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path: root/drivers/acpi/tables/tbxfroot.c
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Diffstat (limited to 'drivers/acpi/tables/tbxfroot.c')
-rw-r--r--drivers/acpi/tables/tbxfroot.c431
1 files changed, 206 insertions, 225 deletions
diff --git a/drivers/acpi/tables/tbxfroot.c b/drivers/acpi/tables/tbxfroot.c
index 87dccdda9ae2..3b8a7e063e8a 100644
--- a/drivers/acpi/tables/tbxfroot.c
+++ b/drivers/acpi/tables/tbxfroot.c
@@ -46,22 +46,14 @@
46#include <acpi/acpi.h> 46#include <acpi/acpi.h>
47#include <acpi/actables.h> 47#include <acpi/actables.h>
48 48
49
50#define _COMPONENT ACPI_TABLES 49#define _COMPONENT ACPI_TABLES
51 ACPI_MODULE_NAME ("tbxfroot") 50ACPI_MODULE_NAME("tbxfroot")
52 51
53/* Local prototypes */ 52/* Local prototypes */
54
55static acpi_status 53static acpi_status
56acpi_tb_find_rsdp ( 54acpi_tb_find_rsdp(struct acpi_table_desc *table_info, u32 flags);
57 struct acpi_table_desc *table_info,
58 u32 flags);
59
60static u8 *
61acpi_tb_scan_memory_for_rsdp (
62 u8 *start_address,
63 u32 length);
64 55
56static u8 *acpi_tb_scan_memory_for_rsdp(u8 * start_address, u32 length);
65 57
66/******************************************************************************* 58/*******************************************************************************
67 * 59 *
@@ -75,17 +67,14 @@ acpi_tb_scan_memory_for_rsdp (
75 * 67 *
76 ******************************************************************************/ 68 ******************************************************************************/
77 69
78acpi_status 70acpi_status acpi_tb_validate_rsdp(struct rsdp_descriptor *rsdp)
79acpi_tb_validate_rsdp (
80 struct rsdp_descriptor *rsdp)
81{ 71{
82 ACPI_FUNCTION_ENTRY (); 72 ACPI_FUNCTION_ENTRY();
83
84 73
85 /* 74 /*
86 * The signature and checksum must both be correct 75 * The signature and checksum must both be correct
87 */ 76 */
88 if (ACPI_STRNCMP ((char *) rsdp, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0) { 77 if (ACPI_STRNCMP((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0) {
89 /* Nope, BAD Signature */ 78 /* Nope, BAD Signature */
90 79
91 return (AE_BAD_SIGNATURE); 80 return (AE_BAD_SIGNATURE);
@@ -93,21 +82,21 @@ acpi_tb_validate_rsdp (
93 82
94 /* Check the standard checksum */ 83 /* Check the standard checksum */
95 84
96 if (acpi_tb_generate_checksum (rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) { 85 if (acpi_tb_generate_checksum(rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
97 return (AE_BAD_CHECKSUM); 86 return (AE_BAD_CHECKSUM);
98 } 87 }
99 88
100 /* Check extended checksum if table version >= 2 */ 89 /* Check extended checksum if table version >= 2 */
101 90
102 if ((rsdp->revision >= 2) && 91 if ((rsdp->revision >= 2) &&
103 (acpi_tb_generate_checksum (rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0)) { 92 (acpi_tb_generate_checksum(rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) !=
93 0)) {
104 return (AE_BAD_CHECKSUM); 94 return (AE_BAD_CHECKSUM);
105 } 95 }
106 96
107 return (AE_OK); 97 return (AE_OK);
108} 98}
109 99
110
111/******************************************************************************* 100/*******************************************************************************
112 * 101 *
113 * FUNCTION: acpi_tb_find_table 102 * FUNCTION: acpi_tb_find_table
@@ -125,28 +114,24 @@ acpi_tb_validate_rsdp (
125 ******************************************************************************/ 114 ******************************************************************************/
126 115
127acpi_status 116acpi_status
128acpi_tb_find_table ( 117acpi_tb_find_table(char *signature,
129 char *signature, 118 char *oem_id,
130 char *oem_id, 119 char *oem_table_id, struct acpi_table_header ** table_ptr)
131 char *oem_table_id,
132 struct acpi_table_header **table_ptr)
133{ 120{
134 acpi_status status; 121 acpi_status status;
135 struct acpi_table_header *table; 122 struct acpi_table_header *table;
136
137
138 ACPI_FUNCTION_TRACE ("tb_find_table");
139 123
124 ACPI_FUNCTION_TRACE("tb_find_table");
140 125
141 /* Validate string lengths */ 126 /* Validate string lengths */
142 127
143 if ((ACPI_STRLEN (signature) > ACPI_NAME_SIZE) || 128 if ((ACPI_STRLEN(signature) > ACPI_NAME_SIZE) ||
144 (ACPI_STRLEN (oem_id) > sizeof (table->oem_id)) || 129 (ACPI_STRLEN(oem_id) > sizeof(table->oem_id)) ||
145 (ACPI_STRLEN (oem_table_id) > sizeof (table->oem_table_id))) { 130 (ACPI_STRLEN(oem_table_id) > sizeof(table->oem_table_id))) {
146 return_ACPI_STATUS (AE_AML_STRING_LIMIT); 131 return_ACPI_STATUS(AE_AML_STRING_LIMIT);
147 } 132 }
148 133
149 if (!ACPI_STRNCMP (signature, DSDT_SIG, ACPI_NAME_SIZE)) { 134 if (!ACPI_STRNCMP(signature, DSDT_SIG, ACPI_NAME_SIZE)) {
150 /* 135 /*
151 * The DSDT pointer is contained in the FADT, not the RSDT. 136 * The DSDT pointer is contained in the FADT, not the RSDT.
152 * This code should suffice, because the only code that would perform 137 * This code should suffice, because the only code that would perform
@@ -155,40 +140,36 @@ acpi_tb_find_table (
155 * If this becomes insufficient, the FADT will have to be found first. 140 * If this becomes insufficient, the FADT will have to be found first.
156 */ 141 */
157 if (!acpi_gbl_DSDT) { 142 if (!acpi_gbl_DSDT) {
158 return_ACPI_STATUS (AE_NO_ACPI_TABLES); 143 return_ACPI_STATUS(AE_NO_ACPI_TABLES);
159 } 144 }
160 table = acpi_gbl_DSDT; 145 table = acpi_gbl_DSDT;
161 } 146 } else {
162 else {
163 /* Find the table */ 147 /* Find the table */
164 148
165 status = acpi_get_firmware_table (signature, 1, 149 status = acpi_get_firmware_table(signature, 1,
166 ACPI_LOGICAL_ADDRESSING, &table); 150 ACPI_LOGICAL_ADDRESSING,
167 if (ACPI_FAILURE (status)) { 151 &table);
168 return_ACPI_STATUS (status); 152 if (ACPI_FAILURE(status)) {
153 return_ACPI_STATUS(status);
169 } 154 }
170 } 155 }
171 156
172 /* Check oem_id and oem_table_id */ 157 /* Check oem_id and oem_table_id */
173 158
174 if ((oem_id[0] && ACPI_STRNCMP ( 159 if ((oem_id[0] && ACPI_STRNCMP(oem_id, table->oem_id,
175 oem_id, table->oem_id, 160 sizeof(table->oem_id))) ||
176 sizeof (table->oem_id))) || 161 (oem_table_id[0] && ACPI_STRNCMP(oem_table_id, table->oem_table_id,
177 162 sizeof(table->oem_table_id)))) {
178 (oem_table_id[0] && ACPI_STRNCMP ( 163 return_ACPI_STATUS(AE_AML_NAME_NOT_FOUND);
179 oem_table_id, table->oem_table_id,
180 sizeof (table->oem_table_id)))) {
181 return_ACPI_STATUS (AE_AML_NAME_NOT_FOUND);
182 } 164 }
183 165
184 ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Found table [%4.4s]\n", 166 ACPI_DEBUG_PRINT((ACPI_DB_TABLES, "Found table [%4.4s]\n",
185 table->signature)); 167 table->signature));
186 168
187 *table_ptr = table; 169 *table_ptr = table;
188 return_ACPI_STATUS (AE_OK); 170 return_ACPI_STATUS(AE_OK);
189} 171}
190 172
191
192/******************************************************************************* 173/*******************************************************************************
193 * 174 *
194 * FUNCTION: acpi_get_firmware_table 175 * FUNCTION: acpi_get_firmware_table
@@ -209,34 +190,28 @@ acpi_tb_find_table (
209 ******************************************************************************/ 190 ******************************************************************************/
210 191
211acpi_status 192acpi_status
212acpi_get_firmware_table ( 193acpi_get_firmware_table(acpi_string signature,
213 acpi_string signature, 194 u32 instance,
214 u32 instance, 195 u32 flags, struct acpi_table_header **table_pointer)
215 u32 flags,
216 struct acpi_table_header **table_pointer)
217{ 196{
218 acpi_status status; 197 acpi_status status;
219 struct acpi_pointer address; 198 struct acpi_pointer address;
220 struct acpi_table_header *header = NULL; 199 struct acpi_table_header *header = NULL;
221 struct acpi_table_desc *table_info = NULL; 200 struct acpi_table_desc *table_info = NULL;
222 struct acpi_table_desc *rsdt_info; 201 struct acpi_table_desc *rsdt_info;
223 u32 table_count; 202 u32 table_count;
224 u32 i; 203 u32 i;
225 u32 j; 204 u32 j;
226
227
228 ACPI_FUNCTION_TRACE ("acpi_get_firmware_table");
229 205
206 ACPI_FUNCTION_TRACE("acpi_get_firmware_table");
230 207
231 /* 208 /*
232 * Ensure that at least the table manager is initialized. We don't 209 * Ensure that at least the table manager is initialized. We don't
233 * require that the entire ACPI subsystem is up for this interface. 210 * require that the entire ACPI subsystem is up for this interface.
234 * If we have a buffer, we must have a length too 211 * If we have a buffer, we must have a length too
235 */ 212 */
236 if ((instance == 0) || 213 if ((instance == 0) || (!signature) || (!table_pointer)) {
237 (!signature) || 214 return_ACPI_STATUS(AE_BAD_PARAMETER);
238 (!table_pointer)) {
239 return_ACPI_STATUS (AE_BAD_PARAMETER);
240 } 215 }
241 216
242 /* Ensure that we have a RSDP */ 217 /* Ensure that we have a RSDP */
@@ -244,40 +219,41 @@ acpi_get_firmware_table (
244 if (!acpi_gbl_RSDP) { 219 if (!acpi_gbl_RSDP) {
245 /* Get the RSDP */ 220 /* Get the RSDP */
246 221
247 status = acpi_os_get_root_pointer (flags, &address); 222 status = acpi_os_get_root_pointer(flags, &address);
248 if (ACPI_FAILURE (status)) { 223 if (ACPI_FAILURE(status)) {
249 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "RSDP not found\n")); 224 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "RSDP not found\n"));
250 return_ACPI_STATUS (AE_NO_ACPI_TABLES); 225 return_ACPI_STATUS(AE_NO_ACPI_TABLES);
251 } 226 }
252 227
253 /* Map and validate the RSDP */ 228 /* Map and validate the RSDP */
254 229
255 if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) { 230 if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) {
256 status = acpi_os_map_memory (address.pointer.physical, 231 status = acpi_os_map_memory(address.pointer.physical,
257 sizeof (struct rsdp_descriptor), (void *) &acpi_gbl_RSDP); 232 sizeof(struct
258 if (ACPI_FAILURE (status)) { 233 rsdp_descriptor),
259 return_ACPI_STATUS (status); 234 (void *)&acpi_gbl_RSDP);
235 if (ACPI_FAILURE(status)) {
236 return_ACPI_STATUS(status);
260 } 237 }
261 } 238 } else {
262 else {
263 acpi_gbl_RSDP = address.pointer.logical; 239 acpi_gbl_RSDP = address.pointer.logical;
264 } 240 }
265 241
266 /* The RDSP signature and checksum must both be correct */ 242 /* The RDSP signature and checksum must both be correct */
267 243
268 status = acpi_tb_validate_rsdp (acpi_gbl_RSDP); 244 status = acpi_tb_validate_rsdp(acpi_gbl_RSDP);
269 if (ACPI_FAILURE (status)) { 245 if (ACPI_FAILURE(status)) {
270 return_ACPI_STATUS (status); 246 return_ACPI_STATUS(status);
271 } 247 }
272 } 248 }
273 249
274 /* Get the RSDT address via the RSDP */ 250 /* Get the RSDT address via the RSDP */
275 251
276 acpi_tb_get_rsdt_address (&address); 252 acpi_tb_get_rsdt_address(&address);
277 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 253 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
278 "RSDP located at %p, RSDT physical=%8.8X%8.8X \n", 254 "RSDP located at %p, RSDT physical=%8.8X%8.8X \n",
279 acpi_gbl_RSDP, 255 acpi_gbl_RSDP,
280 ACPI_FORMAT_UINT64 (address.pointer.value))); 256 ACPI_FORMAT_UINT64(address.pointer.value)));
281 257
282 /* Insert processor_mode flags */ 258 /* Insert processor_mode flags */
283 259
@@ -285,30 +261,30 @@ acpi_get_firmware_table (
285 261
286 /* Get and validate the RSDT */ 262 /* Get and validate the RSDT */
287 263
288 rsdt_info = ACPI_MEM_CALLOCATE (sizeof (struct acpi_table_desc)); 264 rsdt_info = ACPI_MEM_CALLOCATE(sizeof(struct acpi_table_desc));
289 if (!rsdt_info) { 265 if (!rsdt_info) {
290 return_ACPI_STATUS (AE_NO_MEMORY); 266 return_ACPI_STATUS(AE_NO_MEMORY);
291 } 267 }
292 268
293 status = acpi_tb_get_table (&address, rsdt_info); 269 status = acpi_tb_get_table(&address, rsdt_info);
294 if (ACPI_FAILURE (status)) { 270 if (ACPI_FAILURE(status)) {
295 goto cleanup; 271 goto cleanup;
296 } 272 }
297 273
298 status = acpi_tb_validate_rsdt (rsdt_info->pointer); 274 status = acpi_tb_validate_rsdt(rsdt_info->pointer);
299 if (ACPI_FAILURE (status)) { 275 if (ACPI_FAILURE(status)) {
300 goto cleanup; 276 goto cleanup;
301 } 277 }
302 278
303 /* Allocate a scratch table header and table descriptor */ 279 /* Allocate a scratch table header and table descriptor */
304 280
305 header = ACPI_MEM_ALLOCATE (sizeof (struct acpi_table_header)); 281 header = ACPI_MEM_ALLOCATE(sizeof(struct acpi_table_header));
306 if (!header) { 282 if (!header) {
307 status = AE_NO_MEMORY; 283 status = AE_NO_MEMORY;
308 goto cleanup; 284 goto cleanup;
309 } 285 }
310 286
311 table_info = ACPI_MEM_ALLOCATE (sizeof (struct acpi_table_desc)); 287 table_info = ACPI_MEM_ALLOCATE(sizeof(struct acpi_table_desc));
312 if (!table_info) { 288 if (!table_info) {
313 status = AE_NO_MEMORY; 289 status = AE_NO_MEMORY;
314 goto cleanup; 290 goto cleanup;
@@ -316,7 +292,8 @@ acpi_get_firmware_table (
316 292
317 /* Get the number of table pointers within the RSDT */ 293 /* Get the number of table pointers within the RSDT */
318 294
319 table_count = acpi_tb_get_table_count (acpi_gbl_RSDP, rsdt_info->pointer); 295 table_count =
296 acpi_tb_get_table_count(acpi_gbl_RSDP, rsdt_info->pointer);
320 address.pointer_type = acpi_gbl_table_flags | flags; 297 address.pointer_type = acpi_gbl_table_flags | flags;
321 298
322 /* 299 /*
@@ -329,32 +306,37 @@ acpi_get_firmware_table (
329 * RSDT pointers are 32 bits, XSDT pointers are 64 bits 306 * RSDT pointers are 32 bits, XSDT pointers are 64 bits
330 */ 307 */
331 if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) { 308 if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) {
332 address.pointer.value = (ACPI_CAST_PTR ( 309 address.pointer.value =
333 RSDT_DESCRIPTOR, rsdt_info->pointer))->table_offset_entry[i]; 310 (ACPI_CAST_PTR
334 } 311 (RSDT_DESCRIPTOR,
335 else { 312 rsdt_info->pointer))->table_offset_entry[i];
336 address.pointer.value = (ACPI_CAST_PTR ( 313 } else {
337 XSDT_DESCRIPTOR, rsdt_info->pointer))->table_offset_entry[i]; 314 address.pointer.value =
315 (ACPI_CAST_PTR
316 (XSDT_DESCRIPTOR,
317 rsdt_info->pointer))->table_offset_entry[i];
338 } 318 }
339 319
340 /* Get the table header */ 320 /* Get the table header */
341 321
342 status = acpi_tb_get_table_header (&address, header); 322 status = acpi_tb_get_table_header(&address, header);
343 if (ACPI_FAILURE (status)) { 323 if (ACPI_FAILURE(status)) {
344 goto cleanup; 324 goto cleanup;
345 } 325 }
346 326
347 /* Compare table signatures and table instance */ 327 /* Compare table signatures and table instance */
348 328
349 if (!ACPI_STRNCMP (header->signature, signature, ACPI_NAME_SIZE)) { 329 if (!ACPI_STRNCMP(header->signature, signature, ACPI_NAME_SIZE)) {
350 /* An instance of the table was found */ 330 /* An instance of the table was found */
351 331
352 j++; 332 j++;
353 if (j >= instance) { 333 if (j >= instance) {
354 /* Found the correct instance, get the entire table */ 334 /* Found the correct instance, get the entire table */
355 335
356 status = acpi_tb_get_table_body (&address, header, table_info); 336 status =
357 if (ACPI_FAILURE (status)) { 337 acpi_tb_get_table_body(&address, header,
338 table_info);
339 if (ACPI_FAILURE(status)) {
358 goto cleanup; 340 goto cleanup;
359 } 341 }
360 342
@@ -368,24 +350,23 @@ acpi_get_firmware_table (
368 350
369 status = AE_NOT_EXIST; 351 status = AE_NOT_EXIST;
370 352
371 353 cleanup:
372cleanup:
373 if (rsdt_info->pointer) { 354 if (rsdt_info->pointer) {
374 acpi_os_unmap_memory (rsdt_info->pointer, 355 acpi_os_unmap_memory(rsdt_info->pointer,
375 (acpi_size) rsdt_info->pointer->length); 356 (acpi_size) rsdt_info->pointer->length);
376 } 357 }
377 ACPI_MEM_FREE (rsdt_info); 358 ACPI_MEM_FREE(rsdt_info);
378 359
379 if (header) { 360 if (header) {
380 ACPI_MEM_FREE (header); 361 ACPI_MEM_FREE(header);
381 } 362 }
382 if (table_info) { 363 if (table_info) {
383 ACPI_MEM_FREE (table_info); 364 ACPI_MEM_FREE(table_info);
384 } 365 }
385 return_ACPI_STATUS (status); 366 return_ACPI_STATUS(status);
386} 367}
387EXPORT_SYMBOL(acpi_get_firmware_table);
388 368
369EXPORT_SYMBOL(acpi_get_firmware_table);
389 370
390/* TBD: Move to a new file */ 371/* TBD: Move to a new file */
391 372
@@ -404,35 +385,29 @@ EXPORT_SYMBOL(acpi_get_firmware_table);
404 * 385 *
405 ******************************************************************************/ 386 ******************************************************************************/
406 387
407acpi_status 388acpi_status acpi_find_root_pointer(u32 flags, struct acpi_pointer *rsdp_address)
408acpi_find_root_pointer (
409 u32 flags,
410 struct acpi_pointer *rsdp_address)
411{ 389{
412 struct acpi_table_desc table_info; 390 struct acpi_table_desc table_info;
413 acpi_status status; 391 acpi_status status;
414
415
416 ACPI_FUNCTION_TRACE ("acpi_find_root_pointer");
417 392
393 ACPI_FUNCTION_TRACE("acpi_find_root_pointer");
418 394
419 /* Get the RSDP */ 395 /* Get the RSDP */
420 396
421 status = acpi_tb_find_rsdp (&table_info, flags); 397 status = acpi_tb_find_rsdp(&table_info, flags);
422 if (ACPI_FAILURE (status)) { 398 if (ACPI_FAILURE(status)) {
423 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 399 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
424 "RSDP structure not found, %s Flags=%X\n", 400 "RSDP structure not found, %s Flags=%X\n",
425 acpi_format_exception (status), flags)); 401 acpi_format_exception(status), flags));
426 402
427 return_ACPI_STATUS (AE_NO_ACPI_TABLES); 403 return_ACPI_STATUS(AE_NO_ACPI_TABLES);
428 } 404 }
429 405
430 rsdp_address->pointer_type = ACPI_PHYSICAL_POINTER; 406 rsdp_address->pointer_type = ACPI_PHYSICAL_POINTER;
431 rsdp_address->pointer.physical = table_info.physical_address; 407 rsdp_address->pointer.physical = table_info.physical_address;
432 return_ACPI_STATUS (AE_OK); 408 return_ACPI_STATUS(AE_OK);
433} 409}
434 410
435
436/******************************************************************************* 411/*******************************************************************************
437 * 412 *
438 * FUNCTION: acpi_tb_scan_memory_for_rsdp 413 * FUNCTION: acpi_tb_scan_memory_for_rsdp
@@ -446,34 +421,32 @@ acpi_find_root_pointer (
446 * 421 *
447 ******************************************************************************/ 422 ******************************************************************************/
448 423
449static u8 * 424static u8 *acpi_tb_scan_memory_for_rsdp(u8 * start_address, u32 length)
450acpi_tb_scan_memory_for_rsdp (
451 u8 *start_address,
452 u32 length)
453{ 425{
454 acpi_status status; 426 acpi_status status;
455 u8 *mem_rover; 427 u8 *mem_rover;
456 u8 *end_address; 428 u8 *end_address;
457
458
459 ACPI_FUNCTION_TRACE ("tb_scan_memory_for_rsdp");
460 429
430 ACPI_FUNCTION_TRACE("tb_scan_memory_for_rsdp");
461 431
462 end_address = start_address + length; 432 end_address = start_address + length;
463 433
464 /* Search from given start address for the requested length */ 434 /* Search from given start address for the requested length */
465 435
466 for (mem_rover = start_address; mem_rover < end_address; 436 for (mem_rover = start_address; mem_rover < end_address;
467 mem_rover += ACPI_RSDP_SCAN_STEP) { 437 mem_rover += ACPI_RSDP_SCAN_STEP) {
468 /* The RSDP signature and checksum must both be correct */ 438 /* The RSDP signature and checksum must both be correct */
469 439
470 status = acpi_tb_validate_rsdp (ACPI_CAST_PTR (struct rsdp_descriptor, mem_rover)); 440 status =
471 if (ACPI_SUCCESS (status)) { 441 acpi_tb_validate_rsdp(ACPI_CAST_PTR
442 (struct rsdp_descriptor, mem_rover));
443 if (ACPI_SUCCESS(status)) {
472 /* Sig and checksum valid, we have found a real RSDP */ 444 /* Sig and checksum valid, we have found a real RSDP */
473 445
474 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 446 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
475 "RSDP located at physical address %p\n", mem_rover)); 447 "RSDP located at physical address %p\n",
476 return_PTR (mem_rover); 448 mem_rover));
449 return_PTR(mem_rover);
477 } 450 }
478 451
479 /* No sig match or bad checksum, keep searching */ 452 /* No sig match or bad checksum, keep searching */
@@ -481,13 +454,12 @@ acpi_tb_scan_memory_for_rsdp (
481 454
482 /* Searched entire block, no RSDP was found */ 455 /* Searched entire block, no RSDP was found */
483 456
484 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 457 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
485 "Searched entire block from %p, valid RSDP was not found\n", 458 "Searched entire block from %p, valid RSDP was not found\n",
486 start_address)); 459 start_address));
487 return_PTR (NULL); 460 return_PTR(NULL);
488} 461}
489 462
490
491/******************************************************************************* 463/*******************************************************************************
492 * 464 *
493 * FUNCTION: acpi_tb_find_rsdp 465 * FUNCTION: acpi_tb_find_rsdp
@@ -511,18 +483,14 @@ acpi_tb_scan_memory_for_rsdp (
511 ******************************************************************************/ 483 ******************************************************************************/
512 484
513static acpi_status 485static acpi_status
514acpi_tb_find_rsdp ( 486acpi_tb_find_rsdp(struct acpi_table_desc *table_info, u32 flags)
515 struct acpi_table_desc *table_info,
516 u32 flags)
517{ 487{
518 u8 *table_ptr; 488 u8 *table_ptr;
519 u8 *mem_rover; 489 u8 *mem_rover;
520 u32 physical_address; 490 u32 physical_address;
521 acpi_status status; 491 acpi_status status;
522
523
524 ACPI_FUNCTION_TRACE ("tb_find_rsdp");
525 492
493 ACPI_FUNCTION_TRACE("tb_find_rsdp");
526 494
527 /* 495 /*
528 * Scan supports either logical addressing or physical addressing 496 * Scan supports either logical addressing or physical addressing
@@ -530,23 +498,25 @@ acpi_tb_find_rsdp (
530 if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) { 498 if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) {
531 /* 1a) Get the location of the Extended BIOS Data Area (EBDA) */ 499 /* 1a) Get the location of the Extended BIOS Data Area (EBDA) */
532 500
533 status = acpi_os_map_memory ( 501 status = acpi_os_map_memory((acpi_physical_address)
534 (acpi_physical_address) ACPI_EBDA_PTR_LOCATION, 502 ACPI_EBDA_PTR_LOCATION,
535 ACPI_EBDA_PTR_LENGTH, (void *) &table_ptr); 503 ACPI_EBDA_PTR_LENGTH,
536 if (ACPI_FAILURE (status)) { 504 (void *)&table_ptr);
537 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 505 if (ACPI_FAILURE(status)) {
538 "Could not map memory at %8.8X for length %X\n", 506 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
539 ACPI_EBDA_PTR_LOCATION, ACPI_EBDA_PTR_LENGTH)); 507 "Could not map memory at %8.8X for length %X\n",
540 508 ACPI_EBDA_PTR_LOCATION,
541 return_ACPI_STATUS (status); 509 ACPI_EBDA_PTR_LENGTH));
510
511 return_ACPI_STATUS(status);
542 } 512 }
543 513
544 ACPI_MOVE_16_TO_32 (&physical_address, table_ptr); 514 ACPI_MOVE_16_TO_32(&physical_address, table_ptr);
545 515
546 /* Convert segment part to physical address */ 516 /* Convert segment part to physical address */
547 517
548 physical_address <<= 4; 518 physical_address <<= 4;
549 acpi_os_unmap_memory (table_ptr, ACPI_EBDA_PTR_LENGTH); 519 acpi_os_unmap_memory(table_ptr, ACPI_EBDA_PTR_LENGTH);
550 520
551 /* EBDA present? */ 521 /* EBDA present? */
552 522
@@ -555,59 +525,67 @@ acpi_tb_find_rsdp (
555 * 1b) Search EBDA paragraphs (EBDa is required to be a 525 * 1b) Search EBDA paragraphs (EBDa is required to be a
556 * minimum of 1_k length) 526 * minimum of 1_k length)
557 */ 527 */
558 status = acpi_os_map_memory ( 528 status = acpi_os_map_memory((acpi_physical_address)
559 (acpi_physical_address) physical_address, 529 physical_address,
560 ACPI_EBDA_WINDOW_SIZE, (void *) &table_ptr); 530 ACPI_EBDA_WINDOW_SIZE,
561 if (ACPI_FAILURE (status)) { 531 (void *)&table_ptr);
562 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 532 if (ACPI_FAILURE(status)) {
563 "Could not map memory at %8.8X for length %X\n", 533 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
564 physical_address, ACPI_EBDA_WINDOW_SIZE)); 534 "Could not map memory at %8.8X for length %X\n",
565 535 physical_address,
566 return_ACPI_STATUS (status); 536 ACPI_EBDA_WINDOW_SIZE));
537
538 return_ACPI_STATUS(status);
567 } 539 }
568 540
569 mem_rover = acpi_tb_scan_memory_for_rsdp (table_ptr, 541 mem_rover = acpi_tb_scan_memory_for_rsdp(table_ptr,
570 ACPI_EBDA_WINDOW_SIZE); 542 ACPI_EBDA_WINDOW_SIZE);
571 acpi_os_unmap_memory (table_ptr, ACPI_EBDA_WINDOW_SIZE); 543 acpi_os_unmap_memory(table_ptr, ACPI_EBDA_WINDOW_SIZE);
572 544
573 if (mem_rover) { 545 if (mem_rover) {
574 /* Return the physical address */ 546 /* Return the physical address */
575 547
576 physical_address += ACPI_PTR_DIFF (mem_rover, table_ptr); 548 physical_address +=
549 ACPI_PTR_DIFF(mem_rover, table_ptr);
577 550
578 table_info->physical_address = 551 table_info->physical_address =
579 (acpi_physical_address) physical_address; 552 (acpi_physical_address) physical_address;
580 return_ACPI_STATUS (AE_OK); 553 return_ACPI_STATUS(AE_OK);
581 } 554 }
582 } 555 }
583 556
584 /* 557 /*
585 * 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh 558 * 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh
586 */ 559 */
587 status = acpi_os_map_memory ( 560 status = acpi_os_map_memory((acpi_physical_address)
588 (acpi_physical_address) ACPI_HI_RSDP_WINDOW_BASE, 561 ACPI_HI_RSDP_WINDOW_BASE,
589 ACPI_HI_RSDP_WINDOW_SIZE, (void *) &table_ptr); 562 ACPI_HI_RSDP_WINDOW_SIZE,
590 563 (void *)&table_ptr);
591 if (ACPI_FAILURE (status)) { 564
592 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 565 if (ACPI_FAILURE(status)) {
593 "Could not map memory at %8.8X for length %X\n", 566 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
594 ACPI_HI_RSDP_WINDOW_BASE, ACPI_HI_RSDP_WINDOW_SIZE)); 567 "Could not map memory at %8.8X for length %X\n",
595 568 ACPI_HI_RSDP_WINDOW_BASE,
596 return_ACPI_STATUS (status); 569 ACPI_HI_RSDP_WINDOW_SIZE));
570
571 return_ACPI_STATUS(status);
597 } 572 }
598 573
599 mem_rover = acpi_tb_scan_memory_for_rsdp (table_ptr, ACPI_HI_RSDP_WINDOW_SIZE); 574 mem_rover =
600 acpi_os_unmap_memory (table_ptr, ACPI_HI_RSDP_WINDOW_SIZE); 575 acpi_tb_scan_memory_for_rsdp(table_ptr,
576 ACPI_HI_RSDP_WINDOW_SIZE);
577 acpi_os_unmap_memory(table_ptr, ACPI_HI_RSDP_WINDOW_SIZE);
601 578
602 if (mem_rover) { 579 if (mem_rover) {
603 /* Return the physical address */ 580 /* Return the physical address */
604 581
605 physical_address = 582 physical_address =
606 ACPI_HI_RSDP_WINDOW_BASE + ACPI_PTR_DIFF (mem_rover, table_ptr); 583 ACPI_HI_RSDP_WINDOW_BASE + ACPI_PTR_DIFF(mem_rover,
584 table_ptr);
607 585
608 table_info->physical_address = 586 table_info->physical_address =
609 (acpi_physical_address) physical_address; 587 (acpi_physical_address) physical_address;
610 return_ACPI_STATUS (AE_OK); 588 return_ACPI_STATUS(AE_OK);
611 } 589 }
612 } 590 }
613 591
@@ -617,8 +595,8 @@ acpi_tb_find_rsdp (
617 else { 595 else {
618 /* 1a) Get the location of the EBDA */ 596 /* 1a) Get the location of the EBDA */
619 597
620 ACPI_MOVE_16_TO_32 (&physical_address, ACPI_EBDA_PTR_LOCATION); 598 ACPI_MOVE_16_TO_32(&physical_address, ACPI_EBDA_PTR_LOCATION);
621 physical_address <<= 4; /* Convert segment to physical address */ 599 physical_address <<= 4; /* Convert segment to physical address */
622 600
623 /* EBDA present? */ 601 /* EBDA present? */
624 602
@@ -627,35 +605,38 @@ acpi_tb_find_rsdp (
627 * 1b) Search EBDA paragraphs (EBDa is required to be a minimum of 605 * 1b) Search EBDA paragraphs (EBDa is required to be a minimum of
628 * 1_k length) 606 * 1_k length)
629 */ 607 */
630 mem_rover = acpi_tb_scan_memory_for_rsdp ( 608 mem_rover =
631 ACPI_PHYSADDR_TO_PTR (physical_address), 609 acpi_tb_scan_memory_for_rsdp(ACPI_PHYSADDR_TO_PTR
632 ACPI_EBDA_WINDOW_SIZE); 610 (physical_address),
611 ACPI_EBDA_WINDOW_SIZE);
633 if (mem_rover) { 612 if (mem_rover) {
634 /* Return the physical address */ 613 /* Return the physical address */
635 614
636 table_info->physical_address = ACPI_TO_INTEGER (mem_rover); 615 table_info->physical_address =
637 return_ACPI_STATUS (AE_OK); 616 ACPI_TO_INTEGER(mem_rover);
617 return_ACPI_STATUS(AE_OK);
638 } 618 }
639 } 619 }
640 620
641 /* 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh */ 621 /* 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh */
642 622
643 mem_rover = acpi_tb_scan_memory_for_rsdp ( 623 mem_rover =
644 ACPI_PHYSADDR_TO_PTR (ACPI_HI_RSDP_WINDOW_BASE), 624 acpi_tb_scan_memory_for_rsdp(ACPI_PHYSADDR_TO_PTR
645 ACPI_HI_RSDP_WINDOW_SIZE); 625 (ACPI_HI_RSDP_WINDOW_BASE),
626 ACPI_HI_RSDP_WINDOW_SIZE);
646 if (mem_rover) { 627 if (mem_rover) {
647 /* Found it, return the physical address */ 628 /* Found it, return the physical address */
648 629
649 table_info->physical_address = ACPI_TO_INTEGER (mem_rover); 630 table_info->physical_address =
650 return_ACPI_STATUS (AE_OK); 631 ACPI_TO_INTEGER(mem_rover);
632 return_ACPI_STATUS(AE_OK);
651 } 633 }
652 } 634 }
653 635
654 /* A valid RSDP was not found */ 636 /* A valid RSDP was not found */
655 637
656 ACPI_REPORT_ERROR (("No valid RSDP was found\n")); 638 ACPI_REPORT_ERROR(("No valid RSDP was found\n"));
657 return_ACPI_STATUS (AE_NOT_FOUND); 639 return_ACPI_STATUS(AE_NOT_FOUND);
658} 640}
659 641
660#endif 642#endif
661
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-26 06:05:35 -0500