ACPICA: hide private headers
[linux-2.6.git] / 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 }