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1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.02/******************************************************************************3 *4 * Module Name: utinit - Common ACPI subsystem initialization5 *6 * Copyright (C) 2000 - 2023, 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_UTILITIES17ACPI_MODULE_NAME("utinit")18 19/* Local prototypes */20static void acpi_ut_terminate(void);21 22#if (!ACPI_REDUCED_HARDWARE)23 24static void acpi_ut_free_gpe_lists(void);25 26#else27 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_lists35 *36 * PARAMETERS: none37 *38 * RETURN: none39 *40 * DESCRIPTION: Free global GPE lists41 *42 ******************************************************************************/43 44static 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_globals74 *75 * PARAMETERS: None76 *77 * RETURN: Status78 *79 * DESCRIPTION: Initialize ACPICA globals. All globals that require specific80 * initialization should be initialized here. This allows for81 * a warm restart.82 *83 ******************************************************************************/84 85acpi_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 = ACPI_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_root_node = NULL;184 acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;185 acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;186 acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;187 acpi_gbl_root_node_struct.parent = NULL;188 acpi_gbl_root_node_struct.child = NULL;189 acpi_gbl_root_node_struct.peer = NULL;190 acpi_gbl_root_node_struct.object = NULL;191 192#ifdef ACPI_DISASSEMBLER193 acpi_gbl_external_list = NULL;194 acpi_gbl_num_external_methods = 0;195 acpi_gbl_resolved_external_methods = 0;196#endif197 198#ifdef ACPI_DEBUG_OUTPUT199 acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);200#endif201 202#ifdef ACPI_DBG_TRACK_ALLOCATIONS203 acpi_gbl_display_final_mem_stats = FALSE;204 acpi_gbl_disable_mem_tracking = FALSE;205#endif206 207 return_ACPI_STATUS(AE_OK);208}209 210/******************************************************************************211 *212 * FUNCTION: acpi_ut_terminate213 *214 * PARAMETERS: none215 *216 * RETURN: none217 *218 * DESCRIPTION: Free global memory219 *220 ******************************************************************************/221 222static void acpi_ut_terminate(void)223{224 ACPI_FUNCTION_TRACE(ut_terminate);225 226 acpi_ut_free_gpe_lists();227 acpi_ut_delete_address_lists();228 return_VOID;229}230 231/*******************************************************************************232 *233 * FUNCTION: acpi_ut_subsystem_shutdown234 *235 * PARAMETERS: None236 *237 * RETURN: None238 *239 * DESCRIPTION: Shutdown the various components. Do not delete the mutex240 * objects here, because the AML debugger may be still running.241 *242 ******************************************************************************/243 244void acpi_ut_subsystem_shutdown(void)245{246 ACPI_FUNCTION_TRACE(ut_subsystem_shutdown);247 248 /* Just exit if subsystem is already shutdown */249 250 if (acpi_gbl_shutdown) {251 ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));252 return_VOID;253 }254 255 /* Subsystem appears active, go ahead and shut it down */256 257 acpi_gbl_shutdown = TRUE;258 acpi_gbl_startup_flags = 0;259 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));260 261#ifndef ACPI_ASL_COMPILER262 263 /* Close the acpi_event Handling */264 265 acpi_ev_terminate();266 267 /* Delete any dynamic _OSI interfaces */268 269 acpi_ut_interface_terminate();270#endif271 272 /* Close the Namespace */273 274 acpi_ns_terminate();275 276 /* Delete the ACPI tables */277 278 acpi_tb_terminate();279 280 /* Close the globals */281 282 acpi_ut_terminate();283 284 /* Purge the local caches */285 286 (void)acpi_ut_delete_caches();287 return_VOID;288}289