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1da177e4 LT |
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 | ||
1da177e4 LT |
44 | #include <acpi/acpi.h> |
45 | #include <acpi/acnamesp.h> | |
46 | #include <acpi/acevents.h> | |
47 | ||
48 | #define _COMPONENT ACPI_UTILITIES | |
4be44fcd | 49 | ACPI_MODULE_NAME("utinit") |
1da177e4 | 50 | |
44f6c012 | 51 | /* Local prototypes */ |
44f6c012 | 52 | static void |
4be44fcd | 53 | acpi_ut_fadt_register_error(char *register_name, u32 value, acpi_size offset); |
44f6c012 | 54 | |
4be44fcd | 55 | static void acpi_ut_terminate(void); |
1da177e4 LT |
56 | |
57 | /******************************************************************************* | |
58 | * | |
59 | * FUNCTION: acpi_ut_fadt_register_error | |
60 | * | |
44f6c012 | 61 | * PARAMETERS: register_name - Pointer to string identifying register |
1da177e4 | 62 | * Value - Actual register contents value |
44f6c012 | 63 | * Offset - Byte offset in the FADT |
1da177e4 LT |
64 | * |
65 | * RETURN: AE_BAD_VALUE | |
66 | * | |
44f6c012 | 67 | * DESCRIPTION: Display failure message |
1da177e4 LT |
68 | * |
69 | ******************************************************************************/ | |
70 | ||
71 | static void | |
4be44fcd | 72 | acpi_ut_fadt_register_error(char *register_name, u32 value, acpi_size offset) |
1da177e4 LT |
73 | { |
74 | ||
4be44fcd LB |
75 | ACPI_REPORT_WARNING(("Invalid FADT value %s=%X at offset %X FADT=%p\n", |
76 | register_name, value, (u32) offset, | |
77 | acpi_gbl_FADT)); | |
1da177e4 LT |
78 | } |
79 | ||
1da177e4 LT |
80 | /****************************************************************************** |
81 | * | |
82 | * FUNCTION: acpi_ut_validate_fadt | |
83 | * | |
84 | * PARAMETERS: None | |
85 | * | |
86 | * RETURN: Status | |
87 | * | |
88 | * DESCRIPTION: Validate various ACPI registers in the FADT | |
89 | * | |
90 | ******************************************************************************/ | |
91 | ||
4be44fcd | 92 | acpi_status acpi_ut_validate_fadt(void) |
1da177e4 LT |
93 | { |
94 | ||
95 | /* | |
96 | * Verify Fixed ACPI Description Table fields, | |
97 | * but don't abort on any problems, just display error | |
98 | */ | |
99 | if (acpi_gbl_FADT->pm1_evt_len < 4) { | |
4be44fcd LB |
100 | acpi_ut_fadt_register_error("PM1_EVT_LEN", |
101 | (u32) acpi_gbl_FADT->pm1_evt_len, | |
102 | ACPI_FADT_OFFSET(pm1_evt_len)); | |
1da177e4 LT |
103 | } |
104 | ||
105 | if (!acpi_gbl_FADT->pm1_cnt_len) { | |
4be44fcd LB |
106 | acpi_ut_fadt_register_error("PM1_CNT_LEN", 0, |
107 | ACPI_FADT_OFFSET(pm1_cnt_len)); | |
1da177e4 LT |
108 | } |
109 | ||
110 | if (!acpi_gbl_FADT->xpm1a_evt_blk.address) { | |
4be44fcd LB |
111 | acpi_ut_fadt_register_error("X_PM1a_EVT_BLK", 0, |
112 | ACPI_FADT_OFFSET(xpm1a_evt_blk. | |
113 | address)); | |
1da177e4 LT |
114 | } |
115 | ||
116 | if (!acpi_gbl_FADT->xpm1a_cnt_blk.address) { | |
4be44fcd LB |
117 | acpi_ut_fadt_register_error("X_PM1a_CNT_BLK", 0, |
118 | ACPI_FADT_OFFSET(xpm1a_cnt_blk. | |
119 | address)); | |
1da177e4 LT |
120 | } |
121 | ||
122 | if (!acpi_gbl_FADT->xpm_tmr_blk.address) { | |
4be44fcd LB |
123 | acpi_ut_fadt_register_error("X_PM_TMR_BLK", 0, |
124 | ACPI_FADT_OFFSET(xpm_tmr_blk. | |
125 | address)); | |
1da177e4 LT |
126 | } |
127 | ||
128 | if ((acpi_gbl_FADT->xpm2_cnt_blk.address && | |
4be44fcd LB |
129 | !acpi_gbl_FADT->pm2_cnt_len)) { |
130 | acpi_ut_fadt_register_error("PM2_CNT_LEN", | |
131 | (u32) acpi_gbl_FADT->pm2_cnt_len, | |
132 | ACPI_FADT_OFFSET(pm2_cnt_len)); | |
1da177e4 LT |
133 | } |
134 | ||
135 | if (acpi_gbl_FADT->pm_tm_len < 4) { | |
4be44fcd LB |
136 | acpi_ut_fadt_register_error("PM_TM_LEN", |
137 | (u32) acpi_gbl_FADT->pm_tm_len, | |
138 | ACPI_FADT_OFFSET(pm_tm_len)); | |
1da177e4 LT |
139 | } |
140 | ||
141 | /* Length of GPE blocks must be a multiple of 2 */ | |
142 | ||
143 | if (acpi_gbl_FADT->xgpe0_blk.address && | |
4be44fcd LB |
144 | (acpi_gbl_FADT->gpe0_blk_len & 1)) { |
145 | acpi_ut_fadt_register_error("(x)GPE0_BLK_LEN", | |
146 | (u32) acpi_gbl_FADT->gpe0_blk_len, | |
147 | ACPI_FADT_OFFSET(gpe0_blk_len)); | |
1da177e4 LT |
148 | } |
149 | ||
150 | if (acpi_gbl_FADT->xgpe1_blk.address && | |
4be44fcd LB |
151 | (acpi_gbl_FADT->gpe1_blk_len & 1)) { |
152 | acpi_ut_fadt_register_error("(x)GPE1_BLK_LEN", | |
153 | (u32) acpi_gbl_FADT->gpe1_blk_len, | |
154 | ACPI_FADT_OFFSET(gpe1_blk_len)); | |
1da177e4 LT |
155 | } |
156 | ||
157 | return (AE_OK); | |
158 | } | |
159 | ||
1da177e4 LT |
160 | /****************************************************************************** |
161 | * | |
162 | * FUNCTION: acpi_ut_terminate | |
163 | * | |
164 | * PARAMETERS: none | |
165 | * | |
166 | * RETURN: none | |
167 | * | |
44f6c012 | 168 | * DESCRIPTION: Free global memory |
1da177e4 LT |
169 | * |
170 | ******************************************************************************/ | |
171 | ||
4be44fcd | 172 | static void acpi_ut_terminate(void) |
1da177e4 | 173 | { |
4be44fcd LB |
174 | struct acpi_gpe_block_info *gpe_block; |
175 | struct acpi_gpe_block_info *next_gpe_block; | |
176 | struct acpi_gpe_xrupt_info *gpe_xrupt_info; | |
177 | struct acpi_gpe_xrupt_info *next_gpe_xrupt_info; | |
1da177e4 | 178 | |
4be44fcd | 179 | ACPI_FUNCTION_TRACE("ut_terminate"); |
1da177e4 LT |
180 | |
181 | /* Free global tables, etc. */ | |
1da177e4 LT |
182 | /* Free global GPE blocks and related info structures */ |
183 | ||
184 | gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head; | |
185 | while (gpe_xrupt_info) { | |
186 | gpe_block = gpe_xrupt_info->gpe_block_list_head; | |
187 | while (gpe_block) { | |
188 | next_gpe_block = gpe_block->next; | |
4be44fcd LB |
189 | ACPI_MEM_FREE(gpe_block->event_info); |
190 | ACPI_MEM_FREE(gpe_block->register_info); | |
191 | ACPI_MEM_FREE(gpe_block); | |
1da177e4 LT |
192 | |
193 | gpe_block = next_gpe_block; | |
194 | } | |
195 | next_gpe_xrupt_info = gpe_xrupt_info->next; | |
4be44fcd | 196 | ACPI_MEM_FREE(gpe_xrupt_info); |
1da177e4 LT |
197 | gpe_xrupt_info = next_gpe_xrupt_info; |
198 | } | |
199 | ||
200 | return_VOID; | |
201 | } | |
202 | ||
1da177e4 LT |
203 | /******************************************************************************* |
204 | * | |
205 | * FUNCTION: acpi_ut_subsystem_shutdown | |
206 | * | |
207 | * PARAMETERS: none | |
208 | * | |
209 | * RETURN: none | |
210 | * | |
211 | * DESCRIPTION: Shutdown the various subsystems. Don't delete the mutex | |
212 | * objects here -- because the AML debugger may be still running. | |
213 | * | |
214 | ******************************************************************************/ | |
215 | ||
4be44fcd | 216 | void acpi_ut_subsystem_shutdown(void) |
1da177e4 LT |
217 | { |
218 | ||
4be44fcd | 219 | ACPI_FUNCTION_TRACE("ut_subsystem_shutdown"); |
1da177e4 LT |
220 | |
221 | /* Just exit if subsystem is already shutdown */ | |
222 | ||
223 | if (acpi_gbl_shutdown) { | |
4be44fcd LB |
224 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
225 | "ACPI Subsystem is already terminated\n")); | |
1da177e4 LT |
226 | return_VOID; |
227 | } | |
228 | ||
229 | /* Subsystem appears active, go ahead and shut it down */ | |
230 | ||
231 | acpi_gbl_shutdown = TRUE; | |
4be44fcd | 232 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem...\n")); |
1da177e4 LT |
233 | |
234 | /* Close the acpi_event Handling */ | |
235 | ||
4be44fcd | 236 | acpi_ev_terminate(); |
1da177e4 LT |
237 | |
238 | /* Close the Namespace */ | |
239 | ||
4be44fcd | 240 | acpi_ns_terminate(); |
1da177e4 LT |
241 | |
242 | /* Close the globals */ | |
243 | ||
4be44fcd | 244 | acpi_ut_terminate(); |
1da177e4 LT |
245 | |
246 | /* Purge the local caches */ | |
247 | ||
4be44fcd | 248 | (void)acpi_ut_delete_caches(); |
1da177e4 LT |
249 | |
250 | /* Debug only - display leftover memory allocation, if any */ | |
251 | ||
252 | #ifdef ACPI_DBG_TRACK_ALLOCATIONS | |
4be44fcd | 253 | acpi_ut_dump_allocations(ACPI_UINT32_MAX, NULL); |
1da177e4 LT |
254 | #endif |
255 | ||
256 | return_VOID; | |
257 | } |