acpi/acpica/utinit.c

0001 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
0002 /******************************************************************************
0003  *
0004  * Module Name: utinit - Common ACPI subsystem initialization
0005  *
0006  * Copyright (C) 2000 - 2022, Intel Corp.
0007  *
0008  *****************************************************************************/
0009
0010 #include <acpi/acpi.h>
0011 #include "accommon.h"
0012 #include "acnamesp.h"
0013 #include "acevents.h"
0014 #include "actables.h"
0015
0016 #define _COMPONENT          ACPI_UTILITIES
0017 ACPI_MODULE_NAME("utinit")
0018
0019 /* Local prototypes */
0020 static void acpi_ut_terminate(void);
0021
0022 #if (!ACPI_REDUCED_HARDWARE)
0023
0024 static void acpi_ut_free_gpe_lists(void);
0025
0026 #else
0027
0028 #define acpi_ut_free_gpe_lists()
0029 #endif              /* !ACPI_REDUCED_HARDWARE */
0030
0031 #if (!ACPI_REDUCED_HARDWARE)
0032 /******************************************************************************
0033  *
0034  * FUNCTION:    acpi_ut_free_gpe_lists
0035  *
0036  * PARAMETERS:  none
0037  *
0038  * RETURN:      none
0039  *
0040  * DESCRIPTION: Free global GPE lists
0041  *
0042  ******************************************************************************/
0043
0044 static void acpi_ut_free_gpe_lists(void)
0045 {
0046     struct acpi_gpe_block_info *gpe_block;
0047     struct acpi_gpe_block_info *next_gpe_block;
0048     struct acpi_gpe_xrupt_info *gpe_xrupt_info;
0049     struct acpi_gpe_xrupt_info *next_gpe_xrupt_info;
0050
0051     /* Free global GPE blocks and related info structures */
0052
0053     gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
0054     while (gpe_xrupt_info) {
0055         gpe_block = gpe_xrupt_info->gpe_block_list_head;
0056         while (gpe_block) {
0057             next_gpe_block = gpe_block->next;
0058             ACPI_FREE(gpe_block->event_info);
0059             ACPI_FREE(gpe_block->register_info);
0060             ACPI_FREE(gpe_block);
0061
0062             gpe_block = next_gpe_block;
0063         }
0064         next_gpe_xrupt_info = gpe_xrupt_info->next;
0065         ACPI_FREE(gpe_xrupt_info);
0066         gpe_xrupt_info = next_gpe_xrupt_info;
0067     }
0068 }
0069 #endif              /* !ACPI_REDUCED_HARDWARE */
0070
0071 /*******************************************************************************
0072  *
0073  * FUNCTION:    acpi_ut_init_globals
0074  *
0075  * PARAMETERS:  None
0076  *
0077  * RETURN:      Status
0078  *
0079  * DESCRIPTION: Initialize ACPICA globals. All globals that require specific
0080  *              initialization should be initialized here. This allows for
0081  *              a warm restart.
0082  *
0083  ******************************************************************************/
0084
0085 acpi_status acpi_ut_init_globals(void)
0086 {
0087     acpi_status status;
0088     u32 i;
0089
0090     ACPI_FUNCTION_TRACE(ut_init_globals);
0091
0092     /* Create all memory caches */
0093
0094     status = acpi_ut_create_caches();
0095     if (ACPI_FAILURE(status)) {
0096         return_ACPI_STATUS(status);
0097     }
0098
0099     /* Address Range lists */
0100
0101     for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) {
0102         acpi_gbl_address_range_list[i] = NULL;
0103     }
0104
0105     /* Mutex locked flags */
0106
0107     for (i = 0; i < ACPI_NUM_MUTEX; i++) {
0108         acpi_gbl_mutex_info[i].mutex = NULL;
0109         acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
0110         acpi_gbl_mutex_info[i].use_count = 0;
0111     }
0112
0113     for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
0114         acpi_gbl_owner_id_mask[i] = 0;
0115     }
0116
0117     /* Last owner_ID is never valid */
0118
0119     acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
0120
0121     /* Event counters */
0122
0123     acpi_method_count = 0;
0124     acpi_sci_count = 0;
0125     acpi_gpe_count = 0;
0126
0127     for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
0128         acpi_fixed_event_count[i] = 0;
0129     }
0130
0131 #if (!ACPI_REDUCED_HARDWARE)
0132
0133     /* GPE/SCI support */
0134
0135     acpi_gbl_all_gpes_initialized = FALSE;
0136     acpi_gbl_gpe_xrupt_list_head = NULL;
0137     acpi_gbl_gpe_fadt_blocks[0] = NULL;
0138     acpi_gbl_gpe_fadt_blocks[1] = NULL;
0139     acpi_current_gpe_count = 0;
0140
0141     acpi_gbl_global_event_handler = NULL;
0142     acpi_gbl_sci_handler_list = NULL;
0143
0144 #endif              /* !ACPI_REDUCED_HARDWARE */
0145
0146     /* Global handlers */
0147
0148     acpi_gbl_global_notify[0].handler = NULL;
0149     acpi_gbl_global_notify[1].handler = NULL;
0150     acpi_gbl_exception_handler = NULL;
0151     acpi_gbl_init_handler = NULL;
0152     acpi_gbl_table_handler = NULL;
0153     acpi_gbl_interface_handler = NULL;
0154
0155     /* Global Lock support */
0156
0157     acpi_gbl_global_lock_semaphore = NULL;
0158     acpi_gbl_global_lock_mutex = NULL;
0159     acpi_gbl_global_lock_acquired = FALSE;
0160     acpi_gbl_global_lock_handle = 0;
0161     acpi_gbl_global_lock_present = FALSE;
0162
0163     /* Miscellaneous variables */
0164
0165     acpi_gbl_DSDT = NULL;
0166     acpi_gbl_cm_single_step = FALSE;
0167     acpi_gbl_shutdown = FALSE;
0168     acpi_gbl_ns_lookup_count = 0;
0169     acpi_gbl_ps_find_count = 0;
0170     acpi_gbl_acpi_hardware_present = TRUE;
0171     acpi_gbl_last_owner_id_index = 0;
0172     acpi_gbl_next_owner_id_offset = 0;
0173     acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
0174     acpi_gbl_osi_mutex = NULL;
0175
0176     /* Hardware oriented */
0177
0178     acpi_gbl_events_initialized = FALSE;
0179     acpi_gbl_system_awake_and_running = TRUE;
0180
0181     /* Namespace */
0182
0183     acpi_gbl_root_node = NULL;
0184     acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
0185     acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
0186     acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
0187     acpi_gbl_root_node_struct.parent = NULL;
0188     acpi_gbl_root_node_struct.child = NULL;
0189     acpi_gbl_root_node_struct.peer = NULL;
0190     acpi_gbl_root_node_struct.object = NULL;
0191
0192 #ifdef ACPI_DISASSEMBLER
0193     acpi_gbl_external_list = NULL;
0194     acpi_gbl_num_external_methods = 0;
0195     acpi_gbl_resolved_external_methods = 0;
0196 #endif
0197
0198 #ifdef ACPI_DEBUG_OUTPUT
0199     acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
0200 #endif
0201
0202 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
0203     acpi_gbl_display_final_mem_stats = FALSE;
0204     acpi_gbl_disable_mem_tracking = FALSE;
0205 #endif
0206
0207     return_ACPI_STATUS(AE_OK);
0208 }
0209
0210 /******************************************************************************
0211  *
0212  * FUNCTION:    acpi_ut_terminate
0213  *
0214  * PARAMETERS:  none
0215  *
0216  * RETURN:      none
0217  *
0218  * DESCRIPTION: Free global memory
0219  *
0220  ******************************************************************************/
0221
0222 static void acpi_ut_terminate(void)
0223 {
0224     ACPI_FUNCTION_TRACE(ut_terminate);
0225
0226     acpi_ut_free_gpe_lists();
0227     acpi_ut_delete_address_lists();
0228     return_VOID;
0229 }
0230
0231 /*******************************************************************************
0232  *
0233  * FUNCTION:    acpi_ut_subsystem_shutdown
0234  *
0235  * PARAMETERS:  None
0236  *
0237  * RETURN:      None
0238  *
0239  * DESCRIPTION: Shutdown the various components. Do not delete the mutex
0240  *              objects here, because the AML debugger may be still running.
0241  *
0242  ******************************************************************************/
0243
0244 void acpi_ut_subsystem_shutdown(void)
0245 {
0246     ACPI_FUNCTION_TRACE(ut_subsystem_shutdown);
0247
0248     /* Just exit if subsystem is already shutdown */
0249
0250     if (acpi_gbl_shutdown) {
0251         ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
0252         return_VOID;
0253     }
0254
0255     /* Subsystem appears active, go ahead and shut it down */
0256
0257     acpi_gbl_shutdown = TRUE;
0258     acpi_gbl_startup_flags = 0;
0259     ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
0260
0261 #ifndef ACPI_ASL_COMPILER
0262
0263     /* Close the acpi_event Handling */
0264
0265     acpi_ev_terminate();
0266
0267     /* Delete any dynamic _OSI interfaces */
0268
0269     acpi_ut_interface_terminate();
0270 #endif
0271
0272     /* Close the Namespace */
0273
0274     acpi_ns_terminate();
0275
0276     /* Delete the ACPI tables */
0277
0278     acpi_tb_terminate();
0279
0280     /* Close the globals */
0281
0282     acpi_ut_terminate();
0283
0284     /* Purge the local caches */
0285
0286     (void)acpi_ut_delete_caches();
0287     return_VOID;
0288 }