drivers/acpi/acpica/utinit.c

   1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
   2 /******************************************************************************
   3  *
   4  * Module Name: utinit - Common ACPI subsystem initialization
   5  *
   6  * Copyright (C) 2000 - 2018, Intel Corp.
   7  *
   8  *****************************************************************************/
   9
  10 #include <acpi/acpi.h>
  11 #include "accommon.h"
  12 #include "acnamesp.h"
  13 #include "acevents.h"
  14 #include "actables.h"
  15
  16 #define _COMPONENT          ACPI_UTILITIES
  17 ACPI_MODULE_NAME("utinit")
  18
  19 /* Local prototypes */
  20 static void acpi_ut_terminate(void);
  21
  22 #if (!ACPI_REDUCED_HARDWARE)
  23
  24 static void acpi_ut_free_gpe_lists(void);
  25
  26 #else
  27
  28 #define acpi_ut_free_gpe_lists()
  29 #endif                          /* !ACPI_REDUCED_HARDWARE */
  30
  31 #if (!ACPI_REDUCED_HARDWARE)
  32 /******************************************************************************
  33  *
  34  * FUNCTION:    acpi_ut_free_gpe_lists
  35  *
  36  * PARAMETERS:  none
  37  *
  38  * RETURN:      none
  39  *
  40  * DESCRIPTION: Free global GPE lists
  41  *
  42  ******************************************************************************/
  43
  44 static void acpi_ut_free_gpe_lists(void)
  45 {
  46         struct acpi_gpe_block_info *gpe_block;
  47         struct acpi_gpe_block_info *next_gpe_block;
  48         struct acpi_gpe_xrupt_info *gpe_xrupt_info;
  49         struct acpi_gpe_xrupt_info *next_gpe_xrupt_info;
  50
  51         /* Free global GPE blocks and related info structures */
  52
  53         gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
  54         while (gpe_xrupt_info) {
  55                 gpe_block = gpe_xrupt_info->gpe_block_list_head;
  56                 while (gpe_block) {
  57                         next_gpe_block = gpe_block->next;
  58                         ACPI_FREE(gpe_block->event_info);
  59                         ACPI_FREE(gpe_block->register_info);
  60                         ACPI_FREE(gpe_block);
  61
  62                         gpe_block = next_gpe_block;
  63                 }
  64                 next_gpe_xrupt_info = gpe_xrupt_info->next;
  65                 ACPI_FREE(gpe_xrupt_info);
  66                 gpe_xrupt_info = next_gpe_xrupt_info;
  67         }
  68 }
  69 #endif                          /* !ACPI_REDUCED_HARDWARE */
  70
  71 /*******************************************************************************
  72  *
  73  * FUNCTION:    acpi_ut_init_globals
  74  *
  75  * PARAMETERS:  None
  76  *
  77  * RETURN:      Status
  78  *
  79  * DESCRIPTION: Initialize ACPICA globals. All globals that require specific
  80  *              initialization should be initialized here. This allows for
  81  *              a warm restart.
  82  *
  83  ******************************************************************************/
  84
  85 acpi_status acpi_ut_init_globals(void)
  86 {
  87         acpi_status status;
  88         u32 i;
  89
  90         ACPI_FUNCTION_TRACE(ut_init_globals);
  91
  92         /* Create all memory caches */
  93
  94         status = acpi_ut_create_caches();
  95         if (ACPI_FAILURE(status)) {
  96                 return_ACPI_STATUS(status);
  97         }
  98
  99         /* Address Range lists */
 100
 101         for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) {
 102                 acpi_gbl_address_range_list[i] = NULL;
 103         }
 104
 105         /* Mutex locked flags */
 106
 107         for (i = 0; i < ACPI_NUM_MUTEX; i++) {
 108                 acpi_gbl_mutex_info[i].mutex = NULL;
 109                 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
 110                 acpi_gbl_mutex_info[i].use_count = 0;
 111         }
 112
 113         for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
 114                 acpi_gbl_owner_id_mask[i] = 0;
 115         }
 116
 117         /* Last owner_ID is never valid */
 118
 119         acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
 120
 121         /* Event counters */
 122
 123         acpi_method_count = 0;
 124         acpi_sci_count = 0;
 125         acpi_gpe_count = 0;
 126
 127         for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
 128                 acpi_fixed_event_count[i] = 0;
 129         }
 130
 131 #if (!ACPI_REDUCED_HARDWARE)
 132
 133         /* GPE/SCI support */
 134
 135         acpi_gbl_all_gpes_initialized = FALSE;
 136         acpi_gbl_gpe_xrupt_list_head = NULL;
 137         acpi_gbl_gpe_fadt_blocks[0] = NULL;
 138         acpi_gbl_gpe_fadt_blocks[1] = NULL;
 139         acpi_current_gpe_count = 0;
 140
 141         acpi_gbl_global_event_handler = NULL;
 142         acpi_gbl_sci_handler_list = NULL;
 143
 144 #endif                          /* !ACPI_REDUCED_HARDWARE */
 145
 146         /* Global handlers */
 147
 148         acpi_gbl_global_notify[0].handler = NULL;
 149         acpi_gbl_global_notify[1].handler = NULL;
 150         acpi_gbl_exception_handler = NULL;
 151         acpi_gbl_init_handler = NULL;
 152         acpi_gbl_table_handler = NULL;
 153         acpi_gbl_interface_handler = NULL;
 154
 155         /* Global Lock support */
 156
 157         acpi_gbl_global_lock_semaphore = NULL;
 158         acpi_gbl_global_lock_mutex = NULL;
 159         acpi_gbl_global_lock_acquired = FALSE;
 160         acpi_gbl_global_lock_handle = 0;
 161         acpi_gbl_global_lock_present = FALSE;
 162
 163         /* Miscellaneous variables */
 164
 165         acpi_gbl_DSDT = NULL;
 166         acpi_gbl_cm_single_step = FALSE;
 167         acpi_gbl_shutdown = FALSE;
 168         acpi_gbl_ns_lookup_count = 0;
 169         acpi_gbl_ps_find_count = 0;
 170         acpi_gbl_acpi_hardware_present = TRUE;
 171         acpi_gbl_last_owner_id_index = 0;
 172         acpi_gbl_next_owner_id_offset = 0;
 173         acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
 174         acpi_gbl_osi_mutex = NULL;
 175
 176         /* Hardware oriented */
 177
 178         acpi_gbl_events_initialized = FALSE;
 179         acpi_gbl_system_awake_and_running = TRUE;
 180
 181         /* Namespace */
 182
 183         acpi_gbl_module_code_list = NULL;
 184         acpi_gbl_root_node = NULL;
 185         acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
 186         acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
 187         acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
 188         acpi_gbl_root_node_struct.parent = NULL;
 189         acpi_gbl_root_node_struct.child = NULL;
 190         acpi_gbl_root_node_struct.peer = NULL;
 191         acpi_gbl_root_node_struct.object = NULL;
 192
 193 #ifdef ACPI_DISASSEMBLER
 194         acpi_gbl_external_list = NULL;
 195         acpi_gbl_num_external_methods = 0;
 196         acpi_gbl_resolved_external_methods = 0;
 197 #endif
 198
 199 #ifdef ACPI_DEBUG_OUTPUT
 200         acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
 201 #endif
 202
 203 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 204         acpi_gbl_display_final_mem_stats = FALSE;
 205         acpi_gbl_disable_mem_tracking = FALSE;
 206 #endif
 207
 208         return_ACPI_STATUS(AE_OK);
 209 }
 210
 211 /******************************************************************************
 212  *
 213  * FUNCTION:    acpi_ut_terminate
 214  *
 215  * PARAMETERS:  none
 216  *
 217  * RETURN:      none
 218  *
 219  * DESCRIPTION: Free global memory
 220  *
 221  ******************************************************************************/
 222
 223 static void acpi_ut_terminate(void)
 224 {
 225         ACPI_FUNCTION_TRACE(ut_terminate);
 226
 227         acpi_ut_free_gpe_lists();
 228         acpi_ut_delete_address_lists();
 229         return_VOID;
 230 }
 231
 232 /*******************************************************************************
 233  *
 234  * FUNCTION:    acpi_ut_subsystem_shutdown
 235  *
 236  * PARAMETERS:  None
 237  *
 238  * RETURN:      None
 239  *
 240  * DESCRIPTION: Shutdown the various components. Do not delete the mutex
 241  *              objects here, because the AML debugger may be still running.
 242  *
 243  ******************************************************************************/
 244
 245 void acpi_ut_subsystem_shutdown(void)
 246 {
 247         ACPI_FUNCTION_TRACE(ut_subsystem_shutdown);
 248
 249         /* Just exit if subsystem is already shutdown */
 250
 251         if (acpi_gbl_shutdown) {
 252                 ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
 253                 return_VOID;
 254         }
 255
 256         /* Subsystem appears active, go ahead and shut it down */
 257
 258         acpi_gbl_shutdown = TRUE;
 259         acpi_gbl_startup_flags = 0;
 260         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
 261
 262 #ifndef ACPI_ASL_COMPILER
 263
 264         /* Close the acpi_event Handling */
 265
 266         acpi_ev_terminate();
 267
 268         /* Delete any dynamic _OSI interfaces */
 269
 270         acpi_ut_interface_terminate();
 271 #endif
 272
 273         /* Close the Namespace */
 274
 275         acpi_ns_terminate();
 276
 277         /* Delete the ACPI tables */
 278
 279         acpi_tb_terminate();
 280
 281         /* Close the globals */
 282
 283         acpi_ut_terminate();
 284
 285         /* Purge the local caches */
 286
 287         (void)acpi_ut_delete_caches();
 288         return_VOID;
 289 }