Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6.git] / drivers / gpu / drm / nouveau / nouveau_gem.c
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 #include "drmP.h"
27 #include "drm.h"
28
29 #include "nouveau_drv.h"
30 #include "nouveau_drm.h"
31 #include "nouveau_dma.h"
32
33 #define nouveau_gem_pushbuf_sync(chan) 0
34
35 int
36 nouveau_gem_object_new(struct drm_gem_object *gem)
37 {
38         return 0;
39 }
40
41 void
42 nouveau_gem_object_del(struct drm_gem_object *gem)
43 {
44         struct nouveau_bo *nvbo = gem->driver_private;
45         struct ttm_buffer_object *bo = &nvbo->bo;
46
47         if (!nvbo)
48                 return;
49         nvbo->gem = NULL;
50
51         if (unlikely(nvbo->cpu_filp))
52                 ttm_bo_synccpu_write_release(bo);
53
54         if (unlikely(nvbo->pin_refcnt)) {
55                 nvbo->pin_refcnt = 1;
56                 nouveau_bo_unpin(nvbo);
57         }
58
59         ttm_bo_unref(&bo);
60 }
61
62 int
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)
67 {
68         struct nouveau_bo *nvbo;
69         int ret;
70
71         ret = nouveau_bo_new(dev, chan, size, align, flags, tile_mode,
72                              tile_flags, no_vm, mappable, pnvbo);
73         if (ret)
74                 return ret;
75         nvbo = *pnvbo;
76
77         nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
78         if (!nvbo->gem) {
79                 nouveau_bo_ref(NULL, pnvbo);
80                 return -ENOMEM;
81         }
82
83         nvbo->bo.persistant_swap_storage = nvbo->gem->filp;
84         nvbo->gem->driver_private = nvbo;
85         return 0;
86 }
87
88 static int
89 nouveau_gem_info(struct drm_gem_object *gem, struct drm_nouveau_gem_info *rep)
90 {
91         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
92
93         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
94                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
95         else
96                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
97
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;
103         return 0;
104 }
105
106 static bool
107 nouveau_gem_tile_flags_valid(struct drm_device *dev, uint32_t tile_flags) {
108         switch (tile_flags) {
109         case 0x0000:
110         case 0x1800:
111         case 0x2800:
112         case 0x4800:
113         case 0x7000:
114         case 0x7400:
115         case 0x7a00:
116         case 0xe000:
117                 break;
118         default:
119                 NV_ERROR(dev, "bad page flags: 0x%08x\n", tile_flags);
120                 return false;
121         }
122
123         return true;
124 }
125
126 int
127 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
128                       struct drm_file *file_priv)
129 {
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;
134         uint32_t flags = 0;
135         int ret = 0;
136
137         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
138
139         if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL))
140                 dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping;
141
142         if (req->channel_hint) {
143                 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel_hint,
144                                                      file_priv, chan);
145         }
146
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;
153
154         if (!nouveau_gem_tile_flags_valid(dev, req->info.tile_flags))
155                 return -EINVAL;
156
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),
160                               &nvbo);
161         if (ret)
162                 return ret;
163
164         ret = nouveau_gem_info(nvbo->gem, &req->info);
165         if (ret)
166                 goto out;
167
168         ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
169 out:
170         drm_gem_object_handle_unreference_unlocked(nvbo->gem);
171
172         if (ret)
173                 drm_gem_object_unreference_unlocked(nvbo->gem);
174         return ret;
175 }
176
177 static int
178 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
179                        uint32_t write_domains, uint32_t valid_domains)
180 {
181         struct nouveau_bo *nvbo = gem->driver_private;
182         struct ttm_buffer_object *bo = &nvbo->bo;
183         uint64_t flags;
184
185         if (!valid_domains || (!read_domains && !write_domains))
186                 return -EINVAL;
187
188         if (write_domains) {
189                 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
190                     (write_domains & NOUVEAU_GEM_DOMAIN_VRAM))
191                         flags = TTM_PL_FLAG_VRAM;
192                 else
193                 if ((valid_domains & NOUVEAU_GEM_DOMAIN_GART) &&
194                     (write_domains & NOUVEAU_GEM_DOMAIN_GART))
195                         flags = TTM_PL_FLAG_TT;
196                 else
197                         return -EINVAL;
198         } else {
199                 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
200                     (read_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
201                     bo->mem.mem_type == TTM_PL_VRAM)
202                         flags = TTM_PL_FLAG_VRAM;
203                 else
204                 if ((valid_domains & NOUVEAU_GEM_DOMAIN_GART) &&
205                     (read_domains & NOUVEAU_GEM_DOMAIN_GART) &&
206                     bo->mem.mem_type == TTM_PL_TT)
207                         flags = TTM_PL_FLAG_TT;
208                 else
209                 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
210                     (read_domains & NOUVEAU_GEM_DOMAIN_VRAM))
211                         flags = TTM_PL_FLAG_VRAM;
212                 else
213                         flags = TTM_PL_FLAG_TT;
214         }
215
216         nouveau_bo_placement_set(nvbo, flags);
217         return 0;
218 }
219
220 struct validate_op {
221         struct list_head vram_list;
222         struct list_head gart_list;
223         struct list_head both_list;
224 };
225
226 static void
227 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
228 {
229         struct list_head *entry, *tmp;
230         struct nouveau_bo *nvbo;
231
232         list_for_each_safe(entry, tmp, list) {
233                 nvbo = list_entry(entry, struct nouveau_bo, entry);
234                 if (likely(fence)) {
235                         struct nouveau_fence *prev_fence;
236
237                         spin_lock(&nvbo->bo.lock);
238                         prev_fence = nvbo->bo.sync_obj;
239                         nvbo->bo.sync_obj = nouveau_fence_ref(fence);
240                         spin_unlock(&nvbo->bo.lock);
241                         nouveau_fence_unref((void *)&prev_fence);
242                 }
243
244                 if (unlikely(nvbo->validate_mapped)) {
245                         ttm_bo_kunmap(&nvbo->kmap);
246                         nvbo->validate_mapped = false;
247                 }
248
249                 list_del(&nvbo->entry);
250                 nvbo->reserved_by = NULL;
251                 ttm_bo_unreserve(&nvbo->bo);
252                 drm_gem_object_unreference(nvbo->gem);
253         }
254 }
255
256 static void
257 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
258 {
259         validate_fini_list(&op->vram_list, fence);
260         validate_fini_list(&op->gart_list, fence);
261         validate_fini_list(&op->both_list, fence);
262 }
263
264 static int
265 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
266               struct drm_nouveau_gem_pushbuf_bo *pbbo,
267               int nr_buffers, struct validate_op *op)
268 {
269         struct drm_device *dev = chan->dev;
270         struct drm_nouveau_private *dev_priv = dev->dev_private;
271         uint32_t sequence;
272         int trycnt = 0;
273         int ret, i;
274
275         sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
276 retry:
277         if (++trycnt > 100000) {
278                 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
279                 return -EINVAL;
280         }
281
282         for (i = 0; i < nr_buffers; i++) {
283                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
284                 struct drm_gem_object *gem;
285                 struct nouveau_bo *nvbo;
286
287                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
288                 if (!gem) {
289                         NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
290                         validate_fini(op, NULL);
291                         return -EINVAL;
292                 }
293                 nvbo = gem->driver_private;
294
295                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
296                         NV_ERROR(dev, "multiple instances of buffer %d on "
297                                       "validation list\n", b->handle);
298                         validate_fini(op, NULL);
299                         return -EINVAL;
300                 }
301
302                 ret = ttm_bo_reserve(&nvbo->bo, false, false, true, sequence);
303                 if (ret) {
304                         validate_fini(op, NULL);
305                         if (ret == -EAGAIN)
306                                 ret = ttm_bo_wait_unreserved(&nvbo->bo, false);
307                         drm_gem_object_unreference(gem);
308                         if (ret) {
309                                 NV_ERROR(dev, "fail reserve\n");
310                                 return ret;
311                         }
312                         goto retry;
313                 }
314
315                 b->user_priv = (uint64_t)(unsigned long)nvbo;
316                 nvbo->reserved_by = file_priv;
317                 nvbo->pbbo_index = i;
318                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
319                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
320                         list_add_tail(&nvbo->entry, &op->both_list);
321                 else
322                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
323                         list_add_tail(&nvbo->entry, &op->vram_list);
324                 else
325                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
326                         list_add_tail(&nvbo->entry, &op->gart_list);
327                 else {
328                         NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
329                                  b->valid_domains);
330                         list_add_tail(&nvbo->entry, &op->both_list);
331                         validate_fini(op, NULL);
332                         return -EINVAL;
333                 }
334
335                 if (unlikely(atomic_read(&nvbo->bo.cpu_writers) > 0)) {
336                         validate_fini(op, NULL);
337
338                         if (nvbo->cpu_filp == file_priv) {
339                                 NV_ERROR(dev, "bo %p mapped by process trying "
340                                               "to validate it!\n", nvbo);
341                                 return -EINVAL;
342                         }
343
344                         ret = ttm_bo_wait_cpu(&nvbo->bo, false);
345                         if (ret) {
346                                 NV_ERROR(dev, "fail wait_cpu\n");
347                                 return ret;
348                         }
349                         goto retry;
350                 }
351         }
352
353         return 0;
354 }
355
356 static int
357 validate_list(struct nouveau_channel *chan, struct list_head *list,
358               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
359 {
360         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
361                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
362         struct drm_device *dev = chan->dev;
363         struct nouveau_bo *nvbo;
364         int ret, relocs = 0;
365
366         list_for_each_entry(nvbo, list, entry) {
367                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
368                 struct nouveau_fence *prev_fence = nvbo->bo.sync_obj;
369
370                 if (prev_fence && nouveau_fence_channel(prev_fence) != chan) {
371                         spin_lock(&nvbo->bo.lock);
372                         ret = ttm_bo_wait(&nvbo->bo, false, false, false);
373                         spin_unlock(&nvbo->bo.lock);
374                         if (unlikely(ret)) {
375                                 NV_ERROR(dev, "fail wait other chan\n");
376                                 return ret;
377                         }
378                 }
379
380                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
381                                              b->write_domains,
382                                              b->valid_domains);
383                 if (unlikely(ret)) {
384                         NV_ERROR(dev, "fail set_domain\n");
385                         return ret;
386                 }
387
388                 nvbo->channel = chan;
389                 ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement,
390                                       false, false);
391                 nvbo->channel = NULL;
392                 if (unlikely(ret)) {
393                         NV_ERROR(dev, "fail ttm_validate\n");
394                         return ret;
395                 }
396
397                 if (nvbo->bo.offset == b->presumed.offset &&
398                     ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
399                       b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
400                      (nvbo->bo.mem.mem_type == TTM_PL_TT &&
401                       b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
402                         continue;
403
404                 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
405                         b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
406                 else
407                         b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
408                 b->presumed.offset = nvbo->bo.offset;
409                 b->presumed.valid = 0;
410                 relocs++;
411
412                 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
413                                      &b->presumed, sizeof(b->presumed)))
414                         return -EFAULT;
415         }
416
417         return relocs;
418 }
419
420 static int
421 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
422                              struct drm_file *file_priv,
423                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
424                              uint64_t user_buffers, int nr_buffers,
425                              struct validate_op *op, int *apply_relocs)
426 {
427         struct drm_device *dev = chan->dev;
428         int ret, relocs = 0;
429
430         INIT_LIST_HEAD(&op->vram_list);
431         INIT_LIST_HEAD(&op->gart_list);
432         INIT_LIST_HEAD(&op->both_list);
433
434         if (nr_buffers == 0)
435                 return 0;
436
437         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
438         if (unlikely(ret)) {
439                 NV_ERROR(dev, "validate_init\n");
440                 return ret;
441         }
442
443         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
444         if (unlikely(ret < 0)) {
445                 NV_ERROR(dev, "validate vram_list\n");
446                 validate_fini(op, NULL);
447                 return ret;
448         }
449         relocs += ret;
450
451         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
452         if (unlikely(ret < 0)) {
453                 NV_ERROR(dev, "validate gart_list\n");
454                 validate_fini(op, NULL);
455                 return ret;
456         }
457         relocs += ret;
458
459         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
460         if (unlikely(ret < 0)) {
461                 NV_ERROR(dev, "validate both_list\n");
462                 validate_fini(op, NULL);
463                 return ret;
464         }
465         relocs += ret;
466
467         *apply_relocs = relocs;
468         return 0;
469 }
470
471 static inline void *
472 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
473 {
474         void *mem;
475         void __user *userptr = (void __force __user *)(uintptr_t)user;
476
477         mem = kmalloc(nmemb * size, GFP_KERNEL);
478         if (!mem)
479                 return ERR_PTR(-ENOMEM);
480
481         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
482                 kfree(mem);
483                 return ERR_PTR(-EFAULT);
484         }
485
486         return mem;
487 }
488
489 static int
490 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
491                                 struct drm_nouveau_gem_pushbuf *req,
492                                 struct drm_nouveau_gem_pushbuf_bo *bo)
493 {
494         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
495         int ret = 0;
496         unsigned i;
497
498         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
499         if (IS_ERR(reloc))
500                 return PTR_ERR(reloc);
501
502         for (i = 0; i < req->nr_relocs; i++) {
503                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
504                 struct drm_nouveau_gem_pushbuf_bo *b;
505                 struct nouveau_bo *nvbo;
506                 uint32_t data;
507
508                 if (unlikely(r->bo_index > req->nr_buffers)) {
509                         NV_ERROR(dev, "reloc bo index invalid\n");
510                         ret = -EINVAL;
511                         break;
512                 }
513
514                 b = &bo[r->bo_index];
515                 if (b->presumed.valid)
516                         continue;
517
518                 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
519                         NV_ERROR(dev, "reloc container bo index invalid\n");
520                         ret = -EINVAL;
521                         break;
522                 }
523                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
524
525                 if (unlikely(r->reloc_bo_offset + 4 >
526                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
527                         NV_ERROR(dev, "reloc outside of bo\n");
528                         ret = -EINVAL;
529                         break;
530                 }
531
532                 if (!nvbo->kmap.virtual) {
533                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
534                                           &nvbo->kmap);
535                         if (ret) {
536                                 NV_ERROR(dev, "failed kmap for reloc\n");
537                                 break;
538                         }
539                         nvbo->validate_mapped = true;
540                 }
541
542                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
543                         data = b->presumed.offset + r->data;
544                 else
545                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
546                         data = (b->presumed.offset + r->data) >> 32;
547                 else
548                         data = r->data;
549
550                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
551                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
552                                 data |= r->tor;
553                         else
554                                 data |= r->vor;
555                 }
556
557                 spin_lock(&nvbo->bo.lock);
558                 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
559                 spin_unlock(&nvbo->bo.lock);
560                 if (ret) {
561                         NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret);
562                         break;
563                 }
564
565                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
566         }
567
568         kfree(reloc);
569         return ret;
570 }
571
572 int
573 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
574                           struct drm_file *file_priv)
575 {
576         struct drm_nouveau_private *dev_priv = dev->dev_private;
577         struct drm_nouveau_gem_pushbuf *req = data;
578         struct drm_nouveau_gem_pushbuf_push *push;
579         struct drm_nouveau_gem_pushbuf_bo *bo;
580         struct nouveau_channel *chan;
581         struct validate_op op;
582         struct nouveau_fence *fence = 0;
583         int i, j, ret = 0, do_reloc = 0;
584
585         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
586         NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
587
588         req->vram_available = dev_priv->fb_aper_free;
589         req->gart_available = dev_priv->gart_info.aper_free;
590         if (unlikely(req->nr_push == 0))
591                 goto out_next;
592
593         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
594                 NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n",
595                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
596                 return -EINVAL;
597         }
598
599         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
600                 NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n",
601                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
602                 return -EINVAL;
603         }
604
605         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
606                 NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n",
607                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
608                 return -EINVAL;
609         }
610
611         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
612         if (IS_ERR(push))
613                 return PTR_ERR(push);
614
615         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
616         if (IS_ERR(bo)) {
617                 kfree(push);
618                 return PTR_ERR(bo);
619         }
620
621         mutex_lock(&dev->struct_mutex);
622
623         /* Validate buffer list */
624         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
625                                            req->nr_buffers, &op, &do_reloc);
626         if (ret) {
627                 NV_ERROR(dev, "validate: %d\n", ret);
628                 goto out;
629         }
630
631         /* Apply any relocations that are required */
632         if (do_reloc) {
633                 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
634                 if (ret) {
635                         NV_ERROR(dev, "reloc apply: %d\n", ret);
636                         goto out;
637                 }
638         }
639
640         if (chan->dma.ib_max) {
641                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 6);
642                 if (ret) {
643                         NV_INFO(dev, "nv50cal_space: %d\n", ret);
644                         goto out;
645                 }
646
647                 for (i = 0; i < req->nr_push; i++) {
648                         struct nouveau_bo *nvbo = (void *)(unsigned long)
649                                 bo[push[i].bo_index].user_priv;
650
651                         nv50_dma_push(chan, nvbo, push[i].offset,
652                                       push[i].length);
653                 }
654         } else
655         if (dev_priv->card_type >= NV_20) {
656                 ret = RING_SPACE(chan, req->nr_push * 2);
657                 if (ret) {
658                         NV_ERROR(dev, "cal_space: %d\n", ret);
659                         goto out;
660                 }
661
662                 for (i = 0; i < req->nr_push; i++) {
663                         struct nouveau_bo *nvbo = (void *)(unsigned long)
664                                 bo[push[i].bo_index].user_priv;
665                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
666
667                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
668                                         push[i].offset) | 2);
669                         OUT_RING(chan, 0);
670                 }
671         } else {
672                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
673                 if (ret) {
674                         NV_ERROR(dev, "jmp_space: %d\n", ret);
675                         goto out;
676                 }
677
678                 for (i = 0; i < req->nr_push; i++) {
679                         struct nouveau_bo *nvbo = (void *)(unsigned long)
680                                 bo[push[i].bo_index].user_priv;
681                         struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
682                         uint32_t cmd;
683
684                         cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
685                         cmd |= 0x20000000;
686                         if (unlikely(cmd != req->suffix0)) {
687                                 if (!nvbo->kmap.virtual) {
688                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
689                                                           nvbo->bo.mem.
690                                                           num_pages,
691                                                           &nvbo->kmap);
692                                         if (ret) {
693                                                 WIND_RING(chan);
694                                                 goto out;
695                                         }
696                                         nvbo->validate_mapped = true;
697                                 }
698
699                                 nouveau_bo_wr32(nvbo, (push[i].offset +
700                                                 push[i].length - 8) / 4, cmd);
701                         }
702
703                         OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
704                                         push[i].offset) | 0x20000000);
705                         OUT_RING(chan, 0);
706                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
707                                 OUT_RING(chan, 0);
708                 }
709         }
710
711         ret = nouveau_fence_new(chan, &fence, true);
712         if (ret) {
713                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
714                 WIND_RING(chan);
715                 goto out;
716         }
717
718 out:
719         validate_fini(&op, fence);
720         nouveau_fence_unref((void**)&fence);
721         mutex_unlock(&dev->struct_mutex);
722         kfree(bo);
723         kfree(push);
724
725 out_next:
726         if (chan->dma.ib_max) {
727                 req->suffix0 = 0x00000000;
728                 req->suffix1 = 0x00000000;
729         } else
730         if (dev_priv->card_type >= NV_20) {
731                 req->suffix0 = 0x00020000;
732                 req->suffix1 = 0x00000000;
733         } else {
734                 req->suffix0 = 0x20000000 |
735                               (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
736                 req->suffix1 = 0x00000000;
737         }
738
739         return ret;
740 }
741
742 static inline uint32_t
743 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
744 {
745         uint32_t flags = 0;
746
747         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
748                 flags |= TTM_PL_FLAG_VRAM;
749         if (domain & NOUVEAU_GEM_DOMAIN_GART)
750                 flags |= TTM_PL_FLAG_TT;
751
752         return flags;
753 }
754
755 int
756 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
757                            struct drm_file *file_priv)
758 {
759         struct drm_nouveau_gem_cpu_prep *req = data;
760         struct drm_gem_object *gem;
761         struct nouveau_bo *nvbo;
762         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
763         int ret = -EINVAL;
764
765         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
766
767         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
768         if (!gem)
769                 return ret;
770         nvbo = nouveau_gem_object(gem);
771
772         if (nvbo->cpu_filp) {
773                 if (nvbo->cpu_filp == file_priv)
774                         goto out;
775
776                 ret = ttm_bo_wait_cpu(&nvbo->bo, no_wait);
777                 if (ret)
778                         goto out;
779         }
780
781         if (req->flags & NOUVEAU_GEM_CPU_PREP_NOBLOCK) {
782                 spin_lock(&nvbo->bo.lock);
783                 ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait);
784                 spin_unlock(&nvbo->bo.lock);
785         } else {
786                 ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait);
787                 if (ret == 0)
788                         nvbo->cpu_filp = file_priv;
789         }
790
791 out:
792         drm_gem_object_unreference_unlocked(gem);
793         return ret;
794 }
795
796 int
797 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
798                            struct drm_file *file_priv)
799 {
800         struct drm_nouveau_gem_cpu_prep *req = data;
801         struct drm_gem_object *gem;
802         struct nouveau_bo *nvbo;
803         int ret = -EINVAL;
804
805         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
806
807         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
808         if (!gem)
809                 return ret;
810         nvbo = nouveau_gem_object(gem);
811
812         if (nvbo->cpu_filp != file_priv)
813                 goto out;
814         nvbo->cpu_filp = NULL;
815
816         ttm_bo_synccpu_write_release(&nvbo->bo);
817         ret = 0;
818
819 out:
820         drm_gem_object_unreference_unlocked(gem);
821         return ret;
822 }
823
824 int
825 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
826                        struct drm_file *file_priv)
827 {
828         struct drm_nouveau_gem_info *req = data;
829         struct drm_gem_object *gem;
830         int ret;
831
832         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
833
834         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
835         if (!gem)
836                 return -EINVAL;
837
838         ret = nouveau_gem_info(gem, req);
839         drm_gem_object_unreference_unlocked(gem);
840         return ret;
841 }
842