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nouveau_gem.c
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1 /*
2  * Copyright (C) 2008 Ben Skeggs.
3  * All Rights Reserved.
4  *
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:
12  *
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.
16  *
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.
24  *
25  */
26 
27 #include <linux/dma-buf.h>
28 
29 #include <subdev/fb.h>
30 
31 #include "nouveau_drm.h"
32 #include "nouveau_dma.h"
33 #include "nouveau_fence.h"
34 #include "nouveau_abi16.h"
35 
36 #include "nouveau_ttm.h"
37 #include "nouveau_gem.h"
38 
39 int
40 nouveau_gem_object_new(struct drm_gem_object *gem)
41 {
42  return 0;
43 }
44 
45 void
46 nouveau_gem_object_del(struct drm_gem_object *gem)
47 {
48  struct nouveau_bo *nvbo = gem->driver_private;
49  struct ttm_buffer_object *bo = &nvbo->bo;
50 
51  if (!nvbo)
52  return;
53  nvbo->gem = NULL;
54 
55  if (unlikely(nvbo->pin_refcnt)) {
56  nvbo->pin_refcnt = 1;
57  nouveau_bo_unpin(nvbo);
58  }
59 
60  if (gem->import_attach)
61  drm_prime_gem_destroy(gem, nvbo->bo.sg);
62 
63  ttm_bo_unref(&bo);
64 
65  drm_gem_object_release(gem);
66  kfree(gem);
67 }
68 
69 int
70 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
71 {
72  struct nouveau_cli *cli = nouveau_cli(file_priv);
73  struct nouveau_bo *nvbo = nouveau_gem_object(gem);
74  struct nouveau_vma *vma;
75  int ret;
76 
77  if (!cli->base.vm)
78  return 0;
79 
80  ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
81  if (ret)
82  return ret;
83 
84  vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
85  if (!vma) {
86  vma = kzalloc(sizeof(*vma), GFP_KERNEL);
87  if (!vma) {
88  ret = -ENOMEM;
89  goto out;
90  }
91 
92  ret = nouveau_bo_vma_add(nvbo, cli->base.vm, vma);
93  if (ret) {
94  kfree(vma);
95  goto out;
96  }
97  } else {
98  vma->refcount++;
99  }
100 
101 out:
102  ttm_bo_unreserve(&nvbo->bo);
103  return ret;
104 }
105 
106 void
107 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
108 {
109  struct nouveau_cli *cli = nouveau_cli(file_priv);
110  struct nouveau_bo *nvbo = nouveau_gem_object(gem);
111  struct nouveau_vma *vma;
112  int ret;
113 
114  if (!cli->base.vm)
115  return;
116 
117  ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
118  if (ret)
119  return;
120 
121  vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
122  if (vma) {
123  if (--vma->refcount == 0) {
124  nouveau_bo_vma_del(nvbo, vma);
125  kfree(vma);
126  }
127  }
128  ttm_bo_unreserve(&nvbo->bo);
129 }
130 
131 int
132 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
133  uint32_t tile_mode, uint32_t tile_flags,
134  struct nouveau_bo **pnvbo)
135 {
136  struct nouveau_drm *drm = nouveau_drm(dev);
137  struct nouveau_bo *nvbo;
138  u32 flags = 0;
139  int ret;
140 
141  if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
142  flags |= TTM_PL_FLAG_VRAM;
143  if (domain & NOUVEAU_GEM_DOMAIN_GART)
144  flags |= TTM_PL_FLAG_TT;
145  if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
146  flags |= TTM_PL_FLAG_SYSTEM;
147 
148  ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
149  tile_flags, NULL, pnvbo);
150  if (ret)
151  return ret;
152  nvbo = *pnvbo;
153 
154  /* we restrict allowed domains on nv50+ to only the types
155  * that were requested at creation time. not possibly on
156  * earlier chips without busting the ABI.
157  */
158  nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
159  NOUVEAU_GEM_DOMAIN_GART;
160  if (nv_device(drm->device)->card_type >= NV_50)
161  nvbo->valid_domains &= domain;
162 
163  nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
164  if (!nvbo->gem) {
165  nouveau_bo_ref(NULL, pnvbo);
166  return -ENOMEM;
167  }
168 
169  nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
170  nvbo->gem->driver_private = nvbo;
171  return 0;
172 }
173 
174 static int
175 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
176  struct drm_nouveau_gem_info *rep)
177 {
178  struct nouveau_cli *cli = nouveau_cli(file_priv);
179  struct nouveau_bo *nvbo = nouveau_gem_object(gem);
180  struct nouveau_vma *vma;
181 
182  if (nvbo->bo.mem.mem_type == TTM_PL_TT)
183  rep->domain = NOUVEAU_GEM_DOMAIN_GART;
184  else
185  rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
186 
187  rep->offset = nvbo->bo.offset;
188  if (cli->base.vm) {
189  vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
190  if (!vma)
191  return -EINVAL;
192 
193  rep->offset = vma->offset;
194  }
195 
196  rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
197  rep->map_handle = nvbo->bo.addr_space_offset;
198  rep->tile_mode = nvbo->tile_mode;
199  rep->tile_flags = nvbo->tile_flags;
200  return 0;
201 }
202 
203 int
204 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
205  struct drm_file *file_priv)
206 {
207  struct nouveau_drm *drm = nouveau_drm(dev);
208  struct nouveau_fb *pfb = nouveau_fb(drm->device);
209  struct drm_nouveau_gem_new *req = data;
210  struct nouveau_bo *nvbo = NULL;
211  int ret = 0;
212 
213  drm->ttm.bdev.dev_mapping = drm->dev->dev_mapping;
214 
215  if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
216  NV_ERROR(drm, "bad page flags: 0x%08x\n", req->info.tile_flags);
217  return -EINVAL;
218  }
219 
220  ret = nouveau_gem_new(dev, req->info.size, req->align,
221  req->info.domain, req->info.tile_mode,
222  req->info.tile_flags, &nvbo);
223  if (ret)
224  return ret;
225 
226  ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
227  if (ret == 0) {
228  ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
229  if (ret)
230  drm_gem_handle_delete(file_priv, req->info.handle);
231  }
232 
233  /* drop reference from allocate - handle holds it now */
234  drm_gem_object_unreference_unlocked(nvbo->gem);
235  return ret;
236 }
237 
238 static int
239 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
240  uint32_t write_domains, uint32_t valid_domains)
241 {
242  struct nouveau_bo *nvbo = gem->driver_private;
243  struct ttm_buffer_object *bo = &nvbo->bo;
244  uint32_t domains = valid_domains & nvbo->valid_domains &
245  (write_domains ? write_domains : read_domains);
246  uint32_t pref_flags = 0, valid_flags = 0;
247 
248  if (!domains)
249  return -EINVAL;
250 
251  if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
252  valid_flags |= TTM_PL_FLAG_VRAM;
253 
254  if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
255  valid_flags |= TTM_PL_FLAG_TT;
256 
257  if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
258  bo->mem.mem_type == TTM_PL_VRAM)
259  pref_flags |= TTM_PL_FLAG_VRAM;
260 
261  else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
262  bo->mem.mem_type == TTM_PL_TT)
263  pref_flags |= TTM_PL_FLAG_TT;
264 
265  else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
266  pref_flags |= TTM_PL_FLAG_VRAM;
267 
268  else
269  pref_flags |= TTM_PL_FLAG_TT;
270 
271  nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
272 
273  return 0;
274 }
275 
276 struct validate_op {
277  struct list_head vram_list;
278  struct list_head gart_list;
279  struct list_head both_list;
280 };
281 
282 static void
283 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
284 {
285  struct list_head *entry, *tmp;
286  struct nouveau_bo *nvbo;
287 
288  list_for_each_safe(entry, tmp, list) {
289  nvbo = list_entry(entry, struct nouveau_bo, entry);
290 
291  nouveau_bo_fence(nvbo, fence);
292 
293  if (unlikely(nvbo->validate_mapped)) {
294  ttm_bo_kunmap(&nvbo->kmap);
295  nvbo->validate_mapped = false;
296  }
297 
298  list_del(&nvbo->entry);
299  nvbo->reserved_by = NULL;
300  ttm_bo_unreserve(&nvbo->bo);
301  drm_gem_object_unreference_unlocked(nvbo->gem);
302  }
303 }
304 
305 static void
306 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
307 {
308  validate_fini_list(&op->vram_list, fence);
309  validate_fini_list(&op->gart_list, fence);
310  validate_fini_list(&op->both_list, fence);
311 }
312 
313 static int
314 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
315  struct drm_nouveau_gem_pushbuf_bo *pbbo,
316  int nr_buffers, struct validate_op *op)
317 {
318  struct drm_device *dev = chan->drm->dev;
319  struct nouveau_drm *drm = nouveau_drm(dev);
320  uint32_t sequence;
321  int trycnt = 0;
322  int ret, i;
323 
324  sequence = atomic_add_return(1, &drm->ttm.validate_sequence);
325 retry:
326  if (++trycnt > 100000) {
327  NV_ERROR(drm, "%s failed and gave up.\n", __func__);
328  return -EINVAL;
329  }
330 
331  for (i = 0; i < nr_buffers; i++) {
332  struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
333  struct drm_gem_object *gem;
334  struct nouveau_bo *nvbo;
335 
336  gem = drm_gem_object_lookup(dev, file_priv, b->handle);
337  if (!gem) {
338  NV_ERROR(drm, "Unknown handle 0x%08x\n", b->handle);
339  validate_fini(op, NULL);
340  return -ENOENT;
341  }
342  nvbo = gem->driver_private;
343 
344  if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
345  NV_ERROR(drm, "multiple instances of buffer %d on "
346  "validation list\n", b->handle);
347  drm_gem_object_unreference_unlocked(gem);
348  validate_fini(op, NULL);
349  return -EINVAL;
350  }
351 
352  ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
353  if (ret) {
354  validate_fini(op, NULL);
355  if (unlikely(ret == -EAGAIN))
356  ret = ttm_bo_wait_unreserved(&nvbo->bo, true);
357  drm_gem_object_unreference_unlocked(gem);
358  if (unlikely(ret)) {
359  if (ret != -ERESTARTSYS)
360  NV_ERROR(drm, "fail reserve\n");
361  return ret;
362  }
363  goto retry;
364  }
365 
366  b->user_priv = (uint64_t)(unsigned long)nvbo;
367  nvbo->reserved_by = file_priv;
368  nvbo->pbbo_index = i;
369  if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
370  (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
371  list_add_tail(&nvbo->entry, &op->both_list);
372  else
373  if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
374  list_add_tail(&nvbo->entry, &op->vram_list);
375  else
376  if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
377  list_add_tail(&nvbo->entry, &op->gart_list);
378  else {
379  NV_ERROR(drm, "invalid valid domains: 0x%08x\n",
380  b->valid_domains);
381  list_add_tail(&nvbo->entry, &op->both_list);
382  validate_fini(op, NULL);
383  return -EINVAL;
384  }
385  }
386 
387  return 0;
388 }
389 
390 static int
391 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
392 {
393  struct nouveau_fence *fence = NULL;
394  int ret = 0;
395 
396  spin_lock(&nvbo->bo.bdev->fence_lock);
397  if (nvbo->bo.sync_obj)
398  fence = nouveau_fence_ref(nvbo->bo.sync_obj);
399  spin_unlock(&nvbo->bo.bdev->fence_lock);
400 
401  if (fence) {
402  ret = nouveau_fence_sync(fence, chan);
403  nouveau_fence_unref(&fence);
404  }
405 
406  return ret;
407 }
408 
409 static int
410 validate_list(struct nouveau_channel *chan, struct list_head *list,
411  struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
412 {
413  struct nouveau_drm *drm = chan->drm;
414  struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
415  (void __force __user *)(uintptr_t)user_pbbo_ptr;
416  struct nouveau_bo *nvbo;
417  int ret, relocs = 0;
418 
419  list_for_each_entry(nvbo, list, entry) {
420  struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
421 
422  ret = validate_sync(chan, nvbo);
423  if (unlikely(ret)) {
424  NV_ERROR(drm, "fail pre-validate sync\n");
425  return ret;
426  }
427 
428  ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
429  b->write_domains,
430  b->valid_domains);
431  if (unlikely(ret)) {
432  NV_ERROR(drm, "fail set_domain\n");
433  return ret;
434  }
435 
436  ret = nouveau_bo_validate(nvbo, true, false, false);
437  if (unlikely(ret)) {
438  if (ret != -ERESTARTSYS)
439  NV_ERROR(drm, "fail ttm_validate\n");
440  return ret;
441  }
442 
443  ret = validate_sync(chan, nvbo);
444  if (unlikely(ret)) {
445  NV_ERROR(drm, "fail post-validate sync\n");
446  return ret;
447  }
448 
449  if (nv_device(drm->device)->card_type < NV_50) {
450  if (nvbo->bo.offset == b->presumed.offset &&
451  ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
452  b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
453  (nvbo->bo.mem.mem_type == TTM_PL_TT &&
454  b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
455  continue;
456 
457  if (nvbo->bo.mem.mem_type == TTM_PL_TT)
458  b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
459  else
460  b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
461  b->presumed.offset = nvbo->bo.offset;
462  b->presumed.valid = 0;
463  relocs++;
464 
465  if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
466  &b->presumed, sizeof(b->presumed)))
467  return -EFAULT;
468  }
469  }
470 
471  return relocs;
472 }
473 
474 static int
475 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
476  struct drm_file *file_priv,
477  struct drm_nouveau_gem_pushbuf_bo *pbbo,
478  uint64_t user_buffers, int nr_buffers,
479  struct validate_op *op, int *apply_relocs)
480 {
481  struct nouveau_drm *drm = chan->drm;
482  int ret, relocs = 0;
483 
484  INIT_LIST_HEAD(&op->vram_list);
485  INIT_LIST_HEAD(&op->gart_list);
486  INIT_LIST_HEAD(&op->both_list);
487 
488  if (nr_buffers == 0)
489  return 0;
490 
491  ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
492  if (unlikely(ret)) {
493  if (ret != -ERESTARTSYS)
494  NV_ERROR(drm, "validate_init\n");
495  return ret;
496  }
497 
498  ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
499  if (unlikely(ret < 0)) {
500  if (ret != -ERESTARTSYS)
501  NV_ERROR(drm, "validate vram_list\n");
502  validate_fini(op, NULL);
503  return ret;
504  }
505  relocs += ret;
506 
507  ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
508  if (unlikely(ret < 0)) {
509  if (ret != -ERESTARTSYS)
510  NV_ERROR(drm, "validate gart_list\n");
511  validate_fini(op, NULL);
512  return ret;
513  }
514  relocs += ret;
515 
516  ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
517  if (unlikely(ret < 0)) {
518  if (ret != -ERESTARTSYS)
519  NV_ERROR(drm, "validate both_list\n");
520  validate_fini(op, NULL);
521  return ret;
522  }
523  relocs += ret;
524 
525  *apply_relocs = relocs;
526  return 0;
527 }
528 
529 static inline void *
530 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
531 {
532  void *mem;
533  void __user *userptr = (void __force __user *)(uintptr_t)user;
534 
535  mem = kmalloc(nmemb * size, GFP_KERNEL);
536  if (!mem)
537  return ERR_PTR(-ENOMEM);
538 
539  if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
540  kfree(mem);
541  return ERR_PTR(-EFAULT);
542  }
543 
544  return mem;
545 }
546 
547 static int
548 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
549  struct drm_nouveau_gem_pushbuf *req,
550  struct drm_nouveau_gem_pushbuf_bo *bo)
551 {
552  struct nouveau_drm *drm = nouveau_drm(dev);
553  struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
554  int ret = 0;
555  unsigned i;
556 
557  reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
558  if (IS_ERR(reloc))
559  return PTR_ERR(reloc);
560 
561  for (i = 0; i < req->nr_relocs; i++) {
562  struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
563  struct drm_nouveau_gem_pushbuf_bo *b;
564  struct nouveau_bo *nvbo;
565  uint32_t data;
566 
567  if (unlikely(r->bo_index > req->nr_buffers)) {
568  NV_ERROR(drm, "reloc bo index invalid\n");
569  ret = -EINVAL;
570  break;
571  }
572 
573  b = &bo[r->bo_index];
574  if (b->presumed.valid)
575  continue;
576 
577  if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
578  NV_ERROR(drm, "reloc container bo index invalid\n");
579  ret = -EINVAL;
580  break;
581  }
582  nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
583 
584  if (unlikely(r->reloc_bo_offset + 4 >
585  nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
586  NV_ERROR(drm, "reloc outside of bo\n");
587  ret = -EINVAL;
588  break;
589  }
590 
591  if (!nvbo->kmap.virtual) {
592  ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
593  &nvbo->kmap);
594  if (ret) {
595  NV_ERROR(drm, "failed kmap for reloc\n");
596  break;
597  }
598  nvbo->validate_mapped = true;
599  }
600 
601  if (r->flags & NOUVEAU_GEM_RELOC_LOW)
602  data = b->presumed.offset + r->data;
603  else
604  if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
605  data = (b->presumed.offset + r->data) >> 32;
606  else
607  data = r->data;
608 
609  if (r->flags & NOUVEAU_GEM_RELOC_OR) {
610  if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
611  data |= r->tor;
612  else
613  data |= r->vor;
614  }
615 
616  spin_lock(&nvbo->bo.bdev->fence_lock);
617  ret = ttm_bo_wait(&nvbo->bo, false, false, false);
618  spin_unlock(&nvbo->bo.bdev->fence_lock);
619  if (ret) {
620  NV_ERROR(drm, "reloc wait_idle failed: %d\n", ret);
621  break;
622  }
623 
624  nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
625  }
626 
627  kfree(reloc);
628  return ret;
629 }
630 
631 int
632 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
633  struct drm_file *file_priv)
634 {
635  struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
636  struct nouveau_abi16_chan *temp;
637  struct nouveau_drm *drm = nouveau_drm(dev);
638  struct drm_nouveau_gem_pushbuf *req = data;
639  struct drm_nouveau_gem_pushbuf_push *push;
640  struct drm_nouveau_gem_pushbuf_bo *bo;
641  struct nouveau_channel *chan = NULL;
642  struct validate_op op;
643  struct nouveau_fence *fence = NULL;
644  int i, j, ret = 0, do_reloc = 0;
645 
646  if (unlikely(!abi16))
647  return -ENOMEM;
648 
649  list_for_each_entry(temp, &abi16->channels, head) {
650  if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
651  chan = temp->chan;
652  break;
653  }
654  }
655 
656  if (!chan)
657  return nouveau_abi16_put(abi16, -ENOENT);
658 
659  req->vram_available = drm->gem.vram_available;
660  req->gart_available = drm->gem.gart_available;
661  if (unlikely(req->nr_push == 0))
662  goto out_next;
663 
664  if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
665  NV_ERROR(drm, "pushbuf push count exceeds limit: %d max %d\n",
666  req->nr_push, NOUVEAU_GEM_MAX_PUSH);
667  return nouveau_abi16_put(abi16, -EINVAL);
668  }
669 
670  if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
671  NV_ERROR(drm, "pushbuf bo count exceeds limit: %d max %d\n",
672  req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
673  return nouveau_abi16_put(abi16, -EINVAL);
674  }
675 
676  if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
677  NV_ERROR(drm, "pushbuf reloc count exceeds limit: %d max %d\n",
678  req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
679  return nouveau_abi16_put(abi16, -EINVAL);
680  }
681 
682  push = u_memcpya(req->push, req->nr_push, sizeof(*push));
683  if (IS_ERR(push))
684  return nouveau_abi16_put(abi16, PTR_ERR(push));
685 
686  bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
687  if (IS_ERR(bo)) {
688  kfree(push);
689  return nouveau_abi16_put(abi16, PTR_ERR(bo));
690  }
691 
692  /* Ensure all push buffers are on validate list */
693  for (i = 0; i < req->nr_push; i++) {
694  if (push[i].bo_index >= req->nr_buffers) {
695  NV_ERROR(drm, "push %d buffer not in list\n", i);
696  ret = -EINVAL;
697  goto out_prevalid;
698  }
699  }
700 
701  /* Validate buffer list */
702  ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
703  req->nr_buffers, &op, &do_reloc);
704  if (ret) {
705  if (ret != -ERESTARTSYS)
706  NV_ERROR(drm, "validate: %d\n", ret);
707  goto out_prevalid;
708  }
709 
710  /* Apply any relocations that are required */
711  if (do_reloc) {
712  ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
713  if (ret) {
714  NV_ERROR(drm, "reloc apply: %d\n", ret);
715  goto out;
716  }
717  }
718 
719  if (chan->dma.ib_max) {
720  ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
721  if (ret) {
722  NV_ERROR(drm, "nv50cal_space: %d\n", ret);
723  goto out;
724  }
725 
726  for (i = 0; i < req->nr_push; i++) {
727  struct nouveau_bo *nvbo = (void *)(unsigned long)
728  bo[push[i].bo_index].user_priv;
729 
730  nv50_dma_push(chan, nvbo, push[i].offset,
731  push[i].length);
732  }
733  } else
734  if (nv_device(drm->device)->chipset >= 0x25) {
735  ret = RING_SPACE(chan, req->nr_push * 2);
736  if (ret) {
737  NV_ERROR(drm, "cal_space: %d\n", ret);
738  goto out;
739  }
740 
741  for (i = 0; i < req->nr_push; i++) {
742  struct nouveau_bo *nvbo = (void *)(unsigned long)
743  bo[push[i].bo_index].user_priv;
744 
745  OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
746  OUT_RING(chan, 0);
747  }
748  } else {
749  ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
750  if (ret) {
751  NV_ERROR(drm, "jmp_space: %d\n", ret);
752  goto out;
753  }
754 
755  for (i = 0; i < req->nr_push; i++) {
756  struct nouveau_bo *nvbo = (void *)(unsigned long)
757  bo[push[i].bo_index].user_priv;
758  uint32_t cmd;
759 
760  cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
761  cmd |= 0x20000000;
762  if (unlikely(cmd != req->suffix0)) {
763  if (!nvbo->kmap.virtual) {
764  ret = ttm_bo_kmap(&nvbo->bo, 0,
765  nvbo->bo.mem.
766  num_pages,
767  &nvbo->kmap);
768  if (ret) {
769  WIND_RING(chan);
770  goto out;
771  }
772  nvbo->validate_mapped = true;
773  }
774 
775  nouveau_bo_wr32(nvbo, (push[i].offset +
776  push[i].length - 8) / 4, cmd);
777  }
778 
779  OUT_RING(chan, 0x20000000 |
780  (nvbo->bo.offset + push[i].offset));
781  OUT_RING(chan, 0);
782  for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
783  OUT_RING(chan, 0);
784  }
785  }
786 
787  ret = nouveau_fence_new(chan, &fence);
788  if (ret) {
789  NV_ERROR(drm, "error fencing pushbuf: %d\n", ret);
790  WIND_RING(chan);
791  goto out;
792  }
793 
794 out:
795  validate_fini(&op, fence);
796  nouveau_fence_unref(&fence);
797 
798 out_prevalid:
799  kfree(bo);
800  kfree(push);
801 
802 out_next:
803  if (chan->dma.ib_max) {
804  req->suffix0 = 0x00000000;
805  req->suffix1 = 0x00000000;
806  } else
807  if (nv_device(drm->device)->chipset >= 0x25) {
808  req->suffix0 = 0x00020000;
809  req->suffix1 = 0x00000000;
810  } else {
811  req->suffix0 = 0x20000000 |
812  (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
813  req->suffix1 = 0x00000000;
814  }
815 
816  return nouveau_abi16_put(abi16, ret);
817 }
818 
819 static inline uint32_t
820 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
821 {
822  uint32_t flags = 0;
823 
824  if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
825  flags |= TTM_PL_FLAG_VRAM;
826  if (domain & NOUVEAU_GEM_DOMAIN_GART)
827  flags |= TTM_PL_FLAG_TT;
828 
829  return flags;
830 }
831 
832 int
833 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
834  struct drm_file *file_priv)
835 {
836  struct drm_nouveau_gem_cpu_prep *req = data;
837  struct drm_gem_object *gem;
838  struct nouveau_bo *nvbo;
839  bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
840  int ret = -EINVAL;
841 
842  gem = drm_gem_object_lookup(dev, file_priv, req->handle);
843  if (!gem)
844  return -ENOENT;
845  nvbo = nouveau_gem_object(gem);
846 
847  spin_lock(&nvbo->bo.bdev->fence_lock);
848  ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
849  spin_unlock(&nvbo->bo.bdev->fence_lock);
850  drm_gem_object_unreference_unlocked(gem);
851  return ret;
852 }
853 
854 int
855 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
856  struct drm_file *file_priv)
857 {
858  return 0;
859 }
860 
861 int
862 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
863  struct drm_file *file_priv)
864 {
865  struct drm_nouveau_gem_info *req = data;
866  struct drm_gem_object *gem;
867  int ret;
868 
869  gem = drm_gem_object_lookup(dev, file_priv, req->handle);
870  if (!gem)
871  return -ENOENT;
872 
873  ret = nouveau_gem_info(file_priv, gem, req);
874  drm_gem_object_unreference_unlocked(gem);
875  return ret;
876 }
877 
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