1 /******************************************************************************
2 *
3 * Module Name: tbgetall - Get all required ACPI tables
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2004, 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
acpi_tb_get_primary_table(struct acpi_pointer * address,struct acpi_table_desc * table_info)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
acpi_tb_get_secondary_table(struct acpi_pointer * address,acpi_string signature,struct acpi_table_desc * table_info)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
acpi_tb_get_required_tables(void)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
314