aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/acpi/tables/tbrsdt.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi/tables/tbrsdt.c')
-rw-r--r--drivers/acpi/tables/tbrsdt.c307
1 files changed, 0 insertions, 307 deletions
diff --git a/drivers/acpi/tables/tbrsdt.c b/drivers/acpi/tables/tbrsdt.c
deleted file mode 100644
index 86a5fca9b739..000000000000
--- a/drivers/acpi/tables/tbrsdt.c
+++ /dev/null
@@ -1,307 +0,0 @@
1/******************************************************************************
2 *
3 * Module Name: tbrsdt - ACPI RSDT table utilities
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2006, 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#include <acpi/acpi.h>
45#include <acpi/actables.h>
46
47#define _COMPONENT ACPI_TABLES
48ACPI_MODULE_NAME("tbrsdt")
49
50/*******************************************************************************
51 *
52 * FUNCTION: acpi_tb_verify_rsdp
53 *
54 * PARAMETERS: Address - RSDP (Pointer to RSDT)
55 *
56 * RETURN: Status
57 *
58 * DESCRIPTION: Load and validate the RSDP (ptr) and RSDT (table)
59 *
60 ******************************************************************************/
61acpi_status acpi_tb_verify_rsdp(struct acpi_pointer *address)
62{
63 struct acpi_table_desc table_info;
64 acpi_status status;
65 struct rsdp_descriptor *rsdp;
66
67 ACPI_FUNCTION_TRACE(tb_verify_rsdp);
68
69 switch (address->pointer_type) {
70 case ACPI_LOGICAL_POINTER:
71
72 rsdp = address->pointer.logical;
73 break;
74
75 case ACPI_PHYSICAL_POINTER:
76 /*
77 * Obtain access to the RSDP structure
78 */
79 status = acpi_os_map_memory(address->pointer.physical,
80 sizeof(struct rsdp_descriptor),
81 ACPI_CAST_PTR(void, &rsdp));
82 if (ACPI_FAILURE(status)) {
83 return_ACPI_STATUS(status);
84 }
85 break;
86
87 default:
88 return_ACPI_STATUS(AE_BAD_PARAMETER);
89 }
90
91 /* Verify RSDP signature and checksum */
92
93 status = acpi_tb_validate_rsdp(rsdp);
94 if (ACPI_FAILURE(status)) {
95 goto cleanup;
96 }
97
98 /* RSDP is ok. Init the table info */
99
100 table_info.pointer = ACPI_CAST_PTR(struct acpi_table_header, rsdp);
101 table_info.length = sizeof(struct rsdp_descriptor);
102
103 if (address->pointer_type == ACPI_PHYSICAL_POINTER) {
104 table_info.allocation = ACPI_MEM_MAPPED;
105 } else {
106 table_info.allocation = ACPI_MEM_NOT_ALLOCATED;
107 }
108
109 /* Save the table pointers and allocation info */
110
111 status = acpi_tb_init_table_descriptor(ACPI_TABLE_ID_RSDP, &table_info);
112 if (ACPI_FAILURE(status)) {
113 goto cleanup;
114 }
115
116 /* Save the RSDP in a global for easy access */
117
118 acpi_gbl_RSDP =
119 ACPI_CAST_PTR(struct rsdp_descriptor, table_info.pointer);
120 return_ACPI_STATUS(status);
121
122 /* Error exit */
123 cleanup:
124
125 if (acpi_gbl_table_flags & ACPI_PHYSICAL_POINTER) {
126 acpi_os_unmap_memory(rsdp, sizeof(struct rsdp_descriptor));
127 }
128 return_ACPI_STATUS(status);
129}
130
131/*******************************************************************************
132 *
133 * FUNCTION: acpi_tb_get_rsdt_address
134 *
135 * PARAMETERS: out_address - Where the address is returned
136 *
137 * RETURN: None, Address
138 *
139 * DESCRIPTION: Extract the address of either the RSDT or XSDT, depending on the
140 * version of the RSDP and whether the XSDT pointer is valid
141 *
142 ******************************************************************************/
143
144void acpi_tb_get_rsdt_address(struct acpi_pointer *out_address)
145{
146
147 ACPI_FUNCTION_ENTRY();
148
149 out_address->pointer_type =
150 acpi_gbl_table_flags | ACPI_LOGICAL_ADDRESSING;
151
152 /* Use XSDT if it is present */
153
154 if ((acpi_gbl_RSDP->revision >= 2) &&
155 acpi_gbl_RSDP->xsdt_physical_address) {
156 out_address->pointer.value =
157 acpi_gbl_RSDP->xsdt_physical_address;
158 acpi_gbl_root_table_type = ACPI_TABLE_TYPE_XSDT;
159 } else {
160 /* No XSDT, use the RSDT */
161
162 out_address->pointer.value =
163 acpi_gbl_RSDP->rsdt_physical_address;
164 acpi_gbl_root_table_type = ACPI_TABLE_TYPE_RSDT;
165 }
166}
167
168/*******************************************************************************
169 *
170 * FUNCTION: acpi_tb_validate_rsdt
171 *
172 * PARAMETERS: table_ptr - Addressable pointer to the RSDT.
173 *
174 * RETURN: Status
175 *
176 * DESCRIPTION: Validate signature for the RSDT or XSDT
177 *
178 ******************************************************************************/
179
180acpi_status acpi_tb_validate_rsdt(struct acpi_table_header *table_ptr)
181{
182 char *signature;
183
184 ACPI_FUNCTION_ENTRY();
185
186 /* Validate minimum length */
187
188 if (table_ptr->length < sizeof(struct acpi_table_header)) {
189 ACPI_ERROR((AE_INFO,
190 "RSDT/XSDT length (%X) is smaller than minimum (%zX)",
191 table_ptr->length,
192 sizeof(struct acpi_table_header)));
193
194 return (AE_INVALID_TABLE_LENGTH);
195 }
196
197 /* Search for appropriate signature, RSDT or XSDT */
198
199 if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) {
200 signature = RSDT_SIG;
201 } else {
202 signature = XSDT_SIG;
203 }
204
205 if (!ACPI_COMPARE_NAME(table_ptr->signature, signature)) {
206
207 /* Invalid RSDT or XSDT signature */
208
209 ACPI_ERROR((AE_INFO,
210 "Invalid signature where RSDP indicates RSDT/XSDT should be located. RSDP:"));
211
212 ACPI_DUMP_BUFFER(acpi_gbl_RSDP, 20);
213
214 ACPI_ERROR((AE_INFO,
215 "RSDT/XSDT signature at %X is invalid",
216 acpi_gbl_RSDP->rsdt_physical_address));
217
218 if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) {
219 ACPI_ERROR((AE_INFO, "Looking for RSDT"));
220 } else {
221 ACPI_ERROR((AE_INFO, "Looking for XSDT"));
222 }
223
224 ACPI_DUMP_BUFFER(ACPI_CAST_PTR(char, table_ptr), 48);
225 return (AE_BAD_SIGNATURE);
226 }
227
228 return (AE_OK);
229}
230
231/*******************************************************************************
232 *
233 * FUNCTION: acpi_tb_get_table_rsdt
234 *
235 * PARAMETERS: None
236 *
237 * RETURN: Status
238 *
239 * DESCRIPTION: Load and validate the RSDP (ptr) and RSDT (table)
240 *
241 ******************************************************************************/
242
243acpi_status acpi_tb_get_table_rsdt(void)
244{
245 struct acpi_table_desc table_info;
246 acpi_status status;
247 struct acpi_pointer address;
248
249 ACPI_FUNCTION_TRACE(tb_get_table_rsdt);
250
251 /* Get the RSDT/XSDT via the RSDP */
252
253 acpi_tb_get_rsdt_address(&address);
254
255 table_info.type = ACPI_TABLE_ID_XSDT;
256 status = acpi_tb_get_table(&address, &table_info);
257 if (ACPI_FAILURE(status)) {
258 ACPI_EXCEPTION((AE_INFO, status,
259 "Could not get the RSDT/XSDT"));
260 return_ACPI_STATUS(status);
261 }
262
263 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
264 "RSDP located at %p, points to RSDT physical=%8.8X%8.8X\n",
265 acpi_gbl_RSDP,
266 ACPI_FORMAT_UINT64(address.pointer.value)));
267
268 /* Check the RSDT or XSDT signature */
269
270 status = acpi_tb_validate_rsdt(table_info.pointer);
271 if (ACPI_FAILURE(status)) {
272 goto error_cleanup;
273 }
274
275 /* Get the number of tables defined in the RSDT or XSDT */
276
277 acpi_gbl_rsdt_table_count = acpi_tb_get_table_count(acpi_gbl_RSDP,
278 table_info.pointer);
279
280 /* Convert and/or copy to an XSDT structure */
281
282 status = acpi_tb_convert_to_xsdt(&table_info);
283 if (ACPI_FAILURE(status)) {
284 goto error_cleanup;
285 }
286
287 /* Save the table pointers and allocation info */
288
289 status = acpi_tb_init_table_descriptor(ACPI_TABLE_ID_XSDT, &table_info);
290 if (ACPI_FAILURE(status)) {
291 goto error_cleanup;
292 }
293
294 acpi_gbl_XSDT =
295 ACPI_CAST_PTR(struct xsdt_descriptor, table_info.pointer);
296
297 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "XSDT located at %p\n", acpi_gbl_XSDT));
298 return_ACPI_STATUS(status);
299
300 error_cleanup:
301
302 /* Free table allocated by acpi_tb_get_table */
303
304 acpi_tb_delete_single_table(&table_info);
305
306 return_ACPI_STATUS(status);
307}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-07 20:40:40 -0500