summaryrefslogtreecommitdiff
path: root/drivers/acpi/acpica/utdecode.c
blob: ad9f77eb554ffc7c55af007e75592091d7827c4e (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
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
 *
 * Module Name: utdecode - Utility decoding routines (value-to-string)
 *
 * Copyright (C) 2000 - 2019, Intel Corp.
 *
 *****************************************************************************/

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

#define _COMPONENT          ACPI_UTILITIES
ACPI_MODULE_NAME("utdecode")

/*
 * Properties of the ACPI Object Types, both internal and external.
 * The table is indexed by values of acpi_object_type
 */
const u8 acpi_gbl_ns_properties[ACPI_NUM_NS_TYPES] = {
	ACPI_NS_NORMAL,		/* 00 Any              */
	ACPI_NS_NORMAL,		/* 01 Number           */
	ACPI_NS_NORMAL,		/* 02 String           */
	ACPI_NS_NORMAL,		/* 03 Buffer           */
	ACPI_NS_NORMAL,		/* 04 Package          */
	ACPI_NS_NORMAL,		/* 05 field_unit       */
	ACPI_NS_NEWSCOPE,	/* 06 Device           */
	ACPI_NS_NORMAL,		/* 07 Event            */
	ACPI_NS_NEWSCOPE,	/* 08 Method           */
	ACPI_NS_NORMAL,		/* 09 Mutex            */
	ACPI_NS_NORMAL,		/* 10 Region           */
	ACPI_NS_NEWSCOPE,	/* 11 Power            */
	ACPI_NS_NEWSCOPE,	/* 12 Processor        */
	ACPI_NS_NEWSCOPE,	/* 13 Thermal          */
	ACPI_NS_NORMAL,		/* 14 buffer_field     */
	ACPI_NS_NORMAL,		/* 15 ddb_handle       */
	ACPI_NS_NORMAL,		/* 16 Debug Object     */
	ACPI_NS_NORMAL,		/* 17 def_field        */
	ACPI_NS_NORMAL,		/* 18 bank_field       */
	ACPI_NS_NORMAL,		/* 19 index_field      */
	ACPI_NS_NORMAL,		/* 20 Reference        */
	ACPI_NS_NORMAL,		/* 21 Alias            */
	ACPI_NS_NORMAL,		/* 22 method_alias     */
	ACPI_NS_NORMAL,		/* 23 Notify           */
	ACPI_NS_NORMAL,		/* 24 Address Handler  */
	ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,	/* 25 Resource Desc    */
	ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,	/* 26 Resource Field   */
	ACPI_NS_NEWSCOPE,	/* 27 Scope            */
	ACPI_NS_NORMAL,		/* 28 Extra            */
	ACPI_NS_NORMAL,		/* 29 Data             */
	ACPI_NS_NORMAL		/* 30 Invalid          */
};

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_get_region_name
 *
 * PARAMETERS:  Space ID            - ID for the region
 *
 * RETURN:      Decoded region space_id name
 *
 * DESCRIPTION: Translate a Space ID into a name string (Debug only)
 *
 ******************************************************************************/

/* Region type decoding */

const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
	"SystemMemory",		/* 0x00 */
	"SystemIO",		/* 0x01 */
	"PCI_Config",		/* 0x02 */
	"EmbeddedControl",	/* 0x03 */
	"SMBus",		/* 0x04 */
	"SystemCMOS",		/* 0x05 */
	"PCIBARTarget",		/* 0x06 */
	"IPMI",			/* 0x07 */
	"GeneralPurposeIo",	/* 0x08 */
	"GenericSerialBus",	/* 0x09 */
	"PCC"			/* 0x0A */
};

const char *acpi_ut_get_region_name(u8 space_id)
{

	if (space_id >= ACPI_USER_REGION_BEGIN) {
		return ("UserDefinedRegion");
	} else if (space_id == ACPI_ADR_SPACE_DATA_TABLE) {
		return ("DataTable");
	} else if (space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) {
		return ("FunctionalFixedHW");
	} else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
		return ("InvalidSpaceId");
	}

	return (acpi_gbl_region_types[space_id]);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_get_event_name
 *
 * PARAMETERS:  event_id            - Fixed event ID
 *
 * RETURN:      Decoded event ID name
 *
 * DESCRIPTION: Translate a Event ID into a name string (Debug only)
 *
 ******************************************************************************/

/* Event type decoding */

static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
	"PM_Timer",
	"GlobalLock",
	"PowerButton",
	"SleepButton",
	"RealTimeClock",
};

const char *acpi_ut_get_event_name(u32 event_id)
{

	if (event_id > ACPI_EVENT_MAX) {
		return ("InvalidEventID");
	}

	return (acpi_gbl_event_types[event_id]);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_get_type_name
 *
 * PARAMETERS:  type                - An ACPI object type
 *
 * RETURN:      Decoded ACPI object type name
 *
 * DESCRIPTION: Translate a Type ID into a name string (Debug only)
 *
 ******************************************************************************/

/*
 * Elements of acpi_gbl_ns_type_names below must match
 * one-to-one with values of acpi_object_type
 *
 * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
 * when stored in a table it really means that we have thus far seen no
 * evidence to indicate what type is actually going to be stored for this
 & entry.
 */
static const char acpi_gbl_bad_type[] = "UNDEFINED";

/* Printable names of the ACPI object types */

static const char *acpi_gbl_ns_type_names[] = {
	/* 00 */ "Untyped",
	/* 01 */ "Integer",
	/* 02 */ "String",
	/* 03 */ "Buffer",
	/* 04 */ "Package",
	/* 05 */ "FieldUnit",
	/* 06 */ "Device",
	/* 07 */ "Event",
	/* 08 */ "Method",
	/* 09 */ "Mutex",
	/* 10 */ "Region",
	/* 11 */ "Power",
	/* 12 */ "Processor",
	/* 13 */ "Thermal",
	/* 14 */ "BufferField",
	/* 15 */ "DdbHandle",
	/* 16 */ "DebugObject",
	/* 17 */ "RegionField",
	/* 18 */ "BankField",
	/* 19 */ "IndexField",
	/* 20 */ "Reference",
	/* 21 */ "Alias",
	/* 22 */ "MethodAlias",
	/* 23 */ "Notify",
	/* 24 */ "AddrHandler",
	/* 25 */ "ResourceDesc",
	/* 26 */ "ResourceFld",
	/* 27 */ "Scope",
	/* 28 */ "Extra",
	/* 29 */ "Data",
	/* 30 */ "Invalid"
};

const char *acpi_ut_get_type_name(acpi_object_type type)
{

	if (type > ACPI_TYPE_INVALID) {
		return (acpi_gbl_bad_type);
	}

	return (acpi_gbl_ns_type_names[type]);
}

const char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
{
	ACPI_FUNCTION_TRACE(ut_get_object_type_name);

	if (!obj_desc) {
		ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Null Object Descriptor\n"));
		return_STR("[NULL Object Descriptor]");
	}

	/* These descriptor types share a common area */

	if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) &&
	    (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_NAMED)) {
		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
				  "Invalid object descriptor type: 0x%2.2X [%s] (%p)\n",
				  ACPI_GET_DESCRIPTOR_TYPE(obj_desc),
				  acpi_ut_get_descriptor_name(obj_desc),
				  obj_desc));

		return_STR("Invalid object");
	}

	return_STR(acpi_ut_get_type_name(obj_desc->common.type));
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_get_node_name
 *
 * PARAMETERS:  object               - A namespace node
 *
 * RETURN:      ASCII name of the node
 *
 * DESCRIPTION: Validate the node and return the node's ACPI name.
 *
 ******************************************************************************/

const char *acpi_ut_get_node_name(void *object)
{
	struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;

	/* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */

	if (!object) {
		return ("NULL");
	}

	/* Check for Root node */

	if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
		return ("\"\\\" ");
	}

	/* Descriptor must be a namespace node */

	if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
		return ("####");
	}

	/*
	 * Ensure name is valid. The name was validated/repaired when the node
	 * was created, but make sure it has not been corrupted.
	 */
	acpi_ut_repair_name(node->name.ascii);

	/* Return the name */

	return (node->name.ascii);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_get_descriptor_name
 *
 * PARAMETERS:  object               - An ACPI object
 *
 * RETURN:      Decoded name of the descriptor type
 *
 * DESCRIPTION: Validate object and return the descriptor type
 *
 ******************************************************************************/

/* Printable names of object descriptor types */

static const char *acpi_gbl_desc_type_names[] = {
	/* 00 */ "Not a Descriptor",
	/* 01 */ "Cached Object",
	/* 02 */ "State-Generic",
	/* 03 */ "State-Update",
	/* 04 */ "State-Package",
	/* 05 */ "State-Control",
	/* 06 */ "State-RootParseScope",
	/* 07 */ "State-ParseScope",
	/* 08 */ "State-WalkScope",
	/* 09 */ "State-Result",
	/* 10 */ "State-Notify",
	/* 11 */ "State-Thread",
	/* 12 */ "Tree Walk State",
	/* 13 */ "Parse Tree Op",
	/* 14 */ "Operand Object",
	/* 15 */ "Namespace Node"
};

const char *acpi_ut_get_descriptor_name(void *object)
{

	if (!object) {
		return ("NULL OBJECT");
	}

	if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
		return ("Not a Descriptor");
	}

	return (acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE(object)]);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_get_reference_name
 *
 * PARAMETERS:  object               - An ACPI reference object
 *
 * RETURN:      Decoded name of the type of reference
 *
 * DESCRIPTION: Decode a reference object sub-type to a string.
 *
 ******************************************************************************/

/* Printable names of reference object sub-types */

static const char *acpi_gbl_ref_class_names[] = {
	/* 00 */ "Local",
	/* 01 */ "Argument",
	/* 02 */ "RefOf",
	/* 03 */ "Index",
	/* 04 */ "DdbHandle",
	/* 05 */ "Named Object",
	/* 06 */ "Debug"
};

const char *acpi_ut_get_reference_name(union acpi_operand_object *object)
{

	if (!object) {
		return ("NULL Object");
	}

	if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) {
		return ("Not an Operand object");
	}

	if (object->common.type != ACPI_TYPE_LOCAL_REFERENCE) {
		return ("Not a Reference object");
	}

	if (object->reference.class > ACPI_REFCLASS_MAX) {
		return ("Unknown Reference class");
	}

	return (acpi_gbl_ref_class_names[object->reference.class]);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_get_mutex_name
 *
 * PARAMETERS:  mutex_id        - The predefined ID for this mutex.
 *
 * RETURN:      Decoded name of the internal mutex
 *
 * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
 *
 ******************************************************************************/

/* Names for internal mutex objects, used for debug output */

static const char *acpi_gbl_mutex_names[ACPI_NUM_MUTEX] = {
	"ACPI_MTX_Interpreter",
	"ACPI_MTX_Namespace",
	"ACPI_MTX_Tables",
	"ACPI_MTX_Events",
	"ACPI_MTX_Caches",
	"ACPI_MTX_Memory",
};

const char *acpi_ut_get_mutex_name(u32 mutex_id)
{

	if (mutex_id > ACPI_MAX_MUTEX) {
		return ("Invalid Mutex ID");
	}

	return (acpi_gbl_mutex_names[mutex_id]);
}

#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)

/*
 * Strings and procedures used for debug only
 */

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_get_notify_name
 *
 * PARAMETERS:  notify_value    - Value from the Notify() request
 *
 * RETURN:      Decoded name for the notify value
 *
 * DESCRIPTION: Translate a Notify Value to a notify namestring.
 *
 ******************************************************************************/

/* Names for Notify() values, used for debug output */

static const char *acpi_gbl_generic_notify[ACPI_GENERIC_NOTIFY_MAX + 1] = {
	/* 00 */ "Bus Check",
	/* 01 */ "Device Check",
	/* 02 */ "Device Wake",
	/* 03 */ "Eject Request",
	/* 04 */ "Device Check Light",
	/* 05 */ "Frequency Mismatch",
	/* 06 */ "Bus Mode Mismatch",
	/* 07 */ "Power Fault",
	/* 08 */ "Capabilities Check",
	/* 09 */ "Device PLD Check",
	/* 0A */ "Reserved",
	/* 0B */ "System Locality Update",
								/* 0C */ "Reserved (was previously Shutdown Request)",
								/* Reserved in ACPI 6.0 */
	/* 0D */ "System Resource Affinity Update",
								/* 0E */ "Heterogeneous Memory Attributes Update",
								/* ACPI 6.2 */
						/* 0F */ "Error Disconnect Recover"
						/* ACPI 6.3 */
};

static const char *acpi_gbl_device_notify[5] = {
	/* 80 */ "Status Change",
	/* 81 */ "Information Change",
	/* 82 */ "Device-Specific Change",
	/* 83 */ "Device-Specific Change",
	/* 84 */ "Reserved"
};

static const char *acpi_gbl_processor_notify[5] = {
	/* 80 */ "Performance Capability Change",
	/* 81 */ "C-State Change",
	/* 82 */ "Throttling Capability Change",
	/* 83 */ "Guaranteed Change",
	/* 84 */ "Minimum Excursion"
};

static const char *acpi_gbl_thermal_notify[5] = {
	/* 80 */ "Thermal Status Change",
	/* 81 */ "Thermal Trip Point Change",
	/* 82 */ "Thermal Device List Change",
	/* 83 */ "Thermal Relationship Change",
	/* 84 */ "Reserved"
};

const char *acpi_ut_get_notify_name(u32 notify_value, acpi_object_type type)
{

	/* 00 - 0F are "common to all object types" (from ACPI Spec) */

	if (notify_value <= ACPI_GENERIC_NOTIFY_MAX) {
		return (acpi_gbl_generic_notify[notify_value]);
	}

	/* 10 - 7F are reserved */

	if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
		return ("Reserved");
	}

	/* 80 - 84 are per-object-type */

	if (notify_value <= ACPI_SPECIFIC_NOTIFY_MAX) {
		switch (type) {
		case ACPI_TYPE_ANY:
		case ACPI_TYPE_DEVICE:
			return (acpi_gbl_device_notify[notify_value - 0x80]);

		case ACPI_TYPE_PROCESSOR:
			return (acpi_gbl_processor_notify[notify_value - 0x80]);

		case ACPI_TYPE_THERMAL:
			return (acpi_gbl_thermal_notify[notify_value - 0x80]);

		default:
			return ("Target object type does not support notifies");
		}
	}

	/* 84 - BF are device-specific */

	if (notify_value <= ACPI_MAX_DEVICE_SPECIFIC_NOTIFY) {
		return ("Device-Specific");
	}

	/* C0 and above are hardware-specific */

	return ("Hardware-Specific");
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_get_argument_type_name
 *
 * PARAMETERS:  arg_type            - an ARGP_* parser argument type
 *
 * RETURN:      Decoded ARGP_* type
 *
 * DESCRIPTION: Decode an ARGP_* parser type, as defined in the amlcode.h file,
 *              and used in the acopcode.h file. For example, ARGP_TERMARG.
 *              Used for debug only.
 *
 ******************************************************************************/

static const char *acpi_gbl_argument_type[20] = {
	/* 00 */ "Unknown ARGP",
	/* 01 */ "ByteData",
	/* 02 */ "ByteList",
	/* 03 */ "CharList",
	/* 04 */ "DataObject",
	/* 05 */ "DataObjectList",
	/* 06 */ "DWordData",
	/* 07 */ "FieldList",
	/* 08 */ "Name",
	/* 09 */ "NameString",
	/* 0A */ "ObjectList",
	/* 0B */ "PackageLength",
	/* 0C */ "SuperName",
	/* 0D */ "Target",
	/* 0E */ "TermArg",
	/* 0F */ "TermList",
	/* 10 */ "WordData",
	/* 11 */ "QWordData",
	/* 12 */ "SimpleName",
	/* 13 */ "NameOrRef"
};

const char *acpi_ut_get_argument_type_name(u32 arg_type)
{

	if (arg_type > ARGP_MAX) {
		return ("Unknown ARGP");
	}

	return (acpi_gbl_argument_type[arg_type]);
}

#endif

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_valid_object_type
 *
 * PARAMETERS:  type            - Object type to be validated
 *
 * RETURN:      TRUE if valid object type, FALSE otherwise
 *
 * DESCRIPTION: Validate an object type
 *
 ******************************************************************************/

u8 acpi_ut_valid_object_type(acpi_object_type type)
{

	if (type > ACPI_TYPE_LOCAL_MAX) {

		/* Note: Assumes all TYPEs are contiguous (external/local) */

		return (FALSE);
	}

	return (TRUE);
}