drivers/acpi/acpica/acglobal.h

   1 /******************************************************************************
   2  *
   3  * Name: acglobal.h - Declarations for global variables
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2008, 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 /*****************************************************************************
  62  *
  63  * Runtime configuration (static defaults that can be overriden at runtime)
  64  *
  65  ****************************************************************************/
  66
  67 /*
  68  * Enable "slack" in the AML interpreter?  Default is FALSE, and the
  69  * interpreter strictly follows the ACPI specification.  Setting to TRUE
  70  * allows the interpreter to ignore certain errors and/or bad AML constructs.
  71  *
  72  * Currently, these features are enabled by this flag:
  73  *
  74  * 1) Allow "implicit return" of last value in a control method
  75  * 2) Allow access beyond the end of an operation region
  76  * 3) Allow access to uninitialized locals/args (auto-init to integer 0)
  77  * 4) Allow ANY object type to be a source operand for the Store() operator
  78  * 5) Allow unresolved references (invalid target name) in package objects
  79  * 6) Enable warning messages for behavior that is not ACPI spec compliant
  80  */
  81 ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_enable_interpreter_slack, FALSE);
  82
  83 /*
  84  * Automatically serialize ALL control methods? Default is FALSE, meaning
  85  * to use the Serialized/not_serialized method flags on a per method basis.
  86  * Only change this if the ASL code is poorly written and cannot handle
  87  * reentrancy even though methods are marked "NotSerialized".
  88  */
  89 ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_all_methods_serialized, FALSE);
  90
  91 /*
  92  * Create the predefined _OSI method in the namespace? Default is TRUE
  93  * because ACPI CA is fully compatible with other ACPI implementations.
  94  * Changing this will revert ACPI CA (and machine ASL) to pre-OSI behavior.
  95  */
  96 ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_create_osi_method, TRUE);
  97
  98 /*
  99  * Disable wakeup GPEs during runtime? Default is TRUE because WAKE and
 100  * RUNTIME GPEs should never be shared, and WAKE GPEs should typically only
 101  * be enabled just before going to sleep.
 102  */
 103 ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_leave_wake_gpes_disabled, TRUE);
 104
 105 /*
 106  * Optionally use default values for the ACPI register widths. Set this to
 107  * TRUE to use the defaults, if an FADT contains incorrect widths/lengths.
 108  */
 109 ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_use_default_register_widths, TRUE);
 110
 111 /*****************************************************************************
 112  *
 113  * Debug support
 114  *
 115  ****************************************************************************/
 116
 117 /* Runtime configuration of debug print levels */
 118
 119 extern u32 acpi_dbg_level;
 120 extern u32 acpi_dbg_layer;
 121
 122 /* Procedure nesting level for debug output */
 123
 124 extern u32 acpi_gbl_nesting_level;
 125
 126 /* Support for dynamic control method tracing mechanism */
 127
 128 ACPI_EXTERN u32 acpi_gbl_original_dbg_level;
 129 ACPI_EXTERN u32 acpi_gbl_original_dbg_layer;
 130 ACPI_EXTERN acpi_name acpi_gbl_trace_method_name;
 131 ACPI_EXTERN u32 acpi_gbl_trace_dbg_level;
 132 ACPI_EXTERN u32 acpi_gbl_trace_dbg_layer;
 133 ACPI_EXTERN u32 acpi_gbl_trace_flags;
 134
 135 /*****************************************************************************
 136  *
 137  * ACPI Table globals
 138  *
 139  ****************************************************************************/
 140
 141 /*
 142  * acpi_gbl_root_table_list is the master list of ACPI tables found in the
 143  * RSDT/XSDT.
 144  *
 145  * acpi_gbl_FADT is a local copy of the FADT, converted to a common format.
 146  */
 147 ACPI_EXTERN struct acpi_internal_rsdt acpi_gbl_root_table_list;
 148 ACPI_EXTERN struct acpi_table_fadt acpi_gbl_FADT;
 149 ACPI_EXTERN struct acpi_table_facs *acpi_gbl_FACS;
 150
 151 /* These addresses are calculated from the FADT Event Block addresses */
 152
 153 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1a_status;
 154 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1a_enable;
 155
 156 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1b_status;
 157 ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1b_enable;
 158
 159 /*
 160  * Handle both ACPI 1.0 and ACPI 2.0 Integer widths. The integer width is
 161  * determined by the revision of the DSDT: If the DSDT revision is less than
 162  * 2, use only the lower 32 bits of the internal 64-bit Integer.
 163  */
 164 ACPI_EXTERN u8 acpi_gbl_integer_bit_width;
 165 ACPI_EXTERN u8 acpi_gbl_integer_byte_width;
 166 ACPI_EXTERN u8 acpi_gbl_integer_nybble_width;
 167
 168 /* Reader/Writer lock is used for namespace walk and dynamic table unload */
 169
 170 ACPI_EXTERN struct acpi_rw_lock acpi_gbl_namespace_rw_lock;
 171
 172 /*****************************************************************************
 173  *
 174  * Mutual exlusion within ACPICA subsystem
 175  *
 176  ****************************************************************************/
 177
 178 /*
 179  * Predefined mutex objects. This array contains the
 180  * actual OS mutex handles, indexed by the local ACPI_MUTEX_HANDLEs.
 181  * (The table maps local handles to the real OS handles)
 182  */
 183 ACPI_EXTERN struct acpi_mutex_info acpi_gbl_mutex_info[ACPI_NUM_MUTEX];
 184
 185 /*
 186  * Global lock mutex is an actual AML mutex object
 187  * Global lock semaphore works in conjunction with the HW global lock
 188  */
 189 ACPI_EXTERN union acpi_operand_object *acpi_gbl_global_lock_mutex;
 190 ACPI_EXTERN acpi_semaphore acpi_gbl_global_lock_semaphore;
 191 ACPI_EXTERN u16 acpi_gbl_global_lock_handle;
 192 ACPI_EXTERN u8 acpi_gbl_global_lock_acquired;
 193 ACPI_EXTERN u8 acpi_gbl_global_lock_present;
 194
 195 /*
 196  * Spinlocks are used for interfaces that can be possibly called at
 197  * interrupt level
 198  */
 199 ACPI_EXTERN spinlock_t _acpi_gbl_gpe_lock;      /* For GPE data structs and registers */
 200 ACPI_EXTERN spinlock_t _acpi_gbl_hardware_lock; /* For ACPI H/W except GPE registers */
 201 #define acpi_gbl_gpe_lock       &_acpi_gbl_gpe_lock
 202 #define acpi_gbl_hardware_lock  &_acpi_gbl_hardware_lock
 203
 204 /*****************************************************************************
 205  *
 206  * Miscellaneous globals
 207  *
 208  ****************************************************************************/
 209
 210 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 211
 212 /* Lists for tracking memory allocations */
 213
 214 ACPI_EXTERN struct acpi_memory_list *acpi_gbl_global_list;
 215 ACPI_EXTERN struct acpi_memory_list *acpi_gbl_ns_node_list;
 216 ACPI_EXTERN u8 acpi_gbl_display_final_mem_stats;
 217 #endif
 218
 219 /* Object caches */
 220
 221 ACPI_EXTERN acpi_cache_t *acpi_gbl_namespace_cache;
 222 ACPI_EXTERN acpi_cache_t *acpi_gbl_state_cache;
 223 ACPI_EXTERN acpi_cache_t *acpi_gbl_ps_node_cache;
 224 ACPI_EXTERN acpi_cache_t *acpi_gbl_ps_node_ext_cache;
 225 ACPI_EXTERN acpi_cache_t *acpi_gbl_operand_cache;
 226
 227 /* Global handlers */
 228
 229 ACPI_EXTERN struct acpi_object_notify_handler acpi_gbl_device_notify;
 230 ACPI_EXTERN struct acpi_object_notify_handler acpi_gbl_system_notify;
 231 ACPI_EXTERN acpi_exception_handler acpi_gbl_exception_handler;
 232 ACPI_EXTERN acpi_init_handler acpi_gbl_init_handler;
 233 ACPI_EXTERN acpi_tbl_handler acpi_gbl_table_handler;
 234 ACPI_EXTERN void *acpi_gbl_table_handler_context;
 235 ACPI_EXTERN struct acpi_walk_state *acpi_gbl_breakpoint_walk;
 236
 237 /* Owner ID support */
 238
 239 ACPI_EXTERN u32 acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS];
 240 ACPI_EXTERN u8 acpi_gbl_last_owner_id_index;
 241 ACPI_EXTERN u8 acpi_gbl_next_owner_id_offset;
 242
 243 /* Misc */
 244
 245 ACPI_EXTERN u32 acpi_gbl_original_mode;
 246 ACPI_EXTERN u32 acpi_gbl_rsdp_original_location;
 247 ACPI_EXTERN u32 acpi_gbl_ns_lookup_count;
 248 ACPI_EXTERN u32 acpi_gbl_ps_find_count;
 249 ACPI_EXTERN u16 acpi_gbl_pm1_enable_register_save;
 250 ACPI_EXTERN u8 acpi_gbl_debugger_configuration;
 251 ACPI_EXTERN u8 acpi_gbl_step_to_next_call;
 252 ACPI_EXTERN u8 acpi_gbl_acpi_hardware_present;
 253 ACPI_EXTERN u8 acpi_gbl_events_initialized;
 254 ACPI_EXTERN u8 acpi_gbl_system_awake_and_running;
 255 ACPI_EXTERN u8 acpi_gbl_osi_data;
 256
 257 #ifndef DEFINE_ACPI_GLOBALS
 258
 259 /* Other miscellaneous */
 260
 261 extern u8 acpi_gbl_shutdown;
 262 extern u32 acpi_gbl_startup_flags;
 263 extern const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT];
 264 extern const char *acpi_gbl_highest_dstate_names[4];
 265 extern const struct acpi_opcode_info acpi_gbl_aml_op_info[AML_NUM_OPCODES];
 266 extern const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS];
 267
 268 #endif
 269
 270 /* Exception codes */
 271
 272 extern char const *acpi_gbl_exception_names_env[];
 273 extern char const *acpi_gbl_exception_names_pgm[];
 274 extern char const *acpi_gbl_exception_names_tbl[];
 275 extern char const *acpi_gbl_exception_names_aml[];
 276 extern char const *acpi_gbl_exception_names_ctrl[];
 277
 278 /*****************************************************************************
 279  *
 280  * Namespace globals
 281  *
 282  ****************************************************************************/
 283
 284 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
 285 #define NUM_PREDEFINED_NAMES            10
 286 #else
 287 #define NUM_PREDEFINED_NAMES            9
 288 #endif
 289
 290 ACPI_EXTERN struct acpi_namespace_node acpi_gbl_root_node_struct;
 291 ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_root_node;
 292 ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_fadt_gpe_device;
 293
 294 extern const u8 acpi_gbl_ns_properties[ACPI_NUM_NS_TYPES];
 295 extern const struct acpi_predefined_names
 296     acpi_gbl_pre_defined_names[NUM_PREDEFINED_NAMES];
 297
 298 #ifdef ACPI_DEBUG_OUTPUT
 299 ACPI_EXTERN u32 acpi_gbl_current_node_count;
 300 ACPI_EXTERN u32 acpi_gbl_current_node_size;
 301 ACPI_EXTERN u32 acpi_gbl_max_concurrent_node_count;
 302 ACPI_EXTERN acpi_size *acpi_gbl_entry_stack_pointer;
 303 ACPI_EXTERN acpi_size *acpi_gbl_lowest_stack_pointer;
 304 ACPI_EXTERN u32 acpi_gbl_deepest_nesting;
 305 #endif
 306
 307 /*****************************************************************************
 308  *
 309  * Interpreter globals
 310  *
 311  ****************************************************************************/
 312
 313 ACPI_EXTERN struct acpi_thread_state *acpi_gbl_current_walk_list;
 314
 315 /* Control method single step flag */
 316
 317 ACPI_EXTERN u8 acpi_gbl_cm_single_step;
 318
 319 /*****************************************************************************
 320  *
 321  * Hardware globals
 322  *
 323  ****************************************************************************/
 324
 325 extern struct acpi_bit_register_info
 326     acpi_gbl_bit_register_info[ACPI_NUM_BITREG];
 327 ACPI_EXTERN u8 acpi_gbl_sleep_type_a;
 328 ACPI_EXTERN u8 acpi_gbl_sleep_type_b;
 329
 330 /*****************************************************************************
 331  *
 332  * Event and GPE globals
 333  *
 334  ****************************************************************************/
 335
 336 extern struct acpi_fixed_event_info
 337     acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS];
 338 ACPI_EXTERN struct acpi_fixed_event_handler
 339     acpi_gbl_fixed_event_handlers[ACPI_NUM_FIXED_EVENTS];
 340 ACPI_EXTERN struct acpi_gpe_xrupt_info *acpi_gbl_gpe_xrupt_list_head;
 341 ACPI_EXTERN struct acpi_gpe_block_info
 342 *acpi_gbl_gpe_fadt_blocks[ACPI_MAX_GPE_BLOCKS];
 343 ACPI_EXTERN u32 acpi_current_gpe_count;
 344
 345 /*****************************************************************************
 346  *
 347  * Debugger globals
 348  *
 349  ****************************************************************************/
 350
 351 ACPI_EXTERN u8 acpi_gbl_db_output_flags;
 352
 353 #ifdef ACPI_DISASSEMBLER
 354
 355 ACPI_EXTERN u8 acpi_gbl_db_opt_disasm;
 356 ACPI_EXTERN u8 acpi_gbl_db_opt_verbose;
 357 #endif
 358
 359 #ifdef ACPI_DEBUGGER
 360
 361 extern u8 acpi_gbl_method_executing;
 362 extern u8 acpi_gbl_abort_method;
 363 extern u8 acpi_gbl_db_terminate_threads;
 364
 365 ACPI_EXTERN u8 acpi_gbl_db_opt_tables;
 366 ACPI_EXTERN u8 acpi_gbl_db_opt_stats;
 367 ACPI_EXTERN u8 acpi_gbl_db_opt_ini_methods;
 368
 369 ACPI_EXTERN char *acpi_gbl_db_args[ACPI_DEBUGGER_MAX_ARGS];
 370 ACPI_EXTERN char acpi_gbl_db_line_buf[80];
 371 ACPI_EXTERN char acpi_gbl_db_parsed_buf[80];
 372 ACPI_EXTERN char acpi_gbl_db_scope_buf[40];
 373 ACPI_EXTERN char acpi_gbl_db_debug_filename[40];
 374 ACPI_EXTERN u8 acpi_gbl_db_output_to_file;
 375 ACPI_EXTERN char *acpi_gbl_db_buffer;
 376 ACPI_EXTERN char *acpi_gbl_db_filename;
 377 ACPI_EXTERN u32 acpi_gbl_db_debug_level;
 378 ACPI_EXTERN u32 acpi_gbl_db_console_debug_level;
 379 ACPI_EXTERN struct acpi_namespace_node *acpi_gbl_db_scope_node;
 380
 381 /*
 382  * Statistic globals
 383  */
 384 ACPI_EXTERN u16 acpi_gbl_obj_type_count[ACPI_TYPE_NS_NODE_MAX + 1];
 385 ACPI_EXTERN u16 acpi_gbl_node_type_count[ACPI_TYPE_NS_NODE_MAX + 1];
 386 ACPI_EXTERN u16 acpi_gbl_obj_type_count_misc;
 387 ACPI_EXTERN u16 acpi_gbl_node_type_count_misc;
 388 ACPI_EXTERN u32 acpi_gbl_num_nodes;
 389 ACPI_EXTERN u32 acpi_gbl_num_objects;
 390
 391 ACPI_EXTERN u32 acpi_gbl_size_of_parse_tree;
 392 ACPI_EXTERN u32 acpi_gbl_size_of_method_trees;
 393 ACPI_EXTERN u32 acpi_gbl_size_of_node_entries;
 394 ACPI_EXTERN u32 acpi_gbl_size_of_acpi_objects;
 395
 396 #endif                          /* ACPI_DEBUGGER */
 397
 398 #endif                          /* __ACGLOBAL_H__ */