drivers/acpi/acpica/utinit.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utinit - Common ACPI subsystem initialization
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2015, 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 #include <acpi/acpi.h>
  45 #include "accommon.h"
  46 #include "acnamesp.h"
  47 #include "acevents.h"
  48 #include "actables.h"
  49
  50 #define _COMPONENT          ACPI_UTILITIES
  51 ACPI_MODULE_NAME("utinit")
  52
  53 /* Local prototypes */
  54 static void acpi_ut_terminate(void);
  55
  56 #if (!ACPI_REDUCED_HARDWARE)
  57
  58 static void acpi_ut_free_gpe_lists(void);
  59
  60 #else
  61
  62 #define acpi_ut_free_gpe_lists()
  63 #endif                          /* !ACPI_REDUCED_HARDWARE */
  64
  65 #if (!ACPI_REDUCED_HARDWARE)
  66 /******************************************************************************
  67  *
  68  * FUNCTION:    acpi_ut_free_gpe_lists
  69  *
  70  * PARAMETERS:  none
  71  *
  72  * RETURN:      none
  73  *
  74  * DESCRIPTION: Free global GPE lists
  75  *
  76  ******************************************************************************/
  77
  78 static void acpi_ut_free_gpe_lists(void)
  79 {
  80         struct acpi_gpe_block_info *gpe_block;
  81         struct acpi_gpe_block_info *next_gpe_block;
  82         struct acpi_gpe_xrupt_info *gpe_xrupt_info;
  83         struct acpi_gpe_xrupt_info *next_gpe_xrupt_info;
  84
  85         /* Free global GPE blocks and related info structures */
  86
  87         gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
  88         while (gpe_xrupt_info) {
  89                 gpe_block = gpe_xrupt_info->gpe_block_list_head;
  90                 while (gpe_block) {
  91                         next_gpe_block = gpe_block->next;
  92                         ACPI_FREE(gpe_block->event_info);
  93                         ACPI_FREE(gpe_block->register_info);
  94                         ACPI_FREE(gpe_block);
  95
  96                         gpe_block = next_gpe_block;
  97                 }
  98                 next_gpe_xrupt_info = gpe_xrupt_info->next;
  99                 ACPI_FREE(gpe_xrupt_info);
 100                 gpe_xrupt_info = next_gpe_xrupt_info;
 101         }
 102 }
 103 #endif                          /* !ACPI_REDUCED_HARDWARE */
 104
 105 /*******************************************************************************
 106  *
 107  * FUNCTION:    acpi_ut_init_globals
 108  *
 109  * PARAMETERS:  None
 110  *
 111  * RETURN:      Status
 112  *
 113  * DESCRIPTION: Initialize ACPICA globals. All globals that require specific
 114  *              initialization should be initialized here. This allows for
 115  *              a warm restart.
 116  *
 117  ******************************************************************************/
 118
 119 acpi_status acpi_ut_init_globals(void)
 120 {
 121         acpi_status status;
 122         u32 i;
 123
 124         ACPI_FUNCTION_TRACE(ut_init_globals);
 125
 126         /* Create all memory caches */
 127
 128         status = acpi_ut_create_caches();
 129         if (ACPI_FAILURE(status)) {
 130                 return_ACPI_STATUS(status);
 131         }
 132
 133         /* Address Range lists */
 134
 135         for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) {
 136                 acpi_gbl_address_range_list[i] = NULL;
 137         }
 138
 139         /* Mutex locked flags */
 140
 141         for (i = 0; i < ACPI_NUM_MUTEX; i++) {
 142                 acpi_gbl_mutex_info[i].mutex = NULL;
 143                 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
 144                 acpi_gbl_mutex_info[i].use_count = 0;
 145         }
 146
 147         for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
 148                 acpi_gbl_owner_id_mask[i] = 0;
 149         }
 150
 151         /* Last owner_ID is never valid */
 152
 153         acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
 154
 155         /* Event counters */
 156
 157         acpi_method_count = 0;
 158         acpi_sci_count = 0;
 159         acpi_gpe_count = 0;
 160
 161         for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
 162                 acpi_fixed_event_count[i] = 0;
 163         }
 164
 165 #if (!ACPI_REDUCED_HARDWARE)
 166
 167         /* GPE/SCI support */
 168
 169         acpi_gbl_all_gpes_initialized = FALSE;
 170         acpi_gbl_gpe_xrupt_list_head = NULL;
 171         acpi_gbl_gpe_fadt_blocks[0] = NULL;
 172         acpi_gbl_gpe_fadt_blocks[1] = NULL;
 173         acpi_current_gpe_count = 0;
 174
 175         acpi_gbl_global_event_handler = NULL;
 176         acpi_gbl_sci_handler_list = NULL;
 177
 178 #endif                          /* !ACPI_REDUCED_HARDWARE */
 179
 180         /* Global handlers */
 181
 182         acpi_gbl_global_notify[0].handler = NULL;
 183         acpi_gbl_global_notify[1].handler = NULL;
 184         acpi_gbl_exception_handler = NULL;
 185         acpi_gbl_init_handler = NULL;
 186         acpi_gbl_table_handler = NULL;
 187         acpi_gbl_interface_handler = NULL;
 188
 189         /* Global Lock support */
 190
 191         acpi_gbl_global_lock_semaphore = NULL;
 192         acpi_gbl_global_lock_mutex = NULL;
 193         acpi_gbl_global_lock_acquired = FALSE;
 194         acpi_gbl_global_lock_handle = 0;
 195         acpi_gbl_global_lock_present = FALSE;
 196
 197         /* Miscellaneous variables */
 198
 199         acpi_gbl_DSDT = NULL;
 200         acpi_gbl_cm_single_step = FALSE;
 201         acpi_gbl_shutdown = FALSE;
 202         acpi_gbl_ns_lookup_count = 0;
 203         acpi_gbl_ps_find_count = 0;
 204         acpi_gbl_acpi_hardware_present = TRUE;
 205         acpi_gbl_last_owner_id_index = 0;
 206         acpi_gbl_next_owner_id_offset = 0;
 207         acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
 208         acpi_gbl_osi_mutex = NULL;
 209         acpi_gbl_reg_methods_executed = FALSE;
 210         acpi_gbl_max_loop_iterations = 0xFFFF;
 211
 212         /* Hardware oriented */
 213
 214         acpi_gbl_events_initialized = FALSE;
 215         acpi_gbl_system_awake_and_running = TRUE;
 216
 217         /* Namespace */
 218
 219         acpi_gbl_module_code_list = NULL;
 220         acpi_gbl_root_node = NULL;
 221         acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
 222         acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
 223         acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
 224         acpi_gbl_root_node_struct.parent = NULL;
 225         acpi_gbl_root_node_struct.child = NULL;
 226         acpi_gbl_root_node_struct.peer = NULL;
 227         acpi_gbl_root_node_struct.object = NULL;
 228
 229 #ifdef ACPI_DISASSEMBLER
 230         acpi_gbl_external_list = NULL;
 231         acpi_gbl_num_external_methods = 0;
 232         acpi_gbl_resolved_external_methods = 0;
 233 #endif
 234
 235 #ifdef ACPI_DEBUG_OUTPUT
 236         acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
 237 #endif
 238
 239 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 240         acpi_gbl_display_final_mem_stats = FALSE;
 241         acpi_gbl_disable_mem_tracking = FALSE;
 242 #endif
 243
 244         return_ACPI_STATUS(AE_OK);
 245 }
 246
 247 /******************************************************************************
 248  *
 249  * FUNCTION:    acpi_ut_terminate
 250  *
 251  * PARAMETERS:  none
 252  *
 253  * RETURN:      none
 254  *
 255  * DESCRIPTION: Free global memory
 256  *
 257  ******************************************************************************/
 258
 259 static void acpi_ut_terminate(void)
 260 {
 261         ACPI_FUNCTION_TRACE(ut_terminate);
 262
 263         acpi_ut_free_gpe_lists();
 264         acpi_ut_delete_address_lists();
 265         return_VOID;
 266 }
 267
 268 /*******************************************************************************
 269  *
 270  * FUNCTION:    acpi_ut_subsystem_shutdown
 271  *
 272  * PARAMETERS:  None
 273  *
 274  * RETURN:      None
 275  *
 276  * DESCRIPTION: Shutdown the various components. Do not delete the mutex
 277  *              objects here, because the AML debugger may be still running.
 278  *
 279  ******************************************************************************/
 280
 281 void acpi_ut_subsystem_shutdown(void)
 282 {
 283         ACPI_FUNCTION_TRACE(ut_subsystem_shutdown);
 284
 285         /* Just exit if subsystem is already shutdown */
 286
 287         if (acpi_gbl_shutdown) {
 288                 ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
 289                 return_VOID;
 290         }
 291
 292         /* Subsystem appears active, go ahead and shut it down */
 293
 294         acpi_gbl_shutdown = TRUE;
 295         acpi_gbl_startup_flags = 0;
 296         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
 297
 298 #ifndef ACPI_ASL_COMPILER
 299
 300         /* Close the acpi_event Handling */
 301
 302         acpi_ev_terminate();
 303
 304         /* Delete any dynamic _OSI interfaces */
 305
 306         acpi_ut_interface_terminate();
 307 #endif
 308
 309         /* Close the Namespace */
 310
 311         acpi_ns_terminate();
 312
 313         /* Delete the ACPI tables */
 314
 315         acpi_tb_terminate();
 316
 317         /* Close the globals */
 318
 319         acpi_ut_terminate();
 320
 321         /* Purge the local caches */
 322
 323         (void)acpi_ut_delete_caches();
 324         return_VOID;
 325 }