drivers/acpi/acpica/utinit.c - linux - Git at Google

 /******************************************************************************
  *
  * Module Name: utinit - Common ACPI subsystem initialization
  *
  *****************************************************************************/

 /*
  * Copyright (C) 2000 - 2018, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions, and the following disclaimer,
  *    without modification.
  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  *    substantially similar to the "NO WARRANTY" disclaimer below
  *    ("Disclaimer") and any redistribution must be conditioned upon
  *    including a substantially similar Disclaimer requirement for further
  *    binary redistribution.
  * 3. Neither the names of the above-listed copyright holders nor the names
  *    of any contributors may be used to endorse or promote products derived
  *    from this software without specific prior written permission.
  *
  * Alternatively, this software may be distributed under the terms of the
  * GNU General Public License ("GPL") version 2 as published by the Free
  * Software Foundation.
  *
  * NO WARRANTY
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGES.
  */

 #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_module_code_list = NULL;
 	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;
 }
	/******************************************************************************
	*
	* Module Name: utinit - Common ACPI subsystem initialization
	*
	*****************************************************************************/

	/*
	* Copyright (C) 2000 - 2018, Intel Corp.
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions, and the following disclaimer,
	* without modification.
	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
	* substantially similar to the "NO WARRANTY" disclaimer below
	* ("Disclaimer") and any redistribution must be conditioned upon
	* including a substantially similar Disclaimer requirement for further
	* binary redistribution.
	* 3. Neither the names of the above-listed copyright holders nor the names
	* of any contributors may be used to endorse or promote products derived
	* from this software without specific prior written permission.
	*
	* Alternatively, this software may be distributed under the terms of the
	* GNU General Public License ("GPL") version 2 as published by the Free
	* Software Foundation.
	*
	* NO WARRANTY
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	* POSSIBILITY OF SUCH DAMAGES.
	*/

	#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_module_code_list = NULL;
	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;
	}