summaryrefslogtreecommitdiff
path: root/drivers/acpi/acpica/dbobject.c
blob: f9fc84bc3e84f8d0f078e58140b33541922a19fa (plain)
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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
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
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
 *
 * Module Name: dbobject - ACPI object decode and display
 *
 ******************************************************************************/

#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acdebug.h"

#define _COMPONENT          ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbobject")

/* Local prototypes */
static void acpi_db_decode_node(struct acpi_namespace_node *node);

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_dump_method_info
 *
 * PARAMETERS:  status          - Method execution status
 *              walk_state      - Current state of the parse tree walk
 *
 * RETURN:      None
 *
 * DESCRIPTION: Called when a method has been aborted because of an error.
 *              Dumps the method execution stack, and the method locals/args,
 *              and disassembles the AML opcode that failed.
 *
 ******************************************************************************/

void
acpi_db_dump_method_info(acpi_status status, struct acpi_walk_state *walk_state)
{
	struct acpi_thread_state *thread;
	struct acpi_namespace_node *node;

	node = walk_state->method_node;

	/* There are no locals or arguments for the module-level code case */

	if (node == acpi_gbl_root_node) {
		return;
	}

	/* Ignore control codes, they are not errors */

	if ((status & AE_CODE_MASK) == AE_CODE_CONTROL) {
		return;
	}

	/* We may be executing a deferred opcode */

	if (walk_state->deferred_node) {
		acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
		return;
	}

	/*
	 * If there is no Thread, we are not actually executing a method.
	 * This can happen when the iASL compiler calls the interpreter
	 * to perform constant folding.
	 */
	thread = walk_state->thread;
	if (!thread) {
		return;
	}

	/* Display the method locals and arguments */

	acpi_os_printf("\n");
	acpi_db_decode_locals(walk_state);
	acpi_os_printf("\n");
	acpi_db_decode_arguments(walk_state);
	acpi_os_printf("\n");
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_decode_internal_object
 *
 * PARAMETERS:  obj_desc        - Object to be displayed
 *
 * RETURN:      None
 *
 * DESCRIPTION: Short display of an internal object. Numbers/Strings/Buffers.
 *
 ******************************************************************************/

void acpi_db_decode_internal_object(union acpi_operand_object *obj_desc)
{
	u32 i;

	if (!obj_desc) {
		acpi_os_printf(" Uninitialized");
		return;
	}

	if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) {
		acpi_os_printf(" %p [%s]", obj_desc,
			       acpi_ut_get_descriptor_name(obj_desc));
		return;
	}

	acpi_os_printf(" %s", acpi_ut_get_object_type_name(obj_desc));

	switch (obj_desc->common.type) {
	case ACPI_TYPE_INTEGER:

		acpi_os_printf(" %8.8X%8.8X",
			       ACPI_FORMAT_UINT64(obj_desc->integer.value));
		break;

	case ACPI_TYPE_STRING:

		acpi_os_printf("(%u) \"%.60s",
			       obj_desc->string.length,
			       obj_desc->string.pointer);

		if (obj_desc->string.length > 60) {
			acpi_os_printf("...");
		} else {
			acpi_os_printf("\"");
		}
		break;

	case ACPI_TYPE_BUFFER:

		acpi_os_printf("(%u)", obj_desc->buffer.length);
		for (i = 0; (i < 8) && (i < obj_desc->buffer.length); i++) {
			acpi_os_printf(" %2.2X", obj_desc->buffer.pointer[i]);
		}
		break;

	default:

		acpi_os_printf(" %p", obj_desc);
		break;
	}
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_decode_node
 *
 * PARAMETERS:  node        - Object to be displayed
 *
 * RETURN:      None
 *
 * DESCRIPTION: Short display of a namespace node
 *
 ******************************************************************************/

static void acpi_db_decode_node(struct acpi_namespace_node *node)
{

	acpi_os_printf("<Node>          Name %4.4s",
		       acpi_ut_get_node_name(node));

	if (node->flags & ANOBJ_METHOD_ARG) {
		acpi_os_printf(" [Method Arg]");
	}
	if (node->flags & ANOBJ_METHOD_LOCAL) {
		acpi_os_printf(" [Method Local]");
	}

	switch (node->type) {

		/* These types have no attached object */

	case ACPI_TYPE_DEVICE:

		acpi_os_printf(" Device");
		break;

	case ACPI_TYPE_THERMAL:

		acpi_os_printf(" Thermal Zone");
		break;

	default:

		acpi_db_decode_internal_object(acpi_ns_get_attached_object
					       (node));
		break;
	}
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_internal_object
 *
 * PARAMETERS:  obj_desc        - Object to be displayed
 *              walk_state      - Current walk state
 *
 * RETURN:      None
 *
 * DESCRIPTION: Short display of an internal object
 *
 ******************************************************************************/

void
acpi_db_display_internal_object(union acpi_operand_object *obj_desc,
				struct acpi_walk_state *walk_state)
{
	u8 type;

	acpi_os_printf("%p ", obj_desc);

	if (!obj_desc) {
		acpi_os_printf("<Null Object>\n");
		return;
	}

	/* Decode the object type */

	switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
	case ACPI_DESC_TYPE_PARSER:

		acpi_os_printf("<Parser> ");
		break;

	case ACPI_DESC_TYPE_NAMED:

		acpi_db_decode_node((struct acpi_namespace_node *)obj_desc);
		break;

	case ACPI_DESC_TYPE_OPERAND:

		type = obj_desc->common.type;
		if (type > ACPI_TYPE_LOCAL_MAX) {
			acpi_os_printf(" Type %X [Invalid Type]", (u32)type);
			return;
		}

		/* Decode the ACPI object type */

		switch (obj_desc->common.type) {
		case ACPI_TYPE_LOCAL_REFERENCE:

			acpi_os_printf("[%s] ",
				       acpi_ut_get_reference_name(obj_desc));

			/* Decode the reference */

			switch (obj_desc->reference.class) {
			case ACPI_REFCLASS_LOCAL:

				acpi_os_printf("%X ",
					       obj_desc->reference.value);
				if (walk_state) {
					obj_desc = walk_state->local_variables
					    [obj_desc->reference.value].object;
					acpi_os_printf("%p", obj_desc);
					acpi_db_decode_internal_object
					    (obj_desc);
				}
				break;

			case ACPI_REFCLASS_ARG:

				acpi_os_printf("%X ",
					       obj_desc->reference.value);
				if (walk_state) {
					obj_desc = walk_state->arguments
					    [obj_desc->reference.value].object;
					acpi_os_printf("%p", obj_desc);
					acpi_db_decode_internal_object
					    (obj_desc);
				}
				break;

			case ACPI_REFCLASS_INDEX:

				switch (obj_desc->reference.target_type) {
				case ACPI_TYPE_BUFFER_FIELD:

					acpi_os_printf("%p",
						       obj_desc->reference.
						       object);
					acpi_db_decode_internal_object
					    (obj_desc->reference.object);
					break;

				case ACPI_TYPE_PACKAGE:

					acpi_os_printf("%p",
						       obj_desc->reference.
						       where);
					if (!obj_desc->reference.where) {
						acpi_os_printf
						    (" Uninitialized WHERE pointer");
					} else {
						acpi_db_decode_internal_object(*
									       (obj_desc->
										reference.
										where));
					}
					break;

				default:

					acpi_os_printf
					    ("Unknown index target type");
					break;
				}
				break;

			case ACPI_REFCLASS_REFOF:

				if (!obj_desc->reference.object) {
					acpi_os_printf
					    ("Uninitialized reference subobject pointer");
					break;
				}

				/* Reference can be to a Node or an Operand object */

				switch (ACPI_GET_DESCRIPTOR_TYPE
					(obj_desc->reference.object)) {
				case ACPI_DESC_TYPE_NAMED:

					acpi_db_decode_node(obj_desc->reference.
							    object);
					break;

				case ACPI_DESC_TYPE_OPERAND:

					acpi_db_decode_internal_object
					    (obj_desc->reference.object);
					break;

				default:
					break;
				}
				break;

			case ACPI_REFCLASS_NAME:

				acpi_db_decode_node(obj_desc->reference.node);
				break;

			case ACPI_REFCLASS_DEBUG:
			case ACPI_REFCLASS_TABLE:

				acpi_os_printf("\n");
				break;

			default:	/* Unknown reference class */

				acpi_os_printf("%2.2X\n",
					       obj_desc->reference.class);
				break;
			}
			break;

		default:

			acpi_os_printf("<Obj>          ");
			acpi_db_decode_internal_object(obj_desc);
			break;
		}
		break;

	default:

		acpi_os_printf("<Not a valid ACPI Object Descriptor> [%s]",
			       acpi_ut_get_descriptor_name(obj_desc));
		break;
	}

	acpi_os_printf("\n");
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_decode_locals
 *
 * PARAMETERS:  walk_state      - State for current method
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display all locals for the currently running control method
 *
 ******************************************************************************/

void acpi_db_decode_locals(struct acpi_walk_state *walk_state)
{
	u32 i;
	union acpi_operand_object *obj_desc;
	struct acpi_namespace_node *node;
	u8 display_locals = FALSE;

	node = walk_state->method_node;

	/* There are no locals for the module-level code case */

	if (node == acpi_gbl_root_node) {
		return;
	}

	if (!node) {
		acpi_os_printf
		    ("No method node (Executing subtree for buffer or opregion)\n");
		return;
	}

	if (node->type != ACPI_TYPE_METHOD) {
		acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
		return;
	}

	/* Are any locals actually set? */

	for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) {
		obj_desc = walk_state->local_variables[i].object;
		if (obj_desc) {
			display_locals = TRUE;
			break;
		}
	}

	/* If any are set, only display the ones that are set */

	if (display_locals) {
		acpi_os_printf
		    ("\nInitialized Local Variables for Method [%4.4s]:\n",
		     acpi_ut_get_node_name(node));

		for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) {
			obj_desc = walk_state->local_variables[i].object;
			if (obj_desc) {
				acpi_os_printf("  Local%X: ", i);
				acpi_db_display_internal_object(obj_desc,
								walk_state);
			}
		}
	} else {
		acpi_os_printf
		    ("No Local Variables are initialized for Method [%4.4s]\n",
		     acpi_ut_get_node_name(node));
	}
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_decode_arguments
 *
 * PARAMETERS:  walk_state      - State for current method
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display all arguments for the currently running control method
 *
 ******************************************************************************/

void acpi_db_decode_arguments(struct acpi_walk_state *walk_state)
{
	u32 i;
	union acpi_operand_object *obj_desc;
	struct acpi_namespace_node *node;
	u8 display_args = FALSE;

	node = walk_state->method_node;
	obj_desc = walk_state->method_desc;

	/* There are no arguments for the module-level code case */

	if (node == acpi_gbl_root_node) {
		return;
	}

	if (!node) {
		acpi_os_printf
		    ("No method node (Executing subtree for buffer or opregion)\n");
		return;
	}

	if (node->type != ACPI_TYPE_METHOD) {
		acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
		return;
	}

	/* Are any arguments actually set? */

	for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) {
		obj_desc = walk_state->arguments[i].object;
		if (obj_desc) {
			display_args = TRUE;
			break;
		}
	}

	/* If any are set, only display the ones that are set */

	if (display_args) {
		acpi_os_printf("Initialized Arguments for Method [%4.4s]:  "
			       "(%X arguments defined for method invocation)\n",
			       acpi_ut_get_node_name(node),
			       node->object->method.param_count);

		for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) {
			obj_desc = walk_state->arguments[i].object;
			if (obj_desc) {
				acpi_os_printf("  Arg%u:   ", i);
				acpi_db_display_internal_object(obj_desc,
								walk_state);
			}
		}
	} else {
		acpi_os_printf
		    ("No Arguments are initialized for method [%4.4s]\n",
		     acpi_ut_get_node_name(node));
	}
}