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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: tbgetall - Get all required ACPI tables | |
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/actables.h> | |
47 | ||
48 | ||
49 | #define _COMPONENT ACPI_TABLES | |
50 | ACPI_MODULE_NAME ("tbgetall") | |
51 | ||
52 | ||
53 | /******************************************************************************* | |
54 | * | |
55 | * FUNCTION: acpi_tb_get_primary_table | |
56 | * | |
57 | * PARAMETERS: Address - Physical address of table to retrieve | |
58 | * *table_info - Where the table info is returned | |
59 | * | |
60 | * RETURN: Status | |
61 | * | |
62 | * DESCRIPTION: Maps the physical address of table into a logical address | |
63 | * | |
64 | ******************************************************************************/ | |
65 | ||
66 | acpi_status | |
67 | acpi_tb_get_primary_table ( | |
68 | struct acpi_pointer *address, | |
69 | struct acpi_table_desc *table_info) | |
70 | { | |
71 | acpi_status status; | |
72 | struct acpi_table_header header; | |
73 | ||
74 | ||
75 | ACPI_FUNCTION_TRACE ("tb_get_primary_table"); | |
76 | ||
77 | ||
78 | /* Ignore a NULL address in the RSDT */ | |
79 | ||
80 | if (!address->pointer.value) { | |
81 | return_ACPI_STATUS (AE_OK); | |
82 | } | |
83 | ||
84 | /* | |
85 | * Get the header in order to get signature and table size | |
86 | */ | |
87 | status = acpi_tb_get_table_header (address, &header); | |
88 | if (ACPI_FAILURE (status)) { | |
89 | return_ACPI_STATUS (status); | |
90 | } | |
91 | ||
92 | /* Clear the table_info */ | |
93 | ||
94 | ACPI_MEMSET (table_info, 0, sizeof (struct acpi_table_desc)); | |
95 | ||
96 | /* | |
97 | * Check the table signature and make sure it is recognized. | |
98 | * Also checks the header checksum | |
99 | */ | |
100 | table_info->pointer = &header; | |
101 | status = acpi_tb_recognize_table (table_info, ACPI_TABLE_PRIMARY); | |
102 | if (ACPI_FAILURE (status)) { | |
103 | return_ACPI_STATUS (status); | |
104 | } | |
105 | ||
106 | /* Get the entire table */ | |
107 | ||
108 | status = acpi_tb_get_table_body (address, &header, table_info); | |
109 | if (ACPI_FAILURE (status)) { | |
110 | return_ACPI_STATUS (status); | |
111 | } | |
112 | ||
113 | /* Install the table */ | |
114 | ||
115 | status = acpi_tb_install_table (table_info); | |
116 | return_ACPI_STATUS (status); | |
117 | } | |
118 | ||
119 | ||
120 | /******************************************************************************* | |
121 | * | |
122 | * FUNCTION: acpi_tb_get_secondary_table | |
123 | * | |
124 | * PARAMETERS: Address - Physical address of table to retrieve | |
125 | * *table_info - Where the table info is returned | |
126 | * | |
127 | * RETURN: Status | |
128 | * | |
129 | * DESCRIPTION: Maps the physical address of table into a logical address | |
130 | * | |
131 | ******************************************************************************/ | |
132 | ||
133 | acpi_status | |
134 | acpi_tb_get_secondary_table ( | |
135 | struct acpi_pointer *address, | |
136 | acpi_string signature, | |
137 | struct acpi_table_desc *table_info) | |
138 | { | |
139 | acpi_status status; | |
140 | struct acpi_table_header header; | |
141 | ||
142 | ||
143 | ACPI_FUNCTION_TRACE_STR ("tb_get_secondary_table", signature); | |
144 | ||
145 | ||
146 | /* Get the header in order to match the signature */ | |
147 | ||
148 | status = acpi_tb_get_table_header (address, &header); | |
149 | if (ACPI_FAILURE (status)) { | |
150 | return_ACPI_STATUS (status); | |
151 | } | |
152 | ||
153 | /* Signature must match request */ | |
154 | ||
155 | if (ACPI_STRNCMP (header.signature, signature, ACPI_NAME_SIZE)) { | |
156 | ACPI_REPORT_ERROR (("Incorrect table signature - wanted [%s] found [%4.4s]\n", | |
157 | signature, header.signature)); | |
158 | return_ACPI_STATUS (AE_BAD_SIGNATURE); | |
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; | |
166 | status = acpi_tb_recognize_table (table_info, ACPI_TABLE_SECONDARY); | |
167 | if (ACPI_FAILURE (status)) { | |
168 | return_ACPI_STATUS (status); | |
169 | } | |
170 | ||
171 | /* Get the entire table */ | |
172 | ||
173 | status = acpi_tb_get_table_body (address, &header, table_info); | |
174 | if (ACPI_FAILURE (status)) { | |
175 | return_ACPI_STATUS (status); | |
176 | } | |
177 | ||
178 | /* Install the table */ | |
179 | ||
180 | status = acpi_tb_install_table (table_info); | |
181 | return_ACPI_STATUS (status); | |
182 | } | |
183 | ||
184 | ||
185 | /******************************************************************************* | |
186 | * | |
187 | * FUNCTION: acpi_tb_get_required_tables | |
188 | * | |
189 | * PARAMETERS: None | |
190 | * | |
191 | * RETURN: Status | |
192 | * | |
193 | * DESCRIPTION: Load and validate tables other than the RSDT. The RSDT must | |
194 | * already be loaded and validated. | |
195 | * | |
196 | * Get the minimum set of ACPI tables, namely: | |
197 | * | |
198 | * 1) FADT (via RSDT in loop below) | |
199 | * 2) FACS (via FADT) | |
200 | * 3) DSDT (via FADT) | |
201 | * | |
202 | ******************************************************************************/ | |
203 | ||
204 | acpi_status | |
205 | acpi_tb_get_required_tables ( | |
206 | void) | |
207 | { | |
208 | acpi_status status = AE_OK; | |
209 | u32 i; | |
210 | struct acpi_table_desc table_info; | |
211 | struct acpi_pointer address; | |
212 | ||
213 | ||
214 | ACPI_FUNCTION_TRACE ("tb_get_required_tables"); | |
215 | ||
216 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "%d ACPI tables in RSDT\n", | |
217 | acpi_gbl_rsdt_table_count)); | |
218 | ||
219 | ||
220 | address.pointer_type = acpi_gbl_table_flags | ACPI_LOGICAL_ADDRESSING; | |
221 | ||
222 | /* | |
223 | * Loop through all table pointers found in RSDT. | |
224 | * This will NOT include the FACS and DSDT - we must get | |
225 | * them after the loop. | |
226 | * | |
227 | * The only tables we are interested in getting here is the FADT and | |
228 | * any SSDTs. | |
229 | */ | |
230 | for (i = 0; i < acpi_gbl_rsdt_table_count; i++) { | |
231 | /* Get the table address from the common internal XSDT */ | |
232 | ||
233 | address.pointer.value = acpi_gbl_XSDT->table_offset_entry[i]; | |
234 | ||
235 | /* | |
236 | * Get the tables needed by this subsystem (FADT and any SSDTs). | |
237 | * NOTE: All other tables are completely ignored at this time. | |
238 | */ | |
239 | status = acpi_tb_get_primary_table (&address, &table_info); | |
240 | if ((status != AE_OK) && (status != AE_TABLE_NOT_SUPPORTED)) { | |
241 | ACPI_REPORT_WARNING (("%s, while getting table at %8.8X%8.8X\n", | |
242 | acpi_format_exception (status), | |
243 | ACPI_FORMAT_UINT64 (address.pointer.value))); | |
244 | } | |
245 | } | |
246 | ||
247 | /* We must have a FADT to continue */ | |
248 | ||
249 | if (!acpi_gbl_FADT) { | |
250 | ACPI_REPORT_ERROR (("No FADT present in RSDT/XSDT\n")); | |
251 | return_ACPI_STATUS (AE_NO_ACPI_TABLES); | |
252 | } | |
253 | ||
254 | /* | |
255 | * Convert the FADT to a common format. This allows earlier revisions of the | |
256 | * table to coexist with newer versions, using common access code. | |
257 | */ | |
258 | status = acpi_tb_convert_table_fadt (); | |
259 | if (ACPI_FAILURE (status)) { | |
260 | ACPI_REPORT_ERROR (("Could not convert FADT to internal common format\n")); | |
261 | return_ACPI_STATUS (status); | |
262 | } | |
263 | ||
264 | /* | |
265 | * Get the FACS (Pointed to by the FADT) | |
266 | */ | |
267 | address.pointer.value = acpi_gbl_FADT->xfirmware_ctrl; | |
268 | ||
269 | status = acpi_tb_get_secondary_table (&address, FACS_SIG, &table_info); | |
270 | if (ACPI_FAILURE (status)) { | |
271 | ACPI_REPORT_ERROR (("Could not get/install the FACS, %s\n", | |
272 | acpi_format_exception (status))); | |
273 | return_ACPI_STATUS (status); | |
274 | } | |
275 | ||
276 | /* | |
277 | * Create the common FACS pointer table | |
278 | * (Contains pointers to the original table) | |
279 | */ | |
280 | status = acpi_tb_build_common_facs (&table_info); | |
281 | if (ACPI_FAILURE (status)) { | |
282 | return_ACPI_STATUS (status); | |
283 | } | |
284 | ||
285 | /* | |
286 | * Get/install the DSDT (Pointed to by the FADT) | |
287 | */ | |
288 | address.pointer.value = acpi_gbl_FADT->Xdsdt; | |
289 | ||
290 | status = acpi_tb_get_secondary_table (&address, DSDT_SIG, &table_info); | |
291 | if (ACPI_FAILURE (status)) { | |
292 | ACPI_REPORT_ERROR (("Could not get/install the DSDT\n")); | |
293 | return_ACPI_STATUS (status); | |
294 | } | |
295 | ||
296 | /* Set Integer Width (32/64) based upon DSDT revision */ | |
297 | ||
298 | acpi_ut_set_integer_width (acpi_gbl_DSDT->revision); | |
299 | ||
300 | /* Dump the entire DSDT */ | |
301 | ||
302 | ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, | |
303 | "Hex dump of entire DSDT, size %d (0x%X), Integer width = %d\n", | |
304 | acpi_gbl_DSDT->length, acpi_gbl_DSDT->length, acpi_gbl_integer_bit_width)); | |
305 | ACPI_DUMP_BUFFER ((u8 *) acpi_gbl_DSDT, acpi_gbl_DSDT->length); | |
306 | ||
307 | /* Always delete the RSDP mapping, we are done with it */ | |
308 | ||
309 | acpi_tb_delete_tables_by_type (ACPI_TABLE_RSDP); | |
310 | return_ACPI_STATUS (status); | |
311 | } | |
312 | ||
313 |