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Merge tag 'linux-watchdog-6.14-rc1' of git://www.linux-watchdog.org/linux-watchdog
[linux.git] / drivers / gpu / drm / v3d / v3d_submit.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2014-2018 Broadcom
4  * Copyright (C) 2023 Raspberry Pi
5  */
6
7 #include <drm/drm_syncobj.h>
8
9 #include "v3d_drv.h"
10 #include "v3d_regs.h"
11 #include "v3d_trace.h"
12
13 /* Takes the reservation lock on all the BOs being referenced, so that
14  * we can attach fences and update the reservations after pushing the job
15  * to the queue.
16  *
17  * We don't lock the RCL the tile alloc/state BOs, or overflow memory
18  * (all of which are on render->unref_list). They're entirely private
19  * to v3d, so we don't attach dma-buf fences to them.
20  */
21 static int
22 v3d_lock_bo_reservations(struct v3d_job *job,
23                          struct ww_acquire_ctx *acquire_ctx)
24 {
25         int i, ret;
26
27         ret = drm_gem_lock_reservations(job->bo, job->bo_count, acquire_ctx);
28         if (ret)
29                 return ret;
30
31         for (i = 0; i < job->bo_count; i++) {
32                 ret = dma_resv_reserve_fences(job->bo[i]->resv, 1);
33                 if (ret)
34                         goto fail;
35
36                 ret = drm_sched_job_add_implicit_dependencies(&job->base,
37                                                               job->bo[i], true);
38                 if (ret)
39                         goto fail;
40         }
41
42         return 0;
43
44 fail:
45         drm_gem_unlock_reservations(job->bo, job->bo_count, acquire_ctx);
46         return ret;
47 }
48
49 /**
50  * v3d_lookup_bos() - Sets up job->bo[] with the GEM objects
51  * referenced by the job.
52  * @dev: DRM device
53  * @file_priv: DRM file for this fd
54  * @job: V3D job being set up
55  * @bo_handles: GEM handles
56  * @bo_count: Number of GEM handles passed in
57  *
58  * The command validator needs to reference BOs by their index within
59  * the submitted job's BO list. This does the validation of the job's
60  * BO list and reference counting for the lifetime of the job.
61  *
62  * Note that this function doesn't need to unreference the BOs on
63  * failure, because that will happen at `v3d_job_free()`.
64  */
65 static int
66 v3d_lookup_bos(struct drm_device *dev,
67                struct drm_file *file_priv,
68                struct v3d_job *job,
69                u64 bo_handles,
70                u32 bo_count)
71 {
72         job->bo_count = bo_count;
73
74         if (!job->bo_count) {
75                 /* See comment on bo_index for why we have to check
76                  * this.
77                  */
78                 DRM_DEBUG("Rendering requires BOs\n");
79                 return -EINVAL;
80         }
81
82         return drm_gem_objects_lookup(file_priv,
83                                       (void __user *)(uintptr_t)bo_handles,
84                                       job->bo_count, &job->bo);
85 }
86
87 static void
88 v3d_job_free(struct kref *ref)
89 {
90         struct v3d_job *job = container_of(ref, struct v3d_job, refcount);
91         int i;
92
93         if (job->bo) {
94                 for (i = 0; i < job->bo_count; i++)
95                         drm_gem_object_put(job->bo[i]);
96                 kvfree(job->bo);
97         }
98
99         dma_fence_put(job->irq_fence);
100         dma_fence_put(job->done_fence);
101
102         if (job->perfmon)
103                 v3d_perfmon_put(job->perfmon);
104
105         kfree(job);
106 }
107
108 static void
109 v3d_render_job_free(struct kref *ref)
110 {
111         struct v3d_render_job *job = container_of(ref, struct v3d_render_job,
112                                                   base.refcount);
113         struct v3d_bo *bo, *save;
114
115         list_for_each_entry_safe(bo, save, &job->unref_list, unref_head) {
116                 drm_gem_object_put(&bo->base.base);
117         }
118
119         v3d_job_free(ref);
120 }
121
122 void v3d_job_cleanup(struct v3d_job *job)
123 {
124         if (!job)
125                 return;
126
127         drm_sched_job_cleanup(&job->base);
128         v3d_job_put(job);
129 }
130
131 void v3d_job_put(struct v3d_job *job)
132 {
133         if (!job)
134                 return;
135
136         kref_put(&job->refcount, job->free);
137 }
138
139 static int
140 v3d_job_allocate(void **container, size_t size)
141 {
142         *container = kcalloc(1, size, GFP_KERNEL);
143         if (!*container) {
144                 DRM_ERROR("Cannot allocate memory for V3D job.\n");
145                 return -ENOMEM;
146         }
147
148         return 0;
149 }
150
151 static void
152 v3d_job_deallocate(void **container)
153 {
154         kfree(*container);
155         *container = NULL;
156 }
157
158 static int
159 v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
160              struct v3d_job *job, void (*free)(struct kref *ref),
161              u32 in_sync, struct v3d_submit_ext *se, enum v3d_queue queue)
162 {
163         struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
164         bool has_multisync = se && (se->flags & DRM_V3D_EXT_ID_MULTI_SYNC);
165         int ret, i;
166
167         job->v3d = v3d;
168         job->free = free;
169         job->file = file_priv;
170
171         ret = drm_sched_job_init(&job->base, &v3d_priv->sched_entity[queue],
172                                  1, v3d_priv);
173         if (ret)
174                 return ret;
175
176         if (has_multisync) {
177                 if (se->in_sync_count && se->wait_stage == queue) {
178                         struct drm_v3d_sem __user *handle = u64_to_user_ptr(se->in_syncs);
179
180                         for (i = 0; i < se->in_sync_count; i++) {
181                                 struct drm_v3d_sem in;
182
183                                 if (copy_from_user(&in, handle++, sizeof(in))) {
184                                         ret = -EFAULT;
185                                         DRM_DEBUG("Failed to copy wait dep handle.\n");
186                                         goto fail_deps;
187                                 }
188                                 ret = drm_sched_job_add_syncobj_dependency(&job->base, file_priv, in.handle, 0);
189
190                                 // TODO: Investigate why this was filtered out for the IOCTL.
191                                 if (ret && ret != -ENOENT)
192                                         goto fail_deps;
193                         }
194                 }
195         } else {
196                 ret = drm_sched_job_add_syncobj_dependency(&job->base, file_priv, in_sync, 0);
197
198                 // TODO: Investigate why this was filtered out for the IOCTL.
199                 if (ret && ret != -ENOENT)
200                         goto fail_deps;
201         }
202
203         kref_init(&job->refcount);
204
205         return 0;
206
207 fail_deps:
208         drm_sched_job_cleanup(&job->base);
209         return ret;
210 }
211
212 static void
213 v3d_push_job(struct v3d_job *job)
214 {
215         drm_sched_job_arm(&job->base);
216
217         job->done_fence = dma_fence_get(&job->base.s_fence->finished);
218
219         /* put by scheduler job completion */
220         kref_get(&job->refcount);
221
222         drm_sched_entity_push_job(&job->base);
223 }
224
225 static void
226 v3d_attach_fences_and_unlock_reservation(struct drm_file *file_priv,
227                                          struct v3d_job *job,
228                                          struct ww_acquire_ctx *acquire_ctx,
229                                          u32 out_sync,
230                                          struct v3d_submit_ext *se,
231                                          struct dma_fence *done_fence)
232 {
233         struct drm_syncobj *sync_out;
234         bool has_multisync = se && (se->flags & DRM_V3D_EXT_ID_MULTI_SYNC);
235         int i;
236
237         for (i = 0; i < job->bo_count; i++) {
238                 /* XXX: Use shared fences for read-only objects. */
239                 dma_resv_add_fence(job->bo[i]->resv, job->done_fence,
240                                    DMA_RESV_USAGE_WRITE);
241         }
242
243         drm_gem_unlock_reservations(job->bo, job->bo_count, acquire_ctx);
244
245         /* Update the return sync object for the job */
246         /* If it only supports a single signal semaphore*/
247         if (!has_multisync) {
248                 sync_out = drm_syncobj_find(file_priv, out_sync);
249                 if (sync_out) {
250                         drm_syncobj_replace_fence(sync_out, done_fence);
251                         drm_syncobj_put(sync_out);
252                 }
253                 return;
254         }
255
256         /* If multiple semaphores extension is supported */
257         if (se->out_sync_count) {
258                 for (i = 0; i < se->out_sync_count; i++) {
259                         drm_syncobj_replace_fence(se->out_syncs[i].syncobj,
260                                                   done_fence);
261                         drm_syncobj_put(se->out_syncs[i].syncobj);
262                 }
263                 kvfree(se->out_syncs);
264         }
265 }
266
267 static int
268 v3d_setup_csd_jobs_and_bos(struct drm_file *file_priv,
269                            struct v3d_dev *v3d,
270                            struct drm_v3d_submit_csd *args,
271                            struct v3d_csd_job **job,
272                            struct v3d_job **clean_job,
273                            struct v3d_submit_ext *se,
274                            struct ww_acquire_ctx *acquire_ctx)
275 {
276         int ret;
277
278         ret = v3d_job_allocate((void *)job, sizeof(**job));
279         if (ret)
280                 return ret;
281
282         ret = v3d_job_init(v3d, file_priv, &(*job)->base,
283                            v3d_job_free, args->in_sync, se, V3D_CSD);
284         if (ret) {
285                 v3d_job_deallocate((void *)job);
286                 return ret;
287         }
288
289         ret = v3d_job_allocate((void *)clean_job, sizeof(**clean_job));
290         if (ret)
291                 return ret;
292
293         ret = v3d_job_init(v3d, file_priv, *clean_job,
294                            v3d_job_free, 0, NULL, V3D_CACHE_CLEAN);
295         if (ret) {
296                 v3d_job_deallocate((void *)clean_job);
297                 return ret;
298         }
299
300         (*job)->args = *args;
301
302         ret = v3d_lookup_bos(&v3d->drm, file_priv, *clean_job,
303                              args->bo_handles, args->bo_handle_count);
304         if (ret)
305                 return ret;
306
307         return v3d_lock_bo_reservations(*clean_job, acquire_ctx);
308 }
309
310 static void
311 v3d_put_multisync_post_deps(struct v3d_submit_ext *se)
312 {
313         unsigned int i;
314
315         if (!(se && se->out_sync_count))
316                 return;
317
318         for (i = 0; i < se->out_sync_count; i++)
319                 drm_syncobj_put(se->out_syncs[i].syncobj);
320         kvfree(se->out_syncs);
321 }
322
323 static int
324 v3d_get_multisync_post_deps(struct drm_file *file_priv,
325                             struct v3d_submit_ext *se,
326                             u32 count, u64 handles)
327 {
328         struct drm_v3d_sem __user *post_deps;
329         int i, ret;
330
331         if (!count)
332                 return 0;
333
334         se->out_syncs = (struct v3d_submit_outsync *)
335                         kvmalloc_array(count,
336                                        sizeof(struct v3d_submit_outsync),
337                                        GFP_KERNEL);
338         if (!se->out_syncs)
339                 return -ENOMEM;
340
341         post_deps = u64_to_user_ptr(handles);
342
343         for (i = 0; i < count; i++) {
344                 struct drm_v3d_sem out;
345
346                 if (copy_from_user(&out, post_deps++, sizeof(out))) {
347                         ret = -EFAULT;
348                         DRM_DEBUG("Failed to copy post dep handles\n");
349                         goto fail;
350                 }
351
352                 se->out_syncs[i].syncobj = drm_syncobj_find(file_priv,
353                                                             out.handle);
354                 if (!se->out_syncs[i].syncobj) {
355                         ret = -EINVAL;
356                         goto fail;
357                 }
358         }
359         se->out_sync_count = count;
360
361         return 0;
362
363 fail:
364         for (i--; i >= 0; i--)
365                 drm_syncobj_put(se->out_syncs[i].syncobj);
366         kvfree(se->out_syncs);
367
368         return ret;
369 }
370
371 /* Get data for multiple binary semaphores synchronization. Parse syncobj
372  * to be signaled when job completes (out_sync).
373  */
374 static int
375 v3d_get_multisync_submit_deps(struct drm_file *file_priv,
376                               struct drm_v3d_extension __user *ext,
377                               struct v3d_submit_ext *se)
378 {
379         struct drm_v3d_multi_sync multisync;
380         int ret;
381
382         if (se->in_sync_count || se->out_sync_count) {
383                 DRM_DEBUG("Two multisync extensions were added to the same job.");
384                 return -EINVAL;
385         }
386
387         if (copy_from_user(&multisync, ext, sizeof(multisync)))
388                 return -EFAULT;
389
390         if (multisync.pad)
391                 return -EINVAL;
392
393         ret = v3d_get_multisync_post_deps(file_priv, se, multisync.out_sync_count,
394                                           multisync.out_syncs);
395         if (ret)
396                 return ret;
397
398         se->in_sync_count = multisync.in_sync_count;
399         se->in_syncs = multisync.in_syncs;
400         se->flags |= DRM_V3D_EXT_ID_MULTI_SYNC;
401         se->wait_stage = multisync.wait_stage;
402
403         return 0;
404 }
405
406 /* Get data for the indirect CSD job submission. */
407 static int
408 v3d_get_cpu_indirect_csd_params(struct drm_file *file_priv,
409                                 struct drm_v3d_extension __user *ext,
410                                 struct v3d_cpu_job *job)
411 {
412         struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
413         struct v3d_dev *v3d = v3d_priv->v3d;
414         struct drm_v3d_indirect_csd indirect_csd;
415         struct v3d_indirect_csd_info *info = &job->indirect_csd;
416
417         if (!job) {
418                 DRM_DEBUG("CPU job extension was attached to a GPU job.\n");
419                 return -EINVAL;
420         }
421
422         if (job->job_type) {
423                 DRM_DEBUG("Two CPU job extensions were added to the same CPU job.\n");
424                 return -EINVAL;
425         }
426
427         if (copy_from_user(&indirect_csd, ext, sizeof(indirect_csd)))
428                 return -EFAULT;
429
430         if (!v3d_has_csd(v3d)) {
431                 DRM_DEBUG("Attempting CSD submit on non-CSD hardware.\n");
432                 return -EINVAL;
433         }
434
435         job->job_type = V3D_CPU_JOB_TYPE_INDIRECT_CSD;
436         info->offset = indirect_csd.offset;
437         info->wg_size = indirect_csd.wg_size;
438         memcpy(&info->wg_uniform_offsets, &indirect_csd.wg_uniform_offsets,
439                sizeof(indirect_csd.wg_uniform_offsets));
440
441         info->indirect = drm_gem_object_lookup(file_priv, indirect_csd.indirect);
442
443         return v3d_setup_csd_jobs_and_bos(file_priv, v3d, &indirect_csd.submit,
444                                           &info->job, &info->clean_job,
445                                           NULL, &info->acquire_ctx);
446 }
447
448 /* Get data for the query timestamp job submission. */
449 static int
450 v3d_get_cpu_timestamp_query_params(struct drm_file *file_priv,
451                                    struct drm_v3d_extension __user *ext,
452                                    struct v3d_cpu_job *job)
453 {
454         u32 __user *offsets, *syncs;
455         struct drm_v3d_timestamp_query timestamp;
456         struct v3d_timestamp_query_info *query_info = &job->timestamp_query;
457         unsigned int i;
458         int err;
459
460         if (!job) {
461                 DRM_DEBUG("CPU job extension was attached to a GPU job.\n");
462                 return -EINVAL;
463         }
464
465         if (job->job_type) {
466                 DRM_DEBUG("Two CPU job extensions were added to the same CPU job.\n");
467                 return -EINVAL;
468         }
469
470         if (copy_from_user(&timestamp, ext, sizeof(timestamp)))
471                 return -EFAULT;
472
473         if (timestamp.pad)
474                 return -EINVAL;
475
476         job->job_type = V3D_CPU_JOB_TYPE_TIMESTAMP_QUERY;
477
478         query_info->queries = kvmalloc_array(timestamp.count,
479                                              sizeof(struct v3d_timestamp_query),
480                                              GFP_KERNEL);
481         if (!query_info->queries)
482                 return -ENOMEM;
483
484         offsets = u64_to_user_ptr(timestamp.offsets);
485         syncs = u64_to_user_ptr(timestamp.syncs);
486
487         for (i = 0; i < timestamp.count; i++) {
488                 u32 offset, sync;
489
490                 if (get_user(offset, offsets++)) {
491                         err = -EFAULT;
492                         goto error;
493                 }
494
495                 query_info->queries[i].offset = offset;
496
497                 if (get_user(sync, syncs++)) {
498                         err = -EFAULT;
499                         goto error;
500                 }
501
502                 query_info->queries[i].syncobj = drm_syncobj_find(file_priv,
503                                                                   sync);
504                 if (!query_info->queries[i].syncobj) {
505                         err = -ENOENT;
506                         goto error;
507                 }
508         }
509         query_info->count = timestamp.count;
510
511         return 0;
512
513 error:
514         v3d_timestamp_query_info_free(&job->timestamp_query, i);
515         return err;
516 }
517
518 static int
519 v3d_get_cpu_reset_timestamp_params(struct drm_file *file_priv,
520                                    struct drm_v3d_extension __user *ext,
521                                    struct v3d_cpu_job *job)
522 {
523         u32 __user *syncs;
524         struct drm_v3d_reset_timestamp_query reset;
525         struct v3d_timestamp_query_info *query_info = &job->timestamp_query;
526         unsigned int i;
527         int err;
528
529         if (!job) {
530                 DRM_DEBUG("CPU job extension was attached to a GPU job.\n");
531                 return -EINVAL;
532         }
533
534         if (job->job_type) {
535                 DRM_DEBUG("Two CPU job extensions were added to the same CPU job.\n");
536                 return -EINVAL;
537         }
538
539         if (copy_from_user(&reset, ext, sizeof(reset)))
540                 return -EFAULT;
541
542         job->job_type = V3D_CPU_JOB_TYPE_RESET_TIMESTAMP_QUERY;
543
544         query_info->queries = kvmalloc_array(reset.count,
545                                              sizeof(struct v3d_timestamp_query),
546                                              GFP_KERNEL);
547         if (!query_info->queries)
548                 return -ENOMEM;
549
550         syncs = u64_to_user_ptr(reset.syncs);
551
552         for (i = 0; i < reset.count; i++) {
553                 u32 sync;
554
555                 query_info->queries[i].offset = reset.offset + 8 * i;
556
557                 if (get_user(sync, syncs++)) {
558                         err = -EFAULT;
559                         goto error;
560                 }
561
562                 query_info->queries[i].syncobj = drm_syncobj_find(file_priv,
563                                                                   sync);
564                 if (!query_info->queries[i].syncobj) {
565                         err = -ENOENT;
566                         goto error;
567                 }
568         }
569         query_info->count = reset.count;
570
571         return 0;
572
573 error:
574         v3d_timestamp_query_info_free(&job->timestamp_query, i);
575         return err;
576 }
577
578 /* Get data for the copy timestamp query results job submission. */
579 static int
580 v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv,
581                                       struct drm_v3d_extension __user *ext,
582                                       struct v3d_cpu_job *job)
583 {
584         u32 __user *offsets, *syncs;
585         struct drm_v3d_copy_timestamp_query copy;
586         struct v3d_timestamp_query_info *query_info = &job->timestamp_query;
587         unsigned int i;
588         int err;
589
590         if (!job) {
591                 DRM_DEBUG("CPU job extension was attached to a GPU job.\n");
592                 return -EINVAL;
593         }
594
595         if (job->job_type) {
596                 DRM_DEBUG("Two CPU job extensions were added to the same CPU job.\n");
597                 return -EINVAL;
598         }
599
600         if (copy_from_user(&copy, ext, sizeof(copy)))
601                 return -EFAULT;
602
603         if (copy.pad)
604                 return -EINVAL;
605
606         job->job_type = V3D_CPU_JOB_TYPE_COPY_TIMESTAMP_QUERY;
607
608         query_info->queries = kvmalloc_array(copy.count,
609                                              sizeof(struct v3d_timestamp_query),
610                                              GFP_KERNEL);
611         if (!query_info->queries)
612                 return -ENOMEM;
613
614         offsets = u64_to_user_ptr(copy.offsets);
615         syncs = u64_to_user_ptr(copy.syncs);
616
617         for (i = 0; i < copy.count; i++) {
618                 u32 offset, sync;
619
620                 if (get_user(offset, offsets++)) {
621                         err = -EFAULT;
622                         goto error;
623                 }
624
625                 query_info->queries[i].offset = offset;
626
627                 if (get_user(sync, syncs++)) {
628                         err = -EFAULT;
629                         goto error;
630                 }
631
632                 query_info->queries[i].syncobj = drm_syncobj_find(file_priv,
633                                                                   sync);
634                 if (!query_info->queries[i].syncobj) {
635                         err = -ENOENT;
636                         goto error;
637                 }
638         }
639         query_info->count = copy.count;
640
641         job->copy.do_64bit = copy.do_64bit;
642         job->copy.do_partial = copy.do_partial;
643         job->copy.availability_bit = copy.availability_bit;
644         job->copy.offset = copy.offset;
645         job->copy.stride = copy.stride;
646
647         return 0;
648
649 error:
650         v3d_timestamp_query_info_free(&job->timestamp_query, i);
651         return err;
652 }
653
654 static int
655 v3d_copy_query_info(struct v3d_performance_query_info *query_info,
656                     unsigned int count,
657                     unsigned int nperfmons,
658                     u32 __user *syncs,
659                     u64 __user *kperfmon_ids,
660                     struct drm_file *file_priv)
661 {
662         unsigned int i, j;
663         int err;
664
665         for (i = 0; i < count; i++) {
666                 struct v3d_performance_query *query = &query_info->queries[i];
667                 u32 __user *ids_pointer;
668                 u32 sync, id;
669                 u64 ids;
670
671                 if (get_user(sync, syncs++)) {
672                         err = -EFAULT;
673                         goto error;
674                 }
675
676                 if (get_user(ids, kperfmon_ids++)) {
677                         err = -EFAULT;
678                         goto error;
679                 }
680
681                 query->kperfmon_ids =
682                         kvmalloc_array(nperfmons,
683                                        sizeof(struct v3d_performance_query *),
684                                        GFP_KERNEL);
685                 if (!query->kperfmon_ids) {
686                         err = -ENOMEM;
687                         goto error;
688                 }
689
690                 ids_pointer = u64_to_user_ptr(ids);
691
692                 for (j = 0; j < nperfmons; j++) {
693                         if (get_user(id, ids_pointer++)) {
694                                 kvfree(query->kperfmon_ids);
695                                 err = -EFAULT;
696                                 goto error;
697                         }
698
699                         query->kperfmon_ids[j] = id;
700                 }
701
702                 query->syncobj = drm_syncobj_find(file_priv, sync);
703                 if (!query->syncobj) {
704                         kvfree(query->kperfmon_ids);
705                         err = -ENOENT;
706                         goto error;
707                 }
708         }
709
710         return 0;
711
712 error:
713         v3d_performance_query_info_free(query_info, i);
714         return err;
715 }
716
717 static int
718 v3d_get_cpu_reset_performance_params(struct drm_file *file_priv,
719                                      struct drm_v3d_extension __user *ext,
720                                      struct v3d_cpu_job *job)
721 {
722         struct v3d_performance_query_info *query_info = &job->performance_query;
723         struct drm_v3d_reset_performance_query reset;
724         int err;
725
726         if (!job) {
727                 DRM_DEBUG("CPU job extension was attached to a GPU job.\n");
728                 return -EINVAL;
729         }
730
731         if (job->job_type) {
732                 DRM_DEBUG("Two CPU job extensions were added to the same CPU job.\n");
733                 return -EINVAL;
734         }
735
736         if (copy_from_user(&reset, ext, sizeof(reset)))
737                 return -EFAULT;
738
739         job->job_type = V3D_CPU_JOB_TYPE_RESET_PERFORMANCE_QUERY;
740
741         query_info->queries =
742                 kvmalloc_array(reset.count,
743                                sizeof(struct v3d_performance_query),
744                                GFP_KERNEL);
745         if (!query_info->queries)
746                 return -ENOMEM;
747
748         err = v3d_copy_query_info(query_info,
749                                   reset.count,
750                                   reset.nperfmons,
751                                   u64_to_user_ptr(reset.syncs),
752                                   u64_to_user_ptr(reset.kperfmon_ids),
753                                   file_priv);
754         if (err)
755                 return err;
756
757         query_info->count = reset.count;
758         query_info->nperfmons = reset.nperfmons;
759
760         return 0;
761 }
762
763 static int
764 v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv,
765                                           struct drm_v3d_extension __user *ext,
766                                           struct v3d_cpu_job *job)
767 {
768         struct v3d_performance_query_info *query_info = &job->performance_query;
769         struct drm_v3d_copy_performance_query copy;
770         int err;
771
772         if (!job) {
773                 DRM_DEBUG("CPU job extension was attached to a GPU job.\n");
774                 return -EINVAL;
775         }
776
777         if (job->job_type) {
778                 DRM_DEBUG("Two CPU job extensions were added to the same CPU job.\n");
779                 return -EINVAL;
780         }
781
782         if (copy_from_user(&copy, ext, sizeof(copy)))
783                 return -EFAULT;
784
785         if (copy.pad)
786                 return -EINVAL;
787
788         job->job_type = V3D_CPU_JOB_TYPE_COPY_PERFORMANCE_QUERY;
789
790         query_info->queries =
791                 kvmalloc_array(copy.count,
792                                sizeof(struct v3d_performance_query),
793                                GFP_KERNEL);
794         if (!query_info->queries)
795                 return -ENOMEM;
796
797         err = v3d_copy_query_info(query_info,
798                                   copy.count,
799                                   copy.nperfmons,
800                                   u64_to_user_ptr(copy.syncs),
801                                   u64_to_user_ptr(copy.kperfmon_ids),
802                                   file_priv);
803         if (err)
804                 return err;
805
806         query_info->count = copy.count;
807         query_info->nperfmons = copy.nperfmons;
808         query_info->ncounters = copy.ncounters;
809
810         job->copy.do_64bit = copy.do_64bit;
811         job->copy.do_partial = copy.do_partial;
812         job->copy.availability_bit = copy.availability_bit;
813         job->copy.offset = copy.offset;
814         job->copy.stride = copy.stride;
815
816         return 0;
817 }
818
819 /* Whenever userspace sets ioctl extensions, v3d_get_extensions parses data
820  * according to the extension id (name).
821  */
822 static int
823 v3d_get_extensions(struct drm_file *file_priv,
824                    u64 ext_handles,
825                    struct v3d_submit_ext *se,
826                    struct v3d_cpu_job *job)
827 {
828         struct drm_v3d_extension __user *user_ext;
829         int ret;
830
831         user_ext = u64_to_user_ptr(ext_handles);
832         while (user_ext) {
833                 struct drm_v3d_extension ext;
834
835                 if (copy_from_user(&ext, user_ext, sizeof(ext))) {
836                         DRM_DEBUG("Failed to copy submit extension\n");
837                         return -EFAULT;
838                 }
839
840                 switch (ext.id) {
841                 case DRM_V3D_EXT_ID_MULTI_SYNC:
842                         ret = v3d_get_multisync_submit_deps(file_priv, user_ext, se);
843                         break;
844                 case DRM_V3D_EXT_ID_CPU_INDIRECT_CSD:
845                         ret = v3d_get_cpu_indirect_csd_params(file_priv, user_ext, job);
846                         break;
847                 case DRM_V3D_EXT_ID_CPU_TIMESTAMP_QUERY:
848                         ret = v3d_get_cpu_timestamp_query_params(file_priv, user_ext, job);
849                         break;
850                 case DRM_V3D_EXT_ID_CPU_RESET_TIMESTAMP_QUERY:
851                         ret = v3d_get_cpu_reset_timestamp_params(file_priv, user_ext, job);
852                         break;
853                 case DRM_V3D_EXT_ID_CPU_COPY_TIMESTAMP_QUERY:
854                         ret = v3d_get_cpu_copy_query_results_params(file_priv, user_ext, job);
855                         break;
856                 case DRM_V3D_EXT_ID_CPU_RESET_PERFORMANCE_QUERY:
857                         ret = v3d_get_cpu_reset_performance_params(file_priv, user_ext, job);
858                         break;
859                 case DRM_V3D_EXT_ID_CPU_COPY_PERFORMANCE_QUERY:
860                         ret = v3d_get_cpu_copy_performance_query_params(file_priv, user_ext, job);
861                         break;
862                 default:
863                         DRM_DEBUG_DRIVER("Unknown extension id: %d\n", ext.id);
864                         return -EINVAL;
865                 }
866
867                 if (ret)
868                         return ret;
869
870                 user_ext = u64_to_user_ptr(ext.next);
871         }
872
873         return 0;
874 }
875
876 /**
877  * v3d_submit_cl_ioctl() - Submits a job (frame) to the V3D.
878  * @dev: DRM device
879  * @data: ioctl argument
880  * @file_priv: DRM file for this fd
881  *
882  * This is the main entrypoint for userspace to submit a 3D frame to
883  * the GPU.  Userspace provides the binner command list (if
884  * applicable), and the kernel sets up the render command list to draw
885  * to the framebuffer described in the ioctl, using the command lists
886  * that the 3D engine's binner will produce.
887  */
888 int
889 v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
890                     struct drm_file *file_priv)
891 {
892         struct v3d_dev *v3d = to_v3d_dev(dev);
893         struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
894         struct drm_v3d_submit_cl *args = data;
895         struct v3d_submit_ext se = {0};
896         struct v3d_bin_job *bin = NULL;
897         struct v3d_render_job *render = NULL;
898         struct v3d_job *clean_job = NULL;
899         struct v3d_job *last_job;
900         struct ww_acquire_ctx acquire_ctx;
901         int ret = 0;
902
903         trace_v3d_submit_cl_ioctl(&v3d->drm, args->rcl_start, args->rcl_end);
904
905         if (args->pad)
906                 return -EINVAL;
907
908         if (args->flags &&
909             args->flags & ~(DRM_V3D_SUBMIT_CL_FLUSH_CACHE |
910                             DRM_V3D_SUBMIT_EXTENSION)) {
911                 DRM_INFO("invalid flags: %d\n", args->flags);
912                 return -EINVAL;
913         }
914
915         if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
916                 ret = v3d_get_extensions(file_priv, args->extensions, &se, NULL);
917                 if (ret) {
918                         DRM_DEBUG("Failed to get extensions.\n");
919                         return ret;
920                 }
921         }
922
923         ret = v3d_job_allocate((void *)&render, sizeof(*render));
924         if (ret)
925                 return ret;
926
927         ret = v3d_job_init(v3d, file_priv, &render->base,
928                            v3d_render_job_free, args->in_sync_rcl, &se, V3D_RENDER);
929         if (ret) {
930                 v3d_job_deallocate((void *)&render);
931                 goto fail;
932         }
933
934         render->start = args->rcl_start;
935         render->end = args->rcl_end;
936         INIT_LIST_HEAD(&render->unref_list);
937
938         if (args->bcl_start != args->bcl_end) {
939                 ret = v3d_job_allocate((void *)&bin, sizeof(*bin));
940                 if (ret)
941                         goto fail;
942
943                 ret = v3d_job_init(v3d, file_priv, &bin->base,
944                                    v3d_job_free, args->in_sync_bcl, &se, V3D_BIN);
945                 if (ret) {
946                         v3d_job_deallocate((void *)&bin);
947                         goto fail;
948                 }
949
950                 bin->start = args->bcl_start;
951                 bin->end = args->bcl_end;
952                 bin->qma = args->qma;
953                 bin->qms = args->qms;
954                 bin->qts = args->qts;
955                 bin->render = render;
956         }
957
958         if (args->flags & DRM_V3D_SUBMIT_CL_FLUSH_CACHE) {
959                 ret = v3d_job_allocate((void *)&clean_job, sizeof(*clean_job));
960                 if (ret)
961                         goto fail;
962
963                 ret = v3d_job_init(v3d, file_priv, clean_job,
964                                    v3d_job_free, 0, NULL, V3D_CACHE_CLEAN);
965                 if (ret) {
966                         v3d_job_deallocate((void *)&clean_job);
967                         goto fail;
968                 }
969
970                 last_job = clean_job;
971         } else {
972                 last_job = &render->base;
973         }
974
975         ret = v3d_lookup_bos(dev, file_priv, last_job,
976                              args->bo_handles, args->bo_handle_count);
977         if (ret)
978                 goto fail;
979
980         ret = v3d_lock_bo_reservations(last_job, &acquire_ctx);
981         if (ret)
982                 goto fail;
983
984         if (args->perfmon_id) {
985                 if (v3d->global_perfmon) {
986                         ret = -EAGAIN;
987                         goto fail_perfmon;
988                 }
989
990                 render->base.perfmon = v3d_perfmon_find(v3d_priv,
991                                                         args->perfmon_id);
992
993                 if (!render->base.perfmon) {
994                         ret = -ENOENT;
995                         goto fail_perfmon;
996                 }
997         }
998
999         mutex_lock(&v3d->sched_lock);
1000         if (bin) {
1001                 bin->base.perfmon = render->base.perfmon;
1002                 v3d_perfmon_get(bin->base.perfmon);
1003                 v3d_push_job(&bin->base);
1004
1005                 ret = drm_sched_job_add_dependency(&render->base.base,
1006                                                    dma_fence_get(bin->base.done_fence));
1007                 if (ret)
1008                         goto fail_unreserve;
1009         }
1010
1011         v3d_push_job(&render->base);
1012
1013         if (clean_job) {
1014                 struct dma_fence *render_fence =
1015                         dma_fence_get(render->base.done_fence);
1016                 ret = drm_sched_job_add_dependency(&clean_job->base,
1017                                                    render_fence);
1018                 if (ret)
1019                         goto fail_unreserve;
1020                 clean_job->perfmon = render->base.perfmon;
1021                 v3d_perfmon_get(clean_job->perfmon);
1022                 v3d_push_job(clean_job);
1023         }
1024
1025         mutex_unlock(&v3d->sched_lock);
1026
1027         v3d_attach_fences_and_unlock_reservation(file_priv,
1028                                                  last_job,
1029                                                  &acquire_ctx,
1030                                                  args->out_sync,
1031                                                  &se,
1032                                                  last_job->done_fence);
1033
1034         v3d_job_put(&bin->base);
1035         v3d_job_put(&render->base);
1036         v3d_job_put(clean_job);
1037
1038         return 0;
1039
1040 fail_unreserve:
1041         mutex_unlock(&v3d->sched_lock);
1042 fail_perfmon:
1043         drm_gem_unlock_reservations(last_job->bo,
1044                                     last_job->bo_count, &acquire_ctx);
1045 fail:
1046         v3d_job_cleanup((void *)bin);
1047         v3d_job_cleanup((void *)render);
1048         v3d_job_cleanup(clean_job);
1049         v3d_put_multisync_post_deps(&se);
1050
1051         return ret;
1052 }
1053
1054 /**
1055  * v3d_submit_tfu_ioctl() - Submits a TFU (texture formatting) job to the V3D.
1056  * @dev: DRM device
1057  * @data: ioctl argument
1058  * @file_priv: DRM file for this fd
1059  *
1060  * Userspace provides the register setup for the TFU, which we don't
1061  * need to validate since the TFU is behind the MMU.
1062  */
1063 int
1064 v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
1065                      struct drm_file *file_priv)
1066 {
1067         struct v3d_dev *v3d = to_v3d_dev(dev);
1068         struct drm_v3d_submit_tfu *args = data;
1069         struct v3d_submit_ext se = {0};
1070         struct v3d_tfu_job *job = NULL;
1071         struct ww_acquire_ctx acquire_ctx;
1072         int ret = 0;
1073
1074         trace_v3d_submit_tfu_ioctl(&v3d->drm, args->iia);
1075
1076         if (args->flags && !(args->flags & DRM_V3D_SUBMIT_EXTENSION)) {
1077                 DRM_DEBUG("invalid flags: %d\n", args->flags);
1078                 return -EINVAL;
1079         }
1080
1081         if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
1082                 ret = v3d_get_extensions(file_priv, args->extensions, &se, NULL);
1083                 if (ret) {
1084                         DRM_DEBUG("Failed to get extensions.\n");
1085                         return ret;
1086                 }
1087         }
1088
1089         ret = v3d_job_allocate((void *)&job, sizeof(*job));
1090         if (ret)
1091                 return ret;
1092
1093         ret = v3d_job_init(v3d, file_priv, &job->base,
1094                            v3d_job_free, args->in_sync, &se, V3D_TFU);
1095         if (ret) {
1096                 v3d_job_deallocate((void *)&job);
1097                 goto fail;
1098         }
1099
1100         job->base.bo = kcalloc(ARRAY_SIZE(args->bo_handles),
1101                                sizeof(*job->base.bo), GFP_KERNEL);
1102         if (!job->base.bo) {
1103                 ret = -ENOMEM;
1104                 goto fail;
1105         }
1106
1107         job->args = *args;
1108
1109         for (job->base.bo_count = 0;
1110              job->base.bo_count < ARRAY_SIZE(args->bo_handles);
1111              job->base.bo_count++) {
1112                 struct drm_gem_object *bo;
1113
1114                 if (!args->bo_handles[job->base.bo_count])
1115                         break;
1116
1117                 bo = drm_gem_object_lookup(file_priv, args->bo_handles[job->base.bo_count]);
1118                 if (!bo) {
1119                         DRM_DEBUG("Failed to look up GEM BO %d: %d\n",
1120                                   job->base.bo_count,
1121                                   args->bo_handles[job->base.bo_count]);
1122                         ret = -ENOENT;
1123                         goto fail;
1124                 }
1125                 job->base.bo[job->base.bo_count] = bo;
1126         }
1127
1128         ret = v3d_lock_bo_reservations(&job->base, &acquire_ctx);
1129         if (ret)
1130                 goto fail;
1131
1132         mutex_lock(&v3d->sched_lock);
1133         v3d_push_job(&job->base);
1134         mutex_unlock(&v3d->sched_lock);
1135
1136         v3d_attach_fences_and_unlock_reservation(file_priv,
1137                                                  &job->base, &acquire_ctx,
1138                                                  args->out_sync,
1139                                                  &se,
1140                                                  job->base.done_fence);
1141
1142         v3d_job_put(&job->base);
1143
1144         return 0;
1145
1146 fail:
1147         v3d_job_cleanup((void *)job);
1148         v3d_put_multisync_post_deps(&se);
1149
1150         return ret;
1151 }
1152
1153 /**
1154  * v3d_submit_csd_ioctl() - Submits a CSD (compute shader) job to the V3D.
1155  * @dev: DRM device
1156  * @data: ioctl argument
1157  * @file_priv: DRM file for this fd
1158  *
1159  * Userspace provides the register setup for the CSD, which we don't
1160  * need to validate since the CSD is behind the MMU.
1161  */
1162 int
1163 v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
1164                      struct drm_file *file_priv)
1165 {
1166         struct v3d_dev *v3d = to_v3d_dev(dev);
1167         struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
1168         struct drm_v3d_submit_csd *args = data;
1169         struct v3d_submit_ext se = {0};
1170         struct v3d_csd_job *job = NULL;
1171         struct v3d_job *clean_job = NULL;
1172         struct ww_acquire_ctx acquire_ctx;
1173         int ret;
1174
1175         trace_v3d_submit_csd_ioctl(&v3d->drm, args->cfg[5], args->cfg[6]);
1176
1177         if (args->pad)
1178                 return -EINVAL;
1179
1180         if (!v3d_has_csd(v3d)) {
1181                 DRM_DEBUG("Attempting CSD submit on non-CSD hardware\n");
1182                 return -EINVAL;
1183         }
1184
1185         if (args->flags && !(args->flags & DRM_V3D_SUBMIT_EXTENSION)) {
1186                 DRM_INFO("invalid flags: %d\n", args->flags);
1187                 return -EINVAL;
1188         }
1189
1190         if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
1191                 ret = v3d_get_extensions(file_priv, args->extensions, &se, NULL);
1192                 if (ret) {
1193                         DRM_DEBUG("Failed to get extensions.\n");
1194                         return ret;
1195                 }
1196         }
1197
1198         ret = v3d_setup_csd_jobs_and_bos(file_priv, v3d, args,
1199                                          &job, &clean_job, &se,
1200                                          &acquire_ctx);
1201         if (ret)
1202                 goto fail;
1203
1204         if (args->perfmon_id) {
1205                 if (v3d->global_perfmon) {
1206                         ret = -EAGAIN;
1207                         goto fail_perfmon;
1208                 }
1209
1210                 job->base.perfmon = v3d_perfmon_find(v3d_priv,
1211                                                      args->perfmon_id);
1212                 if (!job->base.perfmon) {
1213                         ret = -ENOENT;
1214                         goto fail_perfmon;
1215                 }
1216         }
1217
1218         mutex_lock(&v3d->sched_lock);
1219         v3d_push_job(&job->base);
1220
1221         ret = drm_sched_job_add_dependency(&clean_job->base,
1222                                            dma_fence_get(job->base.done_fence));
1223         if (ret)
1224                 goto fail_unreserve;
1225
1226         v3d_push_job(clean_job);
1227         mutex_unlock(&v3d->sched_lock);
1228
1229         v3d_attach_fences_and_unlock_reservation(file_priv,
1230                                                  clean_job,
1231                                                  &acquire_ctx,
1232                                                  args->out_sync,
1233                                                  &se,
1234                                                  clean_job->done_fence);
1235
1236         v3d_job_put(&job->base);
1237         v3d_job_put(clean_job);
1238
1239         return 0;
1240
1241 fail_unreserve:
1242         mutex_unlock(&v3d->sched_lock);
1243 fail_perfmon:
1244         drm_gem_unlock_reservations(clean_job->bo, clean_job->bo_count,
1245                                     &acquire_ctx);
1246 fail:
1247         v3d_job_cleanup((void *)job);
1248         v3d_job_cleanup(clean_job);
1249         v3d_put_multisync_post_deps(&se);
1250
1251         return ret;
1252 }
1253
1254 static const unsigned int cpu_job_bo_handle_count[] = {
1255         [V3D_CPU_JOB_TYPE_INDIRECT_CSD] = 1,
1256         [V3D_CPU_JOB_TYPE_TIMESTAMP_QUERY] = 1,
1257         [V3D_CPU_JOB_TYPE_RESET_TIMESTAMP_QUERY] = 1,
1258         [V3D_CPU_JOB_TYPE_COPY_TIMESTAMP_QUERY] = 2,
1259         [V3D_CPU_JOB_TYPE_RESET_PERFORMANCE_QUERY] = 0,
1260         [V3D_CPU_JOB_TYPE_COPY_PERFORMANCE_QUERY] = 1,
1261 };
1262
1263 /**
1264  * v3d_submit_cpu_ioctl() - Submits a CPU job to the V3D.
1265  * @dev: DRM device
1266  * @data: ioctl argument
1267  * @file_priv: DRM file for this fd
1268  *
1269  * Userspace specifies the CPU job type and data required to perform its
1270  * operations through the drm_v3d_extension struct.
1271  */
1272 int
1273 v3d_submit_cpu_ioctl(struct drm_device *dev, void *data,
1274                      struct drm_file *file_priv)
1275 {
1276         struct v3d_dev *v3d = to_v3d_dev(dev);
1277         struct drm_v3d_submit_cpu *args = data;
1278         struct v3d_submit_ext se = {0};
1279         struct v3d_submit_ext *out_se = NULL;
1280         struct v3d_cpu_job *cpu_job = NULL;
1281         struct v3d_csd_job *csd_job = NULL;
1282         struct v3d_job *clean_job = NULL;
1283         struct ww_acquire_ctx acquire_ctx;
1284         int ret;
1285
1286         if (args->flags && !(args->flags & DRM_V3D_SUBMIT_EXTENSION)) {
1287                 DRM_INFO("Invalid flags: %d\n", args->flags);
1288                 return -EINVAL;
1289         }
1290
1291         ret = v3d_job_allocate((void *)&cpu_job, sizeof(*cpu_job));
1292         if (ret)
1293                 return ret;
1294
1295         if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
1296                 ret = v3d_get_extensions(file_priv, args->extensions, &se, cpu_job);
1297                 if (ret) {
1298                         DRM_DEBUG("Failed to get extensions.\n");
1299                         goto fail;
1300                 }
1301         }
1302
1303         /* Every CPU job must have a CPU job user extension */
1304         if (!cpu_job->job_type) {
1305                 DRM_DEBUG("CPU job must have a CPU job user extension.\n");
1306                 ret = -EINVAL;
1307                 goto fail;
1308         }
1309
1310         if (args->bo_handle_count != cpu_job_bo_handle_count[cpu_job->job_type]) {
1311                 DRM_DEBUG("This CPU job was not submitted with the proper number of BOs.\n");
1312                 ret = -EINVAL;
1313                 goto fail;
1314         }
1315
1316         trace_v3d_submit_cpu_ioctl(&v3d->drm, cpu_job->job_type);
1317
1318         ret = v3d_job_init(v3d, file_priv, &cpu_job->base,
1319                            v3d_job_free, 0, &se, V3D_CPU);
1320         if (ret) {
1321                 v3d_job_deallocate((void *)&cpu_job);
1322                 goto fail;
1323         }
1324
1325         clean_job = cpu_job->indirect_csd.clean_job;
1326         csd_job = cpu_job->indirect_csd.job;
1327
1328         if (args->bo_handle_count) {
1329                 ret = v3d_lookup_bos(dev, file_priv, &cpu_job->base,
1330                                      args->bo_handles, args->bo_handle_count);
1331                 if (ret)
1332                         goto fail;
1333
1334                 ret = v3d_lock_bo_reservations(&cpu_job->base, &acquire_ctx);
1335                 if (ret)
1336                         goto fail;
1337         }
1338
1339         mutex_lock(&v3d->sched_lock);
1340         v3d_push_job(&cpu_job->base);
1341
1342         switch (cpu_job->job_type) {
1343         case V3D_CPU_JOB_TYPE_INDIRECT_CSD:
1344                 ret = drm_sched_job_add_dependency(&csd_job->base.base,
1345                                                    dma_fence_get(cpu_job->base.done_fence));
1346                 if (ret)
1347                         goto fail_unreserve;
1348
1349                 v3d_push_job(&csd_job->base);
1350
1351                 ret = drm_sched_job_add_dependency(&clean_job->base,
1352                                                    dma_fence_get(csd_job->base.done_fence));
1353                 if (ret)
1354                         goto fail_unreserve;
1355
1356                 v3d_push_job(clean_job);
1357
1358                 break;
1359         default:
1360                 break;
1361         }
1362         mutex_unlock(&v3d->sched_lock);
1363
1364         out_se = (cpu_job->job_type == V3D_CPU_JOB_TYPE_INDIRECT_CSD) ? NULL : &se;
1365
1366         v3d_attach_fences_and_unlock_reservation(file_priv,
1367                                                  &cpu_job->base,
1368                                                  &acquire_ctx, 0,
1369                                                  out_se, cpu_job->base.done_fence);
1370
1371         switch (cpu_job->job_type) {
1372         case V3D_CPU_JOB_TYPE_INDIRECT_CSD:
1373                 v3d_attach_fences_and_unlock_reservation(file_priv,
1374                                                          clean_job,
1375                                                          &cpu_job->indirect_csd.acquire_ctx,
1376                                                          0, &se, clean_job->done_fence);
1377                 break;
1378         default:
1379                 break;
1380         }
1381
1382         v3d_job_put(&cpu_job->base);
1383         v3d_job_put(&csd_job->base);
1384         v3d_job_put(clean_job);
1385
1386         return 0;
1387
1388 fail_unreserve:
1389         mutex_unlock(&v3d->sched_lock);
1390
1391         drm_gem_unlock_reservations(cpu_job->base.bo, cpu_job->base.bo_count,
1392                                     &acquire_ctx);
1393
1394         drm_gem_unlock_reservations(clean_job->bo, clean_job->bo_count,
1395                                     &cpu_job->indirect_csd.acquire_ctx);
1396
1397 fail:
1398         v3d_job_cleanup((void *)cpu_job);
1399         v3d_job_cleanup((void *)csd_job);
1400         v3d_job_cleanup(clean_job);
1401         v3d_put_multisync_post_deps(&se);
1402         kvfree(cpu_job->timestamp_query.queries);
1403         kvfree(cpu_job->performance_query.queries);
1404
1405         return ret;
1406 }
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