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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: tbgetall - Get all required ACPI tables | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
4a90c7e8 | 8 | * Copyright (C) 2000 - 2006, R. Byron Moore |
1da177e4 LT |
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/actables.h> | |
46 | ||
1da177e4 | 47 | #define _COMPONENT ACPI_TABLES |
4be44fcd | 48 | ACPI_MODULE_NAME("tbgetall") |
1da177e4 | 49 | |
44f6c012 | 50 | /* Local prototypes */ |
44f6c012 | 51 | static acpi_status |
4be44fcd LB |
52 | acpi_tb_get_primary_table(struct acpi_pointer *address, |
53 | struct acpi_table_desc *table_info); | |
44f6c012 RM |
54 | |
55 | static acpi_status | |
4be44fcd LB |
56 | acpi_tb_get_secondary_table(struct acpi_pointer *address, |
57 | acpi_string signature, | |
58 | struct acpi_table_desc *table_info); | |
1da177e4 LT |
59 | |
60 | /******************************************************************************* | |
61 | * | |
62 | * FUNCTION: acpi_tb_get_primary_table | |
63 | * | |
64 | * PARAMETERS: Address - Physical address of table to retrieve | |
65 | * *table_info - Where the table info is returned | |
66 | * | |
67 | * RETURN: Status | |
68 | * | |
69 | * DESCRIPTION: Maps the physical address of table into a logical address | |
70 | * | |
71 | ******************************************************************************/ | |
72 | ||
44f6c012 | 73 | static acpi_status |
4be44fcd LB |
74 | acpi_tb_get_primary_table(struct acpi_pointer *address, |
75 | struct acpi_table_desc *table_info) | |
1da177e4 | 76 | { |
4be44fcd LB |
77 | acpi_status status; |
78 | struct acpi_table_header header; | |
1da177e4 | 79 | |
4be44fcd | 80 | ACPI_FUNCTION_TRACE("tb_get_primary_table"); |
1da177e4 LT |
81 | |
82 | /* Ignore a NULL address in the RSDT */ | |
83 | ||
84 | if (!address->pointer.value) { | |
4be44fcd | 85 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
86 | } |
87 | ||
44f6c012 RM |
88 | /* Get the header in order to get signature and table size */ |
89 | ||
4be44fcd LB |
90 | status = acpi_tb_get_table_header(address, &header); |
91 | if (ACPI_FAILURE(status)) { | |
92 | return_ACPI_STATUS(status); | |
1da177e4 LT |
93 | } |
94 | ||
95 | /* Clear the table_info */ | |
96 | ||
4be44fcd | 97 | ACPI_MEMSET(table_info, 0, sizeof(struct acpi_table_desc)); |
1da177e4 LT |
98 | |
99 | /* | |
100 | * Check the table signature and make sure it is recognized. | |
101 | * Also checks the header checksum | |
102 | */ | |
103 | table_info->pointer = &header; | |
4be44fcd LB |
104 | status = acpi_tb_recognize_table(table_info, ACPI_TABLE_PRIMARY); |
105 | if (ACPI_FAILURE(status)) { | |
106 | return_ACPI_STATUS(status); | |
1da177e4 LT |
107 | } |
108 | ||
109 | /* Get the entire table */ | |
110 | ||
4be44fcd LB |
111 | status = acpi_tb_get_table_body(address, &header, table_info); |
112 | if (ACPI_FAILURE(status)) { | |
113 | return_ACPI_STATUS(status); | |
1da177e4 LT |
114 | } |
115 | ||
116 | /* Install the table */ | |
117 | ||
4be44fcd LB |
118 | status = acpi_tb_install_table(table_info); |
119 | return_ACPI_STATUS(status); | |
1da177e4 LT |
120 | } |
121 | ||
1da177e4 LT |
122 | /******************************************************************************* |
123 | * | |
124 | * FUNCTION: acpi_tb_get_secondary_table | |
125 | * | |
126 | * PARAMETERS: Address - Physical address of table to retrieve | |
127 | * *table_info - Where the table info is returned | |
128 | * | |
129 | * RETURN: Status | |
130 | * | |
131 | * DESCRIPTION: Maps the physical address of table into a logical address | |
132 | * | |
133 | ******************************************************************************/ | |
134 | ||
44f6c012 | 135 | static acpi_status |
4be44fcd LB |
136 | acpi_tb_get_secondary_table(struct acpi_pointer *address, |
137 | acpi_string signature, | |
138 | struct acpi_table_desc *table_info) | |
1da177e4 | 139 | { |
4be44fcd LB |
140 | acpi_status status; |
141 | struct acpi_table_header header; | |
1da177e4 | 142 | |
4be44fcd | 143 | ACPI_FUNCTION_TRACE_STR("tb_get_secondary_table", signature); |
1da177e4 LT |
144 | |
145 | /* Get the header in order to match the signature */ | |
146 | ||
4be44fcd LB |
147 | status = acpi_tb_get_table_header(address, &header); |
148 | if (ACPI_FAILURE(status)) { | |
149 | return_ACPI_STATUS(status); | |
1da177e4 LT |
150 | } |
151 | ||
152 | /* Signature must match request */ | |
153 | ||
4be44fcd | 154 | if (ACPI_STRNCMP(header.signature, signature, ACPI_NAME_SIZE)) { |
b8e4d893 BM |
155 | ACPI_ERROR((AE_INFO, |
156 | "Incorrect table signature - wanted [%s] found [%4.4s]", | |
157 | signature, header.signature)); | |
4be44fcd | 158 | return_ACPI_STATUS(AE_BAD_SIGNATURE); |
1da177e4 LT |
159 | } |
160 | ||
161 | /* | |
162 | * Check the table signature and make sure it is recognized. | |
163 | * Also checks the header checksum | |
164 | */ | |
165 | table_info->pointer = &header; | |
4be44fcd LB |
166 | status = acpi_tb_recognize_table(table_info, ACPI_TABLE_SECONDARY); |
167 | if (ACPI_FAILURE(status)) { | |
168 | return_ACPI_STATUS(status); | |
1da177e4 LT |
169 | } |
170 | ||
171 | /* Get the entire table */ | |
172 | ||
4be44fcd LB |
173 | status = acpi_tb_get_table_body(address, &header, table_info); |
174 | if (ACPI_FAILURE(status)) { | |
175 | return_ACPI_STATUS(status); | |
1da177e4 LT |
176 | } |
177 | ||
178 | /* Install the table */ | |
179 | ||
4be44fcd LB |
180 | status = acpi_tb_install_table(table_info); |
181 | return_ACPI_STATUS(status); | |
1da177e4 LT |
182 | } |
183 | ||
1da177e4 LT |
184 | /******************************************************************************* |
185 | * | |
186 | * FUNCTION: acpi_tb_get_required_tables | |
187 | * | |
188 | * PARAMETERS: None | |
189 | * | |
190 | * RETURN: Status | |
191 | * | |
192 | * DESCRIPTION: Load and validate tables other than the RSDT. The RSDT must | |
193 | * already be loaded and validated. | |
194 | * | |
195 | * Get the minimum set of ACPI tables, namely: | |
196 | * | |
197 | * 1) FADT (via RSDT in loop below) | |
198 | * 2) FACS (via FADT) | |
199 | * 3) DSDT (via FADT) | |
200 | * | |
201 | ******************************************************************************/ | |
202 | ||
4be44fcd | 203 | acpi_status acpi_tb_get_required_tables(void) |
1da177e4 | 204 | { |
4be44fcd LB |
205 | acpi_status status = AE_OK; |
206 | u32 i; | |
207 | struct acpi_table_desc table_info; | |
208 | struct acpi_pointer address; | |
1da177e4 | 209 | |
4be44fcd | 210 | ACPI_FUNCTION_TRACE("tb_get_required_tables"); |
1da177e4 | 211 | |
4be44fcd LB |
212 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%d ACPI tables in RSDT\n", |
213 | acpi_gbl_rsdt_table_count)); | |
1da177e4 | 214 | |
4be44fcd | 215 | address.pointer_type = acpi_gbl_table_flags | ACPI_LOGICAL_ADDRESSING; |
1da177e4 LT |
216 | |
217 | /* | |
218 | * Loop through all table pointers found in RSDT. | |
219 | * This will NOT include the FACS and DSDT - we must get | |
220 | * them after the loop. | |
221 | * | |
222 | * The only tables we are interested in getting here is the FADT and | |
223 | * any SSDTs. | |
224 | */ | |
225 | for (i = 0; i < acpi_gbl_rsdt_table_count; i++) { | |
52fc0b02 | 226 | |
1da177e4 LT |
227 | /* Get the table address from the common internal XSDT */ |
228 | ||
4be44fcd | 229 | address.pointer.value = acpi_gbl_XSDT->table_offset_entry[i]; |
1da177e4 LT |
230 | |
231 | /* | |
232 | * Get the tables needed by this subsystem (FADT and any SSDTs). | |
233 | * NOTE: All other tables are completely ignored at this time. | |
234 | */ | |
4be44fcd | 235 | status = acpi_tb_get_primary_table(&address, &table_info); |
1da177e4 | 236 | if ((status != AE_OK) && (status != AE_TABLE_NOT_SUPPORTED)) { |
b8e4d893 BM |
237 | ACPI_WARNING((AE_INFO, |
238 | "%s, while getting table at %8.8X%8.8X", | |
239 | acpi_format_exception(status), | |
240 | ACPI_FORMAT_UINT64(address.pointer. | |
241 | value))); | |
1da177e4 LT |
242 | } |
243 | } | |
244 | ||
245 | /* We must have a FADT to continue */ | |
246 | ||
247 | if (!acpi_gbl_FADT) { | |
b8e4d893 | 248 | ACPI_ERROR((AE_INFO, "No FADT present in RSDT/XSDT")); |
4be44fcd | 249 | return_ACPI_STATUS(AE_NO_ACPI_TABLES); |
1da177e4 LT |
250 | } |
251 | ||
252 | /* | |
44f6c012 RM |
253 | * Convert the FADT to a common format. This allows earlier revisions of |
254 | * the table to coexist with newer versions, using common access code. | |
1da177e4 | 255 | */ |
4be44fcd LB |
256 | status = acpi_tb_convert_table_fadt(); |
257 | if (ACPI_FAILURE(status)) { | |
b8e4d893 BM |
258 | ACPI_ERROR((AE_INFO, |
259 | "Could not convert FADT to internal common format")); | |
4be44fcd | 260 | return_ACPI_STATUS(status); |
1da177e4 LT |
261 | } |
262 | ||
44f6c012 RM |
263 | /* Get the FACS (Pointed to by the FADT) */ |
264 | ||
1da177e4 LT |
265 | address.pointer.value = acpi_gbl_FADT->xfirmware_ctrl; |
266 | ||
4be44fcd LB |
267 | status = acpi_tb_get_secondary_table(&address, FACS_SIG, &table_info); |
268 | if (ACPI_FAILURE(status)) { | |
b8e4d893 BM |
269 | ACPI_EXCEPTION((AE_INFO, status, |
270 | "Could not get/install the FACS")); | |
4be44fcd | 271 | return_ACPI_STATUS(status); |
1da177e4 LT |
272 | } |
273 | ||
274 | /* | |
275 | * Create the common FACS pointer table | |
276 | * (Contains pointers to the original table) | |
277 | */ | |
4be44fcd LB |
278 | status = acpi_tb_build_common_facs(&table_info); |
279 | if (ACPI_FAILURE(status)) { | |
280 | return_ACPI_STATUS(status); | |
1da177e4 LT |
281 | } |
282 | ||
44f6c012 RM |
283 | /* Get/install the DSDT (Pointed to by the FADT) */ |
284 | ||
1da177e4 LT |
285 | address.pointer.value = acpi_gbl_FADT->Xdsdt; |
286 | ||
4be44fcd LB |
287 | status = acpi_tb_get_secondary_table(&address, DSDT_SIG, &table_info); |
288 | if (ACPI_FAILURE(status)) { | |
b8e4d893 | 289 | ACPI_ERROR((AE_INFO, "Could not get/install the DSDT")); |
4be44fcd | 290 | return_ACPI_STATUS(status); |
1da177e4 LT |
291 | } |
292 | ||
293 | /* Set Integer Width (32/64) based upon DSDT revision */ | |
294 | ||
4be44fcd | 295 | acpi_ut_set_integer_width(acpi_gbl_DSDT->revision); |
1da177e4 LT |
296 | |
297 | /* Dump the entire DSDT */ | |
298 | ||
4be44fcd LB |
299 | ACPI_DEBUG_PRINT((ACPI_DB_TABLES, |
300 | "Hex dump of entire DSDT, size %d (0x%X), Integer width = %d\n", | |
301 | acpi_gbl_DSDT->length, acpi_gbl_DSDT->length, | |
302 | acpi_gbl_integer_bit_width)); | |
c51a4de8 BM |
303 | |
304 | ACPI_DUMP_BUFFER(ACPI_CAST_PTR(u8, acpi_gbl_DSDT), | |
305 | acpi_gbl_DSDT->length); | |
1da177e4 LT |
306 | |
307 | /* Always delete the RSDP mapping, we are done with it */ | |
308 | ||
4be44fcd LB |
309 | acpi_tb_delete_tables_by_type(ACPI_TABLE_RSDP); |
310 | return_ACPI_STATUS(status); | |
1da177e4 | 311 | } |