1 /****************************************************************************** 2 * 3 * Module Name: utglobal - Global variables for the ACPI subsystem 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2014, 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 #define EXPORT_ACPI_INTERFACES 45 #define DEFINE_ACPI_GLOBALS 46 47 #include <acpi/acpi.h> 48 #include "accommon.h" 49 50 #define _COMPONENT ACPI_UTILITIES 51 ACPI_MODULE_NAME("utglobal") 52 53 /******************************************************************************* 54 * 55 * Static global variable initialization. 56 * 57 ******************************************************************************/ 58 /* Debug output control masks */ 59 u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT; 60 61 u32 acpi_dbg_layer = 0; 62 63 /* acpi_gbl_FADT is a local copy of the FADT, converted to a common format. */ 64 65 struct acpi_table_fadt acpi_gbl_FADT; 66 u32 acpi_gbl_trace_flags; 67 acpi_name acpi_gbl_trace_method_name; 68 u8 acpi_gbl_system_awake_and_running; 69 u32 acpi_current_gpe_count; 70 71 /* 72 * ACPI 5.0 introduces the concept of a "reduced hardware platform", meaning 73 * that the ACPI hardware is no longer required. A flag in the FADT indicates 74 * a reduced HW machine, and that flag is duplicated here for convenience. 75 */ 76 u8 acpi_gbl_reduced_hardware; 77 78 /* Various state name strings */ 79 80 const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = { 81 "\\_S0_", 82 "\\_S1_", 83 "\\_S2_", 84 "\\_S3_", 85 "\\_S4_", 86 "\\_S5_" 87 }; 88 89 const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS] = { 90 "_S0W", 91 "_S1W", 92 "_S2W", 93 "_S3W", 94 "_S4W" 95 }; 96 97 const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS] = { 98 "_S1D", 99 "_S2D", 100 "_S3D", 101 "_S4D" 102 }; 103 104 /******************************************************************************* 105 * 106 * Namespace globals 107 * 108 ******************************************************************************/ 109 /* 110 * Predefined ACPI Names (Built-in to the Interpreter) 111 * 112 * NOTES: 113 * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run 114 * during the initialization sequence. 115 * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to 116 * perform a Notify() operation on it. 09/2010: Changed to type Device. 117 * This still allows notifies, but does not confuse host code that 118 * searches for valid thermal_zone objects. 119 */ 120 const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = { 121 {"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL}, 122 {"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL}, 123 {"_SB_", ACPI_TYPE_DEVICE, NULL}, 124 {"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL}, 125 {"_TZ_", ACPI_TYPE_DEVICE, NULL}, 126 {"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL}, 127 {"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME}, 128 {"_GL_", ACPI_TYPE_MUTEX, (char *)1}, 129 130 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY) 131 {"_OSI", ACPI_TYPE_METHOD, (char *)1}, 132 #endif 133 134 /* Table terminator */ 135 136 {NULL, ACPI_TYPE_ANY, NULL} 137 }; 138 139 #if (!ACPI_REDUCED_HARDWARE) 140 /****************************************************************************** 141 * 142 * Event and Hardware globals 143 * 144 ******************************************************************************/ 145 146 struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = { 147 /* Name Parent Register Register Bit Position Register Bit Mask */ 148 149 /* ACPI_BITREG_TIMER_STATUS */ {ACPI_REGISTER_PM1_STATUS, 150 ACPI_BITPOSITION_TIMER_STATUS, 151 ACPI_BITMASK_TIMER_STATUS}, 152 /* ACPI_BITREG_BUS_MASTER_STATUS */ {ACPI_REGISTER_PM1_STATUS, 153 ACPI_BITPOSITION_BUS_MASTER_STATUS, 154 ACPI_BITMASK_BUS_MASTER_STATUS}, 155 /* ACPI_BITREG_GLOBAL_LOCK_STATUS */ {ACPI_REGISTER_PM1_STATUS, 156 ACPI_BITPOSITION_GLOBAL_LOCK_STATUS, 157 ACPI_BITMASK_GLOBAL_LOCK_STATUS}, 158 /* ACPI_BITREG_POWER_BUTTON_STATUS */ {ACPI_REGISTER_PM1_STATUS, 159 ACPI_BITPOSITION_POWER_BUTTON_STATUS, 160 ACPI_BITMASK_POWER_BUTTON_STATUS}, 161 /* ACPI_BITREG_SLEEP_BUTTON_STATUS */ {ACPI_REGISTER_PM1_STATUS, 162 ACPI_BITPOSITION_SLEEP_BUTTON_STATUS, 163 ACPI_BITMASK_SLEEP_BUTTON_STATUS}, 164 /* ACPI_BITREG_RT_CLOCK_STATUS */ {ACPI_REGISTER_PM1_STATUS, 165 ACPI_BITPOSITION_RT_CLOCK_STATUS, 166 ACPI_BITMASK_RT_CLOCK_STATUS}, 167 /* ACPI_BITREG_WAKE_STATUS */ {ACPI_REGISTER_PM1_STATUS, 168 ACPI_BITPOSITION_WAKE_STATUS, 169 ACPI_BITMASK_WAKE_STATUS}, 170 /* ACPI_BITREG_PCIEXP_WAKE_STATUS */ {ACPI_REGISTER_PM1_STATUS, 171 ACPI_BITPOSITION_PCIEXP_WAKE_STATUS, 172 ACPI_BITMASK_PCIEXP_WAKE_STATUS}, 173 174 /* ACPI_BITREG_TIMER_ENABLE */ {ACPI_REGISTER_PM1_ENABLE, 175 ACPI_BITPOSITION_TIMER_ENABLE, 176 ACPI_BITMASK_TIMER_ENABLE}, 177 /* ACPI_BITREG_GLOBAL_LOCK_ENABLE */ {ACPI_REGISTER_PM1_ENABLE, 178 ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE, 179 ACPI_BITMASK_GLOBAL_LOCK_ENABLE}, 180 /* ACPI_BITREG_POWER_BUTTON_ENABLE */ {ACPI_REGISTER_PM1_ENABLE, 181 ACPI_BITPOSITION_POWER_BUTTON_ENABLE, 182 ACPI_BITMASK_POWER_BUTTON_ENABLE}, 183 /* ACPI_BITREG_SLEEP_BUTTON_ENABLE */ {ACPI_REGISTER_PM1_ENABLE, 184 ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE, 185 ACPI_BITMASK_SLEEP_BUTTON_ENABLE}, 186 /* ACPI_BITREG_RT_CLOCK_ENABLE */ {ACPI_REGISTER_PM1_ENABLE, 187 ACPI_BITPOSITION_RT_CLOCK_ENABLE, 188 ACPI_BITMASK_RT_CLOCK_ENABLE}, 189 /* ACPI_BITREG_PCIEXP_WAKE_DISABLE */ {ACPI_REGISTER_PM1_ENABLE, 190 ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE, 191 ACPI_BITMASK_PCIEXP_WAKE_DISABLE}, 192 193 /* ACPI_BITREG_SCI_ENABLE */ {ACPI_REGISTER_PM1_CONTROL, 194 ACPI_BITPOSITION_SCI_ENABLE, 195 ACPI_BITMASK_SCI_ENABLE}, 196 /* ACPI_BITREG_BUS_MASTER_RLD */ {ACPI_REGISTER_PM1_CONTROL, 197 ACPI_BITPOSITION_BUS_MASTER_RLD, 198 ACPI_BITMASK_BUS_MASTER_RLD}, 199 /* ACPI_BITREG_GLOBAL_LOCK_RELEASE */ {ACPI_REGISTER_PM1_CONTROL, 200 ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE, 201 ACPI_BITMASK_GLOBAL_LOCK_RELEASE}, 202 /* ACPI_BITREG_SLEEP_TYPE */ {ACPI_REGISTER_PM1_CONTROL, 203 ACPI_BITPOSITION_SLEEP_TYPE, 204 ACPI_BITMASK_SLEEP_TYPE}, 205 /* ACPI_BITREG_SLEEP_ENABLE */ {ACPI_REGISTER_PM1_CONTROL, 206 ACPI_BITPOSITION_SLEEP_ENABLE, 207 ACPI_BITMASK_SLEEP_ENABLE}, 208 209 /* ACPI_BITREG_ARB_DIS */ {ACPI_REGISTER_PM2_CONTROL, 210 ACPI_BITPOSITION_ARB_DISABLE, 211 ACPI_BITMASK_ARB_DISABLE} 212 }; 213 214 struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = { 215 /* ACPI_EVENT_PMTIMER */ {ACPI_BITREG_TIMER_STATUS, 216 ACPI_BITREG_TIMER_ENABLE, 217 ACPI_BITMASK_TIMER_STATUS, 218 ACPI_BITMASK_TIMER_ENABLE}, 219 /* ACPI_EVENT_GLOBAL */ {ACPI_BITREG_GLOBAL_LOCK_STATUS, 220 ACPI_BITREG_GLOBAL_LOCK_ENABLE, 221 ACPI_BITMASK_GLOBAL_LOCK_STATUS, 222 ACPI_BITMASK_GLOBAL_LOCK_ENABLE}, 223 /* ACPI_EVENT_POWER_BUTTON */ {ACPI_BITREG_POWER_BUTTON_STATUS, 224 ACPI_BITREG_POWER_BUTTON_ENABLE, 225 ACPI_BITMASK_POWER_BUTTON_STATUS, 226 ACPI_BITMASK_POWER_BUTTON_ENABLE}, 227 /* ACPI_EVENT_SLEEP_BUTTON */ {ACPI_BITREG_SLEEP_BUTTON_STATUS, 228 ACPI_BITREG_SLEEP_BUTTON_ENABLE, 229 ACPI_BITMASK_SLEEP_BUTTON_STATUS, 230 ACPI_BITMASK_SLEEP_BUTTON_ENABLE}, 231 /* ACPI_EVENT_RTC */ {ACPI_BITREG_RT_CLOCK_STATUS, 232 ACPI_BITREG_RT_CLOCK_ENABLE, 233 ACPI_BITMASK_RT_CLOCK_STATUS, 234 ACPI_BITMASK_RT_CLOCK_ENABLE}, 235 }; 236 #endif /* !ACPI_REDUCED_HARDWARE */ 237 238 /******************************************************************************* 239 * 240 * FUNCTION: acpi_ut_init_globals 241 * 242 * PARAMETERS: None 243 * 244 * RETURN: Status 245 * 246 * DESCRIPTION: Initialize ACPICA globals. All globals that require specific 247 * initialization should be initialized here. This allows for 248 * a warm restart. 249 * 250 ******************************************************************************/ 251 252 acpi_status acpi_ut_init_globals(void) 253 { 254 acpi_status status; 255 u32 i; 256 257 ACPI_FUNCTION_TRACE(ut_init_globals); 258 259 /* Create all memory caches */ 260 261 status = acpi_ut_create_caches(); 262 if (ACPI_FAILURE(status)) { 263 return_ACPI_STATUS(status); 264 } 265 266 /* Address Range lists */ 267 268 for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) { 269 acpi_gbl_address_range_list[i] = NULL; 270 } 271 272 /* Mutex locked flags */ 273 274 for (i = 0; i < ACPI_NUM_MUTEX; i++) { 275 acpi_gbl_mutex_info[i].mutex = NULL; 276 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED; 277 acpi_gbl_mutex_info[i].use_count = 0; 278 } 279 280 for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) { 281 acpi_gbl_owner_id_mask[i] = 0; 282 } 283 284 /* Last owner_ID is never valid */ 285 286 acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000; 287 288 /* Event counters */ 289 290 acpi_method_count = 0; 291 acpi_sci_count = 0; 292 acpi_gpe_count = 0; 293 294 for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) { 295 acpi_fixed_event_count[i] = 0; 296 } 297 298 #if (!ACPI_REDUCED_HARDWARE) 299 300 /* GPE/SCI support */ 301 302 acpi_gbl_all_gpes_initialized = FALSE; 303 acpi_gbl_gpe_xrupt_list_head = NULL; 304 acpi_gbl_gpe_fadt_blocks[0] = NULL; 305 acpi_gbl_gpe_fadt_blocks[1] = NULL; 306 acpi_current_gpe_count = 0; 307 308 acpi_gbl_global_event_handler = NULL; 309 acpi_gbl_sci_handler_list = NULL; 310 311 #endif /* !ACPI_REDUCED_HARDWARE */ 312 313 /* Global handlers */ 314 315 acpi_gbl_global_notify[0].handler = NULL; 316 acpi_gbl_global_notify[1].handler = NULL; 317 acpi_gbl_exception_handler = NULL; 318 acpi_gbl_init_handler = NULL; 319 acpi_gbl_table_handler = NULL; 320 acpi_gbl_interface_handler = NULL; 321 322 /* Global Lock support */ 323 324 acpi_gbl_global_lock_semaphore = NULL; 325 acpi_gbl_global_lock_mutex = NULL; 326 acpi_gbl_global_lock_acquired = FALSE; 327 acpi_gbl_global_lock_handle = 0; 328 acpi_gbl_global_lock_present = FALSE; 329 330 /* Miscellaneous variables */ 331 332 acpi_gbl_DSDT = NULL; 333 acpi_gbl_cm_single_step = FALSE; 334 acpi_gbl_shutdown = FALSE; 335 acpi_gbl_ns_lookup_count = 0; 336 acpi_gbl_ps_find_count = 0; 337 acpi_gbl_acpi_hardware_present = TRUE; 338 acpi_gbl_last_owner_id_index = 0; 339 acpi_gbl_next_owner_id_offset = 0; 340 acpi_gbl_trace_method_name = 0; 341 acpi_gbl_trace_dbg_level = 0; 342 acpi_gbl_trace_dbg_layer = 0; 343 acpi_gbl_debugger_configuration = DEBUGGER_THREADING; 344 acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT; 345 acpi_gbl_osi_mutex = NULL; 346 acpi_gbl_reg_methods_executed = FALSE; 347 348 /* Hardware oriented */ 349 350 acpi_gbl_events_initialized = FALSE; 351 acpi_gbl_system_awake_and_running = TRUE; 352 353 /* Namespace */ 354 355 acpi_gbl_module_code_list = NULL; 356 acpi_gbl_root_node = NULL; 357 acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME; 358 acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED; 359 acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE; 360 acpi_gbl_root_node_struct.parent = NULL; 361 acpi_gbl_root_node_struct.child = NULL; 362 acpi_gbl_root_node_struct.peer = NULL; 363 acpi_gbl_root_node_struct.object = NULL; 364 365 #ifdef ACPI_DISASSEMBLER 366 acpi_gbl_external_list = NULL; 367 acpi_gbl_num_external_methods = 0; 368 acpi_gbl_resolved_external_methods = 0; 369 #endif 370 371 #ifdef ACPI_DEBUG_OUTPUT 372 acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX); 373 #endif 374 375 #ifdef ACPI_DBG_TRACK_ALLOCATIONS 376 acpi_gbl_display_final_mem_stats = FALSE; 377 acpi_gbl_disable_mem_tracking = FALSE; 378 #endif 379 380 #ifdef ACPI_DEBUGGER 381 acpi_gbl_db_terminate_threads = FALSE; 382 #endif 383 384 return_ACPI_STATUS(AE_OK); 385 } 386 387 /* Public globals */ 388 389 ACPI_EXPORT_SYMBOL(acpi_gbl_FADT) 390 ACPI_EXPORT_SYMBOL(acpi_dbg_level) 391 ACPI_EXPORT_SYMBOL(acpi_dbg_layer) 392 ACPI_EXPORT_SYMBOL(acpi_gpe_count) 393 ACPI_EXPORT_SYMBOL(acpi_current_gpe_count) 394