1 2/****************************************************************************** 3 * 4 * Name: acobject.h - Definition of union acpi_operand_object (Internal object only) 5 * 6 *****************************************************************************/ 7 8/* 9 * Copyright (C) 2000 - 2012, 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 /* Integer is an AML constant */ 95#define AOPOBJ_STATIC_POINTER 0x02 /* Data is part of an ACPI table, don't delete */ 96#define AOPOBJ_DATA_VALID 0x04 /* Object is initialized and data is valid */ 97#define AOPOBJ_OBJECT_INITIALIZED 0x08 /* Region is initialized, _REG was run */ 98#define AOPOBJ_SETUP_COMPLETE 0x10 /* Region setup is complete */ 99#define AOPOBJ_INVALID 0x20 /* Host OS won't allow a Region address */ 100 101/****************************************************************************** 102 * 103 * Basic data types 104 * 105 *****************************************************************************/ 106 107struct acpi_object_common { 108ACPI_OBJECT_COMMON_HEADER}; 109 110struct acpi_object_integer { 111 ACPI_OBJECT_COMMON_HEADER u8 fill[3]; /* Prevent warning on some compilers */ 112 u64 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 125struct 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 129struct 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 136struct 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 150struct acpi_object_event { 151 ACPI_OBJECT_COMMON_HEADER acpi_semaphore os_semaphore; /* Actual OS synchronization object */ 152}; 153 154struct 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 166struct 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 175struct acpi_object_method { 176 ACPI_OBJECT_COMMON_HEADER u8 info_flags; 177 u8 param_count; 178 u8 sync_level; 179 union acpi_operand_object *mutex; 180 u8 *aml_start; 181 union { 182 ACPI_INTERNAL_METHOD implementation; 183 union acpi_operand_object *handler; 184 } dispatch; 185 186 u32 aml_length; 187 u8 thread_count; 188 acpi_owner_id owner_id; 189}; 190 191/* Flags for info_flags field above */ 192 193#define ACPI_METHOD_MODULE_LEVEL 0x01 /* Method is actually module-level code */ 194#define ACPI_METHOD_INTERNAL_ONLY 0x02 /* Method is implemented internally (_OSI) */ 195#define ACPI_METHOD_SERIALIZED 0x04 /* Method is serialized */ 196#define ACPI_METHOD_SERIALIZED_PENDING 0x08 /* Method is to be marked serialized */ 197#define ACPI_METHOD_MODIFIED_NAMESPACE 0x10 /* Method modified the namespace */ 198 199/****************************************************************************** 200 * 201 * Objects that can be notified. All share a common notify_info area. 202 * 203 *****************************************************************************/ 204 205/* 206 * Common fields for objects that support ASL notifications 207 */ 208#define ACPI_COMMON_NOTIFY_INFO \ 209 union acpi_operand_object *system_notify; /* Handler for system notifies */\ 210 union acpi_operand_object *device_notify; /* Handler for driver notifies */\ 211 union acpi_operand_object *handler; /* Handler for Address space */ 212 213struct acpi_object_notify_common { /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */ 214ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO}; 215 216struct acpi_object_device { 217 ACPI_OBJECT_COMMON_HEADER 218 ACPI_COMMON_NOTIFY_INFO struct acpi_gpe_block_info *gpe_block; 219}; 220 221struct acpi_object_power_resource { 222 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO u32 system_level; 223 u32 resource_order; 224}; 225 226struct acpi_object_processor { 227 ACPI_OBJECT_COMMON_HEADER 228 /* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */ 229 u8 proc_id; 230 u8 length; 231 ACPI_COMMON_NOTIFY_INFO acpi_io_address address; 232}; 233 234struct acpi_object_thermal_zone { 235ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO}; 236 237/****************************************************************************** 238 * 239 * Fields. All share a common header/info field. 240 * 241 *****************************************************************************/ 242 243/* 244 * Common bitfield for the field objects 245 * "Field Datum" -- a datum from the actual field object 246 * "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field 247 */ 248#define ACPI_COMMON_FIELD_INFO \ 249 u8 field_flags; /* Access, update, and lock bits */\ 250 u8 attribute; /* From access_as keyword */\ 251 u8 access_byte_width; /* Read/Write size in bytes */\ 252 struct acpi_namespace_node *node; /* Link back to parent node */\ 253 u32 bit_length; /* Length of field in bits */\ 254 u32 base_byte_offset; /* Byte offset within containing object */\ 255 u32 value; /* Value to store into the Bank or Index register */\ 256 u8 start_field_bit_offset;/* Bit offset within first field datum (0-63) */\ 257 u8 access_length; /* For serial regions/fields */ 258 259 260struct acpi_object_field_common { /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */ 261 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Parent Operation Region object (REGION/BANK fields only) */ 262}; 263 264struct acpi_object_region_field { 265 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO u16 resource_length; 266 union acpi_operand_object *region_obj; /* Containing op_region object */ 267 u8 *resource_buffer; /* resource_template for serial regions/fields */ 268}; 269 270struct acpi_object_bank_field { 271 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */ 272 union acpi_operand_object *bank_obj; /* bank_select Register object */ 273}; 274 275struct acpi_object_index_field { 276 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO 277 /* 278 * No "RegionObj" pointer needed since the Index and Data registers 279 * are each field definitions unto themselves. 280 */ 281 union acpi_operand_object *index_obj; /* Index register */ 282 union acpi_operand_object *data_obj; /* Data register */ 283}; 284 285/* The buffer_field is different in that it is part of a Buffer, not an op_region */ 286 287struct acpi_object_buffer_field { 288 ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *buffer_obj; /* Containing Buffer object */ 289}; 290 291/****************************************************************************** 292 * 293 * Objects for handlers 294 * 295 *****************************************************************************/ 296 297struct acpi_object_notify_handler { 298 ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Parent device */ 299 u32 handler_type; 300 acpi_notify_handler handler; 301 void *context; 302 struct acpi_object_notify_handler *next; 303}; 304 305struct acpi_object_addr_handler { 306 ACPI_OBJECT_COMMON_HEADER u8 space_id; 307 u8 handler_flags; 308 acpi_adr_space_handler handler; 309 struct acpi_namespace_node *node; /* Parent device */ 310 void *context; 311 acpi_adr_space_setup setup; 312 union acpi_operand_object *region_list; /* regions using this handler */ 313 union acpi_operand_object *next; 314}; 315 316/* Flags for address handler (handler_flags) */ 317 318#define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED 0x01 319 320/****************************************************************************** 321 * 322 * Special internal objects 323 * 324 *****************************************************************************/ 325 326/* 327 * The Reference object is used for these opcodes: 328 * Arg[0-6], Local[0-7], index_op, name_op, ref_of_op, load_op, load_table_op, debug_op 329 * The Reference.Class differentiates these types. 330 */ 331struct acpi_object_reference { 332 ACPI_OBJECT_COMMON_HEADER u8 class; /* Reference Class */ 333 u8 target_type; /* Used for Index Op */ 334 u8 reserved; 335 void *object; /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object */ 336 struct acpi_namespace_node *node; /* ref_of or Namepath */ 337 union acpi_operand_object **where; /* Target of Index */ 338 u32 value; /* Used for Local/Arg/Index/ddb_handle */ 339}; 340 341/* Values for Reference.Class above */ 342 343typedef enum { 344 ACPI_REFCLASS_LOCAL = 0, /* Method local */ 345 ACPI_REFCLASS_ARG = 1, /* Method argument */ 346 ACPI_REFCLASS_REFOF = 2, /* Result of ref_of() TBD: Split to Ref/Node and Ref/operand_obj? */ 347 ACPI_REFCLASS_INDEX = 3, /* Result of Index() */ 348 ACPI_REFCLASS_TABLE = 4, /* ddb_handle - Load(), load_table() */ 349 ACPI_REFCLASS_NAME = 5, /* Reference to a named object */ 350 ACPI_REFCLASS_DEBUG = 6, /* Debug object */ 351 352 ACPI_REFCLASS_MAX = 6 353} ACPI_REFERENCE_CLASSES; 354 355/* 356 * Extra object is used as additional storage for types that 357 * have AML code in their declarations (term_args) that must be 358 * evaluated at run time. 359 * 360 * Currently: Region and field_unit types 361 */ 362struct acpi_object_extra { 363 ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *method_REG; /* _REG method for this region (if any) */ 364 struct acpi_namespace_node *scope_node; 365 void *region_context; /* Region-specific data */ 366 u8 *aml_start; 367 u32 aml_length; 368}; 369 370/* Additional data that can be attached to namespace nodes */ 371 372struct acpi_object_data { 373 ACPI_OBJECT_COMMON_HEADER acpi_object_handler handler; 374 void *pointer; 375}; 376 377/* Structure used when objects are cached for reuse */ 378 379struct acpi_object_cache_list { 380 ACPI_OBJECT_COMMON_HEADER union acpi_operand_object *next; /* Link for object cache and internal lists */ 381}; 382 383/****************************************************************************** 384 * 385 * union acpi_operand_object Descriptor - a giant union of all of the above 386 * 387 *****************************************************************************/ 388 389union acpi_operand_object { 390 struct acpi_object_common common; 391 struct acpi_object_integer integer; 392 struct acpi_object_string string; 393 struct acpi_object_buffer buffer; 394 struct acpi_object_package package; 395 struct acpi_object_event event; 396 struct acpi_object_method method; 397 struct acpi_object_mutex mutex; 398 struct acpi_object_region region; 399 struct acpi_object_notify_common common_notify; 400 struct acpi_object_device device; 401 struct acpi_object_power_resource power_resource; 402 struct acpi_object_processor processor; 403 struct acpi_object_thermal_zone thermal_zone; 404 struct acpi_object_field_common common_field; 405 struct acpi_object_region_field field; 406 struct acpi_object_buffer_field buffer_field; 407 struct acpi_object_bank_field bank_field; 408 struct acpi_object_index_field index_field; 409 struct acpi_object_notify_handler notify; 410 struct acpi_object_addr_handler address_space; 411 struct acpi_object_reference reference; 412 struct acpi_object_extra extra; 413 struct acpi_object_data data; 414 struct acpi_object_cache_list cache; 415 416 /* 417 * Add namespace node to union in order to simplify code that accepts both 418 * ACPI_OPERAND_OBJECTs and ACPI_NAMESPACE_NODEs. The structures share 419 * a common descriptor_type field in order to differentiate them. 420 */ 421 struct acpi_namespace_node node; 422}; 423 424/****************************************************************************** 425 * 426 * union acpi_descriptor - objects that share a common descriptor identifier 427 * 428 *****************************************************************************/ 429 430/* Object descriptor types */ 431 432#define ACPI_DESC_TYPE_CACHED 0x01 /* Used only when object is cached */ 433#define ACPI_DESC_TYPE_STATE 0x02 434#define ACPI_DESC_TYPE_STATE_UPDATE 0x03 435#define ACPI_DESC_TYPE_STATE_PACKAGE 0x04 436#define ACPI_DESC_TYPE_STATE_CONTROL 0x05 437#define ACPI_DESC_TYPE_STATE_RPSCOPE 0x06 438#define ACPI_DESC_TYPE_STATE_PSCOPE 0x07 439#define ACPI_DESC_TYPE_STATE_WSCOPE 0x08 440#define ACPI_DESC_TYPE_STATE_RESULT 0x09 441#define ACPI_DESC_TYPE_STATE_NOTIFY 0x0A 442#define ACPI_DESC_TYPE_STATE_THREAD 0x0B 443#define ACPI_DESC_TYPE_WALK 0x0C 444#define ACPI_DESC_TYPE_PARSER 0x0D 445#define ACPI_DESC_TYPE_OPERAND 0x0E 446#define ACPI_DESC_TYPE_NAMED 0x0F 447#define ACPI_DESC_TYPE_MAX 0x0F 448 449struct acpi_common_descriptor { 450 void *common_pointer; 451 u8 descriptor_type; /* To differentiate various internal objs */ 452}; 453 454union acpi_descriptor { 455 struct acpi_common_descriptor common; 456 union acpi_operand_object object; 457 struct acpi_namespace_node node; 458 union acpi_parse_object op; 459}; 460 461#pragma pack() 462 463#endif /* _ACOBJECT_H */ 464