drivers/acpi/acpica/acglobal.h

   1 /******************************************************************************
   2  *
   3  * Name: acglobal.h - Declarations for global variables
   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 __ACGLOBAL_H__
  45 #define __ACGLOBAL_H__
  46
  47 /*
  48  * Ensure that the globals are actually defined and initialized only once.
  49  *
  50  * The use of these macros allows a single list of globals (here) in order
  51  * to simplify maintenance of the code.
  52  */
  53 #ifdef DEFINE_ACPI_GLOBALS
  54 #define ACPI_EXTERN
  55 #define ACPI_INIT_GLOBAL(a,b) a=b
  56 #else
  57 #define ACPI_EXTERN extern
  58 #define ACPI_INIT_GLOBAL(a,b) a
  59 #endif
  60
  61 #ifdef DEFINE_ACPI_GLOBALS
  62
  63 /* Public globals, available from outside ACPICA subsystem */
  64
  65 /*****************************************************************************
  66  *
  67  * Runtime configuration (static defaults that can be overriden at runtime)
  68  *
  69  ****************************************************************************/
  70
  71 /*
  72  * Enable "slack" in the AML interpreter?  Default is FALSE, and the
  73  * interpreter strictly follows the ACPI specification. Setting to TRUE
  74  * allows the interpreter to ignore certain errors and/or bad AML constructs.
  75  *
  76  * Currently, these features are enabled by this flag:
  77  *
  78  * 1) Allow "implicit return" of last value in a control method
  79  * 2) Allow access beyond the end of an operation region
  80  * 3) Allow access to uninitialized locals/args (auto-init to integer 0)
  81  * 4) Allow ANY object type to be a source operand for the Store() operator
  82  * 5) Allow unresolved references (invalid target name) in package objects
  83  * 6) Enable warning messages for behavior that is not ACPI spec compliant
  84  */
  85 u8 ACPI_INIT_GLOBAL(acpi_gbl_enable_interpreter_slack, FALSE);
  86
  87 /*
  88  * Automatically serialize ALL control methods? Default is FALSE, meaning
  89  * to use the Serialized/not_serialized method flags on a per method basis.
  90  * Only change this if the ASL code is poorly written and cannot handle
  91  * reentrancy even though methods are marked "NotSerialized".
  92  */
  93 u8 ACPI_INIT_GLOBAL(acpi_gbl_all_methods_serialized, FALSE);
  94
  95 /*
  96  * Create the predefined _OSI method in the namespace? Default is TRUE
  97  * because ACPI CA is fully compatible with other ACPI implementations.
  98  * Changing this will revert ACPI CA (and machine ASL) to pre-OSI behavior.
  99  */
 100 u8 ACPI_INIT_GLOBAL(acpi_gbl_create_osi_method, TRUE);
 101
 102 /*
 103  * Optionally use default values for the ACPI register widths. Set this to
 104  * TRUE to use the defaults, if an FADT contains incorrect widths/lengths.
 105  */
 106 u8 ACPI_INIT_GLOBAL(acpi_gbl_use_default_register_widths, TRUE);
 107
 108 /*
 109  * Optionally enable output from the AML Debug Object.
 110  */
 111 bool ACPI_INIT_GLOBAL(acpi_gbl_enable_aml_debug_object, FALSE);
 112
 113 /*
 114  * Optionally copy the entire DSDT to local memory (instead of simply
 115  * mapping it.) There are some BIOSs that corrupt or replace the original
 116  * DSDT, creating the need for this option. Default is FALSE, do not copy
 117  * the DSDT.
 118  */
 119 u8 ACPI_INIT_GLOBAL(acpi_gbl_copy_dsdt_locally, FALSE);
 120
 121 /*
 122  * Optionally truncate I/O addresses to 16 bits. Provides compatibility
 123  * with other ACPI implementations. NOTE: During ACPICA initialization,
 124  * this value is set to TRUE if any Windows OSI strings have been
 125  * requested by the BIOS.
 126  */
 127 u8 ACPI_INIT_GLOBAL(acpi_gbl_truncate_io_addresses, FALSE);
 128
 129 /*
 130  * Disable runtime checking and repair of values returned by control methods.
 131  * Use only if the repair is causing a problem on a particular machine.
 132  */
 133 u8 ACPI_INIT_GLOBAL(acpi_gbl_disable_auto_repair, FALSE);
 134
 135 /* acpi_gbl_FADT is a local copy of the FADT, converted to a common format. */
 136
 137 struct acpi_table_fadt acpi_gbl_FADT;
 138 u32 acpi_current_gpe_count;
 139 u32 acpi_gbl_trace_flags;
 140 acpi_name acpi_gbl_trace_method_name;
 141 u8 acpi_gbl_system_awake_and_running;
 142
 143 /*
 144  * ACPI 5.0 introduces the concept of a "reduced hardware platform", meaning
 145  * that the ACPI hardware is no longer required. A flag in the FADT indicates
 146  * a reduced HW machine, and that flag is duplicated here for convenience.
 147  */
 148 u8 acpi_gbl_reduced_hardware;
 149
 150 #endif                          /* DEFINE_ACPI_GLOBALS */
 151
 152 /* Do not disassemble buffers to resource descriptors */
 153
 154 ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_no_resource_disassembly, FALSE);
 155
 156 /*****************************************************************************
 157  *
 158  * ACPI Table globals
 159  *
 160  ****************************************************************************/
 161
 162 /*
 163  * acpi_gbl_root_table_list is the master list of ACPI tables that were
 164  * found in the RSDT/XSDT.
 165  */
 166 ACPI_EXTERN struct acpi_table_list acpi_gbl_root_table_list;
 167
 168 #if (!ACPI_REDUCED_HARDWARE)
 169 ACPI_EXTERN struct acpi_table_facs *acpi_gbl_FACS;
 170
 171 #endif                          /* !ACPI_REDUCED_HARDWARE */
 172
 173 /* These addresses are calculated from the FADT Event Block addresses */
 174
 175 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1a_status;
 176 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1a_enable;
 177
 178 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1b_status;
 179 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1b_enable;
 180
 181 /* DSDT information. Used to check for DSDT corruption */
 182
 183 ACPI_EXTERN struct acpi_table_header *acpi_gbl_DSDT;
 184 ACPI_EXTERN struct acpi_table_header acpi_gbl_original_dsdt_header;
 185
 186 /*
 187  * Handle both ACPI 1.0 and ACPI 2.0 Integer widths. The integer width is
 188  * determined by the revision of the DSDT: If the DSDT revision is less than
 189  * 2, use only the lower 32 bits of the internal 64-bit Integer.
 190  */
 191 ACPI_EXTERN u8 acpi_gbl_integer_bit_width;
 192 ACPI_EXTERN u8 acpi_gbl_integer_byte_width;
 193 ACPI_EXTERN u8 acpi_gbl_integer_nybble_width;
 194
 195 /* Mutex for _OSI support */
 196
 197 ACPI_EXTERN acpi_mutex acpi_gbl_osi_mutex;
 198
 199 /* Reader/Writer lock is used for namespace walk and dynamic table unload */
 200
 201 ACPI_EXTERN struct acpi_rw_lock acpi_gbl_namespace_rw_lock;
 202
 203 /*****************************************************************************
 204  *
 205  * Mutual exclusion within ACPICA subsystem
 206  *
 207  ****************************************************************************/
 208
 209 /*
 210  * Predefined mutex objects. This array contains the
 211  * actual OS mutex handles, indexed by the local ACPI_MUTEX_HANDLEs.
 212  * (The table maps local handles to the real OS handles)
 213  */
 214 ACPI_EXTERN struct acpi_mutex_info acpi_gbl_mutex_info[ACPI_NUM_MUTEX];
 215
 216 /*
 217  * Global lock mutex is an actual AML mutex object
 218  * Global lock semaphore works in conjunction with the actual global lock
 219  * Global lock spinlock is used for "pending" handshake
 220  */
 221 ACPI_EXTERN union acpi_operand_object *acpi_gbl_global_lock_mutex;
 222 ACPI_EXTERN acpi_semaphore acpi_gbl_global_lock_semaphore;
 223 ACPI_EXTERN acpi_spinlock acpi_gbl_global_lock_pending_lock;
 224 ACPI_EXTERN u16 acpi_gbl_global_lock_handle;
 225 ACPI_EXTERN u8 acpi_gbl_global_lock_acquired;
 226 ACPI_EXTERN u8 acpi_gbl_global_lock_present;
 227 ACPI_EXTERN u8 acpi_gbl_global_lock_pending;
 228
 229 /*
 230  * Spinlocks are used for interfaces that can be possibly called at
 231  * interrupt level
 232  */
 233 ACPI_EXTERN acpi_spinlock acpi_gbl_gpe_lock;    /* For GPE data structs and registers */
 234 ACPI_EXTERN acpi_spinlock acpi_gbl_hardware_lock;       /* For ACPI H/W except GPE registers */
 235
 236 /*****************************************************************************
 237  *
 238  * Miscellaneous globals
 239  *
 240  ****************************************************************************/
 241
 242 /* Object caches */
 243
 244 ACPI_EXTERN acpi_cache_t *acpi_gbl_namespace_cache;
 245 ACPI_EXTERN acpi_cache_t *acpi_gbl_state_cache;
 246 ACPI_EXTERN acpi_cache_t *acpi_gbl_ps_node_cache;
 247 ACPI_EXTERN acpi_cache_t *acpi_gbl_ps_node_ext_cache;
 248 ACPI_EXTERN acpi_cache_t *acpi_gbl_operand_cache;
 249
 250 /* Global handlers */
 251
 252 ACPI_EXTERN struct acpi_global_notify_handler acpi_gbl_global_notify[2];
 253 ACPI_EXTERN acpi_exception_handler acpi_gbl_exception_handler;
 254 ACPI_EXTERN acpi_init_handler acpi_gbl_init_handler;
 255 ACPI_EXTERN acpi_tbl_handler acpi_gbl_table_handler;
 256 ACPI_EXTERN void *acpi_gbl_table_handler_context;
 257 ACPI_EXTERN struct acpi_walk_state *acpi_gbl_breakpoint_walk;
 258 ACPI_EXTERN acpi_interface_handler acpi_gbl_interface_handler;
 259
 260 /* Owner ID support */
 261
 262 ACPI_EXTERN u32 acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS];
 263 ACPI_EXTERN u8 acpi_gbl_last_owner_id_index;
 264 ACPI_EXTERN u8 acpi_gbl_next_owner_id_offset;
 265
 266 /* Initialization sequencing */
 267
 268 ACPI_EXTERN u8 acpi_gbl_reg_methods_executed;
 269
 270 /* Misc */
 271
 272 ACPI_EXTERN u32 acpi_gbl_original_mode;
 273 ACPI_EXTERN u32 acpi_gbl_rsdp_original_location;
 274 ACPI_EXTERN u32 acpi_gbl_ns_lookup_count;
 275 ACPI_EXTERN u32 acpi_gbl_ps_find_count;
 276 ACPI_EXTERN u16 acpi_gbl_pm1_enable_register_save;
 277 ACPI_EXTERN u8 acpi_gbl_debugger_configuration;
 278 ACPI_EXTERN u8 acpi_gbl_step_to_next_call;
 279 ACPI_EXTERN u8 acpi_gbl_acpi_hardware_present;
 280 ACPI_EXTERN u8 acpi_gbl_events_initialized;
 281 ACPI_EXTERN u8 acpi_gbl_osi_data;
 282 ACPI_EXTERN struct acpi_interface_info *acpi_gbl_supported_interfaces;
 283 ACPI_EXTERN struct acpi_address_range
 284     *acpi_gbl_address_range_list[ACPI_ADDRESS_RANGE_MAX];
 285
 286 #ifndef DEFINE_ACPI_GLOBALS
 287
 288 /* Other miscellaneous */
 289
 290 extern u8 acpi_gbl_shutdown;
 291 extern u32 acpi_gbl_startup_flags;
 292 extern const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT];
 293 extern const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS];
 294 extern const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS];
 295 extern const struct acpi_opcode_info acpi_gbl_aml_op_info[AML_NUM_OPCODES];
 296 extern const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS];
 297
 298 #endif
 299
 300 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 301
 302 /* Lists for tracking memory allocations */
 303
 304 ACPI_EXTERN struct acpi_memory_list *acpi_gbl_global_list;
 305 ACPI_EXTERN struct acpi_memory_list *acpi_gbl_ns_node_list;
 306 ACPI_EXTERN u8 acpi_gbl_display_final_mem_stats;
 307 #endif
 308
 309 /*****************************************************************************
 310  *
 311  * Namespace globals
 312  *
 313  ****************************************************************************/
 314
 315 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
 316 #define NUM_PREDEFINED_NAMES            10
 317 #else
 318 #define NUM_PREDEFINED_NAMES            9
 319 #endif
 320
 321 ACPI_EXTERN struct acpi_namespace_node acpi_gbl_root_node_struct;
 322 ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_root_node;
 323 ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_fadt_gpe_device;
 324 ACPI_EXTERN union acpi_operand_object *acpi_gbl_module_code_list;
 325
 326 extern const u8 acpi_gbl_ns_properties[ACPI_NUM_NS_TYPES];
 327 extern const struct acpi_predefined_names
 328     acpi_gbl_pre_defined_names[NUM_PREDEFINED_NAMES];
 329
 330 #ifdef ACPI_DEBUG_OUTPUT
 331 ACPI_EXTERN u32 acpi_gbl_current_node_count;
 332 ACPI_EXTERN u32 acpi_gbl_current_node_size;
 333 ACPI_EXTERN u32 acpi_gbl_max_concurrent_node_count;
 334 ACPI_EXTERN acpi_size *acpi_gbl_entry_stack_pointer;
 335 ACPI_EXTERN acpi_size *acpi_gbl_lowest_stack_pointer;
 336 ACPI_EXTERN u32 acpi_gbl_deepest_nesting;
 337 #endif
 338
 339 /*****************************************************************************
 340  *
 341  * Interpreter globals
 342  *
 343  ****************************************************************************/
 344
 345 ACPI_EXTERN struct acpi_thread_state *acpi_gbl_current_walk_list;
 346
 347 /* Control method single step flag */
 348
 349 ACPI_EXTERN u8 acpi_gbl_cm_single_step;
 350
 351 /*****************************************************************************
 352  *
 353  * Hardware globals
 354  *
 355  ****************************************************************************/
 356
 357 extern struct acpi_bit_register_info
 358     acpi_gbl_bit_register_info[ACPI_NUM_BITREG];
 359 ACPI_EXTERN u8 acpi_gbl_sleep_type_a;
 360 ACPI_EXTERN u8 acpi_gbl_sleep_type_b;
 361
 362 /*****************************************************************************
 363  *
 364  * Event and GPE globals
 365  *
 366  ****************************************************************************/
 367
 368 extern struct acpi_fixed_event_info
 369     acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS];
 370 ACPI_EXTERN struct acpi_fixed_event_handler
 371     acpi_gbl_fixed_event_handlers[ACPI_NUM_FIXED_EVENTS];
 372 ACPI_EXTERN struct acpi_gpe_xrupt_info *acpi_gbl_gpe_xrupt_list_head;
 373 ACPI_EXTERN struct acpi_gpe_block_info
 374 *acpi_gbl_gpe_fadt_blocks[ACPI_MAX_GPE_BLOCKS];
 375
 376 #if (!ACPI_REDUCED_HARDWARE)
 377
 378 ACPI_EXTERN u8 acpi_gbl_all_gpes_initialized;
 379 ACPI_EXTERN acpi_gbl_event_handler acpi_gbl_global_event_handler;
 380 ACPI_EXTERN void *acpi_gbl_global_event_handler_context;
 381
 382 #endif                          /* !ACPI_REDUCED_HARDWARE */
 383
 384 /*****************************************************************************
 385  *
 386  * Debug support
 387  *
 388  ****************************************************************************/
 389
 390 /* Procedure nesting level for debug output */
 391
 392 extern u32 acpi_gbl_nesting_level;
 393
 394 /* Event counters */
 395
 396 ACPI_EXTERN u32 acpi_gpe_count;
 397 ACPI_EXTERN u32 acpi_fixed_event_count[ACPI_NUM_FIXED_EVENTS];
 398
 399 /* Support for dynamic control method tracing mechanism */
 400
 401 ACPI_EXTERN u32 acpi_gbl_original_dbg_level;
 402 ACPI_EXTERN u32 acpi_gbl_original_dbg_layer;
 403 ACPI_EXTERN u32 acpi_gbl_trace_dbg_level;
 404 ACPI_EXTERN u32 acpi_gbl_trace_dbg_layer;
 405
 406 /*****************************************************************************
 407  *
 408  * Debugger globals
 409  *
 410  ****************************************************************************/
 411
 412 ACPI_EXTERN u8 acpi_gbl_db_output_flags;
 413
 414 #ifdef ACPI_DISASSEMBLER
 415
 416 ACPI_EXTERN u8 acpi_gbl_db_opt_disasm;
 417 ACPI_EXTERN u8 acpi_gbl_db_opt_verbose;
 418 #endif
 419
 420 #ifdef ACPI_DEBUGGER
 421
 422 extern u8 acpi_gbl_method_executing;
 423 extern u8 acpi_gbl_abort_method;
 424 extern u8 acpi_gbl_db_terminate_threads;
 425
 426 ACPI_EXTERN u8 acpi_gbl_db_opt_tables;
 427 ACPI_EXTERN u8 acpi_gbl_db_opt_stats;
 428 ACPI_EXTERN u8 acpi_gbl_db_opt_ini_methods;
 429
 430 ACPI_EXTERN char *acpi_gbl_db_args[ACPI_DEBUGGER_MAX_ARGS];
 431 ACPI_EXTERN acpi_object_type acpi_gbl_db_arg_types[ACPI_DEBUGGER_MAX_ARGS];
 432 ACPI_EXTERN char acpi_gbl_db_line_buf[ACPI_DB_LINE_BUFFER_SIZE];
 433 ACPI_EXTERN char acpi_gbl_db_parsed_buf[ACPI_DB_LINE_BUFFER_SIZE];
 434 ACPI_EXTERN char acpi_gbl_db_scope_buf[80];
 435 ACPI_EXTERN char acpi_gbl_db_debug_filename[80];
 436 ACPI_EXTERN u8 acpi_gbl_db_output_to_file;
 437 ACPI_EXTERN char *acpi_gbl_db_buffer;
 438 ACPI_EXTERN char *acpi_gbl_db_filename;
 439 ACPI_EXTERN u32 acpi_gbl_db_debug_level;
 440 ACPI_EXTERN u32 acpi_gbl_db_console_debug_level;
 441 ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_db_scope_node;
 442
 443 /*
 444  * Statistic globals
 445  */
 446 ACPI_EXTERN u16 acpi_gbl_obj_type_count[ACPI_TYPE_NS_NODE_MAX + 1];
 447 ACPI_EXTERN u16 acpi_gbl_node_type_count[ACPI_TYPE_NS_NODE_MAX + 1];
 448 ACPI_EXTERN u16 acpi_gbl_obj_type_count_misc;
 449 ACPI_EXTERN u16 acpi_gbl_node_type_count_misc;
 450 ACPI_EXTERN u32 acpi_gbl_num_nodes;
 451 ACPI_EXTERN u32 acpi_gbl_num_objects;
 452
 453 ACPI_EXTERN u32 acpi_gbl_size_of_parse_tree;
 454 ACPI_EXTERN u32 acpi_gbl_size_of_method_trees;
 455 ACPI_EXTERN u32 acpi_gbl_size_of_node_entries;
 456 ACPI_EXTERN u32 acpi_gbl_size_of_acpi_objects;
 457
 458 #endif                          /* ACPI_DEBUGGER */
 459
 460 /*****************************************************************************
 461  *
 462  * Info/help support
 463  *
 464  ****************************************************************************/
 465
 466 extern const struct ah_predefined_name asl_predefined_info[];
 467
 468 #endif                          /* __ACGLOBAL_H__ */