c6a214f1e991e19aa6bd557b6552380b0c950299
[muen/linux.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_cs.c
1 /*
2  * Copyright 2008 Jerome Glisse.
3  * All Rights Reserved.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a
6  * copy of this software and associated documentation files (the "Software"),
7  * to deal in the Software without restriction, including without limitation
8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9  * and/or sell copies of the Software, and to permit persons to whom the
10  * Software is furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice (including the next
13  * paragraph) shall be included in all copies or substantial portions of the
14  * Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22  * DEALINGS IN THE SOFTWARE.
23  *
24  * Authors:
25  *    Jerome Glisse <glisse@freedesktop.org>
26  */
27 #include <linux/pagemap.h>
28 #include <drm/drmP.h>
29 #include <drm/amdgpu_drm.h>
30 #include <drm/drm_syncobj.h>
31 #include "amdgpu.h"
32 #include "amdgpu_trace.h"
33
34 static int amdgpu_cs_user_fence_chunk(struct amdgpu_cs_parser *p,
35                                       struct drm_amdgpu_cs_chunk_fence *data,
36                                       uint32_t *offset)
37 {
38         struct drm_gem_object *gobj;
39         unsigned long size;
40
41         gobj = drm_gem_object_lookup(p->filp, data->handle);
42         if (gobj == NULL)
43                 return -EINVAL;
44
45         p->uf_entry.robj = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj));
46         p->uf_entry.priority = 0;
47         p->uf_entry.tv.bo = &p->uf_entry.robj->tbo;
48         p->uf_entry.tv.shared = true;
49         p->uf_entry.user_pages = NULL;
50
51         size = amdgpu_bo_size(p->uf_entry.robj);
52         if (size != PAGE_SIZE || (data->offset + 8) > size)
53                 return -EINVAL;
54
55         *offset = data->offset;
56
57         drm_gem_object_put_unlocked(gobj);
58
59         if (amdgpu_ttm_tt_get_usermm(p->uf_entry.robj->tbo.ttm)) {
60                 amdgpu_bo_unref(&p->uf_entry.robj);
61                 return -EINVAL;
62         }
63
64         return 0;
65 }
66
67 static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data)
68 {
69         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
70         struct amdgpu_vm *vm = &fpriv->vm;
71         union drm_amdgpu_cs *cs = data;
72         uint64_t *chunk_array_user;
73         uint64_t *chunk_array;
74         unsigned size, num_ibs = 0;
75         uint32_t uf_offset = 0;
76         int i;
77         int ret;
78
79         if (cs->in.num_chunks == 0)
80                 return 0;
81
82         chunk_array = kmalloc_array(cs->in.num_chunks, sizeof(uint64_t), GFP_KERNEL);
83         if (!chunk_array)
84                 return -ENOMEM;
85
86         p->ctx = amdgpu_ctx_get(fpriv, cs->in.ctx_id);
87         if (!p->ctx) {
88                 ret = -EINVAL;
89                 goto free_chunk;
90         }
91
92         /* get chunks */
93         chunk_array_user = u64_to_user_ptr(cs->in.chunks);
94         if (copy_from_user(chunk_array, chunk_array_user,
95                            sizeof(uint64_t)*cs->in.num_chunks)) {
96                 ret = -EFAULT;
97                 goto put_ctx;
98         }
99
100         p->nchunks = cs->in.num_chunks;
101         p->chunks = kmalloc_array(p->nchunks, sizeof(struct amdgpu_cs_chunk),
102                             GFP_KERNEL);
103         if (!p->chunks) {
104                 ret = -ENOMEM;
105                 goto put_ctx;
106         }
107
108         for (i = 0; i < p->nchunks; i++) {
109                 struct drm_amdgpu_cs_chunk __user **chunk_ptr = NULL;
110                 struct drm_amdgpu_cs_chunk user_chunk;
111                 uint32_t __user *cdata;
112
113                 chunk_ptr = u64_to_user_ptr(chunk_array[i]);
114                 if (copy_from_user(&user_chunk, chunk_ptr,
115                                        sizeof(struct drm_amdgpu_cs_chunk))) {
116                         ret = -EFAULT;
117                         i--;
118                         goto free_partial_kdata;
119                 }
120                 p->chunks[i].chunk_id = user_chunk.chunk_id;
121                 p->chunks[i].length_dw = user_chunk.length_dw;
122
123                 size = p->chunks[i].length_dw;
124                 cdata = u64_to_user_ptr(user_chunk.chunk_data);
125
126                 p->chunks[i].kdata = kvmalloc_array(size, sizeof(uint32_t), GFP_KERNEL);
127                 if (p->chunks[i].kdata == NULL) {
128                         ret = -ENOMEM;
129                         i--;
130                         goto free_partial_kdata;
131                 }
132                 size *= sizeof(uint32_t);
133                 if (copy_from_user(p->chunks[i].kdata, cdata, size)) {
134                         ret = -EFAULT;
135                         goto free_partial_kdata;
136                 }
137
138                 switch (p->chunks[i].chunk_id) {
139                 case AMDGPU_CHUNK_ID_IB:
140                         ++num_ibs;
141                         break;
142
143                 case AMDGPU_CHUNK_ID_FENCE:
144                         size = sizeof(struct drm_amdgpu_cs_chunk_fence);
145                         if (p->chunks[i].length_dw * sizeof(uint32_t) < size) {
146                                 ret = -EINVAL;
147                                 goto free_partial_kdata;
148                         }
149
150                         ret = amdgpu_cs_user_fence_chunk(p, p->chunks[i].kdata,
151                                                          &uf_offset);
152                         if (ret)
153                                 goto free_partial_kdata;
154
155                         break;
156
157                 case AMDGPU_CHUNK_ID_DEPENDENCIES:
158                 case AMDGPU_CHUNK_ID_SYNCOBJ_IN:
159                 case AMDGPU_CHUNK_ID_SYNCOBJ_OUT:
160                         break;
161
162                 default:
163                         ret = -EINVAL;
164                         goto free_partial_kdata;
165                 }
166         }
167
168         ret = amdgpu_job_alloc(p->adev, num_ibs, &p->job, vm);
169         if (ret)
170                 goto free_all_kdata;
171
172         if (p->uf_entry.robj)
173                 p->job->uf_addr = uf_offset;
174         kfree(chunk_array);
175         return 0;
176
177 free_all_kdata:
178         i = p->nchunks - 1;
179 free_partial_kdata:
180         for (; i >= 0; i--)
181                 kvfree(p->chunks[i].kdata);
182         kfree(p->chunks);
183         p->chunks = NULL;
184         p->nchunks = 0;
185 put_ctx:
186         amdgpu_ctx_put(p->ctx);
187 free_chunk:
188         kfree(chunk_array);
189
190         return ret;
191 }
192
193 /* Convert microseconds to bytes. */
194 static u64 us_to_bytes(struct amdgpu_device *adev, s64 us)
195 {
196         if (us <= 0 || !adev->mm_stats.log2_max_MBps)
197                 return 0;
198
199         /* Since accum_us is incremented by a million per second, just
200          * multiply it by the number of MB/s to get the number of bytes.
201          */
202         return us << adev->mm_stats.log2_max_MBps;
203 }
204
205 static s64 bytes_to_us(struct amdgpu_device *adev, u64 bytes)
206 {
207         if (!adev->mm_stats.log2_max_MBps)
208                 return 0;
209
210         return bytes >> adev->mm_stats.log2_max_MBps;
211 }
212
213 /* Returns how many bytes TTM can move right now. If no bytes can be moved,
214  * it returns 0. If it returns non-zero, it's OK to move at least one buffer,
215  * which means it can go over the threshold once. If that happens, the driver
216  * will be in debt and no other buffer migrations can be done until that debt
217  * is repaid.
218  *
219  * This approach allows moving a buffer of any size (it's important to allow
220  * that).
221  *
222  * The currency is simply time in microseconds and it increases as the clock
223  * ticks. The accumulated microseconds (us) are converted to bytes and
224  * returned.
225  */
226 static void amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev,
227                                               u64 *max_bytes,
228                                               u64 *max_vis_bytes)
229 {
230         s64 time_us, increment_us;
231         u64 free_vram, total_vram, used_vram;
232
233         /* Allow a maximum of 200 accumulated ms. This is basically per-IB
234          * throttling.
235          *
236          * It means that in order to get full max MBps, at least 5 IBs per
237          * second must be submitted and not more than 200ms apart from each
238          * other.
239          */
240         const s64 us_upper_bound = 200000;
241
242         if (!adev->mm_stats.log2_max_MBps) {
243                 *max_bytes = 0;
244                 *max_vis_bytes = 0;
245                 return;
246         }
247
248         total_vram = adev->mc.real_vram_size - adev->vram_pin_size;
249         used_vram = amdgpu_vram_mgr_usage(&adev->mman.bdev.man[TTM_PL_VRAM]);
250         free_vram = used_vram >= total_vram ? 0 : total_vram - used_vram;
251
252         spin_lock(&adev->mm_stats.lock);
253
254         /* Increase the amount of accumulated us. */
255         time_us = ktime_to_us(ktime_get());
256         increment_us = time_us - adev->mm_stats.last_update_us;
257         adev->mm_stats.last_update_us = time_us;
258         adev->mm_stats.accum_us = min(adev->mm_stats.accum_us + increment_us,
259                                       us_upper_bound);
260
261         /* This prevents the short period of low performance when the VRAM
262          * usage is low and the driver is in debt or doesn't have enough
263          * accumulated us to fill VRAM quickly.
264          *
265          * The situation can occur in these cases:
266          * - a lot of VRAM is freed by userspace
267          * - the presence of a big buffer causes a lot of evictions
268          *   (solution: split buffers into smaller ones)
269          *
270          * If 128 MB or 1/8th of VRAM is free, start filling it now by setting
271          * accum_us to a positive number.
272          */
273         if (free_vram >= 128 * 1024 * 1024 || free_vram >= total_vram / 8) {
274                 s64 min_us;
275
276                 /* Be more aggresive on dGPUs. Try to fill a portion of free
277                  * VRAM now.
278                  */
279                 if (!(adev->flags & AMD_IS_APU))
280                         min_us = bytes_to_us(adev, free_vram / 4);
281                 else
282                         min_us = 0; /* Reset accum_us on APUs. */
283
284                 adev->mm_stats.accum_us = max(min_us, adev->mm_stats.accum_us);
285         }
286
287         /* This is set to 0 if the driver is in debt to disallow (optional)
288          * buffer moves.
289          */
290         *max_bytes = us_to_bytes(adev, adev->mm_stats.accum_us);
291
292         /* Do the same for visible VRAM if half of it is free */
293         if (adev->mc.visible_vram_size < adev->mc.real_vram_size) {
294                 u64 total_vis_vram = adev->mc.visible_vram_size;
295                 u64 used_vis_vram =
296                         amdgpu_vram_mgr_vis_usage(&adev->mman.bdev.man[TTM_PL_VRAM]);
297
298                 if (used_vis_vram < total_vis_vram) {
299                         u64 free_vis_vram = total_vis_vram - used_vis_vram;
300                         adev->mm_stats.accum_us_vis = min(adev->mm_stats.accum_us_vis +
301                                                           increment_us, us_upper_bound);
302
303                         if (free_vis_vram >= total_vis_vram / 2)
304                                 adev->mm_stats.accum_us_vis =
305                                         max(bytes_to_us(adev, free_vis_vram / 2),
306                                             adev->mm_stats.accum_us_vis);
307                 }
308
309                 *max_vis_bytes = us_to_bytes(adev, adev->mm_stats.accum_us_vis);
310         } else {
311                 *max_vis_bytes = 0;
312         }
313
314         spin_unlock(&adev->mm_stats.lock);
315 }
316
317 /* Report how many bytes have really been moved for the last command
318  * submission. This can result in a debt that can stop buffer migrations
319  * temporarily.
320  */
321 void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes,
322                                   u64 num_vis_bytes)
323 {
324         spin_lock(&adev->mm_stats.lock);
325         adev->mm_stats.accum_us -= bytes_to_us(adev, num_bytes);
326         adev->mm_stats.accum_us_vis -= bytes_to_us(adev, num_vis_bytes);
327         spin_unlock(&adev->mm_stats.lock);
328 }
329
330 static int amdgpu_cs_bo_validate(struct amdgpu_cs_parser *p,
331                                  struct amdgpu_bo *bo)
332 {
333         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
334         u64 initial_bytes_moved, bytes_moved;
335         uint32_t domain;
336         int r;
337
338         if (bo->pin_count)
339                 return 0;
340
341         /* Don't move this buffer if we have depleted our allowance
342          * to move it. Don't move anything if the threshold is zero.
343          */
344         if (p->bytes_moved < p->bytes_moved_threshold) {
345                 if (adev->mc.visible_vram_size < adev->mc.real_vram_size &&
346                     (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)) {
347                         /* And don't move a CPU_ACCESS_REQUIRED BO to limited
348                          * visible VRAM if we've depleted our allowance to do
349                          * that.
350                          */
351                         if (p->bytes_moved_vis < p->bytes_moved_vis_threshold)
352                                 domain = bo->preferred_domains;
353                         else
354                                 domain = bo->allowed_domains;
355                 } else {
356                         domain = bo->preferred_domains;
357                 }
358         } else {
359                 domain = bo->allowed_domains;
360         }
361
362 retry:
363         amdgpu_ttm_placement_from_domain(bo, domain);
364         initial_bytes_moved = atomic64_read(&adev->num_bytes_moved);
365         r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
366         bytes_moved = atomic64_read(&adev->num_bytes_moved) -
367                       initial_bytes_moved;
368         p->bytes_moved += bytes_moved;
369         if (adev->mc.visible_vram_size < adev->mc.real_vram_size &&
370             bo->tbo.mem.mem_type == TTM_PL_VRAM &&
371             bo->tbo.mem.start < adev->mc.visible_vram_size >> PAGE_SHIFT)
372                 p->bytes_moved_vis += bytes_moved;
373
374         if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
375                 domain = bo->allowed_domains;
376                 goto retry;
377         }
378
379         return r;
380 }
381
382 /* Last resort, try to evict something from the current working set */
383 static bool amdgpu_cs_try_evict(struct amdgpu_cs_parser *p,
384                                 struct amdgpu_bo *validated)
385 {
386         uint32_t domain = validated->allowed_domains;
387         int r;
388
389         if (!p->evictable)
390                 return false;
391
392         for (;&p->evictable->tv.head != &p->validated;
393              p->evictable = list_prev_entry(p->evictable, tv.head)) {
394
395                 struct amdgpu_bo_list_entry *candidate = p->evictable;
396                 struct amdgpu_bo *bo = candidate->robj;
397                 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
398                 u64 initial_bytes_moved, bytes_moved;
399                 bool update_bytes_moved_vis;
400                 uint32_t other;
401
402                 /* If we reached our current BO we can forget it */
403                 if (candidate->robj == validated)
404                         break;
405
406                 other = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
407
408                 /* Check if this BO is in one of the domains we need space for */
409                 if (!(other & domain))
410                         continue;
411
412                 /* Check if we can move this BO somewhere else */
413                 other = bo->allowed_domains & ~domain;
414                 if (!other)
415                         continue;
416
417                 /* Good we can try to move this BO somewhere else */
418                 amdgpu_ttm_placement_from_domain(bo, other);
419                 update_bytes_moved_vis =
420                         adev->mc.visible_vram_size < adev->mc.real_vram_size &&
421                         bo->tbo.mem.mem_type == TTM_PL_VRAM &&
422                         bo->tbo.mem.start < adev->mc.visible_vram_size >> PAGE_SHIFT;
423                 initial_bytes_moved = atomic64_read(&adev->num_bytes_moved);
424                 r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
425                 bytes_moved = atomic64_read(&adev->num_bytes_moved) -
426                         initial_bytes_moved;
427                 p->bytes_moved += bytes_moved;
428                 if (update_bytes_moved_vis)
429                         p->bytes_moved_vis += bytes_moved;
430
431                 if (unlikely(r))
432                         break;
433
434                 p->evictable = list_prev_entry(p->evictable, tv.head);
435                 list_move(&candidate->tv.head, &p->validated);
436
437                 return true;
438         }
439
440         return false;
441 }
442
443 static int amdgpu_cs_validate(void *param, struct amdgpu_bo *bo)
444 {
445         struct amdgpu_cs_parser *p = param;
446         int r;
447
448         do {
449                 r = amdgpu_cs_bo_validate(p, bo);
450         } while (r == -ENOMEM && amdgpu_cs_try_evict(p, bo));
451         if (r)
452                 return r;
453
454         if (bo->shadow)
455                 r = amdgpu_cs_bo_validate(p, bo->shadow);
456
457         return r;
458 }
459
460 static int amdgpu_cs_list_validate(struct amdgpu_cs_parser *p,
461                             struct list_head *validated)
462 {
463         struct amdgpu_bo_list_entry *lobj;
464         int r;
465
466         list_for_each_entry(lobj, validated, tv.head) {
467                 struct amdgpu_bo *bo = lobj->robj;
468                 bool binding_userptr = false;
469                 struct mm_struct *usermm;
470
471                 usermm = amdgpu_ttm_tt_get_usermm(bo->tbo.ttm);
472                 if (usermm && usermm != current->mm)
473                         return -EPERM;
474
475                 /* Check if we have user pages and nobody bound the BO already */
476                 if (amdgpu_ttm_tt_userptr_needs_pages(bo->tbo.ttm) &&
477                     lobj->user_pages) {
478                         amdgpu_ttm_placement_from_domain(bo,
479                                                          AMDGPU_GEM_DOMAIN_CPU);
480                         r = ttm_bo_validate(&bo->tbo, &bo->placement, true,
481                                             false);
482                         if (r)
483                                 return r;
484                         amdgpu_ttm_tt_set_user_pages(bo->tbo.ttm,
485                                                      lobj->user_pages);
486                         binding_userptr = true;
487                 }
488
489                 if (p->evictable == lobj)
490                         p->evictable = NULL;
491
492                 r = amdgpu_cs_validate(p, bo);
493                 if (r)
494                         return r;
495
496                 if (binding_userptr) {
497                         kvfree(lobj->user_pages);
498                         lobj->user_pages = NULL;
499                 }
500         }
501         return 0;
502 }
503
504 static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p,
505                                 union drm_amdgpu_cs *cs)
506 {
507         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
508         struct amdgpu_bo_list_entry *e;
509         struct list_head duplicates;
510         unsigned i, tries = 10;
511         int r;
512
513         INIT_LIST_HEAD(&p->validated);
514
515         p->bo_list = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle);
516         if (p->bo_list) {
517                 amdgpu_bo_list_get_list(p->bo_list, &p->validated);
518                 if (p->bo_list->first_userptr != p->bo_list->num_entries)
519                         p->mn = amdgpu_mn_get(p->adev);
520         }
521
522         INIT_LIST_HEAD(&duplicates);
523         amdgpu_vm_get_pd_bo(&fpriv->vm, &p->validated, &p->vm_pd);
524
525         if (p->uf_entry.robj)
526                 list_add(&p->uf_entry.tv.head, &p->validated);
527
528         while (1) {
529                 struct list_head need_pages;
530                 unsigned i;
531
532                 r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true,
533                                            &duplicates);
534                 if (unlikely(r != 0)) {
535                         if (r != -ERESTARTSYS)
536                                 DRM_ERROR("ttm_eu_reserve_buffers failed.\n");
537                         goto error_free_pages;
538                 }
539
540                 /* Without a BO list we don't have userptr BOs */
541                 if (!p->bo_list)
542                         break;
543
544                 INIT_LIST_HEAD(&need_pages);
545                 for (i = p->bo_list->first_userptr;
546                      i < p->bo_list->num_entries; ++i) {
547                         struct amdgpu_bo *bo;
548
549                         e = &p->bo_list->array[i];
550                         bo = e->robj;
551
552                         if (amdgpu_ttm_tt_userptr_invalidated(bo->tbo.ttm,
553                                  &e->user_invalidated) && e->user_pages) {
554
555                                 /* We acquired a page array, but somebody
556                                  * invalidated it. Free it and try again
557                                  */
558                                 release_pages(e->user_pages,
559                                               bo->tbo.ttm->num_pages,
560                                               false);
561                                 kvfree(e->user_pages);
562                                 e->user_pages = NULL;
563                         }
564
565                         if (amdgpu_ttm_tt_userptr_needs_pages(bo->tbo.ttm) &&
566                             !e->user_pages) {
567                                 list_del(&e->tv.head);
568                                 list_add(&e->tv.head, &need_pages);
569
570                                 amdgpu_bo_unreserve(e->robj);
571                         }
572                 }
573
574                 if (list_empty(&need_pages))
575                         break;
576
577                 /* Unreserve everything again. */
578                 ttm_eu_backoff_reservation(&p->ticket, &p->validated);
579
580                 /* We tried too many times, just abort */
581                 if (!--tries) {
582                         r = -EDEADLK;
583                         DRM_ERROR("deadlock in %s\n", __func__);
584                         goto error_free_pages;
585                 }
586
587                 /* Fill the page arrays for all userptrs. */
588                 list_for_each_entry(e, &need_pages, tv.head) {
589                         struct ttm_tt *ttm = e->robj->tbo.ttm;
590
591                         e->user_pages = kvmalloc_array(ttm->num_pages,
592                                                          sizeof(struct page*),
593                                                          GFP_KERNEL | __GFP_ZERO);
594                         if (!e->user_pages) {
595                                 r = -ENOMEM;
596                                 DRM_ERROR("calloc failure in %s\n", __func__);
597                                 goto error_free_pages;
598                         }
599
600                         r = amdgpu_ttm_tt_get_user_pages(ttm, e->user_pages);
601                         if (r) {
602                                 DRM_ERROR("amdgpu_ttm_tt_get_user_pages failed.\n");
603                                 kvfree(e->user_pages);
604                                 e->user_pages = NULL;
605                                 goto error_free_pages;
606                         }
607                 }
608
609                 /* And try again. */
610                 list_splice(&need_pages, &p->validated);
611         }
612
613         amdgpu_cs_get_threshold_for_moves(p->adev, &p->bytes_moved_threshold,
614                                           &p->bytes_moved_vis_threshold);
615         p->bytes_moved = 0;
616         p->bytes_moved_vis = 0;
617         p->evictable = list_last_entry(&p->validated,
618                                        struct amdgpu_bo_list_entry,
619                                        tv.head);
620
621         r = amdgpu_vm_validate_pt_bos(p->adev, &fpriv->vm,
622                                       amdgpu_cs_validate, p);
623         if (r) {
624                 DRM_ERROR("amdgpu_vm_validate_pt_bos() failed.\n");
625                 goto error_validate;
626         }
627
628         r = amdgpu_cs_list_validate(p, &duplicates);
629         if (r) {
630                 DRM_ERROR("amdgpu_cs_list_validate(duplicates) failed.\n");
631                 goto error_validate;
632         }
633
634         r = amdgpu_cs_list_validate(p, &p->validated);
635         if (r) {
636                 DRM_ERROR("amdgpu_cs_list_validate(validated) failed.\n");
637                 goto error_validate;
638         }
639
640         amdgpu_cs_report_moved_bytes(p->adev, p->bytes_moved,
641                                      p->bytes_moved_vis);
642         if (p->bo_list) {
643                 struct amdgpu_bo *gds = p->bo_list->gds_obj;
644                 struct amdgpu_bo *gws = p->bo_list->gws_obj;
645                 struct amdgpu_bo *oa = p->bo_list->oa_obj;
646                 struct amdgpu_vm *vm = &fpriv->vm;
647                 unsigned i;
648
649                 for (i = 0; i < p->bo_list->num_entries; i++) {
650                         struct amdgpu_bo *bo = p->bo_list->array[i].robj;
651
652                         p->bo_list->array[i].bo_va = amdgpu_vm_bo_find(vm, bo);
653                 }
654
655                 if (gds) {
656                         p->job->gds_base = amdgpu_bo_gpu_offset(gds);
657                         p->job->gds_size = amdgpu_bo_size(gds);
658                 }
659                 if (gws) {
660                         p->job->gws_base = amdgpu_bo_gpu_offset(gws);
661                         p->job->gws_size = amdgpu_bo_size(gws);
662                 }
663                 if (oa) {
664                         p->job->oa_base = amdgpu_bo_gpu_offset(oa);
665                         p->job->oa_size = amdgpu_bo_size(oa);
666                 }
667         }
668
669         if (!r && p->uf_entry.robj) {
670                 struct amdgpu_bo *uf = p->uf_entry.robj;
671
672                 r = amdgpu_ttm_bind(&uf->tbo, &uf->tbo.mem);
673                 p->job->uf_addr += amdgpu_bo_gpu_offset(uf);
674         }
675
676 error_validate:
677         if (r)
678                 ttm_eu_backoff_reservation(&p->ticket, &p->validated);
679
680 error_free_pages:
681
682         if (p->bo_list) {
683                 for (i = p->bo_list->first_userptr;
684                      i < p->bo_list->num_entries; ++i) {
685                         e = &p->bo_list->array[i];
686
687                         if (!e->user_pages)
688                                 continue;
689
690                         release_pages(e->user_pages,
691                                       e->robj->tbo.ttm->num_pages,
692                                       false);
693                         kvfree(e->user_pages);
694                 }
695         }
696
697         return r;
698 }
699
700 static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p)
701 {
702         struct amdgpu_bo_list_entry *e;
703         int r;
704
705         list_for_each_entry(e, &p->validated, tv.head) {
706                 struct reservation_object *resv = e->robj->tbo.resv;
707                 r = amdgpu_sync_resv(p->adev, &p->job->sync, resv, p->filp);
708
709                 if (r)
710                         return r;
711         }
712         return 0;
713 }
714
715 /**
716  * cs_parser_fini() - clean parser states
717  * @parser:     parser structure holding parsing context.
718  * @error:      error number
719  *
720  * If error is set than unvalidate buffer, otherwise just free memory
721  * used by parsing context.
722  **/
723 static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error,
724                                   bool backoff)
725 {
726         unsigned i;
727
728         if (error && backoff)
729                 ttm_eu_backoff_reservation(&parser->ticket,
730                                            &parser->validated);
731
732         for (i = 0; i < parser->num_post_dep_syncobjs; i++)
733                 drm_syncobj_put(parser->post_dep_syncobjs[i]);
734         kfree(parser->post_dep_syncobjs);
735
736         dma_fence_put(parser->fence);
737
738         if (parser->ctx)
739                 amdgpu_ctx_put(parser->ctx);
740         if (parser->bo_list)
741                 amdgpu_bo_list_put(parser->bo_list);
742
743         for (i = 0; i < parser->nchunks; i++)
744                 kvfree(parser->chunks[i].kdata);
745         kfree(parser->chunks);
746         if (parser->job)
747                 amdgpu_job_free(parser->job);
748         amdgpu_bo_unref(&parser->uf_entry.robj);
749 }
750
751 static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p)
752 {
753         struct amdgpu_device *adev = p->adev;
754         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
755         struct amdgpu_vm *vm = &fpriv->vm;
756         struct amdgpu_bo_va *bo_va;
757         struct amdgpu_bo *bo;
758         int i, r;
759
760         r = amdgpu_vm_update_directories(adev, vm);
761         if (r)
762                 return r;
763
764         r = amdgpu_vm_clear_freed(adev, vm, NULL);
765         if (r)
766                 return r;
767
768         r = amdgpu_vm_bo_update(adev, fpriv->prt_va, false);
769         if (r)
770                 return r;
771
772         r = amdgpu_sync_fence(adev, &p->job->sync,
773                               fpriv->prt_va->last_pt_update);
774         if (r)
775                 return r;
776
777         if (amdgpu_sriov_vf(adev)) {
778                 struct dma_fence *f;
779
780                 bo_va = fpriv->csa_va;
781                 BUG_ON(!bo_va);
782                 r = amdgpu_vm_bo_update(adev, bo_va, false);
783                 if (r)
784                         return r;
785
786                 f = bo_va->last_pt_update;
787                 r = amdgpu_sync_fence(adev, &p->job->sync, f);
788                 if (r)
789                         return r;
790         }
791
792         if (p->bo_list) {
793                 for (i = 0; i < p->bo_list->num_entries; i++) {
794                         struct dma_fence *f;
795
796                         /* ignore duplicates */
797                         bo = p->bo_list->array[i].robj;
798                         if (!bo)
799                                 continue;
800
801                         bo_va = p->bo_list->array[i].bo_va;
802                         if (bo_va == NULL)
803                                 continue;
804
805                         r = amdgpu_vm_bo_update(adev, bo_va, false);
806                         if (r)
807                                 return r;
808
809                         f = bo_va->last_pt_update;
810                         r = amdgpu_sync_fence(adev, &p->job->sync, f);
811                         if (r)
812                                 return r;
813                 }
814
815         }
816
817         r = amdgpu_vm_handle_moved(adev, vm);
818         if (r)
819                 return r;
820
821         r = amdgpu_sync_fence(adev, &p->job->sync, vm->last_update);
822         if (r)
823                 return r;
824
825         if (amdgpu_vm_debug && p->bo_list) {
826                 /* Invalidate all BOs to test for userspace bugs */
827                 for (i = 0; i < p->bo_list->num_entries; i++) {
828                         /* ignore duplicates */
829                         bo = p->bo_list->array[i].robj;
830                         if (!bo)
831                                 continue;
832
833                         amdgpu_vm_bo_invalidate(adev, bo, false);
834                 }
835         }
836
837         return r;
838 }
839
840 static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev,
841                                  struct amdgpu_cs_parser *p)
842 {
843         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
844         struct amdgpu_vm *vm = &fpriv->vm;
845         struct amdgpu_ring *ring = p->job->ring;
846         int i, r;
847
848         /* Only for UVD/VCE VM emulation */
849         if (ring->funcs->parse_cs) {
850                 for (i = 0; i < p->job->num_ibs; i++) {
851                         r = amdgpu_ring_parse_cs(ring, p, i);
852                         if (r)
853                                 return r;
854                 }
855         }
856
857         if (p->job->vm) {
858                 p->job->vm_pd_addr = amdgpu_bo_gpu_offset(vm->root.base.bo);
859
860                 r = amdgpu_bo_vm_update_pte(p);
861                 if (r)
862                         return r;
863         }
864
865         return amdgpu_cs_sync_rings(p);
866 }
867
868 static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
869                              struct amdgpu_cs_parser *parser)
870 {
871         struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
872         struct amdgpu_vm *vm = &fpriv->vm;
873         int i, j;
874         int r, ce_preempt = 0, de_preempt = 0;
875
876         for (i = 0, j = 0; i < parser->nchunks && j < parser->job->num_ibs; i++) {
877                 struct amdgpu_cs_chunk *chunk;
878                 struct amdgpu_ib *ib;
879                 struct drm_amdgpu_cs_chunk_ib *chunk_ib;
880                 struct amdgpu_ring *ring;
881
882                 chunk = &parser->chunks[i];
883                 ib = &parser->job->ibs[j];
884                 chunk_ib = (struct drm_amdgpu_cs_chunk_ib *)chunk->kdata;
885
886                 if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
887                         continue;
888
889                 if (chunk_ib->ip_type == AMDGPU_HW_IP_GFX && amdgpu_sriov_vf(adev)) {
890                         if (chunk_ib->flags & AMDGPU_IB_FLAG_PREEMPT) {
891                                 if (chunk_ib->flags & AMDGPU_IB_FLAG_CE)
892                                         ce_preempt++;
893                                 else
894                                         de_preempt++;
895                         }
896
897                         /* each GFX command submit allows 0 or 1 IB preemptible for CE & DE */
898                         if (ce_preempt > 1 || de_preempt > 1)
899                                 return -EINVAL;
900                 }
901
902                 r = amdgpu_queue_mgr_map(adev, &parser->ctx->queue_mgr, chunk_ib->ip_type,
903                                          chunk_ib->ip_instance, chunk_ib->ring, &ring);
904                 if (r)
905                         return r;
906
907                 if (chunk_ib->flags & AMDGPU_IB_FLAG_PREAMBLE) {
908                         parser->job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT;
909                         if (!parser->ctx->preamble_presented) {
910                                 parser->job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT_FIRST;
911                                 parser->ctx->preamble_presented = true;
912                         }
913                 }
914
915                 if (parser->job->ring && parser->job->ring != ring)
916                         return -EINVAL;
917
918                 parser->job->ring = ring;
919
920                 if (ring->funcs->parse_cs) {
921                         struct amdgpu_bo_va_mapping *m;
922                         struct amdgpu_bo *aobj = NULL;
923                         uint64_t offset;
924                         uint8_t *kptr;
925
926                         r = amdgpu_cs_find_mapping(parser, chunk_ib->va_start,
927                                                    &aobj, &m);
928                         if (r) {
929                                 DRM_ERROR("IB va_start is invalid\n");
930                                 return r;
931                         }
932
933                         if ((chunk_ib->va_start + chunk_ib->ib_bytes) >
934                             (m->last + 1) * AMDGPU_GPU_PAGE_SIZE) {
935                                 DRM_ERROR("IB va_start+ib_bytes is invalid\n");
936                                 return -EINVAL;
937                         }
938
939                         /* the IB should be reserved at this point */
940                         r = amdgpu_bo_kmap(aobj, (void **)&kptr);
941                         if (r) {
942                                 return r;
943                         }
944
945                         offset = m->start * AMDGPU_GPU_PAGE_SIZE;
946                         kptr += chunk_ib->va_start - offset;
947
948                         r =  amdgpu_ib_get(adev, vm, chunk_ib->ib_bytes, ib);
949                         if (r) {
950                                 DRM_ERROR("Failed to get ib !\n");
951                                 return r;
952                         }
953
954                         memcpy(ib->ptr, kptr, chunk_ib->ib_bytes);
955                         amdgpu_bo_kunmap(aobj);
956                 } else {
957                         r =  amdgpu_ib_get(adev, vm, 0, ib);
958                         if (r) {
959                                 DRM_ERROR("Failed to get ib !\n");
960                                 return r;
961                         }
962
963                 }
964
965                 ib->gpu_addr = chunk_ib->va_start;
966                 ib->length_dw = chunk_ib->ib_bytes / 4;
967                 ib->flags = chunk_ib->flags;
968                 j++;
969         }
970
971         /* UVD & VCE fw doesn't support user fences */
972         if (parser->job->uf_addr && (
973             parser->job->ring->funcs->type == AMDGPU_RING_TYPE_UVD ||
974             parser->job->ring->funcs->type == AMDGPU_RING_TYPE_VCE))
975                 return -EINVAL;
976
977         return 0;
978 }
979
980 static int amdgpu_cs_process_fence_dep(struct amdgpu_cs_parser *p,
981                                        struct amdgpu_cs_chunk *chunk)
982 {
983         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
984         unsigned num_deps;
985         int i, r;
986         struct drm_amdgpu_cs_chunk_dep *deps;
987
988         deps = (struct drm_amdgpu_cs_chunk_dep *)chunk->kdata;
989         num_deps = chunk->length_dw * 4 /
990                 sizeof(struct drm_amdgpu_cs_chunk_dep);
991
992         for (i = 0; i < num_deps; ++i) {
993                 struct amdgpu_ring *ring;
994                 struct amdgpu_ctx *ctx;
995                 struct dma_fence *fence;
996
997                 ctx = amdgpu_ctx_get(fpriv, deps[i].ctx_id);
998                 if (ctx == NULL)
999                         return -EINVAL;
1000
1001                 r = amdgpu_queue_mgr_map(p->adev, &ctx->queue_mgr,
1002                                          deps[i].ip_type,
1003                                          deps[i].ip_instance,
1004                                          deps[i].ring, &ring);
1005                 if (r) {
1006                         amdgpu_ctx_put(ctx);
1007                         return r;
1008                 }
1009
1010                 fence = amdgpu_ctx_get_fence(ctx, ring,
1011                                              deps[i].handle);
1012                 if (IS_ERR(fence)) {
1013                         r = PTR_ERR(fence);
1014                         amdgpu_ctx_put(ctx);
1015                         return r;
1016                 } else if (fence) {
1017                         r = amdgpu_sync_fence(p->adev, &p->job->sync,
1018                                               fence);
1019                         dma_fence_put(fence);
1020                         amdgpu_ctx_put(ctx);
1021                         if (r)
1022                                 return r;
1023                 }
1024         }
1025         return 0;
1026 }
1027
1028 static int amdgpu_syncobj_lookup_and_add_to_sync(struct amdgpu_cs_parser *p,
1029                                                  uint32_t handle)
1030 {
1031         int r;
1032         struct dma_fence *fence;
1033         r = drm_syncobj_find_fence(p->filp, handle, &fence);
1034         if (r)
1035                 return r;
1036
1037         r = amdgpu_sync_fence(p->adev, &p->job->sync, fence);
1038         dma_fence_put(fence);
1039
1040         return r;
1041 }
1042
1043 static int amdgpu_cs_process_syncobj_in_dep(struct amdgpu_cs_parser *p,
1044                                             struct amdgpu_cs_chunk *chunk)
1045 {
1046         unsigned num_deps;
1047         int i, r;
1048         struct drm_amdgpu_cs_chunk_sem *deps;
1049
1050         deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata;
1051         num_deps = chunk->length_dw * 4 /
1052                 sizeof(struct drm_amdgpu_cs_chunk_sem);
1053
1054         for (i = 0; i < num_deps; ++i) {
1055                 r = amdgpu_syncobj_lookup_and_add_to_sync(p, deps[i].handle);
1056                 if (r)
1057                         return r;
1058         }
1059         return 0;
1060 }
1061
1062 static int amdgpu_cs_process_syncobj_out_dep(struct amdgpu_cs_parser *p,
1063                                              struct amdgpu_cs_chunk *chunk)
1064 {
1065         unsigned num_deps;
1066         int i;
1067         struct drm_amdgpu_cs_chunk_sem *deps;
1068         deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata;
1069         num_deps = chunk->length_dw * 4 /
1070                 sizeof(struct drm_amdgpu_cs_chunk_sem);
1071
1072         p->post_dep_syncobjs = kmalloc_array(num_deps,
1073                                              sizeof(struct drm_syncobj *),
1074                                              GFP_KERNEL);
1075         p->num_post_dep_syncobjs = 0;
1076
1077         if (!p->post_dep_syncobjs)
1078                 return -ENOMEM;
1079
1080         for (i = 0; i < num_deps; ++i) {
1081                 p->post_dep_syncobjs[i] = drm_syncobj_find(p->filp, deps[i].handle);
1082                 if (!p->post_dep_syncobjs[i])
1083                         return -EINVAL;
1084                 p->num_post_dep_syncobjs++;
1085         }
1086         return 0;
1087 }
1088
1089 static int amdgpu_cs_dependencies(struct amdgpu_device *adev,
1090                                   struct amdgpu_cs_parser *p)
1091 {
1092         int i, r;
1093
1094         for (i = 0; i < p->nchunks; ++i) {
1095                 struct amdgpu_cs_chunk *chunk;
1096
1097                 chunk = &p->chunks[i];
1098
1099                 if (chunk->chunk_id == AMDGPU_CHUNK_ID_DEPENDENCIES) {
1100                         r = amdgpu_cs_process_fence_dep(p, chunk);
1101                         if (r)
1102                                 return r;
1103                 } else if (chunk->chunk_id == AMDGPU_CHUNK_ID_SYNCOBJ_IN) {
1104                         r = amdgpu_cs_process_syncobj_in_dep(p, chunk);
1105                         if (r)
1106                                 return r;
1107                 } else if (chunk->chunk_id == AMDGPU_CHUNK_ID_SYNCOBJ_OUT) {
1108                         r = amdgpu_cs_process_syncobj_out_dep(p, chunk);
1109                         if (r)
1110                                 return r;
1111                 }
1112         }
1113
1114         return 0;
1115 }
1116
1117 static void amdgpu_cs_post_dependencies(struct amdgpu_cs_parser *p)
1118 {
1119         int i;
1120
1121         for (i = 0; i < p->num_post_dep_syncobjs; ++i)
1122                 drm_syncobj_replace_fence(p->post_dep_syncobjs[i], p->fence);
1123 }
1124
1125 static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
1126                             union drm_amdgpu_cs *cs)
1127 {
1128         struct amdgpu_ring *ring = p->job->ring;
1129         struct amd_sched_entity *entity = &p->ctx->rings[ring->idx].entity;
1130         struct amdgpu_job *job;
1131         unsigned i;
1132         uint64_t seq;
1133
1134         int r;
1135
1136         amdgpu_mn_lock(p->mn);
1137         if (p->bo_list) {
1138                 for (i = p->bo_list->first_userptr;
1139                      i < p->bo_list->num_entries; ++i) {
1140                         struct amdgpu_bo *bo = p->bo_list->array[i].robj;
1141
1142                         if (amdgpu_ttm_tt_userptr_needs_pages(bo->tbo.ttm)) {
1143                                 amdgpu_mn_unlock(p->mn);
1144                                 return -ERESTARTSYS;
1145                         }
1146                 }
1147         }
1148
1149         job = p->job;
1150         p->job = NULL;
1151
1152         r = amd_sched_job_init(&job->base, &ring->sched, entity, p->filp);
1153         if (r) {
1154                 amdgpu_job_free(job);
1155                 amdgpu_mn_unlock(p->mn);
1156                 return r;
1157         }
1158
1159         job->owner = p->filp;
1160         job->fence_ctx = entity->fence_context;
1161         p->fence = dma_fence_get(&job->base.s_fence->finished);
1162
1163         r = amdgpu_ctx_add_fence(p->ctx, ring, p->fence, &seq);
1164         if (r) {
1165                 dma_fence_put(p->fence);
1166                 dma_fence_put(&job->base.s_fence->finished);
1167                 amdgpu_job_free(job);
1168                 amdgpu_mn_unlock(p->mn);
1169                 return r;
1170         }
1171
1172         amdgpu_cs_post_dependencies(p);
1173
1174         cs->out.handle = seq;
1175         job->uf_sequence = seq;
1176
1177         amdgpu_job_free_resources(job);
1178
1179         trace_amdgpu_cs_ioctl(job);
1180         amd_sched_entity_push_job(&job->base);
1181
1182         ttm_eu_fence_buffer_objects(&p->ticket, &p->validated, p->fence);
1183         amdgpu_mn_unlock(p->mn);
1184
1185         return 0;
1186 }
1187
1188 int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
1189 {
1190         struct amdgpu_device *adev = dev->dev_private;
1191         struct amdgpu_fpriv *fpriv = filp->driver_priv;
1192         union drm_amdgpu_cs *cs = data;
1193         struct amdgpu_cs_parser parser = {};
1194         bool reserved_buffers = false;
1195         int i, r;
1196
1197         if (!adev->accel_working)
1198                 return -EBUSY;
1199         if (amdgpu_kms_vram_lost(adev, fpriv))
1200                 return -ENODEV;
1201
1202         parser.adev = adev;
1203         parser.filp = filp;
1204
1205         r = amdgpu_cs_parser_init(&parser, data);
1206         if (r) {
1207                 DRM_ERROR("Failed to initialize parser !\n");
1208                 goto out;
1209         }
1210
1211         r = amdgpu_cs_parser_bos(&parser, data);
1212         if (r) {
1213                 if (r == -ENOMEM)
1214                         DRM_ERROR("Not enough memory for command submission!\n");
1215                 else if (r != -ERESTARTSYS)
1216                         DRM_ERROR("Failed to process the buffer list %d!\n", r);
1217                 goto out;
1218         }
1219
1220         reserved_buffers = true;
1221         r = amdgpu_cs_ib_fill(adev, &parser);
1222         if (r)
1223                 goto out;
1224
1225         r = amdgpu_cs_dependencies(adev, &parser);
1226         if (r) {
1227                 DRM_ERROR("Failed in the dependencies handling %d!\n", r);
1228                 goto out;
1229         }
1230
1231         for (i = 0; i < parser.job->num_ibs; i++)
1232                 trace_amdgpu_cs(&parser, i);
1233
1234         r = amdgpu_cs_ib_vm_chunk(adev, &parser);
1235         if (r)
1236                 goto out;
1237
1238         r = amdgpu_cs_submit(&parser, cs);
1239
1240 out:
1241         amdgpu_cs_parser_fini(&parser, r, reserved_buffers);
1242         return r;
1243 }
1244
1245 /**
1246  * amdgpu_cs_wait_ioctl - wait for a command submission to finish
1247  *
1248  * @dev: drm device
1249  * @data: data from userspace
1250  * @filp: file private
1251  *
1252  * Wait for the command submission identified by handle to finish.
1253  */
1254 int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data,
1255                          struct drm_file *filp)
1256 {
1257         union drm_amdgpu_wait_cs *wait = data;
1258         struct amdgpu_device *adev = dev->dev_private;
1259         struct amdgpu_fpriv *fpriv = filp->driver_priv;
1260         unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout);
1261         struct amdgpu_ring *ring = NULL;
1262         struct amdgpu_ctx *ctx;
1263         struct dma_fence *fence;
1264         long r;
1265
1266         if (amdgpu_kms_vram_lost(adev, fpriv))
1267                 return -ENODEV;
1268
1269         ctx = amdgpu_ctx_get(filp->driver_priv, wait->in.ctx_id);
1270         if (ctx == NULL)
1271                 return -EINVAL;
1272
1273         r = amdgpu_queue_mgr_map(adev, &ctx->queue_mgr,
1274                                  wait->in.ip_type, wait->in.ip_instance,
1275                                  wait->in.ring, &ring);
1276         if (r) {
1277                 amdgpu_ctx_put(ctx);
1278                 return r;
1279         }
1280
1281         fence = amdgpu_ctx_get_fence(ctx, ring, wait->in.handle);
1282         if (IS_ERR(fence))
1283                 r = PTR_ERR(fence);
1284         else if (fence) {
1285                 r = dma_fence_wait_timeout(fence, true, timeout);
1286                 dma_fence_put(fence);
1287         } else
1288                 r = 1;
1289
1290         amdgpu_ctx_put(ctx);
1291         if (r < 0)
1292                 return r;
1293
1294         memset(wait, 0, sizeof(*wait));
1295         wait->out.status = (r == 0);
1296
1297         return 0;
1298 }
1299
1300 /**
1301  * amdgpu_cs_get_fence - helper to get fence from drm_amdgpu_fence
1302  *
1303  * @adev: amdgpu device
1304  * @filp: file private
1305  * @user: drm_amdgpu_fence copied from user space
1306  */
1307 static struct dma_fence *amdgpu_cs_get_fence(struct amdgpu_device *adev,
1308                                              struct drm_file *filp,
1309                                              struct drm_amdgpu_fence *user)
1310 {
1311         struct amdgpu_ring *ring;
1312         struct amdgpu_ctx *ctx;
1313         struct dma_fence *fence;
1314         int r;
1315
1316         ctx = amdgpu_ctx_get(filp->driver_priv, user->ctx_id);
1317         if (ctx == NULL)
1318                 return ERR_PTR(-EINVAL);
1319
1320         r = amdgpu_queue_mgr_map(adev, &ctx->queue_mgr, user->ip_type,
1321                                  user->ip_instance, user->ring, &ring);
1322         if (r) {
1323                 amdgpu_ctx_put(ctx);
1324                 return ERR_PTR(r);
1325         }
1326
1327         fence = amdgpu_ctx_get_fence(ctx, ring, user->seq_no);
1328         amdgpu_ctx_put(ctx);
1329
1330         return fence;
1331 }
1332
1333 /**
1334  * amdgpu_cs_wait_all_fence - wait on all fences to signal
1335  *
1336  * @adev: amdgpu device
1337  * @filp: file private
1338  * @wait: wait parameters
1339  * @fences: array of drm_amdgpu_fence
1340  */
1341 static int amdgpu_cs_wait_all_fences(struct amdgpu_device *adev,
1342                                      struct drm_file *filp,
1343                                      union drm_amdgpu_wait_fences *wait,
1344                                      struct drm_amdgpu_fence *fences)
1345 {
1346         uint32_t fence_count = wait->in.fence_count;
1347         unsigned int i;
1348         long r = 1;
1349
1350         for (i = 0; i < fence_count; i++) {
1351                 struct dma_fence *fence;
1352                 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1353
1354                 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1355                 if (IS_ERR(fence))
1356                         return PTR_ERR(fence);
1357                 else if (!fence)
1358                         continue;
1359
1360                 r = dma_fence_wait_timeout(fence, true, timeout);
1361                 dma_fence_put(fence);
1362                 if (r < 0)
1363                         return r;
1364
1365                 if (r == 0)
1366                         break;
1367         }
1368
1369         memset(wait, 0, sizeof(*wait));
1370         wait->out.status = (r > 0);
1371
1372         return 0;
1373 }
1374
1375 /**
1376  * amdgpu_cs_wait_any_fence - wait on any fence to signal
1377  *
1378  * @adev: amdgpu device
1379  * @filp: file private
1380  * @wait: wait parameters
1381  * @fences: array of drm_amdgpu_fence
1382  */
1383 static int amdgpu_cs_wait_any_fence(struct amdgpu_device *adev,
1384                                     struct drm_file *filp,
1385                                     union drm_amdgpu_wait_fences *wait,
1386                                     struct drm_amdgpu_fence *fences)
1387 {
1388         unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1389         uint32_t fence_count = wait->in.fence_count;
1390         uint32_t first = ~0;
1391         struct dma_fence **array;
1392         unsigned int i;
1393         long r;
1394
1395         /* Prepare the fence array */
1396         array = kcalloc(fence_count, sizeof(struct dma_fence *), GFP_KERNEL);
1397
1398         if (array == NULL)
1399                 return -ENOMEM;
1400
1401         for (i = 0; i < fence_count; i++) {
1402                 struct dma_fence *fence;
1403
1404                 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1405                 if (IS_ERR(fence)) {
1406                         r = PTR_ERR(fence);
1407                         goto err_free_fence_array;
1408                 } else if (fence) {
1409                         array[i] = fence;
1410                 } else { /* NULL, the fence has been already signaled */
1411                         r = 1;
1412                         first = i;
1413                         goto out;
1414                 }
1415         }
1416
1417         r = dma_fence_wait_any_timeout(array, fence_count, true, timeout,
1418                                        &first);
1419         if (r < 0)
1420                 goto err_free_fence_array;
1421
1422 out:
1423         memset(wait, 0, sizeof(*wait));
1424         wait->out.status = (r > 0);
1425         wait->out.first_signaled = first;
1426         /* set return value 0 to indicate success */
1427         r = 0;
1428
1429 err_free_fence_array:
1430         for (i = 0; i < fence_count; i++)
1431                 dma_fence_put(array[i]);
1432         kfree(array);
1433
1434         return r;
1435 }
1436
1437 /**
1438  * amdgpu_cs_wait_fences_ioctl - wait for multiple command submissions to finish
1439  *
1440  * @dev: drm device
1441  * @data: data from userspace
1442  * @filp: file private
1443  */
1444 int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data,
1445                                 struct drm_file *filp)
1446 {
1447         struct amdgpu_device *adev = dev->dev_private;
1448         struct amdgpu_fpriv *fpriv = filp->driver_priv;
1449         union drm_amdgpu_wait_fences *wait = data;
1450         uint32_t fence_count = wait->in.fence_count;
1451         struct drm_amdgpu_fence *fences_user;
1452         struct drm_amdgpu_fence *fences;
1453         int r;
1454
1455         if (amdgpu_kms_vram_lost(adev, fpriv))
1456                 return -ENODEV;
1457         /* Get the fences from userspace */
1458         fences = kmalloc_array(fence_count, sizeof(struct drm_amdgpu_fence),
1459                         GFP_KERNEL);
1460         if (fences == NULL)
1461                 return -ENOMEM;
1462
1463         fences_user = u64_to_user_ptr(wait->in.fences);
1464         if (copy_from_user(fences, fences_user,
1465                 sizeof(struct drm_amdgpu_fence) * fence_count)) {
1466                 r = -EFAULT;
1467                 goto err_free_fences;
1468         }
1469
1470         if (wait->in.wait_all)
1471                 r = amdgpu_cs_wait_all_fences(adev, filp, wait, fences);
1472         else
1473                 r = amdgpu_cs_wait_any_fence(adev, filp, wait, fences);
1474
1475 err_free_fences:
1476         kfree(fences);
1477
1478         return r;
1479 }
1480
1481 /**
1482  * amdgpu_cs_find_bo_va - find bo_va for VM address
1483  *
1484  * @parser: command submission parser context
1485  * @addr: VM address
1486  * @bo: resulting BO of the mapping found
1487  *
1488  * Search the buffer objects in the command submission context for a certain
1489  * virtual memory address. Returns allocation structure when found, NULL
1490  * otherwise.
1491  */
1492 int amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
1493                            uint64_t addr, struct amdgpu_bo **bo,
1494                            struct amdgpu_bo_va_mapping **map)
1495 {
1496         struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
1497         struct amdgpu_vm *vm = &fpriv->vm;
1498         struct amdgpu_bo_va_mapping *mapping;
1499         int r;
1500
1501         addr /= AMDGPU_GPU_PAGE_SIZE;
1502
1503         mapping = amdgpu_vm_bo_lookup_mapping(vm, addr);
1504         if (!mapping || !mapping->bo_va || !mapping->bo_va->base.bo)
1505                 return -EINVAL;
1506
1507         *bo = mapping->bo_va->base.bo;
1508         *map = mapping;
1509
1510         /* Double check that the BO is reserved by this CS */
1511         if (READ_ONCE((*bo)->tbo.resv->lock.ctx) != &parser->ticket)
1512                 return -EINVAL;
1513
1514         r = amdgpu_ttm_bind(&(*bo)->tbo, &(*bo)->tbo.mem);
1515         if (unlikely(r))
1516                 return r;
1517
1518         if ((*bo)->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
1519                 return 0;
1520
1521         (*bo)->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
1522         amdgpu_ttm_placement_from_domain(*bo, (*bo)->allowed_domains);
1523         return ttm_bo_validate(&(*bo)->tbo, &(*bo)->placement, false, false);
1524 }