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Linux kernel mirror (for testing)
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linux
1/******************************************************************************
2 *
3 * Module Name: utinit - Common ACPI subsystem initialization
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2005, 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
45#include <acpi/acpi.h>
46#include <acpi/acnamesp.h>
47#include <acpi/acevents.h>
48
49#define _COMPONENT ACPI_UTILITIES
50 ACPI_MODULE_NAME ("utinit")
51
52/* Local prototypes */
53
54static void
55acpi_ut_fadt_register_error (
56 char *register_name,
57 u32 value,
58 acpi_size offset);
59
60static void acpi_ut_terminate (
61 void);
62
63
64/*******************************************************************************
65 *
66 * FUNCTION: acpi_ut_fadt_register_error
67 *
68 * PARAMETERS: register_name - Pointer to string identifying register
69 * Value - Actual register contents value
70 * Offset - Byte offset in the FADT
71 *
72 * RETURN: AE_BAD_VALUE
73 *
74 * DESCRIPTION: Display failure message
75 *
76 ******************************************************************************/
77
78static void
79acpi_ut_fadt_register_error (
80 char *register_name,
81 u32 value,
82 acpi_size offset)
83{
84
85 ACPI_REPORT_WARNING (
86 ("Invalid FADT value %s=%X at offset %X FADT=%p\n",
87 register_name, value, (u32) offset, acpi_gbl_FADT));
88}
89
90
91/******************************************************************************
92 *
93 * FUNCTION: acpi_ut_validate_fadt
94 *
95 * PARAMETERS: None
96 *
97 * RETURN: Status
98 *
99 * DESCRIPTION: Validate various ACPI registers in the FADT
100 *
101 ******************************************************************************/
102
103acpi_status
104acpi_ut_validate_fadt (
105 void)
106{
107
108 /*
109 * Verify Fixed ACPI Description Table fields,
110 * but don't abort on any problems, just display error
111 */
112 if (acpi_gbl_FADT->pm1_evt_len < 4) {
113 acpi_ut_fadt_register_error ("PM1_EVT_LEN",
114 (u32) acpi_gbl_FADT->pm1_evt_len,
115 ACPI_FADT_OFFSET (pm1_evt_len));
116 }
117
118 if (!acpi_gbl_FADT->pm1_cnt_len) {
119 acpi_ut_fadt_register_error ("PM1_CNT_LEN", 0,
120 ACPI_FADT_OFFSET (pm1_cnt_len));
121 }
122
123 if (!acpi_gbl_FADT->xpm1a_evt_blk.address) {
124 acpi_ut_fadt_register_error ("X_PM1a_EVT_BLK", 0,
125 ACPI_FADT_OFFSET (xpm1a_evt_blk.address));
126 }
127
128 if (!acpi_gbl_FADT->xpm1a_cnt_blk.address) {
129 acpi_ut_fadt_register_error ("X_PM1a_CNT_BLK", 0,
130 ACPI_FADT_OFFSET (xpm1a_cnt_blk.address));
131 }
132
133 if (!acpi_gbl_FADT->xpm_tmr_blk.address) {
134 acpi_ut_fadt_register_error ("X_PM_TMR_BLK", 0,
135 ACPI_FADT_OFFSET (xpm_tmr_blk.address));
136 }
137
138 if ((acpi_gbl_FADT->xpm2_cnt_blk.address &&
139 !acpi_gbl_FADT->pm2_cnt_len)) {
140 acpi_ut_fadt_register_error ("PM2_CNT_LEN",
141 (u32) acpi_gbl_FADT->pm2_cnt_len,
142 ACPI_FADT_OFFSET (pm2_cnt_len));
143 }
144
145 if (acpi_gbl_FADT->pm_tm_len < 4) {
146 acpi_ut_fadt_register_error ("PM_TM_LEN",
147 (u32) acpi_gbl_FADT->pm_tm_len,
148 ACPI_FADT_OFFSET (pm_tm_len));
149 }
150
151 /* Length of GPE blocks must be a multiple of 2 */
152
153 if (acpi_gbl_FADT->xgpe0_blk.address &&
154 (acpi_gbl_FADT->gpe0_blk_len & 1)) {
155 acpi_ut_fadt_register_error ("(x)GPE0_BLK_LEN",
156 (u32) acpi_gbl_FADT->gpe0_blk_len,
157 ACPI_FADT_OFFSET (gpe0_blk_len));
158 }
159
160 if (acpi_gbl_FADT->xgpe1_blk.address &&
161 (acpi_gbl_FADT->gpe1_blk_len & 1)) {
162 acpi_ut_fadt_register_error ("(x)GPE1_BLK_LEN",
163 (u32) acpi_gbl_FADT->gpe1_blk_len,
164 ACPI_FADT_OFFSET (gpe1_blk_len));
165 }
166
167 return (AE_OK);
168}
169
170
171/******************************************************************************
172 *
173 * FUNCTION: acpi_ut_terminate
174 *
175 * PARAMETERS: none
176 *
177 * RETURN: none
178 *
179 * DESCRIPTION: Free global memory
180 *
181 ******************************************************************************/
182
183static void
184acpi_ut_terminate (
185 void)
186{
187 struct acpi_gpe_block_info *gpe_block;
188 struct acpi_gpe_block_info *next_gpe_block;
189 struct acpi_gpe_xrupt_info *gpe_xrupt_info;
190 struct acpi_gpe_xrupt_info *next_gpe_xrupt_info;
191
192
193 ACPI_FUNCTION_TRACE ("ut_terminate");
194
195
196 /* Free global tables, etc. */
197 /* Free global GPE blocks and related info structures */
198
199 gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
200 while (gpe_xrupt_info) {
201 gpe_block = gpe_xrupt_info->gpe_block_list_head;
202 while (gpe_block) {
203 next_gpe_block = gpe_block->next;
204 ACPI_MEM_FREE (gpe_block->event_info);
205 ACPI_MEM_FREE (gpe_block->register_info);
206 ACPI_MEM_FREE (gpe_block);
207
208 gpe_block = next_gpe_block;
209 }
210 next_gpe_xrupt_info = gpe_xrupt_info->next;
211 ACPI_MEM_FREE (gpe_xrupt_info);
212 gpe_xrupt_info = next_gpe_xrupt_info;
213 }
214
215 return_VOID;
216}
217
218
219/*******************************************************************************
220 *
221 * FUNCTION: acpi_ut_subsystem_shutdown
222 *
223 * PARAMETERS: none
224 *
225 * RETURN: none
226 *
227 * DESCRIPTION: Shutdown the various subsystems. Don't delete the mutex
228 * objects here -- because the AML debugger may be still running.
229 *
230 ******************************************************************************/
231
232void
233acpi_ut_subsystem_shutdown (
234 void)
235{
236
237 ACPI_FUNCTION_TRACE ("ut_subsystem_shutdown");
238
239 /* Just exit if subsystem is already shutdown */
240
241 if (acpi_gbl_shutdown) {
242 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
243 "ACPI Subsystem is already terminated\n"));
244 return_VOID;
245 }
246
247 /* Subsystem appears active, go ahead and shut it down */
248
249 acpi_gbl_shutdown = TRUE;
250 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
251 "Shutting down ACPI Subsystem...\n"));
252
253 /* Close the acpi_event Handling */
254
255 acpi_ev_terminate ();
256
257 /* Close the Namespace */
258
259 acpi_ns_terminate ();
260
261 /* Close the globals */
262
263 acpi_ut_terminate ();
264
265 /* Purge the local caches */
266
267 (void) acpi_purge_cached_objects ();
268
269 /* Debug only - display leftover memory allocation, if any */
270
271#ifdef ACPI_DBG_TRACK_ALLOCATIONS
272 acpi_ut_dump_allocations (ACPI_UINT32_MAX, NULL);
273#endif
274
275 return_VOID;
276}
277
278