summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/xe/xe_exec_queue.c
blob: 7f28b7fc68d58d1a57f21a708450cf26ebd2972f (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
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
// SPDX-License-Identifier: MIT
/*
 * Copyright © 2021 Intel Corporation
 */

#include "xe_exec_queue.h"

#include <linux/nospec.h>

#include <drm/drm_device.h>
#include <drm/drm_file.h>
#include <uapi/drm/xe_drm.h>

#include "xe_device.h"
#include "xe_gt.h"
#include "xe_hw_engine_class_sysfs.h"
#include "xe_hw_engine_group.h"
#include "xe_hw_fence.h"
#include "xe_lrc.h"
#include "xe_macros.h"
#include "xe_migrate.h"
#include "xe_pm.h"
#include "xe_ring_ops_types.h"
#include "xe_trace.h"
#include "xe_vm.h"

enum xe_exec_queue_sched_prop {
	XE_EXEC_QUEUE_JOB_TIMEOUT = 0,
	XE_EXEC_QUEUE_TIMESLICE = 1,
	XE_EXEC_QUEUE_PREEMPT_TIMEOUT = 2,
	XE_EXEC_QUEUE_SCHED_PROP_MAX = 3,
};

static int exec_queue_user_extensions(struct xe_device *xe, struct xe_exec_queue *q,
				      u64 extensions, int ext_number);

static void __xe_exec_queue_free(struct xe_exec_queue *q)
{
	if (q->vm)
		xe_vm_put(q->vm);

	if (q->xef)
		xe_file_put(q->xef);

	kfree(q);
}

static struct xe_exec_queue *__xe_exec_queue_alloc(struct xe_device *xe,
						   struct xe_vm *vm,
						   u32 logical_mask,
						   u16 width, struct xe_hw_engine *hwe,
						   u32 flags, u64 extensions)
{
	struct xe_exec_queue *q;
	struct xe_gt *gt = hwe->gt;
	int err;

	/* only kernel queues can be permanent */
	XE_WARN_ON((flags & EXEC_QUEUE_FLAG_PERMANENT) && !(flags & EXEC_QUEUE_FLAG_KERNEL));

	q = kzalloc(struct_size(q, lrc, width), GFP_KERNEL);
	if (!q)
		return ERR_PTR(-ENOMEM);

	kref_init(&q->refcount);
	q->flags = flags;
	q->hwe = hwe;
	q->gt = gt;
	q->class = hwe->class;
	q->width = width;
	q->logical_mask = logical_mask;
	q->fence_irq = &gt->fence_irq[hwe->class];
	q->ring_ops = gt->ring_ops[hwe->class];
	q->ops = gt->exec_queue_ops;
	INIT_LIST_HEAD(&q->lr.link);
	INIT_LIST_HEAD(&q->multi_gt_link);
	INIT_LIST_HEAD(&q->hw_engine_group_link);

	q->sched_props.timeslice_us = hwe->eclass->sched_props.timeslice_us;
	q->sched_props.preempt_timeout_us =
				hwe->eclass->sched_props.preempt_timeout_us;
	q->sched_props.job_timeout_ms =
				hwe->eclass->sched_props.job_timeout_ms;
	if (q->flags & EXEC_QUEUE_FLAG_KERNEL &&
	    q->flags & EXEC_QUEUE_FLAG_HIGH_PRIORITY)
		q->sched_props.priority = XE_EXEC_QUEUE_PRIORITY_KERNEL;
	else
		q->sched_props.priority = XE_EXEC_QUEUE_PRIORITY_NORMAL;

	if (vm)
		q->vm = xe_vm_get(vm);

	if (extensions) {
		/*
		 * may set q->usm, must come before xe_lrc_create(),
		 * may overwrite q->sched_props, must come before q->ops->init()
		 */
		err = exec_queue_user_extensions(xe, q, extensions, 0);
		if (err) {
			__xe_exec_queue_free(q);
			return ERR_PTR(err);
		}
	}

	return q;
}

static int __xe_exec_queue_init(struct xe_exec_queue *q)
{
	struct xe_vm *vm = q->vm;
	int i, err;

	if (vm) {
		err = xe_vm_lock(vm, true);
		if (err)
			return err;
	}

	for (i = 0; i < q->width; ++i) {
		q->lrc[i] = xe_lrc_create(q->hwe, q->vm, SZ_16K);
		if (IS_ERR(q->lrc[i])) {
			err = PTR_ERR(q->lrc[i]);
			goto err_unlock;
		}
	}

	if (vm)
		xe_vm_unlock(vm);

	err = q->ops->init(q);
	if (err)
		goto err_lrc;

	return 0;

err_unlock:
	if (vm)
		xe_vm_unlock(vm);
err_lrc:
	for (i = i - 1; i >= 0; --i)
		xe_lrc_put(q->lrc[i]);
	return err;
}

struct xe_exec_queue *xe_exec_queue_create(struct xe_device *xe, struct xe_vm *vm,
					   u32 logical_mask, u16 width,
					   struct xe_hw_engine *hwe, u32 flags,
					   u64 extensions)
{
	struct xe_exec_queue *q;
	int err;

	q = __xe_exec_queue_alloc(xe, vm, logical_mask, width, hwe, flags,
				  extensions);
	if (IS_ERR(q))
		return q;

	err = __xe_exec_queue_init(q);
	if (err)
		goto err_post_alloc;

	return q;

err_post_alloc:
	__xe_exec_queue_free(q);
	return ERR_PTR(err);
}

struct xe_exec_queue *xe_exec_queue_create_class(struct xe_device *xe, struct xe_gt *gt,
						 struct xe_vm *vm,
						 enum xe_engine_class class,
						 u32 flags, u64 extensions)
{
	struct xe_hw_engine *hwe, *hwe0 = NULL;
	enum xe_hw_engine_id id;
	u32 logical_mask = 0;

	for_each_hw_engine(hwe, gt, id) {
		if (xe_hw_engine_is_reserved(hwe))
			continue;

		if (hwe->class == class) {
			logical_mask |= BIT(hwe->logical_instance);
			if (!hwe0)
				hwe0 = hwe;
		}
	}

	if (!logical_mask)
		return ERR_PTR(-ENODEV);

	return xe_exec_queue_create(xe, vm, logical_mask, 1, hwe0, flags, extensions);
}

/**
 * xe_exec_queue_create_bind() - Create bind exec queue.
 * @xe: Xe device.
 * @tile: tile which bind exec queue belongs to.
 * @flags: exec queue creation flags
 * @extensions: exec queue creation extensions
 *
 * Normalize bind exec queue creation. Bind exec queue is tied to migration VM
 * for access to physical memory required for page table programming. On a
 * faulting devices the reserved copy engine instance must be used to avoid
 * deadlocking (user binds cannot get stuck behind faults as kernel binds which
 * resolve faults depend on user binds). On non-faulting devices any copy engine
 * can be used.
 *
 * Returns exec queue on success, ERR_PTR on failure
 */
struct xe_exec_queue *xe_exec_queue_create_bind(struct xe_device *xe,
						struct xe_tile *tile,
						u32 flags, u64 extensions)
{
	struct xe_gt *gt = tile->primary_gt;
	struct xe_exec_queue *q;
	struct xe_vm *migrate_vm;

	migrate_vm = xe_migrate_get_vm(tile->migrate);
	if (xe->info.has_usm) {
		struct xe_hw_engine *hwe = xe_gt_hw_engine(gt,
							   XE_ENGINE_CLASS_COPY,
							   gt->usm.reserved_bcs_instance,
							   false);

		if (!hwe) {
			xe_vm_put(migrate_vm);
			return ERR_PTR(-EINVAL);
		}

		q = xe_exec_queue_create(xe, migrate_vm,
					 BIT(hwe->logical_instance), 1, hwe,
					 flags, extensions);
	} else {
		q = xe_exec_queue_create_class(xe, gt, migrate_vm,
					       XE_ENGINE_CLASS_COPY, flags,
					       extensions);
	}
	xe_vm_put(migrate_vm);

	return q;
}

void xe_exec_queue_destroy(struct kref *ref)
{
	struct xe_exec_queue *q = container_of(ref, struct xe_exec_queue, refcount);
	struct xe_exec_queue *eq, *next;

	xe_exec_queue_last_fence_put_unlocked(q);
	if (!(q->flags & EXEC_QUEUE_FLAG_BIND_ENGINE_CHILD)) {
		list_for_each_entry_safe(eq, next, &q->multi_gt_list,
					 multi_gt_link)
			xe_exec_queue_put(eq);
	}

	q->ops->fini(q);
}

void xe_exec_queue_fini(struct xe_exec_queue *q)
{
	int i;

	for (i = 0; i < q->width; ++i)
		xe_lrc_put(q->lrc[i]);
	__xe_exec_queue_free(q);
}

void xe_exec_queue_assign_name(struct xe_exec_queue *q, u32 instance)
{
	switch (q->class) {
	case XE_ENGINE_CLASS_RENDER:
		snprintf(q->name, sizeof(q->name), "rcs%d", instance);
		break;
	case XE_ENGINE_CLASS_VIDEO_DECODE:
		snprintf(q->name, sizeof(q->name), "vcs%d", instance);
		break;
	case XE_ENGINE_CLASS_VIDEO_ENHANCE:
		snprintf(q->name, sizeof(q->name), "vecs%d", instance);
		break;
	case XE_ENGINE_CLASS_COPY:
		snprintf(q->name, sizeof(q->name), "bcs%d", instance);
		break;
	case XE_ENGINE_CLASS_COMPUTE:
		snprintf(q->name, sizeof(q->name), "ccs%d", instance);
		break;
	case XE_ENGINE_CLASS_OTHER:
		snprintf(q->name, sizeof(q->name), "gsccs%d", instance);
		break;
	default:
		XE_WARN_ON(q->class);
	}
}

struct xe_exec_queue *xe_exec_queue_lookup(struct xe_file *xef, u32 id)
{
	struct xe_exec_queue *q;

	mutex_lock(&xef->exec_queue.lock);
	q = xa_load(&xef->exec_queue.xa, id);
	if (q)
		xe_exec_queue_get(q);
	mutex_unlock(&xef->exec_queue.lock);

	return q;
}

enum xe_exec_queue_priority
xe_exec_queue_device_get_max_priority(struct xe_device *xe)
{
	return capable(CAP_SYS_NICE) ? XE_EXEC_QUEUE_PRIORITY_HIGH :
				       XE_EXEC_QUEUE_PRIORITY_NORMAL;
}

static int exec_queue_set_priority(struct xe_device *xe, struct xe_exec_queue *q,
				   u64 value)
{
	if (XE_IOCTL_DBG(xe, value > XE_EXEC_QUEUE_PRIORITY_HIGH))
		return -EINVAL;

	if (XE_IOCTL_DBG(xe, value > xe_exec_queue_device_get_max_priority(xe)))
		return -EPERM;

	q->sched_props.priority = value;
	return 0;
}

static bool xe_exec_queue_enforce_schedule_limit(void)
{
#if IS_ENABLED(CONFIG_DRM_XE_ENABLE_SCHEDTIMEOUT_LIMIT)
	return true;
#else
	return !capable(CAP_SYS_NICE);
#endif
}

static void
xe_exec_queue_get_prop_minmax(struct xe_hw_engine_class_intf *eclass,
			      enum xe_exec_queue_sched_prop prop,
			      u32 *min, u32 *max)
{
	switch (prop) {
	case XE_EXEC_QUEUE_JOB_TIMEOUT:
		*min = eclass->sched_props.job_timeout_min;
		*max = eclass->sched_props.job_timeout_max;
		break;
	case XE_EXEC_QUEUE_TIMESLICE:
		*min = eclass->sched_props.timeslice_min;
		*max = eclass->sched_props.timeslice_max;
		break;
	case XE_EXEC_QUEUE_PREEMPT_TIMEOUT:
		*min = eclass->sched_props.preempt_timeout_min;
		*max = eclass->sched_props.preempt_timeout_max;
		break;
	default:
		break;
	}
#if IS_ENABLED(CONFIG_DRM_XE_ENABLE_SCHEDTIMEOUT_LIMIT)
	if (capable(CAP_SYS_NICE)) {
		switch (prop) {
		case XE_EXEC_QUEUE_JOB_TIMEOUT:
			*min = XE_HW_ENGINE_JOB_TIMEOUT_MIN;
			*max = XE_HW_ENGINE_JOB_TIMEOUT_MAX;
			break;
		case XE_EXEC_QUEUE_TIMESLICE:
			*min = XE_HW_ENGINE_TIMESLICE_MIN;
			*max = XE_HW_ENGINE_TIMESLICE_MAX;
			break;
		case XE_EXEC_QUEUE_PREEMPT_TIMEOUT:
			*min = XE_HW_ENGINE_PREEMPT_TIMEOUT_MIN;
			*max = XE_HW_ENGINE_PREEMPT_TIMEOUT_MAX;
			break;
		default:
			break;
		}
	}
#endif
}

static int exec_queue_set_timeslice(struct xe_device *xe, struct xe_exec_queue *q,
				    u64 value)
{
	u32 min = 0, max = 0;

	xe_exec_queue_get_prop_minmax(q->hwe->eclass,
				      XE_EXEC_QUEUE_TIMESLICE, &min, &max);

	if (xe_exec_queue_enforce_schedule_limit() &&
	    !xe_hw_engine_timeout_in_range(value, min, max))
		return -EINVAL;

	q->sched_props.timeslice_us = value;
	return 0;
}

typedef int (*xe_exec_queue_set_property_fn)(struct xe_device *xe,
					     struct xe_exec_queue *q,
					     u64 value);

static const xe_exec_queue_set_property_fn exec_queue_set_property_funcs[] = {
	[DRM_XE_EXEC_QUEUE_SET_PROPERTY_PRIORITY] = exec_queue_set_priority,
	[DRM_XE_EXEC_QUEUE_SET_PROPERTY_TIMESLICE] = exec_queue_set_timeslice,
};

static int exec_queue_user_ext_set_property(struct xe_device *xe,
					    struct xe_exec_queue *q,
					    u64 extension)
{
	u64 __user *address = u64_to_user_ptr(extension);
	struct drm_xe_ext_set_property ext;
	int err;
	u32 idx;

	err = __copy_from_user(&ext, address, sizeof(ext));
	if (XE_IOCTL_DBG(xe, err))
		return -EFAULT;

	if (XE_IOCTL_DBG(xe, ext.property >=
			 ARRAY_SIZE(exec_queue_set_property_funcs)) ||
	    XE_IOCTL_DBG(xe, ext.pad) ||
	    XE_IOCTL_DBG(xe, ext.property != DRM_XE_EXEC_QUEUE_SET_PROPERTY_PRIORITY &&
			 ext.property != DRM_XE_EXEC_QUEUE_SET_PROPERTY_TIMESLICE))
		return -EINVAL;

	idx = array_index_nospec(ext.property, ARRAY_SIZE(exec_queue_set_property_funcs));
	if (!exec_queue_set_property_funcs[idx])
		return -EINVAL;

	return exec_queue_set_property_funcs[idx](xe, q, ext.value);
}

typedef int (*xe_exec_queue_user_extension_fn)(struct xe_device *xe,
					       struct xe_exec_queue *q,
					       u64 extension);

static const xe_exec_queue_user_extension_fn exec_queue_user_extension_funcs[] = {
	[DRM_XE_EXEC_QUEUE_EXTENSION_SET_PROPERTY] = exec_queue_user_ext_set_property,
};

#define MAX_USER_EXTENSIONS	16
static int exec_queue_user_extensions(struct xe_device *xe, struct xe_exec_queue *q,
				      u64 extensions, int ext_number)
{
	u64 __user *address = u64_to_user_ptr(extensions);
	struct drm_xe_user_extension ext;
	int err;
	u32 idx;

	if (XE_IOCTL_DBG(xe, ext_number >= MAX_USER_EXTENSIONS))
		return -E2BIG;

	err = __copy_from_user(&ext, address, sizeof(ext));
	if (XE_IOCTL_DBG(xe, err))
		return -EFAULT;

	if (XE_IOCTL_DBG(xe, ext.pad) ||
	    XE_IOCTL_DBG(xe, ext.name >=
			 ARRAY_SIZE(exec_queue_user_extension_funcs)))
		return -EINVAL;

	idx = array_index_nospec(ext.name,
				 ARRAY_SIZE(exec_queue_user_extension_funcs));
	err = exec_queue_user_extension_funcs[idx](xe, q, extensions);
	if (XE_IOCTL_DBG(xe, err))
		return err;

	if (ext.next_extension)
		return exec_queue_user_extensions(xe, q, ext.next_extension,
						  ++ext_number);

	return 0;
}

static u32 calc_validate_logical_mask(struct xe_device *xe, struct xe_gt *gt,
				      struct drm_xe_engine_class_instance *eci,
				      u16 width, u16 num_placements)
{
	int len = width * num_placements;
	int i, j, n;
	u16 class;
	u16 gt_id;
	u32 return_mask = 0, prev_mask;

	if (XE_IOCTL_DBG(xe, !xe_device_uc_enabled(xe) &&
			 len > 1))
		return 0;

	for (i = 0; i < width; ++i) {
		u32 current_mask = 0;

		for (j = 0; j < num_placements; ++j) {
			struct xe_hw_engine *hwe;

			n = j * width + i;

			hwe = xe_hw_engine_lookup(xe, eci[n]);
			if (XE_IOCTL_DBG(xe, !hwe))
				return 0;

			if (XE_IOCTL_DBG(xe, xe_hw_engine_is_reserved(hwe)))
				return 0;

			if (XE_IOCTL_DBG(xe, n && eci[n].gt_id != gt_id) ||
			    XE_IOCTL_DBG(xe, n && eci[n].engine_class != class))
				return 0;

			class = eci[n].engine_class;
			gt_id = eci[n].gt_id;

			if (width == 1 || !i)
				return_mask |= BIT(eci[n].engine_instance);
			current_mask |= BIT(eci[n].engine_instance);
		}

		/* Parallel submissions must be logically contiguous */
		if (i && XE_IOCTL_DBG(xe, current_mask != prev_mask << 1))
			return 0;

		prev_mask = current_mask;
	}

	return return_mask;
}

int xe_exec_queue_create_ioctl(struct drm_device *dev, void *data,
			       struct drm_file *file)
{
	struct xe_device *xe = to_xe_device(dev);
	struct xe_file *xef = to_xe_file(file);
	struct drm_xe_exec_queue_create *args = data;
	struct drm_xe_engine_class_instance eci[XE_HW_ENGINE_MAX_INSTANCE];
	struct drm_xe_engine_class_instance __user *user_eci =
		u64_to_user_ptr(args->instances);
	struct xe_hw_engine *hwe;
	struct xe_vm *vm;
	struct xe_gt *gt;
	struct xe_tile *tile;
	struct xe_exec_queue *q = NULL;
	u32 logical_mask;
	u32 id;
	u32 len;
	int err;

	if (XE_IOCTL_DBG(xe, args->flags) ||
	    XE_IOCTL_DBG(xe, args->reserved[0] || args->reserved[1]))
		return -EINVAL;

	len = args->width * args->num_placements;
	if (XE_IOCTL_DBG(xe, !len || len > XE_HW_ENGINE_MAX_INSTANCE))
		return -EINVAL;

	err = __copy_from_user(eci, user_eci,
			       sizeof(struct drm_xe_engine_class_instance) *
			       len);
	if (XE_IOCTL_DBG(xe, err))
		return -EFAULT;

	if (XE_IOCTL_DBG(xe, eci[0].gt_id >= xe->info.gt_count))
		return -EINVAL;

	if (eci[0].engine_class == DRM_XE_ENGINE_CLASS_VM_BIND) {
		if (XE_IOCTL_DBG(xe, args->width != 1) ||
		    XE_IOCTL_DBG(xe, args->num_placements != 1) ||
		    XE_IOCTL_DBG(xe, eci[0].engine_instance != 0))
			return -EINVAL;

		for_each_tile(tile, xe, id) {
			struct xe_exec_queue *new;
			u32 flags = EXEC_QUEUE_FLAG_VM;

			if (id)
				flags |= EXEC_QUEUE_FLAG_BIND_ENGINE_CHILD;

			new = xe_exec_queue_create_bind(xe, tile, flags,
							args->extensions);
			if (IS_ERR(new)) {
				err = PTR_ERR(new);
				if (q)
					goto put_exec_queue;
				return err;
			}
			if (id == 0)
				q = new;
			else
				list_add_tail(&new->multi_gt_list,
					      &q->multi_gt_link);
		}
	} else {
		gt = xe_device_get_gt(xe, eci[0].gt_id);
		logical_mask = calc_validate_logical_mask(xe, gt, eci,
							  args->width,
							  args->num_placements);
		if (XE_IOCTL_DBG(xe, !logical_mask))
			return -EINVAL;

		hwe = xe_hw_engine_lookup(xe, eci[0]);
		if (XE_IOCTL_DBG(xe, !hwe))
			return -EINVAL;

		vm = xe_vm_lookup(xef, args->vm_id);
		if (XE_IOCTL_DBG(xe, !vm))
			return -ENOENT;

		err = down_read_interruptible(&vm->lock);
		if (err) {
			xe_vm_put(vm);
			return err;
		}

		if (XE_IOCTL_DBG(xe, xe_vm_is_closed_or_banned(vm))) {
			up_read(&vm->lock);
			xe_vm_put(vm);
			return -ENOENT;
		}

		q = xe_exec_queue_create(xe, vm, logical_mask,
					 args->width, hwe, 0,
					 args->extensions);
		up_read(&vm->lock);
		xe_vm_put(vm);
		if (IS_ERR(q))
			return PTR_ERR(q);

		if (xe_vm_in_preempt_fence_mode(vm)) {
			q->lr.context = dma_fence_context_alloc(1);

			err = xe_vm_add_compute_exec_queue(vm, q);
			if (XE_IOCTL_DBG(xe, err))
				goto put_exec_queue;
		}

		if (q->vm && q->hwe->hw_engine_group) {
			err = xe_hw_engine_group_add_exec_queue(q->hwe->hw_engine_group, q);
			if (err)
				goto put_exec_queue;
		}
	}

	mutex_lock(&xef->exec_queue.lock);
	err = xa_alloc(&xef->exec_queue.xa, &id, q, xa_limit_32b, GFP_KERNEL);
	mutex_unlock(&xef->exec_queue.lock);
	if (err)
		goto kill_exec_queue;

	args->exec_queue_id = id;
	q->xef = xe_file_get(xef);

	return 0;

kill_exec_queue:
	xe_exec_queue_kill(q);
put_exec_queue:
	xe_exec_queue_put(q);
	return err;
}

int xe_exec_queue_get_property_ioctl(struct drm_device *dev, void *data,
				     struct drm_file *file)
{
	struct xe_device *xe = to_xe_device(dev);
	struct xe_file *xef = to_xe_file(file);
	struct drm_xe_exec_queue_get_property *args = data;
	struct xe_exec_queue *q;
	int ret;

	if (XE_IOCTL_DBG(xe, args->reserved[0] || args->reserved[1]))
		return -EINVAL;

	q = xe_exec_queue_lookup(xef, args->exec_queue_id);
	if (XE_IOCTL_DBG(xe, !q))
		return -ENOENT;

	switch (args->property) {
	case DRM_XE_EXEC_QUEUE_GET_PROPERTY_BAN:
		args->value = q->ops->reset_status(q);
		ret = 0;
		break;
	default:
		ret = -EINVAL;
	}

	xe_exec_queue_put(q);

	return ret;
}

/**
 * xe_exec_queue_is_lr() - Whether an exec_queue is long-running
 * @q: The exec_queue
 *
 * Return: True if the exec_queue is long-running, false otherwise.
 */
bool xe_exec_queue_is_lr(struct xe_exec_queue *q)
{
	return q->vm && xe_vm_in_lr_mode(q->vm) &&
		!(q->flags & EXEC_QUEUE_FLAG_VM);
}

static s32 xe_exec_queue_num_job_inflight(struct xe_exec_queue *q)
{
	return q->lrc[0]->fence_ctx.next_seqno - xe_lrc_seqno(q->lrc[0]) - 1;
}

/**
 * xe_exec_queue_ring_full() - Whether an exec_queue's ring is full
 * @q: The exec_queue
 *
 * Return: True if the exec_queue's ring is full, false otherwise.
 */
bool xe_exec_queue_ring_full(struct xe_exec_queue *q)
{
	struct xe_lrc *lrc = q->lrc[0];
	s32 max_job = lrc->ring.size / MAX_JOB_SIZE_BYTES;

	return xe_exec_queue_num_job_inflight(q) >= max_job;
}

/**
 * xe_exec_queue_is_idle() - Whether an exec_queue is idle.
 * @q: The exec_queue
 *
 * FIXME: Need to determine what to use as the short-lived
 * timeline lock for the exec_queues, so that the return value
 * of this function becomes more than just an advisory
 * snapshot in time. The timeline lock must protect the
 * seqno from racing submissions on the same exec_queue.
 * Typically vm->resv, but user-created timeline locks use the migrate vm
 * and never grabs the migrate vm->resv so we have a race there.
 *
 * Return: True if the exec_queue is idle, false otherwise.
 */
bool xe_exec_queue_is_idle(struct xe_exec_queue *q)
{
	if (xe_exec_queue_is_parallel(q)) {
		int i;

		for (i = 0; i < q->width; ++i) {
			if (xe_lrc_seqno(q->lrc[i]) !=
			    q->lrc[i]->fence_ctx.next_seqno - 1)
				return false;
		}

		return true;
	}

	return xe_lrc_seqno(q->lrc[0]) ==
		q->lrc[0]->fence_ctx.next_seqno - 1;
}

/**
 * xe_exec_queue_update_run_ticks() - Update run time in ticks for this exec queue
 * from hw
 * @q: The exec queue
 *
 * Update the timestamp saved by HW for this exec queue and save run ticks
 * calculated by using the delta from last update.
 */
void xe_exec_queue_update_run_ticks(struct xe_exec_queue *q)
{
	struct xe_file *xef;
	struct xe_lrc *lrc;
	u32 old_ts, new_ts;

	/*
	 * Jobs that are run during driver load may use an exec_queue, but are
	 * not associated with a user xe file, so avoid accumulating busyness
	 * for kernel specific work.
	 */
	if (!q->vm || !q->vm->xef)
		return;

	xef = q->vm->xef;

	/*
	 * Only sample the first LRC. For parallel submission, all of them are
	 * scheduled together and we compensate that below by multiplying by
	 * width - this may introduce errors if that premise is not true and
	 * they don't exit 100% aligned. On the other hand, looping through
	 * the LRCs and reading them in different time could also introduce
	 * errors.
	 */
	lrc = q->lrc[0];
	new_ts = xe_lrc_update_timestamp(lrc, &old_ts);
	xef->run_ticks[q->class] += (new_ts - old_ts) * q->width;
}

/**
 * xe_exec_queue_kill - permanently stop all execution from an exec queue
 * @q: The exec queue
 *
 * This function permanently stops all activity on an exec queue. If the queue
 * is actively executing on the HW, it will be kicked off the engine; any
 * pending jobs are discarded and all future submissions are rejected.
 * This function is safe to call multiple times.
 */
void xe_exec_queue_kill(struct xe_exec_queue *q)
{
	struct xe_exec_queue *eq = q, *next;

	list_for_each_entry_safe(eq, next, &eq->multi_gt_list,
				 multi_gt_link) {
		q->ops->kill(eq);
		xe_vm_remove_compute_exec_queue(q->vm, eq);
	}

	q->ops->kill(q);
	xe_vm_remove_compute_exec_queue(q->vm, q);
}

int xe_exec_queue_destroy_ioctl(struct drm_device *dev, void *data,
				struct drm_file *file)
{
	struct xe_device *xe = to_xe_device(dev);
	struct xe_file *xef = to_xe_file(file);
	struct drm_xe_exec_queue_destroy *args = data;
	struct xe_exec_queue *q;

	if (XE_IOCTL_DBG(xe, args->pad) ||
	    XE_IOCTL_DBG(xe, args->reserved[0] || args->reserved[1]))
		return -EINVAL;

	mutex_lock(&xef->exec_queue.lock);
	q = xa_erase(&xef->exec_queue.xa, args->exec_queue_id);
	mutex_unlock(&xef->exec_queue.lock);
	if (XE_IOCTL_DBG(xe, !q))
		return -ENOENT;

	if (q->vm && q->hwe->hw_engine_group)
		xe_hw_engine_group_del_exec_queue(q->hwe->hw_engine_group, q);

	xe_exec_queue_kill(q);

	trace_xe_exec_queue_close(q);
	xe_exec_queue_put(q);

	return 0;
}

static void xe_exec_queue_last_fence_lockdep_assert(struct xe_exec_queue *q,
						    struct xe_vm *vm)
{
	if (q->flags & EXEC_QUEUE_FLAG_VM) {
		lockdep_assert_held(&vm->lock);
	} else {
		xe_vm_assert_held(vm);
		lockdep_assert_held(&q->hwe->hw_engine_group->mode_sem);
	}
}

/**
 * xe_exec_queue_last_fence_put() - Drop ref to last fence
 * @q: The exec queue
 * @vm: The VM the engine does a bind or exec for
 */
void xe_exec_queue_last_fence_put(struct xe_exec_queue *q, struct xe_vm *vm)
{
	xe_exec_queue_last_fence_lockdep_assert(q, vm);

	xe_exec_queue_last_fence_put_unlocked(q);
}

/**
 * xe_exec_queue_last_fence_put_unlocked() - Drop ref to last fence unlocked
 * @q: The exec queue
 *
 * Only safe to be called from xe_exec_queue_destroy().
 */
void xe_exec_queue_last_fence_put_unlocked(struct xe_exec_queue *q)
{
	if (q->last_fence) {
		dma_fence_put(q->last_fence);
		q->last_fence = NULL;
	}
}

/**
 * xe_exec_queue_last_fence_get() - Get last fence
 * @q: The exec queue
 * @vm: The VM the engine does a bind or exec for
 *
 * Get last fence, takes a ref
 *
 * Returns: last fence if not signaled, dma fence stub if signaled
 */
struct dma_fence *xe_exec_queue_last_fence_get(struct xe_exec_queue *q,
					       struct xe_vm *vm)
{
	struct dma_fence *fence;

	xe_exec_queue_last_fence_lockdep_assert(q, vm);

	if (q->last_fence &&
	    test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &q->last_fence->flags))
		xe_exec_queue_last_fence_put(q, vm);

	fence = q->last_fence ? q->last_fence : dma_fence_get_stub();
	dma_fence_get(fence);
	return fence;
}

/**
 * xe_exec_queue_last_fence_get_for_resume() - Get last fence
 * @q: The exec queue
 * @vm: The VM the engine does a bind or exec for
 *
 * Get last fence, takes a ref. Only safe to be called in the context of
 * resuming the hw engine group's long-running exec queue, when the group
 * semaphore is held.
 *
 * Returns: last fence if not signaled, dma fence stub if signaled
 */
struct dma_fence *xe_exec_queue_last_fence_get_for_resume(struct xe_exec_queue *q,
							  struct xe_vm *vm)
{
	struct dma_fence *fence;

	lockdep_assert_held_write(&q->hwe->hw_engine_group->mode_sem);

	if (q->last_fence &&
	    test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &q->last_fence->flags))
		xe_exec_queue_last_fence_put_unlocked(q);

	fence = q->last_fence ? q->last_fence : dma_fence_get_stub();
	dma_fence_get(fence);
	return fence;
}

/**
 * xe_exec_queue_last_fence_set() - Set last fence
 * @q: The exec queue
 * @vm: The VM the engine does a bind or exec for
 * @fence: The fence
 *
 * Set the last fence for the engine. Increases reference count for fence, when
 * closing engine xe_exec_queue_last_fence_put should be called.
 */
void xe_exec_queue_last_fence_set(struct xe_exec_queue *q, struct xe_vm *vm,
				  struct dma_fence *fence)
{
	xe_exec_queue_last_fence_lockdep_assert(q, vm);

	xe_exec_queue_last_fence_put(q, vm);
	q->last_fence = dma_fence_get(fence);
}

/**
 * xe_exec_queue_last_fence_test_dep - Test last fence dependency of queue
 * @q: The exec queue
 * @vm: The VM the engine does a bind or exec for
 *
 * Returns:
 * -ETIME if there exists an unsignalled last fence dependency, zero otherwise.
 */
int xe_exec_queue_last_fence_test_dep(struct xe_exec_queue *q, struct xe_vm *vm)
{
	struct dma_fence *fence;
	int err = 0;

	fence = xe_exec_queue_last_fence_get(q, vm);
	if (fence) {
		err = test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags) ?
			0 : -ETIME;
		dma_fence_put(fence);
	}

	return err;
}