drivers/acpi/utilities/utinit.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utinit - Common ACPI subsystem initialization
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2007, R. Byron Moore
   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 <acpi/acnamesp.h>
  46 #include <acpi/acevents.h>
  47 #include <acpi/actables.h>
  48
  49 #define _COMPONENT          ACPI_UTILITIES
  50 ACPI_MODULE_NAME("utinit")
  51
  52 /* Local prototypes */
  53 static void acpi_ut_terminate(void);
  54
  55 /******************************************************************************
  56  *
  57  * FUNCTION:    acpi_ut_terminate
  58  *
  59  * PARAMETERS:  none
  60  *
  61  * RETURN:      none
  62  *
  63  * DESCRIPTION: Free global memory
  64  *
  65  ******************************************************************************/
  66
  67 static void acpi_ut_terminate(void)
  68 {
  69         struct acpi_gpe_block_info *gpe_block;
  70         struct acpi_gpe_block_info *next_gpe_block;
  71         struct acpi_gpe_xrupt_info *gpe_xrupt_info;
  72         struct acpi_gpe_xrupt_info *next_gpe_xrupt_info;
  73
  74         ACPI_FUNCTION_TRACE(ut_terminate);
  75
  76         /* Free global GPE blocks and related info structures */
  77
  78         gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
  79         while (gpe_xrupt_info) {
  80                 gpe_block = gpe_xrupt_info->gpe_block_list_head;
  81                 while (gpe_block) {
  82                         next_gpe_block = gpe_block->next;
  83                         ACPI_FREE(gpe_block->event_info);
  84                         ACPI_FREE(gpe_block->register_info);
  85                         ACPI_FREE(gpe_block);
  86
  87                         gpe_block = next_gpe_block;
  88                 }
  89                 next_gpe_xrupt_info = gpe_xrupt_info->next;
  90                 ACPI_FREE(gpe_xrupt_info);
  91                 gpe_xrupt_info = next_gpe_xrupt_info;
  92         }
  93
  94         return_VOID;
  95 }
  96
  97 /*******************************************************************************
  98  *
  99  * FUNCTION:    acpi_ut_subsystem_shutdown
 100  *
 101  * PARAMETERS:  none
 102  *
 103  * RETURN:      none
 104  *
 105  * DESCRIPTION: Shutdown the various subsystems.  Don't delete the mutex
 106  *              objects here -- because the AML debugger may be still running.
 107  *
 108  ******************************************************************************/
 109
 110 void acpi_ut_subsystem_shutdown(void)
 111 {
 112
 113         ACPI_FUNCTION_TRACE(ut_subsystem_shutdown);
 114
 115         /* Just exit if subsystem is already shutdown */
 116
 117         if (acpi_gbl_shutdown) {
 118                 ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
 119                 return_VOID;
 120         }
 121
 122         /* Subsystem appears active, go ahead and shut it down */
 123
 124         acpi_gbl_shutdown = TRUE;
 125         acpi_gbl_startup_flags = 0;
 126         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
 127
 128         /* Close the acpi_event Handling */
 129
 130         acpi_ev_terminate();
 131
 132         /* Close the Namespace */
 133
 134         acpi_ns_terminate();
 135
 136         /* Delete the ACPI tables */
 137
 138         acpi_tb_terminate();
 139
 140         /* Close the globals */
 141
 142         acpi_ut_terminate();
 143
 144         /* Purge the local caches */
 145
 146         (void)acpi_ut_delete_caches();
 147         return_VOID;
 148 }