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utinit.c

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

/*
 * Copyright (C) 2000 - 2007, R. Byron Moore
 * 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 <acpi/acnamesp.h>
#include <acpi/acevents.h>
#include <acpi/actables.h>

#define _COMPONENT          ACPI_UTILITIES
ACPI_MODULE_NAME("utinit")

/* Local prototypes */
static void acpi_ut_terminate(void);

/******************************************************************************
 *
 * FUNCTION:    acpi_ut_terminate
 *
 * PARAMETERS:  none
 *
 * RETURN:      none
 *
 * DESCRIPTION: Free global memory
 *
 ******************************************************************************/

static void acpi_ut_terminate(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;

      ACPI_FUNCTION_TRACE(ut_terminate);

      /* 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;
      }

      return_VOID;
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_subsystem_shutdown
 *
 * PARAMETERS:  none
 *
 * RETURN:      none
 *
 * DESCRIPTION: Shutdown the various subsystems.  Don't 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"));

      /* Close the acpi_event Handling */

      acpi_ev_terminate();

      /* 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;
}

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