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 <linux/sync_file.h>
29 #include <drm/drmP.h>
30 #include <drm/amdgpu_drm.h>
31 #include <drm/drm_syncobj.h>
32 #include "amdgpu.h"
33 #include "amdgpu_trace.h"
34 #include "amdgpu_gmc.h"
35
amdgpu_cs_user_fence_chunk(struct amdgpu_cs_parser * p,struct drm_amdgpu_cs_chunk_fence * data,uint32_t * offset)36 static int amdgpu_cs_user_fence_chunk(struct amdgpu_cs_parser *p,
37 struct drm_amdgpu_cs_chunk_fence *data,
38 uint32_t *offset)
39 {
40 struct drm_gem_object *gobj;
41 unsigned long size;
42 int r;
43
44 gobj = drm_gem_object_lookup(p->filp, data->handle);
45 if (gobj == NULL)
46 return -EINVAL;
47
48 p->uf_entry.robj = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj));
49 p->uf_entry.priority = 0;
50 p->uf_entry.tv.bo = &p->uf_entry.robj->tbo;
51 p->uf_entry.tv.shared = true;
52 p->uf_entry.user_pages = NULL;
53
54 drm_gem_object_put_unlocked(gobj);
55
56 size = amdgpu_bo_size(p->uf_entry.robj);
57 if (size != PAGE_SIZE || (data->offset + 8) > size) {
58 r = -EINVAL;
59 goto error_unref;
60 }
61
62 if (amdgpu_ttm_tt_get_usermm(p->uf_entry.robj->tbo.ttm)) {
63 r = -EINVAL;
64 goto error_unref;
65 }
66
67 *offset = data->offset;
68
69 return 0;
70
71 error_unref:
72 amdgpu_bo_unref(&p->uf_entry.robj);
73 return r;
74 }
75
amdgpu_cs_bo_handles_chunk(struct amdgpu_cs_parser * p,struct drm_amdgpu_bo_list_in * data)76 static int amdgpu_cs_bo_handles_chunk(struct amdgpu_cs_parser *p,
77 struct drm_amdgpu_bo_list_in *data)
78 {
79 int r;
80 struct drm_amdgpu_bo_list_entry *info = NULL;
81
82 r = amdgpu_bo_create_list_entry_array(data, &info);
83 if (r)
84 return r;
85
86 r = amdgpu_bo_list_create(p->adev, p->filp, info, data->bo_number,
87 &p->bo_list);
88 if (r)
89 goto error_free;
90
91 kvfree(info);
92 return 0;
93
94 error_free:
95 if (info)
96 kvfree(info);
97
98 return r;
99 }
100
amdgpu_cs_parser_init(struct amdgpu_cs_parser * p,union drm_amdgpu_cs * cs)101 static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, union drm_amdgpu_cs *cs)
102 {
103 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
104 struct amdgpu_vm *vm = &fpriv->vm;
105 uint64_t *chunk_array_user;
106 uint64_t *chunk_array;
107 unsigned size, num_ibs = 0;
108 uint32_t uf_offset = 0;
109 int i;
110 int ret;
111
112 if (cs->in.num_chunks == 0)
113 return 0;
114
115 chunk_array = kmalloc_array(cs->in.num_chunks, sizeof(uint64_t), GFP_KERNEL);
116 if (!chunk_array)
117 return -ENOMEM;
118
119 p->ctx = amdgpu_ctx_get(fpriv, cs->in.ctx_id);
120 if (!p->ctx) {
121 ret = -EINVAL;
122 goto free_chunk;
123 }
124
125 /* skip guilty context job */
126 if (atomic_read(&p->ctx->guilty) == 1) {
127 ret = -ECANCELED;
128 goto free_chunk;
129 }
130
131 mutex_lock(&p->ctx->lock);
132
133 /* get chunks */
134 chunk_array_user = u64_to_user_ptr(cs->in.chunks);
135 if (copy_from_user(chunk_array, chunk_array_user,
136 sizeof(uint64_t)*cs->in.num_chunks)) {
137 ret = -EFAULT;
138 goto free_chunk;
139 }
140
141 p->nchunks = cs->in.num_chunks;
142 p->chunks = kmalloc_array(p->nchunks, sizeof(struct amdgpu_cs_chunk),
143 GFP_KERNEL);
144 if (!p->chunks) {
145 ret = -ENOMEM;
146 goto free_chunk;
147 }
148
149 for (i = 0; i < p->nchunks; i++) {
150 struct drm_amdgpu_cs_chunk __user **chunk_ptr = NULL;
151 struct drm_amdgpu_cs_chunk user_chunk;
152 uint32_t __user *cdata;
153
154 chunk_ptr = u64_to_user_ptr(chunk_array[i]);
155 if (copy_from_user(&user_chunk, chunk_ptr,
156 sizeof(struct drm_amdgpu_cs_chunk))) {
157 ret = -EFAULT;
158 i--;
159 goto free_partial_kdata;
160 }
161 p->chunks[i].chunk_id = user_chunk.chunk_id;
162 p->chunks[i].length_dw = user_chunk.length_dw;
163
164 size = p->chunks[i].length_dw;
165 cdata = u64_to_user_ptr(user_chunk.chunk_data);
166
167 p->chunks[i].kdata = kvmalloc_array(size, sizeof(uint32_t), GFP_KERNEL);
168 if (p->chunks[i].kdata == NULL) {
169 ret = -ENOMEM;
170 i--;
171 goto free_partial_kdata;
172 }
173 size *= sizeof(uint32_t);
174 if (copy_from_user(p->chunks[i].kdata, cdata, size)) {
175 ret = -EFAULT;
176 goto free_partial_kdata;
177 }
178
179 switch (p->chunks[i].chunk_id) {
180 case AMDGPU_CHUNK_ID_IB:
181 ++num_ibs;
182 break;
183
184 case AMDGPU_CHUNK_ID_FENCE:
185 size = sizeof(struct drm_amdgpu_cs_chunk_fence);
186 if (p->chunks[i].length_dw * sizeof(uint32_t) < size) {
187 ret = -EINVAL;
188 goto free_partial_kdata;
189 }
190
191 ret = amdgpu_cs_user_fence_chunk(p, p->chunks[i].kdata,
192 &uf_offset);
193 if (ret)
194 goto free_partial_kdata;
195
196 break;
197
198 case AMDGPU_CHUNK_ID_BO_HANDLES:
199 size = sizeof(struct drm_amdgpu_bo_list_in);
200 if (p->chunks[i].length_dw * sizeof(uint32_t) < size) {
201 ret = -EINVAL;
202 goto free_partial_kdata;
203 }
204
205 ret = amdgpu_cs_bo_handles_chunk(p, p->chunks[i].kdata);
206 if (ret)
207 goto free_partial_kdata;
208
209 break;
210
211 case AMDGPU_CHUNK_ID_DEPENDENCIES:
212 case AMDGPU_CHUNK_ID_SYNCOBJ_IN:
213 case AMDGPU_CHUNK_ID_SYNCOBJ_OUT:
214 break;
215
216 default:
217 ret = -EINVAL;
218 goto free_partial_kdata;
219 }
220 }
221
222 ret = amdgpu_job_alloc(p->adev, num_ibs, &p->job, vm);
223 if (ret)
224 goto free_all_kdata;
225
226 if (p->ctx->vram_lost_counter != p->job->vram_lost_counter) {
227 ret = -ECANCELED;
228 goto free_all_kdata;
229 }
230
231 if (p->uf_entry.robj)
232 p->job->uf_addr = uf_offset;
233 kfree(chunk_array);
234
235 /* Use this opportunity to fill in task info for the vm */
236 amdgpu_vm_set_task_info(vm);
237
238 return 0;
239
240 free_all_kdata:
241 i = p->nchunks - 1;
242 free_partial_kdata:
243 for (; i >= 0; i--)
244 kvfree(p->chunks[i].kdata);
245 kfree(p->chunks);
246 p->chunks = NULL;
247 p->nchunks = 0;
248 free_chunk:
249 kfree(chunk_array);
250
251 return ret;
252 }
253
254 /* Convert microseconds to bytes. */
us_to_bytes(struct amdgpu_device * adev,s64 us)255 static u64 us_to_bytes(struct amdgpu_device *adev, s64 us)
256 {
257 if (us <= 0 || !adev->mm_stats.log2_max_MBps)
258 return 0;
259
260 /* Since accum_us is incremented by a million per second, just
261 * multiply it by the number of MB/s to get the number of bytes.
262 */
263 return us << adev->mm_stats.log2_max_MBps;
264 }
265
bytes_to_us(struct amdgpu_device * adev,u64 bytes)266 static s64 bytes_to_us(struct amdgpu_device *adev, u64 bytes)
267 {
268 if (!adev->mm_stats.log2_max_MBps)
269 return 0;
270
271 return bytes >> adev->mm_stats.log2_max_MBps;
272 }
273
274 /* Returns how many bytes TTM can move right now. If no bytes can be moved,
275 * it returns 0. If it returns non-zero, it's OK to move at least one buffer,
276 * which means it can go over the threshold once. If that happens, the driver
277 * will be in debt and no other buffer migrations can be done until that debt
278 * is repaid.
279 *
280 * This approach allows moving a buffer of any size (it's important to allow
281 * that).
282 *
283 * The currency is simply time in microseconds and it increases as the clock
284 * ticks. The accumulated microseconds (us) are converted to bytes and
285 * returned.
286 */
amdgpu_cs_get_threshold_for_moves(struct amdgpu_device * adev,u64 * max_bytes,u64 * max_vis_bytes)287 static void amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev,
288 u64 *max_bytes,
289 u64 *max_vis_bytes)
290 {
291 s64 time_us, increment_us;
292 u64 free_vram, total_vram, used_vram;
293
294 /* Allow a maximum of 200 accumulated ms. This is basically per-IB
295 * throttling.
296 *
297 * It means that in order to get full max MBps, at least 5 IBs per
298 * second must be submitted and not more than 200ms apart from each
299 * other.
300 */
301 const s64 us_upper_bound = 200000;
302
303 if (!adev->mm_stats.log2_max_MBps) {
304 *max_bytes = 0;
305 *max_vis_bytes = 0;
306 return;
307 }
308
309 total_vram = adev->gmc.real_vram_size - atomic64_read(&adev->vram_pin_size);
310 used_vram = amdgpu_vram_mgr_usage(&adev->mman.bdev.man[TTM_PL_VRAM]);
311 free_vram = used_vram >= total_vram ? 0 : total_vram - used_vram;
312
313 spin_lock(&adev->mm_stats.lock);
314
315 /* Increase the amount of accumulated us. */
316 time_us = ktime_to_us(ktime_get());
317 increment_us = time_us - adev->mm_stats.last_update_us;
318 adev->mm_stats.last_update_us = time_us;
319 adev->mm_stats.accum_us = min(adev->mm_stats.accum_us + increment_us,
320 us_upper_bound);
321
322 /* This prevents the short period of low performance when the VRAM
323 * usage is low and the driver is in debt or doesn't have enough
324 * accumulated us to fill VRAM quickly.
325 *
326 * The situation can occur in these cases:
327 * - a lot of VRAM is freed by userspace
328 * - the presence of a big buffer causes a lot of evictions
329 * (solution: split buffers into smaller ones)
330 *
331 * If 128 MB or 1/8th of VRAM is free, start filling it now by setting
332 * accum_us to a positive number.
333 */
334 if (free_vram >= 128 * 1024 * 1024 || free_vram >= total_vram / 8) {
335 s64 min_us;
336
337 /* Be more aggresive on dGPUs. Try to fill a portion of free
338 * VRAM now.
339 */
340 if (!(adev->flags & AMD_IS_APU))
341 min_us = bytes_to_us(adev, free_vram / 4);
342 else
343 min_us = 0; /* Reset accum_us on APUs. */
344
345 adev->mm_stats.accum_us = max(min_us, adev->mm_stats.accum_us);
346 }
347
348 /* This is set to 0 if the driver is in debt to disallow (optional)
349 * buffer moves.
350 */
351 *max_bytes = us_to_bytes(adev, adev->mm_stats.accum_us);
352
353 /* Do the same for visible VRAM if half of it is free */
354 if (!amdgpu_gmc_vram_full_visible(&adev->gmc)) {
355 u64 total_vis_vram = adev->gmc.visible_vram_size;
356 u64 used_vis_vram =
357 amdgpu_vram_mgr_vis_usage(&adev->mman.bdev.man[TTM_PL_VRAM]);
358
359 if (used_vis_vram < total_vis_vram) {
360 u64 free_vis_vram = total_vis_vram - used_vis_vram;
361 adev->mm_stats.accum_us_vis = min(adev->mm_stats.accum_us_vis +
362 increment_us, us_upper_bound);
363
364 if (free_vis_vram >= total_vis_vram / 2)
365 adev->mm_stats.accum_us_vis =
366 max(bytes_to_us(adev, free_vis_vram / 2),
367 adev->mm_stats.accum_us_vis);
368 }
369
370 *max_vis_bytes = us_to_bytes(adev, adev->mm_stats.accum_us_vis);
371 } else {
372 *max_vis_bytes = 0;
373 }
374
375 spin_unlock(&adev->mm_stats.lock);
376 }
377
378 /* Report how many bytes have really been moved for the last command
379 * submission. This can result in a debt that can stop buffer migrations
380 * temporarily.
381 */
amdgpu_cs_report_moved_bytes(struct amdgpu_device * adev,u64 num_bytes,u64 num_vis_bytes)382 void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes,
383 u64 num_vis_bytes)
384 {
385 spin_lock(&adev->mm_stats.lock);
386 adev->mm_stats.accum_us -= bytes_to_us(adev, num_bytes);
387 adev->mm_stats.accum_us_vis -= bytes_to_us(adev, num_vis_bytes);
388 spin_unlock(&adev->mm_stats.lock);
389 }
390
amdgpu_cs_bo_validate(struct amdgpu_cs_parser * p,struct amdgpu_bo * bo)391 static int amdgpu_cs_bo_validate(struct amdgpu_cs_parser *p,
392 struct amdgpu_bo *bo)
393 {
394 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
395 struct ttm_operation_ctx ctx = {
396 .interruptible = true,
397 .no_wait_gpu = false,
398 .resv = bo->tbo.resv,
399 .flags = 0
400 };
401 uint32_t domain;
402 int r;
403
404 if (bo->pin_count)
405 return 0;
406
407 /* Don't move this buffer if we have depleted our allowance
408 * to move it. Don't move anything if the threshold is zero.
409 */
410 if (p->bytes_moved < p->bytes_moved_threshold) {
411 if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
412 (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)) {
413 /* And don't move a CPU_ACCESS_REQUIRED BO to limited
414 * visible VRAM if we've depleted our allowance to do
415 * that.
416 */
417 if (p->bytes_moved_vis < p->bytes_moved_vis_threshold)
418 domain = bo->preferred_domains;
419 else
420 domain = bo->allowed_domains;
421 } else {
422 domain = bo->preferred_domains;
423 }
424 } else {
425 domain = bo->allowed_domains;
426 }
427
428 retry:
429 amdgpu_bo_placement_from_domain(bo, domain);
430 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
431
432 p->bytes_moved += ctx.bytes_moved;
433 if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
434 amdgpu_bo_in_cpu_visible_vram(bo))
435 p->bytes_moved_vis += ctx.bytes_moved;
436
437 if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
438 domain = bo->allowed_domains;
439 goto retry;
440 }
441
442 return r;
443 }
444
445 /* Last resort, try to evict something from the current working set */
amdgpu_cs_try_evict(struct amdgpu_cs_parser * p,struct amdgpu_bo * validated)446 static bool amdgpu_cs_try_evict(struct amdgpu_cs_parser *p,
447 struct amdgpu_bo *validated)
448 {
449 uint32_t domain = validated->allowed_domains;
450 struct ttm_operation_ctx ctx = { true, false };
451 int r;
452
453 if (!p->evictable)
454 return false;
455
456 for (;&p->evictable->tv.head != &p->validated;
457 p->evictable = list_prev_entry(p->evictable, tv.head)) {
458
459 struct amdgpu_bo_list_entry *candidate = p->evictable;
460 struct amdgpu_bo *bo = candidate->robj;
461 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
462 bool update_bytes_moved_vis;
463 uint32_t other;
464
465 /* If we reached our current BO we can forget it */
466 if (candidate->robj == validated)
467 break;
468
469 /* We can't move pinned BOs here */
470 if (bo->pin_count)
471 continue;
472
473 other = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
474
475 /* Check if this BO is in one of the domains we need space for */
476 if (!(other & domain))
477 continue;
478
479 /* Check if we can move this BO somewhere else */
480 other = bo->allowed_domains & ~domain;
481 if (!other)
482 continue;
483
484 /* Good we can try to move this BO somewhere else */
485 update_bytes_moved_vis =
486 !amdgpu_gmc_vram_full_visible(&adev->gmc) &&
487 amdgpu_bo_in_cpu_visible_vram(bo);
488 amdgpu_bo_placement_from_domain(bo, other);
489 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
490 p->bytes_moved += ctx.bytes_moved;
491 if (update_bytes_moved_vis)
492 p->bytes_moved_vis += ctx.bytes_moved;
493
494 if (unlikely(r))
495 break;
496
497 p->evictable = list_prev_entry(p->evictable, tv.head);
498 list_move(&candidate->tv.head, &p->validated);
499
500 return true;
501 }
502
503 return false;
504 }
505
amdgpu_cs_validate(void * param,struct amdgpu_bo * bo)506 static int amdgpu_cs_validate(void *param, struct amdgpu_bo *bo)
507 {
508 struct amdgpu_cs_parser *p = param;
509 int r;
510
511 do {
512 r = amdgpu_cs_bo_validate(p, bo);
513 } while (r == -ENOMEM && amdgpu_cs_try_evict(p, bo));
514 if (r)
515 return r;
516
517 if (bo->shadow)
518 r = amdgpu_cs_bo_validate(p, bo->shadow);
519
520 return r;
521 }
522
amdgpu_cs_list_validate(struct amdgpu_cs_parser * p,struct list_head * validated)523 static int amdgpu_cs_list_validate(struct amdgpu_cs_parser *p,
524 struct list_head *validated)
525 {
526 struct ttm_operation_ctx ctx = { true, false };
527 struct amdgpu_bo_list_entry *lobj;
528 int r;
529
530 list_for_each_entry(lobj, validated, tv.head) {
531 struct amdgpu_bo *bo = lobj->robj;
532 bool binding_userptr = false;
533 struct mm_struct *usermm;
534
535 usermm = amdgpu_ttm_tt_get_usermm(bo->tbo.ttm);
536 if (usermm && usermm != current->mm)
537 return -EPERM;
538
539 /* Check if we have user pages and nobody bound the BO already */
540 if (amdgpu_ttm_tt_userptr_needs_pages(bo->tbo.ttm) &&
541 lobj->user_pages) {
542 amdgpu_bo_placement_from_domain(bo,
543 AMDGPU_GEM_DOMAIN_CPU);
544 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
545 if (r)
546 return r;
547 amdgpu_ttm_tt_set_user_pages(bo->tbo.ttm,
548 lobj->user_pages);
549 binding_userptr = true;
550 }
551
552 if (p->evictable == lobj)
553 p->evictable = NULL;
554
555 r = amdgpu_cs_validate(p, bo);
556 if (r)
557 return r;
558
559 if (binding_userptr) {
560 kvfree(lobj->user_pages);
561 lobj->user_pages = NULL;
562 }
563 }
564 return 0;
565 }
566
amdgpu_cs_parser_bos(struct amdgpu_cs_parser * p,union drm_amdgpu_cs * cs)567 static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p,
568 union drm_amdgpu_cs *cs)
569 {
570 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
571 struct amdgpu_vm *vm = &fpriv->vm;
572 struct amdgpu_bo_list_entry *e;
573 struct list_head duplicates;
574 struct amdgpu_bo *gds;
575 struct amdgpu_bo *gws;
576 struct amdgpu_bo *oa;
577 unsigned tries = 10;
578 int r;
579
580 INIT_LIST_HEAD(&p->validated);
581
582 /* p->bo_list could already be assigned if AMDGPU_CHUNK_ID_BO_HANDLES is present */
583 if (cs->in.bo_list_handle) {
584 if (p->bo_list)
585 return -EINVAL;
586
587 r = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle,
588 &p->bo_list);
589 if (r)
590 return r;
591 } else if (!p->bo_list) {
592 /* Create a empty bo_list when no handle is provided */
593 r = amdgpu_bo_list_create(p->adev, p->filp, NULL, 0,
594 &p->bo_list);
595 if (r)
596 return r;
597 }
598
599 amdgpu_bo_list_get_list(p->bo_list, &p->validated);
600 if (p->bo_list->first_userptr != p->bo_list->num_entries)
601 p->mn = amdgpu_mn_get(p->adev, AMDGPU_MN_TYPE_GFX);
602
603 INIT_LIST_HEAD(&duplicates);
604 amdgpu_vm_get_pd_bo(&fpriv->vm, &p->validated, &p->vm_pd);
605
606 if (p->uf_entry.robj && !p->uf_entry.robj->parent)
607 list_add(&p->uf_entry.tv.head, &p->validated);
608
609 while (1) {
610 struct list_head need_pages;
611
612 r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true,
613 &duplicates);
614 if (unlikely(r != 0)) {
615 if (r != -ERESTARTSYS)
616 DRM_ERROR("ttm_eu_reserve_buffers failed.\n");
617 goto error_free_pages;
618 }
619
620 INIT_LIST_HEAD(&need_pages);
621 amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
622 struct amdgpu_bo *bo = e->robj;
623
624 if (amdgpu_ttm_tt_userptr_invalidated(bo->tbo.ttm,
625 &e->user_invalidated) && e->user_pages) {
626
627 /* We acquired a page array, but somebody
628 * invalidated it. Free it and try again
629 */
630 release_pages(e->user_pages,
631 bo->tbo.ttm->num_pages);
632 kvfree(e->user_pages);
633 e->user_pages = NULL;
634 }
635
636 if (amdgpu_ttm_tt_userptr_needs_pages(bo->tbo.ttm) &&
637 !e->user_pages) {
638 list_del(&e->tv.head);
639 list_add(&e->tv.head, &need_pages);
640
641 amdgpu_bo_unreserve(e->robj);
642 }
643 }
644
645 if (list_empty(&need_pages))
646 break;
647
648 /* Unreserve everything again. */
649 ttm_eu_backoff_reservation(&p->ticket, &p->validated);
650
651 /* We tried too many times, just abort */
652 if (!--tries) {
653 r = -EDEADLK;
654 DRM_ERROR("deadlock in %s\n", __func__);
655 goto error_free_pages;
656 }
657
658 /* Fill the page arrays for all userptrs. */
659 list_for_each_entry(e, &need_pages, tv.head) {
660 struct ttm_tt *ttm = e->robj->tbo.ttm;
661
662 e->user_pages = kvmalloc_array(ttm->num_pages,
663 sizeof(struct page*),
664 GFP_KERNEL | __GFP_ZERO);
665 if (!e->user_pages) {
666 r = -ENOMEM;
667 DRM_ERROR("calloc failure in %s\n", __func__);
668 goto error_free_pages;
669 }
670
671 r = amdgpu_ttm_tt_get_user_pages(ttm, e->user_pages);
672 if (r) {
673 DRM_ERROR("amdgpu_ttm_tt_get_user_pages failed.\n");
674 kvfree(e->user_pages);
675 e->user_pages = NULL;
676 goto error_free_pages;
677 }
678 }
679
680 /* And try again. */
681 list_splice(&need_pages, &p->validated);
682 }
683
684 amdgpu_cs_get_threshold_for_moves(p->adev, &p->bytes_moved_threshold,
685 &p->bytes_moved_vis_threshold);
686 p->bytes_moved = 0;
687 p->bytes_moved_vis = 0;
688 p->evictable = list_last_entry(&p->validated,
689 struct amdgpu_bo_list_entry,
690 tv.head);
691
692 r = amdgpu_vm_validate_pt_bos(p->adev, &fpriv->vm,
693 amdgpu_cs_validate, p);
694 if (r) {
695 DRM_ERROR("amdgpu_vm_validate_pt_bos() failed.\n");
696 goto error_validate;
697 }
698
699 r = amdgpu_cs_list_validate(p, &duplicates);
700 if (r) {
701 DRM_ERROR("amdgpu_cs_list_validate(duplicates) failed.\n");
702 goto error_validate;
703 }
704
705 r = amdgpu_cs_list_validate(p, &p->validated);
706 if (r) {
707 DRM_ERROR("amdgpu_cs_list_validate(validated) failed.\n");
708 goto error_validate;
709 }
710
711 amdgpu_cs_report_moved_bytes(p->adev, p->bytes_moved,
712 p->bytes_moved_vis);
713
714 gds = p->bo_list->gds_obj;
715 gws = p->bo_list->gws_obj;
716 oa = p->bo_list->oa_obj;
717
718 amdgpu_bo_list_for_each_entry(e, p->bo_list)
719 e->bo_va = amdgpu_vm_bo_find(vm, e->robj);
720
721 if (gds) {
722 p->job->gds_base = amdgpu_bo_gpu_offset(gds);
723 p->job->gds_size = amdgpu_bo_size(gds);
724 }
725 if (gws) {
726 p->job->gws_base = amdgpu_bo_gpu_offset(gws);
727 p->job->gws_size = amdgpu_bo_size(gws);
728 }
729 if (oa) {
730 p->job->oa_base = amdgpu_bo_gpu_offset(oa);
731 p->job->oa_size = amdgpu_bo_size(oa);
732 }
733
734 if (!r && p->uf_entry.robj) {
735 struct amdgpu_bo *uf = p->uf_entry.robj;
736
737 r = amdgpu_ttm_alloc_gart(&uf->tbo);
738 p->job->uf_addr += amdgpu_bo_gpu_offset(uf);
739 }
740
741 error_validate:
742 if (r)
743 ttm_eu_backoff_reservation(&p->ticket, &p->validated);
744
745 error_free_pages:
746
747 amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
748 if (!e->user_pages)
749 continue;
750
751 release_pages(e->user_pages,
752 e->robj->tbo.ttm->num_pages);
753 kvfree(e->user_pages);
754 }
755
756 return r;
757 }
758
amdgpu_cs_sync_rings(struct amdgpu_cs_parser * p)759 static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p)
760 {
761 struct amdgpu_bo_list_entry *e;
762 int r;
763
764 list_for_each_entry(e, &p->validated, tv.head) {
765 struct reservation_object *resv = e->robj->tbo.resv;
766 r = amdgpu_sync_resv(p->adev, &p->job->sync, resv, p->filp,
767 amdgpu_bo_explicit_sync(e->robj));
768
769 if (r)
770 return r;
771 }
772 return 0;
773 }
774
775 /**
776 * cs_parser_fini() - clean parser states
777 * @parser: parser structure holding parsing context.
778 * @error: error number
779 *
780 * If error is set than unvalidate buffer, otherwise just free memory
781 * used by parsing context.
782 **/
amdgpu_cs_parser_fini(struct amdgpu_cs_parser * parser,int error,bool backoff)783 static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error,
784 bool backoff)
785 {
786 unsigned i;
787
788 if (error && backoff)
789 ttm_eu_backoff_reservation(&parser->ticket,
790 &parser->validated);
791
792 for (i = 0; i < parser->num_post_dep_syncobjs; i++)
793 drm_syncobj_put(parser->post_dep_syncobjs[i]);
794 kfree(parser->post_dep_syncobjs);
795
796 dma_fence_put(parser->fence);
797
798 if (parser->ctx) {
799 mutex_unlock(&parser->ctx->lock);
800 amdgpu_ctx_put(parser->ctx);
801 }
802 if (parser->bo_list)
803 amdgpu_bo_list_put(parser->bo_list);
804
805 for (i = 0; i < parser->nchunks; i++)
806 kvfree(parser->chunks[i].kdata);
807 kfree(parser->chunks);
808 if (parser->job)
809 amdgpu_job_free(parser->job);
810 amdgpu_bo_unref(&parser->uf_entry.robj);
811 }
812
amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser * p)813 static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p)
814 {
815 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
816 struct amdgpu_device *adev = p->adev;
817 struct amdgpu_vm *vm = &fpriv->vm;
818 struct amdgpu_bo_list_entry *e;
819 struct amdgpu_bo_va *bo_va;
820 struct amdgpu_bo *bo;
821 int r;
822
823 r = amdgpu_vm_clear_freed(adev, vm, NULL);
824 if (r)
825 return r;
826
827 r = amdgpu_vm_bo_update(adev, fpriv->prt_va, false);
828 if (r)
829 return r;
830
831 r = amdgpu_sync_fence(adev, &p->job->sync,
832 fpriv->prt_va->last_pt_update, false);
833 if (r)
834 return r;
835
836 if (amdgpu_sriov_vf(adev)) {
837 struct dma_fence *f;
838
839 bo_va = fpriv->csa_va;
840 BUG_ON(!bo_va);
841 r = amdgpu_vm_bo_update(adev, bo_va, false);
842 if (r)
843 return r;
844
845 f = bo_va->last_pt_update;
846 r = amdgpu_sync_fence(adev, &p->job->sync, f, false);
847 if (r)
848 return r;
849 }
850
851 amdgpu_bo_list_for_each_entry(e, p->bo_list) {
852 struct dma_fence *f;
853
854 /* ignore duplicates */
855 bo = e->robj;
856 if (!bo)
857 continue;
858
859 bo_va = e->bo_va;
860 if (bo_va == NULL)
861 continue;
862
863 r = amdgpu_vm_bo_update(adev, bo_va, false);
864 if (r)
865 return r;
866
867 f = bo_va->last_pt_update;
868 r = amdgpu_sync_fence(adev, &p->job->sync, f, false);
869 if (r)
870 return r;
871 }
872
873 r = amdgpu_vm_handle_moved(adev, vm);
874 if (r)
875 return r;
876
877 r = amdgpu_vm_update_directories(adev, vm);
878 if (r)
879 return r;
880
881 r = amdgpu_sync_fence(adev, &p->job->sync, vm->last_update, false);
882 if (r)
883 return r;
884
885 if (amdgpu_vm_debug) {
886 /* Invalidate all BOs to test for userspace bugs */
887 amdgpu_bo_list_for_each_entry(e, p->bo_list) {
888 /* ignore duplicates */
889 if (!e->robj)
890 continue;
891
892 amdgpu_vm_bo_invalidate(adev, e->robj, false);
893 }
894 }
895
896 return r;
897 }
898
amdgpu_cs_ib_vm_chunk(struct amdgpu_device * adev,struct amdgpu_cs_parser * p)899 static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev,
900 struct amdgpu_cs_parser *p)
901 {
902 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
903 struct amdgpu_vm *vm = &fpriv->vm;
904 struct amdgpu_ring *ring = p->ring;
905 int r;
906
907 /* Only for UVD/VCE VM emulation */
908 if (p->ring->funcs->parse_cs || p->ring->funcs->patch_cs_in_place) {
909 unsigned i, j;
910
911 for (i = 0, j = 0; i < p->nchunks && j < p->job->num_ibs; i++) {
912 struct drm_amdgpu_cs_chunk_ib *chunk_ib;
913 struct amdgpu_bo_va_mapping *m;
914 struct amdgpu_bo *aobj = NULL;
915 struct amdgpu_cs_chunk *chunk;
916 uint64_t offset, va_start;
917 struct amdgpu_ib *ib;
918 uint8_t *kptr;
919
920 chunk = &p->chunks[i];
921 ib = &p->job->ibs[j];
922 chunk_ib = chunk->kdata;
923
924 if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
925 continue;
926
927 va_start = chunk_ib->va_start & AMDGPU_VA_HOLE_MASK;
928 r = amdgpu_cs_find_mapping(p, va_start, &aobj, &m);
929 if (r) {
930 DRM_ERROR("IB va_start is invalid\n");
931 return r;
932 }
933
934 if ((va_start + chunk_ib->ib_bytes) >
935 (m->last + 1) * AMDGPU_GPU_PAGE_SIZE) {
936 DRM_ERROR("IB va_start+ib_bytes is invalid\n");
937 return -EINVAL;
938 }
939
940 /* the IB should be reserved at this point */
941 r = amdgpu_bo_kmap(aobj, (void **)&kptr);
942 if (r) {
943 return r;
944 }
945
946 offset = m->start * AMDGPU_GPU_PAGE_SIZE;
947 kptr += va_start - offset;
948
949 if (p->ring->funcs->parse_cs) {
950 memcpy(ib->ptr, kptr, chunk_ib->ib_bytes);
951 amdgpu_bo_kunmap(aobj);
952
953 r = amdgpu_ring_parse_cs(ring, p, j);
954 if (r)
955 return r;
956 } else {
957 ib->ptr = (uint32_t *)kptr;
958 r = amdgpu_ring_patch_cs_in_place(ring, p, j);
959 amdgpu_bo_kunmap(aobj);
960 if (r)
961 return r;
962 }
963
964 j++;
965 }
966 }
967
968 if (p->job->vm) {
969 p->job->vm_pd_addr = amdgpu_bo_gpu_offset(vm->root.base.bo);
970
971 r = amdgpu_bo_vm_update_pte(p);
972 if (r)
973 return r;
974
975 r = reservation_object_reserve_shared(vm->root.base.bo->tbo.resv);
976 if (r)
977 return r;
978 }
979
980 return amdgpu_cs_sync_rings(p);
981 }
982
amdgpu_cs_ib_fill(struct amdgpu_device * adev,struct amdgpu_cs_parser * parser)983 static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
984 struct amdgpu_cs_parser *parser)
985 {
986 struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
987 struct amdgpu_vm *vm = &fpriv->vm;
988 int i, j;
989 int r, ce_preempt = 0, de_preempt = 0;
990
991 for (i = 0, j = 0; i < parser->nchunks && j < parser->job->num_ibs; i++) {
992 struct amdgpu_cs_chunk *chunk;
993 struct amdgpu_ib *ib;
994 struct drm_amdgpu_cs_chunk_ib *chunk_ib;
995 struct amdgpu_ring *ring;
996
997 chunk = &parser->chunks[i];
998 ib = &parser->job->ibs[j];
999 chunk_ib = (struct drm_amdgpu_cs_chunk_ib *)chunk->kdata;
1000
1001 if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
1002 continue;
1003
1004 if (chunk_ib->ip_type == AMDGPU_HW_IP_GFX && amdgpu_sriov_vf(adev)) {
1005 if (chunk_ib->flags & AMDGPU_IB_FLAG_PREEMPT) {
1006 if (chunk_ib->flags & AMDGPU_IB_FLAG_CE)
1007 ce_preempt++;
1008 else
1009 de_preempt++;
1010 }
1011
1012 /* each GFX command submit allows 0 or 1 IB preemptible for CE & DE */
1013 if (ce_preempt > 1 || de_preempt > 1)
1014 return -EINVAL;
1015 }
1016
1017 r = amdgpu_queue_mgr_map(adev, &parser->ctx->queue_mgr, chunk_ib->ip_type,
1018 chunk_ib->ip_instance, chunk_ib->ring, &ring);
1019 if (r)
1020 return r;
1021
1022 if (chunk_ib->flags & AMDGPU_IB_FLAG_PREAMBLE)
1023 parser->job->preamble_status |=
1024 AMDGPU_PREAMBLE_IB_PRESENT;
1025
1026 if (parser->ring && parser->ring != ring)
1027 return -EINVAL;
1028
1029 parser->ring = ring;
1030
1031 r = amdgpu_ib_get(adev, vm,
1032 ring->funcs->parse_cs ? chunk_ib->ib_bytes : 0,
1033 ib);
1034 if (r) {
1035 DRM_ERROR("Failed to get ib !\n");
1036 return r;
1037 }
1038
1039 ib->gpu_addr = chunk_ib->va_start;
1040 ib->length_dw = chunk_ib->ib_bytes / 4;
1041 ib->flags = chunk_ib->flags;
1042
1043 j++;
1044 }
1045
1046 /* UVD & VCE fw doesn't support user fences */
1047 if (parser->job->uf_addr && (
1048 parser->ring->funcs->type == AMDGPU_RING_TYPE_UVD ||
1049 parser->ring->funcs->type == AMDGPU_RING_TYPE_VCE))
1050 return -EINVAL;
1051
1052 return amdgpu_ctx_wait_prev_fence(parser->ctx, parser->ring->idx);
1053 }
1054
amdgpu_cs_process_fence_dep(struct amdgpu_cs_parser * p,struct amdgpu_cs_chunk * chunk)1055 static int amdgpu_cs_process_fence_dep(struct amdgpu_cs_parser *p,
1056 struct amdgpu_cs_chunk *chunk)
1057 {
1058 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
1059 unsigned num_deps;
1060 int i, r;
1061 struct drm_amdgpu_cs_chunk_dep *deps;
1062
1063 deps = (struct drm_amdgpu_cs_chunk_dep *)chunk->kdata;
1064 num_deps = chunk->length_dw * 4 /
1065 sizeof(struct drm_amdgpu_cs_chunk_dep);
1066
1067 for (i = 0; i < num_deps; ++i) {
1068 struct amdgpu_ring *ring;
1069 struct amdgpu_ctx *ctx;
1070 struct dma_fence *fence;
1071
1072 ctx = amdgpu_ctx_get(fpriv, deps[i].ctx_id);
1073 if (ctx == NULL)
1074 return -EINVAL;
1075
1076 r = amdgpu_queue_mgr_map(p->adev, &ctx->queue_mgr,
1077 deps[i].ip_type,
1078 deps[i].ip_instance,
1079 deps[i].ring, &ring);
1080 if (r) {
1081 amdgpu_ctx_put(ctx);
1082 return r;
1083 }
1084
1085 fence = amdgpu_ctx_get_fence(ctx, ring,
1086 deps[i].handle);
1087 if (IS_ERR(fence)) {
1088 r = PTR_ERR(fence);
1089 amdgpu_ctx_put(ctx);
1090 return r;
1091 } else if (fence) {
1092 r = amdgpu_sync_fence(p->adev, &p->job->sync, fence,
1093 true);
1094 dma_fence_put(fence);
1095 amdgpu_ctx_put(ctx);
1096 if (r)
1097 return r;
1098 }
1099 }
1100 return 0;
1101 }
1102
amdgpu_syncobj_lookup_and_add_to_sync(struct amdgpu_cs_parser * p,uint32_t handle)1103 static int amdgpu_syncobj_lookup_and_add_to_sync(struct amdgpu_cs_parser *p,
1104 uint32_t handle)
1105 {
1106 int r;
1107 struct dma_fence *fence;
1108 r = drm_syncobj_find_fence(p->filp, handle, &fence);
1109 if (r)
1110 return r;
1111
1112 r = amdgpu_sync_fence(p->adev, &p->job->sync, fence, true);
1113 dma_fence_put(fence);
1114
1115 return r;
1116 }
1117
amdgpu_cs_process_syncobj_in_dep(struct amdgpu_cs_parser * p,struct amdgpu_cs_chunk * chunk)1118 static int amdgpu_cs_process_syncobj_in_dep(struct amdgpu_cs_parser *p,
1119 struct amdgpu_cs_chunk *chunk)
1120 {
1121 unsigned num_deps;
1122 int i, r;
1123 struct drm_amdgpu_cs_chunk_sem *deps;
1124
1125 deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata;
1126 num_deps = chunk->length_dw * 4 /
1127 sizeof(struct drm_amdgpu_cs_chunk_sem);
1128
1129 for (i = 0; i < num_deps; ++i) {
1130 r = amdgpu_syncobj_lookup_and_add_to_sync(p, deps[i].handle);
1131 if (r)
1132 return r;
1133 }
1134 return 0;
1135 }
1136
amdgpu_cs_process_syncobj_out_dep(struct amdgpu_cs_parser * p,struct amdgpu_cs_chunk * chunk)1137 static int amdgpu_cs_process_syncobj_out_dep(struct amdgpu_cs_parser *p,
1138 struct amdgpu_cs_chunk *chunk)
1139 {
1140 unsigned num_deps;
1141 int i;
1142 struct drm_amdgpu_cs_chunk_sem *deps;
1143 deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata;
1144 num_deps = chunk->length_dw * 4 /
1145 sizeof(struct drm_amdgpu_cs_chunk_sem);
1146
1147 p->post_dep_syncobjs = kmalloc_array(num_deps,
1148 sizeof(struct drm_syncobj *),
1149 GFP_KERNEL);
1150 p->num_post_dep_syncobjs = 0;
1151
1152 if (!p->post_dep_syncobjs)
1153 return -ENOMEM;
1154
1155 for (i = 0; i < num_deps; ++i) {
1156 p->post_dep_syncobjs[i] = drm_syncobj_find(p->filp, deps[i].handle);
1157 if (!p->post_dep_syncobjs[i])
1158 return -EINVAL;
1159 p->num_post_dep_syncobjs++;
1160 }
1161 return 0;
1162 }
1163
amdgpu_cs_dependencies(struct amdgpu_device * adev,struct amdgpu_cs_parser * p)1164 static int amdgpu_cs_dependencies(struct amdgpu_device *adev,
1165 struct amdgpu_cs_parser *p)
1166 {
1167 int i, r;
1168
1169 for (i = 0; i < p->nchunks; ++i) {
1170 struct amdgpu_cs_chunk *chunk;
1171
1172 chunk = &p->chunks[i];
1173
1174 if (chunk->chunk_id == AMDGPU_CHUNK_ID_DEPENDENCIES) {
1175 r = amdgpu_cs_process_fence_dep(p, chunk);
1176 if (r)
1177 return r;
1178 } else if (chunk->chunk_id == AMDGPU_CHUNK_ID_SYNCOBJ_IN) {
1179 r = amdgpu_cs_process_syncobj_in_dep(p, chunk);
1180 if (r)
1181 return r;
1182 } else if (chunk->chunk_id == AMDGPU_CHUNK_ID_SYNCOBJ_OUT) {
1183 r = amdgpu_cs_process_syncobj_out_dep(p, chunk);
1184 if (r)
1185 return r;
1186 }
1187 }
1188
1189 return 0;
1190 }
1191
amdgpu_cs_post_dependencies(struct amdgpu_cs_parser * p)1192 static void amdgpu_cs_post_dependencies(struct amdgpu_cs_parser *p)
1193 {
1194 int i;
1195
1196 for (i = 0; i < p->num_post_dep_syncobjs; ++i)
1197 drm_syncobj_replace_fence(p->post_dep_syncobjs[i], p->fence);
1198 }
1199
amdgpu_cs_submit(struct amdgpu_cs_parser * p,union drm_amdgpu_cs * cs)1200 static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
1201 union drm_amdgpu_cs *cs)
1202 {
1203 struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
1204 struct amdgpu_ring *ring = p->ring;
1205 struct drm_sched_entity *entity = &p->ctx->rings[ring->idx].entity;
1206 enum drm_sched_priority priority;
1207 struct amdgpu_bo_list_entry *e;
1208 struct amdgpu_job *job;
1209 uint64_t seq;
1210
1211 int r;
1212
1213 job = p->job;
1214 p->job = NULL;
1215
1216 r = drm_sched_job_init(&job->base, entity, p->filp);
1217 if (r)
1218 goto error_unlock;
1219
1220 /* No memory allocation is allowed while holding the mn lock */
1221 amdgpu_mn_lock(p->mn);
1222 amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
1223 struct amdgpu_bo *bo = e->robj;
1224
1225 if (amdgpu_ttm_tt_userptr_needs_pages(bo->tbo.ttm)) {
1226 r = -ERESTARTSYS;
1227 goto error_abort;
1228 }
1229 }
1230
1231 job->owner = p->filp;
1232 p->fence = dma_fence_get(&job->base.s_fence->finished);
1233
1234 r = amdgpu_ctx_add_fence(p->ctx, ring, p->fence, &seq);
1235 if (r) {
1236 dma_fence_put(p->fence);
1237 dma_fence_put(&job->base.s_fence->finished);
1238 amdgpu_job_free(job);
1239 amdgpu_mn_unlock(p->mn);
1240 return r;
1241 }
1242
1243 amdgpu_cs_post_dependencies(p);
1244
1245 if ((job->preamble_status & AMDGPU_PREAMBLE_IB_PRESENT) &&
1246 !p->ctx->preamble_presented) {
1247 job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT_FIRST;
1248 p->ctx->preamble_presented = true;
1249 }
1250
1251 cs->out.handle = seq;
1252 job->uf_sequence = seq;
1253
1254 amdgpu_job_free_resources(job);
1255
1256 trace_amdgpu_cs_ioctl(job);
1257 amdgpu_vm_bo_trace_cs(&fpriv->vm, &p->ticket);
1258 priority = job->base.s_priority;
1259 drm_sched_entity_push_job(&job->base, entity);
1260
1261 ring = to_amdgpu_ring(entity->rq->sched);
1262 amdgpu_ring_priority_get(ring, priority);
1263
1264 ttm_eu_fence_buffer_objects(&p->ticket, &p->validated, p->fence);
1265 amdgpu_mn_unlock(p->mn);
1266
1267 return 0;
1268
1269 error_abort:
1270 dma_fence_put(&job->base.s_fence->finished);
1271 job->base.s_fence = NULL;
1272 amdgpu_mn_unlock(p->mn);
1273
1274 error_unlock:
1275 amdgpu_job_free(job);
1276 return r;
1277 }
1278
amdgpu_cs_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)1279 int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
1280 {
1281 struct amdgpu_device *adev = dev->dev_private;
1282 union drm_amdgpu_cs *cs = data;
1283 struct amdgpu_cs_parser parser = {};
1284 bool reserved_buffers = false;
1285 int i, r;
1286
1287 if (!adev->accel_working)
1288 return -EBUSY;
1289
1290 parser.adev = adev;
1291 parser.filp = filp;
1292
1293 r = amdgpu_cs_parser_init(&parser, data);
1294 if (r) {
1295 DRM_ERROR("Failed to initialize parser !\n");
1296 goto out;
1297 }
1298
1299 r = amdgpu_cs_ib_fill(adev, &parser);
1300 if (r)
1301 goto out;
1302
1303 r = amdgpu_cs_parser_bos(&parser, data);
1304 if (r) {
1305 if (r == -ENOMEM)
1306 DRM_ERROR("Not enough memory for command submission!\n");
1307 else if (r != -ERESTARTSYS)
1308 DRM_ERROR("Failed to process the buffer list %d!\n", r);
1309 goto out;
1310 }
1311
1312 reserved_buffers = true;
1313
1314 r = amdgpu_cs_dependencies(adev, &parser);
1315 if (r) {
1316 DRM_ERROR("Failed in the dependencies handling %d!\n", r);
1317 goto out;
1318 }
1319
1320 for (i = 0; i < parser.job->num_ibs; i++)
1321 trace_amdgpu_cs(&parser, i);
1322
1323 r = amdgpu_cs_ib_vm_chunk(adev, &parser);
1324 if (r)
1325 goto out;
1326
1327 r = amdgpu_cs_submit(&parser, cs);
1328
1329 out:
1330 amdgpu_cs_parser_fini(&parser, r, reserved_buffers);
1331 return r;
1332 }
1333
1334 /**
1335 * amdgpu_cs_wait_ioctl - wait for a command submission to finish
1336 *
1337 * @dev: drm device
1338 * @data: data from userspace
1339 * @filp: file private
1340 *
1341 * Wait for the command submission identified by handle to finish.
1342 */
amdgpu_cs_wait_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)1343 int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data,
1344 struct drm_file *filp)
1345 {
1346 union drm_amdgpu_wait_cs *wait = data;
1347 struct amdgpu_device *adev = dev->dev_private;
1348 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout);
1349 struct amdgpu_ring *ring = NULL;
1350 struct amdgpu_ctx *ctx;
1351 struct dma_fence *fence;
1352 long r;
1353
1354 ctx = amdgpu_ctx_get(filp->driver_priv, wait->in.ctx_id);
1355 if (ctx == NULL)
1356 return -EINVAL;
1357
1358 r = amdgpu_queue_mgr_map(adev, &ctx->queue_mgr,
1359 wait->in.ip_type, wait->in.ip_instance,
1360 wait->in.ring, &ring);
1361 if (r) {
1362 amdgpu_ctx_put(ctx);
1363 return r;
1364 }
1365
1366 fence = amdgpu_ctx_get_fence(ctx, ring, wait->in.handle);
1367 if (IS_ERR(fence))
1368 r = PTR_ERR(fence);
1369 else if (fence) {
1370 r = dma_fence_wait_timeout(fence, true, timeout);
1371 if (r > 0 && fence->error)
1372 r = fence->error;
1373 dma_fence_put(fence);
1374 } else
1375 r = 1;
1376
1377 amdgpu_ctx_put(ctx);
1378 if (r < 0)
1379 return r;
1380
1381 memset(wait, 0, sizeof(*wait));
1382 wait->out.status = (r == 0);
1383
1384 return 0;
1385 }
1386
1387 /**
1388 * amdgpu_cs_get_fence - helper to get fence from drm_amdgpu_fence
1389 *
1390 * @adev: amdgpu device
1391 * @filp: file private
1392 * @user: drm_amdgpu_fence copied from user space
1393 */
amdgpu_cs_get_fence(struct amdgpu_device * adev,struct drm_file * filp,struct drm_amdgpu_fence * user)1394 static struct dma_fence *amdgpu_cs_get_fence(struct amdgpu_device *adev,
1395 struct drm_file *filp,
1396 struct drm_amdgpu_fence *user)
1397 {
1398 struct amdgpu_ring *ring;
1399 struct amdgpu_ctx *ctx;
1400 struct dma_fence *fence;
1401 int r;
1402
1403 ctx = amdgpu_ctx_get(filp->driver_priv, user->ctx_id);
1404 if (ctx == NULL)
1405 return ERR_PTR(-EINVAL);
1406
1407 r = amdgpu_queue_mgr_map(adev, &ctx->queue_mgr, user->ip_type,
1408 user->ip_instance, user->ring, &ring);
1409 if (r) {
1410 amdgpu_ctx_put(ctx);
1411 return ERR_PTR(r);
1412 }
1413
1414 fence = amdgpu_ctx_get_fence(ctx, ring, user->seq_no);
1415 amdgpu_ctx_put(ctx);
1416
1417 return fence;
1418 }
1419
amdgpu_cs_fence_to_handle_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)1420 int amdgpu_cs_fence_to_handle_ioctl(struct drm_device *dev, void *data,
1421 struct drm_file *filp)
1422 {
1423 struct amdgpu_device *adev = dev->dev_private;
1424 union drm_amdgpu_fence_to_handle *info = data;
1425 struct dma_fence *fence;
1426 struct drm_syncobj *syncobj;
1427 struct sync_file *sync_file;
1428 int fd, r;
1429
1430 fence = amdgpu_cs_get_fence(adev, filp, &info->in.fence);
1431 if (IS_ERR(fence))
1432 return PTR_ERR(fence);
1433
1434 switch (info->in.what) {
1435 case AMDGPU_FENCE_TO_HANDLE_GET_SYNCOBJ:
1436 r = drm_syncobj_create(&syncobj, 0, fence);
1437 dma_fence_put(fence);
1438 if (r)
1439 return r;
1440 r = drm_syncobj_get_handle(filp, syncobj, &info->out.handle);
1441 drm_syncobj_put(syncobj);
1442 return r;
1443
1444 case AMDGPU_FENCE_TO_HANDLE_GET_SYNCOBJ_FD:
1445 r = drm_syncobj_create(&syncobj, 0, fence);
1446 dma_fence_put(fence);
1447 if (r)
1448 return r;
1449 r = drm_syncobj_get_fd(syncobj, (int*)&info->out.handle);
1450 drm_syncobj_put(syncobj);
1451 return r;
1452
1453 case AMDGPU_FENCE_TO_HANDLE_GET_SYNC_FILE_FD:
1454 fd = get_unused_fd_flags(O_CLOEXEC);
1455 if (fd < 0) {
1456 dma_fence_put(fence);
1457 return fd;
1458 }
1459
1460 sync_file = sync_file_create(fence);
1461 dma_fence_put(fence);
1462 if (!sync_file) {
1463 put_unused_fd(fd);
1464 return -ENOMEM;
1465 }
1466
1467 fd_install(fd, sync_file->file);
1468 info->out.handle = fd;
1469 return 0;
1470
1471 default:
1472 return -EINVAL;
1473 }
1474 }
1475
1476 /**
1477 * amdgpu_cs_wait_all_fence - wait on all fences to signal
1478 *
1479 * @adev: amdgpu device
1480 * @filp: file private
1481 * @wait: wait parameters
1482 * @fences: array of drm_amdgpu_fence
1483 */
amdgpu_cs_wait_all_fences(struct amdgpu_device * adev,struct drm_file * filp,union drm_amdgpu_wait_fences * wait,struct drm_amdgpu_fence * fences)1484 static int amdgpu_cs_wait_all_fences(struct amdgpu_device *adev,
1485 struct drm_file *filp,
1486 union drm_amdgpu_wait_fences *wait,
1487 struct drm_amdgpu_fence *fences)
1488 {
1489 uint32_t fence_count = wait->in.fence_count;
1490 unsigned int i;
1491 long r = 1;
1492
1493 for (i = 0; i < fence_count; i++) {
1494 struct dma_fence *fence;
1495 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1496
1497 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1498 if (IS_ERR(fence))
1499 return PTR_ERR(fence);
1500 else if (!fence)
1501 continue;
1502
1503 r = dma_fence_wait_timeout(fence, true, timeout);
1504 dma_fence_put(fence);
1505 if (r < 0)
1506 return r;
1507
1508 if (r == 0)
1509 break;
1510
1511 if (fence->error)
1512 return fence->error;
1513 }
1514
1515 memset(wait, 0, sizeof(*wait));
1516 wait->out.status = (r > 0);
1517
1518 return 0;
1519 }
1520
1521 /**
1522 * amdgpu_cs_wait_any_fence - wait on any fence to signal
1523 *
1524 * @adev: amdgpu device
1525 * @filp: file private
1526 * @wait: wait parameters
1527 * @fences: array of drm_amdgpu_fence
1528 */
amdgpu_cs_wait_any_fence(struct amdgpu_device * adev,struct drm_file * filp,union drm_amdgpu_wait_fences * wait,struct drm_amdgpu_fence * fences)1529 static int amdgpu_cs_wait_any_fence(struct amdgpu_device *adev,
1530 struct drm_file *filp,
1531 union drm_amdgpu_wait_fences *wait,
1532 struct drm_amdgpu_fence *fences)
1533 {
1534 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1535 uint32_t fence_count = wait->in.fence_count;
1536 uint32_t first = ~0;
1537 struct dma_fence **array;
1538 unsigned int i;
1539 long r;
1540
1541 /* Prepare the fence array */
1542 array = kcalloc(fence_count, sizeof(struct dma_fence *), GFP_KERNEL);
1543
1544 if (array == NULL)
1545 return -ENOMEM;
1546
1547 for (i = 0; i < fence_count; i++) {
1548 struct dma_fence *fence;
1549
1550 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1551 if (IS_ERR(fence)) {
1552 r = PTR_ERR(fence);
1553 goto err_free_fence_array;
1554 } else if (fence) {
1555 array[i] = fence;
1556 } else { /* NULL, the fence has been already signaled */
1557 r = 1;
1558 first = i;
1559 goto out;
1560 }
1561 }
1562
1563 r = dma_fence_wait_any_timeout(array, fence_count, true, timeout,
1564 &first);
1565 if (r < 0)
1566 goto err_free_fence_array;
1567
1568 out:
1569 memset(wait, 0, sizeof(*wait));
1570 wait->out.status = (r > 0);
1571 wait->out.first_signaled = first;
1572
1573 if (first < fence_count && array[first])
1574 r = array[first]->error;
1575 else
1576 r = 0;
1577
1578 err_free_fence_array:
1579 for (i = 0; i < fence_count; i++)
1580 dma_fence_put(array[i]);
1581 kfree(array);
1582
1583 return r;
1584 }
1585
1586 /**
1587 * amdgpu_cs_wait_fences_ioctl - wait for multiple command submissions to finish
1588 *
1589 * @dev: drm device
1590 * @data: data from userspace
1591 * @filp: file private
1592 */
amdgpu_cs_wait_fences_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)1593 int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data,
1594 struct drm_file *filp)
1595 {
1596 struct amdgpu_device *adev = dev->dev_private;
1597 union drm_amdgpu_wait_fences *wait = data;
1598 uint32_t fence_count = wait->in.fence_count;
1599 struct drm_amdgpu_fence *fences_user;
1600 struct drm_amdgpu_fence *fences;
1601 int r;
1602
1603 /* Get the fences from userspace */
1604 fences = kmalloc_array(fence_count, sizeof(struct drm_amdgpu_fence),
1605 GFP_KERNEL);
1606 if (fences == NULL)
1607 return -ENOMEM;
1608
1609 fences_user = u64_to_user_ptr(wait->in.fences);
1610 if (copy_from_user(fences, fences_user,
1611 sizeof(struct drm_amdgpu_fence) * fence_count)) {
1612 r = -EFAULT;
1613 goto err_free_fences;
1614 }
1615
1616 if (wait->in.wait_all)
1617 r = amdgpu_cs_wait_all_fences(adev, filp, wait, fences);
1618 else
1619 r = amdgpu_cs_wait_any_fence(adev, filp, wait, fences);
1620
1621 err_free_fences:
1622 kfree(fences);
1623
1624 return r;
1625 }
1626
1627 /**
1628 * amdgpu_cs_find_bo_va - find bo_va for VM address
1629 *
1630 * @parser: command submission parser context
1631 * @addr: VM address
1632 * @bo: resulting BO of the mapping found
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 */
amdgpu_cs_find_mapping(struct amdgpu_cs_parser * parser,uint64_t addr,struct amdgpu_bo ** bo,struct amdgpu_bo_va_mapping ** map)1638 int 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 (READ_ONCE((*bo)->tbo.resv->lock.ctx) != &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 }
1671
