summaryrefslogtreecommitdiff
path: root/drivers/accel/habanalabs/common/state_dump.c
blob: 3a9931f24259928ad5748fe4a9d9f3d2b78ca1b0 (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
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
// SPDX-License-Identifier: GPL-2.0

/*
 * Copyright 2021 HabanaLabs, Ltd.
 * All Rights Reserved.
 */

#include <linux/vmalloc.h>
#include <uapi/drm/habanalabs_accel.h>
#include "habanalabs.h"

/**
 * hl_format_as_binary - helper function, format an integer as binary
 *                       using supplied scratch buffer
 * @buf: the buffer to use
 * @buf_len: buffer capacity
 * @n: number to format
 *
 * Returns pointer to buffer
 */
char *hl_format_as_binary(char *buf, size_t buf_len, u32 n)
{
	int i;
	u32 bit;
	bool leading0 = true;
	char *wrptr = buf;

	if (buf_len > 0 && buf_len < 3) {
		*wrptr = '\0';
		return buf;
	}

	wrptr[0] = '0';
	wrptr[1] = 'b';
	wrptr += 2;
	/* Remove 3 characters from length for '0b' and '\0' termination */
	buf_len -= 3;

	for (i = 0; i < sizeof(n) * BITS_PER_BYTE && buf_len; ++i, n <<= 1) {
		/* Writing bit calculation in one line would cause a false
		 * positive static code analysis error, so splitting.
		 */
		bit = n & (1 << (sizeof(n) * BITS_PER_BYTE - 1));
		bit = !!bit;
		leading0 &= !bit;
		if (!leading0) {
			*wrptr = '0' + bit;
			++wrptr;
		}
	}

	*wrptr = '\0';

	return buf;
}

/**
 * resize_to_fit - helper function, resize buffer to fit given amount of data
 * @buf: destination buffer double pointer
 * @size: pointer to the size container
 * @desired_size: size the buffer must contain
 *
 * Returns 0 on success or error code on failure.
 * On success, the size of buffer is at least desired_size. Buffer is allocated
 * via vmalloc and must be freed with vfree.
 */
static int resize_to_fit(char **buf, size_t *size, size_t desired_size)
{
	char *resized_buf;
	size_t new_size;

	if (*size >= desired_size)
		return 0;

	/* Not enough space to print all, have to resize */
	new_size = max_t(size_t, PAGE_SIZE, round_up(desired_size, PAGE_SIZE));
	resized_buf = vmalloc(new_size);
	if (!resized_buf)
		return -ENOMEM;
	memcpy(resized_buf, *buf, *size);
	vfree(*buf);
	*buf = resized_buf;
	*size = new_size;

	return 1;
}

/**
 * hl_snprintf_resize() - print formatted data to buffer, resize as needed
 * @buf: buffer double pointer, to be written to and resized, must be either
 *       NULL or allocated with vmalloc.
 * @size: current size of the buffer
 * @offset: current offset to write to
 * @format: format of the data
 *
 * This function will write formatted data into the buffer. If buffer is not
 * large enough, it will be resized using vmalloc. Size may be modified if the
 * buffer was resized, offset will be advanced by the number of bytes written
 * not including the terminating character
 *
 * Returns 0 on success or error code on failure
 *
 * Note that the buffer has to be manually released using vfree.
 */
int hl_snprintf_resize(char **buf, size_t *size, size_t *offset,
			   const char *format, ...)
{
	va_list args;
	size_t length;
	int rc;

	if (*buf == NULL && (*size != 0 || *offset != 0))
		return -EINVAL;

	va_start(args, format);
	length = vsnprintf(*buf + *offset, *size - *offset, format, args);
	va_end(args);

	rc = resize_to_fit(buf, size, *offset + length + 1);
	if (rc < 0)
		return rc;
	else if (rc > 0) {
		/* Resize was needed, write again */
		va_start(args, format);
		length = vsnprintf(*buf + *offset, *size - *offset, format,
				   args);
		va_end(args);
	}

	*offset += length;

	return 0;
}

/**
 * hl_sync_engine_to_string - convert engine type enum to string literal
 * @engine_type: engine type (TPC/MME/DMA)
 *
 * Return the resolved string literal
 */
const char *hl_sync_engine_to_string(enum hl_sync_engine_type engine_type)
{
	switch (engine_type) {
	case ENGINE_DMA:
		return "DMA";
	case ENGINE_MME:
		return "MME";
	case ENGINE_TPC:
		return "TPC";
	}
	return "Invalid Engine Type";
}

/**
 * hl_print_resize_sync_engine - helper function, format engine name and ID
 * using hl_snprintf_resize
 * @buf: destination buffer double pointer to be used with hl_snprintf_resize
 * @size: pointer to the size container
 * @offset: pointer to the offset container
 * @engine_type: engine type (TPC/MME/DMA)
 * @engine_id: engine numerical id
 *
 * Returns 0 on success or error code on failure
 */
static int hl_print_resize_sync_engine(char **buf, size_t *size, size_t *offset,
				enum hl_sync_engine_type engine_type,
				u32 engine_id)
{
	return hl_snprintf_resize(buf, size, offset, "%s%u",
			hl_sync_engine_to_string(engine_type), engine_id);
}

/**
 * hl_state_dump_get_sync_name - transform sync object id to name if available
 * @hdev: pointer to the device
 * @sync_id: sync object id
 *
 * Returns a name literal or NULL if not resolved.
 * Note: returning NULL shall not be considered as a failure, as not all
 * sync objects are named.
 */
const char *hl_state_dump_get_sync_name(struct hl_device *hdev, u32 sync_id)
{
	struct hl_state_dump_specs *sds = &hdev->state_dump_specs;
	struct hl_hw_obj_name_entry *entry;

	hash_for_each_possible(sds->so_id_to_str_tb, entry,
				node, sync_id)
		if (sync_id == entry->id)
			return entry->name;

	return NULL;
}

/**
 * hl_state_dump_get_monitor_name - transform monitor object dump to monitor
 * name if available
 * @hdev: pointer to the device
 * @mon: monitor state dump
 *
 * Returns a name literal or NULL if not resolved.
 * Note: returning NULL shall not be considered as a failure, as not all
 * monitors are named.
 */
const char *hl_state_dump_get_monitor_name(struct hl_device *hdev,
					struct hl_mon_state_dump *mon)
{
	struct hl_state_dump_specs *sds = &hdev->state_dump_specs;
	struct hl_hw_obj_name_entry *entry;

	hash_for_each_possible(sds->monitor_id_to_str_tb,
				entry, node, mon->id)
		if (mon->id == entry->id)
			return entry->name;

	return NULL;
}

/**
 * hl_state_dump_free_sync_to_engine_map - free sync object to engine map
 * @map: sync object to engine map
 *
 * Note: generic free implementation, the allocation is implemented per ASIC.
 */
void hl_state_dump_free_sync_to_engine_map(struct hl_sync_to_engine_map *map)
{
	struct hl_sync_to_engine_map_entry *entry;
	struct hlist_node *tmp_node;
	int i;

	hash_for_each_safe(map->tb, i, tmp_node, entry, node) {
		hash_del(&entry->node);
		kfree(entry);
	}
}

/**
 * hl_state_dump_get_sync_to_engine - transform sync_id to
 * hl_sync_to_engine_map_entry if available for current id
 * @map: sync object to engine map
 * @sync_id: sync object id
 *
 * Returns the translation entry if found or NULL if not.
 * Note, returned NULL shall not be considered as a failure as the map
 * does not cover all possible, it is a best effort sync ids.
 */
static struct hl_sync_to_engine_map_entry *
hl_state_dump_get_sync_to_engine(struct hl_sync_to_engine_map *map, u32 sync_id)
{
	struct hl_sync_to_engine_map_entry *entry;

	hash_for_each_possible(map->tb, entry, node, sync_id)
		if (entry->sync_id == sync_id)
			return entry;
	return NULL;
}

/**
 * hl_state_dump_read_sync_objects - read sync objects array
 * @hdev: pointer to the device
 * @index: sync manager block index starting with E_N
 *
 * Returns array of size SP_SYNC_OBJ_AMOUNT on success or NULL on failure
 */
static u32 *hl_state_dump_read_sync_objects(struct hl_device *hdev, u32 index)
{
	struct hl_state_dump_specs *sds = &hdev->state_dump_specs;
	u32 *sync_objects;
	s64 base_addr; /* Base addr can be negative */
	int i;

	base_addr = sds->props[SP_SYNC_OBJ_BASE_ADDR] +
			sds->props[SP_NEXT_SYNC_OBJ_ADDR] * index;

	sync_objects = vmalloc(sds->props[SP_SYNC_OBJ_AMOUNT] * sizeof(u32));
	if (!sync_objects)
		return NULL;

	for (i = 0; i < sds->props[SP_SYNC_OBJ_AMOUNT]; ++i)
		sync_objects[i] = RREG32(base_addr + i * sizeof(u32));

	return sync_objects;
}

/**
 * hl_state_dump_free_sync_objects - free sync objects array allocated by
 * hl_state_dump_read_sync_objects
 * @sync_objects: sync objects array
 */
static void hl_state_dump_free_sync_objects(u32 *sync_objects)
{
	vfree(sync_objects);
}


/**
 * hl_state_dump_print_syncs_single_block - print active sync objects on a
 * single block
 * @hdev: pointer to the device
 * @index: sync manager block index starting with E_N
 * @buf: destination buffer double pointer to be used with hl_snprintf_resize
 * @size: pointer to the size container
 * @offset: pointer to the offset container
 * @map: sync engines names map
 *
 * Returns 0 on success or error code on failure
 */
static int
hl_state_dump_print_syncs_single_block(struct hl_device *hdev, u32 index,
				char **buf, size_t *size, size_t *offset,
				struct hl_sync_to_engine_map *map)
{
	struct hl_state_dump_specs *sds = &hdev->state_dump_specs;
	const char *sync_name;
	u32 *sync_objects = NULL;
	int rc = 0, i;

	if (sds->sync_namager_names) {
		rc = hl_snprintf_resize(
			buf, size, offset, "%s\n",
			sds->sync_namager_names[index]);
		if (rc)
			goto out;
	}

	sync_objects = hl_state_dump_read_sync_objects(hdev, index);
	if (!sync_objects) {
		rc = -ENOMEM;
		goto out;
	}

	for (i = 0; i < sds->props[SP_SYNC_OBJ_AMOUNT]; ++i) {
		struct hl_sync_to_engine_map_entry *entry;
		u64 sync_object_addr;

		if (!sync_objects[i])
			continue;

		sync_object_addr = sds->props[SP_SYNC_OBJ_BASE_ADDR] +
				sds->props[SP_NEXT_SYNC_OBJ_ADDR] * index +
				i * sizeof(u32);

		rc = hl_snprintf_resize(buf, size, offset, "sync id: %u", i);
		if (rc)
			goto free_sync_objects;
		sync_name = hl_state_dump_get_sync_name(hdev, i);
		if (sync_name) {
			rc = hl_snprintf_resize(buf, size, offset, " %s",
						sync_name);
			if (rc)
				goto free_sync_objects;
		}
		rc = hl_snprintf_resize(buf, size, offset, ", value: %u",
					sync_objects[i]);
		if (rc)
			goto free_sync_objects;

		/* Append engine string */
		entry = hl_state_dump_get_sync_to_engine(map,
			(u32)sync_object_addr);
		if (entry) {
			rc = hl_snprintf_resize(buf, size, offset,
						", Engine: ");
			if (rc)
				goto free_sync_objects;
			rc = hl_print_resize_sync_engine(buf, size, offset,
						entry->engine_type,
						entry->engine_id);
			if (rc)
				goto free_sync_objects;
		}

		rc = hl_snprintf_resize(buf, size, offset, "\n");
		if (rc)
			goto free_sync_objects;
	}

free_sync_objects:
	hl_state_dump_free_sync_objects(sync_objects);
out:
	return rc;
}

/**
 * hl_state_dump_print_syncs - print active sync objects
 * @hdev: pointer to the device
 * @buf: destination buffer double pointer to be used with hl_snprintf_resize
 * @size: pointer to the size container
 * @offset: pointer to the offset container
 *
 * Returns 0 on success or error code on failure
 */
static int hl_state_dump_print_syncs(struct hl_device *hdev,
					char **buf, size_t *size,
					size_t *offset)

{
	struct hl_state_dump_specs *sds = &hdev->state_dump_specs;
	struct hl_sync_to_engine_map *map;
	u32 index;
	int rc = 0;

	map = kzalloc(sizeof(*map), GFP_KERNEL);
	if (!map)
		return -ENOMEM;

	rc = sds->funcs.gen_sync_to_engine_map(hdev, map);
	if (rc)
		goto free_map_mem;

	rc = hl_snprintf_resize(buf, size, offset, "Non zero sync objects:\n");
	if (rc)
		goto out;

	if (sds->sync_namager_names) {
		for (index = 0; sds->sync_namager_names[index]; ++index) {
			rc = hl_state_dump_print_syncs_single_block(
				hdev, index, buf, size, offset, map);
			if (rc)
				goto out;
		}
	} else {
		for (index = 0; index < sds->props[SP_NUM_CORES]; ++index) {
			rc = hl_state_dump_print_syncs_single_block(
				hdev, index, buf, size, offset, map);
			if (rc)
				goto out;
		}
	}

out:
	hl_state_dump_free_sync_to_engine_map(map);
free_map_mem:
	kfree(map);

	return rc;
}

/**
 * hl_state_dump_alloc_read_sm_block_monitors - read monitors for a specific
 * block
 * @hdev: pointer to the device
 * @index: sync manager block index starting with E_N
 *
 * Returns an array of monitor data of size SP_MONITORS_AMOUNT or NULL
 * on error
 */
static struct hl_mon_state_dump *
hl_state_dump_alloc_read_sm_block_monitors(struct hl_device *hdev, u32 index)
{
	struct hl_state_dump_specs *sds = &hdev->state_dump_specs;
	struct hl_mon_state_dump *monitors;
	s64 base_addr; /* Base addr can be negative */
	int i;

	monitors = vmalloc(sds->props[SP_MONITORS_AMOUNT] *
			   sizeof(struct hl_mon_state_dump));
	if (!monitors)
		return NULL;

	base_addr = sds->props[SP_NEXT_SYNC_OBJ_ADDR] * index;

	for (i = 0; i < sds->props[SP_MONITORS_AMOUNT]; ++i) {
		monitors[i].id = i;
		monitors[i].wr_addr_low =
			RREG32(base_addr + sds->props[SP_MON_OBJ_WR_ADDR_LOW] +
				i * sizeof(u32));

		monitors[i].wr_addr_high =
			RREG32(base_addr + sds->props[SP_MON_OBJ_WR_ADDR_HIGH] +
				i * sizeof(u32));

		monitors[i].wr_data =
			RREG32(base_addr + sds->props[SP_MON_OBJ_WR_DATA] +
				i * sizeof(u32));

		monitors[i].arm_data =
			RREG32(base_addr + sds->props[SP_MON_OBJ_ARM_DATA] +
				i * sizeof(u32));

		monitors[i].status =
			RREG32(base_addr + sds->props[SP_MON_OBJ_STATUS] +
				i * sizeof(u32));
	}

	return monitors;
}

/**
 * hl_state_dump_free_monitors - free the monitors structure
 * @monitors: monitors array created with
 *            hl_state_dump_alloc_read_sm_block_monitors
 */
static void hl_state_dump_free_monitors(struct hl_mon_state_dump *monitors)
{
	vfree(monitors);
}

/**
 * hl_state_dump_print_monitors_single_block - print active monitors on a
 * single block
 * @hdev: pointer to the device
 * @index: sync manager block index starting with E_N
 * @buf: destination buffer double pointer to be used with hl_snprintf_resize
 * @size: pointer to the size container
 * @offset: pointer to the offset container
 *
 * Returns 0 on success or error code on failure
 */
static int hl_state_dump_print_monitors_single_block(struct hl_device *hdev,
						u32 index,
						char **buf, size_t *size,
						size_t *offset)
{
	struct hl_state_dump_specs *sds = &hdev->state_dump_specs;
	struct hl_mon_state_dump *monitors = NULL;
	int rc = 0, i;

	if (sds->sync_namager_names) {
		rc = hl_snprintf_resize(
			buf, size, offset, "%s\n",
			sds->sync_namager_names[index]);
		if (rc)
			goto out;
	}

	monitors = hl_state_dump_alloc_read_sm_block_monitors(hdev, index);
	if (!monitors) {
		rc = -ENOMEM;
		goto out;
	}

	for (i = 0; i < sds->props[SP_MONITORS_AMOUNT]; ++i) {
		if (!(sds->funcs.monitor_valid(&monitors[i])))
			continue;

		/* Monitor is valid, dump it */
		rc = sds->funcs.print_single_monitor(buf, size, offset, hdev,
							&monitors[i]);
		if (rc)
			goto free_monitors;

		hl_snprintf_resize(buf, size, offset, "\n");
	}

free_monitors:
	hl_state_dump_free_monitors(monitors);
out:
	return rc;
}

/**
 * hl_state_dump_print_monitors - print active monitors
 * @hdev: pointer to the device
 * @buf: destination buffer double pointer to be used with hl_snprintf_resize
 * @size: pointer to the size container
 * @offset: pointer to the offset container
 *
 * Returns 0 on success or error code on failure
 */
static int hl_state_dump_print_monitors(struct hl_device *hdev,
					char **buf, size_t *size,
					size_t *offset)
{
	struct hl_state_dump_specs *sds = &hdev->state_dump_specs;
	u32 index;
	int rc = 0;

	rc = hl_snprintf_resize(buf, size, offset,
		"Valid (armed) monitor objects:\n");
	if (rc)
		goto out;

	if (sds->sync_namager_names) {
		for (index = 0; sds->sync_namager_names[index]; ++index) {
			rc = hl_state_dump_print_monitors_single_block(
				hdev, index, buf, size, offset);
			if (rc)
				goto out;
		}
	} else {
		for (index = 0; index < sds->props[SP_NUM_CORES]; ++index) {
			rc = hl_state_dump_print_monitors_single_block(
				hdev, index, buf, size, offset);
			if (rc)
				goto out;
		}
	}

out:
	return rc;
}

/**
 * hl_state_dump_print_engine_fences - print active fences for a specific
 * engine
 * @hdev: pointer to the device
 * @engine_type: engine type to use
 * @buf: destination buffer double pointer to be used with hl_snprintf_resize
 * @size: pointer to the size container
 * @offset: pointer to the offset container
 */
static int
hl_state_dump_print_engine_fences(struct hl_device *hdev,
				  enum hl_sync_engine_type engine_type,
				  char **buf, size_t *size, size_t *offset)
{
	struct hl_state_dump_specs *sds = &hdev->state_dump_specs;
	int rc = 0, i, n_fences;
	u64 base_addr, next_fence;

	switch (engine_type) {
	case ENGINE_TPC:
		n_fences = sds->props[SP_NUM_OF_TPC_ENGINES];
		base_addr = sds->props[SP_TPC0_CMDQ];
		next_fence = sds->props[SP_NEXT_TPC];
		break;
	case ENGINE_MME:
		n_fences = sds->props[SP_NUM_OF_MME_ENGINES];
		base_addr = sds->props[SP_MME_CMDQ];
		next_fence = sds->props[SP_NEXT_MME];
		break;
	case ENGINE_DMA:
		n_fences = sds->props[SP_NUM_OF_DMA_ENGINES];
		base_addr = sds->props[SP_DMA_CMDQ];
		next_fence = sds->props[SP_DMA_QUEUES_OFFSET];
		break;
	default:
		return -EINVAL;
	}
	for (i = 0; i < n_fences; ++i) {
		rc = sds->funcs.print_fences_single_engine(
			hdev,
			base_addr + next_fence * i +
				sds->props[SP_FENCE0_CNT_OFFSET],
			base_addr + next_fence * i +
				sds->props[SP_CP_STS_OFFSET],
			engine_type, i, buf, size, offset);
		if (rc)
			goto out;
	}
out:
	return rc;
}

/**
 * hl_state_dump_print_fences - print active fences
 * @hdev: pointer to the device
 * @buf: destination buffer double pointer to be used with hl_snprintf_resize
 * @size: pointer to the size container
 * @offset: pointer to the offset container
 */
static int hl_state_dump_print_fences(struct hl_device *hdev, char **buf,
				      size_t *size, size_t *offset)
{
	int rc = 0;

	rc = hl_snprintf_resize(buf, size, offset, "Valid (armed) fences:\n");
	if (rc)
		goto out;

	rc = hl_state_dump_print_engine_fences(hdev, ENGINE_TPC, buf, size, offset);
	if (rc)
		goto out;

	rc = hl_state_dump_print_engine_fences(hdev, ENGINE_MME, buf, size, offset);
	if (rc)
		goto out;

	rc = hl_state_dump_print_engine_fences(hdev, ENGINE_DMA, buf, size, offset);
	if (rc)
		goto out;

out:
	return rc;
}

/**
 * hl_state_dump() - dump system state
 * @hdev: pointer to device structure
 */
int hl_state_dump(struct hl_device *hdev)
{
	char *buf = NULL;
	size_t offset = 0, size = 0;
	int rc;

	rc = hl_snprintf_resize(&buf, &size, &offset,
				"Timestamp taken on: %llu\n\n",
				ktime_to_ns(ktime_get()));
	if (rc)
		goto err;

	rc = hl_state_dump_print_syncs(hdev, &buf, &size, &offset);
	if (rc)
		goto err;

	hl_snprintf_resize(&buf, &size, &offset, "\n");

	rc = hl_state_dump_print_monitors(hdev, &buf, &size, &offset);
	if (rc)
		goto err;

	hl_snprintf_resize(&buf, &size, &offset, "\n");

	rc = hl_state_dump_print_fences(hdev, &buf, &size, &offset);
	if (rc)
		goto err;

	hl_snprintf_resize(&buf, &size, &offset, "\n");

	hl_debugfs_set_state_dump(hdev, buf, size);

	return 0;
err:
	vfree(buf);
	return rc;
}