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 acpi_os_invalidate_address(object->region.space_id,
221 object->region.address,
222 (acpi_size) object->region.length);
223
224 second_desc = acpi_ns_get_secondary_object(object);
225 if (second_desc) {
226
227
228
229
230
231 handler_desc = object->region.handler;
232 if (handler_desc) {
233 next_desc =
234 handler_desc->address_space.region_list;
235 last_obj_ptr =
236 &handler_desc->address_space.region_list;
237
238
239
240 while (next_desc) {
241 if (next_desc == object) {
242 *last_obj_ptr =
243 next_desc->region.next;
244 break;
245 }
246
247
248
249 last_obj_ptr = &next_desc->region.next;
250 next_desc = next_desc->region.next;
251 }
252
253 if (handler_desc->address_space.handler_flags &
254 ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) {
255
256
257
258 if (handler_desc->address_space.setup) {
259 (void)handler_desc->
260 address_space.setup(object,
261 ACPI_REGION_DEACTIVATE,
262 handler_desc->
263 address_space.
264 context,
265 &second_desc->
266 extra.
267 region_context);
268 }
269 }
270
271 acpi_ut_remove_reference(handler_desc);
272 }
273
274
275
276 acpi_ut_delete_object_desc(second_desc);
277 }
278 break;
279
280 case ACPI_TYPE_BUFFER_FIELD:
281
282 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
283 "***** Buffer Field %p\n", object));
284
285 second_desc = acpi_ns_get_secondary_object(object);
286 if (second_desc) {
287 acpi_ut_delete_object_desc(second_desc);
288 }
289 break;
290
291 case ACPI_TYPE_LOCAL_BANK_FIELD:
292
293 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
294 "***** Bank Field %p\n", object));
295
296 second_desc = acpi_ns_get_secondary_object(object);
297 if (second_desc) {
298 acpi_ut_delete_object_desc(second_desc);
299 }
300 break;
301
302 default:
303 break;
304 }
305
306
307
308 if (obj_pointer) {
309 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
310 "Deleting Object Subptr %p\n", obj_pointer));
311 ACPI_FREE(obj_pointer);
312 }
313
314
315
316 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "Deleting Object %p [%s]\n",
317 object, acpi_ut_get_object_type_name(object)));
318
319 acpi_ut_delete_object_desc(object);
320 return_VOID;
321}
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336void acpi_ut_delete_internal_object_list(union acpi_operand_object **obj_list)
337{
338 union acpi_operand_object **internal_obj;
339
340 ACPI_FUNCTION_TRACE(ut_delete_internal_object_list);
341
342
343
344 for (internal_obj = obj_list; *internal_obj; internal_obj++) {
345 acpi_ut_remove_reference(*internal_obj);
346 }
347
348
349
350 ACPI_FREE(obj_list);
351 return_VOID;
352}
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367static void
368acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action)
369{
370 u16 count;
371 u16 new_count;
372
373 ACPI_FUNCTION_NAME(ut_update_ref_count);
374
375 if (!object) {
376 return;
377 }
378
379 count = object->common.reference_count;
380 new_count = count;
381
382
383
384
385 switch (action) {
386 case REF_INCREMENT:
387
388 new_count++;
389 object->common.reference_count = new_count;
390
391 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
392 "Obj %p Refs=%X, [Incremented]\n",
393 object, new_count));
394 break;
395
396 case REF_DECREMENT:
397
398 if (count < 1) {
399 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
400 "Obj %p Refs=%X, can't decrement! (Set to 0)\n",
401 object, new_count));
402
403 new_count = 0;
404 } else {
405 new_count--;
406
407 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
408 "Obj %p Refs=%X, [Decremented]\n",
409 object, new_count));
410 }
411
412 if (object->common.type == ACPI_TYPE_METHOD) {
413 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
414 "Method Obj %p Refs=%X, [Decremented]\n",
415 object, new_count));
416 }
417
418 object->common.reference_count = new_count;
419 if (new_count == 0) {
420 acpi_ut_delete_internal_obj(object);
421 }
422 break;
423
424 case REF_FORCE_DELETE:
425
426 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
427 "Obj %p Refs=%X, Force delete! (Set to 0)\n",
428 object, count));
429
430 new_count = 0;
431 object->common.reference_count = new_count;
432 acpi_ut_delete_internal_obj(object);
433 break;
434
435 default:
436
437 ACPI_ERROR((AE_INFO, "Unknown action (%X)", action));
438 break;
439 }
440
441
442
443
444
445 if (count > ACPI_MAX_REFERENCE_COUNT) {
446 ACPI_WARNING((AE_INFO,
447 "Large Reference Count (%X) in object %p", count,
448 object));
449 }
450}
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474acpi_status
475acpi_ut_update_object_reference(union acpi_operand_object *object, u16 action)
476{
477 acpi_status status = AE_OK;
478 union acpi_generic_state *state_list = NULL;
479 union acpi_operand_object *next_object = NULL;
480 union acpi_generic_state *state;
481 u32 i;
482
483 ACPI_FUNCTION_TRACE_PTR(ut_update_object_reference, object);
484
485 while (object) {
486
487
488
489 if (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED) {
490 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
491 "Object %p is NS handle\n", object));
492 return_ACPI_STATUS(AE_OK);
493 }
494
495
496
497
498
499 switch (object->common.type) {
500 case ACPI_TYPE_DEVICE:
501 case ACPI_TYPE_PROCESSOR:
502 case ACPI_TYPE_POWER:
503 case ACPI_TYPE_THERMAL:
504
505
506
507 acpi_ut_update_ref_count(object->common_notify.
508 system_notify, action);
509 acpi_ut_update_ref_count(object->common_notify.
510 device_notify, action);
511 break;
512
513 case ACPI_TYPE_PACKAGE:
514
515
516
517
518 for (i = 0; i < object->package.count; i++) {
519
520
521
522
523
524 status =
525 acpi_ut_create_update_state_and_push
526 (object->package.elements[i], action,
527 &state_list);
528 if (ACPI_FAILURE(status)) {
529 goto error_exit;
530 }
531 }
532 break;
533
534 case ACPI_TYPE_BUFFER_FIELD:
535
536 next_object = object->buffer_field.buffer_obj;
537 break;
538
539 case ACPI_TYPE_LOCAL_REGION_FIELD:
540
541 next_object = object->field.region_obj;
542 break;
543
544 case ACPI_TYPE_LOCAL_BANK_FIELD:
545
546 next_object = object->bank_field.bank_obj;
547 status =
548 acpi_ut_create_update_state_and_push(object->
549 bank_field.
550 region_obj,
551 action,
552 &state_list);
553 if (ACPI_FAILURE(status)) {
554 goto error_exit;
555 }
556 break;
557
558 case ACPI_TYPE_LOCAL_INDEX_FIELD:
559
560 next_object = object->index_field.index_obj;
561 status =
562 acpi_ut_create_update_state_and_push(object->
563 index_field.
564 data_obj,
565 action,
566 &state_list);
567 if (ACPI_FAILURE(status)) {
568 goto error_exit;
569 }
570 break;
571
572 case ACPI_TYPE_LOCAL_REFERENCE:
573
574
575
576
577
578 if ((object->reference.class == ACPI_REFCLASS_INDEX) ||
579 (object->reference.class == ACPI_REFCLASS_NAME)) {
580 next_object = object->reference.object;
581 }
582 break;
583
584 case ACPI_TYPE_REGION:
585 default:
586 break;
587 }
588
589
590
591
592
593
594 acpi_ut_update_ref_count(object, action);
595 object = NULL;
596
597
598
599 if (next_object) {
600 object = next_object;
601 next_object = NULL;
602 } else if (state_list) {
603 state = acpi_ut_pop_generic_state(&state_list);
604 object = state->update.object;
605 acpi_ut_delete_generic_state(state);
606 }
607 }
608
609 return_ACPI_STATUS(AE_OK);
610
611 error_exit:
612
613 ACPI_EXCEPTION((AE_INFO, status,
614 "Could not update object reference count"));
615
616
617
618 while (state_list) {
619 state = acpi_ut_pop_generic_state(&state_list);
620 acpi_ut_delete_generic_state(state);
621 }
622
623 return_ACPI_STATUS(status);
624}
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639void acpi_ut_add_reference(union acpi_operand_object *object)
640{
641
642 ACPI_FUNCTION_TRACE_PTR(ut_add_reference, object);
643
644
645
646 if (!acpi_ut_valid_internal_object(object)) {
647 return_VOID;
648 }
649
650 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
651 "Obj %p Current Refs=%X [To Be Incremented]\n",
652 object, object->common.reference_count));
653
654
655
656 (void)acpi_ut_update_object_reference(object, REF_INCREMENT);
657 return_VOID;
658}
659
660
661
662
663
664
665
666
667
668
669
670
671
672void acpi_ut_remove_reference(union acpi_operand_object *object)
673{
674
675 ACPI_FUNCTION_TRACE_PTR(ut_remove_reference, object);
676
677
678
679
680
681
682 if (!object ||
683 (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED)) {
684 return_VOID;
685 }
686
687
688
689 if (!acpi_ut_valid_internal_object(object)) {
690 return_VOID;
691 }
692
693 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
694 "Obj %p Current Refs=%X [To Be Decremented]\n",
695 object, object->common.reference_count));
696
697
698
699
700
701
702 (void)acpi_ut_update_object_reference(object, REF_DECREMENT);
703 return_VOID;
704}
705