drivers/acpi/acpica/utglobal.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utglobal - Global variables for the ACPI subsystem
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2011, 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 <acpi/acpi.h>
  47 #include "accommon.h"
  48
  49 #define _COMPONENT          ACPI_UTILITIES
  50 ACPI_MODULE_NAME("utglobal")
  51
  52 /*******************************************************************************
  53  *
  54  * Static global variable initialization.
  55  *
  56  ******************************************************************************/
  57 /*
  58  * We want the debug switches statically initialized so they
  59  * are already set when the debugger is entered.
  60  */
  61 /* Debug switch - level and trace mask */
  62 u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
  63
  64 /* Debug switch - layer (component) mask */
  65
  66 u32 acpi_dbg_layer = 0;
  67 u32 acpi_gbl_nesting_level = 0;
  68
  69 /* Debugger globals */
  70
  71 u8 acpi_gbl_db_terminate_threads = FALSE;
  72 u8 acpi_gbl_abort_method = FALSE;
  73 u8 acpi_gbl_method_executing = FALSE;
  74
  75 /* System flags */
  76
  77 u32 acpi_gbl_startup_flags = 0;
  78
  79 /* System starts uninitialized */
  80
  81 u8 acpi_gbl_shutdown = TRUE;
  82
  83 const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
  84         "\\_S0_",
  85         "\\_S1_",
  86         "\\_S2_",
  87         "\\_S3_",
  88         "\\_S4_",
  89         "\\_S5_"
  90 };
  91
  92 const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS] = {
  93         "_S0W",
  94         "_S1W",
  95         "_S2W",
  96         "_S3W",
  97         "_S4W"
  98 };
  99
 100 const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS] = {
 101         "_S1D",
 102         "_S2D",
 103         "_S3D",
 104         "_S4D"
 105 };
 106
 107 /*******************************************************************************
 108  *
 109  * Namespace globals
 110  *
 111  ******************************************************************************/
 112 /*
 113  * Predefined ACPI Names (Built-in to the Interpreter)
 114  *
 115  * NOTES:
 116  * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
 117  *    during the initialization sequence.
 118  * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
 119  *    perform a Notify() operation on it. 09/2010: Changed to type Device.
 120  *    This still allows notifies, but does not confuse host code that
 121  *    searches for valid thermal_zone objects.
 122  */
 123 const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
 124         {"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
 125         {"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 126         {"_SB_", ACPI_TYPE_DEVICE, NULL},
 127         {"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 128         {"_TZ_", ACPI_TYPE_DEVICE, NULL},
 129         {"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
 130         {"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
 131         {"_GL_", ACPI_TYPE_MUTEX, (char *)1},
 132
 133 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
 134         {"_OSI", ACPI_TYPE_METHOD, (char *)1},
 135 #endif
 136
 137         /* Table terminator */
 138
 139         {NULL, ACPI_TYPE_ANY, NULL}
 140 };
 141
 142 /******************************************************************************
 143  *
 144  * Event and Hardware globals
 145  *
 146  ******************************************************************************/
 147
 148 struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
 149         /* Name                                     Parent Register             Register Bit Position                   Register Bit Mask       */
 150
 151         /* ACPI_BITREG_TIMER_STATUS         */ {ACPI_REGISTER_PM1_STATUS,
 152                                                 ACPI_BITPOSITION_TIMER_STATUS,
 153                                                 ACPI_BITMASK_TIMER_STATUS},
 154         /* ACPI_BITREG_BUS_MASTER_STATUS    */ {ACPI_REGISTER_PM1_STATUS,
 155                                                 ACPI_BITPOSITION_BUS_MASTER_STATUS,
 156                                                 ACPI_BITMASK_BUS_MASTER_STATUS},
 157         /* ACPI_BITREG_GLOBAL_LOCK_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 158                                                 ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,
 159                                                 ACPI_BITMASK_GLOBAL_LOCK_STATUS},
 160         /* ACPI_BITREG_POWER_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 161                                                 ACPI_BITPOSITION_POWER_BUTTON_STATUS,
 162                                                 ACPI_BITMASK_POWER_BUTTON_STATUS},
 163         /* ACPI_BITREG_SLEEP_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 164                                                 ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,
 165                                                 ACPI_BITMASK_SLEEP_BUTTON_STATUS},
 166         /* ACPI_BITREG_RT_CLOCK_STATUS      */ {ACPI_REGISTER_PM1_STATUS,
 167                                                 ACPI_BITPOSITION_RT_CLOCK_STATUS,
 168                                                 ACPI_BITMASK_RT_CLOCK_STATUS},
 169         /* ACPI_BITREG_WAKE_STATUS          */ {ACPI_REGISTER_PM1_STATUS,
 170                                                 ACPI_BITPOSITION_WAKE_STATUS,
 171                                                 ACPI_BITMASK_WAKE_STATUS},
 172         /* ACPI_BITREG_PCIEXP_WAKE_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 173                                                 ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
 174                                                 ACPI_BITMASK_PCIEXP_WAKE_STATUS},
 175
 176         /* ACPI_BITREG_TIMER_ENABLE         */ {ACPI_REGISTER_PM1_ENABLE,
 177                                                 ACPI_BITPOSITION_TIMER_ENABLE,
 178                                                 ACPI_BITMASK_TIMER_ENABLE},
 179         /* ACPI_BITREG_GLOBAL_LOCK_ENABLE   */ {ACPI_REGISTER_PM1_ENABLE,
 180                                                 ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,
 181                                                 ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 182         /* ACPI_BITREG_POWER_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 183                                                 ACPI_BITPOSITION_POWER_BUTTON_ENABLE,
 184                                                 ACPI_BITMASK_POWER_BUTTON_ENABLE},
 185         /* ACPI_BITREG_SLEEP_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 186                                                 ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,
 187                                                 ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 188         /* ACPI_BITREG_RT_CLOCK_ENABLE      */ {ACPI_REGISTER_PM1_ENABLE,
 189                                                 ACPI_BITPOSITION_RT_CLOCK_ENABLE,
 190                                                 ACPI_BITMASK_RT_CLOCK_ENABLE},
 191         /* ACPI_BITREG_PCIEXP_WAKE_DISABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 192                                                 ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
 193                                                 ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
 194
 195         /* ACPI_BITREG_SCI_ENABLE           */ {ACPI_REGISTER_PM1_CONTROL,
 196                                                 ACPI_BITPOSITION_SCI_ENABLE,
 197                                                 ACPI_BITMASK_SCI_ENABLE},
 198         /* ACPI_BITREG_BUS_MASTER_RLD       */ {ACPI_REGISTER_PM1_CONTROL,
 199                                                 ACPI_BITPOSITION_BUS_MASTER_RLD,
 200                                                 ACPI_BITMASK_BUS_MASTER_RLD},
 201         /* ACPI_BITREG_GLOBAL_LOCK_RELEASE  */ {ACPI_REGISTER_PM1_CONTROL,
 202                                                 ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,
 203                                                 ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
 204         /* ACPI_BITREG_SLEEP_TYPE           */ {ACPI_REGISTER_PM1_CONTROL,
 205                                                 ACPI_BITPOSITION_SLEEP_TYPE,
 206                                                 ACPI_BITMASK_SLEEP_TYPE},
 207         /* ACPI_BITREG_SLEEP_ENABLE         */ {ACPI_REGISTER_PM1_CONTROL,
 208                                                 ACPI_BITPOSITION_SLEEP_ENABLE,
 209                                                 ACPI_BITMASK_SLEEP_ENABLE},
 210
 211         /* ACPI_BITREG_ARB_DIS              */ {ACPI_REGISTER_PM2_CONTROL,
 212                                                 ACPI_BITPOSITION_ARB_DISABLE,
 213                                                 ACPI_BITMASK_ARB_DISABLE}
 214 };
 215
 216 struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = {
 217         /* ACPI_EVENT_PMTIMER       */ {ACPI_BITREG_TIMER_STATUS,
 218                                         ACPI_BITREG_TIMER_ENABLE,
 219                                         ACPI_BITMASK_TIMER_STATUS,
 220                                         ACPI_BITMASK_TIMER_ENABLE},
 221         /* ACPI_EVENT_GLOBAL        */ {ACPI_BITREG_GLOBAL_LOCK_STATUS,
 222                                         ACPI_BITREG_GLOBAL_LOCK_ENABLE,
 223                                         ACPI_BITMASK_GLOBAL_LOCK_STATUS,
 224                                         ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 225         /* ACPI_EVENT_POWER_BUTTON  */ {ACPI_BITREG_POWER_BUTTON_STATUS,
 226                                         ACPI_BITREG_POWER_BUTTON_ENABLE,
 227                                         ACPI_BITMASK_POWER_BUTTON_STATUS,
 228                                         ACPI_BITMASK_POWER_BUTTON_ENABLE},
 229         /* ACPI_EVENT_SLEEP_BUTTON  */ {ACPI_BITREG_SLEEP_BUTTON_STATUS,
 230                                         ACPI_BITREG_SLEEP_BUTTON_ENABLE,
 231                                         ACPI_BITMASK_SLEEP_BUTTON_STATUS,
 232                                         ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 233         /* ACPI_EVENT_RTC           */ {ACPI_BITREG_RT_CLOCK_STATUS,
 234                                         ACPI_BITREG_RT_CLOCK_ENABLE,
 235                                         ACPI_BITMASK_RT_CLOCK_STATUS,
 236                                         ACPI_BITMASK_RT_CLOCK_ENABLE},
 237 };
 238
 239 /*******************************************************************************
 240  *
 241  * FUNCTION:    acpi_ut_init_globals
 242  *
 243  * PARAMETERS:  None
 244  *
 245  * RETURN:      Status
 246  *
 247  * DESCRIPTION: Init library globals.  All globals that require specific
 248  *              initialization should be initialized here!
 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         /* Mutex locked flags */
 267
 268         for (i = 0; i < ACPI_NUM_MUTEX; i++) {
 269                 acpi_gbl_mutex_info[i].mutex = NULL;
 270                 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
 271                 acpi_gbl_mutex_info[i].use_count = 0;
 272         }
 273
 274         for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
 275                 acpi_gbl_owner_id_mask[i] = 0;
 276         }
 277
 278         /* Last owner_iD is never valid */
 279
 280         acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
 281
 282         /* GPE support */
 283
 284         acpi_gbl_gpe_xrupt_list_head = NULL;
 285         acpi_gbl_gpe_fadt_blocks[0] = NULL;
 286         acpi_gbl_gpe_fadt_blocks[1] = NULL;
 287         acpi_current_gpe_count = 0;
 288         acpi_gbl_all_gpes_initialized = FALSE;
 289
 290         /* Global handlers */
 291
 292         acpi_gbl_system_notify.handler = NULL;
 293         acpi_gbl_device_notify.handler = NULL;
 294         acpi_gbl_exception_handler = NULL;
 295         acpi_gbl_init_handler = NULL;
 296         acpi_gbl_table_handler = NULL;
 297         acpi_gbl_interface_handler = NULL;
 298         acpi_gbl_global_event_handler = NULL;
 299
 300         /* Global Lock support */
 301
 302         acpi_gbl_global_lock_semaphore = NULL;
 303         acpi_gbl_global_lock_mutex = NULL;
 304         acpi_gbl_global_lock_acquired = FALSE;
 305         acpi_gbl_global_lock_handle = 0;
 306         acpi_gbl_global_lock_present = FALSE;
 307
 308         /* Miscellaneous variables */
 309
 310         acpi_gbl_DSDT = NULL;
 311         acpi_gbl_cm_single_step = FALSE;
 312         acpi_gbl_db_terminate_threads = FALSE;
 313         acpi_gbl_shutdown = FALSE;
 314         acpi_gbl_ns_lookup_count = 0;
 315         acpi_gbl_ps_find_count = 0;
 316         acpi_gbl_acpi_hardware_present = TRUE;
 317         acpi_gbl_last_owner_id_index = 0;
 318         acpi_gbl_next_owner_id_offset = 0;
 319         acpi_gbl_trace_method_name = 0;
 320         acpi_gbl_trace_dbg_level = 0;
 321         acpi_gbl_trace_dbg_layer = 0;
 322         acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
 323         acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
 324         acpi_gbl_osi_data = 0;
 325         acpi_gbl_osi_mutex = NULL;
 326         acpi_gbl_reg_methods_executed = FALSE;
 327
 328         /* Hardware oriented */
 329
 330         acpi_gbl_events_initialized = FALSE;
 331         acpi_gbl_system_awake_and_running = TRUE;
 332
 333         /* Namespace */
 334
 335         acpi_gbl_module_code_list = NULL;
 336         acpi_gbl_root_node = NULL;
 337         acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
 338         acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
 339         acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
 340         acpi_gbl_root_node_struct.parent = NULL;
 341         acpi_gbl_root_node_struct.child = NULL;
 342         acpi_gbl_root_node_struct.peer = NULL;
 343         acpi_gbl_root_node_struct.object = NULL;
 344
 345 #ifdef ACPI_DEBUG_OUTPUT
 346         acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
 347 #endif
 348
 349 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 350         acpi_gbl_display_final_mem_stats = FALSE;
 351 #endif
 352
 353         return_ACPI_STATUS(AE_OK);
 354 }
 355
 356 ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
 357 ACPI_EXPORT_SYMBOL(acpi_dbg_level)
 358 ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
 359 ACPI_EXPORT_SYMBOL(acpi_current_gpe_count)