drivers/acpi/acpica/utinit.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utinit - Common ACPI subsystem initialization
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2008, Intel Corp.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 #include <acpi/acpi.h>
  45 #include "accommon.h"
  46 #include "acnamesp.h"
  47 #include "acevents.h"
  48 #include "actables.h"
  49
  50 #define _COMPONENT          ACPI_UTILITIES
  51 ACPI_MODULE_NAME("utinit")
  52
  53 /* Local prototypes */
  54 static void acpi_ut_terminate(void);
  55
  56 /******************************************************************************
  57  *
  58  * FUNCTION:    acpi_ut_terminate
  59  *
  60  * PARAMETERS:  none
  61  *
  62  * RETURN:      none
  63  *
  64  * DESCRIPTION: Free global memory
  65  *
  66  ******************************************************************************/
  67
  68 static void acpi_ut_terminate(void)
  69 {
  70         struct acpi_gpe_block_info *gpe_block;
  71         struct acpi_gpe_block_info *next_gpe_block;
  72         struct acpi_gpe_xrupt_info *gpe_xrupt_info;
  73         struct acpi_gpe_xrupt_info *next_gpe_xrupt_info;
  74
  75         ACPI_FUNCTION_TRACE(ut_terminate);
  76
  77         /* Free global GPE blocks and related info structures */
  78
  79         gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
  80         while (gpe_xrupt_info) {
  81                 gpe_block = gpe_xrupt_info->gpe_block_list_head;
  82                 while (gpe_block) {
  83                         next_gpe_block = gpe_block->next;
  84                         ACPI_FREE(gpe_block->event_info);
  85                         ACPI_FREE(gpe_block->register_info);
  86                         ACPI_FREE(gpe_block);
  87
  88                         gpe_block = next_gpe_block;
  89                 }
  90                 next_gpe_xrupt_info = gpe_xrupt_info->next;
  91                 ACPI_FREE(gpe_xrupt_info);
  92                 gpe_xrupt_info = next_gpe_xrupt_info;
  93         }
  94
  95         return_VOID;
  96 }
  97
  98 /*******************************************************************************
  99  *
 100  * FUNCTION:    acpi_ut_subsystem_shutdown
 101  *
 102  * PARAMETERS:  none
 103  *
 104  * RETURN:      none
 105  *
 106  * DESCRIPTION: Shutdown the various subsystems.  Don't delete the mutex
 107  *              objects here -- because the AML debugger may be still running.
 108  *
 109  ******************************************************************************/
 110
 111 void acpi_ut_subsystem_shutdown(void)
 112 {
 113
 114         ACPI_FUNCTION_TRACE(ut_subsystem_shutdown);
 115
 116         /* Just exit if subsystem is already shutdown */
 117
 118         if (acpi_gbl_shutdown) {
 119                 ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
 120                 return_VOID;
 121         }
 122
 123         /* Subsystem appears active, go ahead and shut it down */
 124
 125         acpi_gbl_shutdown = TRUE;
 126         acpi_gbl_startup_flags = 0;
 127         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
 128
 129 #ifndef ACPI_ASL_COMPILER
 130
 131         /* Close the acpi_event Handling */
 132
 133         acpi_ev_terminate();
 134 #endif
 135
 136         /* Close the Namespace */
 137
 138         acpi_ns_terminate();
 139
 140         /* Delete the ACPI tables */
 141
 142         acpi_tb_terminate();
 143
 144         /* Close the globals */
 145
 146         acpi_ut_terminate();
 147
 148         /* Purge the local caches */
 149
 150         (void)acpi_ut_delete_caches();
 151         return_VOID;
 152 }