1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44#include <acpi/acpi.h>
45#include "accommon.h"
46#include "acinterp.h"
47#include "acnamesp.h"
48#include "acevents.h"
49
50#define _COMPONENT ACPI_UTILITIES
51ACPI_MODULE_NAME("utdelete")
52
53
54static void acpi_ut_delete_internal_obj(union acpi_operand_object *object);
55
56static void
57acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action);
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
73{
74 void *obj_pointer = NULL;
75 union acpi_operand_object *handler_desc;
76 union acpi_operand_object *second_desc;
77 union acpi_operand_object *next_desc;
78 union acpi_operand_object **last_obj_ptr;
79
80 ACPI_FUNCTION_TRACE_PTR(ut_delete_internal_obj, object);
81
82 if (!object) {
83 return_VOID;
84 }
85
86
87
88
89
90 switch (object->common.type) {
91 case ACPI_TYPE_STRING:
92
93 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
94 "**** String %p, ptr %p\n", object,
95 object->string.pointer));
96
97
98
99 if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
100
101
102
103 obj_pointer = object->string.pointer;
104 }
105 break;
106
107 case ACPI_TYPE_BUFFER:
108
109 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
110 "**** Buffer %p, ptr %p\n", object,
111 object->buffer.pointer));
112
113
114
115 if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
116
117
118
119 obj_pointer = object->buffer.pointer;
120 }
121 break;
122
123 case ACPI_TYPE_PACKAGE:
124
125 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
126 " **** Package of count %X\n",
127 object->package.count));
128
129
130
131
132
133
134
135
136 obj_pointer = object->package.elements;
137 break;
138
139
140
141
142
143 case ACPI_TYPE_DEVICE:
144
145 if (object->device.gpe_block) {
146 (void)acpi_ev_delete_gpe_block(object->device.
147 gpe_block);
148 }
149
150
151
152 case ACPI_TYPE_PROCESSOR:
153 case ACPI_TYPE_THERMAL:
154
155
156
157 handler_desc = object->common_notify.handler;
158 while (handler_desc) {
159 next_desc = handler_desc->address_space.next;
160 acpi_ut_remove_reference(handler_desc);
161 handler_desc = next_desc;
162 }
163 break;
164
165 case ACPI_TYPE_MUTEX:
166
167 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
168 "***** Mutex %p, OS Mutex %p\n",
169 object, object->mutex.os_mutex));
170
171 if (object == acpi_gbl_global_lock_mutex) {
172
173
174
175 (void)
176 acpi_os_delete_semaphore
177 (acpi_gbl_global_lock_semaphore);
178 acpi_gbl_global_lock_semaphore = NULL;
179
180 acpi_os_delete_mutex(object->mutex.os_mutex);
181 acpi_gbl_global_lock_mutex = NULL;
182 } else {
183 acpi_ex_unlink_mutex(object);
184 acpi_os_delete_mutex(object->mutex.os_mutex);
185 }
186 break;
187
188 case ACPI_TYPE_EVENT:
189
190 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
191 "***** Event %p, OS Semaphore %p\n",
192 object, object->event.os_semaphore));
193
194 (void)acpi_os_delete_semaphore(object->event.os_semaphore);
195 object->event.os_semaphore = NULL;
196 break;
197
198 case ACPI_TYPE_METHOD:
199
200 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
201 "***** Method %p\n", object));
202
203
204
205 if (object->method.mutex) {
206 acpi_os_delete_mutex(object->method.mutex->mutex.
207 os_mutex);
208 acpi_ut_delete_object_desc(object->method.mutex);
209 object->method.mutex = NULL;
210 }
211 break;
212
213 case ACPI_TYPE_REGION:
214
215 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
216 "***** Region %p\n", object));
217
218
219
220
221
222 if (!(object->region.node->flags & ANOBJ_TEMPORARY)) {
223 acpi_ut_remove_address_range(object->region.space_id,
224 object->region.node);
225 }
226
227 second_desc = acpi_ns_get_secondary_object(object);
228 if (second_desc) {
229
230
231
232
233
234 handler_desc = object->region.handler;
235 if (handler_desc) {
236 next_desc =
237 handler_desc->address_space.region_list;
238 last_obj_ptr =
239 &handler_desc->address_space.region_list;
240
241
242
243 while (next_desc) {
244 if (next_desc == object) {
245 *last_obj_ptr =
246 next_desc->region.next;
247 break;
248 }
249
250
251
252 last_obj_ptr = &next_desc->region.next;
253 next_desc = next_desc->region.next;
254 }
255
256 if (handler_desc->address_space.handler_flags &
257 ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) {
258
259
260
261 if (handler_desc->address_space.setup) {
262 (void)handler_desc->
263 address_space.setup(object,
264 ACPI_REGION_DEACTIVATE,
265 handler_desc->
266 address_space.
267 context,
268 &second_desc->
269 extra.
270 region_context);
271 }
272 }
273
274 acpi_ut_remove_reference(handler_desc);
275 }
276
277
278
279 acpi_ut_delete_object_desc(second_desc);
280 }
281 break;
282
283 case ACPI_TYPE_BUFFER_FIELD:
284
285 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
286 "***** Buffer Field %p\n", object));
287
288 second_desc = acpi_ns_get_secondary_object(object);
289 if (second_desc) {
290 acpi_ut_delete_object_desc(second_desc);
291 }
292 break;
293
294 case ACPI_TYPE_LOCAL_BANK_FIELD:
295
296 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
297 "***** Bank Field %p\n", object));
298
299 second_desc = acpi_ns_get_secondary_object(object);
300 if (second_desc) {
301 acpi_ut_delete_object_desc(second_desc);
302 }
303 break;
304
305 default:
306
307 break;
308 }
309
310
311
312 if (obj_pointer) {
313 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
314 "Deleting Object Subptr %p\n", obj_pointer));
315 ACPI_FREE(obj_pointer);
316 }
317
318
319
320 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "Deleting Object %p [%s]\n",
321 object, acpi_ut_get_object_type_name(object)));
322
323 acpi_ut_delete_object_desc(object);
324 return_VOID;
325}
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340void acpi_ut_delete_internal_object_list(union acpi_operand_object **obj_list)
341{
342 union acpi_operand_object **internal_obj;
343
344 ACPI_FUNCTION_ENTRY();
345
346
347
348 for (internal_obj = obj_list; *internal_obj; internal_obj++) {
349 acpi_ut_remove_reference(*internal_obj);
350 }
351
352
353
354 ACPI_FREE(obj_list);
355 return;
356}
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371static void
372acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action)
373{
374 u16 original_count;
375 u16 new_count = 0;
376 acpi_cpu_flags lock_flags;
377
378 ACPI_FUNCTION_NAME(ut_update_ref_count);
379
380 if (!object) {
381 return;
382 }
383
384
385
386
387
388 lock_flags = acpi_os_acquire_lock(acpi_gbl_reference_count_lock);
389 original_count = object->common.reference_count;
390
391
392
393 switch (action) {
394 case REF_INCREMENT:
395
396 new_count = original_count + 1;
397 object->common.reference_count = new_count;
398 acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
399
400
401
402 if (!original_count) {
403 ACPI_WARNING((AE_INFO,
404 "Obj %p, Reference Count was zero before increment\n",
405 object));
406 }
407
408 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
409 "Obj %p Type %.2X Refs %.2X [Incremented]\n",
410 object, object->common.type, new_count));
411 break;
412
413 case REF_DECREMENT:
414
415
416
417 if (original_count) {
418 new_count = original_count - 1;
419 object->common.reference_count = new_count;
420 }
421
422 acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
423
424 if (!original_count) {
425 ACPI_WARNING((AE_INFO,
426 "Obj %p, Reference Count is already zero, cannot decrement\n",
427 object));
428 }
429
430 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
431 "Obj %p Type %.2X Refs %.2X [Decremented]\n",
432 object, object->common.type, new_count));
433
434
435
436 if (new_count == 0) {
437 acpi_ut_delete_internal_obj(object);
438 }
439 break;
440
441 default:
442
443 acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
444 ACPI_ERROR((AE_INFO, "Unknown Reference Count action (0x%X)",
445 action));
446 return;
447 }
448
449
450
451
452
453 if (new_count > ACPI_MAX_REFERENCE_COUNT) {
454 ACPI_WARNING((AE_INFO,
455 "Large Reference Count (0x%X) in object %p, Type=0x%.2X",
456 new_count, object, object->common.type));
457 }
458}
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481acpi_status
482acpi_ut_update_object_reference(union acpi_operand_object *object, u16 action)
483{
484 acpi_status status = AE_OK;
485 union acpi_generic_state *state_list = NULL;
486 union acpi_operand_object *next_object = NULL;
487 union acpi_operand_object *prev_object;
488 union acpi_generic_state *state;
489 u32 i;
490
491 ACPI_FUNCTION_NAME(ut_update_object_reference);
492
493 while (object) {
494
495
496
497 if (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED) {
498 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
499 "Object %p is NS handle\n", object));
500 return (AE_OK);
501 }
502
503
504
505
506
507 switch (object->common.type) {
508 case ACPI_TYPE_DEVICE:
509 case ACPI_TYPE_PROCESSOR:
510 case ACPI_TYPE_POWER:
511 case ACPI_TYPE_THERMAL:
512
513
514
515
516 for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
517 prev_object =
518 object->common_notify.notify_list[i];
519 while (prev_object) {
520 next_object =
521 prev_object->notify.next[i];
522 acpi_ut_update_ref_count(prev_object,
523 action);
524 prev_object = next_object;
525 }
526 }
527 break;
528
529 case ACPI_TYPE_PACKAGE:
530
531
532
533
534 for (i = 0; i < object->package.count; i++) {
535
536
537
538
539 next_object = object->package.elements[i];
540 if (!next_object) {
541 continue;
542 }
543
544 switch (next_object->common.type) {
545 case ACPI_TYPE_INTEGER:
546 case ACPI_TYPE_STRING:
547 case ACPI_TYPE_BUFFER:
548
549
550
551
552
553 acpi_ut_update_ref_count(next_object,
554 action);
555 break;
556
557 default:
558
559
560
561
562 status =
563 acpi_ut_create_update_state_and_push
564 (next_object, action, &state_list);
565 if (ACPI_FAILURE(status)) {
566 goto error_exit;
567 }
568 break;
569 }
570 }
571 next_object = NULL;
572 break;
573
574 case ACPI_TYPE_BUFFER_FIELD:
575
576 next_object = object->buffer_field.buffer_obj;
577 break;
578
579 case ACPI_TYPE_LOCAL_REGION_FIELD:
580
581 next_object = object->field.region_obj;
582 break;
583
584 case ACPI_TYPE_LOCAL_BANK_FIELD:
585
586 next_object = object->bank_field.bank_obj;
587 status =
588 acpi_ut_create_update_state_and_push(object->
589 bank_field.
590 region_obj,
591 action,
592 &state_list);
593 if (ACPI_FAILURE(status)) {
594 goto error_exit;
595 }
596 break;
597
598 case ACPI_TYPE_LOCAL_INDEX_FIELD:
599
600 next_object = object->index_field.index_obj;
601 status =
602 acpi_ut_create_update_state_and_push(object->
603 index_field.
604 data_obj,
605 action,
606 &state_list);
607 if (ACPI_FAILURE(status)) {
608 goto error_exit;
609 }
610 break;
611
612 case ACPI_TYPE_LOCAL_REFERENCE:
613
614
615
616
617
618 if ((object->reference.class == ACPI_REFCLASS_INDEX) ||
619 (object->reference.class == ACPI_REFCLASS_NAME)) {
620 next_object = object->reference.object;
621 }
622 break;
623
624 case ACPI_TYPE_REGION:
625 default:
626
627 break;
628 }
629
630
631
632
633
634
635 acpi_ut_update_ref_count(object, action);
636 object = NULL;
637
638
639
640 if (next_object) {
641 object = next_object;
642 next_object = NULL;
643 } else if (state_list) {
644 state = acpi_ut_pop_generic_state(&state_list);
645 object = state->update.object;
646 acpi_ut_delete_generic_state(state);
647 }
648 }
649
650 return (AE_OK);
651
652 error_exit:
653
654 ACPI_EXCEPTION((AE_INFO, status,
655 "Could not update object reference count"));
656
657
658
659 while (state_list) {
660 state = acpi_ut_pop_generic_state(&state_list);
661 acpi_ut_delete_generic_state(state);
662 }
663
664 return (status);
665}
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680void acpi_ut_add_reference(union acpi_operand_object *object)
681{
682
683 ACPI_FUNCTION_NAME(ut_add_reference);
684
685
686
687 if (!acpi_ut_valid_internal_object(object)) {
688 return;
689 }
690
691 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
692 "Obj %p Current Refs=%X [To Be Incremented]\n",
693 object, object->common.reference_count));
694
695
696
697 (void)acpi_ut_update_object_reference(object, REF_INCREMENT);
698 return;
699}
700
701
702
703
704
705
706
707
708
709
710
711
712
713void acpi_ut_remove_reference(union acpi_operand_object *object)
714{
715
716 ACPI_FUNCTION_NAME(ut_remove_reference);
717
718
719
720
721
722 if (!object ||
723 (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED)) {
724 return;
725 }
726
727
728
729 if (!acpi_ut_valid_internal_object(object)) {
730 return;
731 }
732
733 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
734 "Obj %p Current Refs=%X [To Be Decremented]\n",
735 object, object->common.reference_count));
736
737
738
739
740
741
742 (void)acpi_ut_update_object_reference(object, REF_DECREMENT);
743 return;
744}
745