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Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
[linux-btrfs-devel.git] / drivers / acpi / acpica / nsdump.c
blobb683cc2ff9d3cc15d0acd687f11a8d70bbcf17b3
1 /******************************************************************************
2 *
3 * Module Name: nsdump - table dumping routines for debug
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2011, Intel Corp.
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 "accommon.h"
46 #include "acnamesp.h"
47
48 #define _COMPONENT ACPI_NAMESPACE
49 ACPI_MODULE_NAME("nsdump")
50
51 /* Local prototypes */
52 #ifdef ACPI_OBSOLETE_FUNCTIONS
53 void acpi_ns_dump_root_devices(void);
54
55 static acpi_status
56 acpi_ns_dump_one_device(acpi_handle obj_handle,
57 u32 level, void *context, void **return_value);
58 #endif
59
60 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
61 /*******************************************************************************
62 *
63 * FUNCTION: acpi_ns_print_pathname
64 *
65 * PARAMETERS: num_segments - Number of ACPI name segments
66 * Pathname - The compressed (internal) path
67 *
68 * RETURN: None
69 *
70 * DESCRIPTION: Print an object's full namespace pathname
71 *
72 ******************************************************************************/
73
74 void acpi_ns_print_pathname(u32 num_segments, char *pathname)
75 {
76 u32 i;
77
78 ACPI_FUNCTION_NAME(ns_print_pathname);
79
80 if (!(acpi_dbg_level & ACPI_LV_NAMES)
81 || !(acpi_dbg_layer & ACPI_NAMESPACE)) {
82 return;
83 }
84
85 /* Print the entire name */
86
87 ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "["));
88
89 while (num_segments) {
90 for (i = 0; i < 4; i++) {
91 ACPI_IS_PRINT(pathname[i]) ?
92 acpi_os_printf("%c", pathname[i]) :
93 acpi_os_printf("?");
94 }
95
96 pathname += ACPI_NAME_SIZE;
97 num_segments--;
98 if (num_segments) {
99 acpi_os_printf(".");
100 }
101 }
102
103 acpi_os_printf("]\n");
104 }
105
106 /*******************************************************************************
107 *
108 * FUNCTION: acpi_ns_dump_pathname
109 *
110 * PARAMETERS: Handle - Object
111 * Msg - Prefix message
112 * Level - Desired debug level
113 * Component - Caller's component ID
114 *
115 * RETURN: None
116 *
117 * DESCRIPTION: Print an object's full namespace pathname
118 * Manages allocation/freeing of a pathname buffer
119 *
120 ******************************************************************************/
121
122 void
123 acpi_ns_dump_pathname(acpi_handle handle, char *msg, u32 level, u32 component)
124 {
125
126 ACPI_FUNCTION_TRACE(ns_dump_pathname);
127
128 /* Do this only if the requested debug level and component are enabled */
129
130 if (!(acpi_dbg_level & level) || !(acpi_dbg_layer & component)) {
131 return_VOID;
132 }
133
134 /* Convert handle to a full pathname and print it (with supplied message) */
135
136 acpi_ns_print_node_pathname(handle, msg);
137 acpi_os_printf("\n");
138 return_VOID;
139 }
140
141 /*******************************************************************************
142 *
143 * FUNCTION: acpi_ns_dump_one_object
144 *
145 * PARAMETERS: obj_handle - Node to be dumped
146 * Level - Nesting level of the handle
147 * Context - Passed into walk_namespace
148 * return_value - Not used
149 *
150 * RETURN: Status
151 *
152 * DESCRIPTION: Dump a single Node
153 * This procedure is a user_function called by acpi_ns_walk_namespace.
154 *
155 ******************************************************************************/
156
157 acpi_status
158 acpi_ns_dump_one_object(acpi_handle obj_handle,
159 u32 level, void *context, void **return_value)
160 {
161 struct acpi_walk_info *info = (struct acpi_walk_info *)context;
162 struct acpi_namespace_node *this_node;
163 union acpi_operand_object *obj_desc = NULL;
164 acpi_object_type obj_type;
165 acpi_object_type type;
166 u32 bytes_to_dump;
167 u32 dbg_level;
168 u32 i;
169
170 ACPI_FUNCTION_NAME(ns_dump_one_object);
171
172 /* Is output enabled? */
173
174 if (!(acpi_dbg_level & info->debug_level)) {
175 return (AE_OK);
176 }
177
178 if (!obj_handle) {
179 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Null object handle\n"));
180 return (AE_OK);
181 }
182
183 this_node = acpi_ns_validate_handle(obj_handle);
184 if (!this_node) {
185 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Invalid object handle %p\n",
186 obj_handle));
187 return (AE_OK);
188 }
189
190 type = this_node->type;
191
192 /* Check if the owner matches */
193
194 if ((info->owner_id != ACPI_OWNER_ID_MAX) &&
195 (info->owner_id != this_node->owner_id)) {
196 return (AE_OK);
197 }
198
199 if (!(info->display_type & ACPI_DISPLAY_SHORT)) {
200
201 /* Indent the object according to the level */
202
203 acpi_os_printf("%2d%*s", (u32) level - 1, (int)level * 2, " ");
204
205 /* Check the node type and name */
206
207 if (type > ACPI_TYPE_LOCAL_MAX) {
208 ACPI_WARNING((AE_INFO,
209 "Invalid ACPI Object Type 0x%08X", type));
210 }
211
212 if (!acpi_ut_valid_acpi_name(this_node->name.integer)) {
213 this_node->name.integer =
214 acpi_ut_repair_name(this_node->name.ascii);
215
216 ACPI_WARNING((AE_INFO, "Invalid ACPI Name %08X",
217 this_node->name.integer));
218 }
219
220 acpi_os_printf("%4.4s", acpi_ut_get_node_name(this_node));
221 }
222
223 /* Now we can print out the pertinent information */
224
225 acpi_os_printf(" %-12s %p %2.2X ",
226 acpi_ut_get_type_name(type), this_node,
227 this_node->owner_id);
228
229 dbg_level = acpi_dbg_level;
230 acpi_dbg_level = 0;
231 obj_desc = acpi_ns_get_attached_object(this_node);
232 acpi_dbg_level = dbg_level;
233
234 /* Temp nodes are those nodes created by a control method */
235
236 if (this_node->flags & ANOBJ_TEMPORARY) {
237 acpi_os_printf("(T) ");
238 }
239
240 switch (info->display_type & ACPI_DISPLAY_MASK) {
241 case ACPI_DISPLAY_SUMMARY:
242
243 if (!obj_desc) {
244
245 /* No attached object, we are done */
246
247 acpi_os_printf("\n");
248 return (AE_OK);
249 }
250
251 switch (type) {
252 case ACPI_TYPE_PROCESSOR:
253
254 acpi_os_printf("ID %X Len %.4X Addr %p\n",
255 obj_desc->processor.proc_id,
256 obj_desc->processor.length,
257 ACPI_CAST_PTR(void,
258 obj_desc->processor.
259 address));
260 break;
261
262 case ACPI_TYPE_DEVICE:
263
264 acpi_os_printf("Notify Object: %p\n", obj_desc);
265 break;
266
267 case ACPI_TYPE_METHOD:
268
269 acpi_os_printf("Args %X Len %.4X Aml %p\n",
270 (u32) obj_desc->method.param_count,
271 obj_desc->method.aml_length,
272 obj_desc->method.aml_start);
273 break;
274
275 case ACPI_TYPE_INTEGER:
276
277 acpi_os_printf("= %8.8X%8.8X\n",
278 ACPI_FORMAT_UINT64(obj_desc->integer.
279 value));
280 break;
281
282 case ACPI_TYPE_PACKAGE:
283
284 if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
285 acpi_os_printf("Elements %.2X\n",
286 obj_desc->package.count);
287 } else {
288 acpi_os_printf("[Length not yet evaluated]\n");
289 }
290 break;
291
292 case ACPI_TYPE_BUFFER:
293
294 if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
295 acpi_os_printf("Len %.2X",
296 obj_desc->buffer.length);
297
298 /* Dump some of the buffer */
299
300 if (obj_desc->buffer.length > 0) {
301 acpi_os_printf(" =");
302 for (i = 0;
303 (i < obj_desc->buffer.length
304 && i < 12); i++) {
305 acpi_os_printf(" %.2hX",
306 obj_desc->buffer.
307 pointer[i]);
308 }
309 }
310 acpi_os_printf("\n");
311 } else {
312 acpi_os_printf("[Length not yet evaluated]\n");
313 }
314 break;
315
316 case ACPI_TYPE_STRING:
317
318 acpi_os_printf("Len %.2X ", obj_desc->string.length);
319 acpi_ut_print_string(obj_desc->string.pointer, 32);
320 acpi_os_printf("\n");
321 break;
322
323 case ACPI_TYPE_REGION:
324
325 acpi_os_printf("[%s]",
326 acpi_ut_get_region_name(obj_desc->region.
327 space_id));
328 if (obj_desc->region.flags & AOPOBJ_DATA_VALID) {
329 acpi_os_printf(" Addr %8.8X%8.8X Len %.4X\n",
330 ACPI_FORMAT_NATIVE_UINT
331 (obj_desc->region.address),
332 obj_desc->region.length);
333 } else {
334 acpi_os_printf
335 (" [Address/Length not yet evaluated]\n");
336 }
337 break;
338
339 case ACPI_TYPE_LOCAL_REFERENCE:
340
341 acpi_os_printf("[%s]\n",
342 acpi_ut_get_reference_name(obj_desc));
343 break;
344
345 case ACPI_TYPE_BUFFER_FIELD:
346
347 if (obj_desc->buffer_field.buffer_obj &&
348 obj_desc->buffer_field.buffer_obj->buffer.node) {
349 acpi_os_printf("Buf [%4.4s]",
350 acpi_ut_get_node_name(obj_desc->
351 buffer_field.
352 buffer_obj->
353 buffer.
354 node));
355 }
356 break;
357
358 case ACPI_TYPE_LOCAL_REGION_FIELD:
359
360 acpi_os_printf("Rgn [%4.4s]",
361 acpi_ut_get_node_name(obj_desc->
362 common_field.
363 region_obj->region.
364 node));
365 break;
366
367 case ACPI_TYPE_LOCAL_BANK_FIELD:
368
369 acpi_os_printf("Rgn [%4.4s] Bnk [%4.4s]",
370 acpi_ut_get_node_name(obj_desc->
371 common_field.
372 region_obj->region.
373 node),
374 acpi_ut_get_node_name(obj_desc->
375 bank_field.
376 bank_obj->
377 common_field.
378 node));
379 break;
380
381 case ACPI_TYPE_LOCAL_INDEX_FIELD:
382
383 acpi_os_printf("Idx [%4.4s] Dat [%4.4s]",
384 acpi_ut_get_node_name(obj_desc->
385 index_field.
386 index_obj->
387 common_field.node),
388 acpi_ut_get_node_name(obj_desc->
389 index_field.
390 data_obj->
391 common_field.
392 node));
393 break;
394
395 case ACPI_TYPE_LOCAL_ALIAS:
396 case ACPI_TYPE_LOCAL_METHOD_ALIAS:
397
398 acpi_os_printf("Target %4.4s (%p)\n",
399 acpi_ut_get_node_name(obj_desc),
400 obj_desc);
401 break;
402
403 default:
404
405 acpi_os_printf("Object %p\n", obj_desc);
406 break;
407 }
408
409 /* Common field handling */
410
411 switch (type) {
412 case ACPI_TYPE_BUFFER_FIELD:
413 case ACPI_TYPE_LOCAL_REGION_FIELD:
414 case ACPI_TYPE_LOCAL_BANK_FIELD:
415 case ACPI_TYPE_LOCAL_INDEX_FIELD:
416
417 acpi_os_printf(" Off %.3X Len %.2X Acc %.2hd\n",
418 (obj_desc->common_field.
419 base_byte_offset * 8)
420 +
421 obj_desc->common_field.
422 start_field_bit_offset,
423 obj_desc->common_field.bit_length,
424 obj_desc->common_field.
425 access_byte_width);
426 break;
427
428 default:
429 break;
430 }
431 break;
432
433 case ACPI_DISPLAY_OBJECTS:
434
435 acpi_os_printf("O:%p", obj_desc);
436 if (!obj_desc) {
437
438 /* No attached object, we are done */
439
440 acpi_os_printf("\n");
441 return (AE_OK);
442 }
443
444 acpi_os_printf("(R%u)", obj_desc->common.reference_count);
445
446 switch (type) {
447 case ACPI_TYPE_METHOD:
448
449 /* Name is a Method and its AML offset/length are set */
450
451 acpi_os_printf(" M:%p-%X\n", obj_desc->method.aml_start,
452 obj_desc->method.aml_length);
453 break;
454
455 case ACPI_TYPE_INTEGER:
456
457 acpi_os_printf(" I:%8.8X8.8%X\n",
458 ACPI_FORMAT_UINT64(obj_desc->integer.
459 value));
460 break;
461
462 case ACPI_TYPE_STRING:
463
464 acpi_os_printf(" S:%p-%X\n", obj_desc->string.pointer,
465 obj_desc->string.length);
466 break;
467
468 case ACPI_TYPE_BUFFER:
469
470 acpi_os_printf(" B:%p-%X\n", obj_desc->buffer.pointer,
471 obj_desc->buffer.length);
472 break;
473
474 default:
475
476 acpi_os_printf("\n");
477 break;
478 }
479 break;
480
481 default:
482 acpi_os_printf("\n");
483 break;
484 }
485
486 /* If debug turned off, done */
487
488 if (!(acpi_dbg_level & ACPI_LV_VALUES)) {
489 return (AE_OK);
490 }
491
492 /* If there is an attached object, display it */
493
494 dbg_level = acpi_dbg_level;
495 acpi_dbg_level = 0;
496 obj_desc = acpi_ns_get_attached_object(this_node);
497 acpi_dbg_level = dbg_level;
498
499 /* Dump attached objects */
500
501 while (obj_desc) {
502 obj_type = ACPI_TYPE_INVALID;
503 acpi_os_printf("Attached Object %p: ", obj_desc);
504
505 /* Decode the type of attached object and dump the contents */
506
507 switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
508 case ACPI_DESC_TYPE_NAMED:
509
510 acpi_os_printf("(Ptr to Node)\n");
511 bytes_to_dump = sizeof(struct acpi_namespace_node);
512 ACPI_DUMP_BUFFER(obj_desc, bytes_to_dump);
513 break;
514
515 case ACPI_DESC_TYPE_OPERAND:
516
517 obj_type = obj_desc->common.type;
518
519 if (obj_type > ACPI_TYPE_LOCAL_MAX) {
520 acpi_os_printf
521 ("(Pointer to ACPI Object type %.2X [UNKNOWN])\n",
522 obj_type);
523 bytes_to_dump = 32;
524 } else {
525 acpi_os_printf
526 ("(Pointer to ACPI Object type %.2X [%s])\n",
527 obj_type, acpi_ut_get_type_name(obj_type));
528 bytes_to_dump =
529 sizeof(union acpi_operand_object);
530 }
531
532 ACPI_DUMP_BUFFER(obj_desc, bytes_to_dump);
533 break;
534
535 default:
536
537 break;
538 }
539
540 /* If value is NOT an internal object, we are done */
541
542 if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) !=
543 ACPI_DESC_TYPE_OPERAND) {
544 goto cleanup;
545 }
546
547 /* Valid object, get the pointer to next level, if any */
548
549 switch (obj_type) {
550 case ACPI_TYPE_BUFFER:
551 case ACPI_TYPE_STRING:
552 /*
553 * NOTE: takes advantage of common fields between string/buffer
554 */
555 bytes_to_dump = obj_desc->string.length;
556 obj_desc = (void *)obj_desc->string.pointer;
557 acpi_os_printf("(Buffer/String pointer %p length %X)\n",
558 obj_desc, bytes_to_dump);
559 ACPI_DUMP_BUFFER(obj_desc, bytes_to_dump);
560 goto cleanup;
561
562 case ACPI_TYPE_BUFFER_FIELD:
563 obj_desc =
564 (union acpi_operand_object *)obj_desc->buffer_field.
565 buffer_obj;
566 break;
567
568 case ACPI_TYPE_PACKAGE:
569 obj_desc = (void *)obj_desc->package.elements;
570 break;
571
572 case ACPI_TYPE_METHOD:
573 obj_desc = (void *)obj_desc->method.aml_start;
574 break;
575
576 case ACPI_TYPE_LOCAL_REGION_FIELD:
577 obj_desc = (void *)obj_desc->field.region_obj;
578 break;
579
580 case ACPI_TYPE_LOCAL_BANK_FIELD:
581 obj_desc = (void *)obj_desc->bank_field.region_obj;
582 break;
583
584 case ACPI_TYPE_LOCAL_INDEX_FIELD:
585 obj_desc = (void *)obj_desc->index_field.index_obj;
586 break;
587
588 default:
589 goto cleanup;
590 }
591
592 obj_type = ACPI_TYPE_INVALID; /* Terminate loop after next pass */
593 }
594
595 cleanup:
596 acpi_os_printf("\n");
597 return (AE_OK);
598 }
599
600 #ifdef ACPI_FUTURE_USAGE
601 /*******************************************************************************
602 *
603 * FUNCTION: acpi_ns_dump_objects
604 *
605 * PARAMETERS: Type - Object type to be dumped
606 * display_type - 0 or ACPI_DISPLAY_SUMMARY
607 * max_depth - Maximum depth of dump. Use ACPI_UINT32_MAX
608 * for an effectively unlimited depth.
609 * owner_id - Dump only objects owned by this ID. Use
610 * ACPI_UINT32_MAX to match all owners.
611 * start_handle - Where in namespace to start/end search
612 *
613 * RETURN: None
614 *
615 * DESCRIPTION: Dump typed objects within the loaded namespace. Uses
616 * acpi_ns_walk_namespace in conjunction with acpi_ns_dump_one_object.
617 *
618 ******************************************************************************/
619
620 void
621 acpi_ns_dump_objects(acpi_object_type type,
622 u8 display_type,
623 u32 max_depth,
624 acpi_owner_id owner_id, acpi_handle start_handle)
625 {
626 struct acpi_walk_info info;
627 acpi_status status;
628
629 ACPI_FUNCTION_ENTRY();
630
631 /*
632 * Just lock the entire namespace for the duration of the dump.
633 * We don't want any changes to the namespace during this time,
634 * especially the temporary nodes since we are going to display
635 * them also.
636 */
637 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
638 if (ACPI_FAILURE(status)) {
639 acpi_os_printf("Could not acquire namespace mutex\n");
640 return;
641 }
642
643 info.debug_level = ACPI_LV_TABLES;
644 info.owner_id = owner_id;
645 info.display_type = display_type;
646
647 (void)acpi_ns_walk_namespace(type, start_handle, max_depth,
648 ACPI_NS_WALK_NO_UNLOCK |
649 ACPI_NS_WALK_TEMP_NODES,
650 acpi_ns_dump_one_object, NULL,
651 (void *)&info, NULL);
652
653 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
654 }
655 #endif /* ACPI_FUTURE_USAGE */
656
657 /*******************************************************************************
658 *
659 * FUNCTION: acpi_ns_dump_entry
660 *
661 * PARAMETERS: Handle - Node to be dumped
662 * debug_level - Output level
663 *
664 * RETURN: None
665 *
666 * DESCRIPTION: Dump a single Node
667 *
668 ******************************************************************************/
669
670 void acpi_ns_dump_entry(acpi_handle handle, u32 debug_level)
671 {
672 struct acpi_walk_info info;
673
674 ACPI_FUNCTION_ENTRY();
675
676 info.debug_level = debug_level;
677 info.owner_id = ACPI_OWNER_ID_MAX;
678 info.display_type = ACPI_DISPLAY_SUMMARY;
679
680 (void)acpi_ns_dump_one_object(handle, 1, &info, NULL);
681 }
682
683 #ifdef ACPI_ASL_COMPILER
684 /*******************************************************************************
685 *
686 * FUNCTION: acpi_ns_dump_tables
687 *
688 * PARAMETERS: search_base - Root of subtree to be dumped, or
689 * NS_ALL to dump the entire namespace
690 * max_depth - Maximum depth of dump. Use INT_MAX
691 * for an effectively unlimited depth.
692 *
693 * RETURN: None
694 *
695 * DESCRIPTION: Dump the name space, or a portion of it.
696 *
697 ******************************************************************************/
698
699 void acpi_ns_dump_tables(acpi_handle search_base, u32 max_depth)
700 {
701 acpi_handle search_handle = search_base;
702
703 ACPI_FUNCTION_TRACE(ns_dump_tables);
704
705 if (!acpi_gbl_root_node) {
706 /*
707 * If the name space has not been initialized,
708 * there is nothing to dump.
709 */
710 ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
711 "namespace not initialized!\n"));
712 return_VOID;
713 }
714
715 if (ACPI_NS_ALL == search_base) {
716
717 /* Entire namespace */
718
719 search_handle = acpi_gbl_root_node;
720 ACPI_DEBUG_PRINT((ACPI_DB_TABLES, "\\\n"));
721 }
722
723 acpi_ns_dump_objects(ACPI_TYPE_ANY, ACPI_DISPLAY_OBJECTS, max_depth,
724 ACPI_OWNER_ID_MAX, search_handle);
725 return_VOID;
726 }
727 #endif /* _ACPI_ASL_COMPILER */
728 #endif /* defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER) */
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