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 "acevents.h"
47#include "acnamesp.h"
48#include "acinterp.h"
49
50#define _COMPONENT ACPI_EVENTS
51ACPI_MODULE_NAME("evregion")
52
53extern u8 acpi_gbl_default_address_spaces[];
54
55
56
57static void
58acpi_ev_orphan_ec_reg_method(struct acpi_namespace_node *ec_device_node);
59
60static acpi_status
61acpi_ev_reg_run(acpi_handle obj_handle,
62 u32 level, void *context, void **return_value);
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77acpi_status acpi_ev_initialize_op_regions(void)
78{
79 acpi_status status;
80 u32 i;
81
82 ACPI_FUNCTION_TRACE(ev_initialize_op_regions);
83
84 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
85 if (ACPI_FAILURE(status)) {
86 return_ACPI_STATUS(status);
87 }
88
89
90
91 for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) {
92
93
94
95
96
97 if (acpi_ev_has_default_handler(acpi_gbl_root_node,
98 acpi_gbl_default_address_spaces
99 [i])) {
100 acpi_ev_execute_reg_methods(acpi_gbl_root_node,
101 acpi_gbl_default_address_spaces
102 [i], ACPI_REG_CONNECT);
103 }
104 }
105
106 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
107 return_ACPI_STATUS(status);
108}
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135acpi_status
136acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
137 union acpi_operand_object *field_obj,
138 u32 function,
139 u32 region_offset, u32 bit_width, u64 *value)
140{
141 acpi_status status;
142 acpi_adr_space_handler handler;
143 acpi_adr_space_setup region_setup;
144 union acpi_operand_object *handler_desc;
145 union acpi_operand_object *region_obj2;
146 void *region_context = NULL;
147 struct acpi_connection_info *context;
148 acpi_physical_address address;
149
150 ACPI_FUNCTION_TRACE(ev_address_space_dispatch);
151
152 region_obj2 = acpi_ns_get_secondary_object(region_obj);
153 if (!region_obj2) {
154 return_ACPI_STATUS(AE_NOT_EXIST);
155 }
156
157
158
159 handler_desc = region_obj->region.handler;
160 if (!handler_desc) {
161 ACPI_ERROR((AE_INFO,
162 "No handler for Region [%4.4s] (%p) [%s]",
163 acpi_ut_get_node_name(region_obj->region.node),
164 region_obj,
165 acpi_ut_get_region_name(region_obj->region.
166 space_id)));
167
168 return_ACPI_STATUS(AE_NOT_EXIST);
169 }
170
171 context = handler_desc->address_space.context;
172
173
174
175
176
177 if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
178
179
180
181 region_setup = handler_desc->address_space.setup;
182 if (!region_setup) {
183
184
185
186 ACPI_ERROR((AE_INFO,
187 "No init routine for region(%p) [%s]",
188 region_obj,
189 acpi_ut_get_region_name(region_obj->region.
190 space_id)));
191 return_ACPI_STATUS(AE_NOT_EXIST);
192 }
193
194
195
196
197
198
199 acpi_ex_exit_interpreter();
200
201 status = region_setup(region_obj, ACPI_REGION_ACTIVATE,
202 context, ®ion_context);
203
204
205
206 acpi_ex_enter_interpreter();
207
208
209
210 if (ACPI_FAILURE(status)) {
211 ACPI_EXCEPTION((AE_INFO, status,
212 "During region initialization: [%s]",
213 acpi_ut_get_region_name(region_obj->
214 region.
215 space_id)));
216 return_ACPI_STATUS(status);
217 }
218
219
220
221 if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
222 region_obj->region.flags |= AOPOBJ_SETUP_COMPLETE;
223
224
225
226
227
228 if (!(region_obj2->extra.region_context)) {
229 region_obj2->extra.region_context =
230 region_context;
231 }
232 }
233 }
234
235
236
237 handler = handler_desc->address_space.handler;
238 address = (region_obj->region.address + region_offset);
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254 if ((region_obj->region.space_id == ACPI_ADR_SPACE_GSBUS) &&
255 context && field_obj) {
256
257
258
259 context->connection = field_obj->field.resource_buffer;
260 context->length = field_obj->field.resource_length;
261 context->access_length = field_obj->field.access_length;
262 }
263 if ((region_obj->region.space_id == ACPI_ADR_SPACE_GPIO) &&
264 context && field_obj) {
265
266
267
268 context->connection = field_obj->field.resource_buffer;
269 context->length = field_obj->field.resource_length;
270 context->access_length = field_obj->field.access_length;
271 address = field_obj->field.pin_number_index;
272 bit_width = field_obj->field.bit_length;
273 }
274
275 ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
276 "Handler %p (@%p) Address %8.8X%8.8X [%s]\n",
277 ®ion_obj->region.handler->address_space, handler,
278 ACPI_FORMAT_UINT64(address),
279 acpi_ut_get_region_name(region_obj->region.
280 space_id)));
281
282 if (!(handler_desc->address_space.handler_flags &
283 ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
284
285
286
287
288
289 acpi_ex_exit_interpreter();
290 }
291
292
293
294 status = handler(function, address, bit_width, value, context,
295 region_obj2->extra.region_context);
296
297 if (ACPI_FAILURE(status)) {
298 ACPI_EXCEPTION((AE_INFO, status, "Returned by Handler for [%s]",
299 acpi_ut_get_region_name(region_obj->region.
300 space_id)));
301 }
302
303 if (!(handler_desc->address_space.handler_flags &
304 ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
305
306
307
308
309 acpi_ex_enter_interpreter();
310 }
311
312 return_ACPI_STATUS(status);
313}
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329void
330acpi_ev_detach_region(union acpi_operand_object *region_obj,
331 u8 acpi_ns_is_locked)
332{
333 union acpi_operand_object *handler_obj;
334 union acpi_operand_object *obj_desc;
335 union acpi_operand_object *start_desc;
336 union acpi_operand_object **last_obj_ptr;
337 acpi_adr_space_setup region_setup;
338 void **region_context;
339 union acpi_operand_object *region_obj2;
340 acpi_status status;
341
342 ACPI_FUNCTION_TRACE(ev_detach_region);
343
344 region_obj2 = acpi_ns_get_secondary_object(region_obj);
345 if (!region_obj2) {
346 return_VOID;
347 }
348 region_context = ®ion_obj2->extra.region_context;
349
350
351
352 handler_obj = region_obj->region.handler;
353 if (!handler_obj) {
354
355
356
357 return_VOID;
358 }
359
360
361
362 obj_desc = handler_obj->address_space.region_list;
363 start_desc = obj_desc;
364 last_obj_ptr = &handler_obj->address_space.region_list;
365
366 while (obj_desc) {
367
368
369
370 if (obj_desc == region_obj) {
371 ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
372 "Removing Region %p from address handler %p\n",
373 region_obj, handler_obj));
374
375
376
377 *last_obj_ptr = obj_desc->region.next;
378 obj_desc->region.next = NULL;
379
380 if (acpi_ns_is_locked) {
381 status =
382 acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
383 if (ACPI_FAILURE(status)) {
384 return_VOID;
385 }
386 }
387
388
389
390 status =
391 acpi_ev_execute_reg_method(region_obj,
392 ACPI_REG_DISCONNECT);
393 if (ACPI_FAILURE(status)) {
394 ACPI_EXCEPTION((AE_INFO, status,
395 "from region _REG, [%s]",
396 acpi_ut_get_region_name
397 (region_obj->region.space_id)));
398 }
399
400 if (acpi_ns_is_locked) {
401 status =
402 acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
403 if (ACPI_FAILURE(status)) {
404 return_VOID;
405 }
406 }
407
408
409
410
411
412 if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) {
413 region_setup = handler_obj->address_space.setup;
414 status =
415 region_setup(region_obj,
416 ACPI_REGION_DEACTIVATE,
417 handler_obj->address_space.
418 context, region_context);
419
420
421
422
423
424 if (region_context) {
425 *region_context = NULL;
426 }
427
428
429
430 if (ACPI_FAILURE(status)) {
431 ACPI_EXCEPTION((AE_INFO, status,
432 "from region handler - deactivate, [%s]",
433 acpi_ut_get_region_name
434 (region_obj->region.
435 space_id)));
436 }
437
438 region_obj->region.flags &=
439 ~(AOPOBJ_SETUP_COMPLETE);
440 }
441
442
443
444
445
446
447
448
449
450
451 region_obj->region.handler = NULL;
452 acpi_ut_remove_reference(handler_obj);
453
454 return_VOID;
455 }
456
457
458
459 last_obj_ptr = &obj_desc->region.next;
460 obj_desc = obj_desc->region.next;
461
462
463
464 if (obj_desc == start_desc) {
465 ACPI_ERROR((AE_INFO,
466 "Circular handler list in region object %p",
467 region_obj));
468 return_VOID;
469 }
470 }
471
472
473
474 ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
475 "Cannot remove region %p from address handler %p\n",
476 region_obj, handler_obj));
477
478 return_VOID;
479}
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496acpi_status
497acpi_ev_attach_region(union acpi_operand_object *handler_obj,
498 union acpi_operand_object *region_obj,
499 u8 acpi_ns_is_locked)
500{
501
502 ACPI_FUNCTION_TRACE(ev_attach_region);
503
504
505
506 if (region_obj->region.handler) {
507 return_ACPI_STATUS(AE_ALREADY_EXISTS);
508 }
509
510 ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
511 "Adding Region [%4.4s] %p to address handler %p [%s]\n",
512 acpi_ut_get_node_name(region_obj->region.node),
513 region_obj, handler_obj,
514 acpi_ut_get_region_name(region_obj->region.
515 space_id)));
516
517
518
519 region_obj->region.next = handler_obj->address_space.region_list;
520 handler_obj->address_space.region_list = region_obj;
521 region_obj->region.handler = handler_obj;
522 acpi_ut_add_reference(handler_obj);
523
524 return_ACPI_STATUS(AE_OK);
525}
526
527
528
529
530
531
532
533
534
535
536
537
538
539void acpi_ev_associate_reg_method(union acpi_operand_object *region_obj)
540{
541 acpi_name *reg_name_ptr = (acpi_name *) METHOD_NAME__REG;
542 struct acpi_namespace_node *method_node;
543 struct acpi_namespace_node *node;
544 union acpi_operand_object *region_obj2;
545 acpi_status status;
546
547 ACPI_FUNCTION_TRACE(ev_associate_reg_method);
548
549 region_obj2 = acpi_ns_get_secondary_object(region_obj);
550 if (!region_obj2) {
551 return_VOID;
552 }
553
554 node = region_obj->region.node->parent;
555
556
557
558 status =
559 acpi_ns_search_one_scope(*reg_name_ptr, node, ACPI_TYPE_METHOD,
560 &method_node);
561 if (ACPI_SUCCESS(status)) {
562
563
564
565
566
567 region_obj2->extra.method_REG = method_node;
568 }
569
570 return_VOID;
571}
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586acpi_status
587acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function)
588{
589 struct acpi_evaluate_info *info;
590 union acpi_operand_object *args[3];
591 union acpi_operand_object *region_obj2;
592 acpi_status status;
593
594 ACPI_FUNCTION_TRACE(ev_execute_reg_method);
595
596 region_obj2 = acpi_ns_get_secondary_object(region_obj);
597 if (!region_obj2) {
598 return_ACPI_STATUS(AE_NOT_EXIST);
599 }
600
601 if (region_obj2->extra.method_REG == NULL ||
602 region_obj->region.handler == NULL ||
603 !acpi_gbl_reg_methods_enabled) {
604 return_ACPI_STATUS(AE_OK);
605 }
606
607
608
609 if ((function == ACPI_REG_CONNECT &&
610 region_obj->common.flags & AOPOBJ_REG_CONNECTED) ||
611 (function == ACPI_REG_DISCONNECT &&
612 !(region_obj->common.flags & AOPOBJ_REG_CONNECTED))) {
613 return_ACPI_STATUS(AE_OK);
614 }
615
616
617
618 info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
619 if (!info) {
620 return_ACPI_STATUS(AE_NO_MEMORY);
621 }
622
623 info->prefix_node = region_obj2->extra.method_REG;
624 info->relative_pathname = NULL;
625 info->parameters = args;
626 info->flags = ACPI_IGNORE_RETURN_VALUE;
627
628
629
630
631
632
633
634
635
636
637
638 args[0] =
639 acpi_ut_create_integer_object((u64)region_obj->region.space_id);
640 if (!args[0]) {
641 status = AE_NO_MEMORY;
642 goto cleanup1;
643 }
644
645 args[1] = acpi_ut_create_integer_object((u64)function);
646 if (!args[1]) {
647 status = AE_NO_MEMORY;
648 goto cleanup2;
649 }
650
651 args[2] = NULL;
652
653
654
655 ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
656 (ACPI_TYPE_METHOD, info->prefix_node, NULL));
657
658 status = acpi_ns_evaluate(info);
659 acpi_ut_remove_reference(args[1]);
660
661 if (ACPI_FAILURE(status)) {
662 goto cleanup2;
663 }
664
665 if (function == ACPI_REG_CONNECT) {
666 region_obj->common.flags |= AOPOBJ_REG_CONNECTED;
667 } else {
668 region_obj->common.flags &= ~AOPOBJ_REG_CONNECTED;
669 }
670
671cleanup2:
672 acpi_ut_remove_reference(args[0]);
673
674cleanup1:
675 ACPI_FREE(info);
676 return_ACPI_STATUS(status);
677}
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694void
695acpi_ev_execute_reg_methods(struct acpi_namespace_node *node,
696 acpi_adr_space_type space_id, u32 function)
697{
698 struct acpi_reg_walk_info info;
699
700 ACPI_FUNCTION_TRACE(ev_execute_reg_methods);
701
702 info.space_id = space_id;
703 info.function = function;
704 info.reg_run_count = 0;
705
706 ACPI_DEBUG_PRINT_RAW((ACPI_DB_NAMES,
707 " Running _REG methods for SpaceId %s\n",
708 acpi_ut_get_region_name(info.space_id)));
709
710
711
712
713
714
715
716 (void)acpi_ns_walk_namespace(ACPI_TYPE_ANY, node, ACPI_UINT32_MAX,
717 ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run, NULL,
718 &info, NULL);
719
720
721
722 if (space_id == ACPI_ADR_SPACE_EC) {
723 acpi_ev_orphan_ec_reg_method(node);
724 }
725
726 ACPI_DEBUG_PRINT_RAW((ACPI_DB_NAMES,
727 " Executed %u _REG methods for SpaceId %s\n",
728 info.reg_run_count,
729 acpi_ut_get_region_name(info.space_id)));
730
731 return_VOID;
732}
733
734
735
736
737
738
739
740
741
742
743
744static acpi_status
745acpi_ev_reg_run(acpi_handle obj_handle,
746 u32 level, void *context, void **return_value)
747{
748 union acpi_operand_object *obj_desc;
749 struct acpi_namespace_node *node;
750 acpi_status status;
751 struct acpi_reg_walk_info *info;
752
753 info = ACPI_CAST_PTR(struct acpi_reg_walk_info, context);
754
755
756
757 node = acpi_ns_validate_handle(obj_handle);
758 if (!node) {
759 return (AE_BAD_PARAMETER);
760 }
761
762
763
764
765
766 if ((node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) {
767 return (AE_OK);
768 }
769
770
771
772 obj_desc = acpi_ns_get_attached_object(node);
773 if (!obj_desc) {
774
775
776
777 return (AE_OK);
778 }
779
780
781
782 if (obj_desc->region.space_id != info->space_id) {
783
784
785
786 return (AE_OK);
787 }
788
789 info->reg_run_count++;
790 status = acpi_ev_execute_reg_method(obj_desc, info->function);
791 return (status);
792}
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819static void
820acpi_ev_orphan_ec_reg_method(struct acpi_namespace_node *ec_device_node)
821{
822 acpi_handle reg_method;
823 struct acpi_namespace_node *next_node;
824 acpi_status status;
825 struct acpi_object_list args;
826 union acpi_object objects[2];
827
828 ACPI_FUNCTION_TRACE(ev_orphan_ec_reg_method);
829
830 if (!ec_device_node) {
831 return_VOID;
832 }
833
834
835
836 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
837
838
839
840 status = acpi_get_handle(ec_device_node, METHOD_NAME__REG, ®_method);
841 if (ACPI_FAILURE(status)) {
842 goto exit;
843 }
844
845
846
847
848
849
850
851
852 next_node = acpi_ns_get_next_node(ec_device_node, NULL);
853 while (next_node) {
854 if ((next_node->type == ACPI_TYPE_REGION) &&
855 (next_node->object) &&
856 (next_node->object->region.space_id == ACPI_ADR_SPACE_EC)) {
857 goto exit;
858 }
859
860 next_node = acpi_ns_get_next_node(ec_device_node, next_node);
861 }
862
863
864
865 args.count = 2;
866 args.pointer = objects;
867 objects[0].type = ACPI_TYPE_INTEGER;
868 objects[0].integer.value = ACPI_ADR_SPACE_EC;
869 objects[1].type = ACPI_TYPE_INTEGER;
870 objects[1].integer.value = ACPI_REG_CONNECT;
871
872 status = acpi_evaluate_object(reg_method, NULL, &args, NULL);
873
874exit:
875
876
877 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
878 return_VOID;
879}
880