/drivers/acpi/acpica/utinit.c
http://github.com/mirrors/linux · C · 288 lines · 144 code · 68 blank · 76 comment · 8 complexity · 8d6ae8623545020e8f64a881b702b937 MD5 · raw file
- // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
- /******************************************************************************
- *
- * Module Name: utinit - Common ACPI subsystem initialization
- *
- * Copyright (C) 2000 - 2020, 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;
- }