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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
28#include <linux/file.h>
29#include <linux/pagemap.h>
30#include <linux/sync_file.h>
31#include <linux/dma-buf.h>
32
33#include <drm/amdgpu_drm.h>
34#include <drm/drm_syncobj.h>
35#include "amdgpu.h"
36#include "amdgpu_trace.h"
37#include "amdgpu_gmc.h"
38#include "amdgpu_gem.h"
39#include "amdgpu_ras.h"
40
41static int amdgpu_cs_user_fence_chunk(struct amdgpu_cs_parser *p,
42 struct drm_amdgpu_cs_chunk_fence *data,
43 uint32_t *offset)
44{
45 struct drm_gem_object *gobj;
46 struct amdgpu_bo *bo;
47 unsigned long size;
48 int r;
49
50 gobj = drm_gem_object_lookup(p->filp, data->handle);
51 if (gobj == NULL)
52 return -EINVAL;
53
54 bo = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj));
55 p->uf_entry.priority = 0;
56 p->uf_entry.tv.bo = &bo->tbo;
57 /* One for TTM and one for the CS job */
58 p->uf_entry.tv.num_shared = 2;
59
60 drm_gem_object_put(gobj);
61
62 size = amdgpu_bo_size(bo);
63 if (size != PAGE_SIZE || (data->offset + 8) > size) {
64 r = -EINVAL;
65 goto error_unref;
66 }
67
68 if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm)) {
69 r = -EINVAL;
70 goto error_unref;
71 }
72
73 *offset = data->offset;
74
75 return 0;
76
77error_unref:
78 amdgpu_bo_unref(&bo);
79 return r;
80}
81
82static int amdgpu_cs_bo_handles_chunk(struct amdgpu_cs_parser *p,
83 struct drm_amdgpu_bo_list_in *data)
84{
85 int r;
86 struct drm_amdgpu_bo_list_entry *info = NULL;
87
88 r = amdgpu_bo_create_list_entry_array(data, &info);
89 if (r)
90 return r;
91
92 r = amdgpu_bo_list_create(p->adev, p->filp, info, data->bo_number,
93 &p->bo_list);
94 if (r)
95 goto error_free;
96
97 kvfree(info);
98 return 0;
99
100error_free:
101 kvfree(info);
102
103 return r;
104}
105
106static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, union drm_amdgpu_cs *cs)
107{
108 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
109 struct amdgpu_vm *vm = &fpriv->vm;
110 uint64_t *chunk_array_user;
111 uint64_t *chunk_array;
112 unsigned size, num_ibs = 0;
113 uint32_t uf_offset = 0;
114 int i;
115 int ret;
116
117 if (cs->in.num_chunks == 0)
118 return 0;
119
120 chunk_array = kvmalloc_array(cs->in.num_chunks, sizeof(uint64_t), GFP_KERNEL);
121 if (!chunk_array)
122 return -ENOMEM;
123
124 p->ctx = amdgpu_ctx_get(fpriv, cs->in.ctx_id);
125 if (!p->ctx) {
126 ret = -EINVAL;
127 goto free_chunk;
128 }
129
130 mutex_lock(&p->ctx->lock);
131
132 /* skip guilty context job */
133 if (atomic_read(&p->ctx->guilty) == 1) {
134 ret = -ECANCELED;
135 goto free_chunk;
136 }
137
138 /* get chunks */
139 chunk_array_user = u64_to_user_ptr(cs->in.chunks);
140 if (copy_from_user(chunk_array, chunk_array_user,
141 sizeof(uint64_t)*cs->in.num_chunks)) {
142 ret = -EFAULT;
143 goto free_chunk;
144 }
145
146 p->nchunks = cs->in.num_chunks;
147 p->chunks = kvmalloc_array(p->nchunks, sizeof(struct amdgpu_cs_chunk),
148 GFP_KERNEL);
149 if (!p->chunks) {
150 ret = -ENOMEM;
151 goto free_chunk;
152 }
153
154 for (i = 0; i < p->nchunks; i++) {
155 struct drm_amdgpu_cs_chunk __user **chunk_ptr = NULL;
156 struct drm_amdgpu_cs_chunk user_chunk;
157 uint32_t __user *cdata;
158
159 chunk_ptr = u64_to_user_ptr(chunk_array[i]);
160 if (copy_from_user(&user_chunk, chunk_ptr,
161 sizeof(struct drm_amdgpu_cs_chunk))) {
162 ret = -EFAULT;
163 i--;
164 goto free_partial_kdata;
165 }
166 p->chunks[i].chunk_id = user_chunk.chunk_id;
167 p->chunks[i].length_dw = user_chunk.length_dw;
168
169 size = p->chunks[i].length_dw;
170 cdata = u64_to_user_ptr(user_chunk.chunk_data);
171
172 p->chunks[i].kdata = kvmalloc_array(size, sizeof(uint32_t), GFP_KERNEL);
173 if (p->chunks[i].kdata == NULL) {
174 ret = -ENOMEM;
175 i--;
176 goto free_partial_kdata;
177 }
178 size *= sizeof(uint32_t);
179 if (copy_from_user(p->chunks[i].kdata, cdata, size)) {
180 ret = -EFAULT;
181 goto free_partial_kdata;
182 }
183
184 switch (p->chunks[i].chunk_id) {
185 case AMDGPU_CHUNK_ID_IB:
186 ++num_ibs;
187 break;
188
189 case AMDGPU_CHUNK_ID_FENCE:
190 size = sizeof(struct drm_amdgpu_cs_chunk_fence);
191 if (p->chunks[i].length_dw * sizeof(uint32_t) < size) {
192 ret = -EINVAL;
193 goto free_partial_kdata;
194 }
195
196 ret = amdgpu_cs_user_fence_chunk(p, p->chunks[i].kdata,
197 &uf_offset);
198 if (ret)
199 goto free_partial_kdata;
200
201 break;
202
203 case AMDGPU_CHUNK_ID_BO_HANDLES:
204 size = sizeof(struct drm_amdgpu_bo_list_in);
205 if (p->chunks[i].length_dw * sizeof(uint32_t) < size) {
206 ret = -EINVAL;
207 goto free_partial_kdata;
208 }
209
210 ret = amdgpu_cs_bo_handles_chunk(p, p->chunks[i].kdata);
211 if (ret)
212 goto free_partial_kdata;
213
214 break;
215
216 case AMDGPU_CHUNK_ID_DEPENDENCIES:
217 case AMDGPU_CHUNK_ID_SYNCOBJ_IN:
218 case AMDGPU_CHUNK_ID_SYNCOBJ_OUT:
219 case AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES:
220 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_WAIT:
221 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_SIGNAL:
222 break;
223
224 default:
225 ret = -EINVAL;
226 goto free_partial_kdata;
227 }
228 }
229
230 ret = amdgpu_job_alloc(p->adev, num_ibs, &p->job, vm);
231 if (ret)
232 goto free_all_kdata;
233
234 if (p->ctx->vram_lost_counter != p->job->vram_lost_counter) {
235 ret = -ECANCELED;
236 goto free_all_kdata;
237 }
238
239 if (p->uf_entry.tv.bo)
240 p->job->uf_addr = uf_offset;
241 kvfree(chunk_array);
242
243 /* Use this opportunity to fill in task info for the vm */
244 amdgpu_vm_set_task_info(vm);
245
246 return 0;
247
248free_all_kdata:
249 i = p->nchunks - 1;
250free_partial_kdata:
251 for (; i >= 0; i--)
252 kvfree(p->chunks[i].kdata);
253 kvfree(p->chunks);
254 p->chunks = NULL;
255 p->nchunks = 0;
256free_chunk:
257 kvfree(chunk_array);
258
259 return ret;
260}
261
262/* Convert microseconds to bytes. */
263static u64 us_to_bytes(struct amdgpu_device *adev, s64 us)
264{
265 if (us <= 0 || !adev->mm_stats.log2_max_MBps)
266 return 0;
267
268 /* Since accum_us is incremented by a million per second, just
269 * multiply it by the number of MB/s to get the number of bytes.
270 */
271 return us << adev->mm_stats.log2_max_MBps;
272}
273
274static s64 bytes_to_us(struct amdgpu_device *adev, u64 bytes)
275{
276 if (!adev->mm_stats.log2_max_MBps)
277 return 0;
278
279 return bytes >> adev->mm_stats.log2_max_MBps;
280}
281
282/* Returns how many bytes TTM can move right now. If no bytes can be moved,
283 * it returns 0. If it returns non-zero, it's OK to move at least one buffer,
284 * which means it can go over the threshold once. If that happens, the driver
285 * will be in debt and no other buffer migrations can be done until that debt
286 * is repaid.
287 *
288 * This approach allows moving a buffer of any size (it's important to allow
289 * that).
290 *
291 * The currency is simply time in microseconds and it increases as the clock
292 * ticks. The accumulated microseconds (us) are converted to bytes and
293 * returned.
294 */
295static void amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev,
296 u64 *max_bytes,
297 u64 *max_vis_bytes)
298{
299 s64 time_us, increment_us;
300 u64 free_vram, total_vram, used_vram;
301 struct ttm_resource_manager *vram_man = ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM);
302 /* Allow a maximum of 200 accumulated ms. This is basically per-IB
303 * throttling.
304 *
305 * It means that in order to get full max MBps, at least 5 IBs per
306 * second must be submitted and not more than 200ms apart from each
307 * other.
308 */
309 const s64 us_upper_bound = 200000;
310
311 if (!adev->mm_stats.log2_max_MBps) {
312 *max_bytes = 0;
313 *max_vis_bytes = 0;
314 return;
315 }
316
317 total_vram = adev->gmc.real_vram_size - atomic64_read(&adev->vram_pin_size);
318 used_vram = amdgpu_vram_mgr_usage(vram_man);
319 free_vram = used_vram >= total_vram ? 0 : total_vram - used_vram;
320
321 spin_lock(&adev->mm_stats.lock);
322
323 /* Increase the amount of accumulated us. */
324 time_us = ktime_to_us(ktime_get());
325 increment_us = time_us - adev->mm_stats.last_update_us;
326 adev->mm_stats.last_update_us = time_us;
327 adev->mm_stats.accum_us = min(adev->mm_stats.accum_us + increment_us,
328 us_upper_bound);
329
330 /* This prevents the short period of low performance when the VRAM
331 * usage is low and the driver is in debt or doesn't have enough
332 * accumulated us to fill VRAM quickly.
333 *
334 * The situation can occur in these cases:
335 * - a lot of VRAM is freed by userspace
336 * - the presence of a big buffer causes a lot of evictions
337 * (solution: split buffers into smaller ones)
338 *
339 * If 128 MB or 1/8th of VRAM is free, start filling it now by setting
340 * accum_us to a positive number.
341 */
342 if (free_vram >= 128 * 1024 * 1024 || free_vram >= total_vram / 8) {
343 s64 min_us;
344
345 /* Be more aggresive on dGPUs. Try to fill a portion of free
346 * VRAM now.
347 */
348 if (!(adev->flags & AMD_IS_APU))
349 min_us = bytes_to_us(adev, free_vram / 4);
350 else
351 min_us = 0; /* Reset accum_us on APUs. */
352
353 adev->mm_stats.accum_us = max(min_us, adev->mm_stats.accum_us);
354 }
355
356 /* This is set to 0 if the driver is in debt to disallow (optional)
357 * buffer moves.
358 */
359 *max_bytes = us_to_bytes(adev, adev->mm_stats.accum_us);
360
361 /* Do the same for visible VRAM if half of it is free */
362 if (!amdgpu_gmc_vram_full_visible(&adev->gmc)) {
363 u64 total_vis_vram = adev->gmc.visible_vram_size;
364 u64 used_vis_vram =
365 amdgpu_vram_mgr_vis_usage(vram_man);
366
367 if (used_vis_vram < total_vis_vram) {
368 u64 free_vis_vram = total_vis_vram - used_vis_vram;
369 adev->mm_stats.accum_us_vis = min(adev->mm_stats.accum_us_vis +
370 increment_us, us_upper_bound);
371
372 if (free_vis_vram >= total_vis_vram / 2)
373 adev->mm_stats.accum_us_vis =
374 max(bytes_to_us(adev, free_vis_vram / 2),
375 adev->mm_stats.accum_us_vis);
376 }
377
378 *max_vis_bytes = us_to_bytes(adev, adev->mm_stats.accum_us_vis);
379 } else {
380 *max_vis_bytes = 0;
381 }
382
383 spin_unlock(&adev->mm_stats.lock);
384}
385
386/* Report how many bytes have really been moved for the last command
387 * submission. This can result in a debt that can stop buffer migrations
388 * temporarily.
389 */
390void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes,
391 u64 num_vis_bytes)
392{
393 spin_lock(&adev->mm_stats.lock);
394 adev->mm_stats.accum_us -= bytes_to_us(adev, num_bytes);
395 adev->mm_stats.accum_us_vis -= bytes_to_us(adev, num_vis_bytes);
396 spin_unlock(&adev->mm_stats.lock);
397}
398
399static int amdgpu_cs_bo_validate(void *param, struct amdgpu_bo *bo)
400{
401 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
402 struct amdgpu_cs_parser *p = param;
403 struct ttm_operation_ctx ctx = {
404 .interruptible = true,
405 .no_wait_gpu = false,
406 .resv = bo->tbo.base.resv
407 };
408 uint32_t domain;
409 int r;
410
411 if (bo->tbo.pin_count)
412 return 0;
413
414 /* Don't move this buffer if we have depleted our allowance
415 * to move it. Don't move anything if the threshold is zero.
416 */
417 if (p->bytes_moved < p->bytes_moved_threshold &&
418 (!bo->tbo.base.dma_buf ||
419 list_empty(&bo->tbo.base.dma_buf->attachments))) {
420 if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
421 (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)) {
422 /* And don't move a CPU_ACCESS_REQUIRED BO to limited
423 * visible VRAM if we've depleted our allowance to do
424 * that.
425 */
426 if (p->bytes_moved_vis < p->bytes_moved_vis_threshold)
427 domain = bo->preferred_domains;
428 else
429 domain = bo->allowed_domains;
430 } else {
431 domain = bo->preferred_domains;
432 }
433 } else {
434 domain = bo->allowed_domains;
435 }
436
437retry:
438 amdgpu_bo_placement_from_domain(bo, domain);
439 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
440
441 p->bytes_moved += ctx.bytes_moved;
442 if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
443 amdgpu_bo_in_cpu_visible_vram(bo))
444 p->bytes_moved_vis += ctx.bytes_moved;
445
446 if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
447 domain = bo->allowed_domains;
448 goto retry;
449 }
450
451 return r;
452}
453
454static int amdgpu_cs_list_validate(struct amdgpu_cs_parser *p,
455 struct list_head *validated)
456{
457 struct ttm_operation_ctx ctx = { true, false };
458 struct amdgpu_bo_list_entry *lobj;
459 int r;
460
461 list_for_each_entry(lobj, validated, tv.head) {
462 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(lobj->tv.bo);
463 struct mm_struct *usermm;
464
465 usermm = amdgpu_ttm_tt_get_usermm(bo->tbo.ttm);
466 if (usermm && usermm != current->mm)
467 return -EPERM;
468
469 if (amdgpu_ttm_tt_is_userptr(bo->tbo.ttm) &&
470 lobj->user_invalidated && lobj->user_pages) {
471 amdgpu_bo_placement_from_domain(bo,
472 AMDGPU_GEM_DOMAIN_CPU);
473 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
474 if (r)
475 return r;
476
477 amdgpu_ttm_tt_set_user_pages(bo->tbo.ttm,
478 lobj->user_pages);
479 }
480
481 r = amdgpu_cs_bo_validate(p, bo);
482 if (r)
483 return r;
484
485 kvfree(lobj->user_pages);
486 lobj->user_pages = NULL;
487 }
488 return 0;
489}
490
491static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p,
492 union drm_amdgpu_cs *cs)
493{
494 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
495 struct amdgpu_vm *vm = &fpriv->vm;
496 struct amdgpu_bo_list_entry *e;
497 struct list_head duplicates;
498 struct amdgpu_bo *gds;
499 struct amdgpu_bo *gws;
500 struct amdgpu_bo *oa;
501 int r;
502
503 INIT_LIST_HEAD(&p->validated);
504
505 /* p->bo_list could already be assigned if AMDGPU_CHUNK_ID_BO_HANDLES is present */
506 if (cs->in.bo_list_handle) {
507 if (p->bo_list)
508 return -EINVAL;
509
510 r = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle,
511 &p->bo_list);
512 if (r)
513 return r;
514 } else if (!p->bo_list) {
515 /* Create a empty bo_list when no handle is provided */
516 r = amdgpu_bo_list_create(p->adev, p->filp, NULL, 0,
517 &p->bo_list);
518 if (r)
519 return r;
520 }
521
522 /* One for TTM and one for the CS job */
523 amdgpu_bo_list_for_each_entry(e, p->bo_list)
524 e->tv.num_shared = 2;
525
526 amdgpu_bo_list_get_list(p->bo_list, &p->validated);
527
528 INIT_LIST_HEAD(&duplicates);
529 amdgpu_vm_get_pd_bo(&fpriv->vm, &p->validated, &p->vm_pd);
530
531 if (p->uf_entry.tv.bo && !ttm_to_amdgpu_bo(p->uf_entry.tv.bo)->parent)
532 list_add(&p->uf_entry.tv.head, &p->validated);
533
534 /* Get userptr backing pages. If pages are updated after registered
535 * in amdgpu_gem_userptr_ioctl(), amdgpu_cs_list_validate() will do
536 * amdgpu_ttm_backend_bind() to flush and invalidate new pages
537 */
538 amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
539 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
540 bool userpage_invalidated = false;
541 int i;
542
543 e->user_pages = kvmalloc_array(bo->tbo.ttm->num_pages,
544 sizeof(struct page *),
545 GFP_KERNEL | __GFP_ZERO);
546 if (!e->user_pages) {
547 DRM_ERROR("kvmalloc_array failure\n");
548 return -ENOMEM;
549 }
550
551 r = amdgpu_ttm_tt_get_user_pages(bo, e->user_pages);
552 if (r) {
553 kvfree(e->user_pages);
554 e->user_pages = NULL;
555 return r;
556 }
557
558 for (i = 0; i < bo->tbo.ttm->num_pages; i++) {
559 if (bo->tbo.ttm->pages[i] != e->user_pages[i]) {
560 userpage_invalidated = true;
561 break;
562 }
563 }
564 e->user_invalidated = userpage_invalidated;
565 }
566
567 r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true,
568 &duplicates);
569 if (unlikely(r != 0)) {
570 if (r != -ERESTARTSYS)
571 DRM_ERROR("ttm_eu_reserve_buffers failed.\n");
572 goto out;
573 }
574
575 amdgpu_cs_get_threshold_for_moves(p->adev, &p->bytes_moved_threshold,
576 &p->bytes_moved_vis_threshold);
577 p->bytes_moved = 0;
578 p->bytes_moved_vis = 0;
579
580 r = amdgpu_vm_validate_pt_bos(p->adev, &fpriv->vm,
581 amdgpu_cs_bo_validate, p);
582 if (r) {
583 DRM_ERROR("amdgpu_vm_validate_pt_bos() failed.\n");
584 goto error_validate;
585 }
586
587 r = amdgpu_cs_list_validate(p, &duplicates);
588 if (r)
589 goto error_validate;
590
591 r = amdgpu_cs_list_validate(p, &p->validated);
592 if (r)
593 goto error_validate;
594
595 amdgpu_cs_report_moved_bytes(p->adev, p->bytes_moved,
596 p->bytes_moved_vis);
597
598 gds = p->bo_list->gds_obj;
599 gws = p->bo_list->gws_obj;
600 oa = p->bo_list->oa_obj;
601
602 amdgpu_bo_list_for_each_entry(e, p->bo_list) {
603 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
604
605 /* Make sure we use the exclusive slot for shared BOs */
606 if (bo->prime_shared_count)
607 e->tv.num_shared = 0;
608 e->bo_va = amdgpu_vm_bo_find(vm, bo);
609 }
610
611 if (gds) {
612 p->job->gds_base = amdgpu_bo_gpu_offset(gds) >> PAGE_SHIFT;
613 p->job->gds_size = amdgpu_bo_size(gds) >> PAGE_SHIFT;
614 }
615 if (gws) {
616 p->job->gws_base = amdgpu_bo_gpu_offset(gws) >> PAGE_SHIFT;
617 p->job->gws_size = amdgpu_bo_size(gws) >> PAGE_SHIFT;
618 }
619 if (oa) {
620 p->job->oa_base = amdgpu_bo_gpu_offset(oa) >> PAGE_SHIFT;
621 p->job->oa_size = amdgpu_bo_size(oa) >> PAGE_SHIFT;
622 }
623
624 if (!r && p->uf_entry.tv.bo) {
625 struct amdgpu_bo *uf = ttm_to_amdgpu_bo(p->uf_entry.tv.bo);
626
627 r = amdgpu_ttm_alloc_gart(&uf->tbo);
628 p->job->uf_addr += amdgpu_bo_gpu_offset(uf);
629 }
630
631error_validate:
632 if (r)
633 ttm_eu_backoff_reservation(&p->ticket, &p->validated);
634out:
635 return r;
636}
637
638static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p)
639{
640 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
641 struct amdgpu_bo_list_entry *e;
642 int r;
643
644 list_for_each_entry(e, &p->validated, tv.head) {
645 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
646 struct dma_resv *resv = bo->tbo.base.resv;
647 enum amdgpu_sync_mode sync_mode;
648
649 sync_mode = amdgpu_bo_explicit_sync(bo) ?
650 AMDGPU_SYNC_EXPLICIT : AMDGPU_SYNC_NE_OWNER;
651 r = amdgpu_sync_resv(p->adev, &p->job->sync, resv, sync_mode,
652 &fpriv->vm);
653 if (r)
654 return r;
655 }
656 return 0;
657}
658
659/**
660 * amdgpu_cs_parser_fini() - clean parser states
661 * @parser: parser structure holding parsing context.
662 * @error: error number
663 * @backoff: indicator to backoff the reservation
664 *
665 * If error is set then unvalidate buffer, otherwise just free memory
666 * used by parsing context.
667 **/
668static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error,
669 bool backoff)
670{
671 unsigned i;
672
673 if (error && backoff)
674 ttm_eu_backoff_reservation(&parser->ticket,
675 &parser->validated);
676
677 for (i = 0; i < parser->num_post_deps; i++) {
678 drm_syncobj_put(parser->post_deps[i].syncobj);
679 kfree(parser->post_deps[i].chain);
680 }
681 kfree(parser->post_deps);
682
683 dma_fence_put(parser->fence);
684
685 if (parser->ctx) {
686 mutex_unlock(&parser->ctx->lock);
687 amdgpu_ctx_put(parser->ctx);
688 }
689 if (parser->bo_list)
690 amdgpu_bo_list_put(parser->bo_list);
691
692 for (i = 0; i < parser->nchunks; i++)
693 kvfree(parser->chunks[i].kdata);
694 kvfree(parser->chunks);
695 if (parser->job)
696 amdgpu_job_free(parser->job);
697 if (parser->uf_entry.tv.bo) {
698 struct amdgpu_bo *uf = ttm_to_amdgpu_bo(parser->uf_entry.tv.bo);
699
700 amdgpu_bo_unref(&uf);
701 }
702}
703
704static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
705{
706 struct amdgpu_ring *ring = to_amdgpu_ring(p->entity->rq->sched);
707 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
708 struct amdgpu_device *adev = p->adev;
709 struct amdgpu_vm *vm = &fpriv->vm;
710 struct amdgpu_bo_list_entry *e;
711 struct amdgpu_bo_va *bo_va;
712 struct amdgpu_bo *bo;
713 int r;
714
715 /* Only for UVD/VCE VM emulation */
716 if (ring->funcs->parse_cs || ring->funcs->patch_cs_in_place) {
717 unsigned i, j;
718
719 for (i = 0, j = 0; i < p->nchunks && j < p->job->num_ibs; i++) {
720 struct drm_amdgpu_cs_chunk_ib *chunk_ib;
721 struct amdgpu_bo_va_mapping *m;
722 struct amdgpu_bo *aobj = NULL;
723 struct amdgpu_cs_chunk *chunk;
724 uint64_t offset, va_start;
725 struct amdgpu_ib *ib;
726 uint8_t *kptr;
727
728 chunk = &p->chunks[i];
729 ib = &p->job->ibs[j];
730 chunk_ib = chunk->kdata;
731
732 if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
733 continue;
734
735 va_start = chunk_ib->va_start & AMDGPU_GMC_HOLE_MASK;
736 r = amdgpu_cs_find_mapping(p, va_start, &aobj, &m);
737 if (r) {
738 DRM_ERROR("IB va_start is invalid\n");
739 return r;
740 }
741
742 if ((va_start + chunk_ib->ib_bytes) >
743 (m->last + 1) * AMDGPU_GPU_PAGE_SIZE) {
744 DRM_ERROR("IB va_start+ib_bytes is invalid\n");
745 return -EINVAL;
746 }
747
748 /* the IB should be reserved at this point */
749 r = amdgpu_bo_kmap(aobj, (void **)&kptr);
750 if (r) {
751 return r;
752 }
753
754 offset = m->start * AMDGPU_GPU_PAGE_SIZE;
755 kptr += va_start - offset;
756
757 if (ring->funcs->parse_cs) {
758 memcpy(ib->ptr, kptr, chunk_ib->ib_bytes);
759 amdgpu_bo_kunmap(aobj);
760
761 r = amdgpu_ring_parse_cs(ring, p, j);
762 if (r)
763 return r;
764 } else {
765 ib->ptr = (uint32_t *)kptr;
766 r = amdgpu_ring_patch_cs_in_place(ring, p, j);
767 amdgpu_bo_kunmap(aobj);
768 if (r)
769 return r;
770 }
771
772 j++;
773 }
774 }
775
776 if (!p->job->vm)
777 return amdgpu_cs_sync_rings(p);
778
779
780 r = amdgpu_vm_clear_freed(adev, vm, NULL);
781 if (r)
782 return r;
783
784 r = amdgpu_vm_bo_update(adev, fpriv->prt_va, false);
785 if (r)
786 return r;
787
788 r = amdgpu_sync_vm_fence(&p->job->sync, fpriv->prt_va->last_pt_update);
789 if (r)
790 return r;
791
792 if (amdgpu_mcbp || amdgpu_sriov_vf(adev)) {
793 bo_va = fpriv->csa_va;
794 BUG_ON(!bo_va);
795 r = amdgpu_vm_bo_update(adev, bo_va, false);
796 if (r)
797 return r;
798
799 r = amdgpu_sync_vm_fence(&p->job->sync, bo_va->last_pt_update);
800 if (r)
801 return r;
802 }
803
804 amdgpu_bo_list_for_each_entry(e, p->bo_list) {
805 /* ignore duplicates */
806 bo = ttm_to_amdgpu_bo(e->tv.bo);
807 if (!bo)
808 continue;
809
810 bo_va = e->bo_va;
811 if (bo_va == NULL)
812 continue;
813
814 r = amdgpu_vm_bo_update(adev, bo_va, false);
815 if (r)
816 return r;
817
818 r = amdgpu_sync_vm_fence(&p->job->sync, bo_va->last_pt_update);
819 if (r)
820 return r;
821 }
822
823 r = amdgpu_vm_handle_moved(adev, vm);
824 if (r)
825 return r;
826
827 r = amdgpu_vm_update_pdes(adev, vm, false);
828 if (r)
829 return r;
830
831 r = amdgpu_sync_vm_fence(&p->job->sync, vm->last_update);
832 if (r)
833 return r;
834
835 p->job->vm_pd_addr = amdgpu_gmc_pd_addr(vm->root.bo);
836
837 if (amdgpu_vm_debug) {
838 /* Invalidate all BOs to test for userspace bugs */
839 amdgpu_bo_list_for_each_entry(e, p->bo_list) {
840 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
841
842 /* ignore duplicates */
843 if (!bo)
844 continue;
845
846 amdgpu_vm_bo_invalidate(adev, bo, false);
847 }
848 }
849
850 return amdgpu_cs_sync_rings(p);
851}
852
853static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
854 struct amdgpu_cs_parser *parser)
855{
856 struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
857 struct amdgpu_vm *vm = &fpriv->vm;
858 int r, ce_preempt = 0, de_preempt = 0;
859 struct amdgpu_ring *ring;
860 int i, j;
861
862 for (i = 0, j = 0; i < parser->nchunks && j < parser->job->num_ibs; i++) {
863 struct amdgpu_cs_chunk *chunk;
864 struct amdgpu_ib *ib;
865 struct drm_amdgpu_cs_chunk_ib *chunk_ib;
866 struct drm_sched_entity *entity;
867
868 chunk = &parser->chunks[i];
869 ib = &parser->job->ibs[j];
870 chunk_ib = (struct drm_amdgpu_cs_chunk_ib *)chunk->kdata;
871
872 if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
873 continue;
874
875 if (chunk_ib->ip_type == AMDGPU_HW_IP_GFX &&
876 (amdgpu_mcbp || amdgpu_sriov_vf(adev))) {
877 if (chunk_ib->flags & AMDGPU_IB_FLAG_PREEMPT) {
878 if (chunk_ib->flags & AMDGPU_IB_FLAG_CE)
879 ce_preempt++;
880 else
881 de_preempt++;
882 }
883
884 /* each GFX command submit allows 0 or 1 IB preemptible for CE & DE */
885 if (ce_preempt > 1 || de_preempt > 1)
886 return -EINVAL;
887 }
888
889 r = amdgpu_ctx_get_entity(parser->ctx, chunk_ib->ip_type,
890 chunk_ib->ip_instance, chunk_ib->ring,
891 &entity);
892 if (r)
893 return r;
894
895 if (chunk_ib->flags & AMDGPU_IB_FLAG_PREAMBLE)
896 parser->job->preamble_status |=
897 AMDGPU_PREAMBLE_IB_PRESENT;
898
899 if (parser->entity && parser->entity != entity)
900 return -EINVAL;
901
902 /* Return if there is no run queue associated with this entity.
903 * Possibly because of disabled HW IP*/
904 if (entity->rq == NULL)
905 return -EINVAL;
906
907 parser->entity = entity;
908
909 ring = to_amdgpu_ring(entity->rq->sched);
910 r = amdgpu_ib_get(adev, vm, ring->funcs->parse_cs ?
911 chunk_ib->ib_bytes : 0,
912 AMDGPU_IB_POOL_DELAYED, ib);
913 if (r) {
914 DRM_ERROR("Failed to get ib !\n");
915 return r;
916 }
917
918 ib->gpu_addr = chunk_ib->va_start;
919 ib->length_dw = chunk_ib->ib_bytes / 4;
920 ib->flags = chunk_ib->flags;
921
922 j++;
923 }
924
925 /* MM engine doesn't support user fences */
926 ring = to_amdgpu_ring(parser->entity->rq->sched);
927 if (parser->job->uf_addr && ring->funcs->no_user_fence)
928 return -EINVAL;
929
930 return amdgpu_ctx_wait_prev_fence(parser->ctx, parser->entity);
931}
932
933static int amdgpu_cs_process_fence_dep(struct amdgpu_cs_parser *p,
934 struct amdgpu_cs_chunk *chunk)
935{
936 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
937 unsigned num_deps;
938 int i, r;
939 struct drm_amdgpu_cs_chunk_dep *deps;
940
941 deps = (struct drm_amdgpu_cs_chunk_dep *)chunk->kdata;
942 num_deps = chunk->length_dw * 4 /
943 sizeof(struct drm_amdgpu_cs_chunk_dep);
944
945 for (i = 0; i < num_deps; ++i) {
946 struct amdgpu_ctx *ctx;
947 struct drm_sched_entity *entity;
948 struct dma_fence *fence;
949
950 ctx = amdgpu_ctx_get(fpriv, deps[i].ctx_id);
951 if (ctx == NULL)
952 return -EINVAL;
953
954 r = amdgpu_ctx_get_entity(ctx, deps[i].ip_type,
955 deps[i].ip_instance,
956 deps[i].ring, &entity);
957 if (r) {
958 amdgpu_ctx_put(ctx);
959 return r;
960 }
961
962 fence = amdgpu_ctx_get_fence(ctx, entity, deps[i].handle);
963 amdgpu_ctx_put(ctx);
964
965 if (IS_ERR(fence))
966 return PTR_ERR(fence);
967 else if (!fence)
968 continue;
969
970 if (chunk->chunk_id == AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES) {
971 struct drm_sched_fence *s_fence;
972 struct dma_fence *old = fence;
973
974 s_fence = to_drm_sched_fence(fence);
975 fence = dma_fence_get(&s_fence->scheduled);
976 dma_fence_put(old);
977 }
978
979 r = amdgpu_sync_fence(&p->job->sync, fence);
980 dma_fence_put(fence);
981 if (r)
982 return r;
983 }
984 return 0;
985}
986
987static int amdgpu_syncobj_lookup_and_add_to_sync(struct amdgpu_cs_parser *p,
988 uint32_t handle, u64 point,
989 u64 flags)
990{
991 struct dma_fence *fence;
992 int r;
993
994 r = drm_syncobj_find_fence(p->filp, handle, point, flags, &fence);
995 if (r) {
996 DRM_ERROR("syncobj %u failed to find fence @ %llu (%d)!\n",
997 handle, point, r);
998 return r;
999 }
1000
1001 r = amdgpu_sync_fence(&p->job->sync, fence);
1002 dma_fence_put(fence);
1003
1004 return r;
1005}
1006
1007static int amdgpu_cs_process_syncobj_in_dep(struct amdgpu_cs_parser *p,
1008 struct amdgpu_cs_chunk *chunk)
1009{
1010 struct drm_amdgpu_cs_chunk_sem *deps;
1011 unsigned num_deps;
1012 int i, r;
1013
1014 deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata;
1015 num_deps = chunk->length_dw * 4 /
1016 sizeof(struct drm_amdgpu_cs_chunk_sem);
1017 for (i = 0; i < num_deps; ++i) {
1018 r = amdgpu_syncobj_lookup_and_add_to_sync(p, deps[i].handle,
1019 0, 0);
1020 if (r)
1021 return r;
1022 }
1023
1024 return 0;
1025}
1026
1027
1028static int amdgpu_cs_process_syncobj_timeline_in_dep(struct amdgpu_cs_parser *p,
1029 struct amdgpu_cs_chunk *chunk)
1030{
1031 struct drm_amdgpu_cs_chunk_syncobj *syncobj_deps;
1032 unsigned num_deps;
1033 int i, r;
1034
1035 syncobj_deps = (struct drm_amdgpu_cs_chunk_syncobj *)chunk->kdata;
1036 num_deps = chunk->length_dw * 4 /
1037 sizeof(struct drm_amdgpu_cs_chunk_syncobj);
1038 for (i = 0; i < num_deps; ++i) {
1039 r = amdgpu_syncobj_lookup_and_add_to_sync(p,
1040 syncobj_deps[i].handle,
1041 syncobj_deps[i].point,
1042 syncobj_deps[i].flags);
1043 if (r)
1044 return r;
1045 }
1046
1047 return 0;
1048}
1049
1050static int amdgpu_cs_process_syncobj_out_dep(struct amdgpu_cs_parser *p,
1051 struct amdgpu_cs_chunk *chunk)
1052{
1053 struct drm_amdgpu_cs_chunk_sem *deps;
1054 unsigned num_deps;
1055 int i;
1056
1057 deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata;
1058 num_deps = chunk->length_dw * 4 /
1059 sizeof(struct drm_amdgpu_cs_chunk_sem);
1060
1061 if (p->post_deps)
1062 return -EINVAL;
1063
1064 p->post_deps = kmalloc_array(num_deps, sizeof(*p->post_deps),
1065 GFP_KERNEL);
1066 p->num_post_deps = 0;
1067
1068 if (!p->post_deps)
1069 return -ENOMEM;
1070
1071
1072 for (i = 0; i < num_deps; ++i) {
1073 p->post_deps[i].syncobj =
1074 drm_syncobj_find(p->filp, deps[i].handle);
1075 if (!p->post_deps[i].syncobj)
1076 return -EINVAL;
1077 p->post_deps[i].chain = NULL;
1078 p->post_deps[i].point = 0;
1079 p->num_post_deps++;
1080 }
1081
1082 return 0;
1083}
1084
1085
1086static int amdgpu_cs_process_syncobj_timeline_out_dep(struct amdgpu_cs_parser *p,
1087 struct amdgpu_cs_chunk *chunk)
1088{
1089 struct drm_amdgpu_cs_chunk_syncobj *syncobj_deps;
1090 unsigned num_deps;
1091 int i;
1092
1093 syncobj_deps = (struct drm_amdgpu_cs_chunk_syncobj *)chunk->kdata;
1094 num_deps = chunk->length_dw * 4 /
1095 sizeof(struct drm_amdgpu_cs_chunk_syncobj);
1096
1097 if (p->post_deps)
1098 return -EINVAL;
1099
1100 p->post_deps = kmalloc_array(num_deps, sizeof(*p->post_deps),
1101 GFP_KERNEL);
1102 p->num_post_deps = 0;
1103
1104 if (!p->post_deps)
1105 return -ENOMEM;
1106
1107 for (i = 0; i < num_deps; ++i) {
1108 struct amdgpu_cs_post_dep *dep = &p->post_deps[i];
1109
1110 dep->chain = NULL;
1111 if (syncobj_deps[i].point) {
1112 dep->chain = kmalloc(sizeof(*dep->chain), GFP_KERNEL);
1113 if (!dep->chain)
1114 return -ENOMEM;
1115 }
1116
1117 dep->syncobj = drm_syncobj_find(p->filp,
1118 syncobj_deps[i].handle);
1119 if (!dep->syncobj) {
1120 kfree(dep->chain);
1121 return -EINVAL;
1122 }
1123 dep->point = syncobj_deps[i].point;
1124 p->num_post_deps++;
1125 }
1126
1127 return 0;
1128}
1129
1130static int amdgpu_cs_dependencies(struct amdgpu_device *adev,
1131 struct amdgpu_cs_parser *p)
1132{
1133 int i, r;
1134
1135 for (i = 0; i < p->nchunks; ++i) {
1136 struct amdgpu_cs_chunk *chunk;
1137
1138 chunk = &p->chunks[i];
1139
1140 switch (chunk->chunk_id) {
1141 case AMDGPU_CHUNK_ID_DEPENDENCIES:
1142 case AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES:
1143 r = amdgpu_cs_process_fence_dep(p, chunk);
1144 if (r)
1145 return r;
1146 break;
1147 case AMDGPU_CHUNK_ID_SYNCOBJ_IN:
1148 r = amdgpu_cs_process_syncobj_in_dep(p, chunk);
1149 if (r)
1150 return r;
1151 break;
1152 case AMDGPU_CHUNK_ID_SYNCOBJ_OUT:
1153 r = amdgpu_cs_process_syncobj_out_dep(p, chunk);
1154 if (r)
1155 return r;
1156 break;
1157 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_WAIT:
1158 r = amdgpu_cs_process_syncobj_timeline_in_dep(p, chunk);
1159 if (r)
1160 return r;
1161 break;
1162 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_SIGNAL:
1163 r = amdgpu_cs_process_syncobj_timeline_out_dep(p, chunk);
1164 if (r)
1165 return r;
1166 break;
1167 }
1168 }
1169
1170 return 0;
1171}
1172
1173static void amdgpu_cs_post_dependencies(struct amdgpu_cs_parser *p)
1174{
1175 int i;
1176
1177 for (i = 0; i < p->num_post_deps; ++i) {
1178 if (p->post_deps[i].chain && p->post_deps[i].point) {
1179 drm_syncobj_add_point(p->post_deps[i].syncobj,
1180 p->post_deps[i].chain,
1181 p->fence, p->post_deps[i].point);
1182 p->post_deps[i].chain = NULL;
1183 } else {
1184 drm_syncobj_replace_fence(p->post_deps[i].syncobj,
1185 p->fence);
1186 }
1187 }
1188}
1189
1190static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
1191 union drm_amdgpu_cs *cs)
1192{
1193 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
1194 struct drm_sched_entity *entity = p->entity;
1195 struct amdgpu_bo_list_entry *e;
1196 struct amdgpu_job *job;
1197 uint64_t seq;
1198 int r;
1199
1200 job = p->job;
1201 p->job = NULL;
1202
1203 r = drm_sched_job_init(&job->base, entity, &fpriv->vm);
1204 if (r)
1205 goto error_unlock;
1206
1207 /* No memory allocation is allowed while holding the notifier lock.
1208 * The lock is held until amdgpu_cs_submit is finished and fence is
1209 * added to BOs.
1210 */
1211 mutex_lock(&p->adev->notifier_lock);
1212
1213 /* If userptr are invalidated after amdgpu_cs_parser_bos(), return
1214 * -EAGAIN, drmIoctl in libdrm will restart the amdgpu_cs_ioctl.
1215 */
1216 amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
1217 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
1218
1219 r |= !amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm);
1220 }
1221 if (r) {
1222 r = -EAGAIN;
1223 goto error_abort;
1224 }
1225
1226 p->fence = dma_fence_get(&job->base.s_fence->finished);
1227
1228 amdgpu_ctx_add_fence(p->ctx, entity, p->fence, &seq);
1229 amdgpu_cs_post_dependencies(p);
1230
1231 if ((job->preamble_status & AMDGPU_PREAMBLE_IB_PRESENT) &&
1232 !p->ctx->preamble_presented) {
1233 job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT_FIRST;
1234 p->ctx->preamble_presented = true;
1235 }
1236
1237 cs->out.handle = seq;
1238 job->uf_sequence = seq;
1239
1240 amdgpu_job_free_resources(job);
1241
1242 trace_amdgpu_cs_ioctl(job);
1243 amdgpu_vm_bo_trace_cs(&fpriv->vm, &p->ticket);
1244 drm_sched_entity_push_job(&job->base, entity);
1245
1246 amdgpu_vm_move_to_lru_tail(p->adev, &fpriv->vm);
1247
1248 ttm_eu_fence_buffer_objects(&p->ticket, &p->validated, p->fence);
1249 mutex_unlock(&p->adev->notifier_lock);
1250
1251 return 0;
1252
1253error_abort:
1254 drm_sched_job_cleanup(&job->base);
1255 mutex_unlock(&p->adev->notifier_lock);
1256
1257error_unlock:
1258 amdgpu_job_free(job);
1259 return r;
1260}
1261
1262static void trace_amdgpu_cs_ibs(struct amdgpu_cs_parser *parser)
1263{
1264 int i;
1265
1266 if (!trace_amdgpu_cs_enabled())
1267 return;
1268
1269 for (i = 0; i < parser->job->num_ibs; i++)
1270 trace_amdgpu_cs(parser, i);
1271}
1272
1273int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
1274{
1275 struct amdgpu_device *adev = drm_to_adev(dev);
1276 union drm_amdgpu_cs *cs = data;
1277 struct amdgpu_cs_parser parser = {};
1278 bool reserved_buffers = false;
1279 int r;
1280
1281 if (amdgpu_ras_intr_triggered())
1282 return -EHWPOISON;
1283
1284 if (!adev->accel_working)
1285 return -EBUSY;
1286
1287 parser.adev = adev;
1288 parser.filp = filp;
1289
1290 r = amdgpu_cs_parser_init(&parser, data);
1291 if (r) {
1292 if (printk_ratelimit())
1293 DRM_ERROR("Failed to initialize parser %d!\n", r);
1294 goto out;
1295 }
1296
1297 r = amdgpu_cs_ib_fill(adev, &parser);
1298 if (r)
1299 goto out;
1300
1301 r = amdgpu_cs_dependencies(adev, &parser);
1302 if (r) {
1303 DRM_ERROR("Failed in the dependencies handling %d!\n", r);
1304 goto out;
1305 }
1306
1307 r = amdgpu_cs_parser_bos(&parser, data);
1308 if (r) {
1309 if (r == -ENOMEM)
1310 DRM_ERROR("Not enough memory for command submission!\n");
1311 else if (r != -ERESTARTSYS && r != -EAGAIN)
1312 DRM_ERROR("Failed to process the buffer list %d!\n", r);
1313 goto out;
1314 }
1315
1316 reserved_buffers = true;
1317
1318 trace_amdgpu_cs_ibs(&parser);
1319
1320 r = amdgpu_cs_vm_handling(&parser);
1321 if (r)
1322 goto out;
1323
1324 r = amdgpu_cs_submit(&parser, cs);
1325
1326out:
1327 amdgpu_cs_parser_fini(&parser, r, reserved_buffers);
1328
1329 return r;
1330}
1331
1332/**
1333 * amdgpu_cs_wait_ioctl - wait for a command submission to finish
1334 *
1335 * @dev: drm device
1336 * @data: data from userspace
1337 * @filp: file private
1338 *
1339 * Wait for the command submission identified by handle to finish.
1340 */
1341int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data,
1342 struct drm_file *filp)
1343{
1344 union drm_amdgpu_wait_cs *wait = data;
1345 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout);
1346 struct drm_sched_entity *entity;
1347 struct amdgpu_ctx *ctx;
1348 struct dma_fence *fence;
1349 long r;
1350
1351 ctx = amdgpu_ctx_get(filp->driver_priv, wait->in.ctx_id);
1352 if (ctx == NULL)
1353 return -EINVAL;
1354
1355 r = amdgpu_ctx_get_entity(ctx, wait->in.ip_type, wait->in.ip_instance,
1356 wait->in.ring, &entity);
1357 if (r) {
1358 amdgpu_ctx_put(ctx);
1359 return r;
1360 }
1361
1362 fence = amdgpu_ctx_get_fence(ctx, entity, wait->in.handle);
1363 if (IS_ERR(fence))
1364 r = PTR_ERR(fence);
1365 else if (fence) {
1366 r = dma_fence_wait_timeout(fence, true, timeout);
1367 if (r > 0 && fence->error)
1368 r = fence->error;
1369 dma_fence_put(fence);
1370 } else
1371 r = 1;
1372
1373 amdgpu_ctx_put(ctx);
1374 if (r < 0)
1375 return r;
1376
1377 memset(wait, 0, sizeof(*wait));
1378 wait->out.status = (r == 0);
1379
1380 return 0;
1381}
1382
1383/**
1384 * amdgpu_cs_get_fence - helper to get fence from drm_amdgpu_fence
1385 *
1386 * @adev: amdgpu device
1387 * @filp: file private
1388 * @user: drm_amdgpu_fence copied from user space
1389 */
1390static struct dma_fence *amdgpu_cs_get_fence(struct amdgpu_device *adev,
1391 struct drm_file *filp,
1392 struct drm_amdgpu_fence *user)
1393{
1394 struct drm_sched_entity *entity;
1395 struct amdgpu_ctx *ctx;
1396 struct dma_fence *fence;
1397 int r;
1398
1399 ctx = amdgpu_ctx_get(filp->driver_priv, user->ctx_id);
1400 if (ctx == NULL)
1401 return ERR_PTR(-EINVAL);
1402
1403 r = amdgpu_ctx_get_entity(ctx, user->ip_type, user->ip_instance,
1404 user->ring, &entity);
1405 if (r) {
1406 amdgpu_ctx_put(ctx);
1407 return ERR_PTR(r);
1408 }
1409
1410 fence = amdgpu_ctx_get_fence(ctx, entity, user->seq_no);
1411 amdgpu_ctx_put(ctx);
1412
1413 return fence;
1414}
1415
1416int amdgpu_cs_fence_to_handle_ioctl(struct drm_device *dev, void *data,
1417 struct drm_file *filp)
1418{
1419 struct amdgpu_device *adev = drm_to_adev(dev);
1420 union drm_amdgpu_fence_to_handle *info = data;
1421 struct dma_fence *fence;
1422 struct drm_syncobj *syncobj;
1423 struct sync_file *sync_file;
1424 int fd, r;
1425
1426 fence = amdgpu_cs_get_fence(adev, filp, &info->in.fence);
1427 if (IS_ERR(fence))
1428 return PTR_ERR(fence);
1429
1430 if (!fence)
1431 fence = dma_fence_get_stub();
1432
1433 switch (info->in.what) {
1434 case AMDGPU_FENCE_TO_HANDLE_GET_SYNCOBJ:
1435 r = drm_syncobj_create(&syncobj, 0, fence);
1436 dma_fence_put(fence);
1437 if (r)
1438 return r;
1439 r = drm_syncobj_get_handle(filp, syncobj, &info->out.handle);
1440 drm_syncobj_put(syncobj);
1441 return r;
1442
1443 case AMDGPU_FENCE_TO_HANDLE_GET_SYNCOBJ_FD:
1444 r = drm_syncobj_create(&syncobj, 0, fence);
1445 dma_fence_put(fence);
1446 if (r)
1447 return r;
1448 r = drm_syncobj_get_fd(syncobj, (int *)&info->out.handle);
1449 drm_syncobj_put(syncobj);
1450 return r;
1451
1452 case AMDGPU_FENCE_TO_HANDLE_GET_SYNC_FILE_FD:
1453 fd = get_unused_fd_flags(O_CLOEXEC);
1454 if (fd < 0) {
1455 dma_fence_put(fence);
1456 return fd;
1457 }
1458
1459 sync_file = sync_file_create(fence);
1460 dma_fence_put(fence);
1461 if (!sync_file) {
1462 put_unused_fd(fd);
1463 return -ENOMEM;
1464 }
1465
1466 fd_install(fd, sync_file->file);
1467 info->out.handle = fd;
1468 return 0;
1469
1470 default:
1471 return -EINVAL;
1472 }
1473}
1474
1475/**
1476 * amdgpu_cs_wait_all_fences - wait on all fences to signal
1477 *
1478 * @adev: amdgpu device
1479 * @filp: file private
1480 * @wait: wait parameters
1481 * @fences: array of drm_amdgpu_fence
1482 */
1483static int amdgpu_cs_wait_all_fences(struct amdgpu_device *adev,
1484 struct drm_file *filp,
1485 union drm_amdgpu_wait_fences *wait,
1486 struct drm_amdgpu_fence *fences)
1487{
1488 uint32_t fence_count = wait->in.fence_count;
1489 unsigned int i;
1490 long r = 1;
1491
1492 for (i = 0; i < fence_count; i++) {
1493 struct dma_fence *fence;
1494 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1495
1496 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1497 if (IS_ERR(fence))
1498 return PTR_ERR(fence);
1499 else if (!fence)
1500 continue;
1501
1502 r = dma_fence_wait_timeout(fence, true, timeout);
1503 dma_fence_put(fence);
1504 if (r < 0)
1505 return r;
1506
1507 if (r == 0)
1508 break;
1509
1510 if (fence->error)
1511 return fence->error;
1512 }
1513
1514 memset(wait, 0, sizeof(*wait));
1515 wait->out.status = (r > 0);
1516
1517 return 0;
1518}
1519
1520/**
1521 * amdgpu_cs_wait_any_fence - wait on any fence to signal
1522 *
1523 * @adev: amdgpu device
1524 * @filp: file private
1525 * @wait: wait parameters
1526 * @fences: array of drm_amdgpu_fence
1527 */
1528static int amdgpu_cs_wait_any_fence(struct amdgpu_device *adev,
1529 struct drm_file *filp,
1530 union drm_amdgpu_wait_fences *wait,
1531 struct drm_amdgpu_fence *fences)
1532{
1533 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1534 uint32_t fence_count = wait->in.fence_count;
1535 uint32_t first = ~0;
1536 struct dma_fence **array;
1537 unsigned int i;
1538 long r;
1539
1540 /* Prepare the fence array */
1541 array = kcalloc(fence_count, sizeof(struct dma_fence *), GFP_KERNEL);
1542
1543 if (array == NULL)
1544 return -ENOMEM;
1545
1546 for (i = 0; i < fence_count; i++) {
1547 struct dma_fence *fence;
1548
1549 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1550 if (IS_ERR(fence)) {
1551 r = PTR_ERR(fence);
1552 goto err_free_fence_array;
1553 } else if (fence) {
1554 array[i] = fence;
1555 } else { /* NULL, the fence has been already signaled */
1556 r = 1;
1557 first = i;
1558 goto out;
1559 }
1560 }
1561
1562 r = dma_fence_wait_any_timeout(array, fence_count, true, timeout,
1563 &first);
1564 if (r < 0)
1565 goto err_free_fence_array;
1566
1567out:
1568 memset(wait, 0, sizeof(*wait));
1569 wait->out.status = (r > 0);
1570 wait->out.first_signaled = first;
1571
1572 if (first < fence_count && array[first])
1573 r = array[first]->error;
1574 else
1575 r = 0;
1576
1577err_free_fence_array:
1578 for (i = 0; i < fence_count; i++)
1579 dma_fence_put(array[i]);
1580 kfree(array);
1581
1582 return r;
1583}
1584
1585/**
1586 * amdgpu_cs_wait_fences_ioctl - wait for multiple command submissions to finish
1587 *
1588 * @dev: drm device
1589 * @data: data from userspace
1590 * @filp: file private
1591 */
1592int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data,
1593 struct drm_file *filp)
1594{
1595 struct amdgpu_device *adev = drm_to_adev(dev);
1596 union drm_amdgpu_wait_fences *wait = data;
1597 uint32_t fence_count = wait->in.fence_count;
1598 struct drm_amdgpu_fence *fences_user;
1599 struct drm_amdgpu_fence *fences;
1600 int r;
1601
1602 /* Get the fences from userspace */
1603 fences = kmalloc_array(fence_count, sizeof(struct drm_amdgpu_fence),
1604 GFP_KERNEL);
1605 if (fences == NULL)
1606 return -ENOMEM;
1607
1608 fences_user = u64_to_user_ptr(wait->in.fences);
1609 if (copy_from_user(fences, fences_user,
1610 sizeof(struct drm_amdgpu_fence) * fence_count)) {
1611 r = -EFAULT;
1612 goto err_free_fences;
1613 }
1614
1615 if (wait->in.wait_all)
1616 r = amdgpu_cs_wait_all_fences(adev, filp, wait, fences);
1617 else
1618 r = amdgpu_cs_wait_any_fence(adev, filp, wait, fences);
1619
1620err_free_fences:
1621 kfree(fences);
1622
1623 return r;
1624}
1625
1626/**
1627 * amdgpu_cs_find_mapping - find bo_va for VM address
1628 *
1629 * @parser: command submission parser context
1630 * @addr: VM address
1631 * @bo: resulting BO of the mapping found
1632 * @map: Placeholder to return found BO mapping
1633 *
1634 * Search the buffer objects in the command submission context for a certain
1635 * virtual memory address. Returns allocation structure when found, NULL
1636 * otherwise.
1637 */
1638int amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
1639 uint64_t addr, struct amdgpu_bo **bo,
1640 struct amdgpu_bo_va_mapping **map)
1641{
1642 struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
1643 struct ttm_operation_ctx ctx = { false, false };
1644 struct amdgpu_vm *vm = &fpriv->vm;
1645 struct amdgpu_bo_va_mapping *mapping;
1646 int r;
1647
1648 addr /= AMDGPU_GPU_PAGE_SIZE;
1649
1650 mapping = amdgpu_vm_bo_lookup_mapping(vm, addr);
1651 if (!mapping || !mapping->bo_va || !mapping->bo_va->base.bo)
1652 return -EINVAL;
1653
1654 *bo = mapping->bo_va->base.bo;
1655 *map = mapping;
1656
1657 /* Double check that the BO is reserved by this CS */
1658 if (dma_resv_locking_ctx((*bo)->tbo.base.resv) != &parser->ticket)
1659 return -EINVAL;
1660
1661 if (!((*bo)->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)) {
1662 (*bo)->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
1663 amdgpu_bo_placement_from_domain(*bo, (*bo)->allowed_domains);
1664 r = ttm_bo_validate(&(*bo)->tbo, &(*bo)->placement, &ctx);
1665 if (r)
1666 return r;
1667 }
1668
1669 return amdgpu_ttm_alloc_gart(&(*bo)->tbo);
1670}
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 "amdgpu.h"
31#include "amdgpu_trace.h"
32
33int amdgpu_cs_get_ring(struct amdgpu_device *adev, u32 ip_type,
34 u32 ip_instance, u32 ring,
35 struct amdgpu_ring **out_ring)
36{
37 /* Right now all IPs have only one instance - multiple rings. */
38 if (ip_instance != 0) {
39 DRM_ERROR("invalid ip instance: %d\n", ip_instance);
40 return -EINVAL;
41 }
42
43 switch (ip_type) {
44 default:
45 DRM_ERROR("unknown ip type: %d\n", ip_type);
46 return -EINVAL;
47 case AMDGPU_HW_IP_GFX:
48 if (ring < adev->gfx.num_gfx_rings) {
49 *out_ring = &adev->gfx.gfx_ring[ring];
50 } else {
51 DRM_ERROR("only %d gfx rings are supported now\n",
52 adev->gfx.num_gfx_rings);
53 return -EINVAL;
54 }
55 break;
56 case AMDGPU_HW_IP_COMPUTE:
57 if (ring < adev->gfx.num_compute_rings) {
58 *out_ring = &adev->gfx.compute_ring[ring];
59 } else {
60 DRM_ERROR("only %d compute rings are supported now\n",
61 adev->gfx.num_compute_rings);
62 return -EINVAL;
63 }
64 break;
65 case AMDGPU_HW_IP_DMA:
66 if (ring < adev->sdma.num_instances) {
67 *out_ring = &adev->sdma.instance[ring].ring;
68 } else {
69 DRM_ERROR("only %d SDMA rings are supported\n",
70 adev->sdma.num_instances);
71 return -EINVAL;
72 }
73 break;
74 case AMDGPU_HW_IP_UVD:
75 *out_ring = &adev->uvd.ring;
76 break;
77 case AMDGPU_HW_IP_VCE:
78 if (ring < 2){
79 *out_ring = &adev->vce.ring[ring];
80 } else {
81 DRM_ERROR("only two VCE rings are supported\n");
82 return -EINVAL;
83 }
84 break;
85 }
86
87 if (!(*out_ring && (*out_ring)->adev)) {
88 DRM_ERROR("Ring %d is not initialized on IP %d\n",
89 ring, ip_type);
90 return -EINVAL;
91 }
92
93 return 0;
94}
95
96static int amdgpu_cs_user_fence_chunk(struct amdgpu_cs_parser *p,
97 struct drm_amdgpu_cs_chunk_fence *data,
98 uint32_t *offset)
99{
100 struct drm_gem_object *gobj;
101 unsigned long size;
102
103 gobj = drm_gem_object_lookup(p->filp, data->handle);
104 if (gobj == NULL)
105 return -EINVAL;
106
107 p->uf_entry.robj = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj));
108 p->uf_entry.priority = 0;
109 p->uf_entry.tv.bo = &p->uf_entry.robj->tbo;
110 p->uf_entry.tv.shared = true;
111 p->uf_entry.user_pages = NULL;
112
113 size = amdgpu_bo_size(p->uf_entry.robj);
114 if (size != PAGE_SIZE || (data->offset + 8) > size)
115 return -EINVAL;
116
117 *offset = data->offset;
118
119 drm_gem_object_unreference_unlocked(gobj);
120
121 if (amdgpu_ttm_tt_get_usermm(p->uf_entry.robj->tbo.ttm)) {
122 amdgpu_bo_unref(&p->uf_entry.robj);
123 return -EINVAL;
124 }
125
126 return 0;
127}
128
129int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data)
130{
131 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
132 struct amdgpu_vm *vm = &fpriv->vm;
133 union drm_amdgpu_cs *cs = data;
134 uint64_t *chunk_array_user;
135 uint64_t *chunk_array;
136 unsigned size, num_ibs = 0;
137 uint32_t uf_offset = 0;
138 int i;
139 int ret;
140
141 if (cs->in.num_chunks == 0)
142 return 0;
143
144 chunk_array = kmalloc_array(cs->in.num_chunks, sizeof(uint64_t), GFP_KERNEL);
145 if (!chunk_array)
146 return -ENOMEM;
147
148 p->ctx = amdgpu_ctx_get(fpriv, cs->in.ctx_id);
149 if (!p->ctx) {
150 ret = -EINVAL;
151 goto free_chunk;
152 }
153
154 /* get chunks */
155 chunk_array_user = (uint64_t __user *)(unsigned long)(cs->in.chunks);
156 if (copy_from_user(chunk_array, chunk_array_user,
157 sizeof(uint64_t)*cs->in.num_chunks)) {
158 ret = -EFAULT;
159 goto put_ctx;
160 }
161
162 p->nchunks = cs->in.num_chunks;
163 p->chunks = kmalloc_array(p->nchunks, sizeof(struct amdgpu_cs_chunk),
164 GFP_KERNEL);
165 if (!p->chunks) {
166 ret = -ENOMEM;
167 goto put_ctx;
168 }
169
170 for (i = 0; i < p->nchunks; i++) {
171 struct drm_amdgpu_cs_chunk __user **chunk_ptr = NULL;
172 struct drm_amdgpu_cs_chunk user_chunk;
173 uint32_t __user *cdata;
174
175 chunk_ptr = (void __user *)(unsigned long)chunk_array[i];
176 if (copy_from_user(&user_chunk, chunk_ptr,
177 sizeof(struct drm_amdgpu_cs_chunk))) {
178 ret = -EFAULT;
179 i--;
180 goto free_partial_kdata;
181 }
182 p->chunks[i].chunk_id = user_chunk.chunk_id;
183 p->chunks[i].length_dw = user_chunk.length_dw;
184
185 size = p->chunks[i].length_dw;
186 cdata = (void __user *)(unsigned long)user_chunk.chunk_data;
187
188 p->chunks[i].kdata = drm_malloc_ab(size, sizeof(uint32_t));
189 if (p->chunks[i].kdata == NULL) {
190 ret = -ENOMEM;
191 i--;
192 goto free_partial_kdata;
193 }
194 size *= sizeof(uint32_t);
195 if (copy_from_user(p->chunks[i].kdata, cdata, size)) {
196 ret = -EFAULT;
197 goto free_partial_kdata;
198 }
199
200 switch (p->chunks[i].chunk_id) {
201 case AMDGPU_CHUNK_ID_IB:
202 ++num_ibs;
203 break;
204
205 case AMDGPU_CHUNK_ID_FENCE:
206 size = sizeof(struct drm_amdgpu_cs_chunk_fence);
207 if (p->chunks[i].length_dw * sizeof(uint32_t) < size) {
208 ret = -EINVAL;
209 goto free_partial_kdata;
210 }
211
212 ret = amdgpu_cs_user_fence_chunk(p, p->chunks[i].kdata,
213 &uf_offset);
214 if (ret)
215 goto free_partial_kdata;
216
217 break;
218
219 case AMDGPU_CHUNK_ID_DEPENDENCIES:
220 break;
221
222 default:
223 ret = -EINVAL;
224 goto free_partial_kdata;
225 }
226 }
227
228 ret = amdgpu_job_alloc(p->adev, num_ibs, &p->job, vm);
229 if (ret)
230 goto free_all_kdata;
231
232 if (p->uf_entry.robj)
233 p->job->uf_addr = uf_offset;
234 kfree(chunk_array);
235 return 0;
236
237free_all_kdata:
238 i = p->nchunks - 1;
239free_partial_kdata:
240 for (; i >= 0; i--)
241 drm_free_large(p->chunks[i].kdata);
242 kfree(p->chunks);
243put_ctx:
244 amdgpu_ctx_put(p->ctx);
245free_chunk:
246 kfree(chunk_array);
247
248 return ret;
249}
250
251/* Convert microseconds to bytes. */
252static u64 us_to_bytes(struct amdgpu_device *adev, s64 us)
253{
254 if (us <= 0 || !adev->mm_stats.log2_max_MBps)
255 return 0;
256
257 /* Since accum_us is incremented by a million per second, just
258 * multiply it by the number of MB/s to get the number of bytes.
259 */
260 return us << adev->mm_stats.log2_max_MBps;
261}
262
263static s64 bytes_to_us(struct amdgpu_device *adev, u64 bytes)
264{
265 if (!adev->mm_stats.log2_max_MBps)
266 return 0;
267
268 return bytes >> adev->mm_stats.log2_max_MBps;
269}
270
271/* Returns how many bytes TTM can move right now. If no bytes can be moved,
272 * it returns 0. If it returns non-zero, it's OK to move at least one buffer,
273 * which means it can go over the threshold once. If that happens, the driver
274 * will be in debt and no other buffer migrations can be done until that debt
275 * is repaid.
276 *
277 * This approach allows moving a buffer of any size (it's important to allow
278 * that).
279 *
280 * The currency is simply time in microseconds and it increases as the clock
281 * ticks. The accumulated microseconds (us) are converted to bytes and
282 * returned.
283 */
284static u64 amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev)
285{
286 s64 time_us, increment_us;
287 u64 max_bytes;
288 u64 free_vram, total_vram, used_vram;
289
290 /* Allow a maximum of 200 accumulated ms. This is basically per-IB
291 * throttling.
292 *
293 * It means that in order to get full max MBps, at least 5 IBs per
294 * second must be submitted and not more than 200ms apart from each
295 * other.
296 */
297 const s64 us_upper_bound = 200000;
298
299 if (!adev->mm_stats.log2_max_MBps)
300 return 0;
301
302 total_vram = adev->mc.real_vram_size - adev->vram_pin_size;
303 used_vram = atomic64_read(&adev->vram_usage);
304 free_vram = used_vram >= total_vram ? 0 : total_vram - used_vram;
305
306 spin_lock(&adev->mm_stats.lock);
307
308 /* Increase the amount of accumulated us. */
309 time_us = ktime_to_us(ktime_get());
310 increment_us = time_us - adev->mm_stats.last_update_us;
311 adev->mm_stats.last_update_us = time_us;
312 adev->mm_stats.accum_us = min(adev->mm_stats.accum_us + increment_us,
313 us_upper_bound);
314
315 /* This prevents the short period of low performance when the VRAM
316 * usage is low and the driver is in debt or doesn't have enough
317 * accumulated us to fill VRAM quickly.
318 *
319 * The situation can occur in these cases:
320 * - a lot of VRAM is freed by userspace
321 * - the presence of a big buffer causes a lot of evictions
322 * (solution: split buffers into smaller ones)
323 *
324 * If 128 MB or 1/8th of VRAM is free, start filling it now by setting
325 * accum_us to a positive number.
326 */
327 if (free_vram >= 128 * 1024 * 1024 || free_vram >= total_vram / 8) {
328 s64 min_us;
329
330 /* Be more aggresive on dGPUs. Try to fill a portion of free
331 * VRAM now.
332 */
333 if (!(adev->flags & AMD_IS_APU))
334 min_us = bytes_to_us(adev, free_vram / 4);
335 else
336 min_us = 0; /* Reset accum_us on APUs. */
337
338 adev->mm_stats.accum_us = max(min_us, adev->mm_stats.accum_us);
339 }
340
341 /* This returns 0 if the driver is in debt to disallow (optional)
342 * buffer moves.
343 */
344 max_bytes = us_to_bytes(adev, adev->mm_stats.accum_us);
345
346 spin_unlock(&adev->mm_stats.lock);
347 return max_bytes;
348}
349
350/* Report how many bytes have really been moved for the last command
351 * submission. This can result in a debt that can stop buffer migrations
352 * temporarily.
353 */
354static void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev,
355 u64 num_bytes)
356{
357 spin_lock(&adev->mm_stats.lock);
358 adev->mm_stats.accum_us -= bytes_to_us(adev, num_bytes);
359 spin_unlock(&adev->mm_stats.lock);
360}
361
362static int amdgpu_cs_bo_validate(struct amdgpu_cs_parser *p,
363 struct amdgpu_bo *bo)
364{
365 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
366 u64 initial_bytes_moved;
367 uint32_t domain;
368 int r;
369
370 if (bo->pin_count)
371 return 0;
372
373 /* Don't move this buffer if we have depleted our allowance
374 * to move it. Don't move anything if the threshold is zero.
375 */
376 if (p->bytes_moved < p->bytes_moved_threshold)
377 domain = bo->prefered_domains;
378 else
379 domain = bo->allowed_domains;
380
381retry:
382 amdgpu_ttm_placement_from_domain(bo, domain);
383 initial_bytes_moved = atomic64_read(&adev->num_bytes_moved);
384 r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
385 p->bytes_moved += atomic64_read(&adev->num_bytes_moved) -
386 initial_bytes_moved;
387
388 if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
389 domain = bo->allowed_domains;
390 goto retry;
391 }
392
393 return r;
394}
395
396/* Last resort, try to evict something from the current working set */
397static bool amdgpu_cs_try_evict(struct amdgpu_cs_parser *p,
398 struct amdgpu_bo *validated)
399{
400 uint32_t domain = validated->allowed_domains;
401 int r;
402
403 if (!p->evictable)
404 return false;
405
406 for (;&p->evictable->tv.head != &p->validated;
407 p->evictable = list_prev_entry(p->evictable, tv.head)) {
408
409 struct amdgpu_bo_list_entry *candidate = p->evictable;
410 struct amdgpu_bo *bo = candidate->robj;
411 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
412 u64 initial_bytes_moved;
413 uint32_t other;
414
415 /* If we reached our current BO we can forget it */
416 if (candidate->robj == validated)
417 break;
418
419 other = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
420
421 /* Check if this BO is in one of the domains we need space for */
422 if (!(other & domain))
423 continue;
424
425 /* Check if we can move this BO somewhere else */
426 other = bo->allowed_domains & ~domain;
427 if (!other)
428 continue;
429
430 /* Good we can try to move this BO somewhere else */
431 amdgpu_ttm_placement_from_domain(bo, other);
432 initial_bytes_moved = atomic64_read(&adev->num_bytes_moved);
433 r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
434 p->bytes_moved += atomic64_read(&adev->num_bytes_moved) -
435 initial_bytes_moved;
436
437 if (unlikely(r))
438 break;
439
440 p->evictable = list_prev_entry(p->evictable, tv.head);
441 list_move(&candidate->tv.head, &p->validated);
442
443 return true;
444 }
445
446 return false;
447}
448
449static int amdgpu_cs_validate(void *param, struct amdgpu_bo *bo)
450{
451 struct amdgpu_cs_parser *p = param;
452 int r;
453
454 do {
455 r = amdgpu_cs_bo_validate(p, bo);
456 } while (r == -ENOMEM && amdgpu_cs_try_evict(p, bo));
457 if (r)
458 return r;
459
460 if (bo->shadow)
461 r = amdgpu_cs_bo_validate(p, bo->shadow);
462
463 return r;
464}
465
466static int amdgpu_cs_list_validate(struct amdgpu_cs_parser *p,
467 struct list_head *validated)
468{
469 struct amdgpu_bo_list_entry *lobj;
470 int r;
471
472 list_for_each_entry(lobj, validated, tv.head) {
473 struct amdgpu_bo *bo = lobj->robj;
474 bool binding_userptr = false;
475 struct mm_struct *usermm;
476
477 usermm = amdgpu_ttm_tt_get_usermm(bo->tbo.ttm);
478 if (usermm && usermm != current->mm)
479 return -EPERM;
480
481 /* Check if we have user pages and nobody bound the BO already */
482 if (lobj->user_pages && bo->tbo.ttm->state != tt_bound) {
483 size_t size = sizeof(struct page *);
484
485 size *= bo->tbo.ttm->num_pages;
486 memcpy(bo->tbo.ttm->pages, lobj->user_pages, size);
487 binding_userptr = true;
488 }
489
490 if (p->evictable == lobj)
491 p->evictable = NULL;
492
493 r = amdgpu_cs_validate(p, bo);
494 if (r)
495 return r;
496
497 if (binding_userptr) {
498 drm_free_large(lobj->user_pages);
499 lobj->user_pages = NULL;
500 }
501 }
502 return 0;
503}
504
505static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p,
506 union drm_amdgpu_cs *cs)
507{
508 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
509 struct amdgpu_bo_list_entry *e;
510 struct list_head duplicates;
511 bool need_mmap_lock = false;
512 unsigned i, tries = 10;
513 int r;
514
515 INIT_LIST_HEAD(&p->validated);
516
517 p->bo_list = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle);
518 if (p->bo_list) {
519 need_mmap_lock = p->bo_list->first_userptr !=
520 p->bo_list->num_entries;
521 amdgpu_bo_list_get_list(p->bo_list, &p->validated);
522 }
523
524 INIT_LIST_HEAD(&duplicates);
525 amdgpu_vm_get_pd_bo(&fpriv->vm, &p->validated, &p->vm_pd);
526
527 if (p->uf_entry.robj)
528 list_add(&p->uf_entry.tv.head, &p->validated);
529
530 if (need_mmap_lock)
531 down_read(¤t->mm->mmap_sem);
532
533 while (1) {
534 struct list_head need_pages;
535 unsigned i;
536
537 r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true,
538 &duplicates);
539 if (unlikely(r != 0)) {
540 if (r != -ERESTARTSYS)
541 DRM_ERROR("ttm_eu_reserve_buffers failed.\n");
542 goto error_free_pages;
543 }
544
545 /* Without a BO list we don't have userptr BOs */
546 if (!p->bo_list)
547 break;
548
549 INIT_LIST_HEAD(&need_pages);
550 for (i = p->bo_list->first_userptr;
551 i < p->bo_list->num_entries; ++i) {
552
553 e = &p->bo_list->array[i];
554
555 if (amdgpu_ttm_tt_userptr_invalidated(e->robj->tbo.ttm,
556 &e->user_invalidated) && e->user_pages) {
557
558 /* We acquired a page array, but somebody
559 * invalidated it. Free it an try again
560 */
561 release_pages(e->user_pages,
562 e->robj->tbo.ttm->num_pages,
563 false);
564 drm_free_large(e->user_pages);
565 e->user_pages = NULL;
566 }
567
568 if (e->robj->tbo.ttm->state != tt_bound &&
569 !e->user_pages) {
570 list_del(&e->tv.head);
571 list_add(&e->tv.head, &need_pages);
572
573 amdgpu_bo_unreserve(e->robj);
574 }
575 }
576
577 if (list_empty(&need_pages))
578 break;
579
580 /* Unreserve everything again. */
581 ttm_eu_backoff_reservation(&p->ticket, &p->validated);
582
583 /* We tried too many times, just abort */
584 if (!--tries) {
585 r = -EDEADLK;
586 DRM_ERROR("deadlock in %s\n", __func__);
587 goto error_free_pages;
588 }
589
590 /* Fill the page arrays for all useptrs. */
591 list_for_each_entry(e, &need_pages, tv.head) {
592 struct ttm_tt *ttm = e->robj->tbo.ttm;
593
594 e->user_pages = drm_calloc_large(ttm->num_pages,
595 sizeof(struct page*));
596 if (!e->user_pages) {
597 r = -ENOMEM;
598 DRM_ERROR("calloc failure in %s\n", __func__);
599 goto error_free_pages;
600 }
601
602 r = amdgpu_ttm_tt_get_user_pages(ttm, e->user_pages);
603 if (r) {
604 DRM_ERROR("amdgpu_ttm_tt_get_user_pages failed.\n");
605 drm_free_large(e->user_pages);
606 e->user_pages = NULL;
607 goto error_free_pages;
608 }
609 }
610
611 /* And try again. */
612 list_splice(&need_pages, &p->validated);
613 }
614
615 p->bytes_moved_threshold = amdgpu_cs_get_threshold_for_moves(p->adev);
616 p->bytes_moved = 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
642 fpriv->vm.last_eviction_counter =
643 atomic64_read(&p->adev->num_evictions);
644
645 if (p->bo_list) {
646 struct amdgpu_bo *gds = p->bo_list->gds_obj;
647 struct amdgpu_bo *gws = p->bo_list->gws_obj;
648 struct amdgpu_bo *oa = p->bo_list->oa_obj;
649 struct amdgpu_vm *vm = &fpriv->vm;
650 unsigned i;
651
652 for (i = 0; i < p->bo_list->num_entries; i++) {
653 struct amdgpu_bo *bo = p->bo_list->array[i].robj;
654
655 p->bo_list->array[i].bo_va = amdgpu_vm_bo_find(vm, bo);
656 }
657
658 if (gds) {
659 p->job->gds_base = amdgpu_bo_gpu_offset(gds);
660 p->job->gds_size = amdgpu_bo_size(gds);
661 }
662 if (gws) {
663 p->job->gws_base = amdgpu_bo_gpu_offset(gws);
664 p->job->gws_size = amdgpu_bo_size(gws);
665 }
666 if (oa) {
667 p->job->oa_base = amdgpu_bo_gpu_offset(oa);
668 p->job->oa_size = amdgpu_bo_size(oa);
669 }
670 }
671
672 if (!r && p->uf_entry.robj) {
673 struct amdgpu_bo *uf = p->uf_entry.robj;
674
675 r = amdgpu_ttm_bind(&uf->tbo, &uf->tbo.mem);
676 p->job->uf_addr += amdgpu_bo_gpu_offset(uf);
677 }
678
679error_validate:
680 if (r) {
681 amdgpu_vm_move_pt_bos_in_lru(p->adev, &fpriv->vm);
682 ttm_eu_backoff_reservation(&p->ticket, &p->validated);
683 }
684
685error_free_pages:
686
687 if (need_mmap_lock)
688 up_read(¤t->mm->mmap_sem);
689
690 if (p->bo_list) {
691 for (i = p->bo_list->first_userptr;
692 i < p->bo_list->num_entries; ++i) {
693 e = &p->bo_list->array[i];
694
695 if (!e->user_pages)
696 continue;
697
698 release_pages(e->user_pages,
699 e->robj->tbo.ttm->num_pages,
700 false);
701 drm_free_large(e->user_pages);
702 }
703 }
704
705 return r;
706}
707
708static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p)
709{
710 struct amdgpu_bo_list_entry *e;
711 int r;
712
713 list_for_each_entry(e, &p->validated, tv.head) {
714 struct reservation_object *resv = e->robj->tbo.resv;
715 r = amdgpu_sync_resv(p->adev, &p->job->sync, resv, p->filp);
716
717 if (r)
718 return r;
719 }
720 return 0;
721}
722
723/**
724 * cs_parser_fini() - clean parser states
725 * @parser: parser structure holding parsing context.
726 * @error: error number
727 *
728 * If error is set than unvalidate buffer, otherwise just free memory
729 * used by parsing context.
730 **/
731static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error, bool backoff)
732{
733 struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
734 unsigned i;
735
736 if (!error) {
737 amdgpu_vm_move_pt_bos_in_lru(parser->adev, &fpriv->vm);
738
739 ttm_eu_fence_buffer_objects(&parser->ticket,
740 &parser->validated,
741 parser->fence);
742 } else if (backoff) {
743 ttm_eu_backoff_reservation(&parser->ticket,
744 &parser->validated);
745 }
746 dma_fence_put(parser->fence);
747
748 if (parser->ctx)
749 amdgpu_ctx_put(parser->ctx);
750 if (parser->bo_list)
751 amdgpu_bo_list_put(parser->bo_list);
752
753 for (i = 0; i < parser->nchunks; i++)
754 drm_free_large(parser->chunks[i].kdata);
755 kfree(parser->chunks);
756 if (parser->job)
757 amdgpu_job_free(parser->job);
758 amdgpu_bo_unref(&parser->uf_entry.robj);
759}
760
761static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p,
762 struct amdgpu_vm *vm)
763{
764 struct amdgpu_device *adev = p->adev;
765 struct amdgpu_bo_va *bo_va;
766 struct amdgpu_bo *bo;
767 int i, r;
768
769 r = amdgpu_vm_update_page_directory(adev, vm);
770 if (r)
771 return r;
772
773 r = amdgpu_sync_fence(adev, &p->job->sync, vm->page_directory_fence);
774 if (r)
775 return r;
776
777 r = amdgpu_vm_clear_freed(adev, vm);
778 if (r)
779 return r;
780
781 if (p->bo_list) {
782 for (i = 0; i < p->bo_list->num_entries; i++) {
783 struct dma_fence *f;
784
785 /* ignore duplicates */
786 bo = p->bo_list->array[i].robj;
787 if (!bo)
788 continue;
789
790 bo_va = p->bo_list->array[i].bo_va;
791 if (bo_va == NULL)
792 continue;
793
794 r = amdgpu_vm_bo_update(adev, bo_va, false);
795 if (r)
796 return r;
797
798 f = bo_va->last_pt_update;
799 r = amdgpu_sync_fence(adev, &p->job->sync, f);
800 if (r)
801 return r;
802 }
803
804 }
805
806 r = amdgpu_vm_clear_invalids(adev, vm, &p->job->sync);
807
808 if (amdgpu_vm_debug && p->bo_list) {
809 /* Invalidate all BOs to test for userspace bugs */
810 for (i = 0; i < p->bo_list->num_entries; i++) {
811 /* ignore duplicates */
812 bo = p->bo_list->array[i].robj;
813 if (!bo)
814 continue;
815
816 amdgpu_vm_bo_invalidate(adev, bo);
817 }
818 }
819
820 return r;
821}
822
823static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev,
824 struct amdgpu_cs_parser *p)
825{
826 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
827 struct amdgpu_vm *vm = &fpriv->vm;
828 struct amdgpu_ring *ring = p->job->ring;
829 int i, r;
830
831 /* Only for UVD/VCE VM emulation */
832 if (ring->funcs->parse_cs) {
833 for (i = 0; i < p->job->num_ibs; i++) {
834 r = amdgpu_ring_parse_cs(ring, p, i);
835 if (r)
836 return r;
837 }
838 }
839
840 if (p->job->vm) {
841 p->job->vm_pd_addr = amdgpu_bo_gpu_offset(vm->page_directory);
842
843 r = amdgpu_bo_vm_update_pte(p, vm);
844 if (r)
845 return r;
846 }
847
848 return amdgpu_cs_sync_rings(p);
849}
850
851static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
852 struct amdgpu_cs_parser *parser)
853{
854 struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
855 struct amdgpu_vm *vm = &fpriv->vm;
856 int i, j;
857 int r;
858
859 for (i = 0, j = 0; i < parser->nchunks && j < parser->job->num_ibs; i++) {
860 struct amdgpu_cs_chunk *chunk;
861 struct amdgpu_ib *ib;
862 struct drm_amdgpu_cs_chunk_ib *chunk_ib;
863 struct amdgpu_ring *ring;
864
865 chunk = &parser->chunks[i];
866 ib = &parser->job->ibs[j];
867 chunk_ib = (struct drm_amdgpu_cs_chunk_ib *)chunk->kdata;
868
869 if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
870 continue;
871
872 r = amdgpu_cs_get_ring(adev, chunk_ib->ip_type,
873 chunk_ib->ip_instance, chunk_ib->ring,
874 &ring);
875 if (r)
876 return r;
877
878 if (ib->flags & AMDGPU_IB_FLAG_PREAMBLE) {
879 parser->job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT;
880 if (!parser->ctx->preamble_presented) {
881 parser->job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT_FIRST;
882 parser->ctx->preamble_presented = true;
883 }
884 }
885
886 if (parser->job->ring && parser->job->ring != ring)
887 return -EINVAL;
888
889 parser->job->ring = ring;
890
891 if (ring->funcs->parse_cs) {
892 struct amdgpu_bo_va_mapping *m;
893 struct amdgpu_bo *aobj = NULL;
894 uint64_t offset;
895 uint8_t *kptr;
896
897 m = amdgpu_cs_find_mapping(parser, chunk_ib->va_start,
898 &aobj);
899 if (!aobj) {
900 DRM_ERROR("IB va_start is invalid\n");
901 return -EINVAL;
902 }
903
904 if ((chunk_ib->va_start + chunk_ib->ib_bytes) >
905 (m->it.last + 1) * AMDGPU_GPU_PAGE_SIZE) {
906 DRM_ERROR("IB va_start+ib_bytes is invalid\n");
907 return -EINVAL;
908 }
909
910 /* the IB should be reserved at this point */
911 r = amdgpu_bo_kmap(aobj, (void **)&kptr);
912 if (r) {
913 return r;
914 }
915
916 offset = ((uint64_t)m->it.start) * AMDGPU_GPU_PAGE_SIZE;
917 kptr += chunk_ib->va_start - offset;
918
919 r = amdgpu_ib_get(adev, vm, chunk_ib->ib_bytes, ib);
920 if (r) {
921 DRM_ERROR("Failed to get ib !\n");
922 return r;
923 }
924
925 memcpy(ib->ptr, kptr, chunk_ib->ib_bytes);
926 amdgpu_bo_kunmap(aobj);
927 } else {
928 r = amdgpu_ib_get(adev, vm, 0, ib);
929 if (r) {
930 DRM_ERROR("Failed to get ib !\n");
931 return r;
932 }
933
934 }
935
936 ib->gpu_addr = chunk_ib->va_start;
937 ib->length_dw = chunk_ib->ib_bytes / 4;
938 ib->flags = chunk_ib->flags;
939 j++;
940 }
941
942 /* UVD & VCE fw doesn't support user fences */
943 if (parser->job->uf_addr && (
944 parser->job->ring->funcs->type == AMDGPU_RING_TYPE_UVD ||
945 parser->job->ring->funcs->type == AMDGPU_RING_TYPE_VCE))
946 return -EINVAL;
947
948 return 0;
949}
950
951static int amdgpu_cs_dependencies(struct amdgpu_device *adev,
952 struct amdgpu_cs_parser *p)
953{
954 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
955 int i, j, r;
956
957 for (i = 0; i < p->nchunks; ++i) {
958 struct drm_amdgpu_cs_chunk_dep *deps;
959 struct amdgpu_cs_chunk *chunk;
960 unsigned num_deps;
961
962 chunk = &p->chunks[i];
963
964 if (chunk->chunk_id != AMDGPU_CHUNK_ID_DEPENDENCIES)
965 continue;
966
967 deps = (struct drm_amdgpu_cs_chunk_dep *)chunk->kdata;
968 num_deps = chunk->length_dw * 4 /
969 sizeof(struct drm_amdgpu_cs_chunk_dep);
970
971 for (j = 0; j < num_deps; ++j) {
972 struct amdgpu_ring *ring;
973 struct amdgpu_ctx *ctx;
974 struct dma_fence *fence;
975
976 r = amdgpu_cs_get_ring(adev, deps[j].ip_type,
977 deps[j].ip_instance,
978 deps[j].ring, &ring);
979 if (r)
980 return r;
981
982 ctx = amdgpu_ctx_get(fpriv, deps[j].ctx_id);
983 if (ctx == NULL)
984 return -EINVAL;
985
986 fence = amdgpu_ctx_get_fence(ctx, ring,
987 deps[j].handle);
988 if (IS_ERR(fence)) {
989 r = PTR_ERR(fence);
990 amdgpu_ctx_put(ctx);
991 return r;
992
993 } else if (fence) {
994 r = amdgpu_sync_fence(adev, &p->job->sync,
995 fence);
996 dma_fence_put(fence);
997 amdgpu_ctx_put(ctx);
998 if (r)
999 return r;
1000 }
1001 }
1002 }
1003
1004 return 0;
1005}
1006
1007static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
1008 union drm_amdgpu_cs *cs)
1009{
1010 struct amdgpu_ring *ring = p->job->ring;
1011 struct amd_sched_entity *entity = &p->ctx->rings[ring->idx].entity;
1012 struct amdgpu_job *job;
1013 int r;
1014
1015 job = p->job;
1016 p->job = NULL;
1017
1018 r = amd_sched_job_init(&job->base, &ring->sched, entity, p->filp);
1019 if (r) {
1020 amdgpu_job_free(job);
1021 return r;
1022 }
1023
1024 job->owner = p->filp;
1025 job->fence_ctx = entity->fence_context;
1026 p->fence = dma_fence_get(&job->base.s_fence->finished);
1027 cs->out.handle = amdgpu_ctx_add_fence(p->ctx, ring, p->fence);
1028 job->uf_sequence = cs->out.handle;
1029 amdgpu_job_free_resources(job);
1030
1031 trace_amdgpu_cs_ioctl(job);
1032 amd_sched_entity_push_job(&job->base);
1033
1034 return 0;
1035}
1036
1037int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
1038{
1039 struct amdgpu_device *adev = dev->dev_private;
1040 union drm_amdgpu_cs *cs = data;
1041 struct amdgpu_cs_parser parser = {};
1042 bool reserved_buffers = false;
1043 int i, r;
1044
1045 if (!adev->accel_working)
1046 return -EBUSY;
1047
1048 parser.adev = adev;
1049 parser.filp = filp;
1050
1051 r = amdgpu_cs_parser_init(&parser, data);
1052 if (r) {
1053 DRM_ERROR("Failed to initialize parser !\n");
1054 goto out;
1055 }
1056
1057 r = amdgpu_cs_parser_bos(&parser, data);
1058 if (r) {
1059 if (r == -ENOMEM)
1060 DRM_ERROR("Not enough memory for command submission!\n");
1061 else if (r != -ERESTARTSYS)
1062 DRM_ERROR("Failed to process the buffer list %d!\n", r);
1063 goto out;
1064 }
1065
1066 reserved_buffers = true;
1067 r = amdgpu_cs_ib_fill(adev, &parser);
1068 if (r)
1069 goto out;
1070
1071 r = amdgpu_cs_dependencies(adev, &parser);
1072 if (r) {
1073 DRM_ERROR("Failed in the dependencies handling %d!\n", r);
1074 goto out;
1075 }
1076
1077 for (i = 0; i < parser.job->num_ibs; i++)
1078 trace_amdgpu_cs(&parser, i);
1079
1080 r = amdgpu_cs_ib_vm_chunk(adev, &parser);
1081 if (r)
1082 goto out;
1083
1084 r = amdgpu_cs_submit(&parser, cs);
1085
1086out:
1087 amdgpu_cs_parser_fini(&parser, r, reserved_buffers);
1088 return r;
1089}
1090
1091/**
1092 * amdgpu_cs_wait_ioctl - wait for a command submission to finish
1093 *
1094 * @dev: drm device
1095 * @data: data from userspace
1096 * @filp: file private
1097 *
1098 * Wait for the command submission identified by handle to finish.
1099 */
1100int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data,
1101 struct drm_file *filp)
1102{
1103 union drm_amdgpu_wait_cs *wait = data;
1104 struct amdgpu_device *adev = dev->dev_private;
1105 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout);
1106 struct amdgpu_ring *ring = NULL;
1107 struct amdgpu_ctx *ctx;
1108 struct dma_fence *fence;
1109 long r;
1110
1111 r = amdgpu_cs_get_ring(adev, wait->in.ip_type, wait->in.ip_instance,
1112 wait->in.ring, &ring);
1113 if (r)
1114 return r;
1115
1116 ctx = amdgpu_ctx_get(filp->driver_priv, wait->in.ctx_id);
1117 if (ctx == NULL)
1118 return -EINVAL;
1119
1120 fence = amdgpu_ctx_get_fence(ctx, ring, wait->in.handle);
1121 if (IS_ERR(fence))
1122 r = PTR_ERR(fence);
1123 else if (fence) {
1124 r = dma_fence_wait_timeout(fence, true, timeout);
1125 dma_fence_put(fence);
1126 } else
1127 r = 1;
1128
1129 amdgpu_ctx_put(ctx);
1130 if (r < 0)
1131 return r;
1132
1133 memset(wait, 0, sizeof(*wait));
1134 wait->out.status = (r == 0);
1135
1136 return 0;
1137}
1138
1139/**
1140 * amdgpu_cs_get_fence - helper to get fence from drm_amdgpu_fence
1141 *
1142 * @adev: amdgpu device
1143 * @filp: file private
1144 * @user: drm_amdgpu_fence copied from user space
1145 */
1146static struct dma_fence *amdgpu_cs_get_fence(struct amdgpu_device *adev,
1147 struct drm_file *filp,
1148 struct drm_amdgpu_fence *user)
1149{
1150 struct amdgpu_ring *ring;
1151 struct amdgpu_ctx *ctx;
1152 struct dma_fence *fence;
1153 int r;
1154
1155 r = amdgpu_cs_get_ring(adev, user->ip_type, user->ip_instance,
1156 user->ring, &ring);
1157 if (r)
1158 return ERR_PTR(r);
1159
1160 ctx = amdgpu_ctx_get(filp->driver_priv, user->ctx_id);
1161 if (ctx == NULL)
1162 return ERR_PTR(-EINVAL);
1163
1164 fence = amdgpu_ctx_get_fence(ctx, ring, user->seq_no);
1165 amdgpu_ctx_put(ctx);
1166
1167 return fence;
1168}
1169
1170/**
1171 * amdgpu_cs_wait_all_fence - wait on all fences to signal
1172 *
1173 * @adev: amdgpu device
1174 * @filp: file private
1175 * @wait: wait parameters
1176 * @fences: array of drm_amdgpu_fence
1177 */
1178static int amdgpu_cs_wait_all_fences(struct amdgpu_device *adev,
1179 struct drm_file *filp,
1180 union drm_amdgpu_wait_fences *wait,
1181 struct drm_amdgpu_fence *fences)
1182{
1183 uint32_t fence_count = wait->in.fence_count;
1184 unsigned int i;
1185 long r = 1;
1186
1187 for (i = 0; i < fence_count; i++) {
1188 struct dma_fence *fence;
1189 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1190
1191 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1192 if (IS_ERR(fence))
1193 return PTR_ERR(fence);
1194 else if (!fence)
1195 continue;
1196
1197 r = dma_fence_wait_timeout(fence, true, timeout);
1198 if (r < 0)
1199 return r;
1200
1201 if (r == 0)
1202 break;
1203 }
1204
1205 memset(wait, 0, sizeof(*wait));
1206 wait->out.status = (r > 0);
1207
1208 return 0;
1209}
1210
1211/**
1212 * amdgpu_cs_wait_any_fence - wait on any fence to signal
1213 *
1214 * @adev: amdgpu device
1215 * @filp: file private
1216 * @wait: wait parameters
1217 * @fences: array of drm_amdgpu_fence
1218 */
1219static int amdgpu_cs_wait_any_fence(struct amdgpu_device *adev,
1220 struct drm_file *filp,
1221 union drm_amdgpu_wait_fences *wait,
1222 struct drm_amdgpu_fence *fences)
1223{
1224 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1225 uint32_t fence_count = wait->in.fence_count;
1226 uint32_t first = ~0;
1227 struct dma_fence **array;
1228 unsigned int i;
1229 long r;
1230
1231 /* Prepare the fence array */
1232 array = kcalloc(fence_count, sizeof(struct dma_fence *), GFP_KERNEL);
1233
1234 if (array == NULL)
1235 return -ENOMEM;
1236
1237 for (i = 0; i < fence_count; i++) {
1238 struct dma_fence *fence;
1239
1240 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1241 if (IS_ERR(fence)) {
1242 r = PTR_ERR(fence);
1243 goto err_free_fence_array;
1244 } else if (fence) {
1245 array[i] = fence;
1246 } else { /* NULL, the fence has been already signaled */
1247 r = 1;
1248 goto out;
1249 }
1250 }
1251
1252 r = dma_fence_wait_any_timeout(array, fence_count, true, timeout,
1253 &first);
1254 if (r < 0)
1255 goto err_free_fence_array;
1256
1257out:
1258 memset(wait, 0, sizeof(*wait));
1259 wait->out.status = (r > 0);
1260 wait->out.first_signaled = first;
1261 /* set return value 0 to indicate success */
1262 r = 0;
1263
1264err_free_fence_array:
1265 for (i = 0; i < fence_count; i++)
1266 dma_fence_put(array[i]);
1267 kfree(array);
1268
1269 return r;
1270}
1271
1272/**
1273 * amdgpu_cs_wait_fences_ioctl - wait for multiple command submissions to finish
1274 *
1275 * @dev: drm device
1276 * @data: data from userspace
1277 * @filp: file private
1278 */
1279int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data,
1280 struct drm_file *filp)
1281{
1282 struct amdgpu_device *adev = dev->dev_private;
1283 union drm_amdgpu_wait_fences *wait = data;
1284 uint32_t fence_count = wait->in.fence_count;
1285 struct drm_amdgpu_fence *fences_user;
1286 struct drm_amdgpu_fence *fences;
1287 int r;
1288
1289 /* Get the fences from userspace */
1290 fences = kmalloc_array(fence_count, sizeof(struct drm_amdgpu_fence),
1291 GFP_KERNEL);
1292 if (fences == NULL)
1293 return -ENOMEM;
1294
1295 fences_user = (void __user *)(unsigned long)(wait->in.fences);
1296 if (copy_from_user(fences, fences_user,
1297 sizeof(struct drm_amdgpu_fence) * fence_count)) {
1298 r = -EFAULT;
1299 goto err_free_fences;
1300 }
1301
1302 if (wait->in.wait_all)
1303 r = amdgpu_cs_wait_all_fences(adev, filp, wait, fences);
1304 else
1305 r = amdgpu_cs_wait_any_fence(adev, filp, wait, fences);
1306
1307err_free_fences:
1308 kfree(fences);
1309
1310 return r;
1311}
1312
1313/**
1314 * amdgpu_cs_find_bo_va - find bo_va for VM address
1315 *
1316 * @parser: command submission parser context
1317 * @addr: VM address
1318 * @bo: resulting BO of the mapping found
1319 *
1320 * Search the buffer objects in the command submission context for a certain
1321 * virtual memory address. Returns allocation structure when found, NULL
1322 * otherwise.
1323 */
1324struct amdgpu_bo_va_mapping *
1325amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
1326 uint64_t addr, struct amdgpu_bo **bo)
1327{
1328 struct amdgpu_bo_va_mapping *mapping;
1329 unsigned i;
1330
1331 if (!parser->bo_list)
1332 return NULL;
1333
1334 addr /= AMDGPU_GPU_PAGE_SIZE;
1335
1336 for (i = 0; i < parser->bo_list->num_entries; i++) {
1337 struct amdgpu_bo_list_entry *lobj;
1338
1339 lobj = &parser->bo_list->array[i];
1340 if (!lobj->bo_va)
1341 continue;
1342
1343 list_for_each_entry(mapping, &lobj->bo_va->valids, list) {
1344 if (mapping->it.start > addr ||
1345 addr > mapping->it.last)
1346 continue;
1347
1348 *bo = lobj->bo_va->bo;
1349 return mapping;
1350 }
1351
1352 list_for_each_entry(mapping, &lobj->bo_va->invalids, list) {
1353 if (mapping->it.start > addr ||
1354 addr > mapping->it.last)
1355 continue;
1356
1357 *bo = lobj->bo_va->bo;
1358 return mapping;
1359 }
1360 }
1361
1362 return NULL;
1363}
1364
1365/**
1366 * amdgpu_cs_sysvm_access_required - make BOs accessible by the system VM
1367 *
1368 * @parser: command submission parser context
1369 *
1370 * Helper for UVD/VCE VM emulation, make sure BOs are accessible by the system VM.
1371 */
1372int amdgpu_cs_sysvm_access_required(struct amdgpu_cs_parser *parser)
1373{
1374 unsigned i;
1375 int r;
1376
1377 if (!parser->bo_list)
1378 return 0;
1379
1380 for (i = 0; i < parser->bo_list->num_entries; i++) {
1381 struct amdgpu_bo *bo = parser->bo_list->array[i].robj;
1382
1383 r = amdgpu_ttm_bind(&bo->tbo, &bo->tbo.mem);
1384 if (unlikely(r))
1385 return r;
1386
1387 if (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
1388 continue;
1389
1390 bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
1391 amdgpu_ttm_placement_from_domain(bo, bo->allowed_domains);
1392 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
1393 if (unlikely(r))
1394 return r;
1395 }
1396
1397 return 0;
1398}