2 * Copyright (C) 2008 Ben Skeggs.
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 #include "nouveau_drv.h"
30 #include "nouveau_drm.h"
31 #include "nouveau_dma.h"
33 #define nouveau_gem_pushbuf_sync(chan) 0
36 nouveau_gem_object_new(struct drm_gem_object *gem)
42 nouveau_gem_object_del(struct drm_gem_object *gem)
44 struct nouveau_bo *nvbo = gem->driver_private;
45 struct ttm_buffer_object *bo = &nvbo->bo;
51 if (unlikely(nvbo->cpu_filp))
52 ttm_bo_synccpu_write_release(bo);
54 if (unlikely(nvbo->pin_refcnt)) {
56 nouveau_bo_unpin(nvbo);
63 nouveau_gem_new(struct drm_device *dev, struct nouveau_channel *chan,
64 int size, int align, uint32_t flags, uint32_t tile_mode,
65 uint32_t tile_flags, bool no_vm, bool mappable,
66 struct nouveau_bo **pnvbo)
68 struct nouveau_bo *nvbo;
71 ret = nouveau_bo_new(dev, chan, size, align, flags, tile_mode,
72 tile_flags, no_vm, mappable, pnvbo);
77 nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
79 nouveau_bo_ref(NULL, pnvbo);
83 nvbo->bo.persistant_swap_storage = nvbo->gem->filp;
84 nvbo->gem->driver_private = nvbo;
89 nouveau_gem_info(struct drm_gem_object *gem, struct drm_nouveau_gem_info *rep)
91 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
93 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
94 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
96 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
98 rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
99 rep->offset = nvbo->bo.offset;
100 rep->map_handle = nvbo->mappable ? nvbo->bo.addr_space_offset : 0;
101 rep->tile_mode = nvbo->tile_mode;
102 rep->tile_flags = nvbo->tile_flags;
107 nouveau_gem_tile_flags_valid(struct drm_device *dev, uint32_t tile_flags) {
108 switch (tile_flags) {
119 NV_ERROR(dev, "bad page flags: 0x%08x\n", tile_flags);
127 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
128 struct drm_file *file_priv)
130 struct drm_nouveau_private *dev_priv = dev->dev_private;
131 struct drm_nouveau_gem_new *req = data;
132 struct nouveau_bo *nvbo = NULL;
133 struct nouveau_channel *chan = NULL;
137 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
139 if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL))
140 dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping;
142 if (req->channel_hint) {
143 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel_hint,
147 if (req->info.domain & NOUVEAU_GEM_DOMAIN_VRAM)
148 flags |= TTM_PL_FLAG_VRAM;
149 if (req->info.domain & NOUVEAU_GEM_DOMAIN_GART)
150 flags |= TTM_PL_FLAG_TT;
151 if (!flags || req->info.domain & NOUVEAU_GEM_DOMAIN_CPU)
152 flags |= TTM_PL_FLAG_SYSTEM;
154 if (!nouveau_gem_tile_flags_valid(dev, req->info.tile_flags))
157 ret = nouveau_gem_new(dev, chan, req->info.size, req->align, flags,
158 req->info.tile_mode, req->info.tile_flags, false,
159 (req->info.domain & NOUVEAU_GEM_DOMAIN_MAPPABLE),
164 ret = nouveau_gem_info(nvbo->gem, &req->info);
168 ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
170 drm_gem_object_handle_unreference_unlocked(nvbo->gem);
173 drm_gem_object_unreference_unlocked(nvbo->gem);
178 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
179 uint32_t write_domains, uint32_t valid_domains)
181 struct nouveau_bo *nvbo = gem->driver_private;
182 struct ttm_buffer_object *bo = &nvbo->bo;
183 uint32_t domains = valid_domains &
184 (write_domains ? write_domains : read_domains);
185 uint32_t pref_flags = 0, valid_flags = 0;
190 if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
191 valid_flags |= TTM_PL_FLAG_VRAM;
193 if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
194 valid_flags |= TTM_PL_FLAG_TT;
196 if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
197 bo->mem.mem_type == TTM_PL_VRAM)
198 pref_flags |= TTM_PL_FLAG_VRAM;
200 else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
201 bo->mem.mem_type == TTM_PL_TT)
202 pref_flags |= TTM_PL_FLAG_TT;
204 else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
205 pref_flags |= TTM_PL_FLAG_VRAM;
208 pref_flags |= TTM_PL_FLAG_TT;
210 nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
216 struct list_head vram_list;
217 struct list_head gart_list;
218 struct list_head both_list;
222 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
224 struct list_head *entry, *tmp;
225 struct nouveau_bo *nvbo;
227 list_for_each_safe(entry, tmp, list) {
228 nvbo = list_entry(entry, struct nouveau_bo, entry);
230 struct nouveau_fence *prev_fence;
232 spin_lock(&nvbo->bo.lock);
233 prev_fence = nvbo->bo.sync_obj;
234 nvbo->bo.sync_obj = nouveau_fence_ref(fence);
235 spin_unlock(&nvbo->bo.lock);
236 nouveau_fence_unref((void *)&prev_fence);
239 if (unlikely(nvbo->validate_mapped)) {
240 ttm_bo_kunmap(&nvbo->kmap);
241 nvbo->validate_mapped = false;
244 list_del(&nvbo->entry);
245 nvbo->reserved_by = NULL;
246 ttm_bo_unreserve(&nvbo->bo);
247 drm_gem_object_unreference(nvbo->gem);
252 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
254 validate_fini_list(&op->vram_list, fence);
255 validate_fini_list(&op->gart_list, fence);
256 validate_fini_list(&op->both_list, fence);
260 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
261 struct drm_nouveau_gem_pushbuf_bo *pbbo,
262 int nr_buffers, struct validate_op *op)
264 struct drm_device *dev = chan->dev;
265 struct drm_nouveau_private *dev_priv = dev->dev_private;
270 sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
272 if (++trycnt > 100000) {
273 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
277 for (i = 0; i < nr_buffers; i++) {
278 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
279 struct drm_gem_object *gem;
280 struct nouveau_bo *nvbo;
282 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
284 NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
285 validate_fini(op, NULL);
288 nvbo = gem->driver_private;
290 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
291 NV_ERROR(dev, "multiple instances of buffer %d on "
292 "validation list\n", b->handle);
293 validate_fini(op, NULL);
297 ret = ttm_bo_reserve(&nvbo->bo, false, false, true, sequence);
299 validate_fini(op, NULL);
301 ret = ttm_bo_wait_unreserved(&nvbo->bo, false);
302 drm_gem_object_unreference(gem);
304 NV_ERROR(dev, "fail reserve\n");
310 b->user_priv = (uint64_t)(unsigned long)nvbo;
311 nvbo->reserved_by = file_priv;
312 nvbo->pbbo_index = i;
313 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
314 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
315 list_add_tail(&nvbo->entry, &op->both_list);
317 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
318 list_add_tail(&nvbo->entry, &op->vram_list);
320 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
321 list_add_tail(&nvbo->entry, &op->gart_list);
323 NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
325 list_add_tail(&nvbo->entry, &op->both_list);
326 validate_fini(op, NULL);
330 if (unlikely(atomic_read(&nvbo->bo.cpu_writers) > 0)) {
331 validate_fini(op, NULL);
333 if (nvbo->cpu_filp == file_priv) {
334 NV_ERROR(dev, "bo %p mapped by process trying "
335 "to validate it!\n", nvbo);
339 ret = ttm_bo_wait_cpu(&nvbo->bo, false);
341 NV_ERROR(dev, "fail wait_cpu\n");
352 validate_list(struct nouveau_channel *chan, struct list_head *list,
353 struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
355 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
356 (void __force __user *)(uintptr_t)user_pbbo_ptr;
357 struct drm_device *dev = chan->dev;
358 struct nouveau_bo *nvbo;
361 list_for_each_entry(nvbo, list, entry) {
362 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
363 struct nouveau_fence *prev_fence = nvbo->bo.sync_obj;
365 if (prev_fence && nouveau_fence_channel(prev_fence) != chan) {
366 spin_lock(&nvbo->bo.lock);
367 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
368 spin_unlock(&nvbo->bo.lock);
370 NV_ERROR(dev, "fail wait other chan\n");
375 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
379 NV_ERROR(dev, "fail set_domain\n");
383 nvbo->channel = chan;
384 ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement,
386 nvbo->channel = NULL;
388 NV_ERROR(dev, "fail ttm_validate\n");
392 if (nvbo->bo.offset == b->presumed.offset &&
393 ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
394 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
395 (nvbo->bo.mem.mem_type == TTM_PL_TT &&
396 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
399 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
400 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
402 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
403 b->presumed.offset = nvbo->bo.offset;
404 b->presumed.valid = 0;
407 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
408 &b->presumed, sizeof(b->presumed)))
416 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
417 struct drm_file *file_priv,
418 struct drm_nouveau_gem_pushbuf_bo *pbbo,
419 uint64_t user_buffers, int nr_buffers,
420 struct validate_op *op, int *apply_relocs)
422 struct drm_device *dev = chan->dev;
425 INIT_LIST_HEAD(&op->vram_list);
426 INIT_LIST_HEAD(&op->gart_list);
427 INIT_LIST_HEAD(&op->both_list);
432 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
434 NV_ERROR(dev, "validate_init\n");
438 ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
439 if (unlikely(ret < 0)) {
440 NV_ERROR(dev, "validate vram_list\n");
441 validate_fini(op, NULL);
446 ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
447 if (unlikely(ret < 0)) {
448 NV_ERROR(dev, "validate gart_list\n");
449 validate_fini(op, NULL);
454 ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
455 if (unlikely(ret < 0)) {
456 NV_ERROR(dev, "validate both_list\n");
457 validate_fini(op, NULL);
462 *apply_relocs = relocs;
467 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
470 void __user *userptr = (void __force __user *)(uintptr_t)user;
472 mem = kmalloc(nmemb * size, GFP_KERNEL);
474 return ERR_PTR(-ENOMEM);
476 if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
478 return ERR_PTR(-EFAULT);
485 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
486 struct drm_nouveau_gem_pushbuf *req,
487 struct drm_nouveau_gem_pushbuf_bo *bo)
489 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
493 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
495 return PTR_ERR(reloc);
497 for (i = 0; i < req->nr_relocs; i++) {
498 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
499 struct drm_nouveau_gem_pushbuf_bo *b;
500 struct nouveau_bo *nvbo;
503 if (unlikely(r->bo_index > req->nr_buffers)) {
504 NV_ERROR(dev, "reloc bo index invalid\n");
509 b = &bo[r->bo_index];
510 if (b->presumed.valid)
513 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
514 NV_ERROR(dev, "reloc container bo index invalid\n");
518 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
520 if (unlikely(r->reloc_bo_offset + 4 >
521 nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
522 NV_ERROR(dev, "reloc outside of bo\n");
527 if (!nvbo->kmap.virtual) {
528 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
531 NV_ERROR(dev, "failed kmap for reloc\n");
534 nvbo->validate_mapped = true;
537 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
538 data = b->presumed.offset + r->data;
540 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
541 data = (b->presumed.offset + r->data) >> 32;
545 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
546 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
552 spin_lock(&nvbo->bo.lock);
553 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
554 spin_unlock(&nvbo->bo.lock);
556 NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret);
560 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
568 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
569 struct drm_file *file_priv)
571 struct drm_nouveau_private *dev_priv = dev->dev_private;
572 struct drm_nouveau_gem_pushbuf *req = data;
573 struct drm_nouveau_gem_pushbuf_push *push;
574 struct drm_nouveau_gem_pushbuf_bo *bo;
575 struct nouveau_channel *chan;
576 struct validate_op op;
577 struct nouveau_fence *fence = 0;
578 int i, j, ret = 0, do_reloc = 0;
580 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
581 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
583 req->vram_available = dev_priv->fb_aper_free;
584 req->gart_available = dev_priv->gart_info.aper_free;
585 if (unlikely(req->nr_push == 0))
588 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
589 NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n",
590 req->nr_push, NOUVEAU_GEM_MAX_PUSH);
594 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
595 NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n",
596 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
600 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
601 NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n",
602 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
606 push = u_memcpya(req->push, req->nr_push, sizeof(*push));
608 return PTR_ERR(push);
610 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
616 mutex_lock(&dev->struct_mutex);
618 /* Validate buffer list */
619 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
620 req->nr_buffers, &op, &do_reloc);
622 NV_ERROR(dev, "validate: %d\n", ret);
626 /* Apply any relocations that are required */
628 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
630 NV_ERROR(dev, "reloc apply: %d\n", ret);
635 if (chan->dma.ib_max) {
636 ret = nouveau_dma_wait(chan, req->nr_push + 1, 6);
638 NV_INFO(dev, "nv50cal_space: %d\n", ret);
642 for (i = 0; i < req->nr_push; i++) {
643 struct nouveau_bo *nvbo = (void *)(unsigned long)
644 bo[push[i].bo_index].user_priv;
646 nv50_dma_push(chan, nvbo, push[i].offset,
650 if (dev_priv->card_type >= NV_20) {
651 ret = RING_SPACE(chan, req->nr_push * 2);
653 NV_ERROR(dev, "cal_space: %d\n", ret);
657 for (i = 0; i < req->nr_push; i++) {
658 struct nouveau_bo *nvbo = (void *)(unsigned long)
659 bo[push[i].bo_index].user_priv;
660 struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
662 OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
663 push[i].offset) | 2);
667 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
669 NV_ERROR(dev, "jmp_space: %d\n", ret);
673 for (i = 0; i < req->nr_push; i++) {
674 struct nouveau_bo *nvbo = (void *)(unsigned long)
675 bo[push[i].bo_index].user_priv;
676 struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
679 cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
681 if (unlikely(cmd != req->suffix0)) {
682 if (!nvbo->kmap.virtual) {
683 ret = ttm_bo_kmap(&nvbo->bo, 0,
691 nvbo->validate_mapped = true;
694 nouveau_bo_wr32(nvbo, (push[i].offset +
695 push[i].length - 8) / 4, cmd);
698 OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
699 push[i].offset) | 0x20000000);
701 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
706 ret = nouveau_fence_new(chan, &fence, true);
708 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
714 validate_fini(&op, fence);
715 nouveau_fence_unref((void**)&fence);
716 mutex_unlock(&dev->struct_mutex);
721 if (chan->dma.ib_max) {
722 req->suffix0 = 0x00000000;
723 req->suffix1 = 0x00000000;
725 if (dev_priv->card_type >= NV_20) {
726 req->suffix0 = 0x00020000;
727 req->suffix1 = 0x00000000;
729 req->suffix0 = 0x20000000 |
730 (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
731 req->suffix1 = 0x00000000;
737 static inline uint32_t
738 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
742 if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
743 flags |= TTM_PL_FLAG_VRAM;
744 if (domain & NOUVEAU_GEM_DOMAIN_GART)
745 flags |= TTM_PL_FLAG_TT;
751 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
752 struct drm_file *file_priv)
754 struct drm_nouveau_gem_cpu_prep *req = data;
755 struct drm_gem_object *gem;
756 struct nouveau_bo *nvbo;
757 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
760 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
762 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
765 nvbo = nouveau_gem_object(gem);
767 if (nvbo->cpu_filp) {
768 if (nvbo->cpu_filp == file_priv)
771 ret = ttm_bo_wait_cpu(&nvbo->bo, no_wait);
776 if (req->flags & NOUVEAU_GEM_CPU_PREP_NOBLOCK) {
777 spin_lock(&nvbo->bo.lock);
778 ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait);
779 spin_unlock(&nvbo->bo.lock);
781 ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait);
783 nvbo->cpu_filp = file_priv;
787 drm_gem_object_unreference_unlocked(gem);
792 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
793 struct drm_file *file_priv)
795 struct drm_nouveau_gem_cpu_prep *req = data;
796 struct drm_gem_object *gem;
797 struct nouveau_bo *nvbo;
800 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
802 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
805 nvbo = nouveau_gem_object(gem);
807 if (nvbo->cpu_filp != file_priv)
809 nvbo->cpu_filp = NULL;
811 ttm_bo_synccpu_write_release(&nvbo->bo);
815 drm_gem_object_unreference_unlocked(gem);
820 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
821 struct drm_file *file_priv)
823 struct drm_nouveau_gem_info *req = data;
824 struct drm_gem_object *gem;
827 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
829 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
833 ret = nouveau_gem_info(gem, req);
834 drm_gem_object_unreference_unlocked(gem);