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