summaryrefslogtreecommitdiffstats
path: root/drivers/acpi/acpica/utdebug.c
blob: 1a67b3944b3b8db426fb3edf7b878153785b7631 (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
/******************************************************************************
 *
 * Module Name: utdebug - Debug print/trace routines
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2013, Intel Corp.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */

#define EXPORT_ACPI_INTERFACES

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

#define _COMPONENT          ACPI_UTILITIES
ACPI_MODULE_NAME("utdebug")

#ifdef ACPI_DEBUG_OUTPUT
static acpi_thread_id acpi_gbl_prev_thread_id = (acpi_thread_id) 0xFFFFFFFF;
static char *acpi_gbl_fn_entry_str = "----Entry";
static char *acpi_gbl_fn_exit_str = "----Exit-";

/* Local prototypes */

static const char *acpi_ut_trim_function_name(const char *function_name);

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_init_stack_ptr_trace
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Save the current CPU stack pointer at subsystem startup
 *
 ******************************************************************************/

void acpi_ut_init_stack_ptr_trace(void)
{
	acpi_size current_sp;

	acpi_gbl_entry_stack_pointer = &current_sp;
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_track_stack_ptr
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Save the current CPU stack pointer
 *
 ******************************************************************************/

void acpi_ut_track_stack_ptr(void)
{
	acpi_size current_sp;

	if (&current_sp < acpi_gbl_lowest_stack_pointer) {
		acpi_gbl_lowest_stack_pointer = &current_sp;
	}

	if (acpi_gbl_nesting_level > acpi_gbl_deepest_nesting) {
		acpi_gbl_deepest_nesting = acpi_gbl_nesting_level;
	}
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_trim_function_name
 *
 * PARAMETERS:  function_name       - Ascii string containing a procedure name
 *
 * RETURN:      Updated pointer to the function name
 *
 * DESCRIPTION: Remove the "Acpi" prefix from the function name, if present.
 *              This allows compiler macros such as __FUNCTION__ to be used
 *              with no change to the debug output.
 *
 ******************************************************************************/

static const char *acpi_ut_trim_function_name(const char *function_name)
{

	/* All Function names are longer than 4 chars, check is safe */

	if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_MIXED) {

		/* This is the case where the original source has not been modified */

		return (function_name + 4);
	}

	if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_LOWER) {

		/* This is the case where the source has been 'linuxized' */

		return (function_name + 5);
	}

	return (function_name);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_debug_print
 *
 * PARAMETERS:  requested_debug_level - Requested debug print level
 *              line_number         - Caller's line number (for error output)
 *              function_name       - Caller's procedure name
 *              module_name         - Caller's module name
 *              component_id        - Caller's component ID
 *              format              - Printf format field
 *              ...                 - Optional printf arguments
 *
 * RETURN:      None
 *
 * DESCRIPTION: Print error message with prefix consisting of the module name,
 *              line number, and component ID.
 *
 ******************************************************************************/

void ACPI_INTERNAL_VAR_XFACE
acpi_debug_print(u32 requested_debug_level,
		 u32 line_number,
		 const char *function_name,
		 const char *module_name,
		 u32 component_id, const char *format, ...)
{
	acpi_thread_id thread_id;
	va_list args;

	/* Check if debug output enabled */

	if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) {
		return;
	}

	/*
	 * Thread tracking and context switch notification
	 */
	thread_id = acpi_os_get_thread_id();
	if (thread_id != acpi_gbl_prev_thread_id) {
		if (ACPI_LV_THREADS & acpi_dbg_level) {
			acpi_os_printf
			    ("\n**** Context Switch from TID %u to TID %u ****\n\n",
			     (u32)acpi_gbl_prev_thread_id, (u32)thread_id);
		}

		acpi_gbl_prev_thread_id = thread_id;
	}

	/*
	 * Display the module name, current line number, thread ID (if requested),
	 * current procedure nesting level, and the current procedure name
	 */
	acpi_os_printf("%9s-%04ld ", module_name, line_number);

	if (ACPI_LV_THREADS & acpi_dbg_level) {
		acpi_os_printf("[%u] ", (u32)thread_id);
	}

	acpi_os_printf("[%02ld] %-22.22s: ",
		       acpi_gbl_nesting_level,
		       acpi_ut_trim_function_name(function_name));

	va_start(args, format);
	acpi_os_vprintf(format, args);
	va_end(args);
}

ACPI_EXPORT_SYMBOL(acpi_debug_print)

/*******************************************************************************
 *
 * FUNCTION:    acpi_debug_print_raw
 *
 * PARAMETERS:  requested_debug_level - Requested debug print level
 *              line_number         - Caller's line number
 *              function_name       - Caller's procedure name
 *              module_name         - Caller's module name
 *              component_id        - Caller's component ID
 *              format              - Printf format field
 *              ...                 - Optional printf arguments
 *
 * RETURN:      None
 *
 * DESCRIPTION: Print message with no headers. Has same interface as
 *              debug_print so that the same macros can be used.
 *
 ******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_debug_print_raw(u32 requested_debug_level,
		     u32 line_number,
		     const char *function_name,
		     const char *module_name,
		     u32 component_id, const char *format, ...)
{
	va_list args;

	/* Check if debug output enabled */

	if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) {
		return;
	}

	va_start(args, format);
	acpi_os_vprintf(format, args);
	va_end(args);
}

ACPI_EXPORT_SYMBOL(acpi_debug_print_raw)

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_trace
 *
 * PARAMETERS:  line_number         - Caller's line number
 *              function_name       - Caller's procedure name
 *              module_name         - Caller's module name
 *              component_id        - Caller's component ID
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in debug_level
 *
 ******************************************************************************/
void
acpi_ut_trace(u32 line_number,
	      const char *function_name,
	      const char *module_name, u32 component_id)
{

	acpi_gbl_nesting_level++;
	acpi_ut_track_stack_ptr();

	/* Check if enabled up-front for performance */

	if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
		acpi_debug_print(ACPI_LV_FUNCTIONS,
				 line_number, function_name, module_name,
				 component_id, "%s\n", acpi_gbl_fn_entry_str);
	}
}

ACPI_EXPORT_SYMBOL(acpi_ut_trace)

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_trace_ptr
 *
 * PARAMETERS:  line_number         - Caller's line number
 *              function_name       - Caller's procedure name
 *              module_name         - Caller's module name
 *              component_id        - Caller's component ID
 *              pointer             - Pointer to display
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in debug_level
 *
 ******************************************************************************/
void
acpi_ut_trace_ptr(u32 line_number,
		  const char *function_name,
		  const char *module_name, u32 component_id, void *pointer)
{

	acpi_gbl_nesting_level++;
	acpi_ut_track_stack_ptr();

	/* Check if enabled up-front for performance */

	if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
		acpi_debug_print(ACPI_LV_FUNCTIONS,
				 line_number, function_name, module_name,
				 component_id, "%s %p\n", acpi_gbl_fn_entry_str,
				 pointer);
	}
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_trace_str
 *
 * PARAMETERS:  line_number         - Caller's line number
 *              function_name       - Caller's procedure name
 *              module_name         - Caller's module name
 *              component_id        - Caller's component ID
 *              string              - Additional string to display
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in debug_level
 *
 ******************************************************************************/

void
acpi_ut_trace_str(u32 line_number,
		  const char *function_name,
		  const char *module_name, u32 component_id, char *string)
{

	acpi_gbl_nesting_level++;
	acpi_ut_track_stack_ptr();

	/* Check if enabled up-front for performance */

	if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
		acpi_debug_print(ACPI_LV_FUNCTIONS,
				 line_number, function_name, module_name,
				 component_id, "%s %s\n", acpi_gbl_fn_entry_str,
				 string);
	}
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_trace_u32
 *
 * PARAMETERS:  line_number         - Caller's line number
 *              function_name       - Caller's procedure name
 *              module_name         - Caller's module name
 *              component_id        - Caller's component ID
 *              integer             - Integer to display
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in debug_level
 *
 ******************************************************************************/

void
acpi_ut_trace_u32(u32 line_number,
		  const char *function_name,
		  const char *module_name, u32 component_id, u32 integer)
{

	acpi_gbl_nesting_level++;
	acpi_ut_track_stack_ptr();

	/* Check if enabled up-front for performance */

	if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
		acpi_debug_print(ACPI_LV_FUNCTIONS,
				 line_number, function_name, module_name,
				 component_id, "%s %08X\n",
				 acpi_gbl_fn_entry_str, integer);
	}
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_exit
 *
 * PARAMETERS:  line_number         - Caller's line number
 *              function_name       - Caller's procedure name
 *              module_name         - Caller's module name
 *              component_id        - Caller's component ID
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in debug_level
 *
 ******************************************************************************/

void
acpi_ut_exit(u32 line_number,
	     const char *function_name,
	     const char *module_name, u32 component_id)
{

	/* Check if enabled up-front for performance */

	if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
		acpi_debug_print(ACPI_LV_FUNCTIONS,
				 line_number, function_name, module_name,
				 component_id, "%s\n", acpi_gbl_fn_exit_str);
	}

	acpi_gbl_nesting_level--;
}

ACPI_EXPORT_SYMBOL(acpi_ut_exit)

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_status_exit
 *
 * PARAMETERS:  line_number         - Caller's line number
 *              function_name       - Caller's procedure name
 *              module_name         - Caller's module name
 *              component_id        - Caller's component ID
 *              status              - Exit status code
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in debug_level. Prints exit status also.
 *
 ******************************************************************************/
void
acpi_ut_status_exit(u32 line_number,
		    const char *function_name,
		    const char *module_name,
		    u32 component_id, acpi_status status)
{

	/* Check if enabled up-front for performance */

	if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
		if (ACPI_SUCCESS(status)) {
			acpi_debug_print(ACPI_LV_FUNCTIONS,
					 line_number, function_name,
					 module_name, component_id, "%s %s\n",
					 acpi_gbl_fn_exit_str,
					 acpi_format_exception(status));
		} else {
			acpi_debug_print(ACPI_LV_FUNCTIONS,
					 line_number, function_name,
					 module_name, component_id,
					 "%s ****Exception****: %s\n",
					 acpi_gbl_fn_exit_str,
					 acpi_format_exception(status));
		}
	}

	acpi_gbl_nesting_level--;
}

ACPI_EXPORT_SYMBOL(acpi_ut_status_exit)

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_value_exit
 *
 * PARAMETERS:  line_number         - Caller's line number
 *              function_name       - Caller's procedure name
 *              module_name         - Caller's module name
 *              component_id        - Caller's component ID
 *              value               - Value to be printed with exit msg
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in debug_level. Prints exit value also.
 *
 ******************************************************************************/
void
acpi_ut_value_exit(u32 line_number,
		   const char *function_name,
		   const char *module_name, u32 component_id, u64 value)
{

	/* Check if enabled up-front for performance */

	if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
		acpi_debug_print(ACPI_LV_FUNCTIONS,
				 line_number, function_name, module_name,
				 component_id, "%s %8.8X%8.8X\n",
				 acpi_gbl_fn_exit_str,
				 ACPI_FORMAT_UINT64(value));
	}

	acpi_gbl_nesting_level--;
}

ACPI_EXPORT_SYMBOL(acpi_ut_value_exit)

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_ptr_exit
 *
 * PARAMETERS:  line_number         - Caller's line number
 *              function_name       - Caller's procedure name
 *              module_name         - Caller's module name
 *              component_id        - Caller's component ID
 *              ptr                 - Pointer to display
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in debug_level. Prints exit value also.
 *
 ******************************************************************************/
void
acpi_ut_ptr_exit(u32 line_number,
		 const char *function_name,
		 const char *module_name, u32 component_id, u8 *ptr)
{

	/* Check if enabled up-front for performance */

	if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
		acpi_debug_print(ACPI_LV_FUNCTIONS,
				 line_number, function_name, module_name,
				 component_id, "%s %p\n", acpi_gbl_fn_exit_str,
				 ptr);
	}

	acpi_gbl_nesting_level--;
}

#endif