mirror of https://gitee.com/openkylin/linux.git
289 lines
6.8 KiB
C
289 lines
6.8 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/******************************************************************************
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*
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* Module Name: utinit - Common ACPI subsystem initialization
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*
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* Copyright (C) 2000 - 2020, Intel Corp.
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*
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*****************************************************************************/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acnamesp.h"
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#include "acevents.h"
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#include "actables.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME("utinit")
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/* Local prototypes */
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static void acpi_ut_terminate(void);
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#if (!ACPI_REDUCED_HARDWARE)
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static void acpi_ut_free_gpe_lists(void);
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#else
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#define acpi_ut_free_gpe_lists()
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#endif /* !ACPI_REDUCED_HARDWARE */
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#if (!ACPI_REDUCED_HARDWARE)
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/******************************************************************************
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*
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* FUNCTION: acpi_ut_free_gpe_lists
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*
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* PARAMETERS: none
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*
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* RETURN: none
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*
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* DESCRIPTION: Free global GPE lists
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*
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******************************************************************************/
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static void acpi_ut_free_gpe_lists(void)
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{
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struct acpi_gpe_block_info *gpe_block;
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struct acpi_gpe_block_info *next_gpe_block;
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struct acpi_gpe_xrupt_info *gpe_xrupt_info;
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struct acpi_gpe_xrupt_info *next_gpe_xrupt_info;
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/* Free global GPE blocks and related info structures */
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gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
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while (gpe_xrupt_info) {
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gpe_block = gpe_xrupt_info->gpe_block_list_head;
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while (gpe_block) {
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next_gpe_block = gpe_block->next;
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ACPI_FREE(gpe_block->event_info);
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ACPI_FREE(gpe_block->register_info);
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ACPI_FREE(gpe_block);
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gpe_block = next_gpe_block;
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}
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next_gpe_xrupt_info = gpe_xrupt_info->next;
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ACPI_FREE(gpe_xrupt_info);
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gpe_xrupt_info = next_gpe_xrupt_info;
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}
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}
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#endif /* !ACPI_REDUCED_HARDWARE */
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_init_globals
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initialize ACPICA globals. All globals that require specific
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* initialization should be initialized here. This allows for
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* a warm restart.
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*
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******************************************************************************/
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acpi_status acpi_ut_init_globals(void)
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{
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acpi_status status;
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u32 i;
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ACPI_FUNCTION_TRACE(ut_init_globals);
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/* Create all memory caches */
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status = acpi_ut_create_caches();
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/* Address Range lists */
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for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) {
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acpi_gbl_address_range_list[i] = NULL;
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}
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/* Mutex locked flags */
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for (i = 0; i < ACPI_NUM_MUTEX; i++) {
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acpi_gbl_mutex_info[i].mutex = NULL;
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acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
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acpi_gbl_mutex_info[i].use_count = 0;
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}
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for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
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acpi_gbl_owner_id_mask[i] = 0;
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}
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/* Last owner_ID is never valid */
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acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
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/* Event counters */
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acpi_method_count = 0;
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acpi_sci_count = 0;
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acpi_gpe_count = 0;
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for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
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acpi_fixed_event_count[i] = 0;
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}
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#if (!ACPI_REDUCED_HARDWARE)
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/* GPE/SCI support */
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acpi_gbl_all_gpes_initialized = FALSE;
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acpi_gbl_gpe_xrupt_list_head = NULL;
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acpi_gbl_gpe_fadt_blocks[0] = NULL;
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acpi_gbl_gpe_fadt_blocks[1] = NULL;
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acpi_current_gpe_count = 0;
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acpi_gbl_global_event_handler = NULL;
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acpi_gbl_sci_handler_list = NULL;
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#endif /* !ACPI_REDUCED_HARDWARE */
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/* Global handlers */
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acpi_gbl_global_notify[0].handler = NULL;
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acpi_gbl_global_notify[1].handler = NULL;
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acpi_gbl_exception_handler = NULL;
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acpi_gbl_init_handler = NULL;
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acpi_gbl_table_handler = NULL;
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acpi_gbl_interface_handler = NULL;
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/* Global Lock support */
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acpi_gbl_global_lock_semaphore = NULL;
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acpi_gbl_global_lock_mutex = NULL;
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acpi_gbl_global_lock_acquired = FALSE;
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acpi_gbl_global_lock_handle = 0;
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acpi_gbl_global_lock_present = FALSE;
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/* Miscellaneous variables */
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acpi_gbl_DSDT = NULL;
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acpi_gbl_cm_single_step = FALSE;
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acpi_gbl_shutdown = FALSE;
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acpi_gbl_ns_lookup_count = 0;
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acpi_gbl_ps_find_count = 0;
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acpi_gbl_acpi_hardware_present = TRUE;
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acpi_gbl_last_owner_id_index = 0;
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acpi_gbl_next_owner_id_offset = 0;
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acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
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acpi_gbl_osi_mutex = NULL;
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/* Hardware oriented */
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acpi_gbl_events_initialized = FALSE;
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acpi_gbl_system_awake_and_running = TRUE;
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/* Namespace */
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acpi_gbl_root_node = NULL;
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acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
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acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
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acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
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acpi_gbl_root_node_struct.parent = NULL;
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acpi_gbl_root_node_struct.child = NULL;
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acpi_gbl_root_node_struct.peer = NULL;
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acpi_gbl_root_node_struct.object = NULL;
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#ifdef ACPI_DISASSEMBLER
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acpi_gbl_external_list = NULL;
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acpi_gbl_num_external_methods = 0;
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acpi_gbl_resolved_external_methods = 0;
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#endif
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#ifdef ACPI_DEBUG_OUTPUT
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acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
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#endif
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#ifdef ACPI_DBG_TRACK_ALLOCATIONS
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acpi_gbl_display_final_mem_stats = FALSE;
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acpi_gbl_disable_mem_tracking = FALSE;
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#endif
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return_ACPI_STATUS(AE_OK);
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_ut_terminate
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*
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* PARAMETERS: none
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*
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* RETURN: none
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*
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* DESCRIPTION: Free global memory
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*
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******************************************************************************/
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static void acpi_ut_terminate(void)
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{
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ACPI_FUNCTION_TRACE(ut_terminate);
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acpi_ut_free_gpe_lists();
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acpi_ut_delete_address_lists();
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_subsystem_shutdown
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Shutdown the various components. Do not delete the mutex
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* objects here, because the AML debugger may be still running.
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*
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******************************************************************************/
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void acpi_ut_subsystem_shutdown(void)
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{
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ACPI_FUNCTION_TRACE(ut_subsystem_shutdown);
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/* Just exit if subsystem is already shutdown */
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if (acpi_gbl_shutdown) {
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ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
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return_VOID;
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}
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/* Subsystem appears active, go ahead and shut it down */
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acpi_gbl_shutdown = TRUE;
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acpi_gbl_startup_flags = 0;
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ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
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#ifndef ACPI_ASL_COMPILER
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/* Close the acpi_event Handling */
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acpi_ev_terminate();
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/* Delete any dynamic _OSI interfaces */
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acpi_ut_interface_terminate();
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#endif
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/* Close the Namespace */
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acpi_ns_terminate();
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/* Delete the ACPI tables */
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acpi_tb_terminate();
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/* Close the globals */
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acpi_ut_terminate();
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/* Purge the local caches */
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(void)acpi_ut_delete_caches();
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return_VOID;
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}
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