aboutsummaryrefslogtreecommitdiff
path: root/drivers/gpu/arm/t6xx/kbase/src/common/mali_kbase_jd.c
blob: f1961d2c511eae9a0ddb0f2d1ed4537f0b83f036 (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
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
/*
 *
 * (C) COPYRIGHT 2010-2013 ARM Limited. All rights reserved.
 *
 * This program is free software and is provided to you under the terms of the
 * GNU General Public License version 2 as published by the Free Software
 * Foundation, and any use by you of this program is subject to the terms
 * of such GNU licence.
 *
 * A copy of the licence is included with the program, and can also be obtained
 * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 *
 */



#if defined(CONFIG_DMA_SHARED_BUFFER)
#include <linux/dma-buf.h>
#endif				/* defined(CONFIG_DMA_SHARED_BUFFER) */
#ifdef CONFIG_COMPAT
#include <linux/compat.h>
#endif
#include <kbase/src/common/mali_kbase.h>
#include <kbase/src/common/mali_kbase_uku.h>
#include <kbase/src/common/mali_kbase_js_affinity.h>
#include <kbase/src/common/mali_kbase_10969_workaround.h>
#ifdef CONFIG_UMP
#include <linux/ump.h>
#endif				/* CONFIG_UMP */

#define beenthere(f, a...)  KBASE_DEBUG_PRINT_INFO(KBASE_JD, "%s:" f, __func__, ##a)

/*
 * This is the kernel side of the API. Only entry points are:
 * - kbase_jd_submit(): Called from userspace to submit a single bag
 * - kbase_jd_done(): Called from interrupt context to track the
 *   completion of a job.
 * Callouts:
 * - to the job manager (enqueue a job)
 * - to the event subsystem (signals the completion/failure of bag/job-chains).
 */

static void *get_compat_pointer(const kbase_pointer *p)
{
#ifdef CONFIG_COMPAT
	if (is_compat_task())
		return (void *)p->compat_value;
	else
#endif
		return p->value;
}

/* Runs an atom, either by handing to the JS or by immediately running it in the case of soft-jobs
 *
 * Returns whether the JS needs a reschedule.
 *
 * Note that the caller must also check the atom status and
 * if it is KBASE_JD_ATOM_STATE_COMPLETED must call jd_done_nolock
 */
static int jd_run_atom(kbase_jd_atom *katom)
{
	kbase_context *kctx = katom->kctx;
	KBASE_DEBUG_ASSERT(katom->status != KBASE_JD_ATOM_STATE_UNUSED);

	if ((katom->core_req & BASEP_JD_REQ_ATOM_TYPE) == BASE_JD_REQ_DEP) {
		/* Dependency only atom */
		katom->status = KBASE_JD_ATOM_STATE_COMPLETED;
		return 0;
	} else if (katom->core_req & BASE_JD_REQ_SOFT_JOB) {
		/* Soft-job */
		if (kbase_process_soft_job(katom) == 0) {
			kbase_finish_soft_job(katom);
			katom->status = KBASE_JD_ATOM_STATE_COMPLETED;
		} else {
			/* The job has not completed */
			list_add_tail(&katom->dep_item[0], &kctx->waiting_soft_jobs);
		}
		return 0;
	}
	katom->status = KBASE_JD_ATOM_STATE_IN_JS;
	/* Queue an action about whether we should try scheduling a context */
	return kbasep_js_add_job(kctx, katom);
}

#ifdef CONFIG_KDS

/* Add the katom to the kds waiting list.
 * Atoms must be added to the waiting list after a successful call to kds_async_waitall.
 * The caller must hold the kbase_jd_context.lock */

static void kbase_jd_kds_waiters_add(kbase_jd_atom *katom)
{
	kbase_context *kctx;
	KBASE_DEBUG_ASSERT(katom);

	kctx = katom->kctx;

	list_add_tail(&katom->node, &kctx->waiting_kds_resource);
}

/* Remove the katom from the kds waiting list.
 * Atoms must be removed from the waiting list before a call to kds_resource_set_release_sync.
 * The supplied katom must first have been added to the list with a call to kbase_jd_kds_waiters_add.
 * The caller must hold the kbase_jd_context.lock */

static void kbase_jd_kds_waiters_remove(kbase_jd_atom *katom)
{
	KBASE_DEBUG_ASSERT(katom);
	list_del(&katom->node);
}

static void kds_dep_clear(void *callback_parameter, void *callback_extra_parameter)
{
	kbase_jd_atom *katom;
	kbase_jd_context *ctx;
	kbase_device *kbdev;

	katom = (kbase_jd_atom *) callback_parameter;
	KBASE_DEBUG_ASSERT(katom);
	ctx = &katom->kctx->jctx;
	kbdev = katom->kctx->kbdev;
	KBASE_DEBUG_ASSERT(kbdev);

	mutex_lock(&ctx->lock);

	/* KDS resource has already been satisfied (e.g. due to zapping) */
	if (katom->kds_dep_satisfied)
		goto out;

	/* This atom's KDS dependency has now been met */
	katom->kds_dep_satisfied = MALI_TRUE;

	/* Check whether the atom's other dependencies were already met */
	if (!katom->dep_atom[0] && !katom->dep_atom[1]) {
		/* katom dep complete, attempt to run it */
		mali_bool resched = MALI_FALSE;
		resched = jd_run_atom(katom);

		if (katom->status == KBASE_JD_ATOM_STATE_COMPLETED) {
			/* The atom has already finished */
			resched |= jd_done_nolock(katom);
		}

		if (resched)
			kbasep_js_try_schedule_head_ctx(kbdev);
	}
 out:
	mutex_unlock(&ctx->lock);
}

void kbase_cancel_kds_wait_job(kbase_jd_atom *katom)
{
	KBASE_DEBUG_ASSERT(katom);

	/* Prevent job_done_nolock from being called twice on an atom when
	 *  there is a race between job completion and cancellation */

	if ( katom->status == KBASE_JD_ATOM_STATE_QUEUED ) {
		/* Wait was cancelled - zap the atom */
		katom->event_code = BASE_JD_EVENT_JOB_CANCELLED;
		if (jd_done_nolock(katom)) {
			kbasep_js_try_schedule_head_ctx( katom->kctx->kbdev );
		}
	}
}
#endif				/* CONFIG_KDS */

#ifdef CONFIG_DMA_SHARED_BUFFER
static mali_error kbase_jd_umm_map(kbase_context *kctx, struct kbase_va_region *reg)
{
	struct sg_table *st;
	struct scatterlist *s;
	int i;
	phys_addr_t *pa;
	mali_error err;

	KBASE_DEBUG_ASSERT(NULL == reg->imported_metadata.umm.st);
	st = dma_buf_map_attachment(reg->imported_metadata.umm.dma_attachment, DMA_BIDIRECTIONAL);

	if (IS_ERR_OR_NULL(st))
		return MALI_ERROR_FUNCTION_FAILED;

	/* save for later */
	reg->imported_metadata.umm.st = st;

	pa = kbase_get_phy_pages(reg);
	KBASE_DEBUG_ASSERT(pa);

	for_each_sg(st->sgl, s, st->nents, i) {
		int j;
		size_t pages = PFN_DOWN(sg_dma_len(s));

		for (j = 0; j < pages; j++)
			*pa++ = sg_dma_address(s) + (j << PAGE_SHIFT);
	}

	err = kbase_mmu_insert_pages(kctx, reg->start_pfn, kbase_get_phy_pages(reg), reg->nr_alloc_pages, reg->flags | KBASE_REG_GPU_WR | KBASE_REG_GPU_RD);

	if (MALI_ERROR_NONE != err) {
		dma_buf_unmap_attachment(reg->imported_metadata.umm.dma_attachment, reg->imported_metadata.umm.st, DMA_BIDIRECTIONAL);
		reg->imported_metadata.umm.st = NULL;
	}

	return err;
}

static void kbase_jd_umm_unmap(kbase_context *kctx, struct kbase_va_region *reg)
{
	KBASE_DEBUG_ASSERT(kctx);
	KBASE_DEBUG_ASSERT(reg);
	KBASE_DEBUG_ASSERT(reg->imported_metadata.umm.dma_attachment);
	KBASE_DEBUG_ASSERT(reg->imported_metadata.umm.st);
	kbase_mmu_teardown_pages(kctx, reg->start_pfn, reg->nr_alloc_pages);
	dma_buf_unmap_attachment(reg->imported_metadata.umm.dma_attachment, reg->imported_metadata.umm.st, DMA_BIDIRECTIONAL);
	reg->imported_metadata.umm.st = NULL;
}
#endif				/* CONFIG_DMA_SHARED_BUFFER */

void kbase_jd_free_external_resources(kbase_jd_atom *katom)
{
#ifdef CONFIG_KDS
	if (katom->kds_rset) {
		kbase_jd_context * jctx = &katom->kctx->jctx;

		/*
		 * As the atom is no longer waiting, remove it from
		 * the waiting list.
		 */

		mutex_lock(&jctx->lock);
		kbase_jd_kds_waiters_remove( katom );
		mutex_unlock(&jctx->lock);

		/* Release the kds resource or cancel if zapping */
		kds_resource_set_release_sync(&katom->kds_rset);
	}
#endif				/* CONFIG_KDS */
}

static void kbase_jd_post_external_resources(kbase_jd_atom *katom)
{
	KBASE_DEBUG_ASSERT(katom);
	KBASE_DEBUG_ASSERT(katom->core_req & BASE_JD_REQ_EXTERNAL_RESOURCES);

#ifdef CONFIG_KDS
	/* Prevent the KDS resource from triggering the atom in case of zapping */
	if (katom->kds_rset)
		katom->kds_dep_satisfied = MALI_TRUE;
#endif				/* CONFIG_KDS */

#if defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG)
	/* Lock also used in debug mode just for lock order checking */
	kbase_gpu_vm_lock(katom->kctx);
#endif				/* defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG) */
	/* only roll back if extres is non-NULL */
	if (katom->extres) {
#ifdef CONFIG_DMA_SHARED_BUFFER
		u32 res_no;
		res_no = katom->nr_extres;
		while (res_no-- > 0) {
			base_external_resource *res;
			kbase_va_region *reg;

			res = &katom->extres[res_no];
			reg = kbase_region_tracker_find_region_enclosing_address(katom->kctx, res->ext_resource & ~BASE_EXT_RES_ACCESS_EXCLUSIVE);
			/* if reg wasn't found then it has been freed while the job ran */
			if (reg && reg->imported_type == BASE_TMEM_IMPORT_TYPE_UMM) {
				/* last job using */
				if (1 == reg->imported_metadata.umm.current_mapping_usage_count--)
					kbase_jd_umm_unmap(katom->kctx, reg);
			}
		}
#endif				/* CONFIG_DMA_SHARED_BUFFER */
		kfree(katom->extres);
		katom->extres = NULL;
	}
#if defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG)
	/* Lock also used in debug mode just for lock order checking */
	kbase_gpu_vm_unlock(katom->kctx);
#endif				/* defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG) */
}

#if (defined(CONFIG_KDS) && defined(CONFIG_UMP)) || defined(CONFIG_DMA_SHARED_BUFFER_USES_KDS)
static void add_kds_resource(struct kds_resource *kds_res, struct kds_resource **kds_resources, u32 *kds_res_count, unsigned long *kds_access_bitmap, mali_bool exclusive)
{
	u32 i;

	for (i = 0; i < *kds_res_count; i++) {
		/* Duplicate resource, ignore */
		if (kds_resources[i] == kds_res)
			return;
	}

	kds_resources[*kds_res_count] = kds_res;
	if (exclusive)
		set_bit(*kds_res_count, kds_access_bitmap);
	(*kds_res_count)++;
}
#endif

/*
 * Set up external resources needed by this job.
 *
 * jctx.lock must be held when this is called.
 */

static mali_error kbase_jd_pre_external_resources(kbase_jd_atom *katom, const base_jd_atom_v2 *user_atom)
{
	mali_error err_ret_val = MALI_ERROR_FUNCTION_FAILED;
	u32 res_no;
#ifdef CONFIG_KDS
	u32 kds_res_count = 0;
	struct kds_resource **kds_resources = NULL;
	unsigned long *kds_access_bitmap = NULL;
#endif				/* CONFIG_KDS */

	KBASE_DEBUG_ASSERT(katom);
	KBASE_DEBUG_ASSERT(katom->core_req & BASE_JD_REQ_EXTERNAL_RESOURCES);

	/* no resources encoded, early out */
	if (!katom->nr_extres)
		return MALI_ERROR_FUNCTION_FAILED;

	katom->extres = kmalloc(sizeof(base_external_resource) * katom->nr_extres, GFP_KERNEL);
	if (NULL == katom->extres) {
		err_ret_val = MALI_ERROR_OUT_OF_MEMORY;
		goto early_err_out;
	}

	if (copy_from_user(katom->extres, get_compat_pointer(&user_atom->extres_list), sizeof(base_external_resource) * katom->nr_extres) != 0) {
		err_ret_val = MALI_ERROR_FUNCTION_FAILED;
		goto early_err_out;
	}
#ifdef CONFIG_KDS
	/* assume we have to wait for all */
	KBASE_DEBUG_ASSERT(0 != katom->nr_extres);
	kds_resources = kmalloc(sizeof(struct kds_resource *) * katom->nr_extres, GFP_KERNEL);

	if (NULL == kds_resources) {
		err_ret_val = MALI_ERROR_OUT_OF_MEMORY;
		goto early_err_out;
	}

	KBASE_DEBUG_ASSERT(0 != katom->nr_extres);
	kds_access_bitmap = kzalloc(sizeof(unsigned long) * ((katom->nr_extres + BITS_PER_LONG - 1) / BITS_PER_LONG), GFP_KERNEL);

	if (NULL == kds_access_bitmap) {
		err_ret_val = MALI_ERROR_OUT_OF_MEMORY;
		goto early_err_out;
	}
#endif				/* CONFIG_KDS */

#if defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG)
	/* need to keep the GPU VM locked while we set up UMM buffers */
	/* Lock also used in debug mode just for lock order checking */
	kbase_gpu_vm_lock(katom->kctx);
#endif				/* defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG) */

	for (res_no = 0; res_no < katom->nr_extres; res_no++) {
		base_external_resource *res;
		kbase_va_region *reg;

		res = &katom->extres[res_no];
		reg = kbase_region_tracker_find_region_enclosing_address(katom->kctx, res->ext_resource & ~BASE_EXT_RES_ACCESS_EXCLUSIVE);
		/* did we find a matching region object? */
		if (NULL == reg) {
			/* roll back */
			goto failed_loop;
		}

		/* decide what needs to happen for this resource */
		switch (reg->imported_type) {
		case BASE_TMEM_IMPORT_TYPE_UMP:
			{
#if defined(CONFIG_KDS) && defined(CONFIG_UMP)
				struct kds_resource *kds_res;
				kds_res = ump_dd_kds_resource_get(reg->imported_metadata.ump_handle);
				if (kds_res)
					add_kds_resource(kds_res, kds_resources, &kds_res_count, kds_access_bitmap, katom->extres[res_no].ext_resource & BASE_EXT_RES_ACCESS_EXCLUSIVE);
#endif				/*defined(CONFIG_KDS) && defined(CONFIG_UMP) */
				break;
			}
#ifdef CONFIG_DMA_SHARED_BUFFER
		case BASE_TMEM_IMPORT_TYPE_UMM:
			{
#ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
				struct kds_resource *kds_res;
				kds_res = get_dma_buf_kds_resource(reg->imported_metadata.umm.dma_buf);
				if (kds_res)
					add_kds_resource(kds_res, kds_resources, &kds_res_count, kds_access_bitmap, katom->extres[res_no].ext_resource & BASE_EXT_RES_ACCESS_EXCLUSIVE);
#endif
				reg->imported_metadata.umm.current_mapping_usage_count++;
				if (1 == reg->imported_metadata.umm.current_mapping_usage_count) {
					/* use a local variable to not pollute err_ret_val
					 * with a potential success value as some other gotos depend
					 * on the default error code stored in err_ret_val */
					mali_error tmp;
					tmp = kbase_jd_umm_map(katom->kctx, reg);
					if (MALI_ERROR_NONE != tmp) {
						/* failed to map this buffer, roll back */
						err_ret_val = tmp;
						reg->imported_metadata.umm.current_mapping_usage_count--;
						goto failed_loop;
					}
				}
				break;
			}
#endif
		default:
			goto failed_loop;
		}
	}
	/* successfully parsed the extres array */
#if defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG)
	/* drop the vm lock before we call into kds */
	/* Lock also used in debug mode just for lock order checking */
	kbase_gpu_vm_unlock(katom->kctx);
#endif				/* defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG) */

#ifdef CONFIG_KDS
	if (kds_res_count) {
		int wait_failed;
		/* We have resources to wait for with kds */
		katom->kds_dep_satisfied = MALI_FALSE;

		wait_failed = kds_async_waitall(&katom->kds_rset,
										&katom->kctx->jctx.kds_cb,
										katom,
										NULL,
										kds_res_count,
										kds_access_bitmap,
										kds_resources);
		if (wait_failed) {
			goto failed_kds_setup;
		} else {
			kbase_jd_kds_waiters_add( katom );
		}
	} else {
		/* Nothing to wait for, so kds dep met */
		katom->kds_dep_satisfied = MALI_TRUE;
	}
	kfree(kds_resources);
	kfree(kds_access_bitmap);
#endif				/* CONFIG_KDS */

	/* all done OK */
	return MALI_ERROR_NONE;

/* error handling section */

#ifdef CONFIG_KDS
 failed_kds_setup:

#if defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG)
	/* lock before we unmap */
	/* Lock also used in debug mode just for lock order checking */
	kbase_gpu_vm_lock(katom->kctx);
#endif				/* defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG) */
#endif				/* CONFIG_KDS */

 failed_loop:
#ifdef CONFIG_DMA_SHARED_BUFFER
	/* undo the loop work */
	while (res_no-- > 0) {
		base_external_resource *res;
		kbase_va_region *reg;

		res = &katom->extres[res_no];
		reg = kbase_region_tracker_find_region_enclosing_address(katom->kctx, res->ext_resource & ~BASE_EXT_RES_ACCESS_EXCLUSIVE);
		/* if reg wasn't found then it has been freed when we set up kds */
		if (reg && reg->imported_type == BASE_TMEM_IMPORT_TYPE_UMM) {
			reg->imported_metadata.umm.current_mapping_usage_count--;
			if (0 == reg->imported_metadata.umm.current_mapping_usage_count)
				kbase_jd_umm_unmap(katom->kctx, reg);
		}
	}
#endif				/* CONFIG_DMA_SHARED_BUFFER */
#if defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG)
	/* Lock also used in debug mode just for lock order checking */
	kbase_gpu_vm_unlock(katom->kctx);
#endif				/* defined(CONFIG_DMA_SHARED_BUFFER) || defined(CONFIG_MALI_DEBUG) */

 early_err_out:
	kfree(katom->extres);
	katom->extres = NULL;
#ifdef CONFIG_KDS
	kfree(kds_resources);
	kfree(kds_access_bitmap);
#endif				/* CONFIG_KDS */
	return err_ret_val;
}

STATIC INLINE void jd_resolve_dep(struct list_head *out_list, kbase_jd_atom *katom, u8 d)
{
	u8 other_d = !d;

	while (!list_empty(&katom->dep_head[d])) {
		kbase_jd_atom *dep_atom = list_entry(katom->dep_head[d].next, kbase_jd_atom, dep_item[d]);
		list_del(katom->dep_head[d].next);

		dep_atom->dep_atom[d] = NULL;

		if (katom->event_code != BASE_JD_EVENT_DONE) {
			/* Atom failed, so remove the other dependencies and immediately fail the atom */
			if (dep_atom->dep_atom[other_d]) {
				list_del(&dep_atom->dep_item[other_d]);
				dep_atom->dep_atom[other_d] = NULL;
			}
#ifdef CONFIG_KDS
			if (!dep_atom->kds_dep_satisfied) {
				/* Just set kds_dep_satisfied to true. If the callback happens after this then it will early out and
				 * do nothing. If the callback doesn't happen then kbase_jd_post_external_resources will clean up
				 */
				dep_atom->kds_dep_satisfied = MALI_TRUE;
			}
#endif

			dep_atom->event_code = katom->event_code;
			KBASE_DEBUG_ASSERT(dep_atom->status != KBASE_JD_ATOM_STATE_UNUSED);
			dep_atom->status = KBASE_JD_ATOM_STATE_COMPLETED;

			list_add(&dep_atom->dep_item[0], out_list);
		} else if (!dep_atom->dep_atom[other_d]) {
#ifdef CONFIG_KDS
			if (dep_atom->kds_dep_satisfied)
#endif
				list_add(&dep_atom->dep_item[0], out_list);
		}
	}
}

KBASE_EXPORT_TEST_API(jd_resolve_dep)

/*
 * Perform the necessary handling of an atom that has finished running
 * on the GPU.
 *
 * Note that if this is a soft-job that has had kbase_prepare_soft_job called on it then the caller
 * is responsible for calling kbase_finish_soft_job *before* calling this function.
 *
 * The caller must hold the kbase_jd_context.lock.
 */
mali_bool jd_done_nolock(kbase_jd_atom *katom)
{
	struct kbase_context *kctx = katom->kctx;
	kbase_device *kbdev = kctx->kbdev;
	struct list_head completed_jobs;
	struct list_head runnable_jobs;
	mali_bool need_to_try_schedule_context = MALI_FALSE;
	int i;

	INIT_LIST_HEAD(&completed_jobs);
	INIT_LIST_HEAD(&runnable_jobs);

	KBASE_DEBUG_ASSERT(katom->status != KBASE_JD_ATOM_STATE_UNUSED);

	/* This is needed in case an atom is failed due to being invalid, this
	 * can happen *before* the jobs that the atom depends on have completed */
	for (i = 0; i < 2; i++) {
		if (katom->dep_atom[i]) {
			list_del(&katom->dep_item[i]);
			katom->dep_atom[i] = NULL;
		}
	}

	/* With PRLAM-10817 the last tile of a fragment job being soft-stopped can fail with
	 * BASE_JD_EVENT_TILE_RANGE_FAULT.
	 *
	 * So here if the fragment job failed with TILE_RANGE_FAULT and it has been soft-stopped, then we promote the
	 * error code to BASE_JD_EVENT_DONE
	 */

	if ( kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_10817) && katom->event_code == BASE_JD_EVENT_TILE_RANGE_FAULT ) {
		if ( ( katom->core_req & BASE_JD_REQ_FS ) && (katom->atom_flags & KBASE_KATOM_FLAG_BEEN_SOFT_STOPPPED) ) {
			/* Promote the failure to job done */
			katom->event_code = BASE_JD_EVENT_DONE;
			katom->atom_flags = katom->atom_flags & (~KBASE_KATOM_FLAG_BEEN_SOFT_STOPPPED);
		}
	}

	katom->status = KBASE_JD_ATOM_STATE_COMPLETED;
	list_add_tail(&katom->dep_item[0], &completed_jobs);

	while (!list_empty(&completed_jobs)) {
		katom = list_entry(completed_jobs.prev, kbase_jd_atom, dep_item[0]);
		list_del(completed_jobs.prev);

		KBASE_DEBUG_ASSERT(katom->status == KBASE_JD_ATOM_STATE_COMPLETED);

		for (i = 0; i < 2; i++)
			jd_resolve_dep(&runnable_jobs, katom, i);

		while (!list_empty(&runnable_jobs)) {
			kbase_jd_atom *node = list_entry(runnable_jobs.prev, kbase_jd_atom, dep_item[0]);
			list_del(runnable_jobs.prev);

			KBASE_DEBUG_ASSERT(node->status != KBASE_JD_ATOM_STATE_UNUSED);

			if (katom->event_code == BASE_JD_EVENT_DONE) {
				need_to_try_schedule_context |= jd_run_atom(node);
			} else {
				node->event_code = katom->event_code;
				node->status = KBASE_JD_ATOM_STATE_COMPLETED;

				if (node->core_req & BASE_JD_REQ_SOFT_JOB) {
					/* If this is a fence wait then remove it from the list of sync waiters. */
					if ( BASE_JD_REQ_SOFT_FENCE_WAIT == node->core_req )
						list_del(&node->dep_item[0]);

					kbase_finish_soft_job(node);
				}
			}

			if (node->status == KBASE_JD_ATOM_STATE_COMPLETED)
				list_add_tail(&node->dep_item[0], &completed_jobs);
		}

		if (katom->core_req & BASE_JD_REQ_EXTERNAL_RESOURCES)
			kbase_jd_post_external_resources(katom);

		kbase_event_post(kctx, katom);

		/* Decrement and check the TOTAL number of jobs. This includes
		 * those not tracked by the scheduler: 'not ready to run' and
		 * 'dependency-only' jobs. */
		if (--kctx->jctx.job_nr == 0)
			wake_up(&kctx->jctx.zero_jobs_wait);	/* All events are safely queued now, and we can signal any waiter
								 * that we've got no more jobs (so we can be safely terminated) */
	}

	return need_to_try_schedule_context;
}

KBASE_EXPORT_TEST_API(jd_done_nolock)

#ifdef CONFIG_GPU_TRACEPOINTS
enum {
	CORE_REQ_DEP_ONLY,
	CORE_REQ_SOFT,
	CORE_REQ_COMPUTE,
	CORE_REQ_FRAGMENT,
	CORE_REQ_VERTEX,
	CORE_REQ_TILER,
	CORE_REQ_FRAGMENT_VERTEX,
	CORE_REQ_FRAGMENT_VERTEX_TILER,
	CORE_REQ_FRAGMENT_TILER,
	CORE_REQ_VERTEX_TILER,
	CORE_REQ_UNKNOWN
};
static const char * const core_req_strings[] = {
	"Dependency Only Job",
	"Soft Job",
	"Compute Shader Job",
	"Fragment Shader Job",
	"Vertex/Geometry Shader Job",
	"Tiler Job",
	"Fragment Shader + Vertex/Geometry Shader Job",
	"Fragment Shader + Vertex/Geometry Shader Job + Tiler Job",
	"Fragment Shader + Tiler Job",
	"Vertex/Geometry Shader Job + Tiler Job",
	"Unknown Job"
};
static const char *kbasep_map_core_reqs_to_string(base_jd_core_req core_req)
{
	if (core_req & BASE_JD_REQ_SOFT_JOB)
		return core_req_strings[CORE_REQ_SOFT];
	if (core_req & BASE_JD_REQ_ONLY_COMPUTE)
		return core_req_strings[CORE_REQ_COMPUTE];
	switch (core_req & (BASE_JD_REQ_FS | BASE_JD_REQ_CS | BASE_JD_REQ_T)) {
	case BASE_JD_REQ_DEP:
		return core_req_strings[CORE_REQ_DEP_ONLY];
	case BASE_JD_REQ_FS:
		return core_req_strings[CORE_REQ_FRAGMENT];
	case BASE_JD_REQ_CS:
		return core_req_strings[CORE_REQ_VERTEX];
	case BASE_JD_REQ_T:
		return core_req_strings[CORE_REQ_TILER];
	case (BASE_JD_REQ_FS | BASE_JD_REQ_CS):
		return core_req_strings[CORE_REQ_FRAGMENT_VERTEX];
	case (BASE_JD_REQ_FS | BASE_JD_REQ_T):
		return core_req_strings[CORE_REQ_FRAGMENT_TILER];
	case (BASE_JD_REQ_CS | BASE_JD_REQ_T):
		return core_req_strings[CORE_REQ_VERTEX_TILER];
	case (BASE_JD_REQ_FS | BASE_JD_REQ_CS | BASE_JD_REQ_T):
		return core_req_strings[CORE_REQ_FRAGMENT_VERTEX_TILER];
	}
	return core_req_strings[CORE_REQ_UNKNOWN];
}
#endif

static mali_bool jd_submit_atom(kbase_context *kctx, const base_jd_atom_v2 *user_atom)
{
	kbase_jd_context *jctx = &kctx->jctx;
	kbase_jd_atom *katom;
	base_jd_core_req core_req;
	base_atom_id atom_number = user_atom->atom_number;
	int queued = 0;
	int i;
	mali_bool ret;

	katom = &jctx->atoms[atom_number];

	mutex_lock(&jctx->lock);
	while (katom->status != KBASE_JD_ATOM_STATE_UNUSED) {
		/* Atom number is already in use, wait for the atom to complete */
		mutex_unlock(&jctx->lock);
		
		/* This thread will wait for the atom to complete. Due to thread scheduling we are not sure that
		 * the other thread that owns the atom will also schedule the context, so we force the scheduler
		 * to be active and hence eventually schedule this context at some point later. 
		 */
		kbasep_js_try_schedule_head_ctx(kctx->kbdev);
		if (wait_event_killable(katom->completed, katom->status == KBASE_JD_ATOM_STATE_UNUSED)) {
			/* We're being killed so the result code doesn't really matter */
			return MALI_FALSE;
		}
		mutex_lock(&jctx->lock);
	}

	/* Update the TOTAL number of jobs. This includes those not tracked by
	 * the scheduler: 'not ready to run' and 'dependency-only' jobs. */
	jctx->job_nr++;

	core_req = user_atom->core_req;

	katom->udata = user_atom->udata;
	katom->kctx = kctx;
	katom->nr_extres = user_atom->nr_extres;
	katom->extres = NULL;
	katom->device_nr = user_atom->device_nr;
	katom->affinity = 0;
	katom->jc = user_atom->jc;
	katom->coreref_state = KBASE_ATOM_COREREF_STATE_NO_CORES_REQUESTED;
	katom->core_req = core_req;
	katom->nice_prio = user_atom->prio;
	katom->atom_flags = 0;

#ifdef CONFIG_KDS
	/* Start by assuming that the KDS dependencies are satisfied,
	 * kbase_jd_pre_external_resources will correct this if there are dependencies */
	katom->kds_dep_satisfied = MALI_TRUE;
	katom->kds_rset = NULL;
#endif				/* CONFIG_KDS */

	/* Add dependencies */
	for (i = 0; i < 2; i++) {
		int dep_atom_number = user_atom->pre_dep[i];
		katom->dep_atom[i] = NULL;
		if (dep_atom_number) {
			kbase_jd_atom *dep_atom = &jctx->atoms[dep_atom_number];

			if (dep_atom->status == KBASE_JD_ATOM_STATE_UNUSED || dep_atom->status == KBASE_JD_ATOM_STATE_COMPLETED) {
				if (dep_atom->event_code != BASE_JD_EVENT_DONE) {
					if (i == 1 && katom->dep_atom[0]) {
						/* Remove the previous dependency */
						list_del(&katom->dep_item[0]);
						katom->dep_atom[0] = NULL;
					}
					/* Atom has completed, propagate the error code if any */
					katom->event_code = dep_atom->event_code;
					katom->status = KBASE_JD_ATOM_STATE_QUEUED;
					ret = jd_done_nolock(katom);
					goto out;
				}
			} else {
				/* Atom is in progress, add this atom to the list */
				list_add_tail(&katom->dep_item[i], &dep_atom->dep_head[i]);
				katom->dep_atom[i] = dep_atom;
				queued = 1;
			}
		}
	}

	/* These must occur after the above loop to ensure that an atom that
	 * depends on a previous atom with the same number behaves as expected */
	katom->event_code = BASE_JD_EVENT_DONE;
	katom->status = KBASE_JD_ATOM_STATE_QUEUED;

	/* Reject atoms with job chain = NULL, as these cause issues with soft-stop */
	if (0 == katom->jc && (katom->core_req & BASEP_JD_REQ_ATOM_TYPE) != BASE_JD_REQ_DEP)
	{
		KBASE_DEBUG_PRINT_WARN(KBASE_JD, "Rejecting atom with jc = NULL");
		katom->event_code = BASE_JD_EVENT_JOB_INVALID;
		ret = jd_done_nolock(katom);
		goto out;
	}

	/*
	 * If the priority is increased we need to check the caller has security caps to do this, if
	 * priority is decreased then this is ok as the result will have no negative impact on other
	 * processes running.
	 */
	if (0 > katom->nice_prio) {
		mali_bool access_allowed;
		access_allowed = kbase_security_has_capability(kctx, KBASE_SEC_MODIFY_PRIORITY, KBASE_SEC_FLAG_NOAUDIT);
		if (!access_allowed) {
			/* For unprivileged processes - a negative priority is interpreted as zero */
			katom->nice_prio = 0;
		}
	}

	/* Scale priority range to use NICE range */
	if (katom->nice_prio) {
		/* Remove sign for calculation */
		int nice_priority = katom->nice_prio + 128;
		/* Fixed point maths to scale from ..255 to 0..39 (NICE range with +20 offset) */
		katom->nice_prio = (((20 << 16) / 128) * nice_priority) >> 16;
	}

	if (katom->core_req & BASE_JD_REQ_EXTERNAL_RESOURCES) {
		/* handle what we need to do to access the external resources */
		if (MALI_ERROR_NONE != kbase_jd_pre_external_resources(katom, user_atom)) {
			/* setup failed (no access, bad resource, unknown resource types, etc.) */
			katom->event_code = BASE_JD_EVENT_JOB_INVALID;
			ret = jd_done_nolock(katom);
			goto out;
		}
	}

	/* Initialize the jobscheduler policy for this atom. Function will
	 * return error if the atom is malformed.
	 *
	 * Soft-jobs never enter the job scheduler but have their own initialize method.
	 *
	 * If either fail then we immediately complete the atom with an error.
	 */
	if ((katom->core_req & BASE_JD_REQ_SOFT_JOB) == 0) {
		kbasep_js_policy *js_policy = &(kctx->kbdev->js_data.policy);
		if (MALI_ERROR_NONE != kbasep_js_policy_init_job(js_policy, kctx, katom)) {
			katom->event_code = BASE_JD_EVENT_JOB_INVALID;
			ret = jd_done_nolock(katom);
			goto out;
		}
	} else {
		/* Soft-job */
		if (MALI_ERROR_NONE != kbase_prepare_soft_job(katom)) {
			katom->event_code = BASE_JD_EVENT_JOB_INVALID;
			ret = jd_done_nolock(katom);
			goto out;
		}
	}

#ifdef CONFIG_GPU_TRACEPOINTS
	katom->work_id = atomic_inc_return(&jctx->work_id);
	trace_gpu_job_enqueue((u32)kctx, katom->work_id, kbasep_map_core_reqs_to_string(katom->core_req));
#endif

	if (queued) {
		ret = MALI_FALSE;
		goto out;
	}
#ifdef CONFIG_KDS
	if (!katom->kds_dep_satisfied) {
		/* Queue atom due to KDS dependency */
		ret = MALI_FALSE;
		goto out;
	}
#endif				/* CONFIG_KDS */

	if (katom->core_req & BASE_JD_REQ_SOFT_JOB) {
		if (kbase_process_soft_job(katom) == 0) {
			kbase_finish_soft_job(katom);
			ret = jd_done_nolock(katom);
			goto out;
		}
		/* The job has not yet completed */
		list_add_tail(&katom->dep_item[0], &kctx->waiting_soft_jobs);
		ret = MALI_FALSE;
	} else if ((katom->core_req & BASEP_JD_REQ_ATOM_TYPE) != BASE_JD_REQ_DEP) {
		katom->status = KBASE_JD_ATOM_STATE_IN_JS;
		ret = kbasep_js_add_job(kctx, katom);
	} else {
		/* This is a pure dependency. Resolve it immediately */
		ret = jd_done_nolock(katom);
	}

 out:
	mutex_unlock(&jctx->lock);
	return ret;
}

mali_error kbase_jd_submit(kbase_context *kctx, const kbase_uk_job_submit *submit_data)
{
	mali_error err = MALI_ERROR_NONE;
	int i;
	mali_bool need_to_try_schedule_context = MALI_FALSE;
	kbase_device *kbdev;
	void *user_addr;

	/*
	 * kbase_jd_submit isn't expected to fail and so all errors with the jobs
	 * are reported by immediately falling them (through event system)
	 */
	kbdev = kctx->kbdev;

	beenthere("%s", "Enter");

	if ((kctx->jctx.sched_info.ctx.flags & KBASE_CTX_FLAG_SUBMIT_DISABLED) != 0) {
		KBASE_DEBUG_PRINT_ERROR(KBASE_JD, "Attempt to submit to a context that has SUBMIT_DISABLED set on it");
		return MALI_ERROR_FUNCTION_FAILED;
	}

	if (submit_data->stride != sizeof(base_jd_atom_v2)) {
		KBASE_DEBUG_PRINT_ERROR(KBASE_JD, "Stride passed to job_submit doesn't match kernel");
		return MALI_ERROR_FUNCTION_FAILED;
	}

	user_addr = get_compat_pointer(&submit_data->addr);

	KBASE_TIMELINE_ATOMS_IN_FLIGHT(kctx, atomic_add_return(submit_data->nr_atoms, &kctx->timeline.jd_atoms_in_flight));

	for (i = 0; i < submit_data->nr_atoms; i++) {
		base_jd_atom_v2 user_atom;

		if (copy_from_user(&user_atom, user_addr, sizeof(user_atom)) != 0) {
			err = MALI_ERROR_FUNCTION_FAILED;
			KBASE_TIMELINE_ATOMS_IN_FLIGHT(kctx, atomic_sub_return(submit_data->nr_atoms - i, &kctx->timeline.jd_atoms_in_flight));
			break;
		}

		user_addr = (void *)((uintptr_t) user_addr + submit_data->stride);

		need_to_try_schedule_context |= jd_submit_atom(kctx, &user_atom);
	}

	if (need_to_try_schedule_context)
		kbasep_js_try_schedule_head_ctx(kbdev);

	return err;
}

KBASE_EXPORT_TEST_API(kbase_jd_submit)

static void kbasep_jd_cacheclean(kbase_device *kbdev)
{
	/* Limit the number of loops to avoid a hang if the interrupt is missed */
	u32 max_loops = KBASE_CLEAN_CACHE_MAX_LOOPS;

	mutex_lock(&kbdev->cacheclean_lock);

	/* use GPU_COMMAND completion solution */
	/* clean & invalidate the caches */
	KBASE_TRACE_ADD(kbdev, CORE_GPU_CLEAN_INV_CACHES, NULL, NULL, 0u, 0);
	kbase_reg_write(kbdev, GPU_CONTROL_REG(GPU_COMMAND), GPU_COMMAND_CLEAN_INV_CACHES, NULL);

	/* wait for cache flush to complete before continuing */
	while (--max_loops && (kbase_reg_read(kbdev, GPU_CONTROL_REG(GPU_IRQ_RAWSTAT), NULL) & CLEAN_CACHES_COMPLETED) == 0)
		;

	/* clear the CLEAN_CACHES_COMPLETED irq */
	KBASE_TRACE_ADD(kbdev, CORE_GPU_IRQ_CLEAR, NULL, NULL, 0u, CLEAN_CACHES_COMPLETED);
	kbase_reg_write(kbdev, GPU_CONTROL_REG(GPU_IRQ_CLEAR), CLEAN_CACHES_COMPLETED, NULL);
	KBASE_DEBUG_ASSERT_MSG(kbdev->hwcnt.state != KBASE_INSTR_STATE_CLEANING,
	    "Instrumentation code was cleaning caches, but Job Management code cleared their IRQ - Instrumentation code will now hang.");

	mutex_unlock(&kbdev->cacheclean_lock);
}

/**
 * This function:
 * - requeues the job from the runpool (if it was soft-stopped/removed from NEXT registers)
 * - removes it from the system if it finished/failed/was cancelled.
 * - resolves dependencies to add dependent jobs to the context, potentially starting them if necessary (which may add more references to the context)
 * - releases the reference to the context from the no-longer-running job.
 * - Handles retrying submission outside of IRQ context if it failed from within IRQ context.
 */
static void jd_done_worker(struct work_struct *data)
{
	kbase_jd_atom *katom = container_of(data, kbase_jd_atom, work);
	kbase_jd_context *jctx;
	kbase_context *kctx;
	kbasep_js_kctx_info *js_kctx_info;
	kbasep_js_policy *js_policy;
	kbase_device *kbdev;
	kbasep_js_device_data *js_devdata;
	u64 cache_jc = katom->jc;
	kbasep_js_atom_retained_state katom_retained_state;

	/* Soft jobs should never reach this function */
	KBASE_DEBUG_ASSERT((katom->core_req & BASE_JD_REQ_SOFT_JOB) == 0);

	kctx = katom->kctx;
	jctx = &kctx->jctx;
	kbdev = kctx->kbdev;
	js_kctx_info = &kctx->jctx.sched_info;

	js_devdata = &kbdev->js_data;
	js_policy = &kbdev->js_data.policy;

	KBASE_TRACE_ADD(kbdev, JD_DONE_WORKER, kctx, katom, katom->jc, 0);
	/*
	 * Begin transaction on JD context and JS context
	 */
	mutex_lock(&jctx->lock);
	mutex_lock(&js_kctx_info->ctx.jsctx_mutex);

	/* This worker only gets called on contexts that are scheduled *in*. This is
	 * because it only happens in response to an IRQ from a job that was
	 * running.
	 */
	KBASE_DEBUG_ASSERT(js_kctx_info->ctx.is_scheduled != MALI_FALSE);

	if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_6787) && katom->event_code != BASE_JD_EVENT_DONE && !(katom->event_code & BASE_JD_SW_EVENT))
		kbasep_jd_cacheclean(kbdev);  /* cache flush when jobs complete with non-done codes */
	else if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_10676)) {
		if (kbdev->gpu_props.num_core_groups > 1 && 
		    !(katom->affinity & kbdev->gpu_props.props.coherency_info.group[0].core_mask) &&
		    (katom->affinity & kbdev->gpu_props.props.coherency_info.group[1].core_mask)) {
			KBASE_DEBUG_PRINT_INFO(KBASE_JD, "JD: Flushing cache due to PRLAM-10676\n");
			kbasep_jd_cacheclean(kbdev);
		}
	}

	if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_10969)            &&
	    (katom->core_req & BASE_JD_REQ_FS)                        &&
	    katom->event_code == BASE_JD_EVENT_TILE_RANGE_FAULT       &&
	    (katom->atom_flags & KBASE_KATOM_FLAG_BEEN_SOFT_STOPPPED) &&
	    !(katom->atom_flags & KBASE_KATOM_FLAGS_RERUN)){
		KBASE_DEBUG_PRINT_INFO(KBASE_JD,
				       " Soft-stopped fragment shader job got a TILE_RANGE_FAULT." \
				       "Possible HW issue, trying SW workaround \n " );
		if (kbasep_10969_workaround_clamp_coordinates(katom)){
			/* The job had a TILE_RANGE_FAULT after was soft-stopped.
			 * Due to an HW issue we try to execute the job
			 * again.
			 */
			KBASE_DEBUG_PRINT_INFO(KBASE_JD, " Clamping has been executed, try to rerun the job \n" );
			katom->event_code = BASE_JD_EVENT_STOPPED;
			katom->atom_flags |= KBASE_KATOM_FLAGS_RERUN;

			/* The atom will be requeued, but requeing does not submit more
			 * jobs. If this was the last job, we must also ensure that more
			 * jobs will be run on slot 0 - this is a Fragment job. */
			kbasep_js_set_job_retry_submit_slot(katom, 0);
		}
	}

	/* If job was rejected due to BASE_JD_EVENT_PM_EVENT but was not
	 * specifically targeting core group 1, then re-submit targeting core
	 * group 0 */
	if (katom->event_code == BASE_JD_EVENT_PM_EVENT && !(katom->core_req & BASE_JD_REQ_SPECIFIC_COHERENT_GROUP)) {
		katom->event_code = BASE_JD_EVENT_STOPPED;
		/* Don't need to worry about any previously set retry-slot - it's
		 * impossible for it to have been set previously, because we guarantee
		 * kbase_jd_done() was called with done_code==0 on this atom */
		kbasep_js_set_job_retry_submit_slot(katom, 1);
	}

	if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_8316))
		kbase_as_poking_timer_release_atom(kbdev, kctx, katom);

	/* Release cores this job was using (this might power down unused cores, and
	 * cause extra latency if a job submitted here - such as depenedent jobs -
	 * would use those cores) */
	kbasep_js_job_check_deref_cores(kbdev, katom);

	/* Retain state before the katom disappears */
	kbasep_js_atom_retained_state_copy(&katom_retained_state, katom);

	if (!kbasep_js_has_atom_finished(&katom_retained_state)) {
		unsigned long flags;
		/* Requeue the atom on soft-stop / removed from NEXT registers */
		KBASE_DEBUG_PRINT_INFO(KBASE_JM, "JS: Soft Stopped/Removed from next on Ctx %p; Requeuing", kctx);

		mutex_lock(&js_devdata->runpool_mutex);
		kbasep_js_clear_job_retry_submit(katom);

		KBASE_TIMELINE_ATOM_READY(kctx, kbase_jd_atom_id(kctx, katom));
		spin_lock_irqsave(&js_devdata->runpool_irq.lock, flags);
		kbasep_js_policy_enqueue_job(js_policy, katom);
		spin_unlock_irqrestore(&js_devdata->runpool_irq.lock, flags);

		/* A STOPPED/REMOVED job must cause a re-submit to happen, in case it
		 * was the last job left. Crucially, work items on work queues can run
		 * out of order e.g. on different CPUs, so being able to submit from
		 * the IRQ handler is not a good indication that we don't need to run
		 * jobs; the submitted job could be processed on the work-queue
		 * *before* the stopped job, even though it was submitted after. */
		{
			int tmp;
			KBASE_DEBUG_ASSERT(kbasep_js_get_atom_retry_submit_slot(&katom_retained_state, &tmp) != MALI_FALSE);
			CSTD_UNUSED(tmp);
		}

		mutex_unlock(&js_devdata->runpool_mutex);
		mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
	} else {
		/* Remove the job from the system for all other reasons */
		mali_bool need_to_try_schedule_context;

		kbasep_js_remove_job(kbdev, kctx, katom);
		mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
		/* jd_done_nolock() requires the jsctx_mutex lock to be dropped */

		need_to_try_schedule_context = jd_done_nolock(katom);

		/* This ctx is already scheduled in, so return value guarenteed FALSE */
		KBASE_DEBUG_ASSERT(need_to_try_schedule_context == MALI_FALSE);
	}
	/* katom may have been freed now, do not use! */

	/*
	 * Transaction complete
	 */
	mutex_unlock(&jctx->lock);

	/* Job is now no longer running, so can now safely release the context
	 * reference, and handle any actions that were logged against the atom's retained state */
	kbasep_js_runpool_release_ctx_and_katom_retained_state(kbdev, kctx, &katom_retained_state);

	KBASE_TRACE_ADD(kbdev, JD_DONE_WORKER_END, kctx, NULL, cache_jc, 0);
}

/**
 * Work queue job cancel function
 * Only called as part of 'Zapping' a context (which occurs on termination)
 * Operates serially with the jd_done_worker() on the work queue.
 *
 * This can only be called on contexts that aren't scheduled.
 *
 * @note We don't need to release most of the resources that would occur on
 * kbase_jd_done() or jd_done_worker(), because the atoms here must not be
 * running (by virtue of only being called on contexts that aren't
 * scheduled). The only resources that are an exception to this are:
 * - those held by kbasep_js_job_check_ref_cores(), because these resources are
 *   held for non-running atoms as well as running atoms.
 */
static void jd_cancel_worker(struct work_struct *data)
{
	kbase_jd_atom *katom = container_of(data, kbase_jd_atom, work);
	kbase_jd_context *jctx;
	kbase_context *kctx;
	kbasep_js_kctx_info *js_kctx_info;
	mali_bool need_to_try_schedule_context;
	kbase_device *kbdev;

	/* Soft jobs should never reach this function */
	KBASE_DEBUG_ASSERT((katom->core_req & BASE_JD_REQ_SOFT_JOB) == 0);

	kctx = katom->kctx;
	kbdev = kctx->kbdev;
	jctx = &kctx->jctx;
	js_kctx_info = &kctx->jctx.sched_info;

	KBASE_TRACE_ADD(kbdev, JD_CANCEL_WORKER, kctx, katom, katom->jc, 0);

	/* This only gets called on contexts that are scheduled out. Hence, we must
	 * make sure we don't de-ref the number of running jobs (there aren't
	 * any), nor must we try to schedule out the context (it's already
	 * scheduled out).
	 */
	KBASE_DEBUG_ASSERT(js_kctx_info->ctx.is_scheduled == MALI_FALSE);

	/* Release cores this job was using (this might power down unused cores) */
	kbasep_js_job_check_deref_cores(kctx->kbdev, katom);

	/* Scheduler: Remove the job from the system */
	mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
	kbasep_js_remove_cancelled_job(kbdev, kctx, katom);
	mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);

	mutex_lock(&jctx->lock);

	need_to_try_schedule_context = jd_done_nolock(katom);
	/* Because we're zapping, we're not adding any more jobs to this ctx, so no need to
	 * schedule the context. There's also no need for the jsctx_mutex to have been taken
	 * around this too. */
	KBASE_DEBUG_ASSERT(need_to_try_schedule_context == MALI_FALSE);

	/* katom may have been freed now, do not use! */
	mutex_unlock(&jctx->lock);

}

/**
 * @brief Complete a job that has been removed from the Hardware
 *
 * This must be used whenever a job has been removed from the Hardware, e.g.:
 * - An IRQ indicates that the job finished (for both error and 'done' codes)
 * - The job was evicted from the JSn_HEAD_NEXT registers during a Soft/Hard stop.
 *
 * Some work is carried out immediately, and the rest is deferred onto a workqueue
 *
 * This can be called safely from atomic context.
 *
 * The caller must hold kbasep_js_device_data::runpool_irq::lock
 *
 */
void kbase_jd_done(kbase_jd_atom *katom, int slot_nr, ktime_t *end_timestamp,
                   kbasep_js_atom_done_code done_code)
{
	kbase_context *kctx;
	kbase_device *kbdev;
	KBASE_DEBUG_ASSERT(katom);
	kctx = katom->kctx;
	KBASE_DEBUG_ASSERT(kctx);
	kbdev = kctx->kbdev;
	KBASE_DEBUG_ASSERT(kbdev);

	if (done_code & KBASE_JS_ATOM_DONE_EVICTED_FROM_NEXT)
		katom->event_code = BASE_JD_EVENT_REMOVED_FROM_NEXT;

	kbase_timeline_job_slot_done(kbdev, kctx, katom, slot_nr, done_code);

	KBASE_TRACE_ADD(kbdev, JD_DONE, kctx, katom, katom->jc, 0);

	kbasep_js_job_done_slot_irq(katom, slot_nr, end_timestamp, done_code);

	katom->slot_nr = slot_nr;

	KBASE_DEBUG_ASSERT(0 == object_is_on_stack(&katom->work));
	INIT_WORK(&katom->work, jd_done_worker);
	queue_work(kctx->jctx.job_done_wq, &katom->work);
}

KBASE_EXPORT_TEST_API(kbase_jd_done)

void kbase_jd_cancel(kbase_device *kbdev, kbase_jd_atom *katom)
{
	kbase_context *kctx;
	kbasep_js_kctx_info *js_kctx_info;
	KBASE_DEBUG_ASSERT(NULL != kbdev);
	KBASE_DEBUG_ASSERT(NULL != katom);
	kctx = katom->kctx;
	KBASE_DEBUG_ASSERT(NULL != kctx);

	js_kctx_info = &kctx->jctx.sched_info;

	KBASE_TRACE_ADD(kbdev, JD_CANCEL, kctx, katom, katom->jc, 0);

	/* This should only be done from a context that is not scheduled */
	KBASE_DEBUG_ASSERT(js_kctx_info->ctx.is_scheduled == MALI_FALSE);

	katom->event_code = BASE_JD_EVENT_JOB_CANCELLED;

	KBASE_DEBUG_ASSERT(0 == object_is_on_stack(&katom->work));
	INIT_WORK(&katom->work, jd_cancel_worker);
	queue_work(kctx->jctx.job_done_wq, &katom->work);
}

typedef struct zap_reset_data {
	/* The stages are:
	 * 1. The timer has never been called
	 * 2. The zap has timed out, all slots are soft-stopped - the GPU reset will happen.
	 *    The GPU has been reset when kbdev->reset_waitq is signalled
	 *
	 * (-1 - The timer has been cancelled)
	 */
	int stage;
	kbase_device *kbdev;
	struct hrtimer timer;
	spinlock_t lock;
} zap_reset_data;

static enum hrtimer_restart zap_timeout_callback(struct hrtimer *timer)
{
	zap_reset_data *reset_data = container_of(timer, zap_reset_data, timer);
	kbase_device *kbdev = reset_data->kbdev;
	unsigned long flags;

	spin_lock_irqsave(&reset_data->lock, flags);

	if (reset_data->stage == -1)
		goto out;

	if (kbase_prepare_to_reset_gpu(kbdev)) {
		KBASE_DEBUG_PRINT_ERROR(KBASE_JD, "Issueing GPU soft-reset because jobs failed to be killed (within %d ms) as part of context termination (e.g. process exit)\n", ZAP_TIMEOUT);
		kbase_reset_gpu(kbdev);
	}

	reset_data->stage = 2;

 out:
	spin_unlock_irqrestore(&reset_data->lock, flags);

	return HRTIMER_NORESTART;
}

void kbase_jd_zap_context(kbase_context *kctx)
{
	kbase_jd_atom *katom;
	struct list_head *entry;
	kbase_device *kbdev;
	zap_reset_data reset_data;
	unsigned long flags;

	KBASE_DEBUG_ASSERT(kctx);

	kbdev = kctx->kbdev;

	KBASE_TRACE_ADD(kbdev, JD_ZAP_CONTEXT, kctx, NULL, 0u, 0u);
	kbase_job_zap_context(kctx);

	mutex_lock(&kctx->jctx.lock);

	/*
	 * While holding the kbase_jd_context lock clean up jobs which are known to kbase but are
	 * queued outside the job scheduler.
	 */

	list_for_each(entry, &kctx->waiting_soft_jobs) {
		katom = list_entry(entry, kbase_jd_atom, dep_item[0]);

		kbase_cancel_soft_job(katom);
	}

#ifdef CONFIG_KDS

	/* For each job waiting on a kds resource, cancel the wait and force the job to
	 * complete early, this is done so that we don't leave jobs outstanding waiting
	 * on kds resources which may never be released when contexts are zapped, resulting
	 * in a hang.
	 *
	 * Note that we can safely iterate over the list as the kbase_jd_context lock is held,
	 * this prevents items being removed when calling job_done_nolock in kbase_cancel_kds_wait_job.
	 */

	list_for_each( entry, &kctx->waiting_kds_resource) {
		katom = list_entry(entry, kbase_jd_atom, node);

		kbase_cancel_kds_wait_job(katom);
	}
#endif

	mutex_unlock(&kctx->jctx.lock);

	hrtimer_init_on_stack(&reset_data.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
	reset_data.timer.function = zap_timeout_callback;

	spin_lock_init(&reset_data.lock);

	reset_data.kbdev = kbdev;
	reset_data.stage = 1;

	hrtimer_start(&reset_data.timer, HR_TIMER_DELAY_MSEC(ZAP_TIMEOUT), HRTIMER_MODE_REL);

	/* Wait for all jobs to finish, and for the context to be not-scheduled
	 * (due to kbase_job_zap_context(), we also guarentee it's not in the JS
	 * policy queue either */
	wait_event(kctx->jctx.zero_jobs_wait, kctx->jctx.job_nr == 0);
	wait_event(kctx->jctx.sched_info.ctx.is_scheduled_wait, kctx->jctx.sched_info.ctx.is_scheduled == MALI_FALSE);

	spin_lock_irqsave(&reset_data.lock, flags);
	if (reset_data.stage == 1) {
		/* The timer hasn't run yet - so cancel it */
		reset_data.stage = -1;
	}
	spin_unlock_irqrestore(&reset_data.lock, flags);

	hrtimer_cancel(&reset_data.timer);

	if (reset_data.stage == 2) {
		/* The reset has already started.
		 * Wait for the reset to complete
		 */
		wait_event(kbdev->reset_wait, atomic_read(&kbdev->reset_gpu) == KBASE_RESET_GPU_NOT_PENDING);
	}
	destroy_hrtimer_on_stack(&reset_data.timer);

	KBASE_DEBUG_PRINT_INFO(KBASE_JM, "Zap: Finished Context %p", kctx);

	/* Ensure that the signallers of the waitqs have finished */
	mutex_lock(&kctx->jctx.lock);
	mutex_lock(&kctx->jctx.sched_info.ctx.jsctx_mutex);
	mutex_unlock(&kctx->jctx.sched_info.ctx.jsctx_mutex);
	mutex_unlock(&kctx->jctx.lock);
}

KBASE_EXPORT_TEST_API(kbase_jd_zap_context)

mali_error kbase_jd_init(kbase_context *kctx)
{
	int i;
	mali_error mali_err = MALI_ERROR_NONE;
#ifdef CONFIG_KDS
	int err;
#endif				/* CONFIG_KDS */

	KBASE_DEBUG_ASSERT(kctx);

	kctx->jctx.job_done_wq = alloc_workqueue("mali_jd", 0, 1);
	if (NULL == kctx->jctx.job_done_wq) {
		mali_err = MALI_ERROR_OUT_OF_MEMORY;
		goto out1;
	}

	for (i = 0; i < BASE_JD_ATOM_COUNT; i++) {
		init_waitqueue_head(&kctx->jctx.atoms[i].completed);

		INIT_LIST_HEAD(&kctx->jctx.atoms[i].dep_head[0]);
		INIT_LIST_HEAD(&kctx->jctx.atoms[i].dep_head[1]);

		/* Catch userspace attempting to use an atom which doesn't exist as a pre-dependency */
		kctx->jctx.atoms[i].event_code = BASE_JD_EVENT_JOB_INVALID;
		kctx->jctx.atoms[i].status = KBASE_JD_ATOM_STATE_UNUSED;
	}

	mutex_init(&kctx->jctx.lock);

	init_waitqueue_head(&kctx->jctx.zero_jobs_wait);

	spin_lock_init(&kctx->jctx.tb_lock);

#ifdef CONFIG_KDS
	err = kds_callback_init(&kctx->jctx.kds_cb, 0, kds_dep_clear);
	if (0 != err) {
		mali_err = MALI_ERROR_FUNCTION_FAILED;
		goto out2;
	}
#endif				/* CONFIG_KDS */

	kctx->jctx.job_nr = 0;

	return MALI_ERROR_NONE;

#ifdef CONFIG_KDS
 out2:
	destroy_workqueue(kctx->jctx.job_done_wq);
#endif				/* CONFIG_KDS */
 out1:
	return mali_err;
}

KBASE_EXPORT_TEST_API(kbase_jd_init)

void kbase_jd_exit(kbase_context *kctx)
{
	KBASE_DEBUG_ASSERT(kctx);

#ifdef CONFIG_KDS
	kds_callback_term(&kctx->jctx.kds_cb);
#endif				/* CONFIG_KDS */
	/* Work queue is emptied by this */
	destroy_workqueue(kctx->jctx.job_done_wq);
}

KBASE_EXPORT_TEST_API(kbase_jd_exit)