 ACPI_REFCLASS_LOCAL = 0, /* Method local */ 329 ACPI_REFCLASS_ARG = 1, /* Method argument */ 330 ACPI_REFCLASS_REFOF = 2, /* Result of ref_of() TBD: Split to Ref/Node and Ref/operand_obj? */ 331 ACPI_REFCLASS_INDEX = 3, /* Result of Index() */ 332 ACPI_REFCLASS_TABLE = 4, /* ddb_handle - Load(), load_table() */ 333 ACPI_REFCLASS_NAME = 5, /* Reference to a named object */ 334 ACPI_REFCLASS_DEBUG = 6, /* Debug object */ 335 336 ACPI_REFCLASS_MAX = 6 337 } ACPI_REFERENCE_CLASSES; 338 339 /* 340 * Extra object is used as additional storage for types that 341 * have AML code in their declarations (term_args) that must be 342 * evaluated at run time. 343 * 344 * Currently: Region and field_unit types 345 */ 346 struct acpi_object_extra { 347 ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *method_REG; /* _REG method for this region (if any) */ 348 void *region_context; /* Region-specific data */ 349 u8 *aml_start; 350 u32 aml_length; 351 }; 352 353 /* Additional data that can be attached to namespace nodes */ 354 355 struct acpi_object_data { 356 ACPI_OBJECT_COMMON_HEADER acpi_object_handler handler; 357 void *pointer; 358 }; 359 360 /* Structure used when objects are cached for reuse */ 361 362 struct acpi_object_cache_list { 363 ACPI_OBJECT_COMMON_HEADER union acpi_operand_object *next; /* Link for object cache and internal lists */ 364 }; 365 366 /****************************************************************************** 367 * 368 * union acpi_operand_object Descriptor - a giant union of all of the above 369 * 370 *****************************************************************************/ 371 372 union acpi_operand_object { 373 struct acpi_object_common common; 374 struct acpi_object_integer integer; 375 struct acpi_object_string string; 376 struct acpi_object_buffer buffer; 377 struct acpi_object_package package; 378 struct acpi_object_event event; 379 struct acpi_object_method method; 380 struct acpi_object_mutex mutex; 381 struct acpi_object_region region; 382 struct acpi_object_notify_common common_notify; 383 struct acpi_object_device device; 384 struct acpi_object_power_resource power_resource; 385 struct acpi_object_processor processor; 386 struct acpi_object_thermal_zone thermal_zone; 387 struct acpi_object_field_common common_field; 388 struct acpi_object_region_field field; 389 struct acpi_object_buffer_field buffer_field; 390 struct acpi_object_bank_field bank_field; 391 struct acpi_object_index_field index_field; 392 struct acpi_object_notify_handler notify; 393 struct acpi_object_addr_handler address_space; 394 struct acpi_object_reference reference; 395 struct acpi_object_extra extra; 396 struct acpi_object_data data; 397 struct acpi_object_cache_list cache; 398 399 /* 400 * Add namespace node to union in order to simplify code that accepts both 401 * ACPI_OPERAND_OBJECTs and ACPI_NAMESPACE_NODEs. The structures share 402 * a common descriptor_type field in order to differentiate them. 403 */ 404 struct acpi_namespace_node node; 405 }; 406 407 /****************************************************************************** 408 * 409 * union acpi_descriptor - objects that share a common descriptor identifier 410 * 411 *****************************************************************************/ 412 413 /* Object descriptor types */ 414 415 #define ACPI_DESC_TYPE_CACHED 0x01 /* Used only when object is cached */ 416 #define ACPI_DESC_TYPE_STATE 0x02 417 #define ACPI_DESC_TYPE_STATE_UPDATE 0x03 418 #define ACPI_DESC_TYPE_STATE_PACKAGE 0x04 419 #define ACPI_DESC_TYPE_STATE_CONTROL 0x05 420 #define ACPI_DESC_TYPE_STATE_RPSCOPE 0x06 421 #define ACPI_DESC_TYPE_STATE_PSCOPE 0x07 422 #define ACPI_DESC_TYPE_STATE_WSCOPE 0x08 423 #define ACPI_DESC_TYPE_STATE_RESULT 0x09 424 #define ACPI_DESC_TYPE_STATE_NOTIFY 0x0A 425 #define ACPI_DESC_TYPE_STATE_THREAD 0x0B 426 #define ACPI_DESC_TYPE_WALK 0x0C 427 #define ACPI_DESC_TYPE_PARSER 0x0D 428 #define ACPI_DESC_TYPE_OPERAND 0x0E 429 #define ACPI_DESC_TYPE_NAMED 0x0F 430 #define ACPI_DESC_TYPE_MAX 0x0F 431 432 struct acpi_common_descriptor { 433 void *common_pointer; 434 u8 descriptor_type; /* To differentiate various internal objs */ 435 }; 436 437 union acpi_descriptor { 438 struct acpi_common_descriptor common; 439 union acpi_operand_object object; 440 struct acpi_namespace_node node; 441 union acpi_parse_object op; 442 }; 443 444 #pragma pack() 445 446 #endif /* _ACOBJECT_H */ 447