// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /****************************************************************************** * * Module Name: utinit - Common ACPI subsystem initialization * * Copyright (C) 2000 - 2022, Intel Corp. * *****************************************************************************/ #include <acpi/acpi.h> #include "accommon.h" #include "acnamesp.h" #include "acevents.h" #include "actables.h" #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME("utinit") /* Local prototypes */ static void acpi_ut_terminate(void); #if (!ACPI_REDUCED_HARDWARE) static void acpi_ut_free_gpe_lists(void); #else #define acpi_ut_free_gpe_lists() #endif /* !ACPI_REDUCED_HARDWARE */ #if (!ACPI_REDUCED_HARDWARE) /****************************************************************************** * * FUNCTION: acpi_ut_free_gpe_lists * * PARAMETERS: none * * RETURN: none * * DESCRIPTION: Free global GPE lists * ******************************************************************************/ static void acpi_ut_free_gpe_lists(void) { struct acpi_gpe_block_info *gpe_block; struct acpi_gpe_block_info *next_gpe_block; struct acpi_gpe_xrupt_info *gpe_xrupt_info; struct acpi_gpe_xrupt_info *next_gpe_xrupt_info; /* Free global GPE blocks and related info structures */ gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head; while (gpe_xrupt_info) { gpe_block = gpe_xrupt_info->gpe_block_list_head; while (gpe_block) { next_gpe_block = gpe_block->next; ACPI_FREE(gpe_block->event_info); ACPI_FREE(gpe_block->register_info); ACPI_FREE(gpe_block); gpe_block = next_gpe_block; } next_gpe_xrupt_info = gpe_xrupt_info->next; ACPI_FREE(gpe_xrupt_info); gpe_xrupt_info = next_gpe_xrupt_info; } } #endif /* !ACPI_REDUCED_HARDWARE */ /******************************************************************************* * * FUNCTION: acpi_ut_init_globals * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Initialize ACPICA globals. All globals that require specific * initialization should be initialized here. This allows for * a warm restart. * ******************************************************************************/ acpi_status acpi_ut_init_globals(void) { acpi_status status; u32 i; ACPI_FUNCTION_TRACE(ut_init_globals); /* Create all memory caches */ status = acpi_ut_create_caches(); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Address Range lists */ for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) { acpi_gbl_address_range_list[i] = NULL; } /* Mutex locked flags */ for (i = 0; i < ACPI_NUM_MUTEX; i++) { acpi_gbl_mutex_info[i].mutex = NULL; acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED; acpi_gbl_mutex_info[i].use_count = 0; } for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) { acpi_gbl_owner_id_mask[i] = 0; } /* Last owner_ID is never valid */ acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000; /* Event counters */ acpi_method_count = 0; acpi_sci_count = 0; acpi_gpe_count = 0; for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) { acpi_fixed_event_count[i] = 0; } #if (!ACPI_REDUCED_HARDWARE) /* GPE/SCI support */ acpi_gbl_all_gpes_initialized = FALSE; acpi_gbl_gpe_xrupt_list_head = NULL; acpi_gbl_gpe_fadt_blocks[0] = NULL; acpi_gbl_gpe_fadt_blocks[1] = NULL; acpi_current_gpe_count = 0; acpi_gbl_global_event_handler = NULL; acpi_gbl_sci_handler_list = NULL; #endif /* !ACPI_REDUCED_HARDWARE */ /* Global handlers */ acpi_gbl_global_notify[0].handler = NULL; acpi_gbl_global_notify[1].handler = NULL; acpi_gbl_exception_handler = NULL; acpi_gbl_init_handler = NULL; acpi_gbl_table_handler = NULL; acpi_gbl_interface_handler = NULL; /* Global Lock support */ acpi_gbl_global_lock_semaphore = NULL; acpi_gbl_global_lock_mutex = NULL; acpi_gbl_global_lock_acquired = FALSE; acpi_gbl_global_lock_handle = 0; acpi_gbl_global_lock_present = FALSE; /* Miscellaneous variables */ acpi_gbl_DSDT = NULL; acpi_gbl_cm_single_step = FALSE; acpi_gbl_shutdown = FALSE; acpi_gbl_ns_lookup_count = 0; acpi_gbl_ps_find_count = 0; acpi_gbl_acpi_hardware_present = TRUE; acpi_gbl_last_owner_id_index = 0; acpi_gbl_next_owner_id_offset = 0; acpi_gbl_debugger_configuration = DEBUGGER_THREADING; acpi_gbl_osi_mutex = NULL; /* Hardware oriented */ acpi_gbl_events_initialized = FALSE; acpi_gbl_system_awake_and_running = TRUE; /* Namespace */ acpi_gbl_root_node = NULL; acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME; acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED; acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE; acpi_gbl_root_node_struct.parent = NULL; acpi_gbl_root_node_struct.child = NULL; acpi_gbl_root_node_struct.peer = NULL; acpi_gbl_root_node_struct.object = NULL; #ifdef ACPI_DISASSEMBLER acpi_gbl_external_list = NULL; acpi_gbl_num_external_methods = 0; acpi_gbl_resolved_external_methods = 0; #endif #ifdef ACPI_DEBUG_OUTPUT acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX); #endif #ifdef ACPI_DBG_TRACK_ALLOCATIONS acpi_gbl_display_final_mem_stats = FALSE; acpi_gbl_disable_mem_tracking = FALSE; #endif return_ACPI_STATUS(AE_OK); } /****************************************************************************** * * FUNCTION: acpi_ut_terminate * * PARAMETERS: none * * RETURN: none * * DESCRIPTION: Free global memory * ******************************************************************************/ static void acpi_ut_terminate(void) { ACPI_FUNCTION_TRACE(ut_terminate); acpi_ut_free_gpe_lists(); acpi_ut_delete_address_lists(); return_VOID; } /******************************************************************************* * * FUNCTION: acpi_ut_subsystem_shutdown * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Shutdown the various components. Do not delete the mutex * objects here, because the AML debugger may be still running. * ******************************************************************************/ void acpi_ut_subsystem_shutdown(void) { ACPI_FUNCTION_TRACE(ut_subsystem_shutdown); /* Just exit if subsystem is already shutdown */ if (acpi_gbl_shutdown) { ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated")); return_VOID; } /* Subsystem appears active, go ahead and shut it down */ acpi_gbl_shutdown = TRUE; acpi_gbl_startup_flags = 0; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n")); #ifndef ACPI_ASL_COMPILER /* Close the acpi_event Handling */ acpi_ev_terminate(); /* Delete any dynamic _OSI interfaces */ acpi_ut_interface_terminate(); #endif /* Close the Namespace */ acpi_ns_terminate(); /* Delete the ACPI tables */ acpi_tb_terminate(); /* Close the globals */ acpi_ut_terminate(); /* Purge the local caches */ (void)acpi_ut_delete_caches(); return_VOID; }