1 /****************************************************************************** 2 * 3 * Name: acobject.h - Definition of union acpi_operand_object (Internal object only) 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2012, Intel Corp. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions, and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * substantially similar to the "NO WARRANTY" disclaimer below 19 * ("Disclaimer") and any redistribution must be conditioned upon 20 * including a substantially similar Disclaimer requirement for further 21 * binary redistribution. 22 * 3. Neither the names of the above-listed copyright holders nor the names 23 * of any contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * Alternatively, this software may be distributed under the terms of the 27 * GNU General Public License ("GPL") version 2 as published by the Free 28 * Software Foundation. 29 * 30 * NO WARRANTY 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGES. 42 */ 43 44 #ifndef _ACOBJECT_H 45 #define _ACOBJECT_H 46 47 /* acpisrc:struct_defs -- for acpisrc conversion */ 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 * Note: The object is optimized to be aligned and will not work if it is 56 * byte-packed. 57 */ 58 #if ACPI_MACHINE_WIDTH == 64 59 #pragma pack(8) 60 #else 61 #pragma pack(4) 62 #endif 63 64 /******************************************************************************* 65 * 66 * Common Descriptors 67 * 68 ******************************************************************************/ 69 70 /* 71 * Common area for all objects. 72 * 73 * descriptor_type is used to differentiate between internal descriptors, and 74 * must be in the same place across all descriptors 75 * 76 * Note: The descriptor_type and Type fields must appear in the identical 77 * position in both the struct acpi_namespace_node and union acpi_operand_object 78 * structures. 79 */ 80 #define ACPI_OBJECT_COMMON_HEADER \ 81 union acpi_operand_object *next_object; /* Objects linked to parent NS node */\ 82 u8 descriptor_type; /* To differentiate various internal objs */\ 83 u8 type; /* acpi_object_type */\ 84 u16 reference_count; /* For object deletion management */\ 85 u8 flags; 86 /* 87 * Note: There are 3 bytes available here before the 88 * next natural alignment boundary (for both 32/64 cases) 89 */ 90 91 /* Values for Flag byte above */ 92 93 #define AOPOBJ_AML_CONSTANT 0x01 /* Integer is an AML constant */ 94 #define AOPOBJ_STATIC_POINTER 0x02 /* Data is part of an ACPI table, don't delete */ 95 #define AOPOBJ_DATA_VALID 0x04 /* Object is initialized and data is valid */ 96 #define AOPOBJ_OBJECT_INITIALIZED 0x08 /* Region is initialized, _REG was run */ 97 #define AOPOBJ_SETUP_COMPLETE 0x10 /* Region setup is complete */ 98 #define AOPOBJ_INVALID 0x20 /* Host OS won't allow a Region address */ 99 100 /****************************************************************************** 101 * 102 * Basic data types 103 * 104 *****************************************************************************/ 105 106 struct acpi_object_common { 107 ACPI_OBJECT_COMMON_HEADER}; 108 109 struct acpi_object_integer { 110 ACPI_OBJECT_COMMON_HEADER u8 fill[3]; /* Prevent warning on some compilers */ 111 u64 value; 112 }; 113 114 /* 115 * Note: The String and Buffer object must be identical through the 116 * pointer and length elements. There is code that depends on this. 117 * 118 * Fields common to both Strings and Buffers 119 */ 120 #define ACPI_COMMON_BUFFER_INFO(_type) \ 121 _type *pointer; \ 122 u32 length; 123 124 struct acpi_object_string { /* Null terminated, ASCII characters only */ 125 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(char) /* String in AML stream or allocated string */ 126 }; 127 128 struct acpi_object_buffer { 129 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(u8) /* Buffer in AML stream or allocated buffer */ 130 u32 aml_length; 131 u8 *aml_start; 132 struct acpi_namespace_node *node; /* Link back to parent node */ 133 }; 134 135 struct acpi_object_package { 136 ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Link back to parent node */ 137 union acpi_operand_object **elements; /* Array of pointers to acpi_objects */ 138 u8 *aml_start; 139 u32 aml_length; 140 u32 count; /* # of elements in package */ 141 }; 142 143 /****************************************************************************** 144 * 145 * Complex data types 146 * 147 *****************************************************************************/ 148 149 struct acpi_object_event { 150 ACPI_OBJECT_COMMON_HEADER acpi_semaphore os_semaphore; /* Actual OS synchronization object */ 151 }; 152 153 struct acpi_object_mutex { 154 ACPI_OBJECT_COMMON_HEADER u8 sync_level; /* 0-15, specified in Mutex() call */ 155 u16 acquisition_depth; /* Allow multiple Acquires, same thread */ 156 acpi_mutex os_mutex; /* Actual OS synchronization object */ 157 acpi_thread_id thread_id; /* Current owner of the mutex */ 158 struct acpi_thread_state *owner_thread; /* Current owner of the mutex */ 159 union acpi_operand_object *prev; /* Link for list of acquired mutexes */ 160 union acpi_operand_object *next; /* Link for list of acquired mutexes */ 161 struct acpi_namespace_node *node; /* Containing namespace node */ 162 u8 original_sync_level; /* Owner's original sync level (0-15) */ 163 }; 164 165 struct acpi_object_region { 166 ACPI_OBJECT_COMMON_HEADER u8 space_id; 167 struct acpi_namespace_node *node; /* Containing namespace node */ 168 union acpi_operand_object *handler; /* Handler for region access */ 169 union acpi_operand_object *next; 170 acpi_physical_address address; 171 u32 length; 172 }; 173 174 struct acpi_object_method { 175 ACPI_OBJECT_COMMON_HEADER u8 info_flags; 176 u8 param_count; 177 u8 sync_level; 178 union acpi_operand_object *mutex; 179 u8 *aml_start; 180 union { 181 acpi_internal_method implementation; 182 union acpi_operand_object *handler; 183 } dispatch; 184 185 u32 aml_length; 186 u8 thread_count; 187 acpi_owner_id owner_id; 188 }; 189 190 /* Flags for info_flags field above */ 191 192 #define ACPI_METHOD_MODULE_LEVEL 0x01 /* Method is actually module-level code */ 193 #define ACPI_METHOD_INTERNAL_ONLY 0x02 /* Method is implemented internally (_OSI) */ 194 #define ACPI_METHOD_SERIALIZED 0x04 /* Method is serialized */ 195 #define ACPI_METHOD_SERIALIZED_PENDING 0x08 /* Method is to be marked serialized */ 196 #define ACPI_METHOD_MODIFIED_NAMESPACE 0x10 /* Method modified the namespace */ 197 198 /****************************************************************************** 199 * 200 * Objects that can be notified. All share a common notify_info area. 201 * 202 *****************************************************************************/ 203 204 /* 205 * Common fields for objects that support ASL notifications 206 */ 207 #define ACPI_COMMON_NOTIFY_INFO \ 208 union acpi_operand_object *notify_list[2]; /* Handlers for system/device notifies */\ 209 union acpi_operand_object *handler; /* Handler for Address space */ 210 211 struct acpi_object_notify_common { /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */ 212 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO}; 213 214 struct acpi_object_device { 215 ACPI_OBJECT_COMMON_HEADER 216 ACPI_COMMON_NOTIFY_INFO struct acpi_gpe_block_info *gpe_block; 217 }; 218 219 struct acpi_object_power_resource { 220 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO u32 system_level; 221 u32 resource_order; 222 }; 223 224 struct acpi_object_processor { 225 ACPI_OBJECT_COMMON_HEADER 226 /* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */ 227 u8 proc_id; 228 u8 length; 229 ACPI_COMMON_NOTIFY_INFO acpi_io_address address; 230 }; 231 232 struct acpi_object_thermal_zone { 233 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO}; 234 235 /****************************************************************************** 236 * 237 * Fields. All share a common header/info field. 238 * 239 *****************************************************************************/ 240 241 /* 242 * Common bitfield for the field objects 243 * "Field Datum" -- a datum from the actual field object 244 * "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field 245 */ 246 #define ACPI_COMMON_FIELD_INFO \ 247 u8 field_flags; /* Access, update, and lock bits */\ 248 u8 attribute; /* From access_as keyword */\ 249 u8 access_byte_width; /* Read/Write size in bytes */\ 250 struct acpi_namespace_node *node; /* Link back to parent node */\ 251 u32 bit_length; /* Length of field in bits */\ 252 u32 base_byte_offset; /* Byte offset within containing object */\ 253 u32 value; /* Value to store into the Bank or Index register */\ 254 u8 start_field_bit_offset;/* Bit offset within first field datum (0-63) */\ 255 u8 access_length; /* For serial regions/fields */ 256 257 258 struct acpi_object_field_common { /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */ 259 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Parent Operation Region object (REGION/BANK fields only) */ 260 }; 261 262 struct acpi_object_region_field { 263 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO u16 resource_length; 264 union acpi_operand_object *region_obj; /* Containing op_region object */ 265 u8 *resource_buffer; /* resource_template for serial regions/fields */ 266 }; 267 268 struct acpi_object_bank_field { 269 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */ 270 union acpi_operand_object *bank_obj; /* bank_select Register object */ 271 }; 272 273 struct acpi_object_index_field { 274 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO 275 /* 276 * No "RegionObj" pointer needed since the Index and Data registers 277 * are each field definitions unto themselves. 278 */ 279 union acpi_operand_object *index_obj; /* Index register */ 280 union acpi_operand_object *data_obj; /* Data register */ 281 }; 282 283 /* The buffer_field is different in that it is part of a Buffer, not an op_region */ 284 285 struct acpi_object_buffer_field { 286 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *buffer_obj; /* Containing Buffer object */ 287 }; 288 289 /****************************************************************************** 290 * 291 * Objects for handlers 292 * 293 *****************************************************************************/ 294 295 struct acpi_object_notify_handler { 296 ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Parent device */ 297 u32 handler_type; /* Type: Device/System/Both */ 298 acpi_notify_handler handler; /* Handler address */ 299 void *context; 300 union acpi_operand_object *next[2]; /* Device and System handler lists */ 301 }; 302 303 struct acpi_object_addr_handler { 304 ACPI_OBJECT_COMMON_HEADER u8 space_id; 305 u8 handler_flags; 306 acpi_adr_space_handler handler; 307 struct acpi_namespace_node *node; /* Parent device */ 308 void *context; 309 acpi_adr_space_setup setup; 310 union acpi_operand_object *region_list; /* regions using this handler */ 311 union acpi_operand_object *next; 312 }; 313 314 /* Flags for address handler (handler_flags) */ 315 316 #define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED 0x01 317 318 /****************************************************************************** 319 * 320 * Special internal objects 321 * 322 *****************************************************************************/ 323 324 /* 325 * The Reference object is used for these opcodes: 326 * Arg[0-6], Local[0-7], index_op, name_op, ref_of_op, load_op, load_table_op, debug_op 327 * The Reference.Class differentiates these types. 328 */ 329 struct acpi_object_reference { 330 ACPI_OBJECT_COMMON_HEADER u8 class; /* Reference Class */ 331 u8 target_type; /* Used for Index Op */ 332 u8 reserved; 333 void *object; /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object */ 334 struct acpi_namespace_node *node; /* ref_of or Namepath */ 335 union acpi_operand_object **where; /* Target of Index */ 336 u32 value; /* Used for Local/Arg/Index/ddb_handle */ 337 }; 338 339 /* Values for Reference.Class above */ 340 341 typedef enum { 342 ACPI_REFCLASS_LOCAL = 0, /* Method local */ 343 ACPI_REFCLASS_ARG = 1, /* Method argument */ 344 ACPI_REFCLASS_REFOF = 2, /* Result of ref_of() TBD: Split to Ref/Node and Ref/operand_obj? */ 345 ACPI_REFCLASS_INDEX = 3, /* Result of Index() */ 346 ACPI_REFCLASS_TABLE = 4, /* ddb_handle - Load(), load_table() */ 347 ACPI_REFCLASS_NAME = 5, /* Reference to a named object */ 348 ACPI_REFCLASS_DEBUG = 6, /* Debug object */ 349 350 ACPI_REFCLASS_MAX = 6 351 } ACPI_REFERENCE_CLASSES; 352 353 /* 354 * Extra object is used as additional storage for types that 355 * have AML code in their declarations (term_args) that must be 356 * evaluated at run time. 357 * 358 * Currently: Region and field_unit types 359 */ 360 struct acpi_object_extra { 361 ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *method_REG; /* _REG method for this region (if any) */ 362 struct acpi_namespace_node *scope_node; 363 void *region_context; /* Region-specific data */ 364 u8 *aml_start; 365 u32 aml_length; 366 }; 367 368 /* Additional data that can be attached to namespace nodes */ 369 370 struct acpi_object_data { 371 ACPI_OBJECT_COMMON_HEADER acpi_object_handler handler; 372 void *pointer; 373 }; 374 375 /* Structure used when objects are cached for reuse */ 376 377 struct acpi_object_cache_list { 378 ACPI_OBJECT_COMMON_HEADER union acpi_operand_object *next; /* Link for object cache and internal lists */ 379 }; 380 381 /****************************************************************************** 382 * 383 * union acpi_operand_object descriptor - a giant union of all of the above 384 * 385 *****************************************************************************/ 386 387 union acpi_operand_object { 388 struct acpi_object_common common; 389 struct acpi_object_integer integer; 390 struct acpi_object_string string; 391 struct acpi_object_buffer buffer; 392 struct acpi_object_package package; 393 struct acpi_object_event event; 394 struct acpi_object_method method; 395 struct acpi_object_mutex mutex; 396 struct acpi_object_region region; 397 struct acpi_object_notify_common common_notify; 398 struct acpi_object_device device; 399 struct acpi_object_power_resource power_resource; 400 struct acpi_object_processor processor; 401 struct acpi_object_thermal_zone thermal_zone; 402 struct acpi_object_field_common common_field; 403 struct acpi_object_region_field field; 404 struct acpi_object_buffer_field buffer_field; 405 struct acpi_object_bank_field bank_field; 406 struct acpi_object_index_field index_field; 407 struct acpi_object_notify_handler notify; 408 struct acpi_object_addr_handler address_space; 409 struct acpi_object_reference reference; 410 struct acpi_object_extra extra; 411 struct acpi_object_data data; 412 struct acpi_object_cache_list cache; 413 414 /* 415 * Add namespace node to union in order to simplify code that accepts both 416 * ACPI_OPERAND_OBJECTs and ACPI_NAMESPACE_NODEs. The structures share 417 * a common descriptor_type field in order to differentiate them. 418 */ 419 struct acpi_namespace_node node; 420 }; 421 422 /****************************************************************************** 423 * 424 * union acpi_descriptor - objects that share a common descriptor identifier 425 * 426 *****************************************************************************/ 427 428 /* Object descriptor types */ 429 430 #define ACPI_DESC_TYPE_CACHED 0x01 /* Used only when object is cached */ 431 #define ACPI_DESC_TYPE_STATE 0x02 432 #define ACPI_DESC_TYPE_STATE_UPDATE 0x03 433 #define ACPI_DESC_TYPE_STATE_PACKAGE 0x04 434 #define ACPI_DESC_TYPE_STATE_CONTROL 0x05 435 #define ACPI_DESC_TYPE_STATE_RPSCOPE 0x06 436 #define ACPI_DESC_TYPE_STATE_PSCOPE 0x07 437 #define ACPI_DESC_TYPE_STATE_WSCOPE 0x08 438 #define ACPI_DESC_TYPE_STATE_RESULT 0x09 439 #define ACPI_DESC_TYPE_STATE_NOTIFY 0x0A 440 #define ACPI_DESC_TYPE_STATE_THREAD 0x0B 441 #define ACPI_DESC_TYPE_WALK 0x0C 442 #define ACPI_DESC_TYPE_PARSER 0x0D 443 #define ACPI_DESC_TYPE_OPERAND 0x0E 444 #define ACPI_DESC_TYPE_NAMED 0x0F 445 #define ACPI_DESC_TYPE_MAX 0x0F 446 447 struct acpi_common_descriptor { 448 void *common_pointer; 449 u8 descriptor_type; /* To differentiate various internal objs */ 450 }; 451 452 union acpi_descriptor { 453 struct acpi_common_descriptor common; 454 union acpi_operand_object object; 455 struct acpi_namespace_node node; 456 union acpi_parse_object op; 457 }; 458 459 #pragma pack() 460 461 #endif /* _ACOBJECT_H */ 462