drivers/acpi/acpica/acglobal.h

   1 /******************************************************************************
   2  *
   3  * Name: acglobal.h - Declarations for global variables
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2010, 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  * Disable wakeup GPEs during runtime? Default is TRUE because WAKE and
 104  * RUNTIME GPEs should never be shared, and WAKE GPEs should typically only
 105  * be enabled just before going to sleep.
 106  */
 107 u8 ACPI_INIT_GLOBAL(acpi_gbl_leave_wake_gpes_disabled, TRUE);
 108
 109 /*
 110  * Optionally use default values for the ACPI register widths. Set this to
 111  * TRUE to use the defaults, if an FADT contains incorrect widths/lengths.
 112  */
 113 u8 ACPI_INIT_GLOBAL(acpi_gbl_use_default_register_widths, TRUE);
 114
 115 /*
 116  * Optionally enable output from the AML Debug Object.
 117  */
 118 u8 ACPI_INIT_GLOBAL(acpi_gbl_enable_aml_debug_object, FALSE);
 119
 120 /*
 121  * Optionally copy the entire DSDT to local memory (instead of simply
 122  * mapping it.) There are some BIOSs that corrupt or replace the original
 123  * DSDT, creating the need for this option. Default is FALSE, do not copy
 124  * the DSDT.
 125  */
 126 u8 ACPI_INIT_GLOBAL(acpi_gbl_copy_dsdt_locally, FALSE);
 127
 128 /* acpi_gbl_FADT is a local copy of the FADT, converted to a common format. */
 129
 130 struct acpi_table_fadt acpi_gbl_FADT;
 131 u32 acpi_current_gpe_count;
 132 u32 acpi_gbl_trace_flags;
 133 acpi_name acpi_gbl_trace_method_name;
 134
 135 #endif
 136
 137 /*****************************************************************************
 138  *
 139  * Debug support
 140  *
 141  ****************************************************************************/
 142
 143 /* Procedure nesting level for debug output */
 144
 145 extern u32 acpi_gbl_nesting_level;
 146
 147 /* Support for dynamic control method tracing mechanism */
 148
 149 ACPI_EXTERN u32 acpi_gbl_original_dbg_level;
 150 ACPI_EXTERN u32 acpi_gbl_original_dbg_layer;
 151 ACPI_EXTERN u32 acpi_gbl_trace_dbg_level;
 152 ACPI_EXTERN u32 acpi_gbl_trace_dbg_layer;
 153
 154 /*****************************************************************************
 155  *
 156  * ACPI Table globals
 157  *
 158  ****************************************************************************/
 159
 160 /*
 161  * acpi_gbl_root_table_list is the master list of ACPI tables that were
 162  * found in the RSDT/XSDT.
 163  */
 164 ACPI_EXTERN struct acpi_table_list acpi_gbl_root_table_list;
 165 ACPI_EXTERN struct acpi_table_facs *acpi_gbl_FACS;
 166
 167 /* These addresses are calculated from the FADT Event Block addresses */
 168
 169 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1a_status;
 170 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1a_enable;
 171
 172 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1b_status;
 173 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1b_enable;
 174
 175 /* DSDT information. Used to check for DSDT corruption */
 176
 177 ACPI_EXTERN struct acpi_table_header *acpi_gbl_DSDT;
 178 ACPI_EXTERN struct acpi_table_header acpi_gbl_original_dsdt_header;
 179
 180 /*
 181  * Handle both ACPI 1.0 and ACPI 2.0 Integer widths. The integer width is
 182  * determined by the revision of the DSDT: If the DSDT revision is less than
 183  * 2, use only the lower 32 bits of the internal 64-bit Integer.
 184  */
 185 ACPI_EXTERN u8 acpi_gbl_integer_bit_width;
 186 ACPI_EXTERN u8 acpi_gbl_integer_byte_width;
 187 ACPI_EXTERN u8 acpi_gbl_integer_nybble_width;
 188
 189 /* Reader/Writer lock is used for namespace walk and dynamic table unload */
 190
 191 ACPI_EXTERN struct acpi_rw_lock acpi_gbl_namespace_rw_lock;
 192
 193 /*****************************************************************************
 194  *
 195  * Mutual exlusion within ACPICA subsystem
 196  *
 197  ****************************************************************************/
 198
 199 /*
 200  * Predefined mutex objects. This array contains the
 201  * actual OS mutex handles, indexed by the local ACPI_MUTEX_HANDLEs.
 202  * (The table maps local handles to the real OS handles)
 203  */
 204 ACPI_EXTERN struct acpi_mutex_info acpi_gbl_mutex_info[ACPI_NUM_MUTEX];
 205
 206 /*
 207  * Global lock mutex is an actual AML mutex object
 208  * Global lock semaphore works in conjunction with the HW global lock
 209  */
 210 ACPI_EXTERN union acpi_operand_object *acpi_gbl_global_lock_mutex;
 211 ACPI_EXTERN acpi_semaphore acpi_gbl_global_lock_semaphore;
 212 ACPI_EXTERN u16 acpi_gbl_global_lock_handle;
 213 ACPI_EXTERN u8 acpi_gbl_global_lock_acquired;
 214 ACPI_EXTERN u8 acpi_gbl_global_lock_present;
 215
 216 /*
 217  * Spinlocks are used for interfaces that can be possibly called at
 218  * interrupt level
 219  */
 220 ACPI_EXTERN spinlock_t _acpi_gbl_gpe_lock;      /* For GPE data structs and registers */
 221 ACPI_EXTERN spinlock_t _acpi_gbl_hardware_lock; /* For ACPI H/W except GPE registers */
 222 #define acpi_gbl_gpe_lock       &_acpi_gbl_gpe_lock
 223 #define acpi_gbl_hardware_lock  &_acpi_gbl_hardware_lock
 224
 225 /*****************************************************************************
 226  *
 227  * Miscellaneous globals
 228  *
 229  ****************************************************************************/
 230
 231 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 232
 233 /* Lists for tracking memory allocations */
 234
 235 ACPI_EXTERN struct acpi_memory_list *acpi_gbl_global_list;
 236 ACPI_EXTERN struct acpi_memory_list *acpi_gbl_ns_node_list;
 237 ACPI_EXTERN u8 acpi_gbl_display_final_mem_stats;
 238 #endif
 239
 240 /* Object caches */
 241
 242 ACPI_EXTERN acpi_cache_t *acpi_gbl_namespace_cache;
 243 ACPI_EXTERN acpi_cache_t *acpi_gbl_state_cache;
 244 ACPI_EXTERN acpi_cache_t *acpi_gbl_ps_node_cache;
 245 ACPI_EXTERN acpi_cache_t *acpi_gbl_ps_node_ext_cache;
 246 ACPI_EXTERN acpi_cache_t *acpi_gbl_operand_cache;
 247
 248 /* Global handlers */
 249
 250 ACPI_EXTERN struct acpi_object_notify_handler acpi_gbl_device_notify;
 251 ACPI_EXTERN struct acpi_object_notify_handler acpi_gbl_system_notify;
 252 ACPI_EXTERN acpi_exception_handler acpi_gbl_exception_handler;
 253 ACPI_EXTERN acpi_init_handler acpi_gbl_init_handler;
 254 ACPI_EXTERN acpi_tbl_handler acpi_gbl_table_handler;
 255 ACPI_EXTERN void *acpi_gbl_table_handler_context;
 256 ACPI_EXTERN struct acpi_walk_state *acpi_gbl_breakpoint_walk;
 257
 258 /* Owner ID support */
 259
 260 ACPI_EXTERN u32 acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS];
 261 ACPI_EXTERN u8 acpi_gbl_last_owner_id_index;
 262 ACPI_EXTERN u8 acpi_gbl_next_owner_id_offset;
 263
 264 /* Misc */
 265
 266 ACPI_EXTERN u32 acpi_gbl_original_mode;
 267 ACPI_EXTERN u32 acpi_gbl_rsdp_original_location;
 268 ACPI_EXTERN u32 acpi_gbl_ns_lookup_count;
 269 ACPI_EXTERN u32 acpi_gbl_ps_find_count;
 270 ACPI_EXTERN u16 acpi_gbl_pm1_enable_register_save;
 271 ACPI_EXTERN u8 acpi_gbl_debugger_configuration;
 272 ACPI_EXTERN u8 acpi_gbl_step_to_next_call;
 273 ACPI_EXTERN u8 acpi_gbl_acpi_hardware_present;
 274 ACPI_EXTERN u8 acpi_gbl_events_initialized;
 275 ACPI_EXTERN u8 acpi_gbl_system_awake_and_running;
 276 ACPI_EXTERN u8 acpi_gbl_osi_data;
 277
 278 #ifndef DEFINE_ACPI_GLOBALS
 279
 280 /* Other miscellaneous */
 281
 282 extern u8 acpi_gbl_shutdown;
 283 extern u32 acpi_gbl_startup_flags;
 284 extern const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT];
 285 extern const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS];
 286 extern const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS];
 287 extern const struct acpi_opcode_info acpi_gbl_aml_op_info[AML_NUM_OPCODES];
 288 extern const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS];
 289
 290 #endif
 291
 292 /* Exception codes */
 293
 294 extern char const *acpi_gbl_exception_names_env[];
 295 extern char const *acpi_gbl_exception_names_pgm[];
 296 extern char const *acpi_gbl_exception_names_tbl[];
 297 extern char const *acpi_gbl_exception_names_aml[];
 298 extern char const *acpi_gbl_exception_names_ctrl[];
 299
 300 /*****************************************************************************
 301  *
 302  * Namespace globals
 303  *
 304  ****************************************************************************/
 305
 306 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
 307 #define NUM_PREDEFINED_NAMES            10
 308 #else
 309 #define NUM_PREDEFINED_NAMES            9
 310 #endif
 311
 312 ACPI_EXTERN struct acpi_namespace_node acpi_gbl_root_node_struct;
 313 ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_root_node;
 314 ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_fadt_gpe_device;
 315 ACPI_EXTERN union acpi_operand_object *acpi_gbl_module_code_list;
 316
 317 extern const u8 acpi_gbl_ns_properties[ACPI_NUM_NS_TYPES];
 318 extern const struct acpi_predefined_names
 319     acpi_gbl_pre_defined_names[NUM_PREDEFINED_NAMES];
 320
 321 #ifdef ACPI_DEBUG_OUTPUT
 322 ACPI_EXTERN u32 acpi_gbl_current_node_count;
 323 ACPI_EXTERN u32 acpi_gbl_current_node_size;
 324 ACPI_EXTERN u32 acpi_gbl_max_concurrent_node_count;
 325 ACPI_EXTERN acpi_size *acpi_gbl_entry_stack_pointer;
 326 ACPI_EXTERN acpi_size *acpi_gbl_lowest_stack_pointer;
 327 ACPI_EXTERN u32 acpi_gbl_deepest_nesting;
 328 #endif
 329
 330 /*****************************************************************************
 331  *
 332  * Interpreter globals
 333  *
 334  ****************************************************************************/
 335
 336 ACPI_EXTERN struct acpi_thread_state *acpi_gbl_current_walk_list;
 337
 338 /* Control method single step flag */
 339
 340 ACPI_EXTERN u8 acpi_gbl_cm_single_step;
 341
 342 /*****************************************************************************
 343  *
 344  * Hardware globals
 345  *
 346  ****************************************************************************/
 347
 348 extern struct acpi_bit_register_info
 349     acpi_gbl_bit_register_info[ACPI_NUM_BITREG];
 350 ACPI_EXTERN u8 acpi_gbl_sleep_type_a;
 351 ACPI_EXTERN u8 acpi_gbl_sleep_type_b;
 352
 353 /*****************************************************************************
 354  *
 355  * Event and GPE globals
 356  *
 357  ****************************************************************************/
 358
 359 extern struct acpi_fixed_event_info
 360     acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS];
 361 ACPI_EXTERN struct acpi_fixed_event_handler
 362     acpi_gbl_fixed_event_handlers[ACPI_NUM_FIXED_EVENTS];
 363 ACPI_EXTERN struct acpi_gpe_xrupt_info *acpi_gbl_gpe_xrupt_list_head;
 364 ACPI_EXTERN struct acpi_gpe_block_info
 365 *acpi_gbl_gpe_fadt_blocks[ACPI_MAX_GPE_BLOCKS];
 366
 367 /*****************************************************************************
 368  *
 369  * Debugger globals
 370  *
 371  ****************************************************************************/
 372
 373 ACPI_EXTERN u8 acpi_gbl_db_output_flags;
 374
 375 #ifdef ACPI_DISASSEMBLER
 376
 377 ACPI_EXTERN u8 acpi_gbl_db_opt_disasm;
 378 ACPI_EXTERN u8 acpi_gbl_db_opt_verbose;
 379 #endif
 380
 381 #ifdef ACPI_DEBUGGER
 382
 383 extern u8 acpi_gbl_method_executing;
 384 extern u8 acpi_gbl_abort_method;
 385 extern u8 acpi_gbl_db_terminate_threads;
 386
 387 ACPI_EXTERN u8 acpi_gbl_db_opt_tables;
 388 ACPI_EXTERN u8 acpi_gbl_db_opt_stats;
 389 ACPI_EXTERN u8 acpi_gbl_db_opt_ini_methods;
 390
 391 ACPI_EXTERN char *acpi_gbl_db_args[ACPI_DEBUGGER_MAX_ARGS];
 392 ACPI_EXTERN char acpi_gbl_db_line_buf[80];
 393 ACPI_EXTERN char acpi_gbl_db_parsed_buf[80];
 394 ACPI_EXTERN char acpi_gbl_db_scope_buf[40];
 395 ACPI_EXTERN char acpi_gbl_db_debug_filename[40];
 396 ACPI_EXTERN u8 acpi_gbl_db_output_to_file;
 397 ACPI_EXTERN char *acpi_gbl_db_buffer;
 398 ACPI_EXTERN char *acpi_gbl_db_filename;
 399 ACPI_EXTERN u32 acpi_gbl_db_debug_level;
 400 ACPI_EXTERN u32 acpi_gbl_db_console_debug_level;
 401 ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_db_scope_node;
 402
 403 /*
 404  * Statistic globals
 405  */
 406 ACPI_EXTERN u16 acpi_gbl_obj_type_count[ACPI_TYPE_NS_NODE_MAX + 1];
 407 ACPI_EXTERN u16 acpi_gbl_node_type_count[ACPI_TYPE_NS_NODE_MAX + 1];
 408 ACPI_EXTERN u16 acpi_gbl_obj_type_count_misc;
 409 ACPI_EXTERN u16 acpi_gbl_node_type_count_misc;
 410 ACPI_EXTERN u32 acpi_gbl_num_nodes;
 411 ACPI_EXTERN u32 acpi_gbl_num_objects;
 412
 413 ACPI_EXTERN u32 acpi_gbl_size_of_parse_tree;
 414 ACPI_EXTERN u32 acpi_gbl_size_of_method_trees;
 415 ACPI_EXTERN u32 acpi_gbl_size_of_node_entries;
 416 ACPI_EXTERN u32 acpi_gbl_size_of_acpi_objects;
 417
 418 #endif                          /* ACPI_DEBUGGER */
 419
 420 #endif                          /* __ACGLOBAL_H__ */