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[S390] Remove error checking from copy_oldmem_page()
[linux/fpc-iii.git] / drivers / gpu / drm / nouveau / nouveau_gem.c
blob5f0bc57fdaab5e14f1c3bc9f6e049f02c43a5069
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->pin_refcnt)) {
52 nvbo->pin_refcnt = 1;
53 nouveau_bo_unpin(nvbo);
54 }
55
56 ttm_bo_unref(&bo);
57
58 drm_gem_object_release(gem);
59 kfree(gem);
60 }
61
62 int
63 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
64 {
65 struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
66 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
67 struct nouveau_vma *vma;
68 int ret;
69
70 if (!fpriv->vm)
71 return 0;
72
73 ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
74 if (ret)
75 return ret;
76
77 vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
78 if (!vma) {
79 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
80 if (!vma) {
81 ret = -ENOMEM;
82 goto out;
83 }
84
85 ret = nouveau_bo_vma_add(nvbo, fpriv->vm, vma);
86 if (ret) {
87 kfree(vma);
88 goto out;
89 }
90 } else {
91 vma->refcount++;
92 }
93
94 out:
95 ttm_bo_unreserve(&nvbo->bo);
96 return ret;
97 }
98
99 void
100 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
101 {
102 struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
103 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
104 struct nouveau_vma *vma;
105 int ret;
106
107 if (!fpriv->vm)
108 return;
109
110 ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
111 if (ret)
112 return;
113
114 vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
115 if (vma) {
116 if (--vma->refcount == 0) {
117 nouveau_bo_vma_del(nvbo, vma);
118 kfree(vma);
119 }
120 }
121 ttm_bo_unreserve(&nvbo->bo);
122 }
123
124 int
125 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
126 uint32_t tile_mode, uint32_t tile_flags,
127 struct nouveau_bo **pnvbo)
128 {
129 struct drm_nouveau_private *dev_priv = dev->dev_private;
130 struct nouveau_bo *nvbo;
131 u32 flags = 0;
132 int ret;
133
134 if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
135 flags |= TTM_PL_FLAG_VRAM;
136 if (domain & NOUVEAU_GEM_DOMAIN_GART)
137 flags |= TTM_PL_FLAG_TT;
138 if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
139 flags |= TTM_PL_FLAG_SYSTEM;
140
141 ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
142 tile_flags, pnvbo);
143 if (ret)
144 return ret;
145 nvbo = *pnvbo;
146
147 /* we restrict allowed domains on nv50+ to only the types
148 * that were requested at creation time. not possibly on
149 * earlier chips without busting the ABI.
150 */
151 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
152 NOUVEAU_GEM_DOMAIN_GART;
153 if (dev_priv->card_type >= NV_50)
154 nvbo->valid_domains &= domain;
155
156 nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
157 if (!nvbo->gem) {
158 nouveau_bo_ref(NULL, pnvbo);
159 return -ENOMEM;
160 }
161
162 nvbo->bo.persistent_swap_storage = nvbo->gem->filp;
163 nvbo->gem->driver_private = nvbo;
164 return 0;
165 }
166
167 static int
168 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
169 struct drm_nouveau_gem_info *rep)
170 {
171 struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
172 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
173 struct nouveau_vma *vma;
174
175 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
176 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
177 else
178 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
179
180 rep->offset = nvbo->bo.offset;
181 if (fpriv->vm) {
182 vma = nouveau_bo_vma_find(nvbo, fpriv->vm);
183 if (!vma)
184 return -EINVAL;
185
186 rep->offset = vma->offset;
187 }
188
189 rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
190 rep->map_handle = nvbo->bo.addr_space_offset;
191 rep->tile_mode = nvbo->tile_mode;
192 rep->tile_flags = nvbo->tile_flags;
193 return 0;
194 }
195
196 int
197 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
198 struct drm_file *file_priv)
199 {
200 struct drm_nouveau_private *dev_priv = dev->dev_private;
201 struct drm_nouveau_gem_new *req = data;
202 struct nouveau_bo *nvbo = NULL;
203 int ret = 0;
204
205 if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL))
206 dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping;
207
208 if (!dev_priv->engine.vram.flags_valid(dev, req->info.tile_flags)) {
209 NV_ERROR(dev, "bad page flags: 0x%08x\n", req->info.tile_flags);
210 return -EINVAL;
211 }
212
213 ret = nouveau_gem_new(dev, req->info.size, req->align,
214 req->info.domain, req->info.tile_mode,
215 req->info.tile_flags, &nvbo);
216 if (ret)
217 return ret;
218
219 ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
220 if (ret == 0) {
221 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info);
222 if (ret)
223 drm_gem_handle_delete(file_priv, req->info.handle);
224 }
225
226 /* drop reference from allocate - handle holds it now */
227 drm_gem_object_unreference_unlocked(nvbo->gem);
228 return ret;
229 }
230
231 static int
232 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
233 uint32_t write_domains, uint32_t valid_domains)
234 {
235 struct nouveau_bo *nvbo = gem->driver_private;
236 struct ttm_buffer_object *bo = &nvbo->bo;
237 uint32_t domains = valid_domains & nvbo->valid_domains &
238 (write_domains ? write_domains : read_domains);
239 uint32_t pref_flags = 0, valid_flags = 0;
240
241 if (!domains)
242 return -EINVAL;
243
244 if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
245 valid_flags |= TTM_PL_FLAG_VRAM;
246
247 if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
248 valid_flags |= TTM_PL_FLAG_TT;
249
250 if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
251 bo->mem.mem_type == TTM_PL_VRAM)
252 pref_flags |= TTM_PL_FLAG_VRAM;
253
254 else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
255 bo->mem.mem_type == TTM_PL_TT)
256 pref_flags |= TTM_PL_FLAG_TT;
257
258 else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
259 pref_flags |= TTM_PL_FLAG_VRAM;
260
261 else
262 pref_flags |= TTM_PL_FLAG_TT;
263
264 nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
265
266 return 0;
267 }
268
269 struct validate_op {
270 struct list_head vram_list;
271 struct list_head gart_list;
272 struct list_head both_list;
273 };
274
275 static void
276 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
277 {
278 struct list_head *entry, *tmp;
279 struct nouveau_bo *nvbo;
280
281 list_for_each_safe(entry, tmp, list) {
282 nvbo = list_entry(entry, struct nouveau_bo, entry);
283
284 nouveau_bo_fence(nvbo, fence);
285
286 if (unlikely(nvbo->validate_mapped)) {
287 ttm_bo_kunmap(&nvbo->kmap);
288 nvbo->validate_mapped = false;
289 }
290
291 list_del(&nvbo->entry);
292 nvbo->reserved_by = NULL;
293 ttm_bo_unreserve(&nvbo->bo);
294 drm_gem_object_unreference_unlocked(nvbo->gem);
295 }
296 }
297
298 static void
299 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
300 {
301 validate_fini_list(&op->vram_list, fence);
302 validate_fini_list(&op->gart_list, fence);
303 validate_fini_list(&op->both_list, fence);
304 }
305
306 static int
307 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
308 struct drm_nouveau_gem_pushbuf_bo *pbbo,
309 int nr_buffers, struct validate_op *op)
310 {
311 struct drm_device *dev = chan->dev;
312 struct drm_nouveau_private *dev_priv = dev->dev_private;
313 uint32_t sequence;
314 int trycnt = 0;
315 int ret, i;
316
317 sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
318 retry:
319 if (++trycnt > 100000) {
320 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
321 return -EINVAL;
322 }
323
324 for (i = 0; i < nr_buffers; i++) {
325 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
326 struct drm_gem_object *gem;
327 struct nouveau_bo *nvbo;
328
329 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
330 if (!gem) {
331 NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
332 validate_fini(op, NULL);
333 return -ENOENT;
334 }
335 nvbo = gem->driver_private;
336
337 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
338 NV_ERROR(dev, "multiple instances of buffer %d on "
339 "validation list\n", b->handle);
340 validate_fini(op, NULL);
341 return -EINVAL;
342 }
343
344 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
345 if (ret) {
346 validate_fini(op, NULL);
347 if (unlikely(ret == -EAGAIN))
348 ret = ttm_bo_wait_unreserved(&nvbo->bo, true);
349 drm_gem_object_unreference_unlocked(gem);
350 if (unlikely(ret)) {
351 if (ret != -ERESTARTSYS)
352 NV_ERROR(dev, "fail reserve\n");
353 return ret;
354 }
355 goto retry;
356 }
357
358 b->user_priv = (uint64_t)(unsigned long)nvbo;
359 nvbo->reserved_by = file_priv;
360 nvbo->pbbo_index = i;
361 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
362 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
363 list_add_tail(&nvbo->entry, &op->both_list);
364 else
365 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
366 list_add_tail(&nvbo->entry, &op->vram_list);
367 else
368 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
369 list_add_tail(&nvbo->entry, &op->gart_list);
370 else {
371 NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
372 b->valid_domains);
373 list_add_tail(&nvbo->entry, &op->both_list);
374 validate_fini(op, NULL);
375 return -EINVAL;
376 }
377 }
378
379 return 0;
380 }
381
382 static int
383 validate_list(struct nouveau_channel *chan, struct list_head *list,
384 struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
385 {
386 struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
387 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
388 (void __force __user *)(uintptr_t)user_pbbo_ptr;
389 struct drm_device *dev = chan->dev;
390 struct nouveau_bo *nvbo;
391 int ret, relocs = 0;
392
393 list_for_each_entry(nvbo, list, entry) {
394 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
395
396 ret = nouveau_fence_sync(nvbo->bo.sync_obj, chan);
397 if (unlikely(ret)) {
398 NV_ERROR(dev, "fail pre-validate sync\n");
399 return ret;
400 }
401
402 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
403 b->write_domains,
404 b->valid_domains);
405 if (unlikely(ret)) {
406 NV_ERROR(dev, "fail set_domain\n");
407 return ret;
408 }
409
410 nvbo->channel = (b->read_domains & (1 << 31)) ? NULL : chan;
411 ret = nouveau_bo_validate(nvbo, true, false, false);
412 nvbo->channel = NULL;
413 if (unlikely(ret)) {
414 if (ret != -ERESTARTSYS)
415 NV_ERROR(dev, "fail ttm_validate\n");
416 return ret;
417 }
418
419 ret = nouveau_fence_sync(nvbo->bo.sync_obj, chan);
420 if (unlikely(ret)) {
421 NV_ERROR(dev, "fail post-validate sync\n");
422 return ret;
423 }
424
425 if (dev_priv->card_type < NV_50) {
426 if (nvbo->bo.offset == b->presumed.offset &&
427 ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
428 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
429 (nvbo->bo.mem.mem_type == TTM_PL_TT &&
430 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
431 continue;
432
433 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
434 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
435 else
436 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
437 b->presumed.offset = nvbo->bo.offset;
438 b->presumed.valid = 0;
439 relocs++;
440
441 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
442 &b->presumed, sizeof(b->presumed)))
443 return -EFAULT;
444 }
445 }
446
447 return relocs;
448 }
449
450 static int
451 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
452 struct drm_file *file_priv,
453 struct drm_nouveau_gem_pushbuf_bo *pbbo,
454 uint64_t user_buffers, int nr_buffers,
455 struct validate_op *op, int *apply_relocs)
456 {
457 struct drm_device *dev = chan->dev;
458 int ret, relocs = 0;
459
460 INIT_LIST_HEAD(&op->vram_list);
461 INIT_LIST_HEAD(&op->gart_list);
462 INIT_LIST_HEAD(&op->both_list);
463
464 if (nr_buffers == 0)
465 return 0;
466
467 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
468 if (unlikely(ret)) {
469 if (ret != -ERESTARTSYS)
470 NV_ERROR(dev, "validate_init\n");
471 return ret;
472 }
473
474 ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
475 if (unlikely(ret < 0)) {
476 if (ret != -ERESTARTSYS)
477 NV_ERROR(dev, "validate vram_list\n");
478 validate_fini(op, NULL);
479 return ret;
480 }
481 relocs += ret;
482
483 ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
484 if (unlikely(ret < 0)) {
485 if (ret != -ERESTARTSYS)
486 NV_ERROR(dev, "validate gart_list\n");
487 validate_fini(op, NULL);
488 return ret;
489 }
490 relocs += ret;
491
492 ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
493 if (unlikely(ret < 0)) {
494 if (ret != -ERESTARTSYS)
495 NV_ERROR(dev, "validate both_list\n");
496 validate_fini(op, NULL);
497 return ret;
498 }
499 relocs += ret;
500
501 *apply_relocs = relocs;
502 return 0;
503 }
504
505 static inline void *
506 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
507 {
508 void *mem;
509 void __user *userptr = (void __force __user *)(uintptr_t)user;
510
511 mem = kmalloc(nmemb * size, GFP_KERNEL);
512 if (!mem)
513 return ERR_PTR(-ENOMEM);
514
515 if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
516 kfree(mem);
517 return ERR_PTR(-EFAULT);
518 }
519
520 return mem;
521 }
522
523 static int
524 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
525 struct drm_nouveau_gem_pushbuf *req,
526 struct drm_nouveau_gem_pushbuf_bo *bo)
527 {
528 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
529 int ret = 0;
530 unsigned i;
531
532 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
533 if (IS_ERR(reloc))
534 return PTR_ERR(reloc);
535
536 for (i = 0; i < req->nr_relocs; i++) {
537 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
538 struct drm_nouveau_gem_pushbuf_bo *b;
539 struct nouveau_bo *nvbo;
540 uint32_t data;
541
542 if (unlikely(r->bo_index > req->nr_buffers)) {
543 NV_ERROR(dev, "reloc bo index invalid\n");
544 ret = -EINVAL;
545 break;
546 }
547
548 b = &bo[r->bo_index];
549 if (b->presumed.valid)
550 continue;
551
552 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
553 NV_ERROR(dev, "reloc container bo index invalid\n");
554 ret = -EINVAL;
555 break;
556 }
557 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
558
559 if (unlikely(r->reloc_bo_offset + 4 >
560 nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
561 NV_ERROR(dev, "reloc outside of bo\n");
562 ret = -EINVAL;
563 break;
564 }
565
566 if (!nvbo->kmap.virtual) {
567 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
568 &nvbo->kmap);
569 if (ret) {
570 NV_ERROR(dev, "failed kmap for reloc\n");
571 break;
572 }
573 nvbo->validate_mapped = true;
574 }
575
576 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
577 data = b->presumed.offset + r->data;
578 else
579 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
580 data = (b->presumed.offset + r->data) >> 32;
581 else
582 data = r->data;
583
584 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
585 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
586 data |= r->tor;
587 else
588 data |= r->vor;
589 }
590
591 spin_lock(&nvbo->bo.bdev->fence_lock);
592 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
593 spin_unlock(&nvbo->bo.bdev->fence_lock);
594 if (ret) {
595 NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret);
596 break;
597 }
598
599 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
600 }
601
602 kfree(reloc);
603 return ret;
604 }
605
606 int
607 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
608 struct drm_file *file_priv)
609 {
610 struct drm_nouveau_private *dev_priv = dev->dev_private;
611 struct drm_nouveau_gem_pushbuf *req = data;
612 struct drm_nouveau_gem_pushbuf_push *push;
613 struct drm_nouveau_gem_pushbuf_bo *bo;
614 struct nouveau_channel *chan;
615 struct validate_op op;
616 struct nouveau_fence *fence = NULL;
617 int i, j, ret = 0, do_reloc = 0;
618
619 chan = nouveau_channel_get(file_priv, req->channel);
620 if (IS_ERR(chan))
621 return PTR_ERR(chan);
622
623 req->vram_available = dev_priv->fb_aper_free;
624 req->gart_available = dev_priv->gart_info.aper_free;
625 if (unlikely(req->nr_push == 0))
626 goto out_next;
627
628 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
629 NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n",
630 req->nr_push, NOUVEAU_GEM_MAX_PUSH);
631 nouveau_channel_put(&chan);
632 return -EINVAL;
633 }
634
635 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
636 NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n",
637 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
638 nouveau_channel_put(&chan);
639 return -EINVAL;
640 }
641
642 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
643 NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n",
644 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
645 nouveau_channel_put(&chan);
646 return -EINVAL;
647 }
648
649 push = u_memcpya(req->push, req->nr_push, sizeof(*push));
650 if (IS_ERR(push)) {
651 nouveau_channel_put(&chan);
652 return PTR_ERR(push);
653 }
654
655 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
656 if (IS_ERR(bo)) {
657 kfree(push);
658 nouveau_channel_put(&chan);
659 return PTR_ERR(bo);
660 }
661
662 /* Mark push buffers as being used on PFIFO, the validation code
663 * will then make sure that if the pushbuf bo moves, that they
664 * happen on the kernel channel, which will in turn cause a sync
665 * to happen before we try and submit the push buffer.
666 */
667 for (i = 0; i < req->nr_push; i++) {
668 if (push[i].bo_index >= req->nr_buffers) {
669 NV_ERROR(dev, "push %d buffer not in list\n", i);
670 ret = -EINVAL;
671 goto out_prevalid;
672 }
673
674 bo[push[i].bo_index].read_domains |= (1 << 31);
675 }
676
677 /* Validate buffer list */
678 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
679 req->nr_buffers, &op, &do_reloc);
680 if (ret) {
681 if (ret != -ERESTARTSYS)
682 NV_ERROR(dev, "validate: %d\n", ret);
683 goto out_prevalid;
684 }
685
686 /* Apply any relocations that are required */
687 if (do_reloc) {
688 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
689 if (ret) {
690 NV_ERROR(dev, "reloc apply: %d\n", ret);
691 goto out;
692 }
693 }
694
695 if (chan->dma.ib_max) {
696 ret = nouveau_dma_wait(chan, req->nr_push + 1, 6);
697 if (ret) {
698 NV_INFO(dev, "nv50cal_space: %d\n", ret);
699 goto out;
700 }
701
702 for (i = 0; i < req->nr_push; i++) {
703 struct nouveau_bo *nvbo = (void *)(unsigned long)
704 bo[push[i].bo_index].user_priv;
705
706 nv50_dma_push(chan, nvbo, push[i].offset,
707 push[i].length);
708 }
709 } else
710 if (dev_priv->chipset >= 0x25) {
711 ret = RING_SPACE(chan, req->nr_push * 2);
712 if (ret) {
713 NV_ERROR(dev, "cal_space: %d\n", ret);
714 goto out;
715 }
716
717 for (i = 0; i < req->nr_push; i++) {
718 struct nouveau_bo *nvbo = (void *)(unsigned long)
719 bo[push[i].bo_index].user_priv;
720 struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
721
722 OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
723 push[i].offset) | 2);
724 OUT_RING(chan, 0);
725 }
726 } else {
727 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
728 if (ret) {
729 NV_ERROR(dev, "jmp_space: %d\n", ret);
730 goto out;
731 }
732
733 for (i = 0; i < req->nr_push; i++) {
734 struct nouveau_bo *nvbo = (void *)(unsigned long)
735 bo[push[i].bo_index].user_priv;
736 struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
737 uint32_t cmd;
738
739 cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
740 cmd |= 0x20000000;
741 if (unlikely(cmd != req->suffix0)) {
742 if (!nvbo->kmap.virtual) {
743 ret = ttm_bo_kmap(&nvbo->bo, 0,
744 nvbo->bo.mem.
745 num_pages,
746 &nvbo->kmap);
747 if (ret) {
748 WIND_RING(chan);
749 goto out;
750 }
751 nvbo->validate_mapped = true;
752 }
753
754 nouveau_bo_wr32(nvbo, (push[i].offset +
755 push[i].length - 8) / 4, cmd);
756 }
757
758 OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
759 push[i].offset) | 0x20000000);
760 OUT_RING(chan, 0);
761 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
762 OUT_RING(chan, 0);
763 }
764 }
765
766 ret = nouveau_fence_new(chan, &fence, true);
767 if (ret) {
768 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
769 WIND_RING(chan);
770 goto out;
771 }
772
773 out:
774 validate_fini(&op, fence);
775 nouveau_fence_unref(&fence);
776
777 out_prevalid:
778 kfree(bo);
779 kfree(push);
780
781 out_next:
782 if (chan->dma.ib_max) {
783 req->suffix0 = 0x00000000;
784 req->suffix1 = 0x00000000;
785 } else
786 if (dev_priv->chipset >= 0x25) {
787 req->suffix0 = 0x00020000;
788 req->suffix1 = 0x00000000;
789 } else {
790 req->suffix0 = 0x20000000 |
791 (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
792 req->suffix1 = 0x00000000;
793 }
794
795 nouveau_channel_put(&chan);
796 return ret;
797 }
798
799 static inline uint32_t
800 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
801 {
802 uint32_t flags = 0;
803
804 if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
805 flags |= TTM_PL_FLAG_VRAM;
806 if (domain & NOUVEAU_GEM_DOMAIN_GART)
807 flags |= TTM_PL_FLAG_TT;
808
809 return flags;
810 }
811
812 int
813 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
814 struct drm_file *file_priv)
815 {
816 struct drm_nouveau_gem_cpu_prep *req = data;
817 struct drm_gem_object *gem;
818 struct nouveau_bo *nvbo;
819 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
820 int ret = -EINVAL;
821
822 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
823 if (!gem)
824 return -ENOENT;
825 nvbo = nouveau_gem_object(gem);
826
827 spin_lock(&nvbo->bo.bdev->fence_lock);
828 ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
829 spin_unlock(&nvbo->bo.bdev->fence_lock);
830 drm_gem_object_unreference_unlocked(gem);
831 return ret;
832 }
833
834 int
835 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
836 struct drm_file *file_priv)
837 {
838 return 0;
839 }
840
841 int
842 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
843 struct drm_file *file_priv)
844 {
845 struct drm_nouveau_gem_info *req = data;
846 struct drm_gem_object *gem;
847 int ret;
848
849 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
850 if (!gem)
851 return -ENOENT;
852
853 ret = nouveau_gem_info(file_priv, gem, req);
854 drm_gem_object_unreference_unlocked(gem);
855 return ret;
856 }
857
Linux with added FPC-III support