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44#include <acpi/acpi.h>
45#include "accommon.h"
46#include "acinterp.h"
47#include "acnamesp.h"
48#include "actables.h"
49#include "acdispat.h"
50#include "acevents.h"
51
52#define _COMPONENT ACPI_EXECUTER
53ACPI_MODULE_NAME("exconfig")
54
55
56static acpi_status
57acpi_ex_add_table(u32 table_index,
58 struct acpi_namespace_node *parent_node,
59 union acpi_operand_object **ddb_handle);
60
61static acpi_status
62acpi_ex_region_read(union acpi_operand_object *obj_desc,
63 u32 length, u8 *buffer);
64
65
66
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77
78
79
80static acpi_status
81acpi_ex_add_table(u32 table_index,
82 struct acpi_namespace_node *parent_node,
83 union acpi_operand_object **ddb_handle)
84{
85 union acpi_operand_object *obj_desc;
86 acpi_status status;
87 acpi_owner_id owner_id;
88
89 ACPI_FUNCTION_TRACE(ex_add_table);
90
91
92
93 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE);
94 if (!obj_desc) {
95 return_ACPI_STATUS(AE_NO_MEMORY);
96 }
97
98
99
100 obj_desc->common.flags |= AOPOBJ_DATA_VALID;
101 obj_desc->reference.class = ACPI_REFCLASS_TABLE;
102 *ddb_handle = obj_desc;
103
104
105
106 obj_desc->reference.value = table_index;
107
108
109
110 status = acpi_ns_load_table(table_index, parent_node);
111 if (ACPI_FAILURE(status)) {
112 acpi_ut_remove_reference(obj_desc);
113 *ddb_handle = NULL;
114 return_ACPI_STATUS(status);
115 }
116
117
118
119 acpi_ex_exit_interpreter();
120 acpi_ns_exec_module_code_list();
121 acpi_ex_enter_interpreter();
122
123
124
125 status = acpi_tb_get_owner_id(table_index, &owner_id);
126 if (ACPI_SUCCESS(status)) {
127 acpi_ev_update_gpes(owner_id);
128 }
129
130 return_ACPI_STATUS(AE_OK);
131}
132
133
134
135
136
137
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141
142
143
144
145
146acpi_status
147acpi_ex_load_table_op(struct acpi_walk_state *walk_state,
148 union acpi_operand_object **return_desc)
149{
150 acpi_status status;
151 union acpi_operand_object **operand = &walk_state->operands[0];
152 struct acpi_namespace_node *parent_node;
153 struct acpi_namespace_node *start_node;
154 struct acpi_namespace_node *parameter_node = NULL;
155 union acpi_operand_object *ddb_handle;
156 struct acpi_table_header *table;
157 u32 table_index;
158
159 ACPI_FUNCTION_TRACE(ex_load_table_op);
160
161
162
163 if ((operand[0]->string.length > ACPI_NAME_SIZE) ||
164 (operand[1]->string.length > ACPI_OEM_ID_SIZE) ||
165 (operand[2]->string.length > ACPI_OEM_TABLE_ID_SIZE)) {
166 return_ACPI_STATUS(AE_BAD_PARAMETER);
167 }
168
169
170
171 status = acpi_tb_find_table(operand[0]->string.pointer,
172 operand[1]->string.pointer,
173 operand[2]->string.pointer, &table_index);
174 if (ACPI_FAILURE(status)) {
175 if (status != AE_NOT_FOUND) {
176 return_ACPI_STATUS(status);
177 }
178
179
180
181 ddb_handle = acpi_ut_create_integer_object((u64) 0);
182 if (!ddb_handle) {
183 return_ACPI_STATUS(AE_NO_MEMORY);
184 }
185
186 *return_desc = ddb_handle;
187 return_ACPI_STATUS(AE_OK);
188 }
189
190
191
192 start_node = walk_state->scope_info->scope.node;
193 parent_node = acpi_gbl_root_node;
194
195
196
197 if (operand[3]->string.length > 0) {
198
199
200
201
202 status =
203 acpi_ns_get_node(start_node, operand[3]->string.pointer,
204 ACPI_NS_SEARCH_PARENT, &parent_node);
205 if (ACPI_FAILURE(status)) {
206 return_ACPI_STATUS(status);
207 }
208 }
209
210
211
212 if (operand[4]->string.length > 0) {
213 if ((operand[4]->string.pointer[0] != '\\') &&
214 (operand[4]->string.pointer[0] != '^')) {
215
216
217
218
219 start_node = parent_node;
220 }
221
222
223
224 status =
225 acpi_ns_get_node(start_node, operand[4]->string.pointer,
226 ACPI_NS_SEARCH_PARENT, ¶meter_node);
227 if (ACPI_FAILURE(status)) {
228 return_ACPI_STATUS(status);
229 }
230 }
231
232
233
234 status = acpi_ex_add_table(table_index, parent_node, &ddb_handle);
235 if (ACPI_FAILURE(status)) {
236 return_ACPI_STATUS(status);
237 }
238
239
240
241 if (parameter_node) {
242
243
244
245 status = acpi_ex_store(operand[5],
246 ACPI_CAST_PTR(union acpi_operand_object,
247 parameter_node),
248 walk_state);
249 if (ACPI_FAILURE(status)) {
250 (void)acpi_ex_unload_table(ddb_handle);
251
252 acpi_ut_remove_reference(ddb_handle);
253 return_ACPI_STATUS(status);
254 }
255 }
256
257 status = acpi_get_table_by_index(table_index, &table);
258 if (ACPI_SUCCESS(status)) {
259 ACPI_INFO((AE_INFO, "Dynamic OEM Table Load:"));
260 acpi_tb_print_table_header(0, table);
261 }
262
263
264
265 if (acpi_gbl_table_handler) {
266 (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_LOAD, table,
267 acpi_gbl_table_handler_context);
268 }
269
270 *return_desc = ddb_handle;
271 return_ACPI_STATUS(status);
272}
273
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288
289static acpi_status
290acpi_ex_region_read(union acpi_operand_object *obj_desc, u32 length, u8 *buffer)
291{
292 acpi_status status;
293 u64 value;
294 u32 region_offset = 0;
295 u32 i;
296
297
298
299 for (i = 0; i < length; i++) {
300 status = acpi_ev_address_space_dispatch(obj_desc, ACPI_READ,
301 region_offset, 8,
302 &value);
303 if (ACPI_FAILURE(status)) {
304 return status;
305 }
306
307 *buffer = (u8)value;
308 buffer++;
309 region_offset++;
310 }
311
312 return AE_OK;
313}
314
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336acpi_status
337acpi_ex_load_op(union acpi_operand_object *obj_desc,
338 union acpi_operand_object *target,
339 struct acpi_walk_state *walk_state)
340{
341 union acpi_operand_object *ddb_handle;
342 struct acpi_table_header *table;
343 struct acpi_table_desc table_desc;
344 u32 table_index;
345 acpi_status status;
346 u32 length;
347
348 ACPI_FUNCTION_TRACE(ex_load_op);
349
350 ACPI_MEMSET(&table_desc, 0, sizeof(struct acpi_table_desc));
351
352
353
354 switch (obj_desc->common.type) {
355 case ACPI_TYPE_REGION:
356
357 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
358 "Load table from Region %p\n", obj_desc));
359
360
361
362 if (obj_desc->region.space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) {
363 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
364 }
365
366
367
368
369
370 if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) {
371 status = acpi_ds_get_region_arguments(obj_desc);
372 if (ACPI_FAILURE(status)) {
373 return_ACPI_STATUS(status);
374 }
375 }
376
377
378
379 table = ACPI_ALLOCATE(sizeof(struct acpi_table_header));
380 if (!table) {
381 return_ACPI_STATUS(AE_NO_MEMORY);
382 }
383
384 status =
385 acpi_ex_region_read(obj_desc,
386 sizeof(struct acpi_table_header),
387 ACPI_CAST_PTR(u8, table));
388 length = table->length;
389 ACPI_FREE(table);
390
391 if (ACPI_FAILURE(status)) {
392 return_ACPI_STATUS(status);
393 }
394
395
396
397 if (length < sizeof(struct acpi_table_header)) {
398 return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH);
399 }
400
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417
418
419 table_desc.pointer = ACPI_ALLOCATE(length);
420 if (!table_desc.pointer) {
421 return_ACPI_STATUS(AE_NO_MEMORY);
422 }
423
424
425
426 status = acpi_ex_region_read(obj_desc, length,
427 ACPI_CAST_PTR(u8,
428 table_desc.pointer));
429 if (ACPI_FAILURE(status)) {
430 ACPI_FREE(table_desc.pointer);
431 return_ACPI_STATUS(status);
432 }
433
434 table_desc.address = obj_desc->region.address;
435 break;
436
437 case ACPI_TYPE_BUFFER:
438
439 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
440 "Load table from Buffer or Field %p\n",
441 obj_desc));
442
443
444
445 if (obj_desc->buffer.length < sizeof(struct acpi_table_header)) {
446 return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH);
447 }
448
449
450
451 table =
452 ACPI_CAST_PTR(struct acpi_table_header,
453 obj_desc->buffer.pointer);
454 length = table->length;
455
456
457
458 if (length > obj_desc->buffer.length) {
459 return_ACPI_STATUS(AE_AML_BUFFER_LIMIT);
460 }
461 if (length < sizeof(struct acpi_table_header)) {
462 return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH);
463 }
464
465
466
467
468
469 table_desc.pointer = ACPI_ALLOCATE(length);
470 if (!table_desc.pointer) {
471 return_ACPI_STATUS(AE_NO_MEMORY);
472 }
473
474 ACPI_MEMCPY(table_desc.pointer, table, length);
475 table_desc.address = ACPI_TO_INTEGER(table_desc.pointer);
476 break;
477
478 default:
479 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
480 }
481
482
483
484 status = acpi_tb_verify_checksum(table_desc.pointer, length);
485 if (ACPI_FAILURE(status)) {
486 ACPI_FREE(table_desc.pointer);
487 return_ACPI_STATUS(status);
488 }
489
490
491
492 table_desc.length = length;
493 table_desc.flags = ACPI_TABLE_ORIGIN_ALLOCATED;
494
495
496
497 status = acpi_tb_add_table(&table_desc, &table_index);
498 if (ACPI_FAILURE(status)) {
499
500
501
502 acpi_tb_delete_table(&table_desc);
503 return_ACPI_STATUS(status);
504 }
505
506
507
508
509
510
511
512
513 status =
514 acpi_ex_add_table(table_index, acpi_gbl_root_node, &ddb_handle);
515 if (ACPI_FAILURE(status)) {
516
517
518
519 return_ACPI_STATUS(status);
520 }
521
522
523
524 status = acpi_ex_store(ddb_handle, target, walk_state);
525 if (ACPI_FAILURE(status)) {
526 (void)acpi_ex_unload_table(ddb_handle);
527
528
529
530 acpi_ut_remove_reference(ddb_handle);
531 return_ACPI_STATUS(status);
532 }
533
534 ACPI_INFO((AE_INFO, "Dynamic OEM Table Load:"));
535 acpi_tb_print_table_header(0, table_desc.pointer);
536
537
538
539 acpi_ut_remove_reference(ddb_handle);
540
541
542
543 if (acpi_gbl_table_handler) {
544 (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_LOAD,
545 table_desc.pointer,
546 acpi_gbl_table_handler_context);
547 }
548
549 return_ACPI_STATUS(status);
550}
551
552
553
554
555
556
557
558
559
560
561
562
563
564acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle)
565{
566 acpi_status status = AE_OK;
567 union acpi_operand_object *table_desc = ddb_handle;
568 u32 table_index;
569 struct acpi_table_header *table;
570
571 ACPI_FUNCTION_TRACE(ex_unload_table);
572
573
574
575
576
577
578
579
580
581
582
583 if ((!ddb_handle) ||
584 (ACPI_GET_DESCRIPTOR_TYPE(ddb_handle) != ACPI_DESC_TYPE_OPERAND) ||
585 (ddb_handle->common.type != ACPI_TYPE_LOCAL_REFERENCE) ||
586 (!(ddb_handle->common.flags & AOPOBJ_DATA_VALID))) {
587 return_ACPI_STATUS(AE_BAD_PARAMETER);
588 }
589
590
591
592 table_index = table_desc->reference.value;
593
594
595
596 if (!acpi_tb_is_table_loaded(table_index)) {
597 return_ACPI_STATUS(AE_NOT_EXIST);
598 }
599
600
601
602 if (acpi_gbl_table_handler) {
603 status = acpi_get_table_by_index(table_index, &table);
604 if (ACPI_SUCCESS(status)) {
605 (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_UNLOAD,
606 table,
607 acpi_gbl_table_handler_context);
608 }
609 }
610
611
612
613 status = acpi_tb_delete_namespace_by_owner(table_index);
614 if (ACPI_FAILURE(status)) {
615 return_ACPI_STATUS(status);
616 }
617
618 (void)acpi_tb_release_owner_id(table_index);
619 acpi_tb_set_table_loaded_flag(table_index, FALSE);
620
621
622
623
624
625 ddb_handle->common.flags &= ~AOPOBJ_DATA_VALID;
626 return_ACPI_STATUS(AE_OK);
627}
628