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authorBob Moore <robert.moore@intel.com>2007-02-02 11:48:18 -0500
committerLen Brown <len.brown@intel.com>2007-02-02 21:14:21 -0500
commitf3d2e7865c816258c699ff965768e46b50d536d3 (patch)
tree83d21269e506109275b77d3ed161883bba8a39cf /drivers/acpi/tables
parent2e42005bcdb4f63bed1cea7f537a5534d4bd7a57 (diff)
ACPICA: Implement simplified Table Manager
The Table Manager component has been completely redesigned and reimplemented. The new design is much simpler, and reduces the overall code and data size of the kernel-resident ACPICA by approximately 5%. Also, it is now possible to obtain the ACPI tables very early during kernel initialization, even before dynamic memory management is initialized. Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/tables')
-rw-r--r--drivers/acpi/tables/tbconvrt.c622
-rw-r--r--drivers/acpi/tables/tbfind.c126
-rw-r--r--drivers/acpi/tables/tbget.c471
-rw-r--r--drivers/acpi/tables/tbgetall.c311
-rw-r--r--drivers/acpi/tables/tbinstal.c650
-rw-r--r--drivers/acpi/tables/tbrsdt.c307
-rw-r--r--drivers/acpi/tables/tbutils.c600
-rw-r--r--drivers/acpi/tables/tbxface.c620
-rw-r--r--drivers/acpi/tables/tbxfroot.c550
9 files changed, 1290 insertions, 2967 deletions
diff --git a/drivers/acpi/tables/tbconvrt.c b/drivers/acpi/tables/tbconvrt.c
deleted file mode 100644
index d697fcb35d52..000000000000
--- a/drivers/acpi/tables/tbconvrt.c
+++ /dev/null
@@ -1,622 +0,0 @@
1/******************************************************************************
2 *
3 * Module Name: tbconvrt - ACPI Table conversion 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("tbconvrt")
49
50/* Local prototypes */
51static void
52acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct,
53 u8 register_bit_width,
54 acpi_physical_address address);
55
56static void
57acpi_tb_convert_fadt1(struct fadt_descriptor *local_fadt,
58 struct fadt_descriptor_rev1 *original_fadt);
59
60static void
61acpi_tb_convert_fadt2(struct fadt_descriptor *local_fadt,
62 struct fadt_descriptor *original_fadt);
63
64u8 acpi_fadt_is_v1;
65ACPI_EXPORT_SYMBOL(acpi_fadt_is_v1)
66
67/*******************************************************************************
68 *
69 * FUNCTION: acpi_tb_get_table_count
70 *
71 * PARAMETERS: RSDP - Pointer to the RSDP
72 * RSDT - Pointer to the RSDT/XSDT
73 *
74 * RETURN: The number of tables pointed to by the RSDT or XSDT.
75 *
76 * DESCRIPTION: Calculate the number of tables. Automatically handles either
77 * an RSDT or XSDT.
78 *
79 ******************************************************************************/
80
81u32
82acpi_tb_get_table_count(struct rsdp_descriptor *RSDP,
83 struct acpi_table_header *RSDT)
84{
85 u32 pointer_size;
86
87 ACPI_FUNCTION_ENTRY();
88
89 /* RSDT pointers are 32 bits, XSDT pointers are 64 bits */
90
91 if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) {
92 pointer_size = sizeof(u32);
93 } else {
94 pointer_size = sizeof(u64);
95 }
96
97 /*
98 * Determine the number of tables pointed to by the RSDT/XSDT.
99 * This is defined by the ACPI Specification to be the number of
100 * pointers contained within the RSDT/XSDT. The size of the pointers
101 * is architecture-dependent.
102 */
103 return ((RSDT->length -
104 sizeof(struct acpi_table_header)) / pointer_size);
105}
106
107/*******************************************************************************
108 *
109 * FUNCTION: acpi_tb_convert_to_xsdt
110 *
111 * PARAMETERS: table_info - Info about the RSDT
112 *
113 * RETURN: Status
114 *
115 * DESCRIPTION: Convert an RSDT to an XSDT (internal common format)
116 *
117 ******************************************************************************/
118
119acpi_status acpi_tb_convert_to_xsdt(struct acpi_table_desc *table_info)
120{
121 acpi_size table_size;
122 u32 i;
123 struct xsdt_descriptor *new_table;
124
125 ACPI_FUNCTION_ENTRY();
126
127 /* Compute size of the converted XSDT */
128
129 table_size = ((acpi_size) acpi_gbl_rsdt_table_count * sizeof(u64)) +
130 sizeof(struct acpi_table_header);
131
132 /* Allocate an XSDT */
133
134 new_table = ACPI_ALLOCATE_ZEROED(table_size);
135 if (!new_table) {
136 return (AE_NO_MEMORY);
137 }
138
139 /* Copy the header and set the length */
140
141 ACPI_MEMCPY(new_table, table_info->pointer,
142 sizeof(struct acpi_table_header));
143 new_table->length = (u32) table_size;
144
145 /* Copy the table pointers */
146
147 for (i = 0; i < acpi_gbl_rsdt_table_count; i++) {
148
149 /* RSDT pointers are 32 bits, XSDT pointers are 64 bits */
150
151 if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) {
152 ACPI_STORE_ADDRESS(new_table->table_offset_entry[i],
153 (ACPI_CAST_PTR
154 (struct rsdt_descriptor,
155 table_info->pointer))->
156 table_offset_entry[i]);
157 } else {
158 new_table->table_offset_entry[i] =
159 (ACPI_CAST_PTR(struct xsdt_descriptor,
160 table_info->pointer))->
161 table_offset_entry[i];
162 }
163 }
164
165 /* Delete the original table (either mapped or in a buffer) */
166
167 acpi_tb_delete_single_table(table_info);
168
169 /* Point the table descriptor to the new table */
170
171 table_info->pointer =
172 ACPI_CAST_PTR(struct acpi_table_header, new_table);
173 table_info->length = table_size;
174 table_info->allocation = ACPI_MEM_ALLOCATED;
175
176 return (AE_OK);
177}
178
179/*******************************************************************************
180 *
181 * FUNCTION: acpi_tb_init_generic_address
182 *
183 * PARAMETERS: new_gas_struct - GAS struct to be initialized
184 * register_bit_width - Width of this register
185 * Address - Address of the register
186 *
187 * RETURN: None
188 *
189 * DESCRIPTION: Initialize a GAS structure.
190 *
191 ******************************************************************************/
192
193static void
194acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct,
195 u8 register_bit_width,
196 acpi_physical_address address)
197{
198
199 ACPI_STORE_ADDRESS(new_gas_struct->address, address);
200
201 new_gas_struct->address_space_id = ACPI_ADR_SPACE_SYSTEM_IO;
202 new_gas_struct->register_bit_width = register_bit_width;
203 new_gas_struct->register_bit_offset = 0;
204 new_gas_struct->access_width = 0;
205}
206
207/*******************************************************************************
208 *
209 * FUNCTION: acpi_tb_convert_fadt1
210 *
211 * PARAMETERS: local_fadt - Pointer to new FADT
212 * original_fadt - Pointer to old FADT
213 *
214 * RETURN: None, populates local_fadt
215 *
216 * DESCRIPTION: Convert an ACPI 1.0 FADT to common internal format
217 *
218 ******************************************************************************/
219
220static void
221acpi_tb_convert_fadt1(struct fadt_descriptor *local_fadt,
222 struct fadt_descriptor_rev1 *original_fadt)
223{
224
225 /* ACPI 1.0 FACS */
226 /* The BIOS stored FADT should agree with Revision 1.0 */
227 acpi_fadt_is_v1 = 1;
228
229 /*
230 * Copy the table header and the common part of the tables.
231 *
232 * The 2.0 table is an extension of the 1.0 table, so the entire 1.0
233 * table can be copied first, then expand some fields to 64 bits.
234 */
235 ACPI_MEMCPY(local_fadt, original_fadt,
236 sizeof(struct fadt_descriptor_rev1));
237
238 /* Convert table pointers to 64-bit fields */
239
240 ACPI_STORE_ADDRESS(local_fadt->xfirmware_ctrl,
241 local_fadt->V1_firmware_ctrl);
242 ACPI_STORE_ADDRESS(local_fadt->Xdsdt, local_fadt->V1_dsdt);
243
244 /*
245 * System Interrupt Model isn't used in ACPI 2.0
246 * (local_fadt->Reserved1 = 0;)
247 */
248
249 /*
250 * This field is set by the OEM to convey the preferred power management
251 * profile to OSPM. It doesn't have any 1.0 equivalence. Since we don't
252 * know what kind of 32-bit system this is, we will use "unspecified".
253 */
254 local_fadt->prefer_PM_profile = PM_UNSPECIFIED;
255
256 /*
257 * Processor Performance State Control. This is the value OSPM writes to
258 * the SMI_CMD register to assume processor performance state control
259 * responsibility. There isn't any equivalence in 1.0, but as many 1.x
260 * ACPI tables contain _PCT and _PSS we also keep this value, unless
261 * acpi_strict is set.
262 */
263 if (acpi_strict)
264 local_fadt->pstate_cnt = 0;
265
266 /*
267 * Support for the _CST object and C States change notification.
268 * This data item hasn't any 1.0 equivalence so leave it zero.
269 */
270 local_fadt->cst_cnt = 0;
271
272 /*
273 * FADT Rev 2 was an interim FADT released between ACPI 1.0 and ACPI 2.0.
274 * It primarily adds the FADT reset mechanism.
275 */
276 if ((original_fadt->revision == 2) &&
277 (original_fadt->length ==
278 sizeof(struct fadt_descriptor_rev2_minus))) {
279 /*
280 * Grab the entire generic address struct, plus the 1-byte reset value
281 * that immediately follows.
282 */
283 ACPI_MEMCPY(&local_fadt->reset_register,
284 &(ACPI_CAST_PTR(struct fadt_descriptor_rev2_minus,
285 original_fadt))->reset_register,
286 sizeof(struct acpi_generic_address) + 1);
287 } else {
288 /*
289 * Since there isn't any equivalence in 1.0 and since it is highly
290 * likely that a 1.0 system has legacy support.
291 */
292 local_fadt->iapc_boot_arch = BAF_LEGACY_DEVICES;
293 }
294
295 /*
296 * Convert the V1.0 block addresses to V2.0 GAS structures
297 */
298 acpi_tb_init_generic_address(&local_fadt->xpm1a_evt_blk,
299 local_fadt->pm1_evt_len,
300 (acpi_physical_address) local_fadt->
301 V1_pm1a_evt_blk);
302 acpi_tb_init_generic_address(&local_fadt->xpm1b_evt_blk,
303 local_fadt->pm1_evt_len,
304 (acpi_physical_address) local_fadt->
305 V1_pm1b_evt_blk);
306 acpi_tb_init_generic_address(&local_fadt->xpm1a_cnt_blk,
307 local_fadt->pm1_cnt_len,
308 (acpi_physical_address) local_fadt->
309 V1_pm1a_cnt_blk);
310 acpi_tb_init_generic_address(&local_fadt->xpm1b_cnt_blk,
311 local_fadt->pm1_cnt_len,
312 (acpi_physical_address) local_fadt->
313 V1_pm1b_cnt_blk);
314 acpi_tb_init_generic_address(&local_fadt->xpm2_cnt_blk,
315 local_fadt->pm2_cnt_len,
316 (acpi_physical_address) local_fadt->
317 V1_pm2_cnt_blk);
318 acpi_tb_init_generic_address(&local_fadt->xpm_tmr_blk,
319 local_fadt->pm_tm_len,
320 (acpi_physical_address) local_fadt->
321 V1_pm_tmr_blk);
322 acpi_tb_init_generic_address(&local_fadt->xgpe0_blk, 0,
323 (acpi_physical_address) local_fadt->
324 V1_gpe0_blk);
325 acpi_tb_init_generic_address(&local_fadt->xgpe1_blk, 0,
326 (acpi_physical_address) local_fadt->
327 V1_gpe1_blk);
328
329 /* Create separate GAS structs for the PM1 Enable registers */
330
331 acpi_tb_init_generic_address(&acpi_gbl_xpm1a_enable,
332 (u8) ACPI_DIV_2(acpi_gbl_FADT->
333 pm1_evt_len),
334 (acpi_physical_address)
335 (local_fadt->xpm1a_evt_blk.address +
336 ACPI_DIV_2(acpi_gbl_FADT->pm1_evt_len)));
337
338 /* PM1B is optional; leave null if not present */
339
340 if (local_fadt->xpm1b_evt_blk.address) {
341 acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable,
342 (u8) ACPI_DIV_2(acpi_gbl_FADT->
343 pm1_evt_len),
344 (acpi_physical_address)
345 (local_fadt->xpm1b_evt_blk.
346 address +
347 ACPI_DIV_2(acpi_gbl_FADT->
348 pm1_evt_len)));
349 }
350}
351
352/*******************************************************************************
353 *
354 * FUNCTION: acpi_tb_convert_fadt2
355 *
356 * PARAMETERS: local_fadt - Pointer to new FADT
357 * original_fadt - Pointer to old FADT
358 *
359 * RETURN: None, populates local_fadt
360 *
361 * DESCRIPTION: Convert an ACPI 2.0 FADT to common internal format.
362 * Handles optional "X" fields.
363 *
364 ******************************************************************************/
365
366static void
367acpi_tb_convert_fadt2(struct fadt_descriptor *local_fadt,
368 struct fadt_descriptor *original_fadt)
369{
370
371 /* We have an ACPI 2.0 FADT but we must copy it to our local buffer */
372
373 ACPI_MEMCPY(local_fadt, original_fadt, sizeof(struct fadt_descriptor));
374
375 /*
376 * "X" fields are optional extensions to the original V1.0 fields, so
377 * we must selectively expand V1.0 fields if the corresponding X field
378 * is zero.
379 */
380 if (!(local_fadt->xfirmware_ctrl)) {
381 ACPI_STORE_ADDRESS(local_fadt->xfirmware_ctrl,
382 local_fadt->V1_firmware_ctrl);
383 }
384
385 if (!(local_fadt->Xdsdt)) {
386 ACPI_STORE_ADDRESS(local_fadt->Xdsdt, local_fadt->V1_dsdt);
387 }
388
389 if (!(local_fadt->xpm1a_evt_blk.address)) {
390 acpi_tb_init_generic_address(&local_fadt->xpm1a_evt_blk,
391 local_fadt->pm1_evt_len,
392 (acpi_physical_address)
393 local_fadt->V1_pm1a_evt_blk);
394 }
395
396 if (!(local_fadt->xpm1b_evt_blk.address)) {
397 acpi_tb_init_generic_address(&local_fadt->xpm1b_evt_blk,
398 local_fadt->pm1_evt_len,
399 (acpi_physical_address)
400 local_fadt->V1_pm1b_evt_blk);
401 }
402
403 if (!(local_fadt->xpm1a_cnt_blk.address)) {
404 acpi_tb_init_generic_address(&local_fadt->xpm1a_cnt_blk,
405 local_fadt->pm1_cnt_len,
406 (acpi_physical_address)
407 local_fadt->V1_pm1a_cnt_blk);
408 }
409
410 if (!(local_fadt->xpm1b_cnt_blk.address)) {
411 acpi_tb_init_generic_address(&local_fadt->xpm1b_cnt_blk,
412 local_fadt->pm1_cnt_len,
413 (acpi_physical_address)
414 local_fadt->V1_pm1b_cnt_blk);
415 }
416
417 if (!(local_fadt->xpm2_cnt_blk.address)) {
418 acpi_tb_init_generic_address(&local_fadt->xpm2_cnt_blk,
419 local_fadt->pm2_cnt_len,
420 (acpi_physical_address)
421 local_fadt->V1_pm2_cnt_blk);
422 }
423
424 if (!(local_fadt->xpm_tmr_blk.address)) {
425 acpi_tb_init_generic_address(&local_fadt->xpm_tmr_blk,
426 local_fadt->pm_tm_len,
427 (acpi_physical_address)
428 local_fadt->V1_pm_tmr_blk);
429 }
430
431 if (!(local_fadt->xgpe0_blk.address)) {
432 acpi_tb_init_generic_address(&local_fadt->xgpe0_blk,
433 0,
434 (acpi_physical_address)
435 local_fadt->V1_gpe0_blk);
436 }
437
438 if (!(local_fadt->xgpe1_blk.address)) {
439 acpi_tb_init_generic_address(&local_fadt->xgpe1_blk,
440 0,
441 (acpi_physical_address)
442 local_fadt->V1_gpe1_blk);
443 }
444
445 /* Create separate GAS structs for the PM1 Enable registers */
446
447 acpi_tb_init_generic_address(&acpi_gbl_xpm1a_enable,
448 (u8) ACPI_DIV_2(acpi_gbl_FADT->
449 pm1_evt_len),
450 (acpi_physical_address)
451 (local_fadt->xpm1a_evt_blk.address +
452 ACPI_DIV_2(acpi_gbl_FADT->pm1_evt_len)));
453
454 acpi_gbl_xpm1a_enable.address_space_id =
455 local_fadt->xpm1a_evt_blk.address_space_id;
456
457 /* PM1B is optional; leave null if not present */
458
459 if (local_fadt->xpm1b_evt_blk.address) {
460 acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable,
461 (u8) ACPI_DIV_2(acpi_gbl_FADT->
462 pm1_evt_len),
463 (acpi_physical_address)
464 (local_fadt->xpm1b_evt_blk.
465 address +
466 ACPI_DIV_2(acpi_gbl_FADT->
467 pm1_evt_len)));
468
469 acpi_gbl_xpm1b_enable.address_space_id =
470 local_fadt->xpm1b_evt_blk.address_space_id;
471 }
472}
473
474/*******************************************************************************
475 *
476 * FUNCTION: acpi_tb_convert_table_fadt
477 *
478 * PARAMETERS: None
479 *
480 * RETURN: Status
481 *
482 * DESCRIPTION: Converts a BIOS supplied ACPI 1.0 FADT to a local
483 * ACPI 2.0 FADT. If the BIOS supplied a 2.0 FADT then it is simply
484 * copied to the local FADT. The ACPI CA software uses this
485 * local FADT. Thus a significant amount of special #ifdef
486 * type codeing is saved.
487 *
488 ******************************************************************************/
489
490acpi_status acpi_tb_convert_table_fadt(void)
491{
492 struct fadt_descriptor *local_fadt;
493 struct acpi_table_desc *table_desc;
494
495 ACPI_FUNCTION_TRACE(tb_convert_table_fadt);
496
497 /*
498 * acpi_gbl_FADT is valid. Validate the FADT length. The table must be
499 * at least as long as the version 1.0 FADT
500 */
501 if (acpi_gbl_FADT->length < sizeof(struct fadt_descriptor_rev1)) {
502 ACPI_ERROR((AE_INFO, "FADT is invalid, too short: 0x%X",
503 acpi_gbl_FADT->length));
504 return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH);
505 }
506
507 /* Allocate buffer for the ACPI 2.0(+) FADT */
508
509 local_fadt = ACPI_ALLOCATE_ZEROED(sizeof(struct fadt_descriptor));
510 if (!local_fadt) {
511 return_ACPI_STATUS(AE_NO_MEMORY);
512 }
513
514 if (acpi_gbl_FADT->revision >= FADT2_REVISION_ID) {
515 if (acpi_gbl_FADT->length < sizeof(struct fadt_descriptor)) {
516
517 /* Length is too short to be a V2.0 table */
518
519 ACPI_WARNING((AE_INFO,
520 "Inconsistent FADT length (0x%X) and revision (0x%X), using FADT V1.0 portion of table",
521 acpi_gbl_FADT->length,
522 acpi_gbl_FADT->revision));
523
524 acpi_tb_convert_fadt1(local_fadt,
525 (void *)acpi_gbl_FADT);
526 } else {
527 /* Valid V2.0 table */
528
529 acpi_tb_convert_fadt2(local_fadt, acpi_gbl_FADT);
530 }
531 } else {
532 /* Valid V1.0 table */
533
534 acpi_tb_convert_fadt1(local_fadt, (void *)acpi_gbl_FADT);
535 }
536
537 /* Global FADT pointer will point to the new common V2.0 FADT */
538
539 acpi_gbl_FADT = local_fadt;
540 acpi_gbl_FADT->length = sizeof(struct fadt_descriptor);
541
542 /* Free the original table */
543
544 table_desc = acpi_gbl_table_lists[ACPI_TABLE_ID_FADT].next;
545 acpi_tb_delete_single_table(table_desc);
546
547 /* Install the new table */
548
549 table_desc->pointer =
550 ACPI_CAST_PTR(struct acpi_table_header, acpi_gbl_FADT);
551 table_desc->allocation = ACPI_MEM_ALLOCATED;
552 table_desc->length = sizeof(struct fadt_descriptor);
553
554 /* Dump the entire FADT */
555
556 ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
557 "Hex dump of common internal FADT, size %d (%X)\n",
558 acpi_gbl_FADT->length, acpi_gbl_FADT->length));
559
560 ACPI_DUMP_BUFFER(ACPI_CAST_PTR(u8, acpi_gbl_FADT),
561 acpi_gbl_FADT->length);
562
563 return_ACPI_STATUS(AE_OK);
564}
565
566/*******************************************************************************
567 *
568 * FUNCTION: acpi_tb_build_common_facs
569 *
570 * PARAMETERS: table_info - Info for currently installed FACS
571 *
572 * RETURN: Status
573 *
574 * DESCRIPTION: Convert ACPI 1.0 and ACPI 2.0 FACS to a common internal
575 * table format.
576 *
577 ******************************************************************************/
578
579acpi_status acpi_tb_build_common_facs(struct acpi_table_desc *table_info)
580{
581
582 ACPI_FUNCTION_TRACE(tb_build_common_facs);
583
584 /* Absolute minimum length is 24, but the ACPI spec says 64 */
585
586 if (acpi_gbl_FACS->length < 24) {
587 ACPI_ERROR((AE_INFO, "Invalid FACS table length: 0x%X",
588 acpi_gbl_FACS->length));
589 return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH);
590 }
591
592 if (acpi_gbl_FACS->length < 64) {
593 ACPI_WARNING((AE_INFO,
594 "FACS is shorter than the ACPI specification allows: 0x%X, using anyway",
595 acpi_gbl_FACS->length));
596 }
597
598 /* Copy fields to the new FACS */
599
600 acpi_gbl_common_fACS.global_lock = &(acpi_gbl_FACS->global_lock);
601
602 if ((acpi_gbl_RSDP->revision < 2) ||
603 (acpi_gbl_FACS->length < 32) ||
604 (!(acpi_gbl_FACS->xfirmware_waking_vector))) {
605
606 /* ACPI 1.0 FACS or short table or optional X_ field is zero */
607
608 acpi_gbl_common_fACS.firmware_waking_vector = ACPI_CAST_PTR(u64,
609 &
610 (acpi_gbl_FACS->
611 firmware_waking_vector));
612 acpi_gbl_common_fACS.vector_width = 32;
613 } else {
614 /* ACPI 2.0 FACS with valid X_ field */
615
616 acpi_gbl_common_fACS.firmware_waking_vector =
617 &acpi_gbl_FACS->xfirmware_waking_vector;
618 acpi_gbl_common_fACS.vector_width = 64;
619 }
620
621 return_ACPI_STATUS(AE_OK);
622}
diff --git a/drivers/acpi/tables/tbfind.c b/drivers/acpi/tables/tbfind.c
new file mode 100644
index 000000000000..769213c74c16
--- /dev/null
+++ b/drivers/acpi/tables/tbfind.c
@@ -0,0 +1,126 @@
1/******************************************************************************
2 *
3 * Module Name: tbfind - find table
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("tbfind")
49
50/*******************************************************************************
51 *
52 * FUNCTION: acpi_tb_find_table
53 *
54 * PARAMETERS: Signature - String with ACPI table signature
55 * oem_id - String with the table OEM ID
56 * oem_table_id - String with the OEM Table ID
57 * table_index - Where the table index is returned
58 *
59 * RETURN: Status and table index
60 *
61 * DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the
62 * Signature, OEM ID and OEM Table ID. Returns an index that can
63 * be used to get the table header or entire table.
64 *
65 ******************************************************************************/
66acpi_status
67acpi_tb_find_table(char *signature,
68 char *oem_id,
69 char *oem_table_id, acpi_native_uint * table_index)
70{
71 acpi_native_uint i;
72 acpi_status status;
73
74 ACPI_FUNCTION_TRACE(tb_find_table);
75
76 for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
77 if (ACPI_MEMCMP(&(acpi_gbl_root_table_list.tables[i].signature),
78 signature, ACPI_NAME_SIZE)) {
79
80 /* Not the requested table */
81
82 continue;
83 }
84
85 /* Table with matching signature has been found */
86
87 if (!acpi_gbl_root_table_list.tables[i].pointer) {
88
89 /* Table is not currently mapped, map it */
90
91 status =
92 acpi_tb_verify_table(&acpi_gbl_root_table_list.
93 tables[i]);
94 if (ACPI_FAILURE(status)) {
95 return_ACPI_STATUS(status);
96 }
97
98 if (!acpi_gbl_root_table_list.tables[i].pointer) {
99 continue;
100 }
101 }
102
103 /* Check for table match on all IDs */
104
105 if (!ACPI_MEMCMP
106 (acpi_gbl_root_table_list.tables[i].pointer->signature,
107 signature, ACPI_NAME_SIZE) && (!oem_id[0]
108 ||
109 !ACPI_MEMCMP
110 (acpi_gbl_root_table_list.
111 tables[i].pointer->oem_id,
112 oem_id, ACPI_OEM_ID_SIZE))
113 && (!oem_table_id[0]
114 || !ACPI_MEMCMP(acpi_gbl_root_table_list.tables[i].
115 pointer->oem_table_id, oem_table_id,
116 ACPI_OEM_TABLE_ID_SIZE))) {
117 *table_index = i;
118
119 ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
120 "Found table [%4.4s]\n", signature));
121 return_ACPI_STATUS(AE_OK);
122 }
123 }
124
125 return_ACPI_STATUS(AE_NOT_FOUND);
126}
diff --git a/drivers/acpi/tables/tbget.c b/drivers/acpi/tables/tbget.c
deleted file mode 100644
index 11e2d4454e05..000000000000
--- a/drivers/acpi/tables/tbget.c
+++ /dev/null
@@ -1,471 +0,0 @@
1/******************************************************************************
2 *
3 * Module Name: tbget - ACPI Table get* routines
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("tbget")
49
50/* Local prototypes */
51static acpi_status
52acpi_tb_get_this_table(struct acpi_pointer *address,
53 struct acpi_table_header *header,
54 struct acpi_table_desc *table_info);
55
56static acpi_status
57acpi_tb_table_override(struct acpi_table_header *header,
58 struct acpi_table_desc *table_info);
59
60/*******************************************************************************
61 *
62 * FUNCTION: acpi_tb_get_table
63 *
64 * PARAMETERS: Address - Address of table to retrieve. Can be
65 * Logical or Physical
66 * table_info - Where table info is returned
67 *
68 * RETURN: None
69 *
70 * DESCRIPTION: Get entire table of unknown size.
71 *
72 ******************************************************************************/
73
74acpi_status
75acpi_tb_get_table(struct acpi_pointer *address,
76 struct acpi_table_desc *table_info)
77{
78 acpi_status status;
79 struct acpi_table_header header;
80
81 ACPI_FUNCTION_TRACE(tb_get_table);
82
83 /* Get the header in order to get signature and table size */
84
85 status = acpi_tb_get_table_header(address, &header);
86 if (ACPI_FAILURE(status)) {
87 return_ACPI_STATUS(status);
88 }
89
90 /* Get the entire table */
91
92 status = acpi_tb_get_table_body(address, &header, table_info);
93 if (ACPI_FAILURE(status)) {
94 ACPI_EXCEPTION((AE_INFO, status,
95 "Could not get ACPI table (size %X)",
96 header.length));
97 return_ACPI_STATUS(status);
98 }
99
100 return_ACPI_STATUS(AE_OK);
101}
102
103/*******************************************************************************
104 *
105 * FUNCTION: acpi_tb_get_table_header
106 *
107 * PARAMETERS: Address - Address of table to retrieve. Can be
108 * Logical or Physical
109 * return_header - Where the table header is returned
110 *
111 * RETURN: Status
112 *
113 * DESCRIPTION: Get an ACPI table header. Works in both physical or virtual
114 * addressing mode. Works with both physical or logical pointers.
115 * Table is either copied or mapped, depending on the pointer
116 * type and mode of the processor.
117 *
118 ******************************************************************************/
119
120acpi_status
121acpi_tb_get_table_header(struct acpi_pointer *address,
122 struct acpi_table_header *return_header)
123{
124 acpi_status status = AE_OK;
125 struct acpi_table_header *header = NULL;
126
127 ACPI_FUNCTION_TRACE(tb_get_table_header);
128
129 /*
130 * Flags contains the current processor mode (Virtual or Physical
131 * addressing) The pointer_type is either Logical or Physical
132 */
133 switch (address->pointer_type) {
134 case ACPI_PHYSMODE_PHYSPTR:
135 case ACPI_LOGMODE_LOGPTR:
136
137 /* Pointer matches processor mode, copy the header */
138
139 ACPI_MEMCPY(return_header, address->pointer.logical,
140 sizeof(struct acpi_table_header));
141 break;
142
143 case ACPI_LOGMODE_PHYSPTR:
144
145 /* Create a logical address for the physical pointer */
146
147 status = acpi_os_map_memory(address->pointer.physical,
148 sizeof(struct acpi_table_header),
149 (void *)&header);
150 if (ACPI_FAILURE(status)) {
151 ACPI_ERROR((AE_INFO,
152 "Could not map memory at %8.8X%8.8X for table header",
153 ACPI_FORMAT_UINT64(address->pointer.
154 physical)));
155 return_ACPI_STATUS(status);
156 }
157
158 /* Copy header and delete mapping */
159
160 ACPI_MEMCPY(return_header, header,
161 sizeof(struct acpi_table_header));
162 acpi_os_unmap_memory(header, sizeof(struct acpi_table_header));
163 break;
164
165 default:
166
167 ACPI_ERROR((AE_INFO, "Invalid address flags %X",
168 address->pointer_type));
169 return_ACPI_STATUS(AE_BAD_PARAMETER);
170 }
171
172 ACPI_DEBUG_PRINT((ACPI_DB_TABLES, "Table Signature: [%4.4s]\n",
173 return_header->signature));
174
175 return_ACPI_STATUS(AE_OK);
176}
177
178/*******************************************************************************
179 *
180 * FUNCTION: acpi_tb_get_table_body
181 *
182 * PARAMETERS: Address - Address of table to retrieve. Can be
183 * Logical or Physical
184 * Header - Header of the table to retrieve
185 * table_info - Where the table info is returned
186 *
187 * RETURN: Status
188 *
189 * DESCRIPTION: Get an entire ACPI table with support to allow the host OS to
190 * replace the table with a newer version (table override.)
191 * Works in both physical or virtual
192 * addressing mode. Works with both physical or logical pointers.
193 * Table is either copied or mapped, depending on the pointer
194 * type and mode of the processor.
195 *
196 ******************************************************************************/
197
198acpi_status
199acpi_tb_get_table_body(struct acpi_pointer *address,
200 struct acpi_table_header *header,
201 struct acpi_table_desc *table_info)
202{
203 acpi_status status;
204
205 ACPI_FUNCTION_TRACE(tb_get_table_body);
206
207 if (!table_info || !address) {
208 return_ACPI_STATUS(AE_BAD_PARAMETER);
209 }
210
211 /* Attempt table override. */
212
213 status = acpi_tb_table_override(header, table_info);
214 if (ACPI_SUCCESS(status)) {
215
216 /* Table was overridden by the host OS */
217
218 return_ACPI_STATUS(status);
219 }
220
221 /* No override, get the original table */
222
223 status = acpi_tb_get_this_table(address, header, table_info);
224 return_ACPI_STATUS(status);
225}
226
227/*******************************************************************************
228 *
229 * FUNCTION: acpi_tb_table_override
230 *
231 * PARAMETERS: Header - Pointer to table header
232 * table_info - Return info if table is overridden
233 *
234 * RETURN: None
235 *
236 * DESCRIPTION: Attempts override of current table with a new one if provided
237 * by the host OS.
238 *
239 ******************************************************************************/
240
241static acpi_status
242acpi_tb_table_override(struct acpi_table_header *header,
243 struct acpi_table_desc *table_info)
244{
245 struct acpi_table_header *new_table;
246 acpi_status status;
247 struct acpi_pointer address;
248
249 ACPI_FUNCTION_TRACE(tb_table_override);
250
251 /*
252 * The OSL will examine the header and decide whether to override this
253 * table. If it decides to override, a table will be returned in new_table,
254 * which we will then copy.
255 */
256 status = acpi_os_table_override(header, &new_table);
257 if (ACPI_FAILURE(status)) {
258
259 /* Some severe error from the OSL, but we basically ignore it */
260
261 ACPI_EXCEPTION((AE_INFO, status,
262 "Could not override ACPI table"));
263 return_ACPI_STATUS(status);
264 }
265
266 if (!new_table) {
267
268 /* No table override */
269
270 return_ACPI_STATUS(AE_NO_ACPI_TABLES);
271 }
272
273 /*
274 * We have a new table to override the old one. Get a copy of
275 * the new one. We know that the new table has a logical pointer.
276 */
277 address.pointer_type = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
278 address.pointer.logical = new_table;
279
280 status = acpi_tb_get_this_table(&address, new_table, table_info);
281 if (ACPI_FAILURE(status)) {
282 ACPI_EXCEPTION((AE_INFO, status, "Could not copy ACPI table"));
283 return_ACPI_STATUS(status);
284 }
285
286 /* Copy the table info */
287
288 ACPI_INFO((AE_INFO, "Table [%4.4s] replaced by host OS",
289 table_info->pointer->signature));
290
291 return_ACPI_STATUS(AE_OK);
292}
293
294/*******************************************************************************
295 *
296 * FUNCTION: acpi_tb_get_this_table
297 *
298 * PARAMETERS: Address - Address of table to retrieve. Can be
299 * Logical or Physical
300 * Header - Header of the table to retrieve
301 * table_info - Where the table info is returned
302 *
303 * RETURN: Status
304 *
305 * DESCRIPTION: Get an entire ACPI table. Works in both physical or virtual
306 * addressing mode. Works with both physical or logical pointers.
307 * Table is either copied or mapped, depending on the pointer
308 * type and mode of the processor.
309 *
310 ******************************************************************************/
311
312static acpi_status
313acpi_tb_get_this_table(struct acpi_pointer *address,
314 struct acpi_table_header *header,
315 struct acpi_table_desc *table_info)
316{
317 struct acpi_table_header *full_table = NULL;
318 u8 allocation;
319 acpi_status status = AE_OK;
320
321 ACPI_FUNCTION_TRACE(tb_get_this_table);
322
323 /* Validate minimum length */
324
325 if (header->length < sizeof(struct acpi_table_header)) {
326 ACPI_ERROR((AE_INFO,
327 "Table length (%X) is smaller than minimum (%zX)",
328 header->length, sizeof(struct acpi_table_header)));
329
330 return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH);
331 }
332
333 /*
334 * Flags contains the current processor mode (Virtual or Physical
335 * addressing) The pointer_type is either Logical or Physical
336 */
337 switch (address->pointer_type) {
338 case ACPI_PHYSMODE_PHYSPTR:
339 case ACPI_LOGMODE_LOGPTR:
340
341 /* Pointer matches processor mode, copy the table to a new buffer */
342
343 full_table = ACPI_ALLOCATE(header->length);
344 if (!full_table) {
345 ACPI_ERROR((AE_INFO,
346 "Could not allocate table memory for [%4.4s] length %X",
347 header->signature, header->length));
348 return_ACPI_STATUS(AE_NO_MEMORY);
349 }
350
351 /* Copy the entire table (including header) to the local buffer */
352
353 ACPI_MEMCPY(full_table, address->pointer.logical,
354 header->length);
355
356 /* Save allocation type */
357
358 allocation = ACPI_MEM_ALLOCATED;
359 break;
360
361 case ACPI_LOGMODE_PHYSPTR:
362
363 /*
364 * Just map the table's physical memory
365 * into our address space.
366 */
367 status = acpi_os_map_memory(address->pointer.physical,
368 (acpi_size) header->length,
369 ACPI_CAST_PTR(void, &full_table));
370 if (ACPI_FAILURE(status)) {
371 ACPI_ERROR((AE_INFO,
372 "Could not map memory for table [%4.4s] at %8.8X%8.8X for length %X",
373 header->signature,
374 ACPI_FORMAT_UINT64(address->pointer.
375 physical),
376 header->length));
377 return (status);
378 }
379
380 /* Save allocation type */
381
382 allocation = ACPI_MEM_MAPPED;
383 break;
384
385 default:
386
387 ACPI_ERROR((AE_INFO, "Invalid address flags %X",
388 address->pointer_type));
389 return_ACPI_STATUS(AE_BAD_PARAMETER);
390 }
391
392 /*
393 * Validate checksum for _most_ tables,
394 * even the ones whose signature we don't recognize
395 */
396 if (table_info->type != ACPI_TABLE_ID_FACS) {
397 status = acpi_tb_verify_table_checksum(full_table);
398
399#if (!ACPI_CHECKSUM_ABORT)
400 if (ACPI_FAILURE(status)) {
401
402 /* Ignore the error if configuration says so */
403
404 status = AE_OK;
405 }
406#endif
407 }
408
409 /* Return values */
410
411 table_info->pointer = full_table;
412 table_info->length = (acpi_size) header->length;
413 table_info->allocation = allocation;
414
415 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
416 "Found table [%4.4s] at %8.8X%8.8X, mapped/copied to %p\n",
417 full_table->signature,
418 ACPI_FORMAT_UINT64(address->pointer.physical),
419 full_table));
420
421 return_ACPI_STATUS(status);
422}
423
424/*******************************************************************************
425 *
426 * FUNCTION: acpi_tb_get_table_ptr
427 *
428 * PARAMETERS: table_type - one of the defined table types
429 * Instance - Which table of this type
430 * return_table - pointer to location to place the pointer for
431 * return
432 *
433 * RETURN: Status
434 *
435 * DESCRIPTION: This function is called to get the pointer to an ACPI table.
436 *
437 ******************************************************************************/
438
439acpi_status
440acpi_tb_get_table_ptr(acpi_table_type table_type,
441 u32 instance, struct acpi_table_header **return_table)
442{
443 struct acpi_table_desc *table_desc;
444 u32 i;
445
446 ACPI_FUNCTION_TRACE(tb_get_table_ptr);
447
448 if (table_type > ACPI_TABLE_ID_MAX) {
449 return_ACPI_STATUS(AE_BAD_PARAMETER);
450 }
451
452 /* Check for instance out of range of the current table count */
453
454 if (instance > acpi_gbl_table_lists[table_type].count) {
455 return_ACPI_STATUS(AE_NOT_EXIST);
456 }
457
458 /*
459 * Walk the list to get the desired table
460 * Note: Instance is one-based
461 */
462 table_desc = acpi_gbl_table_lists[table_type].next;
463 for (i = 1; i < instance; i++) {
464 table_desc = table_desc->next;
465 }
466
467 /* We are now pointing to the requested table's descriptor */
468
469 *return_table = table_desc->pointer;
470 return_ACPI_STATUS(AE_OK);
471}
diff --git a/drivers/acpi/tables/tbgetall.c b/drivers/acpi/tables/tbgetall.c
deleted file mode 100644
index ad982112e4c6..000000000000
--- a/drivers/acpi/tables/tbgetall.c
+++ /dev/null
@@ -1,311 +0,0 @@
1/******************************************************************************
2 *
3 * Module Name: tbgetall - Get all required ACPI tables
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("tbgetall")
49
50/* Local prototypes */
51static acpi_status
52acpi_tb_get_primary_table(struct acpi_pointer *address,
53 struct acpi_table_desc *table_info);
54
55static acpi_status
56acpi_tb_get_secondary_table(struct acpi_pointer *address,
57 acpi_string signature,
58 struct acpi_table_desc *table_info);
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
73static acpi_status
74acpi_tb_get_primary_table(struct acpi_pointer *address,
75 struct acpi_table_desc *table_info)
76{
77 acpi_status status;
78 struct acpi_table_header header;
79
80 ACPI_FUNCTION_TRACE(tb_get_primary_table);
81
82 /* Ignore a NULL address in the RSDT */
83
84 if (!address->pointer.value) {
85 return_ACPI_STATUS(AE_OK);
86 }
87
88 /* Get the header in order to get signature and table size */
89
90 status = acpi_tb_get_table_header(address, &header);
91 if (ACPI_FAILURE(status)) {
92 return_ACPI_STATUS(status);
93 }
94
95 /* Clear the table_info */
96
97 ACPI_MEMSET(table_info, 0, sizeof(struct acpi_table_desc));
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;
104 status = acpi_tb_recognize_table(table_info, ACPI_TABLE_PRIMARY);
105 if (ACPI_FAILURE(status)) {
106 return_ACPI_STATUS(status);
107 }
108
109 /* Get the entire table */
110
111 status = acpi_tb_get_table_body(address, &header, table_info);
112 if (ACPI_FAILURE(status)) {
113 return_ACPI_STATUS(status);
114 }
115
116 /* Install the table */
117
118 status = acpi_tb_install_table(table_info);
119 return_ACPI_STATUS(status);
120}
121
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
135static acpi_status
136acpi_tb_get_secondary_table(struct acpi_pointer *address,
137 acpi_string signature,
138 struct acpi_table_desc *table_info)
139{
140 acpi_status status;
141 struct acpi_table_header header;
142
143 ACPI_FUNCTION_TRACE_STR(tb_get_secondary_table, signature);
144
145 /* Get the header in order to match the signature */
146
147 status = acpi_tb_get_table_header(address, &header);
148 if (ACPI_FAILURE(status)) {
149 return_ACPI_STATUS(status);
150 }
151
152 /* Signature must match request */
153
154 if (!ACPI_COMPARE_NAME(header.signature, signature)) {
155 ACPI_ERROR((AE_INFO,
156 "Incorrect table signature - wanted [%s] found [%4.4s]",
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 * 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
203acpi_status acpi_tb_get_required_tables(void)
204{
205 acpi_status status = AE_OK;
206 u32 i;
207 struct acpi_table_desc table_info;
208 struct acpi_pointer address;
209
210 ACPI_FUNCTION_TRACE(tb_get_required_tables);
211
212 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%d ACPI tables in RSDT\n",
213 acpi_gbl_rsdt_table_count));
214
215 address.pointer_type = acpi_gbl_table_flags | ACPI_LOGICAL_ADDRESSING;
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++) {
226
227 /* Get the table address from the common internal XSDT */
228
229 address.pointer.value = acpi_gbl_XSDT->table_offset_entry[i];
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 */
235 status = acpi_tb_get_primary_table(&address, &table_info);
236 if ((status != AE_OK) && (status != AE_TABLE_NOT_SUPPORTED)) {
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)));
242 }
243 }
244
245 /* We must have a FADT to continue */
246
247 if (!acpi_gbl_FADT) {
248 ACPI_ERROR((AE_INFO, "No FADT present in RSDT/XSDT"));
249 return_ACPI_STATUS(AE_NO_ACPI_TABLES);
250 }
251
252 /*
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.
255 */
256 status = acpi_tb_convert_table_fadt();
257 if (ACPI_FAILURE(status)) {
258 ACPI_ERROR((AE_INFO,
259 "Could not convert FADT to internal common format"));
260 return_ACPI_STATUS(status);
261 }
262
263 /* Get the FACS (Pointed to by the FADT) */
264
265 address.pointer.value = acpi_gbl_FADT->xfirmware_ctrl;
266
267 status = acpi_tb_get_secondary_table(&address, FACS_SIG, &table_info);
268 if (ACPI_FAILURE(status)) {
269 ACPI_EXCEPTION((AE_INFO, status,
270 "Could not get/install the FACS"));
271 return_ACPI_STATUS(status);
272 }
273
274 /*
275 * Create the common FACS pointer table
276 * (Contains pointers to the original table)
277 */
278 status = acpi_tb_build_common_facs(&table_info);
279 if (ACPI_FAILURE(status)) {
280 return_ACPI_STATUS(status);
281 }
282
283 /* Get/install the DSDT (Pointed to by the FADT) */
284
285 address.pointer.value = acpi_gbl_FADT->Xdsdt;
286
287 status = acpi_tb_get_secondary_table(&address, DSDT_SIG, &table_info);
288 if (ACPI_FAILURE(status)) {
289 ACPI_ERROR((AE_INFO, "Could not get/install the DSDT"));
290 return_ACPI_STATUS(status);
291 }
292
293 /* Set Integer Width (32/64) based upon DSDT revision */
294
295 acpi_ut_set_integer_width(acpi_gbl_DSDT->revision);
296
297 /* Dump the entire DSDT */
298
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));
303
304 ACPI_DUMP_BUFFER(ACPI_CAST_PTR(u8, acpi_gbl_DSDT),
305 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_ID_RSDP);
310 return_ACPI_STATUS(status);
311}
diff --git a/drivers/acpi/tables/tbinstal.c b/drivers/acpi/tables/tbinstal.c
index 1668a232fb67..9076ca0913b7 100644
--- a/drivers/acpi/tables/tbinstal.c
+++ b/drivers/acpi/tables/tbinstal.c
@@ -42,510 +42,494 @@
42 */ 42 */
43 43
44#include <acpi/acpi.h> 44#include <acpi/acpi.h>
45#include <acpi/acnamesp.h>
45#include <acpi/actables.h> 46#include <acpi/actables.h>
46 47
47#define _COMPONENT ACPI_TABLES 48#define _COMPONENT ACPI_TABLES
48ACPI_MODULE_NAME("tbinstal") 49ACPI_MODULE_NAME("tbinstal")
49 50
50/* Local prototypes */ 51/******************************************************************************
51static acpi_status
52acpi_tb_match_signature(char *signature,
53 struct acpi_table_desc *table_info, u8 search_type);
54
55/*******************************************************************************
56 * 52 *
57 * FUNCTION: acpi_tb_match_signature 53 * FUNCTION: acpi_tb_verify_table
58 * 54 *
59 * PARAMETERS: Signature - Table signature to match 55 * PARAMETERS: table_desc - table
60 * table_info - Return data
61 * search_type - Table type to match (primary/secondary)
62 * 56 *
63 * RETURN: Status 57 * RETURN: Status
64 * 58 *
65 * DESCRIPTION: Compare signature against the list of "ACPI-subsystem-owned" 59 * DESCRIPTION: this function is called to verify and map table
66 * tables (DSDT/FADT/SSDT, etc.) Returns the table_type_iD on match.
67 * 60 *
68 ******************************************************************************/ 61 *****************************************************************************/
69 62acpi_status acpi_tb_verify_table(struct acpi_table_desc *table_desc)
70static acpi_status
71acpi_tb_match_signature(char *signature,
72 struct acpi_table_desc *table_info, u8 search_type)
73{ 63{
74 acpi_native_uint i; 64 u8 checksum;
75 65
76 ACPI_FUNCTION_TRACE(tb_match_signature); 66 ACPI_FUNCTION_TRACE(tb_verify_table);
77 67
78 /* Search for a signature match among the known table types */ 68 /* Map the table if necessary */
79 69
80 for (i = 0; i < (ACPI_TABLE_ID_MAX + 1); i++) { 70 if (!table_desc->pointer) {
81 if (!(acpi_gbl_table_data[i].flags & search_type)) { 71 table_desc->pointer =
82 continue; 72 acpi_tb_map(table_desc->address, table_desc->length,
73 table_desc->flags & ACPI_TABLE_ORIGIN_MASK);
74 if (!table_desc->pointer) {
75 return_ACPI_STATUS(AE_NO_MEMORY);
83 } 76 }
77 }
84 78
85 if (!ACPI_STRNCMP(signature, acpi_gbl_table_data[i].signature, 79 /* FACS is the odd table, has no standard ACPI header and no checksum */
86 acpi_gbl_table_data[i].sig_length)) {
87 80
88 /* Found a signature match, return index if requested */ 81 if (ACPI_COMPARE_NAME(&(table_desc->signature), ACPI_SIG_FACS)) {
82 return_ACPI_STATUS(AE_OK);
83 }
89 84
90 if (table_info) { 85 /* Always calculate checksum, ignore bad checksum if requested */
91 table_info->type = (u8) i;
92 }
93 86
94 ACPI_DEBUG_PRINT((ACPI_DB_INFO, 87 checksum = acpi_tb_checksum(ACPI_CAST_PTR(void, table_desc->pointer),
95 "Table [%4.4s] is an ACPI table consumed by the core subsystem\n", 88 table_desc->length);
96 (char *)acpi_gbl_table_data[i].
97 signature));
98 89
99 return_ACPI_STATUS(AE_OK); 90#if (ACPI_CHECKSUM_ABORT)
100 }
101 }
102 91
103 ACPI_DEBUG_PRINT((ACPI_DB_INFO, 92 if (checksum) {
104 "Table [%4.4s] is not an ACPI table consumed by the core subsystem - ignored\n", 93 return_ACPI_STATUS(AE_BAD_CHECKSUM);
105 (char *)signature)); 94 }
95#endif
106 96
107 return_ACPI_STATUS(AE_TABLE_NOT_SUPPORTED); 97 return_ACPI_STATUS(AE_OK);
108} 98}
109 99
110/******************************************************************************* 100/*******************************************************************************
111 * 101 *
112 * FUNCTION: acpi_tb_install_table 102 * FUNCTION: acpi_tb_add_table
113 * 103 *
114 * PARAMETERS: table_info - Return value from acpi_tb_get_table_body 104 * PARAMETERS: Table - Pointer to the table header
105 * table_index - Where the table index is returned
115 * 106 *
116 * RETURN: Status 107 * RETURN: Status
117 * 108 *
118 * DESCRIPTION: Install the table into the global data structures. 109 * DESCRIPTION: This function is called to add the ACPI table
119 * 110 *
120 ******************************************************************************/ 111 ******************************************************************************/
121 112
122acpi_status acpi_tb_install_table(struct acpi_table_desc *table_info) 113acpi_status
114acpi_tb_add_table(struct acpi_table_header *table,
115 acpi_native_uint * table_index)
123{ 116{
124 acpi_status status; 117 acpi_native_uint i;
118 acpi_native_uint length;
119 acpi_status status = AE_OK;
125 120
126 ACPI_FUNCTION_TRACE(tb_install_table); 121 ACPI_FUNCTION_TRACE(tb_add_table);
127 122
128 /* Lock tables while installing */ 123 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
129 124
130 status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); 125 /* Check if table is already registered */
131 if (ACPI_FAILURE(status)) { 126
132 ACPI_EXCEPTION((AE_INFO, status, 127 for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
133 "Could not acquire table mutex")); 128 if (!acpi_gbl_root_table_list.tables[i].pointer) {
134 return_ACPI_STATUS(status); 129 status =
130 acpi_tb_verify_table(&acpi_gbl_root_table_list.
131 tables[i]);
132 if (ACPI_FAILURE(status)
133 || !acpi_gbl_root_table_list.tables[i].pointer) {
134 continue;
135 }
136 }
137
138 length = ACPI_MIN(table->length,
139 acpi_gbl_root_table_list.tables[i].pointer->
140 length);
141 if (ACPI_MEMCMP
142 (table, acpi_gbl_root_table_list.tables[i].pointer,
143 length)) {
144 continue;
145 }
146
147 /* Table is already registered */
148
149 ACPI_FREE(table);
150 *table_index = i;
151 goto release;
135 } 152 }
136 153
137 /* 154 /*
138 * Ignore a table that is already installed. For example, some BIOS 155 * Add the table to the global table list
139 * ASL code will repeatedly attempt to load the same SSDT.
140 */ 156 */
141 status = acpi_tb_is_table_installed(table_info); 157 status = acpi_tb_store_table(ACPI_TO_INTEGER(table),
158 table, table->length,
159 ACPI_TABLE_ORIGIN_ALLOCATED, table_index);
142 if (ACPI_FAILURE(status)) { 160 if (ACPI_FAILURE(status)) {
143 goto unlock_and_exit; 161 goto release;
144 } 162 }
145 163
146 /* Install the table into the global data structure */ 164 acpi_tb_print_table_header(0, table);
147 165
148 status = acpi_tb_init_table_descriptor(table_info->type, table_info); 166 release:
149 if (ACPI_FAILURE(status)) {
150 ACPI_EXCEPTION((AE_INFO, status,
151 "Could not install table [%4.4s]",
152 table_info->pointer->signature));
153 }
154
155 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s located at %p\n",
156 acpi_gbl_table_data[table_info->type].name,
157 table_info->pointer));
158
159 unlock_and_exit:
160 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); 167 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
161 return_ACPI_STATUS(status); 168 return_ACPI_STATUS(status);
162} 169}
163 170
164/******************************************************************************* 171/*******************************************************************************
165 * 172 *
166 * FUNCTION: acpi_tb_recognize_table 173 * FUNCTION: acpi_tb_resize_root_table_list
167 * 174 *
168 * PARAMETERS: table_info - Return value from acpi_tb_get_table_body 175 * PARAMETERS: None
169 * search_type - Table type to match (primary/secondary)
170 * 176 *
171 * RETURN: Status 177 * RETURN: Status
172 * 178 *
173 * DESCRIPTION: Check a table signature for a match against known table types 179 * DESCRIPTION: Expand the size of global table array
174 *
175 * NOTE: All table pointers are validated as follows:
176 * 1) Table pointer must point to valid physical memory
177 * 2) Signature must be 4 ASCII chars, even if we don't recognize the
178 * name
179 * 3) Table must be readable for length specified in the header
180 * 4) Table checksum must be valid (with the exception of the FACS
181 * which has no checksum for some odd reason)
182 * 180 *
183 ******************************************************************************/ 181 ******************************************************************************/
184 182
185acpi_status 183acpi_status acpi_tb_resize_root_table_list(void)
186acpi_tb_recognize_table(struct acpi_table_desc *table_info, u8 search_type)
187{ 184{
188 struct acpi_table_header *table_header; 185 struct acpi_table_desc *tables;
189 acpi_status status;
190 186
191 ACPI_FUNCTION_TRACE(tb_recognize_table); 187 ACPI_FUNCTION_TRACE(tb_resize_root_table_list);
192 188
193 /* Ensure that we have a valid table pointer */ 189 /* allow_resize flag is a parameter to acpi_initialize_tables */
194 190
195 table_header = (struct acpi_table_header *)table_info->pointer; 191 if (!(acpi_gbl_root_table_list.flags & ACPI_TABLE_FLAGS_ALLOW_RESIZE)) {
196 if (!table_header) { 192 ACPI_ERROR((AE_INFO,
197 return_ACPI_STATUS(AE_BAD_PARAMETER); 193 "Resize of Root Table Array is not allowed"));
194 return_ACPI_STATUS(AE_SUPPORT);
198 } 195 }
199 196
200 /* 197 /* Increase the Table Array size */
201 * We only "recognize" a limited number of ACPI tables -- namely, the 198
202 * ones that are used by the subsystem (DSDT, FADT, etc.) 199 tables = ACPI_ALLOCATE_ZEROED((acpi_gbl_root_table_list.size +
203 * 200 ACPI_ROOT_TABLE_SIZE_INCREMENT)
204 * An AE_TABLE_NOT_SUPPORTED means that the table was not recognized. 201 * sizeof(struct acpi_table_desc));
205 * This can be any one of many valid ACPI tables, it just isn't one of 202 if (!tables) {
206 * the tables that is consumed by the core subsystem 203 ACPI_ERROR((AE_INFO,
207 */ 204 "Could not allocate new root table array"));
208 status = acpi_tb_match_signature(table_header->signature, 205 return_ACPI_STATUS(AE_NO_MEMORY);
209 table_info, search_type);
210 if (ACPI_FAILURE(status)) {
211 return_ACPI_STATUS(status);
212 } 206 }
213 207
214 status = acpi_tb_validate_table_header(table_header); 208 /* Copy and free the previous table array */
215 if (ACPI_FAILURE(status)) { 209
216 return_ACPI_STATUS(status); 210 if (acpi_gbl_root_table_list.tables) {
211 ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables,
212 acpi_gbl_root_table_list.size *
213 sizeof(struct acpi_table_desc));
214
215 if (acpi_gbl_root_table_list.flags & ACPI_TABLE_ORIGIN_MASK ==
216 ACPI_TABLE_ORIGIN_ALLOCATED) {
217 ACPI_FREE(acpi_gbl_root_table_list.tables);
218 }
217 } 219 }
218 220
219 /* Return the table type and length via the info struct */ 221 acpi_gbl_root_table_list.tables = tables;
222 acpi_gbl_root_table_list.size += ACPI_ROOT_TABLE_SIZE_INCREMENT;
223 acpi_gbl_root_table_list.flags = (u8) (ACPI_TABLE_ORIGIN_ALLOCATED |
224 (acpi_gbl_root_table_list.
225 flags &
226 ~ACPI_TABLE_ORIGIN_MASK));
220 227
221 table_info->length = (acpi_size) table_header->length; 228 return_ACPI_STATUS(AE_OK);
222 return_ACPI_STATUS(status);
223} 229}
224 230
225/******************************************************************************* 231/*******************************************************************************
226 * 232 *
227 * FUNCTION: acpi_tb_init_table_descriptor 233 * FUNCTION: acpi_tb_store_table
228 * 234 *
229 * PARAMETERS: table_type - The type of the table 235 * PARAMETERS: Address - Table address
230 * table_info - A table info struct 236 * Table - Table header
237 * Length - Table length
238 * Flags - flags
231 * 239 *
232 * RETURN: None. 240 * RETURN: Status and table index.
233 * 241 *
234 * DESCRIPTION: Install a table into the global data structs. 242 * DESCRIPTION: Add an ACPI table to the global table list
235 * 243 *
236 ******************************************************************************/ 244 ******************************************************************************/
237 245
238acpi_status 246acpi_status
239acpi_tb_init_table_descriptor(acpi_table_type table_type, 247acpi_tb_store_table(acpi_physical_address address,
240 struct acpi_table_desc *table_info) 248 struct acpi_table_header *table,
249 u32 length, u8 flags, acpi_native_uint * table_index)
241{ 250{
242 struct acpi_table_list *list_head; 251 acpi_status status = AE_OK;
243 struct acpi_table_desc *table_desc;
244 acpi_status status;
245
246 ACPI_FUNCTION_TRACE_U32(tb_init_table_descriptor, table_type);
247
248 /* Allocate a descriptor for this table */
249 252
250 table_desc = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_table_desc)); 253 /* Ensure that there is room for the table in the Root Table List */
251 if (!table_desc) {
252 return_ACPI_STATUS(AE_NO_MEMORY);
253 }
254
255 /* Get a new owner ID for the table */
256 254
257 status = acpi_ut_allocate_owner_id(&table_desc->owner_id); 255 if (acpi_gbl_root_table_list.count >= acpi_gbl_root_table_list.size) {
258 if (ACPI_FAILURE(status)) { 256 status = acpi_tb_resize_root_table_list();
259 goto error_exit1; 257 if (ACPI_FAILURE(status)) {
258 return (status);
259 }
260 } 260 }
261 261
262 /* Install the table into the global data structure */ 262 /* Initialize added table */
263 263
264 list_head = &acpi_gbl_table_lists[table_type]; 264 acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
265 address = address;
266 acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
267 pointer = table;
268 acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].length =
269 length;
270 acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
271 owner_id = 0;
272 acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].flags =
273 flags;
274
275 ACPI_MOVE_32_TO_32(&
276 (acpi_gbl_root_table_list.
277 tables[acpi_gbl_root_table_list.count].signature),
278 table->signature);
279
280 *table_index = acpi_gbl_root_table_list.count;
281 acpi_gbl_root_table_list.count++;
282 return (status);
283}
265 284
266 /* 285/*******************************************************************************
267 * Two major types of tables: 1) Only one instance is allowed. This 286 *
268 * includes most ACPI tables such as the DSDT. 2) Multiple instances of 287 * FUNCTION: acpi_tb_delete_table
269 * the table are allowed. This includes SSDT and PSDTs. 288 *
270 */ 289 * PARAMETERS: table_index - Table index
271 if (ACPI_IS_SINGLE_TABLE(acpi_gbl_table_data[table_type].flags)) { 290 *
272 /* 291 * RETURN: None
273 * Only one table allowed, and a table has alread been installed 292 *
274 * at this location, so return an error. 293 * DESCRIPTION: Delete one internal ACPI table
275 */ 294 *
276 if (list_head->next) { 295 ******************************************************************************/
277 status = AE_ALREADY_EXISTS;
278 goto error_exit2;
279 }
280 296
281 table_desc->next = list_head->next; 297void acpi_tb_delete_table(acpi_native_uint table_index)
282 list_head->next = table_desc; 298{
299 struct acpi_table_desc *table_desc;
283 300
284 if (table_desc->next) { 301 /* table_index assumed valid */
285 table_desc->next->prev = table_desc;
286 }
287 302
288 list_head->count++; 303 table_desc = &acpi_gbl_root_table_list.tables[table_index];
289 } else {
290 /*
291 * Link the new table in to the list of tables of this type.
292 * Insert at the end of the list, order IS IMPORTANT.
293 *
294 * table_desc->Prev & Next are already NULL from calloc()
295 */
296 list_head->count++;
297
298 if (!list_head->next) {
299 list_head->next = table_desc;
300 } else {
301 table_desc->next = list_head->next;
302 304
303 while (table_desc->next->next) { 305 /* Table must be mapped or allocated */
304 table_desc->next = table_desc->next->next;
305 }
306 306
307 table_desc->next->next = table_desc; 307 if (!table_desc->pointer) {
308 table_desc->prev = table_desc->next; 308 return;
309 table_desc->next = NULL;
310 }
311 } 309 }
312 310
313 /* Finish initialization of the table descriptor */ 311 if (table_desc->flags & ACPI_TABLE_ORIGIN_MAPPED) {
314 312 acpi_tb_unmap(table_desc->pointer, table_desc->length,
315 table_desc->loaded_into_namespace = FALSE; 313 table_desc->flags & ACPI_TABLE_ORIGIN_MASK);
316 table_desc->type = (u8) table_type; 314 } else if (table_desc->flags & ACPI_TABLE_ORIGIN_ALLOCATED) {
317 table_desc->pointer = table_info->pointer; 315 ACPI_FREE(table_desc->pointer);
318 table_desc->length = table_info->length;
319 table_desc->allocation = table_info->allocation;
320 table_desc->aml_start = (u8 *) (table_desc->pointer + 1),
321 table_desc->aml_length = (u32)
322 (table_desc->length - (u32) sizeof(struct acpi_table_header));
323
324 /*
325 * Set the appropriate global pointer (if there is one) to point to the
326 * newly installed table
327 */
328 if (acpi_gbl_table_data[table_type].global_ptr) {
329 *(acpi_gbl_table_data[table_type].global_ptr) =
330 table_info->pointer;
331 } 316 }
332 317
333 /* Return Data */ 318 table_desc->pointer = NULL;
334
335 table_info->owner_id = table_desc->owner_id;
336 table_info->installed_desc = table_desc;
337 return_ACPI_STATUS(AE_OK);
338
339 /* Error exit with cleanup */
340
341 error_exit2:
342
343 acpi_ut_release_owner_id(&table_desc->owner_id);
344
345 error_exit1:
346
347 ACPI_FREE(table_desc);
348 return_ACPI_STATUS(status);
349} 319}
350 320
351/******************************************************************************* 321/*******************************************************************************
352 * 322 *
353 * FUNCTION: acpi_tb_delete_all_tables 323 * FUNCTION: acpi_tb_terminate
354 * 324 *
355 * PARAMETERS: None. 325 * PARAMETERS: None
356 * 326 *
357 * RETURN: None. 327 * RETURN: None
358 * 328 *
359 * DESCRIPTION: Delete all internal ACPI tables 329 * DESCRIPTION: Delete all internal ACPI tables
360 * 330 *
361 ******************************************************************************/ 331 ******************************************************************************/
362 332
363void acpi_tb_delete_all_tables(void) 333void acpi_tb_terminate(void)
364{ 334{
365 acpi_table_type type; 335 acpi_native_uint i;
336
337 ACPI_FUNCTION_TRACE(tb_terminate);
338
339 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
340
341 /* Delete the individual tables */
342
343 for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
344 acpi_tb_delete_table(i);
345 }
366 346
367 /* 347 /*
368 * Free memory allocated for ACPI tables 348 * Delete the root table array if allocated locally. Array cannot be
369 * Memory can either be mapped or allocated 349 * mapped, so we don't need to check for that flag.
370 */ 350 */
371 for (type = 0; type < (ACPI_TABLE_ID_MAX + 1); type++) { 351 if ((acpi_gbl_root_table_list.flags & ACPI_TABLE_ORIGIN_MASK) ==
372 acpi_tb_delete_tables_by_type(type); 352 ACPI_TABLE_ORIGIN_ALLOCATED) {
353 ACPI_FREE(acpi_gbl_root_table_list.tables);
373 } 354 }
355
356 acpi_gbl_root_table_list.tables = NULL;
357 acpi_gbl_root_table_list.flags = 0;
358 acpi_gbl_root_table_list.count = 0;
359
360 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n"));
361 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
374} 362}
375 363
376/******************************************************************************* 364/*******************************************************************************
377 * 365 *
378 * FUNCTION: acpi_tb_delete_tables_by_type 366 * FUNCTION: acpi_tb_delete_namespace_by_owner
379 * 367 *
380 * PARAMETERS: Type - The table type to be deleted 368 * PARAMETERS: table_index - Table index
381 * 369 *
382 * RETURN: None. 370 * RETURN: None
383 * 371 *
384 * DESCRIPTION: Delete an internal ACPI table 372 * DESCRIPTION: Delete all namespace objects created when this table was loaded.
385 * Locks the ACPI table mutex
386 * 373 *
387 ******************************************************************************/ 374 ******************************************************************************/
388 375
389void acpi_tb_delete_tables_by_type(acpi_table_type type) 376void acpi_tb_delete_namespace_by_owner(acpi_native_uint table_index)
390{ 377{
391 struct acpi_table_desc *table_desc; 378 acpi_owner_id owner_id;
392 u32 count;
393 u32 i;
394
395 ACPI_FUNCTION_TRACE_U32(tb_delete_tables_by_type, type);
396
397 if (type > ACPI_TABLE_ID_MAX) {
398 return_VOID;
399 }
400 379
401 if (ACPI_FAILURE(acpi_ut_acquire_mutex(ACPI_MTX_TABLES))) { 380 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
381 if (table_index < acpi_gbl_root_table_list.count) {
382 owner_id =
383 acpi_gbl_root_table_list.tables[table_index].owner_id;
384 } else {
385 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
402 return; 386 return;
403 } 387 }
404 388
405 /* Clear the appropriate "typed" global table pointer */ 389 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
406 390 acpi_ns_delete_namespace_by_owner(owner_id);
407 switch (type) { 391}
408 case ACPI_TABLE_ID_RSDP:
409 acpi_gbl_RSDP = NULL;
410 break;
411
412 case ACPI_TABLE_ID_DSDT:
413 acpi_gbl_DSDT = NULL;
414 break;
415
416 case ACPI_TABLE_ID_FADT:
417 acpi_gbl_FADT = NULL;
418 break;
419
420 case ACPI_TABLE_ID_FACS:
421 acpi_gbl_FACS = NULL;
422 break;
423 392
424 case ACPI_TABLE_ID_XSDT: 393/*******************************************************************************
425 acpi_gbl_XSDT = NULL; 394 *
426 break; 395 * FUNCTION: acpi_tb_allocate_owner_id
396 *
397 * PARAMETERS: table_index - Table index
398 *
399 * RETURN: Status
400 *
401 * DESCRIPTION: Allocates owner_id in table_desc
402 *
403 ******************************************************************************/
427 404
428 case ACPI_TABLE_ID_SSDT: 405acpi_status acpi_tb_allocate_owner_id(acpi_native_uint table_index)
429 case ACPI_TABLE_ID_PSDT: 406{
430 default: 407 acpi_status status = AE_BAD_PARAMETER;
431 break;
432 }
433 408
434 /* 409 ACPI_FUNCTION_TRACE(tb_allocate_owner_id);
435 * Free the table
436 * 1) Get the head of the list
437 */
438 table_desc = acpi_gbl_table_lists[type].next;
439 count = acpi_gbl_table_lists[type].count;
440 410
441 /* 411 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
442 * 2) Walk the entire list, deleting both the allocated tables 412 if (table_index < acpi_gbl_root_table_list.count) {
443 * and the table descriptors 413 status = acpi_ut_allocate_owner_id
444 */ 414 (&(acpi_gbl_root_table_list.tables[table_index].owner_id));
445 for (i = 0; i < count; i++) {
446 table_desc = acpi_tb_uninstall_table(table_desc);
447 } 415 }
448 416
449 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); 417 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
450 return_VOID; 418 return_ACPI_STATUS(status);
451} 419}
452 420
453/******************************************************************************* 421/*******************************************************************************
454 * 422 *
455 * FUNCTION: acpi_tb_delete_single_table 423 * FUNCTION: acpi_tb_release_owner_id
456 * 424 *
457 * PARAMETERS: table_info - A table info struct 425 * PARAMETERS: table_index - Table index
458 * 426 *
459 * RETURN: None. 427 * RETURN: Status
460 * 428 *
461 * DESCRIPTION: Low-level free for a single ACPI table. Handles cases where 429 * DESCRIPTION: Releases owner_id in table_desc
462 * the table was allocated a buffer or was mapped.
463 * 430 *
464 ******************************************************************************/ 431 ******************************************************************************/
465 432
466void acpi_tb_delete_single_table(struct acpi_table_desc *table_desc) 433acpi_status acpi_tb_release_owner_id(acpi_native_uint table_index)
467{ 434{
435 acpi_status status = AE_BAD_PARAMETER;
468 436
469 /* Must have a valid table descriptor and pointer */ 437 ACPI_FUNCTION_TRACE(tb_release_owner_id);
470 438
471 if ((!table_desc) || (!table_desc->pointer)) { 439 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
472 return; 440 if (table_index < acpi_gbl_root_table_list.count) {
441 acpi_ut_release_owner_id(&
442 (acpi_gbl_root_table_list.
443 tables[table_index].owner_id));
444 status = AE_OK;
473 } 445 }
474 446
475 /* Valid table, determine type of memory allocation */ 447 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
476 448 return_ACPI_STATUS(status);
477 switch (table_desc->allocation) {
478 case ACPI_MEM_NOT_ALLOCATED:
479 break;
480
481 case ACPI_MEM_ALLOCATED:
482
483 ACPI_FREE(table_desc->pointer);
484 break;
485
486 case ACPI_MEM_MAPPED:
487
488 acpi_os_unmap_memory(table_desc->pointer, table_desc->length);
489 break;
490
491 default:
492 break;
493 }
494} 449}
495 450
496/******************************************************************************* 451/*******************************************************************************
497 * 452 *
498 * FUNCTION: acpi_tb_uninstall_table 453 * FUNCTION: acpi_tb_get_owner_id
499 * 454 *
500 * PARAMETERS: table_info - A table info struct 455 * PARAMETERS: table_index - Table index
456 * owner_id - Where the table owner_id is returned
501 * 457 *
502 * RETURN: Pointer to the next table in the list (of same type) 458 * RETURN: Status
503 * 459 *
504 * DESCRIPTION: Free the memory associated with an internal ACPI table that 460 * DESCRIPTION: returns owner_id for the ACPI table
505 * is either installed or has never been installed.
506 * Table mutex should be locked.
507 * 461 *
508 ******************************************************************************/ 462 ******************************************************************************/
509 463
510struct acpi_table_desc *acpi_tb_uninstall_table(struct acpi_table_desc 464acpi_status
511 *table_desc) 465acpi_tb_get_owner_id(acpi_native_uint table_index, acpi_owner_id * owner_id)
512{ 466{
513 struct acpi_table_desc *next_desc; 467 acpi_status status = AE_BAD_PARAMETER;
514 468
515 ACPI_FUNCTION_TRACE_PTR(tb_uninstall_table, table_desc); 469 ACPI_FUNCTION_TRACE(tb_get_owner_id);
516 470
517 if (!table_desc) { 471 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
518 return_PTR(NULL); 472 if (table_index < acpi_gbl_root_table_list.count) {
473 *owner_id =
474 acpi_gbl_root_table_list.tables[table_index].owner_id;
475 status = AE_OK;
519 } 476 }
520 477
521 /* Unlink the descriptor from the doubly linked list */ 478 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
479 return_ACPI_STATUS(status);
480}
522 481
523 if (table_desc->prev) { 482/*******************************************************************************
524 table_desc->prev->next = table_desc->next; 483 *
525 } else { 484 * FUNCTION: acpi_tb_is_table_loaded
526 /* Is first on list, update list head */ 485 *
486 * PARAMETERS: table_index - Table index
487 *
488 * RETURN: Table Loaded Flag
489 *
490 ******************************************************************************/
527 491
528 acpi_gbl_table_lists[table_desc->type].next = table_desc->next; 492u8 acpi_tb_is_table_loaded(acpi_native_uint table_index)
529 } 493{
494 u8 is_loaded = FALSE;
530 495
531 if (table_desc->next) { 496 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
532 table_desc->next->prev = table_desc->prev; 497 if (table_index < acpi_gbl_root_table_list.count) {
498 is_loaded = (u8)
499 (acpi_gbl_root_table_list.tables[table_index].
500 flags & ACPI_TABLE_FLAGS_LOADED);
533 } 501 }
534 502
535 /* Free the memory allocated for the table itself */ 503 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
536 504 return (is_loaded);
537 acpi_tb_delete_single_table(table_desc); 505}
538
539 /* Free the owner ID associated with this table */
540
541 acpi_ut_release_owner_id(&table_desc->owner_id);
542 506
543 /* Free the table descriptor */ 507/*******************************************************************************
508 *
509 * FUNCTION: acpi_tb_set_table_loaded_flag
510 *
511 * PARAMETERS: table_index - Table index
512 * is_loaded - TRUE if table is loaded, FALSE otherwise
513 *
514 * RETURN: None
515 *
516 * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
517 *
518 ******************************************************************************/
544 519
545 next_desc = table_desc->next; 520void acpi_tb_set_table_loaded_flag(acpi_native_uint table_index, u8 is_loaded)
546 ACPI_FREE(table_desc); 521{
547 522
548 /* Return pointer to the next descriptor */ 523 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
524 if (table_index < acpi_gbl_root_table_list.count) {
525 if (is_loaded) {
526 acpi_gbl_root_table_list.tables[table_index].flags |=
527 ACPI_TABLE_FLAGS_LOADED;
528 } else {
529 acpi_gbl_root_table_list.tables[table_index].flags &=
530 ~ACPI_TABLE_FLAGS_LOADED;
531 }
532 }
549 533
550 return_PTR(next_desc); 534 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
551} 535}
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}
diff --git a/drivers/acpi/tables/tbutils.c b/drivers/acpi/tables/tbutils.c
index 209a401801e3..3620ac5f8681 100644
--- a/drivers/acpi/tables/tbutils.c
+++ b/drivers/acpi/tables/tbutils.c
@@ -1,6 +1,6 @@
1/****************************************************************************** 1/******************************************************************************
2 * 2 *
3 * Module Name: tbutils - Table manipulation utilities 3 * Module Name: tbutils - table utilities
4 * 4 *
5 *****************************************************************************/ 5 *****************************************************************************/
6 6
@@ -48,295 +48,507 @@
48ACPI_MODULE_NAME("tbutils") 48ACPI_MODULE_NAME("tbutils")
49 49
50/* Local prototypes */ 50/* Local prototypes */
51#ifdef ACPI_OBSOLETE_FUNCTIONS 51static void acpi_tb_parse_fadt(struct acpi_table_fadt *fadt, u8 flags);
52acpi_status 52
53acpi_tb_handle_to_object(u16 table_id, struct acpi_table_desc **table_desc); 53static void inline
54#endif 54acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct,
55 u8 bit_width, acpi_physical_address address);
55 56
56/******************************************************************************* 57/*******************************************************************************
57 * 58 *
58 * FUNCTION: acpi_tb_is_table_installed 59 * FUNCTION: acpi_tb_print_table_header
59 * 60 *
60 * PARAMETERS: new_table_desc - Descriptor for new table being installed 61 * PARAMETERS: Address - Table physical address
62 * Header - Table header
61 * 63 *
62 * RETURN: Status - AE_ALREADY_EXISTS if the table is already installed 64 * RETURN: None
63 * 65 *
64 * DESCRIPTION: Determine if an ACPI table is already installed 66 * DESCRIPTION: Print an ACPI table header
65 *
66 * MUTEX: Table data structures should be locked
67 * 67 *
68 ******************************************************************************/ 68 ******************************************************************************/
69 69
70acpi_status acpi_tb_is_table_installed(struct acpi_table_desc *new_table_desc) 70void
71acpi_tb_print_table_header(acpi_physical_address address,
72 struct acpi_table_header *header)
71{ 73{
72 struct acpi_table_desc *table_desc;
73
74 ACPI_FUNCTION_TRACE(tb_is_table_installed);
75
76 /* Get the list descriptor and first table descriptor */
77
78 table_desc = acpi_gbl_table_lists[new_table_desc->type].next;
79
80 /* Examine all installed tables of this type */
81
82 while (table_desc) {
83 /*
84 * If the table lengths match, perform a full bytewise compare. This
85 * means that we will allow tables with duplicate oem_table_id(s), as
86 * long as the tables are different in some way.
87 *
88 * Checking if the table has been loaded into the namespace means that
89 * we don't check for duplicate tables during the initial installation
90 * of tables within the RSDT/XSDT.
91 */
92 if ((table_desc->loaded_into_namespace) &&
93 (table_desc->pointer->length ==
94 new_table_desc->pointer->length)
95 &&
96 (!ACPI_MEMCMP
97 (table_desc->pointer, new_table_desc->pointer,
98 new_table_desc->pointer->length))) {
99
100 /* Match: this table is already installed */
101
102 ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
103 "Table [%4.4s] already installed: Rev %X OemTableId [%8.8s]\n",
104 new_table_desc->pointer->signature,
105 new_table_desc->pointer->revision,
106 new_table_desc->pointer->
107 oem_table_id));
108
109 new_table_desc->owner_id = table_desc->owner_id;
110 new_table_desc->installed_desc = table_desc;
111
112 return_ACPI_STATUS(AE_ALREADY_EXISTS);
113 }
114
115 /* Get next table on the list */
116 74
117 table_desc = table_desc->next; 75 ACPI_INFO((AE_INFO,
118 } 76 "%4.4s @ 0x%p Length 0x%04X (v%3.3d %6.6s %8.8s 0x%08X %4.4s 0x%08X)",
119 77 header->signature, ACPI_CAST_PTR(void, address),
120 return_ACPI_STATUS(AE_OK); 78 header->length, header->revision, header->oem_id,
79 header->oem_table_id, header->oem_revision,
80 header->asl_compiler_id, header->asl_compiler_revision));
121} 81}
122 82
123/******************************************************************************* 83/*******************************************************************************
124 * 84 *
125 * FUNCTION: acpi_tb_validate_table_header 85 * FUNCTION: acpi_tb_init_generic_address
126 *
127 * PARAMETERS: table_header - Logical pointer to the table
128 * 86 *
129 * RETURN: Status 87 * PARAMETERS: new_gas_struct - GAS struct to be initialized
88 * bit_width - Width of this register
89 * Address - Address of the register
130 * 90 *
131 * DESCRIPTION: Check an ACPI table header for validity 91 * RETURN: None
132 * 92 *
133 * NOTE: Table pointers are validated as follows: 93 * DESCRIPTION: Initialize a GAS structure.
134 * 1) Table pointer must point to valid physical memory
135 * 2) Signature must be 4 ASCII chars, even if we don't recognize the
136 * name
137 * 3) Table must be readable for length specified in the header
138 * 4) Table checksum must be valid (with the exception of the FACS
139 * which has no checksum because it contains variable fields)
140 * 94 *
141 ******************************************************************************/ 95 ******************************************************************************/
142 96
143acpi_status 97static void inline
144acpi_tb_validate_table_header(struct acpi_table_header *table_header) 98acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct,
99 u8 bit_width, acpi_physical_address address)
145{ 100{
146 acpi_name signature;
147
148 ACPI_FUNCTION_ENTRY();
149
150 /* Verify that this is a valid address */
151
152 if (!acpi_os_readable(table_header, sizeof(struct acpi_table_header))) {
153 ACPI_ERROR((AE_INFO,
154 "Cannot read table header at %p", table_header));
155
156 return (AE_BAD_ADDRESS);
157 }
158
159 /* Ensure that the signature is 4 ASCII characters */
160
161 ACPI_MOVE_32_TO_32(&signature, table_header->signature);
162 if (!acpi_ut_valid_acpi_name(signature)) {
163 ACPI_ERROR((AE_INFO, "Invalid table signature 0x%8.8X",
164 signature));
165 101
166 ACPI_DUMP_BUFFER(table_header, 102 ACPI_STORE_ADDRESS(new_gas_struct->address, address);
167 sizeof(struct acpi_table_header)); 103 new_gas_struct->space_id = ACPI_ADR_SPACE_SYSTEM_IO;
168 return (AE_BAD_SIGNATURE); 104 new_gas_struct->bit_width = bit_width;
169 } 105 new_gas_struct->bit_offset = 0;
170 106 new_gas_struct->access_width = 0;
171 /* Validate the table length */
172
173 if (table_header->length < sizeof(struct acpi_table_header)) {
174 ACPI_ERROR((AE_INFO,
175 "Invalid length 0x%X in table with signature %4.4s",
176 (u32) table_header->length,
177 ACPI_CAST_PTR(char, &signature)));
178
179 ACPI_DUMP_BUFFER(table_header,
180 sizeof(struct acpi_table_header));
181 return (AE_BAD_HEADER);
182 }
183
184 return (AE_OK);
185} 107}
186 108
187/******************************************************************************* 109/*******************************************************************************
188 * 110 *
189 * FUNCTION: acpi_tb_sum_table 111 * FUNCTION: acpi_tb_checksum
190 * 112 *
191 * PARAMETERS: Buffer - Buffer to sum 113 * PARAMETERS: Buffer - Pointer to memory region to be checked
192 * Length - Size of the buffer 114 * Length - Length of this memory region
193 * 115 *
194 * RETURN: 8 bit sum of buffer 116 * RETURN: Checksum (u8)
195 * 117 *
196 * DESCRIPTION: Computes an 8 bit sum of the buffer(length) and returns it. 118 * DESCRIPTION: Calculates circular checksum of memory region.
197 * 119 *
198 ******************************************************************************/ 120 ******************************************************************************/
199 121
200u8 acpi_tb_sum_table(void *buffer, u32 length) 122u8 acpi_tb_checksum(u8 * buffer, acpi_native_uint length)
201{ 123{
202 acpi_native_uint i;
203 u8 sum = 0; 124 u8 sum = 0;
125 u8 *end = buffer + length;
204 126
205 if (!buffer || !length) { 127 while (buffer < end) {
206 return (0); 128 sum = (u8) (sum + *(buffer++));
207 } 129 }
208 130
209 for (i = 0; i < length; i++) { 131 return sum;
210 sum = (u8) (sum + ((u8 *) buffer)[i]);
211 }
212 return (sum);
213} 132}
214 133
215/******************************************************************************* 134/*******************************************************************************
216 * 135 *
217 * FUNCTION: acpi_tb_generate_checksum 136 * FUNCTION: acpi_tb_convert_fadt
218 * 137 *
219 * PARAMETERS: Table - Pointer to a valid ACPI table (with a 138 * PARAMETERS: Fadt - FADT table to be converted
220 * standard ACPI header)
221 * 139 *
222 * RETURN: 8 bit checksum of buffer 140 * RETURN: None
223 * 141 *
224 * DESCRIPTION: Computes an 8 bit checksum of the table. 142 * DESCRIPTION: Converts a BIOS supplied ACPI 1.0 FADT to a local
143 * ACPI 2.0 FADT. If the BIOS supplied a 2.0 FADT then it is simply
144 * copied to the local FADT. The ACPI CA software uses this
145 * local FADT. Thus a significant amount of special #ifdef
146 * type codeing is saved.
225 * 147 *
226 ******************************************************************************/ 148 ******************************************************************************/
227 149
228u8 acpi_tb_generate_checksum(struct acpi_table_header * table) 150void acpi_tb_convert_fadt(struct acpi_table_fadt *fadt)
229{ 151{
230 u8 checksum;
231
232 /* Sum the entire table as-is */
233 152
234 checksum = acpi_tb_sum_table(table, table->length); 153 /*
154 * Convert table pointers to 64-bit fields
155 */
156 if (!acpi_gbl_FADT.Xfacs) {
157 acpi_gbl_FADT.Xfacs = (u64) acpi_gbl_FADT.facs;
158 }
235 159
236 /* Subtract off the existing checksum value in the table */ 160 if (!acpi_gbl_FADT.Xdsdt) {
161 acpi_gbl_FADT.Xdsdt = (u64) acpi_gbl_FADT.dsdt;
162 }
237 163
238 checksum = (u8) (checksum - table->checksum); 164 /*
165 * Convert the V1.0 block addresses to V2.0 GAS structures
166 */
167 acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm1a_event_block,
168 acpi_gbl_FADT.pm1_event_length,
169 (acpi_physical_address) acpi_gbl_FADT.
170 pm1a_event_block);
171 acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm1b_event_block,
172 acpi_gbl_FADT.pm1_event_length,
173 (acpi_physical_address) acpi_gbl_FADT.
174 pm1b_event_block);
175 acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm1a_control_block,
176 acpi_gbl_FADT.pm1_control_length,
177 (acpi_physical_address) acpi_gbl_FADT.
178 pm1a_control_block);
179 acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm1b_control_block,
180 acpi_gbl_FADT.pm1_control_length,
181 (acpi_physical_address) acpi_gbl_FADT.
182 pm1b_control_block);
183 acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm2_control_block,
184 acpi_gbl_FADT.pm2_control_length,
185 (acpi_physical_address) acpi_gbl_FADT.
186 pm2_control_block);
187 acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm_timer_block,
188 acpi_gbl_FADT.pm_timer_length,
189 (acpi_physical_address) acpi_gbl_FADT.
190 pm_timer_block);
191 acpi_tb_init_generic_address(&acpi_gbl_FADT.xgpe0_block, 0,
192 (acpi_physical_address) acpi_gbl_FADT.
193 gpe0_block);
194 acpi_tb_init_generic_address(&acpi_gbl_FADT.xgpe1_block, 0,
195 (acpi_physical_address) acpi_gbl_FADT.
196 gpe1_block);
197
198 /*
199 * Create separate GAS structs for the PM1 Enable registers
200 */
201 acpi_tb_init_generic_address(&acpi_gbl_xpm1a_enable,
202 (u8) ACPI_DIV_2(acpi_gbl_FADT.
203 pm1_event_length),
204 (acpi_physical_address)
205 (acpi_gbl_FADT.xpm1a_event_block.address +
206 ACPI_DIV_2(acpi_gbl_FADT.
207 pm1_event_length)));
208
209 /*
210 * PM1B is optional; leave null if not present
211 */
212 if (acpi_gbl_FADT.xpm1b_event_block.address) {
213 acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable,
214 (u8) ACPI_DIV_2(acpi_gbl_FADT.
215 pm1_event_length),
216 (acpi_physical_address)
217 (acpi_gbl_FADT.xpm1b_event_block.
218 address +
219 ACPI_DIV_2(acpi_gbl_FADT.
220 pm1_event_length)));
221 }
239 222
240 /* Compute the final checksum */ 223 /* Global FADT is the new common V2.0 FADT */
241 224
242 checksum = (u8) (0 - checksum); 225 acpi_gbl_FADT.header.length = sizeof(struct acpi_table_fadt);
243 return (checksum);
244} 226}
245 227
246/******************************************************************************* 228/*******************************************************************************
247 * 229 *
248 * FUNCTION: acpi_tb_set_checksum 230 * FUNCTION: acpi_tb_parse_fadt
249 * 231 *
250 * PARAMETERS: Table - Pointer to a valid ACPI table (with a 232 * PARAMETERS: Fadt - Pointer to FADT table
251 * standard ACPI header) 233 * Flags - Flags
252 * 234 *
253 * RETURN: None. Sets the table checksum field 235 * RETURN: none
254 * 236 *
255 * DESCRIPTION: Computes an 8 bit checksum of the table and inserts the 237 * DESCRIPTION: This function is called to initialise the FADT, DSDT and FACS
256 * checksum into the table header. 238 * tables (FADT contains the addresses of the DSDT and FACS)
257 * 239 *
258 ******************************************************************************/ 240 ******************************************************************************/
259 241
260void acpi_tb_set_checksum(struct acpi_table_header *table) 242static void acpi_tb_parse_fadt(struct acpi_table_fadt *fadt, u8 flags)
261{ 243{
244 acpi_physical_address dsdt_address =
245 (acpi_physical_address) fadt->Xdsdt;
246 acpi_physical_address facs_address =
247 (acpi_physical_address) fadt->Xfacs;
248 struct acpi_table_header *table;
249
250 if (!dsdt_address) {
251 goto no_dsdt;
252 }
253
254 table =
255 acpi_os_map_memory(dsdt_address, sizeof(struct acpi_table_header));
256 if (!table) {
257 goto no_dsdt;
258 }
259
260 /* Initialize the DSDT table */
261
262 ACPI_MOVE_32_TO_32(&
263 (acpi_gbl_root_table_list.
264 tables[ACPI_TABLE_INDEX_DSDT].signature),
265 ACPI_SIG_DSDT);
266
267 acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].address =
268 dsdt_address;
269 acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].length =
270 table->length;
271 acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].flags = flags;
272
273 acpi_tb_print_table_header(dsdt_address, table);
274
275 /* Global integer width is based upon revision of the DSDT */
276
277 acpi_ut_set_integer_width(table->revision);
278 acpi_os_unmap_memory(table, sizeof(struct acpi_table_header));
279
280 no_dsdt:
281 if (!facs_address) {
282 return;
283 }
262 284
263 table->checksum = acpi_tb_generate_checksum(table); 285 table =
286 acpi_os_map_memory(facs_address, sizeof(struct acpi_table_header));
287 if (!table) {
288 return;
289 }
290
291 /* Initialize the FACS table */
292
293 ACPI_MOVE_32_TO_32(&
294 (acpi_gbl_root_table_list.
295 tables[ACPI_TABLE_INDEX_FACS].signature),
296 ACPI_SIG_FACS);
297
298 acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_FACS].address =
299 facs_address;
300 acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_FACS].length =
301 table->length;
302 acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_FACS].flags = flags;
303
304 ACPI_INFO((AE_INFO, "%4.4s @ 0x%p",
305 table->signature, ACPI_CAST_PTR(void, facs_address)));
306
307 acpi_os_unmap_memory(table, sizeof(struct acpi_table_header));
264} 308}
265 309
266/******************************************************************************* 310/*******************************************************************************
267 * 311 *
268 * FUNCTION: acpi_tb_verify_table_checksum 312 * FUNCTION: acpi_tb_parse_root_table
269 * 313 *
270 * PARAMETERS: *table_header - ACPI table to verify 314 * PARAMETERS: Rsdp - Pointer to the RSDP
315 * Flags - Flags
316 *
317 * RETURN: Status
271 * 318 *
272 * RETURN: 8 bit checksum of table 319 * DESCRIPTION: This function is called to parse the Root System Description
320 * Table (RSDT or XSDT)
273 * 321 *
274 * DESCRIPTION: Generates an 8 bit checksum of table and returns and compares 322 * NOTE: Tables are mapped (not copied) for efficiency. The FACS must
275 * it to the existing checksum value. 323 * be mapped and cannot be copied because it contains the actual
324 * memory location of the ACPI Global Lock.
276 * 325 *
277 ******************************************************************************/ 326 ******************************************************************************/
278 327
279acpi_status 328acpi_status acpi_tb_parse_root_table(struct acpi_table_rsdp *rsdp, u8 flags)
280acpi_tb_verify_table_checksum(struct acpi_table_header *table_header)
281{ 329{
330 struct acpi_table_header *table;
331 acpi_physical_address address;
332 u32 length;
333 u8 *table_entry;
334 acpi_native_uint i;
335 acpi_native_uint pointer_size;
336 u32 table_count;
282 u8 checksum; 337 u8 checksum;
338 acpi_status status;
339
340 ACPI_FUNCTION_TRACE(tb_parse_root_table);
341
342 /* Differentiate between RSDT and XSDT root tables */
343
344 if (rsdp->revision > 1 && rsdp->xsdt_physical_address) {
345 /*
346 * Root table is an XSDT (64-bit physical addresses). We must use the
347 * XSDT if the revision is > 1 and the XSDT pointer is present, as per
348 * the ACPI specification.
349 */
350 address = (acpi_native_uint) rsdp->xsdt_physical_address;
351 pointer_size = sizeof(u64);
352 } else {
353 /* Root table is an RSDT (32-bit physical addresses) */
354
355 address = (acpi_native_uint) rsdp->rsdt_physical_address;
356 pointer_size = sizeof(u32);
357 }
283 358
284 ACPI_FUNCTION_TRACE(tb_verify_table_checksum); 359 /* Map the table header to get the full table length */
285 360
286 /* Compute the checksum on the table */ 361 table = acpi_os_map_memory(address, sizeof(struct acpi_table_header));
362 if (!table) {
363 return (AE_NO_MEMORY);
364 }
365
366 /* Get the length of the full table, verify length and map entire table */
367
368 length = table->length;
369 acpi_os_unmap_memory(table, sizeof(struct acpi_table_header));
370
371 if (length < sizeof(struct acpi_table_header)) {
372 ACPI_ERROR((AE_INFO, "Invalid length 0x%X in RSDT/XSDT",
373 length));
374 return (AE_INVALID_TABLE_LENGTH);
375 }
376
377 table = acpi_os_map_memory(address, length);
378 if (!table) {
379 return (AE_NO_MEMORY);
380 }
381
382 /* Validate the root table checksum */
383
384 checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length);
385#if (ACPI_CHECKSUM_ABORT)
386
387 if (checksum) {
388 acpi_os_unmap_memory(table, length);
389 return (AE_BAD_CHECKSUM);
390 }
391#endif
392
393 acpi_tb_print_table_header(address, table);
394
395 /* Calculate the number of tables described in the root table */
396
397 table_count =
398 (table->length - sizeof(struct acpi_table_header)) / pointer_size;
399
400 /* Setup loop */
287 401
288 checksum = acpi_tb_generate_checksum(table_header); 402 table_entry =
403 ACPI_CAST_PTR(u8, table) + sizeof(struct acpi_table_header);
404 acpi_gbl_root_table_list.count = 2;
289 405
290 /* Checksum ok? */ 406 /*
407 * Initialize the ACPI table entries
408 * First two entries in the table array are reserved for the DSDT and FACS
409 */
410 for (i = 0; i < table_count; ++i, table_entry += pointer_size) {
291 411
292 if (checksum == table_header->checksum) { 412 /* Ensure there is room for another table entry */
293 return_ACPI_STATUS(AE_OK); 413
414 if (acpi_gbl_root_table_list.count >=
415 acpi_gbl_root_table_list.size) {
416 status = acpi_tb_resize_root_table_list();
417 if (ACPI_FAILURE(status)) {
418 ACPI_WARNING((AE_INFO,
419 "Truncating %u table entries!",
420 (unsigned)
421 (acpi_gbl_root_table_list.size -
422 acpi_gbl_root_table_list.
423 count)));
424 break;
425 }
426 }
427
428 /* Get the physical address (32-bit for RSDT, 64-bit for XSDT) */
429
430 if (pointer_size == sizeof(u32)) {
431 acpi_gbl_root_table_list.
432 tables[acpi_gbl_root_table_list.count].address =
433 (acpi_physical_address) (*ACPI_CAST_PTR
434 (u32, table_entry));
435 } else {
436 acpi_gbl_root_table_list.
437 tables[acpi_gbl_root_table_list.count].address =
438 (acpi_physical_address) (*ACPI_CAST_PTR
439 (u64, table_entry));
440 }
441
442 acpi_gbl_root_table_list.count++;
294 } 443 }
295 444
296 ACPI_WARNING((AE_INFO, 445 /*
297 "Incorrect checksum in table [%4.4s] - is %2.2X, should be %2.2X", 446 * It is not possible to map more than one entry in some environments,
298 table_header->signature, table_header->checksum, 447 * so unmap the root table here before mapping other tables
299 checksum)); 448 */
449 acpi_os_unmap_memory(table, length);
450
451 /* Initialize all tables other than the DSDT and FACS */
452
453 for (i = 2; i < acpi_gbl_root_table_list.count; i++) {
454 address = acpi_gbl_root_table_list.tables[i].address;
455 length = sizeof(struct acpi_table_header);
456
457 table = acpi_os_map_memory(address, length);
458 if (!table) {
459 continue;
460 }
461
462 acpi_gbl_root_table_list.tables[i].length = table->length;
463 acpi_gbl_root_table_list.tables[i].flags = flags;
464
465 ACPI_MOVE_32_TO_32(&
466 (acpi_gbl_root_table_list.tables[i].
467 signature), table->signature);
468
469 acpi_tb_print_table_header(address, table);
470
471 /*
472 * Special case for the FADT because of multiple versions -
473 * get a local copy and convert to common format
474 */
475 if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_FADT)) {
476 acpi_os_unmap_memory(table, length);
477 length = table->length;
478
479 table = acpi_os_map_memory(address, length);
480 if (!table) {
481 continue;
482 }
483
484 /* Copy the entire FADT locally */
485
486 ACPI_MEMCPY(&acpi_gbl_FADT, table,
487 ACPI_MIN(table->length,
488 sizeof(struct acpi_table_fadt)));
489
490 /* Small table means old revision, convert to new */
491
492 if (table->length < sizeof(struct acpi_table_fadt)) {
493 acpi_tb_convert_fadt(ACPI_CAST_PTR
494 (struct acpi_table_fadt,
495 table));
496 }
497
498 /* Unmap original FADT */
300 499
301 return_ACPI_STATUS(AE_BAD_CHECKSUM); 500 acpi_os_unmap_memory(table, length);
501 acpi_tb_parse_fadt(&acpi_gbl_FADT, flags);
502 } else {
503 acpi_os_unmap_memory(table, length);
504 }
505 }
506
507 return_ACPI_STATUS(AE_OK);
302} 508}
303 509
304#ifdef ACPI_OBSOLETE_FUNCTIONS 510/******************************************************************************
305/*******************************************************************************
306 * 511 *
307 * FUNCTION: acpi_tb_handle_to_object 512 * FUNCTION: acpi_tb_map
308 * 513 *
309 * PARAMETERS: table_id - Id for which the function is searching 514 * PARAMETERS: Address - Address to be mapped
310 * table_desc - Pointer to return the matching table 515 * Length - Length to be mapped
311 * descriptor. 516 * Flags - Logical or physical addressing mode
312 * 517 *
313 * RETURN: Search the tables to find one with a matching table_id and 518 * RETURN: Pointer to mapped region
314 * return a pointer to that table descriptor.
315 * 519 *
316 ******************************************************************************/ 520 * DESCRIPTION: Maps memory according to flag
521 *
522 *****************************************************************************/
317 523
318acpi_status 524void *acpi_tb_map(acpi_physical_address address, u32 length, u32 flags)
319acpi_tb_handle_to_object(u16 table_id,
320 struct acpi_table_desc **return_table_desc)
321{ 525{
322 u32 i;
323 struct acpi_table_desc *table_desc;
324 526
325 ACPI_FUNCTION_NAME(tb_handle_to_object); 527 if (flags == ACPI_TABLE_ORIGIN_MAPPED) {
528 return (acpi_os_map_memory(address, length));
529 } else {
530 return (ACPI_CAST_PTR(void, address));
531 }
532}
326 533
327 for (i = 0; i < ACPI_TABLE_MAX; i++) { 534/******************************************************************************
328 table_desc = acpi_gbl_table_lists[i].next; 535 *
329 while (table_desc) { 536 * FUNCTION: acpi_tb_unmap
330 if (table_desc->table_id == table_id) { 537 *
331 *return_table_desc = table_desc; 538 * PARAMETERS: Pointer - To mapped region
332 return (AE_OK); 539 * Length - Length to be unmapped
333 } 540 * Flags - Logical or physical addressing mode
541 *
542 * RETURN: None
543 *
544 * DESCRIPTION: Unmaps memory according to flag
545 *
546 *****************************************************************************/
334 547
335 table_desc = table_desc->next; 548void acpi_tb_unmap(void *pointer, u32 length, u32 flags)
336 } 549{
337 }
338 550
339 ACPI_ERROR((AE_INFO, "TableId=%X does not exist", table_id)); 551 if (flags == ACPI_TABLE_ORIGIN_MAPPED) {
340 return (AE_BAD_PARAMETER); 552 acpi_os_unmap_memory(pointer, length);
553 }
341} 554}
342#endif
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c
index 5ba9303293ad..77439fc36c32 100644
--- a/drivers/acpi/tables/tbxface.c
+++ b/drivers/acpi/tables/tbxface.c
@@ -49,80 +49,146 @@
49#define _COMPONENT ACPI_TABLES 49#define _COMPONENT ACPI_TABLES
50ACPI_MODULE_NAME("tbxface") 50ACPI_MODULE_NAME("tbxface")
51 51
52/* Local prototypes */
53static acpi_status acpi_tb_load_namespace(void);
54
52/******************************************************************************* 55/*******************************************************************************
53 * 56 *
54 * FUNCTION: acpi_load_tables 57 * FUNCTION: acpi_initialize_tables
55 * 58 *
56 * PARAMETERS: None 59 * PARAMETERS: initial_table_array - Pointer to an array of pre-allocated
60 * struct acpi_table_desc structures. If NULL, the
61 * array is dynamically allocated.
62 * initial_table_count - Size of initial_table_array, in number of
63 * struct acpi_table_desc structures
64 * allow_realloc - Flag to tell Table Manager if resize of
65 * pre-allocated array is allowed. Ignored
66 * if initial_table_array is NULL.
57 * 67 *
58 * RETURN: Status 68 * RETURN: Status
59 * 69 *
60 * DESCRIPTION: This function is called to load the ACPI tables from the 70 * DESCRIPTION: Initialize the table manager, get the RSDP and RSDT/XSDT.
61 * provided RSDT 71 *
72 * NOTE: Allows static allocation of the initial table array in order
73 * to avoid the use of dynamic memory in confined environments
74 * such as the kernel boot sequence where it may not be available.
75 *
76 * If the host OS memory managers are initialized, use NULL for
77 * initial_table_array, and the table will be dynamically allocated.
62 * 78 *
63 ******************************************************************************/ 79 ******************************************************************************/
64acpi_status acpi_load_tables(void) 80
81acpi_status
82acpi_initialize_tables(struct acpi_table_desc *initial_table_array,
83 u32 initial_table_count, u8 allow_resize)
65{ 84{
66 struct acpi_pointer rsdp_address; 85 acpi_physical_address address;
67 acpi_status status; 86 acpi_status status;
87 struct acpi_table_rsdp *rsdp;
68 88
69 ACPI_FUNCTION_TRACE(acpi_load_tables); 89 ACPI_FUNCTION_TRACE(acpi_initialize_tables);
70 90
71 /* Get the RSDP */ 91 /*
92 * Set up the Root Table Array
93 * Allocate the table array if requested
94 */
95 if (!initial_table_array) {
96 acpi_gbl_root_table_list.size = initial_table_count;
97 acpi_gbl_root_table_list.flags = ACPI_TABLE_FLAGS_ALLOW_RESIZE;
72 98
73 status = acpi_os_get_root_pointer(ACPI_LOGICAL_ADDRESSING, 99 status = acpi_tb_resize_root_table_list();
74 &rsdp_address); 100 if (ACPI_FAILURE(status)) {
75 if (ACPI_FAILURE(status)) { 101 return_ACPI_STATUS(status);
76 ACPI_EXCEPTION((AE_INFO, status, "Could not get the RSDP")); 102 }
77 goto error_exit; 103 } else {
104 /* Root Table Array has been statically allocated by the host */
105
106 acpi_gbl_root_table_list.tables = initial_table_array;
107 acpi_gbl_root_table_list.size = initial_table_count;
108 acpi_gbl_root_table_list.flags = ACPI_TABLE_ORIGIN_UNKNOWN;
109 if (allow_resize) {
110 acpi_gbl_root_table_list.flags =
111 ACPI_TABLE_FLAGS_ALLOW_RESIZE;
112 }
78 } 113 }
79 114
80 /* Map and validate the RSDP */ 115 /* Get the RSDP and map it */
81 116
82 acpi_gbl_table_flags = rsdp_address.pointer_type; 117 address = acpi_os_get_root_pointer();
118 if (!address) {
119 return_ACPI_STATUS(AE_NOT_FOUND);
120 }
83 121
84 status = acpi_tb_verify_rsdp(&rsdp_address); 122 rsdp = acpi_os_map_memory(address, sizeof(struct acpi_table_rsdp));
85 if (ACPI_FAILURE(status)) { 123 if (!rsdp) {
86 ACPI_EXCEPTION((AE_INFO, status, "During RSDP validation")); 124 return_ACPI_STATUS(AE_NO_MEMORY);
87 goto error_exit;
88 } 125 }
89 126
90 /* Get the RSDT via the RSDP */ 127 ACPI_INFO((AE_INFO, "%.8s @ 0x%p",
128 rsdp->signature, ACPI_CAST_PTR(void, address)));
91 129
92 status = acpi_tb_get_table_rsdt(); 130 /*
93 if (ACPI_FAILURE(status)) { 131 * Get the root table (RSDT or XSDT) and extract all entries to the local
94 ACPI_EXCEPTION((AE_INFO, status, "Could not load RSDT")); 132 * Root Table Array. This array contains the information of the RSDT/XSDT
95 goto error_exit; 133 * in a common, more useable format.
96 } 134 */
135 status = acpi_tb_parse_root_table(rsdp, ACPI_TABLE_ORIGIN_MAPPED);
136 acpi_os_unmap_memory(rsdp, sizeof(struct acpi_table_rsdp));
137 return_ACPI_STATUS(status);
138}
97 139
98 /* Now get the tables needed by this subsystem (FADT, DSDT, etc.) */ 140ACPI_EXPORT_SYMBOL(acpi_initialize_tables)
99 141
100 status = acpi_tb_get_required_tables(); 142/*******************************************************************************
101 if (ACPI_FAILURE(status)) { 143 *
102 ACPI_EXCEPTION((AE_INFO, status, 144 * FUNCTION: acpi_reallocate_root_table
103 "Could not get all required tables (DSDT/FADT/FACS)")); 145 *
104 goto error_exit; 146 * PARAMETERS: None
147 *
148 * RETURN: Status
149 *
150 * DESCRIPTION: Reallocate Root Table List into dynamic memory. Copies the
151 * root list from the previously provided scratch area. Should
152 * be called once dynamic memory allocation is available in the
153 * kernel
154 *
155 ******************************************************************************/
156acpi_status acpi_reallocate_root_table(void)
157{
158 struct acpi_table_desc *tables;
159 acpi_size new_size;
160
161 ACPI_FUNCTION_TRACE(acpi_reallocate_root_table);
162
163 /*
164 * Only reallocate the root table if the host provided a static buffer
165 * for the table array in the call to acpi_initialize_tables.
166 */
167 if ((acpi_gbl_root_table_list.flags & ACPI_TABLE_ORIGIN_MASK) !=
168 ACPI_TABLE_ORIGIN_UNKNOWN) {
169 return_ACPI_STATUS(AE_SUPPORT);
105 } 170 }
106 171
107 ACPI_DEBUG_PRINT((ACPI_DB_INIT, "ACPI Tables successfully acquired\n")); 172 new_size =
173 (acpi_gbl_root_table_list.count +
174 ACPI_ROOT_TABLE_SIZE_INCREMENT) * sizeof(struct acpi_table_desc);
108 175
109 /* Load the namespace from the tables */ 176 /* Create new array and copy the old array */
110 177
111 status = acpi_ns_load_namespace(); 178 tables = ACPI_ALLOCATE_ZEROED(new_size);
112 if (ACPI_FAILURE(status)) { 179 if (!tables) {
113 ACPI_EXCEPTION((AE_INFO, status, "Could not load namespace")); 180 return_ACPI_STATUS(AE_NO_MEMORY);
114 goto error_exit;
115 } 181 }
116 182
117 return_ACPI_STATUS(AE_OK); 183 ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables, new_size);
118 184
119 error_exit: 185 acpi_gbl_root_table_list.size = acpi_gbl_root_table_list.count;
120 ACPI_EXCEPTION((AE_INFO, status, "Could not load tables")); 186 acpi_gbl_root_table_list.tables = tables;
121 return_ACPI_STATUS(status); 187 acpi_gbl_root_table_list.flags =
122} 188 ACPI_TABLE_ORIGIN_ALLOCATED | ACPI_TABLE_FLAGS_ALLOW_RESIZE;
123
124ACPI_EXPORT_SYMBOL(acpi_load_tables)
125 189
190 return_ACPI_STATUS(AE_OK);
191}
126/******************************************************************************* 192/*******************************************************************************
127 * 193 *
128 * FUNCTION: acpi_load_table 194 * FUNCTION: acpi_load_table
@@ -141,342 +207,358 @@ ACPI_EXPORT_SYMBOL(acpi_load_tables)
141acpi_status acpi_load_table(struct acpi_table_header *table_ptr) 207acpi_status acpi_load_table(struct acpi_table_header *table_ptr)
142{ 208{
143 acpi_status status; 209 acpi_status status;
144 struct acpi_table_desc table_info; 210 acpi_native_uint table_index;
145 struct acpi_pointer address;
146
147 ACPI_FUNCTION_TRACE(acpi_load_table);
148
149 if (!table_ptr) {
150 return_ACPI_STATUS(AE_BAD_PARAMETER);
151 }
152 211
153 /* Copy the table to a local buffer */ 212 /*
154 213 * Install the new table into the local data structures
155 address.pointer_type = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING; 214 */
156 address.pointer.logical = table_ptr; 215 status = acpi_tb_add_table(table_ptr, &table_index);
157
158 status = acpi_tb_get_table_body(&address, table_ptr, &table_info);
159 if (ACPI_FAILURE(status)) {
160 return_ACPI_STATUS(status);
161 }
162
163 /* Check signature for a valid table type */
164
165 status = acpi_tb_recognize_table(&table_info, ACPI_TABLE_ALL);
166 if (ACPI_FAILURE(status)) { 216 if (ACPI_FAILURE(status)) {
167 return_ACPI_STATUS(status); 217 return_ACPI_STATUS(status);
168 } 218 }
219 status = acpi_ns_load_table(table_index, acpi_gbl_root_node);
220 return_ACPI_STATUS(status);
221}
169 222
170 /* Install the new table into the local data structures */ 223ACPI_EXPORT_SYMBOL(acpi_load_table)
171
172 status = acpi_tb_install_table(&table_info);
173 if (ACPI_FAILURE(status)) {
174 if (status == AE_ALREADY_EXISTS) {
175 224
176 /* Table already exists, no error */ 225/******************************************************************************
226 *
227 * FUNCTION: acpi_get_table_header
228 *
229 * PARAMETERS: Signature - ACPI signature of needed table
230 * Instance - Which instance (for SSDTs)
231 * out_table_header - Where the pointer to the table header
232 * is returned
233 *
234 * RETURN: Status and pointer to mapped table header
235 *
236 * DESCRIPTION: Finds an ACPI table header.
237 *
238 * NOTE: Caller is responsible in unmapping the header with
239 * acpi_os_unmap_memory
240 *
241 *****************************************************************************/
242acpi_status
243acpi_get_table_header(char *signature,
244 acpi_native_uint instance,
245 struct acpi_table_header **out_table_header)
246{
247 acpi_native_uint i;
248 acpi_native_uint j;
177 249
178 status = AE_OK; 250 /*
251 * Walk the root table list
252 */
253 for (i = 0, j = 0; i < acpi_gbl_root_table_list.count; i++) {
254 if (!ACPI_COMPARE_NAME
255 (&(acpi_gbl_root_table_list.tables[i].signature),
256 signature)) {
257 continue;
179 } 258 }
180 259
181 /* Free table allocated by acpi_tb_get_table_body */ 260 if (++j < instance) {
182 261 continue;
183 acpi_tb_delete_single_table(&table_info); 262 }
184 return_ACPI_STATUS(status);
185 }
186
187 /* Convert the table to common format if necessary */
188
189 switch (table_info.type) {
190 case ACPI_TABLE_ID_FADT:
191
192 status = acpi_tb_convert_table_fadt();
193 break;
194
195 case ACPI_TABLE_ID_FACS:
196
197 status = acpi_tb_build_common_facs(&table_info);
198 break;
199
200 default:
201 /* Load table into namespace if it contains executable AML */
202
203 status =
204 acpi_ns_load_table(table_info.installed_desc,
205 acpi_gbl_root_node);
206 break;
207 }
208 263
209 if (ACPI_FAILURE(status)) { 264 *out_table_header =
265 acpi_tb_map(acpi_gbl_root_table_list.tables[i].address,
266 (u32) sizeof(struct acpi_table_header),
267 acpi_gbl_root_table_list.tables[i].
268 flags & ACPI_TABLE_ORIGIN_MASK);
210 269
211 /* Uninstall table and free the buffer */ 270 if (!out_table_header) {
271 return (AE_NO_MEMORY);
272 }
212 273
213 (void)acpi_tb_uninstall_table(table_info.installed_desc); 274 return (AE_OK);
214 } 275 }
215 276
216 return_ACPI_STATUS(status); 277 return (AE_NOT_FOUND);
217} 278}
218 279
219ACPI_EXPORT_SYMBOL(acpi_load_table) 280ACPI_EXPORT_SYMBOL(acpi_get_table_header)
220 281
221/******************************************************************************* 282
283/******************************************************************************
222 * 284 *
223 * FUNCTION: acpi_unload_table_id 285 * FUNCTION: acpi_unload_table_id
224 * 286 *
225 * PARAMETERS: table_type - Type of table to be unloaded 287 * PARAMETERS: id - Owner ID of the table to be removed.
226 * id - Owner ID of the table to be removed.
227 * 288 *
228 * RETURN: Status 289 * RETURN: Status
229 * 290 *
230 * DESCRIPTION: This routine is used to force the unload of a table (by id) 291 * DESCRIPTION: This routine is used to force the unload of a table (by id)
231 * 292 *
232 ******************************************************************************/ 293 ******************************************************************************/
233acpi_status acpi_unload_table_id(acpi_table_type table_type, acpi_owner_id id) 294acpi_status acpi_unload_table_id(acpi_owner_id id)
234{ 295{
235 struct acpi_table_desc *table_desc; 296 int i;
236 acpi_status status; 297 acpi_status status = AE_NOT_EXIST;
237 298
238 ACPI_FUNCTION_TRACE(acpi_unload_table); 299 ACPI_FUNCTION_TRACE(acpi_unload_table);
239 300
240 /* Parameter validation */
241 if (table_type > ACPI_TABLE_ID_MAX)
242 return_ACPI_STATUS(AE_BAD_PARAMETER);
243
244 /* Find table from the requested type list */ 301 /* Find table from the requested type list */
245 table_desc = acpi_gbl_table_lists[table_type].next; 302 for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
246 while (table_desc && table_desc->owner_id != id) 303 if (id != acpi_gbl_root_table_list.tables[i].owner_id) {
247 table_desc = table_desc->next; 304 continue;
248 305 }
249 if (!table_desc) 306 /*
250 return_ACPI_STATUS(AE_NOT_EXIST); 307 * Delete all namespace objects owned by this table. Note that these
251 308 * objects can appear anywhere in the namespace by virtue of the AML
252 /* 309 * "Scope" operator. Thus, we need to track ownership by an ID, not
253 * Delete all namespace objects owned by this table. Note that these 310 * simply a position within the hierarchy
254 * objects can appear anywhere in the namespace by virtue of the AML 311 */
255 * "Scope" operator. Thus, we need to track ownership by an ID, not 312 acpi_tb_delete_namespace_by_owner(i);
256 * simply a position within the hierarchy 313 acpi_tb_release_owner_id(i);
257 */ 314 acpi_tb_set_table_loaded_flag(i, FALSE);
258 acpi_ns_delete_namespace_by_owner(table_desc->owner_id); 315 }
259 316 return_ACPI_STATUS(status);
260 status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
261 if (ACPI_FAILURE(status))
262 return_ACPI_STATUS(status);
263
264 (void)acpi_tb_uninstall_table(table_desc);
265
266 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
267
268 return_ACPI_STATUS(AE_OK);
269} 317}
270 318
271ACPI_EXPORT_SYMBOL(acpi_unload_table_id) 319ACPI_EXPORT_SYMBOL(acpi_unload_table_id)
272 320
273#ifdef ACPI_FUTURE_USAGE
274/******************************************************************************* 321/*******************************************************************************
275 * 322 *
276 * FUNCTION: acpi_unload_table 323 * FUNCTION: acpi_get_table
277 * 324 *
278 * PARAMETERS: table_type - Type of table to be unloaded 325 * PARAMETERS: Signature - ACPI signature of needed table
326 * Instance - Which instance (for SSDTs)
327 * out_table - Where the pointer to the table is returned
279 * 328 *
280 * RETURN: Status 329 * RETURN: Status and pointer to table
281 * 330 *
282 * DESCRIPTION: This routine is used to force the unload of a table 331 * DESCRIPTION: Finds and verifies an ACPI table.
283 * 332 *
284 ******************************************************************************/ 333 *****************************************************************************/
285acpi_status acpi_unload_table(acpi_table_type table_type) 334acpi_status
335acpi_get_table(char *signature,
336 acpi_native_uint instance, struct acpi_table_header ** out_table)
286{ 337{
287 struct acpi_table_desc *table_desc; 338 acpi_native_uint i;
288 339 acpi_native_uint j;
289 ACPI_FUNCTION_TRACE(acpi_unload_table); 340 acpi_status status;
290
291 /* Parameter validation */
292 341
293 if (table_type > ACPI_TABLE_ID_MAX) { 342 /*
294 return_ACPI_STATUS(AE_BAD_PARAMETER); 343 * Walk the root table list
295 } 344 */
345 for (i = 0, j = 0; i < acpi_gbl_root_table_list.count; i++) {
346 if (!ACPI_COMPARE_NAME
347 (&(acpi_gbl_root_table_list.tables[i].signature),
348 signature)) {
349 continue;
350 }
296 351
297 /* Find all tables of the requested type */ 352 if (++j < instance) {
353 continue;
354 }
298 355
299 table_desc = acpi_gbl_table_lists[table_type].next; 356 status =
300 if (!table_desc) { 357 acpi_tb_verify_table(&acpi_gbl_root_table_list.tables[i]);
301 return_ACPI_STATUS(AE_NOT_EXIST); 358 if (ACPI_SUCCESS(status)) {
302 } 359 *out_table = acpi_gbl_root_table_list.tables[i].pointer;
360 }
303 361
304 while (table_desc) { 362 return (status);
305 /*
306 * Delete all namespace objects owned by this table. Note that these
307 * objects can appear anywhere in the namespace by virtue of the AML
308 * "Scope" operator. Thus, we need to track ownership by an ID, not
309 * simply a position within the hierarchy
310 */
311 acpi_ns_delete_namespace_by_owner(table_desc->owner_id);
312 table_desc = table_desc->next;
313 } 363 }
314 364
315 /* Delete (or unmap) all tables of this type */ 365 return (AE_NOT_FOUND);
316
317 acpi_tb_delete_tables_by_type(table_type);
318 return_ACPI_STATUS(AE_OK);
319} 366}
320 367
321ACPI_EXPORT_SYMBOL(acpi_unload_table) 368ACPI_EXPORT_SYMBOL(acpi_get_table)
322 369
323/******************************************************************************* 370/*******************************************************************************
324 * 371 *
325 * FUNCTION: acpi_get_table_header 372 * FUNCTION: acpi_get_table_by_index
326 * 373 *
327 * PARAMETERS: table_type - one of the defined table types 374 * PARAMETERS: table_index - Table index
328 * Instance - the non zero instance of the table, allows 375 * Table - Where the pointer to the table is returned
329 * support for multiple tables of the same type
330 * see acpi_gbl_acpi_table_flag
331 * out_table_header - pointer to the struct acpi_table_header if successful
332 * 376 *
333 * DESCRIPTION: This function is called to get an ACPI table header. The caller 377 * RETURN: Status and pointer to the table
334 * supplies an pointer to a data area sufficient to contain an ACPI
335 * struct acpi_table_header structure.
336 * 378 *
337 * The header contains a length field that can be used to determine 379 * DESCRIPTION: Obtain a table by an index into the global table list.
338 * the size of the buffer needed to contain the entire table. This
339 * function is not valid for the RSD PTR table since it does not
340 * have a standard header and is fixed length.
341 * 380 *
342 ******************************************************************************/ 381 ******************************************************************************/
343acpi_status 382acpi_status
344acpi_get_table_header(acpi_table_type table_type, 383acpi_get_table_by_index(acpi_native_uint table_index,
345 u32 instance, struct acpi_table_header *out_table_header) 384 struct acpi_table_header ** table)
346{ 385{
347 struct acpi_table_header *tbl_ptr;
348 acpi_status status; 386 acpi_status status;
349 387
350 ACPI_FUNCTION_TRACE(acpi_get_table_header); 388 ACPI_FUNCTION_TRACE(acpi_get_table_by_index);
351 389
352 if ((instance == 0) || 390 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
353 (table_type == ACPI_TABLE_ID_RSDP) || (!out_table_header)) {
354 return_ACPI_STATUS(AE_BAD_PARAMETER);
355 }
356 391
357 /* Check the table type and instance */ 392 /* Validate index */
358 393
359 if ((table_type > ACPI_TABLE_ID_MAX) || 394 if (table_index >= acpi_gbl_root_table_list.count) {
360 (ACPI_IS_SINGLE_TABLE(acpi_gbl_table_data[table_type].flags) && 395 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
361 instance > 1)) {
362 return_ACPI_STATUS(AE_BAD_PARAMETER); 396 return_ACPI_STATUS(AE_BAD_PARAMETER);
363 } 397 }
364 398
365 /* Get a pointer to the entire table */ 399 if (!acpi_gbl_root_table_list.tables[table_index].pointer) {
366 400
367 status = acpi_tb_get_table_ptr(table_type, instance, &tbl_ptr); 401 /* Table is not mapped, map it */
368 if (ACPI_FAILURE(status)) {
369 return_ACPI_STATUS(status);
370 }
371 402
372 /* The function will return a NULL pointer if the table is not loaded */ 403 status =
373 404 acpi_tb_verify_table(&acpi_gbl_root_table_list.
374 if (tbl_ptr == NULL) { 405 tables[table_index]);
375 return_ACPI_STATUS(AE_NOT_EXIST); 406 if (ACPI_FAILURE(status)) {
407 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
408 return_ACPI_STATUS(status);
409 }
376 } 410 }
377 411
378 /* Copy the header to the caller's buffer */ 412 *table = acpi_gbl_root_table_list.tables[table_index].pointer;
379 413 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
380 ACPI_MEMCPY(ACPI_CAST_PTR(void, out_table_header), 414 return_ACPI_STATUS(AE_OK);
381 ACPI_CAST_PTR(void, tbl_ptr),
382 sizeof(struct acpi_table_header));
383
384 return_ACPI_STATUS(status);
385} 415}
386 416
387ACPI_EXPORT_SYMBOL(acpi_get_table_header) 417ACPI_EXPORT_SYMBOL(acpi_get_table_by_index)
388#endif /* ACPI_FUTURE_USAGE */
389 418
390/******************************************************************************* 419/*******************************************************************************
391 * 420 *
392 * FUNCTION: acpi_get_table 421 * FUNCTION: acpi_tb_load_namespace
393 * 422 *
394 * PARAMETERS: table_type - one of the defined table types 423 * PARAMETERS: None
395 * Instance - the non zero instance of the table, allows
396 * support for multiple tables of the same type
397 * see acpi_gbl_acpi_table_flag
398 * ret_buffer - pointer to a structure containing a buffer to
399 * receive the table
400 * 424 *
401 * RETURN: Status 425 * RETURN: Status
402 * 426 *
403 * DESCRIPTION: This function is called to get an ACPI table. The caller 427 * DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in
404 * supplies an out_buffer large enough to contain the entire ACPI 428 * the RSDT/XSDT.
405 * table. The caller should call the acpi_get_table_header function
406 * first to determine the buffer size needed. Upon completion
407 * the out_buffer->Length field will indicate the number of bytes
408 * copied into the out_buffer->buf_ptr buffer. This table will be
409 * a complete table including the header.
410 * 429 *
411 ******************************************************************************/ 430 ******************************************************************************/
412acpi_status 431static acpi_status acpi_tb_load_namespace(void)
413acpi_get_table(acpi_table_type table_type,
414 u32 instance, struct acpi_buffer *ret_buffer)
415{ 432{
416 struct acpi_table_header *tbl_ptr;
417 acpi_status status; 433 acpi_status status;
418 acpi_size table_length; 434 struct acpi_table_header *table;
435 acpi_native_uint i;
419 436
420 ACPI_FUNCTION_TRACE(acpi_get_table); 437 ACPI_FUNCTION_TRACE(tb_load_namespace);
421 438
422 /* Parameter validation */ 439 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
423 440
424 if (instance == 0) { 441 /*
425 return_ACPI_STATUS(AE_BAD_PARAMETER); 442 * Load the namespace. The DSDT is required, but any SSDT and PSDT tables
443 * are optional.
444 */
445 if (!acpi_gbl_root_table_list.count ||
446 !ACPI_COMPARE_NAME(&
447 (acpi_gbl_root_table_list.
448 tables[ACPI_TABLE_INDEX_DSDT].signature),
449 ACPI_SIG_DSDT)
450 ||
451 ACPI_FAILURE(acpi_tb_verify_table
452 (&acpi_gbl_root_table_list.
453 tables[ACPI_TABLE_INDEX_DSDT]))) {
454 status = AE_NO_ACPI_TABLES;
455 goto unlock_and_exit;
426 } 456 }
427 457
428 status = acpi_ut_validate_buffer(ret_buffer); 458 /*
429 if (ACPI_FAILURE(status)) { 459 * Find DSDT table
430 return_ACPI_STATUS(status); 460 */
461 status =
462 acpi_os_table_override(acpi_gbl_root_table_list.
463 tables[ACPI_TABLE_INDEX_DSDT].pointer,
464 &table);
465 if (ACPI_SUCCESS(status) && table) {
466 /*
467 * DSDT table has been found
468 */
469 acpi_tb_delete_table(ACPI_TABLE_INDEX_DSDT);
470 acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].pointer =
471 table;
472 acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].length =
473 table->length;
474 acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].flags =
475 ACPI_TABLE_ORIGIN_UNKNOWN;
476
477 ACPI_INFO((AE_INFO, "Table DSDT replaced by host OS"));
478 acpi_tb_print_table_header(0, table);
431 } 479 }
432 480
433 /* Check the table type and instance */ 481 status =
482 acpi_tb_verify_table(&acpi_gbl_root_table_list.
483 tables[ACPI_TABLE_INDEX_DSDT]);
484 if (ACPI_FAILURE(status)) {
485
486 /* A valid DSDT is required */
434 487
435 if ((table_type > ACPI_TABLE_ID_MAX) || 488 status = AE_NO_ACPI_TABLES;
436 (ACPI_IS_SINGLE_TABLE(acpi_gbl_table_data[table_type].flags) && 489 goto unlock_and_exit;
437 instance > 1)) {
438 return_ACPI_STATUS(AE_BAD_PARAMETER);
439 } 490 }
440 491
441 /* Get a pointer to the entire table */ 492 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
442 493
443 status = acpi_tb_get_table_ptr(table_type, instance, &tbl_ptr); 494 /*
495 * Load and parse tables.
496 */
497 status = acpi_ns_load_table(ACPI_TABLE_INDEX_DSDT, acpi_gbl_root_node);
444 if (ACPI_FAILURE(status)) { 498 if (ACPI_FAILURE(status)) {
445 return_ACPI_STATUS(status); 499 return_ACPI_STATUS(status);
446 } 500 }
447 501
448 /* 502 /*
449 * acpi_tb_get_table_ptr will return a NULL pointer if the 503 * Load any SSDT or PSDT tables. Note: Loop leaves tables locked
450 * table is not loaded.
451 */ 504 */
452 if (tbl_ptr == NULL) { 505 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
453 return_ACPI_STATUS(AE_NOT_EXIST); 506 for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
507 if ((!ACPI_COMPARE_NAME
508 (&(acpi_gbl_root_table_list.tables[i].signature),
509 ACPI_SIG_SSDT)
510 &&
511 !ACPI_COMPARE_NAME(&
512 (acpi_gbl_root_table_list.tables[i].
513 signature), ACPI_SIG_PSDT))
514 ||
515 ACPI_FAILURE(acpi_tb_verify_table
516 (&acpi_gbl_root_table_list.tables[i]))) {
517 continue;
518 }
519
520 /* Ignore errors while loading tables, get as many as possible */
521
522 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
523 (void)acpi_ns_load_table(i, acpi_gbl_root_node);
524 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
454 } 525 }
455 526
456 /* Get the table length */ 527 ACPI_DEBUG_PRINT((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
457 528
458 if (table_type == ACPI_TABLE_ID_RSDP) { 529 unlock_and_exit:
530 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
531 return_ACPI_STATUS(status);
532}
459 533
460 /* RSD PTR is the only "table" without a header */ 534/*******************************************************************************
535 *
536 * FUNCTION: acpi_load_tables
537 *
538 * PARAMETERS: None
539 *
540 * RETURN: Status
541 *
542 * DESCRIPTION: Load the ACPI tables from the RSDT/XSDT
543 *
544 ******************************************************************************/
461 545
462 table_length = sizeof(struct rsdp_descriptor); 546acpi_status acpi_load_tables(void)
463 } else { 547{
464 table_length = (acpi_size) tbl_ptr->length; 548 acpi_status status;
465 }
466 549
467 /* Validate/Allocate/Clear caller buffer */ 550 ACPI_FUNCTION_TRACE(acpi_load_tables);
468 551
469 status = acpi_ut_initialize_buffer(ret_buffer, table_length); 552 /*
553 * Load the namespace from the tables
554 */
555 status = acpi_tb_load_namespace();
470 if (ACPI_FAILURE(status)) { 556 if (ACPI_FAILURE(status)) {
471 return_ACPI_STATUS(status); 557 ACPI_EXCEPTION((AE_INFO, status,
558 "While loading namespace from ACPI tables"));
472 } 559 }
473 560
474 /* Copy the table to the buffer */ 561 return_ACPI_STATUS(status);
475
476 ACPI_MEMCPY(ACPI_CAST_PTR(void, ret_buffer->pointer),
477 ACPI_CAST_PTR(void, tbl_ptr), table_length);
478
479 return_ACPI_STATUS(AE_OK);
480} 562}
481 563
482ACPI_EXPORT_SYMBOL(acpi_get_table) 564ACPI_EXPORT_SYMBOL(acpi_load_tables)
diff --git a/drivers/acpi/tables/tbxfroot.c b/drivers/acpi/tables/tbxfroot.c
index da2648bbdbc0..5c6e88251c1a 100644
--- a/drivers/acpi/tables/tbxfroot.c
+++ b/drivers/acpi/tables/tbxfroot.c
@@ -48,16 +48,15 @@
48ACPI_MODULE_NAME("tbxfroot") 48ACPI_MODULE_NAME("tbxfroot")
49 49
50/* Local prototypes */ 50/* Local prototypes */
51static acpi_status
52acpi_tb_find_rsdp(struct acpi_table_desc *table_info, u32 flags);
53
54static u8 *acpi_tb_scan_memory_for_rsdp(u8 * start_address, u32 length); 51static u8 *acpi_tb_scan_memory_for_rsdp(u8 * start_address, u32 length);
55 52
53static acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp);
54
56/******************************************************************************* 55/*******************************************************************************
57 * 56 *
58 * FUNCTION: acpi_tb_validate_rsdp 57 * FUNCTION: acpi_tb_validate_rsdp
59 * 58 *
60 * PARAMETERS: Rsdp - Pointer to unvalidated RSDP 59 * PARAMETERS: Rsdp - Pointer to unvalidated RSDP
61 * 60 *
62 * RETURN: Status 61 * RETURN: Status
63 * 62 *
@@ -65,14 +64,18 @@ static u8 *acpi_tb_scan_memory_for_rsdp(u8 * start_address, u32 length);
65 * 64 *
66 ******************************************************************************/ 65 ******************************************************************************/
67 66
68acpi_status acpi_tb_validate_rsdp(struct rsdp_descriptor *rsdp) 67static acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp)
69{ 68{
70 ACPI_FUNCTION_ENTRY(); 69 ACPI_FUNCTION_ENTRY();
71 70
72 /* 71 /*
73 * The signature and checksum must both be correct 72 * The signature and checksum must both be correct
73 *
74 * Note: Sometimes there exists more than one RSDP in memory; the valid
75 * RSDP has a valid checksum, all others have an invalid checksum.
74 */ 76 */
75 if (ACPI_STRNCMP((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0) { 77 if (ACPI_STRNCMP((char *)rsdp, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)
78 != 0) {
76 79
77 /* Nope, BAD Signature */ 80 /* Nope, BAD Signature */
78 81
@@ -81,330 +84,141 @@ acpi_status acpi_tb_validate_rsdp(struct rsdp_descriptor *rsdp)
81 84
82 /* Check the standard checksum */ 85 /* Check the standard checksum */
83 86
84 if (acpi_tb_sum_table(rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) { 87 if (acpi_tb_checksum((u8 *) rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
85 return (AE_BAD_CHECKSUM); 88 return (AE_BAD_CHECKSUM);
86 } 89 }
87 90
88 /* Check extended checksum if table version >= 2 */ 91 /* Check extended checksum if table version >= 2 */
89 92
90 if ((rsdp->revision >= 2) && 93 if ((rsdp->revision >= 2) &&
91 (acpi_tb_sum_table(rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0)) { 94 (acpi_tb_checksum((u8 *) rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0)) {
92 return (AE_BAD_CHECKSUM); 95 return (AE_BAD_CHECKSUM);
93 } 96 }
94 97
95 return (AE_OK); 98 return (AE_OK);
96} 99}
97 100
101#if ACPI_MACHINE_WIDTH != 16
102
98/******************************************************************************* 103/*******************************************************************************
99 * 104 *
100 * FUNCTION: acpi_tb_find_table 105 * FUNCTION: acpi_tb_find_rsdp
101 *
102 * PARAMETERS: Signature - String with ACPI table signature
103 * oem_id - String with the table OEM ID
104 * oem_table_id - String with the OEM Table ID
105 * table_ptr - Where the table pointer is returned
106 *
107 * RETURN: Status
108 * 106 *
109 * DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the 107 * PARAMETERS: table_address - Where the table pointer is returned
110 * Signature, OEM ID and OEM Table ID.
111 * 108 *
112 ******************************************************************************/ 109 * RETURN: Status, RSDP physical address
113
114acpi_status
115acpi_tb_find_table(char *signature,
116 char *oem_id,
117 char *oem_table_id, struct acpi_table_header ** table_ptr)
118{
119 acpi_status status;
120 struct acpi_table_header *table;
121
122 ACPI_FUNCTION_TRACE(tb_find_table);
123
124 /* Validate string lengths */
125
126 if ((ACPI_STRLEN(signature) > ACPI_NAME_SIZE) ||
127 (ACPI_STRLEN(oem_id) > sizeof(table->oem_id)) ||
128 (ACPI_STRLEN(oem_table_id) > sizeof(table->oem_table_id))) {
129 return_ACPI_STATUS(AE_AML_STRING_LIMIT);
130 }
131
132 if (ACPI_COMPARE_NAME(signature, DSDT_SIG)) {
133 /*
134 * The DSDT pointer is contained in the FADT, not the RSDT.
135 * This code should suffice, because the only code that would perform
136 * a "find" on the DSDT is the data_table_region() AML opcode -- in
137 * which case, the DSDT is guaranteed to be already loaded.
138 * If this becomes insufficient, the FADT will have to be found first.
139 */
140 if (!acpi_gbl_DSDT) {
141 return_ACPI_STATUS(AE_NO_ACPI_TABLES);
142 }
143 table = acpi_gbl_DSDT;
144 } else {
145 /* Find the table */
146
147 status = acpi_get_firmware_table(signature, 1,
148 ACPI_LOGICAL_ADDRESSING,
149 &table);
150 if (ACPI_FAILURE(status)) {
151 return_ACPI_STATUS(status);
152 }
153 }
154
155 /* Check oem_id and oem_table_id */
156
157 if ((oem_id[0] &&
158 ACPI_STRNCMP(oem_id, table->oem_id,
159 sizeof(table->oem_id))) ||
160 (oem_table_id[0] &&
161 ACPI_STRNCMP(oem_table_id, table->oem_table_id,
162 sizeof(table->oem_table_id)))) {
163 return_ACPI_STATUS(AE_AML_NAME_NOT_FOUND);
164 }
165
166 ACPI_DEBUG_PRINT((ACPI_DB_TABLES, "Found table [%4.4s]\n",
167 table->signature));
168
169 *table_ptr = table;
170 return_ACPI_STATUS(AE_OK);
171}
172
173/*******************************************************************************
174 *
175 * FUNCTION: acpi_get_firmware_table
176 * 110 *
177 * PARAMETERS: Signature - Any ACPI table signature 111 * DESCRIPTION: Search lower 1_mbyte of memory for the root system descriptor
178 * Instance - the non zero instance of the table, allows 112 * pointer structure. If it is found, set *RSDP to point to it.
179 * support for multiple tables of the same type
180 * Flags - Physical/Virtual support
181 * table_pointer - Where a buffer containing the table is
182 * returned
183 * 113 *
184 * RETURN: Status 114 * NOTE1: The RSDP must be either in the first 1_k of the Extended
115 * BIOS Data Area or between E0000 and FFFFF (From ACPI Spec.)
116 * Only a 32-bit physical address is necessary.
185 * 117 *
186 * DESCRIPTION: This function is called to get an ACPI table. A buffer is 118 * NOTE2: This function is always available, regardless of the
187 * allocated for the table and returned in table_pointer. 119 * initialization state of the rest of ACPI.
188 * This table will be a complete table including the header.
189 * 120 *
190 ******************************************************************************/ 121 ******************************************************************************/
191 122
192acpi_status 123acpi_status acpi_find_root_pointer(acpi_native_uint * table_address)
193acpi_get_firmware_table(acpi_string signature,
194 u32 instance,
195 u32 flags, struct acpi_table_header **table_pointer)
196{ 124{
197 acpi_status status; 125 u8 *table_ptr;
198 struct acpi_pointer address; 126 u8 *mem_rover;
199 struct acpi_table_header *header = NULL; 127 u32 physical_address;
200 struct acpi_table_desc *table_info = NULL;
201 struct acpi_table_desc *rsdt_info;
202 u32 table_count;
203 u32 i;
204 u32 j;
205
206 ACPI_FUNCTION_TRACE(acpi_get_firmware_table);
207
208 /*
209 * Ensure that at least the table manager is initialized. We don't
210 * require that the entire ACPI subsystem is up for this interface.
211 * If we have a buffer, we must have a length too
212 */
213 if ((instance == 0) || (!signature) || (!table_pointer)) {
214 return_ACPI_STATUS(AE_BAD_PARAMETER);
215 }
216
217 /* Ensure that we have a RSDP */
218
219 if (!acpi_gbl_RSDP) {
220
221 /* Get the RSDP */
222
223 status = acpi_os_get_root_pointer(flags, &address);
224 if (ACPI_FAILURE(status)) {
225 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "RSDP not found\n"));
226 return_ACPI_STATUS(AE_NO_ACPI_TABLES);
227 }
228
229 /* Map and validate the RSDP */
230
231 if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) {
232 status = acpi_os_map_memory(address.pointer.physical,
233 sizeof(struct
234 rsdp_descriptor),
235 (void *)&acpi_gbl_RSDP);
236 if (ACPI_FAILURE(status)) {
237 return_ACPI_STATUS(status);
238 }
239 } else {
240 acpi_gbl_RSDP = address.pointer.logical;
241 }
242
243 /* The RDSP signature and checksum must both be correct */
244
245 status = acpi_tb_validate_rsdp(acpi_gbl_RSDP);
246 if (ACPI_FAILURE(status)) {
247 return_ACPI_STATUS(status);
248 }
249 }
250
251 /* Get the RSDT address via the RSDP */
252
253 acpi_tb_get_rsdt_address(&address);
254 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
255 "RSDP located at %p, RSDT physical=%8.8X%8.8X\n",
256 acpi_gbl_RSDP,
257 ACPI_FORMAT_UINT64(address.pointer.value)));
258 128
259 /* Insert processor_mode flags */ 129 ACPI_FUNCTION_TRACE(acpi_find_root_pointer);
260 130
261 address.pointer_type |= flags; 131 /* 1a) Get the location of the Extended BIOS Data Area (EBDA) */
262 132
263 /* Get and validate the RSDT */ 133 table_ptr = acpi_os_map_memory((acpi_physical_address)
134 ACPI_EBDA_PTR_LOCATION,
135 ACPI_EBDA_PTR_LENGTH);
136 if (!table_ptr) {
137 ACPI_ERROR((AE_INFO,
138 "Could not map memory at %8.8X for length %X",
139 ACPI_EBDA_PTR_LOCATION, ACPI_EBDA_PTR_LENGTH));
264 140
265 rsdt_info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_table_desc));
266 if (!rsdt_info) {
267 return_ACPI_STATUS(AE_NO_MEMORY); 141 return_ACPI_STATUS(AE_NO_MEMORY);
268 } 142 }
269 143
270 status = acpi_tb_get_table(&address, rsdt_info); 144 ACPI_MOVE_16_TO_32(&physical_address, table_ptr);
271 if (ACPI_FAILURE(status)) {
272 goto cleanup;
273 }
274
275 status = acpi_tb_validate_rsdt(rsdt_info->pointer);
276 if (ACPI_FAILURE(status)) {
277 goto cleanup;
278 }
279
280 /* Allocate a scratch table header and table descriptor */
281
282 header = ACPI_ALLOCATE(sizeof(struct acpi_table_header));
283 if (!header) {
284 status = AE_NO_MEMORY;
285 goto cleanup;
286 }
287 145
288 table_info = ACPI_ALLOCATE(sizeof(struct acpi_table_desc)); 146 /* Convert segment part to physical address */
289 if (!table_info) {
290 status = AE_NO_MEMORY;
291 goto cleanup;
292 }
293 147
294 /* Get the number of table pointers within the RSDT */ 148 physical_address <<= 4;
149 acpi_os_unmap_memory(table_ptr, ACPI_EBDA_PTR_LENGTH);
295 150
296 table_count = 151 /* EBDA present? */
297 acpi_tb_get_table_count(acpi_gbl_RSDP, rsdt_info->pointer);
298 address.pointer_type = acpi_gbl_table_flags | flags;
299 152
300 /* 153 if (physical_address > 0x400) {
301 * Search the RSDT/XSDT for the correct instance of the
302 * requested table
303 */
304 for (i = 0, j = 0; i < table_count; i++) {
305 /* 154 /*
306 * Get the next table pointer, handle RSDT vs. XSDT 155 * 1b) Search EBDA paragraphs (EBDA is required to be a
307 * RSDT pointers are 32 bits, XSDT pointers are 64 bits 156 * minimum of 1_k length)
308 */ 157 */
309 if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) { 158 table_ptr = acpi_os_map_memory((acpi_native_uint)
310 address.pointer.value = 159 physical_address,
311 (ACPI_CAST_PTR 160 ACPI_EBDA_WINDOW_SIZE);
312 (struct rsdt_descriptor, 161 if (!table_ptr) {
313 rsdt_info->pointer))->table_offset_entry[i]; 162 ACPI_ERROR((AE_INFO,
314 } else { 163 "Could not map memory at %8.8X for length %X",
315 address.pointer.value = 164 physical_address, ACPI_EBDA_WINDOW_SIZE));
316 (ACPI_CAST_PTR
317 (struct xsdt_descriptor,
318 rsdt_info->pointer))->table_offset_entry[i];
319 }
320
321 /* Get the table header */
322 165
323 status = acpi_tb_get_table_header(&address, header); 166 return_ACPI_STATUS(AE_NO_MEMORY);
324 if (ACPI_FAILURE(status)) {
325 goto cleanup;
326 } 167 }
327 168
328 /* Compare table signatures and table instance */ 169 mem_rover =
329 170 acpi_tb_scan_memory_for_rsdp(table_ptr,
330 if (ACPI_COMPARE_NAME(header->signature, signature)) { 171 ACPI_EBDA_WINDOW_SIZE);
331 172 acpi_os_unmap_memory(table_ptr, ACPI_EBDA_WINDOW_SIZE);
332 /* An instance of the table was found */
333 173
334 j++; 174 if (mem_rover) {
335 if (j >= instance) {
336 175
337 /* Found the correct instance, get the entire table */ 176 /* Return the physical address */
338 177
339 status = 178 physical_address +=
340 acpi_tb_get_table_body(&address, header, 179 (u32) ACPI_PTR_DIFF(mem_rover, table_ptr);
341 table_info);
342 if (ACPI_FAILURE(status)) {
343 goto cleanup;
344 }
345 180
346 *table_pointer = table_info->pointer; 181 *table_address = physical_address;
347 goto cleanup; 182 return_ACPI_STATUS(AE_OK);
348 }
349 } 183 }
350 } 184 }
351 185
352 /* Did not find the table */ 186 /*
187 * 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh
188 */
189 table_ptr = acpi_os_map_memory((acpi_physical_address)
190 ACPI_HI_RSDP_WINDOW_BASE,
191 ACPI_HI_RSDP_WINDOW_SIZE);
353 192
354 status = AE_NOT_EXIST; 193 if (!table_ptr) {
194 ACPI_ERROR((AE_INFO,
195 "Could not map memory at %8.8X for length %X",
196 ACPI_HI_RSDP_WINDOW_BASE,
197 ACPI_HI_RSDP_WINDOW_SIZE));
355 198
356 cleanup: 199 return_ACPI_STATUS(AE_NO_MEMORY);
357 if (rsdt_info->pointer) {
358 acpi_os_unmap_memory(rsdt_info->pointer,
359 (acpi_size) rsdt_info->pointer->length);
360 } 200 }
361 ACPI_FREE(rsdt_info);
362 201
363 if (header) { 202 mem_rover =
364 ACPI_FREE(header); 203 acpi_tb_scan_memory_for_rsdp(table_ptr, ACPI_HI_RSDP_WINDOW_SIZE);
365 } 204 acpi_os_unmap_memory(table_ptr, ACPI_HI_RSDP_WINDOW_SIZE);
366 if (table_info) {
367 ACPI_FREE(table_info);
368 }
369 return_ACPI_STATUS(status);
370}
371 205
372ACPI_EXPORT_SYMBOL(acpi_get_firmware_table) 206 if (mem_rover) {
373 207
374/* TBD: Move to a new file */ 208 /* Return the physical address */
375#if ACPI_MACHINE_WIDTH != 16
376/*******************************************************************************
377 *
378 * FUNCTION: acpi_find_root_pointer
379 *
380 * PARAMETERS: Flags - Logical/Physical addressing
381 * rsdp_address - Where to place the RSDP address
382 *
383 * RETURN: Status, Physical address of the RSDP
384 *
385 * DESCRIPTION: Find the RSDP
386 *
387 ******************************************************************************/
388acpi_status acpi_find_root_pointer(u32 flags, struct acpi_pointer *rsdp_address)
389{
390 struct acpi_table_desc table_info;
391 acpi_status status;
392
393 ACPI_FUNCTION_TRACE(acpi_find_root_pointer);
394 209
395 /* Get the RSDP */ 210 physical_address = (u32)
211 (ACPI_HI_RSDP_WINDOW_BASE +
212 ACPI_PTR_DIFF(mem_rover, table_ptr));
396 213
397 status = acpi_tb_find_rsdp(&table_info, flags); 214 *table_address = physical_address;
398 if (ACPI_FAILURE(status)) { 215 return_ACPI_STATUS(AE_OK);
399 ACPI_EXCEPTION((AE_INFO, status,
400 "RSDP structure not found - Flags=%X", flags));
401
402 return_ACPI_STATUS(AE_NO_ACPI_TABLES);
403 } 216 }
404 217
405 rsdp_address->pointer_type = ACPI_PHYSICAL_POINTER; 218 /* A valid RSDP was not found */
406 rsdp_address->pointer.physical = table_info.physical_address; 219
407 return_ACPI_STATUS(AE_OK); 220 ACPI_ERROR((AE_INFO, "A valid RSDP was not found"));
221 return_ACPI_STATUS(AE_NOT_FOUND);
408} 222}
409 223
410ACPI_EXPORT_SYMBOL(acpi_find_root_pointer) 224ACPI_EXPORT_SYMBOL(acpi_find_root_pointer)
@@ -440,7 +254,7 @@ static u8 *acpi_tb_scan_memory_for_rsdp(u8 * start_address, u32 length)
440 254
441 status = 255 status =
442 acpi_tb_validate_rsdp(ACPI_CAST_PTR 256 acpi_tb_validate_rsdp(ACPI_CAST_PTR
443 (struct rsdp_descriptor, mem_rover)); 257 (struct acpi_table_rsdp, mem_rover));
444 if (ACPI_SUCCESS(status)) { 258 if (ACPI_SUCCESS(status)) {
445 259
446 /* Sig and checksum valid, we have found a real RSDP */ 260 /* Sig and checksum valid, we have found a real RSDP */
@@ -462,188 +276,4 @@ static u8 *acpi_tb_scan_memory_for_rsdp(u8 * start_address, u32 length)
462 return_PTR(NULL); 276 return_PTR(NULL);
463} 277}
464 278
465/*******************************************************************************
466 *
467 * FUNCTION: acpi_tb_find_rsdp
468 *
469 * PARAMETERS: table_info - Where the table info is returned
470 * Flags - Current memory mode (logical vs.
471 * physical addressing)
472 *
473 * RETURN: Status, RSDP physical address
474 *
475 * DESCRIPTION: Search lower 1_mbyte of memory for the root system descriptor
476 * pointer structure. If it is found, set *RSDP to point to it.
477 *
478 * NOTE1: The RSDP must be either in the first 1_k of the Extended
479 * BIOS Data Area or between E0000 and FFFFF (From ACPI Spec.)
480 * Only a 32-bit physical address is necessary.
481 *
482 * NOTE2: This function is always available, regardless of the
483 * initialization state of the rest of ACPI.
484 *
485 ******************************************************************************/
486
487static acpi_status
488acpi_tb_find_rsdp(struct acpi_table_desc *table_info, u32 flags)
489{
490 u8 *table_ptr;
491 u8 *mem_rover;
492 u32 physical_address;
493 acpi_status status;
494
495 ACPI_FUNCTION_TRACE(tb_find_rsdp);
496
497 /*
498 * Scan supports either logical addressing or physical addressing
499 */
500 if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) {
501
502 /* 1a) Get the location of the Extended BIOS Data Area (EBDA) */
503
504 status = acpi_os_map_memory((acpi_physical_address)
505 ACPI_EBDA_PTR_LOCATION,
506 ACPI_EBDA_PTR_LENGTH,
507 (void *)&table_ptr);
508 if (ACPI_FAILURE(status)) {
509 ACPI_ERROR((AE_INFO,
510 "Could not map memory at %8.8X for length %X",
511 ACPI_EBDA_PTR_LOCATION,
512 ACPI_EBDA_PTR_LENGTH));
513
514 return_ACPI_STATUS(status);
515 }
516
517 ACPI_MOVE_16_TO_32(&physical_address, table_ptr);
518
519 /* Convert segment part to physical address */
520
521 physical_address <<= 4;
522 acpi_os_unmap_memory(table_ptr, ACPI_EBDA_PTR_LENGTH);
523
524 /* EBDA present? */
525
526 if (physical_address > 0x400) {
527 /*
528 * 1b) Search EBDA paragraphs (EBDA is required to be a
529 * minimum of 1_k length)
530 */
531 status = acpi_os_map_memory((acpi_physical_address)
532 physical_address,
533 ACPI_EBDA_WINDOW_SIZE,
534 (void *)&table_ptr);
535 if (ACPI_FAILURE(status)) {
536 ACPI_ERROR((AE_INFO,
537 "Could not map memory at %8.8X for length %X",
538 physical_address,
539 ACPI_EBDA_WINDOW_SIZE));
540
541 return_ACPI_STATUS(status);
542 }
543
544 mem_rover = acpi_tb_scan_memory_for_rsdp(table_ptr,
545 ACPI_EBDA_WINDOW_SIZE);
546 acpi_os_unmap_memory(table_ptr, ACPI_EBDA_WINDOW_SIZE);
547
548 if (mem_rover) {
549
550 /* Return the physical address */
551
552 physical_address +=
553 (u32) ACPI_PTR_DIFF(mem_rover, table_ptr);
554
555 table_info->physical_address =
556 (acpi_physical_address) physical_address;
557 return_ACPI_STATUS(AE_OK);
558 }
559 }
560
561 /*
562 * 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh
563 */
564 status = acpi_os_map_memory((acpi_physical_address)
565 ACPI_HI_RSDP_WINDOW_BASE,
566 ACPI_HI_RSDP_WINDOW_SIZE,
567 (void *)&table_ptr);
568
569 if (ACPI_FAILURE(status)) {
570 ACPI_ERROR((AE_INFO,
571 "Could not map memory at %8.8X for length %X",
572 ACPI_HI_RSDP_WINDOW_BASE,
573 ACPI_HI_RSDP_WINDOW_SIZE));
574
575 return_ACPI_STATUS(status);
576 }
577
578 mem_rover =
579 acpi_tb_scan_memory_for_rsdp(table_ptr,
580 ACPI_HI_RSDP_WINDOW_SIZE);
581 acpi_os_unmap_memory(table_ptr, ACPI_HI_RSDP_WINDOW_SIZE);
582
583 if (mem_rover) {
584
585 /* Return the physical address */
586
587 physical_address = (u32)
588 (ACPI_HI_RSDP_WINDOW_BASE +
589 ACPI_PTR_DIFF(mem_rover, table_ptr));
590
591 table_info->physical_address =
592 (acpi_physical_address) physical_address;
593 return_ACPI_STATUS(AE_OK);
594 }
595 }
596
597 /*
598 * Physical addressing
599 */
600 else {
601 /* 1a) Get the location of the EBDA */
602
603 ACPI_MOVE_16_TO_32(&physical_address, ACPI_EBDA_PTR_LOCATION);
604 physical_address <<= 4; /* Convert segment to physical address */
605
606 /* EBDA present? */
607
608 if (physical_address > 0x400) {
609 /*
610 * 1b) Search EBDA paragraphs (EBDA is required to be a minimum of
611 * 1_k length)
612 */
613 mem_rover =
614 acpi_tb_scan_memory_for_rsdp(ACPI_PHYSADDR_TO_PTR
615 (physical_address),
616 ACPI_EBDA_WINDOW_SIZE);
617 if (mem_rover) {
618
619 /* Return the physical address */
620
621 table_info->physical_address =
622 ACPI_TO_INTEGER(mem_rover);
623 return_ACPI_STATUS(AE_OK);
624 }
625 }
626
627 /* 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh */
628
629 mem_rover =
630 acpi_tb_scan_memory_for_rsdp(ACPI_PHYSADDR_TO_PTR
631 (ACPI_HI_RSDP_WINDOW_BASE),
632 ACPI_HI_RSDP_WINDOW_SIZE);
633 if (mem_rover) {
634
635 /* Found it, return the physical address */
636
637 table_info->physical_address =
638 ACPI_TO_INTEGER(mem_rover);
639 return_ACPI_STATUS(AE_OK);
640 }
641 }
642
643 /* A valid RSDP was not found */
644
645 ACPI_ERROR((AE_INFO, "No valid RSDP was found"));
646 return_ACPI_STATUS(AE_NOT_FOUND);
647}
648
649#endif 279#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-07 18:29:27 -0500