xref: /openbmc/linux/drivers/acpi/acpica/nsdump.c (revision 56a0eccd)
1 /******************************************************************************
2  *
3  * Module Name: nsdump - table dumping routines for debug
4  *
5  *****************************************************************************/
6 
7 /*
8  * Copyright (C) 2000 - 2016, 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 #include <acpi/acoutput.h>
48 
49 #define _COMPONENT          ACPI_NAMESPACE
50 ACPI_MODULE_NAME("nsdump")
51 
52 /* Local prototypes */
53 #ifdef ACPI_OBSOLETE_FUNCTIONS
54 void acpi_ns_dump_root_devices(void);
55 
56 static acpi_status
57 acpi_ns_dump_one_device(acpi_handle obj_handle,
58 			u32 level, void *context, void **return_value);
59 #endif
60 
61 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
62 
63 static acpi_status
64 acpi_ns_dump_one_object_path(acpi_handle obj_handle,
65 			     u32 level, void *context, void **return_value);
66 
67 static acpi_status
68 acpi_ns_get_max_depth(acpi_handle obj_handle,
69 		      u32 level, void *context, void **return_value);
70 
71 /*******************************************************************************
72  *
73  * FUNCTION:    acpi_ns_print_pathname
74  *
75  * PARAMETERS:  num_segments        - Number of ACPI name segments
76  *              pathname            - The compressed (internal) path
77  *
78  * RETURN:      None
79  *
80  * DESCRIPTION: Print an object's full namespace pathname
81  *
82  ******************************************************************************/
83 
84 void acpi_ns_print_pathname(u32 num_segments, char *pathname)
85 {
86 	u32 i;
87 
88 	ACPI_FUNCTION_NAME(ns_print_pathname);
89 
90 	/* Check if debug output enabled */
91 
92 	if (!ACPI_IS_DEBUG_ENABLED(ACPI_LV_NAMES, ACPI_NAMESPACE)) {
93 		return;
94 	}
95 
96 	/* Print the entire name */
97 
98 	ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "["));
99 
100 	while (num_segments) {
101 		for (i = 0; i < 4; i++) {
102 			isprint((int)pathname[i]) ?
103 			    acpi_os_printf("%c", pathname[i]) :
104 			    acpi_os_printf("?");
105 		}
106 
107 		pathname += ACPI_NAME_SIZE;
108 		num_segments--;
109 		if (num_segments) {
110 			acpi_os_printf(".");
111 		}
112 	}
113 
114 	acpi_os_printf("]\n");
115 }
116 
117 /*******************************************************************************
118  *
119  * FUNCTION:    acpi_ns_dump_pathname
120  *
121  * PARAMETERS:  handle              - Object
122  *              msg                 - Prefix message
123  *              level               - Desired debug level
124  *              component           - Caller's component ID
125  *
126  * RETURN:      None
127  *
128  * DESCRIPTION: Print an object's full namespace pathname
129  *              Manages allocation/freeing of a pathname buffer
130  *
131  ******************************************************************************/
132 
133 void
134 acpi_ns_dump_pathname(acpi_handle handle, char *msg, u32 level, u32 component)
135 {
136 
137 	ACPI_FUNCTION_TRACE(ns_dump_pathname);
138 
139 	/* Do this only if the requested debug level and component are enabled */
140 
141 	if (!ACPI_IS_DEBUG_ENABLED(level, component)) {
142 		return_VOID;
143 	}
144 
145 	/* Convert handle to a full pathname and print it (with supplied message) */
146 
147 	acpi_ns_print_node_pathname(handle, msg);
148 	acpi_os_printf("\n");
149 	return_VOID;
150 }
151 
152 /*******************************************************************************
153  *
154  * FUNCTION:    acpi_ns_dump_one_object
155  *
156  * PARAMETERS:  obj_handle          - Node to be dumped
157  *              level               - Nesting level of the handle
158  *              context             - Passed into walk_namespace
159  *              return_value        - Not used
160  *
161  * RETURN:      Status
162  *
163  * DESCRIPTION: Dump a single Node
164  *              This procedure is a user_function called by acpi_ns_walk_namespace.
165  *
166  ******************************************************************************/
167 
168 acpi_status
169 acpi_ns_dump_one_object(acpi_handle obj_handle,
170 			u32 level, void *context, void **return_value)
171 {
172 	struct acpi_walk_info *info = (struct acpi_walk_info *)context;
173 	struct acpi_namespace_node *this_node;
174 	union acpi_operand_object *obj_desc = NULL;
175 	acpi_object_type obj_type;
176 	acpi_object_type type;
177 	u32 bytes_to_dump;
178 	u32 dbg_level;
179 	u32 i;
180 
181 	ACPI_FUNCTION_NAME(ns_dump_one_object);
182 
183 	/* Is output enabled? */
184 
185 	if (!(acpi_dbg_level & info->debug_level)) {
186 		return (AE_OK);
187 	}
188 
189 	if (!obj_handle) {
190 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Null object handle\n"));
191 		return (AE_OK);
192 	}
193 
194 	this_node = acpi_ns_validate_handle(obj_handle);
195 	if (!this_node) {
196 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Invalid object handle %p\n",
197 				  obj_handle));
198 		return (AE_OK);
199 	}
200 
201 	type = this_node->type;
202 
203 	/* Check if the owner matches */
204 
205 	if ((info->owner_id != ACPI_OWNER_ID_MAX) &&
206 	    (info->owner_id != this_node->owner_id)) {
207 		return (AE_OK);
208 	}
209 
210 	if (!(info->display_type & ACPI_DISPLAY_SHORT)) {
211 
212 		/* Indent the object according to the level */
213 
214 		acpi_os_printf("%2d%*s", (u32) level - 1, (int)level * 2, " ");
215 
216 		/* Check the node type and name */
217 
218 		if (type > ACPI_TYPE_LOCAL_MAX) {
219 			ACPI_WARNING((AE_INFO,
220 				      "Invalid ACPI Object Type 0x%08X", type));
221 		}
222 
223 		acpi_os_printf("%4.4s", acpi_ut_get_node_name(this_node));
224 	}
225 
226 	/* Now we can print out the pertinent information */
227 
228 	acpi_os_printf(" %-12s %p %2.2X ",
229 		       acpi_ut_get_type_name(type), this_node,
230 		       this_node->owner_id);
231 
232 	dbg_level = acpi_dbg_level;
233 	acpi_dbg_level = 0;
234 	obj_desc = acpi_ns_get_attached_object(this_node);
235 	acpi_dbg_level = dbg_level;
236 
237 	/* Temp nodes are those nodes created by a control method */
238 
239 	if (this_node->flags & ANOBJ_TEMPORARY) {
240 		acpi_os_printf("(T) ");
241 	}
242 
243 	switch (info->display_type & ACPI_DISPLAY_MASK) {
244 	case ACPI_DISPLAY_SUMMARY:
245 
246 		if (!obj_desc) {
247 
248 			/* No attached object. Some types should always have an object */
249 
250 			switch (type) {
251 			case ACPI_TYPE_INTEGER:
252 			case ACPI_TYPE_PACKAGE:
253 			case ACPI_TYPE_BUFFER:
254 			case ACPI_TYPE_STRING:
255 			case ACPI_TYPE_METHOD:
256 
257 				acpi_os_printf("<No attached object>");
258 				break;
259 
260 			default:
261 
262 				break;
263 			}
264 
265 			acpi_os_printf("\n");
266 			return (AE_OK);
267 		}
268 
269 		switch (type) {
270 		case ACPI_TYPE_PROCESSOR:
271 
272 			acpi_os_printf("ID %02X Len %02X Addr %8.8X%8.8X\n",
273 				       obj_desc->processor.proc_id,
274 				       obj_desc->processor.length,
275 				       ACPI_FORMAT_UINT64(obj_desc->processor.
276 							  address));
277 			break;
278 
279 		case ACPI_TYPE_DEVICE:
280 
281 			acpi_os_printf("Notify Object: %p\n", obj_desc);
282 			break;
283 
284 		case ACPI_TYPE_METHOD:
285 
286 			acpi_os_printf("Args %X Len %.4X Aml %p\n",
287 				       (u32) obj_desc->method.param_count,
288 				       obj_desc->method.aml_length,
289 				       obj_desc->method.aml_start);
290 			break;
291 
292 		case ACPI_TYPE_INTEGER:
293 
294 			acpi_os_printf("= %8.8X%8.8X\n",
295 				       ACPI_FORMAT_UINT64(obj_desc->integer.
296 							  value));
297 			break;
298 
299 		case ACPI_TYPE_PACKAGE:
300 
301 			if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
302 				acpi_os_printf("Elements %.2X\n",
303 					       obj_desc->package.count);
304 			} else {
305 				acpi_os_printf("[Length not yet evaluated]\n");
306 			}
307 			break;
308 
309 		case ACPI_TYPE_BUFFER:
310 
311 			if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
312 				acpi_os_printf("Len %.2X",
313 					       obj_desc->buffer.length);
314 
315 				/* Dump some of the buffer */
316 
317 				if (obj_desc->buffer.length > 0) {
318 					acpi_os_printf(" =");
319 					for (i = 0;
320 					     (i < obj_desc->buffer.length
321 					      && i < 12); i++) {
322 						acpi_os_printf(" %.2hX",
323 							       obj_desc->buffer.
324 							       pointer[i]);
325 					}
326 				}
327 				acpi_os_printf("\n");
328 			} else {
329 				acpi_os_printf("[Length not yet evaluated]\n");
330 			}
331 			break;
332 
333 		case ACPI_TYPE_STRING:
334 
335 			acpi_os_printf("Len %.2X ", obj_desc->string.length);
336 			acpi_ut_print_string(obj_desc->string.pointer, 32);
337 			acpi_os_printf("\n");
338 			break;
339 
340 		case ACPI_TYPE_REGION:
341 
342 			acpi_os_printf("[%s]",
343 				       acpi_ut_get_region_name(obj_desc->region.
344 							       space_id));
345 			if (obj_desc->region.flags & AOPOBJ_DATA_VALID) {
346 				acpi_os_printf(" Addr %8.8X%8.8X Len %.4X\n",
347 					       ACPI_FORMAT_UINT64(obj_desc->
348 								  region.
349 								  address),
350 					       obj_desc->region.length);
351 			} else {
352 				acpi_os_printf
353 				    (" [Address/Length not yet evaluated]\n");
354 			}
355 			break;
356 
357 		case ACPI_TYPE_LOCAL_REFERENCE:
358 
359 			acpi_os_printf("[%s]\n",
360 				       acpi_ut_get_reference_name(obj_desc));
361 			break;
362 
363 		case ACPI_TYPE_BUFFER_FIELD:
364 
365 			if (obj_desc->buffer_field.buffer_obj &&
366 			    obj_desc->buffer_field.buffer_obj->buffer.node) {
367 				acpi_os_printf("Buf [%4.4s]",
368 					       acpi_ut_get_node_name(obj_desc->
369 								     buffer_field.
370 								     buffer_obj->
371 								     buffer.
372 								     node));
373 			}
374 			break;
375 
376 		case ACPI_TYPE_LOCAL_REGION_FIELD:
377 
378 			acpi_os_printf("Rgn [%4.4s]",
379 				       acpi_ut_get_node_name(obj_desc->
380 							     common_field.
381 							     region_obj->region.
382 							     node));
383 			break;
384 
385 		case ACPI_TYPE_LOCAL_BANK_FIELD:
386 
387 			acpi_os_printf("Rgn [%4.4s] Bnk [%4.4s]",
388 				       acpi_ut_get_node_name(obj_desc->
389 							     common_field.
390 							     region_obj->region.
391 							     node),
392 				       acpi_ut_get_node_name(obj_desc->
393 							     bank_field.
394 							     bank_obj->
395 							     common_field.
396 							     node));
397 			break;
398 
399 		case ACPI_TYPE_LOCAL_INDEX_FIELD:
400 
401 			acpi_os_printf("Idx [%4.4s] Dat [%4.4s]",
402 				       acpi_ut_get_node_name(obj_desc->
403 							     index_field.
404 							     index_obj->
405 							     common_field.node),
406 				       acpi_ut_get_node_name(obj_desc->
407 							     index_field.
408 							     data_obj->
409 							     common_field.
410 							     node));
411 			break;
412 
413 		case ACPI_TYPE_LOCAL_ALIAS:
414 		case ACPI_TYPE_LOCAL_METHOD_ALIAS:
415 
416 			acpi_os_printf("Target %4.4s (%p)\n",
417 				       acpi_ut_get_node_name(obj_desc),
418 				       obj_desc);
419 			break;
420 
421 		default:
422 
423 			acpi_os_printf("Object %p\n", obj_desc);
424 			break;
425 		}
426 
427 		/* Common field handling */
428 
429 		switch (type) {
430 		case ACPI_TYPE_BUFFER_FIELD:
431 		case ACPI_TYPE_LOCAL_REGION_FIELD:
432 		case ACPI_TYPE_LOCAL_BANK_FIELD:
433 		case ACPI_TYPE_LOCAL_INDEX_FIELD:
434 
435 			acpi_os_printf(" Off %.3X Len %.2X Acc %.2hd\n",
436 				       (obj_desc->common_field.
437 					base_byte_offset * 8)
438 				       +
439 				       obj_desc->common_field.
440 				       start_field_bit_offset,
441 				       obj_desc->common_field.bit_length,
442 				       obj_desc->common_field.
443 				       access_byte_width);
444 			break;
445 
446 		default:
447 
448 			break;
449 		}
450 		break;
451 
452 	case ACPI_DISPLAY_OBJECTS:
453 
454 		acpi_os_printf("O:%p", obj_desc);
455 		if (!obj_desc) {
456 
457 			/* No attached object, we are done */
458 
459 			acpi_os_printf("\n");
460 			return (AE_OK);
461 		}
462 
463 		acpi_os_printf("(R%u)", obj_desc->common.reference_count);
464 
465 		switch (type) {
466 		case ACPI_TYPE_METHOD:
467 
468 			/* Name is a Method and its AML offset/length are set */
469 
470 			acpi_os_printf(" M:%p-%X\n", obj_desc->method.aml_start,
471 				       obj_desc->method.aml_length);
472 			break;
473 
474 		case ACPI_TYPE_INTEGER:
475 
476 			acpi_os_printf(" I:%8.8X8.8%X\n",
477 				       ACPI_FORMAT_UINT64(obj_desc->integer.
478 							  value));
479 			break;
480 
481 		case ACPI_TYPE_STRING:
482 
483 			acpi_os_printf(" S:%p-%X\n", obj_desc->string.pointer,
484 				       obj_desc->string.length);
485 			break;
486 
487 		case ACPI_TYPE_BUFFER:
488 
489 			acpi_os_printf(" B:%p-%X\n", obj_desc->buffer.pointer,
490 				       obj_desc->buffer.length);
491 			break;
492 
493 		default:
494 
495 			acpi_os_printf("\n");
496 			break;
497 		}
498 		break;
499 
500 	default:
501 		acpi_os_printf("\n");
502 		break;
503 	}
504 
505 	/* If debug turned off, done */
506 
507 	if (!(acpi_dbg_level & ACPI_LV_VALUES)) {
508 		return (AE_OK);
509 	}
510 
511 	/* If there is an attached object, display it */
512 
513 	dbg_level = acpi_dbg_level;
514 	acpi_dbg_level = 0;
515 	obj_desc = acpi_ns_get_attached_object(this_node);
516 	acpi_dbg_level = dbg_level;
517 
518 	/* Dump attached objects */
519 
520 	while (obj_desc) {
521 		obj_type = ACPI_TYPE_INVALID;
522 		acpi_os_printf("Attached Object %p: ", obj_desc);
523 
524 		/* Decode the type of attached object and dump the contents */
525 
526 		switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
527 		case ACPI_DESC_TYPE_NAMED:
528 
529 			acpi_os_printf("(Ptr to Node)\n");
530 			bytes_to_dump = sizeof(struct acpi_namespace_node);
531 			ACPI_DUMP_BUFFER(obj_desc, bytes_to_dump);
532 			break;
533 
534 		case ACPI_DESC_TYPE_OPERAND:
535 
536 			obj_type = obj_desc->common.type;
537 
538 			if (obj_type > ACPI_TYPE_LOCAL_MAX) {
539 				acpi_os_printf
540 				    ("(Pointer to ACPI Object type %.2X [UNKNOWN])\n",
541 				     obj_type);
542 
543 				bytes_to_dump = 32;
544 			} else {
545 				acpi_os_printf
546 				    ("(Pointer to ACPI Object type %.2X [%s])\n",
547 				     obj_type, acpi_ut_get_type_name(obj_type));
548 
549 				bytes_to_dump =
550 				    sizeof(union acpi_operand_object);
551 			}
552 
553 			ACPI_DUMP_BUFFER(obj_desc, bytes_to_dump);
554 			break;
555 
556 		default:
557 
558 			break;
559 		}
560 
561 		/* If value is NOT an internal object, we are done */
562 
563 		if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) !=
564 		    ACPI_DESC_TYPE_OPERAND) {
565 			goto cleanup;
566 		}
567 
568 		/* Valid object, get the pointer to next level, if any */
569 
570 		switch (obj_type) {
571 		case ACPI_TYPE_BUFFER:
572 		case ACPI_TYPE_STRING:
573 			/*
574 			 * NOTE: takes advantage of common fields between string/buffer
575 			 */
576 			bytes_to_dump = obj_desc->string.length;
577 			obj_desc = (void *)obj_desc->string.pointer;
578 
579 			acpi_os_printf("(Buffer/String pointer %p length %X)\n",
580 				       obj_desc, bytes_to_dump);
581 			ACPI_DUMP_BUFFER(obj_desc, bytes_to_dump);
582 			goto cleanup;
583 
584 		case ACPI_TYPE_BUFFER_FIELD:
585 
586 			obj_desc =
587 			    (union acpi_operand_object *)obj_desc->buffer_field.
588 			    buffer_obj;
589 			break;
590 
591 		case ACPI_TYPE_PACKAGE:
592 
593 			obj_desc = (void *)obj_desc->package.elements;
594 			break;
595 
596 		case ACPI_TYPE_METHOD:
597 
598 			obj_desc = (void *)obj_desc->method.aml_start;
599 			break;
600 
601 		case ACPI_TYPE_LOCAL_REGION_FIELD:
602 
603 			obj_desc = (void *)obj_desc->field.region_obj;
604 			break;
605 
606 		case ACPI_TYPE_LOCAL_BANK_FIELD:
607 
608 			obj_desc = (void *)obj_desc->bank_field.region_obj;
609 			break;
610 
611 		case ACPI_TYPE_LOCAL_INDEX_FIELD:
612 
613 			obj_desc = (void *)obj_desc->index_field.index_obj;
614 			break;
615 
616 		default:
617 
618 			goto cleanup;
619 		}
620 
621 		obj_type = ACPI_TYPE_INVALID;	/* Terminate loop after next pass */
622 	}
623 
624 cleanup:
625 	acpi_os_printf("\n");
626 	return (AE_OK);
627 }
628 
629 /*******************************************************************************
630  *
631  * FUNCTION:    acpi_ns_dump_objects
632  *
633  * PARAMETERS:  type                - Object type to be dumped
634  *              display_type        - 0 or ACPI_DISPLAY_SUMMARY
635  *              max_depth           - Maximum depth of dump. Use ACPI_UINT32_MAX
636  *                                    for an effectively unlimited depth.
637  *              owner_id            - Dump only objects owned by this ID. Use
638  *                                    ACPI_UINT32_MAX to match all owners.
639  *              start_handle        - Where in namespace to start/end search
640  *
641  * RETURN:      None
642  *
643  * DESCRIPTION: Dump typed objects within the loaded namespace. Uses
644  *              acpi_ns_walk_namespace in conjunction with acpi_ns_dump_one_object.
645  *
646  ******************************************************************************/
647 
648 void
649 acpi_ns_dump_objects(acpi_object_type type,
650 		     u8 display_type,
651 		     u32 max_depth,
652 		     acpi_owner_id owner_id, acpi_handle start_handle)
653 {
654 	struct acpi_walk_info info;
655 	acpi_status status;
656 
657 	ACPI_FUNCTION_ENTRY();
658 
659 	/*
660 	 * Just lock the entire namespace for the duration of the dump.
661 	 * We don't want any changes to the namespace during this time,
662 	 * especially the temporary nodes since we are going to display
663 	 * them also.
664 	 */
665 	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
666 	if (ACPI_FAILURE(status)) {
667 		acpi_os_printf("Could not acquire namespace mutex\n");
668 		return;
669 	}
670 
671 	info.debug_level = ACPI_LV_TABLES;
672 	info.owner_id = owner_id;
673 	info.display_type = display_type;
674 
675 	(void)acpi_ns_walk_namespace(type, start_handle, max_depth,
676 				     ACPI_NS_WALK_NO_UNLOCK |
677 				     ACPI_NS_WALK_TEMP_NODES,
678 				     acpi_ns_dump_one_object, NULL,
679 				     (void *)&info, NULL);
680 
681 	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
682 }
683 
684 /*******************************************************************************
685  *
686  * FUNCTION:    acpi_ns_dump_one_object_path, acpi_ns_get_max_depth
687  *
688  * PARAMETERS:  obj_handle          - Node to be dumped
689  *              level               - Nesting level of the handle
690  *              context             - Passed into walk_namespace
691  *              return_value        - Not used
692  *
693  * RETURN:      Status
694  *
695  * DESCRIPTION: Dump the full pathname to a namespace object. acp_ns_get_max_depth
696  *              computes the maximum nesting depth in the namespace tree, in
697  *              order to simplify formatting in acpi_ns_dump_one_object_path.
698  *              These procedures are user_functions called by acpi_ns_walk_namespace.
699  *
700  ******************************************************************************/
701 
702 static acpi_status
703 acpi_ns_dump_one_object_path(acpi_handle obj_handle,
704 			     u32 level, void *context, void **return_value)
705 {
706 	u32 max_level = *((u32 *)context);
707 	char *pathname;
708 	struct acpi_namespace_node *node;
709 	int path_indent;
710 
711 	if (!obj_handle) {
712 		return (AE_OK);
713 	}
714 
715 	node = acpi_ns_validate_handle(obj_handle);
716 	if (!node) {
717 
718 		/* Ignore bad node during namespace walk */
719 
720 		return (AE_OK);
721 	}
722 
723 	pathname = acpi_ns_get_normalized_pathname(node, TRUE);
724 
725 	path_indent = 1;
726 	if (level <= max_level) {
727 		path_indent = max_level - level + 1;
728 	}
729 
730 	acpi_os_printf("%2d%*s%-12s%*s",
731 		       level, level, " ", acpi_ut_get_type_name(node->type),
732 		       path_indent, " ");
733 
734 	acpi_os_printf("%s\n", &pathname[1]);
735 	ACPI_FREE(pathname);
736 	return (AE_OK);
737 }
738 
739 static acpi_status
740 acpi_ns_get_max_depth(acpi_handle obj_handle,
741 		      u32 level, void *context, void **return_value)
742 {
743 	u32 *max_level = (u32 *)context;
744 
745 	if (level > *max_level) {
746 		*max_level = level;
747 	}
748 	return (AE_OK);
749 }
750 
751 /*******************************************************************************
752  *
753  * FUNCTION:    acpi_ns_dump_object_paths
754  *
755  * PARAMETERS:  type                - Object type to be dumped
756  *              display_type        - 0 or ACPI_DISPLAY_SUMMARY
757  *              max_depth           - Maximum depth of dump. Use ACPI_UINT32_MAX
758  *                                    for an effectively unlimited depth.
759  *              owner_id            - Dump only objects owned by this ID. Use
760  *                                    ACPI_UINT32_MAX to match all owners.
761  *              start_handle        - Where in namespace to start/end search
762  *
763  * RETURN:      None
764  *
765  * DESCRIPTION: Dump full object pathnames within the loaded namespace. Uses
766  *              acpi_ns_walk_namespace in conjunction with acpi_ns_dump_one_object_path.
767  *
768  ******************************************************************************/
769 
770 void
771 acpi_ns_dump_object_paths(acpi_object_type type,
772 			  u8 display_type,
773 			  u32 max_depth,
774 			  acpi_owner_id owner_id, acpi_handle start_handle)
775 {
776 	acpi_status status;
777 	u32 max_level = 0;
778 
779 	ACPI_FUNCTION_ENTRY();
780 
781 	/*
782 	 * Just lock the entire namespace for the duration of the dump.
783 	 * We don't want any changes to the namespace during this time,
784 	 * especially the temporary nodes since we are going to display
785 	 * them also.
786 	 */
787 	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
788 	if (ACPI_FAILURE(status)) {
789 		acpi_os_printf("Could not acquire namespace mutex\n");
790 		return;
791 	}
792 
793 	/* Get the max depth of the namespace tree, for formatting later */
794 
795 	(void)acpi_ns_walk_namespace(type, start_handle, max_depth,
796 				     ACPI_NS_WALK_NO_UNLOCK |
797 				     ACPI_NS_WALK_TEMP_NODES,
798 				     acpi_ns_get_max_depth, NULL,
799 				     (void *)&max_level, NULL);
800 
801 	/* Now dump the entire namespace */
802 
803 	(void)acpi_ns_walk_namespace(type, start_handle, max_depth,
804 				     ACPI_NS_WALK_NO_UNLOCK |
805 				     ACPI_NS_WALK_TEMP_NODES,
806 				     acpi_ns_dump_one_object_path, NULL,
807 				     (void *)&max_level, NULL);
808 
809 	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
810 }
811 
812 /*******************************************************************************
813  *
814  * FUNCTION:    acpi_ns_dump_entry
815  *
816  * PARAMETERS:  handle              - Node to be dumped
817  *              debug_level         - Output level
818  *
819  * RETURN:      None
820  *
821  * DESCRIPTION: Dump a single Node
822  *
823  ******************************************************************************/
824 
825 void acpi_ns_dump_entry(acpi_handle handle, u32 debug_level)
826 {
827 	struct acpi_walk_info info;
828 
829 	ACPI_FUNCTION_ENTRY();
830 
831 	info.debug_level = debug_level;
832 	info.owner_id = ACPI_OWNER_ID_MAX;
833 	info.display_type = ACPI_DISPLAY_SUMMARY;
834 
835 	(void)acpi_ns_dump_one_object(handle, 1, &info, NULL);
836 }
837 
838 #ifdef ACPI_ASL_COMPILER
839 /*******************************************************************************
840  *
841  * FUNCTION:    acpi_ns_dump_tables
842  *
843  * PARAMETERS:  search_base         - Root of subtree to be dumped, or
844  *                                    NS_ALL to dump the entire namespace
845  *              max_depth           - Maximum depth of dump. Use INT_MAX
846  *                                    for an effectively unlimited depth.
847  *
848  * RETURN:      None
849  *
850  * DESCRIPTION: Dump the name space, or a portion of it.
851  *
852  ******************************************************************************/
853 
854 void acpi_ns_dump_tables(acpi_handle search_base, u32 max_depth)
855 {
856 	acpi_handle search_handle = search_base;
857 
858 	ACPI_FUNCTION_TRACE(ns_dump_tables);
859 
860 	if (!acpi_gbl_root_node) {
861 		/*
862 		 * If the name space has not been initialized,
863 		 * there is nothing to dump.
864 		 */
865 		ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
866 				  "namespace not initialized!\n"));
867 		return_VOID;
868 	}
869 
870 	if (ACPI_NS_ALL == search_base) {
871 
872 		/* Entire namespace */
873 
874 		search_handle = acpi_gbl_root_node;
875 		ACPI_DEBUG_PRINT((ACPI_DB_TABLES, "\\\n"));
876 	}
877 
878 	acpi_ns_dump_objects(ACPI_TYPE_ANY, ACPI_DISPLAY_OBJECTS, max_depth,
879 			     ACPI_OWNER_ID_MAX, search_handle);
880 	return_VOID;
881 }
882 #endif
883 #endif
884