Merge remote branch 'korg/drm-core-next' into drm-next-stage
[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                 list_del(&nvbo->entry);
245                 nvbo->reserved_by = NULL;
246                 ttm_bo_unreserve(&nvbo->bo);
247                 drm_gem_object_unreference(nvbo->gem);
248         }
249 }
250
251 static void
252 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
253 {
254         validate_fini_list(&op->vram_list, fence);
255         validate_fini_list(&op->gart_list, fence);
256         validate_fini_list(&op->both_list, fence);
257 }
258
259 static int
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)
263 {
264         struct drm_device *dev = chan->dev;
265         struct drm_nouveau_private *dev_priv = dev->dev_private;
266         uint32_t sequence;
267         int trycnt = 0;
268         int ret, i;
269
270         sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
271 retry:
272         if (++trycnt > 100000) {
273                 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
274                 return -EINVAL;
275         }
276
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;
281
282                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
283                 if (!gem) {
284                         NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
285                         validate_fini(op, NULL);
286                         return -EINVAL;
287                 }
288                 nvbo = gem->driver_private;
289
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);
294                         return -EINVAL;
295                 }
296
297                 ret = ttm_bo_reserve(&nvbo->bo, false, false, true, sequence);
298                 if (ret) {
299                         validate_fini(op, NULL);
300                         if (ret == -EAGAIN)
301                                 ret = ttm_bo_wait_unreserved(&nvbo->bo, false);
302                         drm_gem_object_unreference(gem);
303                         if (ret)
304                                 return ret;
305                         goto retry;
306                 }
307
308                 nvbo->reserved_by = file_priv;
309                 nvbo->pbbo_index = i;
310                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
311                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
312                         list_add_tail(&nvbo->entry, &op->both_list);
313                 else
314                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
315                         list_add_tail(&nvbo->entry, &op->vram_list);
316                 else
317                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
318                         list_add_tail(&nvbo->entry, &op->gart_list);
319                 else {
320                         NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
321                                  b->valid_domains);
322                         list_add_tail(&nvbo->entry, &op->both_list);
323                         validate_fini(op, NULL);
324                         return -EINVAL;
325                 }
326
327                 if (unlikely(atomic_read(&nvbo->bo.cpu_writers) > 0)) {
328                         validate_fini(op, NULL);
329
330                         if (nvbo->cpu_filp == file_priv) {
331                                 NV_ERROR(dev, "bo %p mapped by process trying "
332                                               "to validate it!\n", nvbo);
333                                 return -EINVAL;
334                         }
335
336                         ret = ttm_bo_wait_cpu(&nvbo->bo, false);
337                         if (ret)
338                                 return ret;
339                         goto retry;
340                 }
341         }
342
343         return 0;
344 }
345
346 static int
347 validate_list(struct nouveau_channel *chan, struct list_head *list,
348               struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
349 {
350         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
351                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
352         struct nouveau_bo *nvbo;
353         int ret, relocs = 0;
354
355         list_for_each_entry(nvbo, list, entry) {
356                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
357                 struct nouveau_fence *prev_fence = nvbo->bo.sync_obj;
358
359                 if (prev_fence && nouveau_fence_channel(prev_fence) != chan) {
360                         spin_lock(&nvbo->bo.lock);
361                         ret = ttm_bo_wait(&nvbo->bo, false, false, false);
362                         spin_unlock(&nvbo->bo.lock);
363                         if (unlikely(ret))
364                                 return ret;
365                 }
366
367                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
368                                              b->write_domains,
369                                              b->valid_domains);
370                 if (unlikely(ret))
371                         return ret;
372
373                 nvbo->channel = chan;
374                 ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement,
375                                       false, false);
376                 nvbo->channel = NULL;
377                 if (unlikely(ret))
378                         return ret;
379
380                 if (nvbo->bo.offset == b->presumed_offset &&
381                     ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
382                       b->presumed_domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
383                      (nvbo->bo.mem.mem_type == TTM_PL_TT &&
384                       b->presumed_domain & NOUVEAU_GEM_DOMAIN_GART)))
385                         continue;
386
387                 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
388                         b->presumed_domain = NOUVEAU_GEM_DOMAIN_GART;
389                 else
390                         b->presumed_domain = NOUVEAU_GEM_DOMAIN_VRAM;
391                 b->presumed_offset = nvbo->bo.offset;
392                 b->presumed_ok = 0;
393                 relocs++;
394
395                 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index], b, sizeof(*b)))
396                         return -EFAULT;
397         }
398
399         return relocs;
400 }
401
402 static int
403 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
404                              struct drm_file *file_priv,
405                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
406                              uint64_t user_buffers, int nr_buffers,
407                              struct validate_op *op, int *apply_relocs)
408 {
409         int ret, relocs = 0;
410
411         INIT_LIST_HEAD(&op->vram_list);
412         INIT_LIST_HEAD(&op->gart_list);
413         INIT_LIST_HEAD(&op->both_list);
414
415         if (nr_buffers == 0)
416                 return 0;
417
418         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
419         if (unlikely(ret))
420                 return ret;
421
422         ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
423         if (unlikely(ret < 0)) {
424                 validate_fini(op, NULL);
425                 return ret;
426         }
427         relocs += ret;
428
429         ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
430         if (unlikely(ret < 0)) {
431                 validate_fini(op, NULL);
432                 return ret;
433         }
434         relocs += ret;
435
436         ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
437         if (unlikely(ret < 0)) {
438                 validate_fini(op, NULL);
439                 return ret;
440         }
441         relocs += ret;
442
443         *apply_relocs = relocs;
444         return 0;
445 }
446
447 static inline void *
448 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
449 {
450         void *mem;
451         void __user *userptr = (void __force __user *)(uintptr_t)user;
452
453         mem = kmalloc(nmemb * size, GFP_KERNEL);
454         if (!mem)
455                 return ERR_PTR(-ENOMEM);
456
457         if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
458                 kfree(mem);
459                 return ERR_PTR(-EFAULT);
460         }
461
462         return mem;
463 }
464
465 static int
466 nouveau_gem_pushbuf_reloc_apply(struct nouveau_channel *chan, int nr_bo,
467                                 struct drm_nouveau_gem_pushbuf_bo *bo,
468                                 unsigned nr_relocs, uint64_t ptr_relocs,
469                                 unsigned nr_dwords, unsigned first_dword,
470                                 uint32_t *pushbuf, bool is_iomem)
471 {
472         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
473         struct drm_device *dev = chan->dev;
474         int ret = 0;
475         unsigned i;
476
477         reloc = u_memcpya(ptr_relocs, nr_relocs, sizeof(*reloc));
478         if (IS_ERR(reloc))
479                 return PTR_ERR(reloc);
480
481         for (i = 0; i < nr_relocs; i++) {
482                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
483                 struct drm_nouveau_gem_pushbuf_bo *b;
484                 uint32_t data;
485
486                 if (r->bo_index >= nr_bo || r->reloc_index < first_dword ||
487                     r->reloc_index >= first_dword + nr_dwords) {
488                         NV_ERROR(dev, "Bad relocation %d\n", i);
489                         NV_ERROR(dev, "  bo: %d max %d\n", r->bo_index, nr_bo);
490                         NV_ERROR(dev, "  id: %d max %d\n", r->reloc_index, nr_dwords);
491                         ret = -EINVAL;
492                         break;
493                 }
494
495                 b = &bo[r->bo_index];
496                 if (b->presumed_ok)
497                         continue;
498
499                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
500                         data = b->presumed_offset + r->data;
501                 else
502                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
503                         data = (b->presumed_offset + r->data) >> 32;
504                 else
505                         data = r->data;
506
507                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
508                         if (b->presumed_domain == NOUVEAU_GEM_DOMAIN_GART)
509                                 data |= r->tor;
510                         else
511                                 data |= r->vor;
512                 }
513
514                 if (is_iomem)
515                         iowrite32_native(data, (void __force __iomem *)
516                                                 &pushbuf[r->reloc_index]);
517                 else
518                         pushbuf[r->reloc_index] = data;
519         }
520
521         kfree(reloc);
522         return ret;
523 }
524
525 int
526 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
527                           struct drm_file *file_priv)
528 {
529         struct drm_nouveau_gem_pushbuf *req = data;
530         struct drm_nouveau_gem_pushbuf_bo *bo = NULL;
531         struct nouveau_channel *chan;
532         struct validate_op op;
533         struct nouveau_fence* fence = 0;
534         uint32_t *pushbuf = NULL;
535         int ret = 0, do_reloc = 0, i;
536
537         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
538         NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
539
540         if (req->nr_dwords >= chan->dma.max ||
541             req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS ||
542             req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) {
543                 NV_ERROR(dev, "Pushbuf config exceeds limits:\n");
544                 NV_ERROR(dev, "  dwords : %d max %d\n", req->nr_dwords,
545                          chan->dma.max - 1);
546                 NV_ERROR(dev, "  buffers: %d max %d\n", req->nr_buffers,
547                          NOUVEAU_GEM_MAX_BUFFERS);
548                 NV_ERROR(dev, "  relocs : %d max %d\n", req->nr_relocs,
549                          NOUVEAU_GEM_MAX_RELOCS);
550                 return -EINVAL;
551         }
552
553         pushbuf = u_memcpya(req->dwords, req->nr_dwords, sizeof(uint32_t));
554         if (IS_ERR(pushbuf))
555                 return PTR_ERR(pushbuf);
556
557         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
558         if (IS_ERR(bo)) {
559                 kfree(pushbuf);
560                 return PTR_ERR(bo);
561         }
562
563         mutex_lock(&dev->struct_mutex);
564
565         /* Validate buffer list */
566         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
567                                            req->nr_buffers, &op, &do_reloc);
568         if (ret)
569                 goto out;
570
571         /* Apply any relocations that are required */
572         if (do_reloc) {
573                 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers,
574                                                       bo, req->nr_relocs,
575                                                       req->relocs,
576                                                       req->nr_dwords, 0,
577                                                       pushbuf, false);
578                 if (ret)
579                         goto out;
580         }
581
582         /* Emit push buffer to the hw
583          */
584         ret = RING_SPACE(chan, req->nr_dwords);
585         if (ret)
586                 goto out;
587
588         OUT_RINGp(chan, pushbuf, req->nr_dwords);
589
590         ret = nouveau_fence_new(chan, &fence, true);
591         if (ret) {
592                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
593                 WIND_RING(chan);
594                 goto out;
595         }
596
597         if (nouveau_gem_pushbuf_sync(chan)) {
598                 ret = nouveau_fence_wait(fence, NULL, false, false);
599                 if (ret) {
600                         for (i = 0; i < req->nr_dwords; i++)
601                                 NV_ERROR(dev, "0x%08x\n", pushbuf[i]);
602                         NV_ERROR(dev, "^^ above push buffer is fail :(\n");
603                 }
604         }
605
606 out:
607         validate_fini(&op, fence);
608         nouveau_fence_unref((void**)&fence);
609         mutex_unlock(&dev->struct_mutex);
610         kfree(pushbuf);
611         kfree(bo);
612         return ret;
613 }
614
615 #define PUSHBUF_CAL (dev_priv->card_type >= NV_20)
616
617 int
618 nouveau_gem_ioctl_pushbuf_call(struct drm_device *dev, void *data,
619                                struct drm_file *file_priv)
620 {
621         struct drm_nouveau_private *dev_priv = dev->dev_private;
622         struct drm_nouveau_gem_pushbuf_call *req = data;
623         struct drm_nouveau_gem_pushbuf_bo *bo = NULL;
624         struct nouveau_channel *chan;
625         struct drm_gem_object *gem;
626         struct nouveau_bo *pbbo;
627         struct validate_op op;
628         struct nouveau_fence* fence = 0;
629         int i, ret = 0, do_reloc = 0;
630
631         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
632         NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
633
634         if (unlikely(req->handle == 0))
635                 goto out_next;
636
637         if (req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS ||
638             req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) {
639                 NV_ERROR(dev, "Pushbuf config exceeds limits:\n");
640                 NV_ERROR(dev, "  buffers: %d max %d\n", req->nr_buffers,
641                          NOUVEAU_GEM_MAX_BUFFERS);
642                 NV_ERROR(dev, "  relocs : %d max %d\n", req->nr_relocs,
643                          NOUVEAU_GEM_MAX_RELOCS);
644                 return -EINVAL;
645         }
646
647         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
648         if (IS_ERR(bo))
649                 return PTR_ERR(bo);
650
651         mutex_lock(&dev->struct_mutex);
652
653         /* Validate buffer list */
654         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
655                                            req->nr_buffers, &op, &do_reloc);
656         if (ret) {
657                 NV_ERROR(dev, "validate: %d\n", ret);
658                 goto out;
659         }
660
661         /* Validate DMA push buffer */
662         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
663         if (!gem) {
664                 NV_ERROR(dev, "Unknown pb handle 0x%08x\n", req->handle);
665                 ret = -EINVAL;
666                 goto out;
667         }
668         pbbo = nouveau_gem_object(gem);
669
670         if ((req->offset & 3) || req->nr_dwords < 2 ||
671             (unsigned long)req->offset > (unsigned long)pbbo->bo.mem.size ||
672             (unsigned long)req->nr_dwords >
673              ((unsigned long)(pbbo->bo.mem.size - req->offset ) >> 2)) {
674                 NV_ERROR(dev, "pb call misaligned or out of bounds: "
675                               "%d + %d * 4 > %ld\n",
676                          req->offset, req->nr_dwords, pbbo->bo.mem.size);
677                 ret = -EINVAL;
678                 drm_gem_object_unreference(gem);
679                 goto out;
680         }
681
682         ret = ttm_bo_reserve(&pbbo->bo, false, false, true,
683                              chan->fence.sequence);
684         if (ret) {
685                 NV_ERROR(dev, "resv pb: %d\n", ret);
686                 drm_gem_object_unreference(gem);
687                 goto out;
688         }
689
690         nouveau_bo_placement_set(pbbo, 1 << chan->pushbuf_bo->bo.mem.mem_type);
691         ret = ttm_bo_validate(&pbbo->bo, &pbbo->placement, false, false);
692         if (ret) {
693                 NV_ERROR(dev, "validate pb: %d\n", ret);
694                 ttm_bo_unreserve(&pbbo->bo);
695                 drm_gem_object_unreference(gem);
696                 goto out;
697         }
698
699         list_add_tail(&pbbo->entry, &op.both_list);
700
701         /* If presumed return address doesn't match, we need to map the
702          * push buffer and fix it..
703          */
704         if (!PUSHBUF_CAL) {
705                 uint32_t retaddy;
706
707                 if (chan->dma.free < 4 + NOUVEAU_DMA_SKIPS) {
708                         ret = nouveau_dma_wait(chan, 4 + NOUVEAU_DMA_SKIPS);
709                         if (ret) {
710                                 NV_ERROR(dev, "jmp_space: %d\n", ret);
711                                 goto out;
712                         }
713                 }
714
715                 retaddy  = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
716                 retaddy |= 0x20000000;
717                 if (retaddy != req->suffix0) {
718                         req->suffix0 = retaddy;
719                         do_reloc = 1;
720                 }
721         }
722
723         /* Apply any relocations that are required */
724         if (do_reloc) {
725                 void *pbvirt;
726                 bool is_iomem;
727                 ret = ttm_bo_kmap(&pbbo->bo, 0, pbbo->bo.mem.num_pages,
728                                   &pbbo->kmap);
729                 if (ret) {
730                         NV_ERROR(dev, "kmap pb: %d\n", ret);
731                         goto out;
732                 }
733
734                 pbvirt = ttm_kmap_obj_virtual(&pbbo->kmap, &is_iomem);
735                 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers, bo,
736                                                       req->nr_relocs,
737                                                       req->relocs,
738                                                       req->nr_dwords,
739                                                       req->offset / 4,
740                                                       pbvirt, is_iomem);
741
742                 if (!PUSHBUF_CAL) {
743                         nouveau_bo_wr32(pbbo,
744                                         req->offset / 4 + req->nr_dwords - 2,
745                                         req->suffix0);
746                 }
747
748                 ttm_bo_kunmap(&pbbo->kmap);
749                 if (ret) {
750                         NV_ERROR(dev, "reloc apply: %d\n", ret);
751                         goto out;
752                 }
753         }
754
755         if (PUSHBUF_CAL) {
756                 ret = RING_SPACE(chan, 2);
757                 if (ret) {
758                         NV_ERROR(dev, "cal_space: %d\n", ret);
759                         goto out;
760                 }
761                 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) +
762                                   req->offset) | 2);
763                 OUT_RING(chan, 0);
764         } else {
765                 ret = RING_SPACE(chan, 2 + NOUVEAU_DMA_SKIPS);
766                 if (ret) {
767                         NV_ERROR(dev, "jmp_space: %d\n", ret);
768                         goto out;
769                 }
770                 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) +
771                                   req->offset) | 0x20000000);
772                 OUT_RING(chan, 0);
773
774                 /* Space the jumps apart with NOPs. */
775                 for (i = 0; i < NOUVEAU_DMA_SKIPS; i++)
776                         OUT_RING(chan, 0);
777         }
778
779         ret = nouveau_fence_new(chan, &fence, true);
780         if (ret) {
781                 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
782                 WIND_RING(chan);
783                 goto out;
784         }
785
786 out:
787         validate_fini(&op, fence);
788         nouveau_fence_unref((void**)&fence);
789         mutex_unlock(&dev->struct_mutex);
790         kfree(bo);
791
792 out_next:
793         if (PUSHBUF_CAL) {
794                 req->suffix0 = 0x00020000;
795                 req->suffix1 = 0x00000000;
796         } else {
797                 req->suffix0 = 0x20000000 |
798                               (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
799                 req->suffix1 = 0x00000000;
800         }
801
802         return ret;
803 }
804
805 int
806 nouveau_gem_ioctl_pushbuf_call2(struct drm_device *dev, void *data,
807                                 struct drm_file *file_priv)
808 {
809         struct drm_nouveau_private *dev_priv = dev->dev_private;
810         struct drm_nouveau_gem_pushbuf_call *req = data;
811
812         req->vram_available = dev_priv->fb_aper_free;
813         req->gart_available = dev_priv->gart_info.aper_free;
814
815         return nouveau_gem_ioctl_pushbuf_call(dev, data, file_priv);
816 }
817
818 static inline uint32_t
819 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
820 {
821         uint32_t flags = 0;
822
823         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
824                 flags |= TTM_PL_FLAG_VRAM;
825         if (domain & NOUVEAU_GEM_DOMAIN_GART)
826                 flags |= TTM_PL_FLAG_TT;
827
828         return flags;
829 }
830
831 int
832 nouveau_gem_ioctl_pin(struct drm_device *dev, void *data,
833                       struct drm_file *file_priv)
834 {
835         struct drm_nouveau_gem_pin *req = data;
836         struct drm_gem_object *gem;
837         struct nouveau_bo *nvbo;
838         int ret = 0;
839
840         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
841
842         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
843                 NV_ERROR(dev, "pin only allowed without kernel modesetting\n");
844                 return -EINVAL;
845         }
846
847         if (!DRM_SUSER(DRM_CURPROC))
848                 return -EPERM;
849
850         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
851         if (!gem)
852                 return -EINVAL;
853         nvbo = nouveau_gem_object(gem);
854
855         ret = nouveau_bo_pin(nvbo, domain_to_ttm(nvbo, req->domain));
856         if (ret)
857                 goto out;
858
859         req->offset = nvbo->bo.offset;
860         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
861                 req->domain = NOUVEAU_GEM_DOMAIN_GART;
862         else
863                 req->domain = NOUVEAU_GEM_DOMAIN_VRAM;
864
865 out:
866         drm_gem_object_unreference_unlocked(gem);
867
868         return ret;
869 }
870
871 int
872 nouveau_gem_ioctl_unpin(struct drm_device *dev, void *data,
873                         struct drm_file *file_priv)
874 {
875         struct drm_nouveau_gem_pin *req = data;
876         struct drm_gem_object *gem;
877         int ret;
878
879         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
880
881         if (drm_core_check_feature(dev, DRIVER_MODESET))
882                 return -EINVAL;
883
884         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
885         if (!gem)
886                 return -EINVAL;
887
888         ret = nouveau_bo_unpin(nouveau_gem_object(gem));
889
890         drm_gem_object_unreference_unlocked(gem);
891
892         return ret;
893 }
894
895 int
896 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
897                            struct drm_file *file_priv)
898 {
899         struct drm_nouveau_gem_cpu_prep *req = data;
900         struct drm_gem_object *gem;
901         struct nouveau_bo *nvbo;
902         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
903         int ret = -EINVAL;
904
905         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
906
907         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
908         if (!gem)
909                 return ret;
910         nvbo = nouveau_gem_object(gem);
911
912         if (nvbo->cpu_filp) {
913                 if (nvbo->cpu_filp == file_priv)
914                         goto out;
915
916                 ret = ttm_bo_wait_cpu(&nvbo->bo, no_wait);
917                 if (ret)
918                         goto out;
919         }
920
921         if (req->flags & NOUVEAU_GEM_CPU_PREP_NOBLOCK) {
922                 spin_lock(&nvbo->bo.lock);
923                 ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait);
924                 spin_unlock(&nvbo->bo.lock);
925         } else {
926                 ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait);
927                 if (ret == 0)
928                         nvbo->cpu_filp = file_priv;
929         }
930
931 out:
932         drm_gem_object_unreference_unlocked(gem);
933         return ret;
934 }
935
936 int
937 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
938                            struct drm_file *file_priv)
939 {
940         struct drm_nouveau_gem_cpu_prep *req = data;
941         struct drm_gem_object *gem;
942         struct nouveau_bo *nvbo;
943         int ret = -EINVAL;
944
945         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
946
947         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
948         if (!gem)
949                 return ret;
950         nvbo = nouveau_gem_object(gem);
951
952         if (nvbo->cpu_filp != file_priv)
953                 goto out;
954         nvbo->cpu_filp = NULL;
955
956         ttm_bo_synccpu_write_release(&nvbo->bo);
957         ret = 0;
958
959 out:
960         drm_gem_object_unreference_unlocked(gem);
961         return ret;
962 }
963
964 int
965 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
966                        struct drm_file *file_priv)
967 {
968         struct drm_nouveau_gem_info *req = data;
969         struct drm_gem_object *gem;
970         int ret;
971
972         NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
973
974         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
975         if (!gem)
976                 return -EINVAL;
977
978         ret = nouveau_gem_info(gem, req);
979         drm_gem_object_unreference_unlocked(gem);
980         return ret;
981 }
982