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
nouveau_gem_object_new(struct drm_gem_object * gem)36 nouveau_gem_object_new(struct drm_gem_object *gem)
37 {
38 return 0;
39 }
40
41 void
nouveau_gem_object_del(struct drm_gem_object * gem)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
nouveau_gem_object_open(struct drm_gem_object * gem,struct drm_file * file_priv)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
nouveau_gem_object_close(struct drm_gem_object * gem,struct drm_file * file_priv)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
nouveau_gem_new(struct drm_device * dev,int size,int align,uint32_t domain,uint32_t tile_mode,uint32_t tile_flags,struct nouveau_bo ** pnvbo)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
nouveau_gem_info(struct drm_file * file_priv,struct drm_gem_object * gem,struct drm_nouveau_gem_info * rep)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
nouveau_gem_ioctl_new(struct drm_device * dev,void * data,struct drm_file * file_priv)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
nouveau_gem_set_domain(struct drm_gem_object * gem,uint32_t read_domains,uint32_t write_domains,uint32_t valid_domains)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
validate_fini_list(struct list_head * list,struct nouveau_fence * fence)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 if (likely(fence))
285 nouveau_bo_fence(nvbo, fence);
286
287 if (unlikely(nvbo->validate_mapped)) {
288 ttm_bo_kunmap(&nvbo->kmap);
289 nvbo->validate_mapped = false;
290 }
291
292 list_del(&nvbo->entry);
293 nvbo->reserved_by = NULL;
294 ttm_bo_unreserve(&nvbo->bo);
295 drm_gem_object_unreference_unlocked(nvbo->gem);
296 }
297 }
298
299 static void
validate_fini(struct validate_op * op,struct nouveau_fence * fence)300 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
301 {
302 validate_fini_list(&op->vram_list, fence);
303 validate_fini_list(&op->gart_list, fence);
304 validate_fini_list(&op->both_list, fence);
305 }
306
307 static int
validate_init(struct nouveau_channel * chan,struct drm_file * file_priv,struct drm_nouveau_gem_pushbuf_bo * pbbo,int nr_buffers,struct validate_op * op)308 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
309 struct drm_nouveau_gem_pushbuf_bo *pbbo,
310 int nr_buffers, struct validate_op *op)
311 {
312 struct drm_device *dev = chan->dev;
313 struct drm_nouveau_private *dev_priv = dev->dev_private;
314 uint32_t sequence;
315 int trycnt = 0;
316 int ret, i;
317
318 sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
319 retry:
320 if (++trycnt > 100000) {
321 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
322 return -EINVAL;
323 }
324
325 for (i = 0; i < nr_buffers; i++) {
326 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
327 struct drm_gem_object *gem;
328 struct nouveau_bo *nvbo;
329
330 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
331 if (!gem) {
332 NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
333 validate_fini(op, NULL);
334 return -ENOENT;
335 }
336 nvbo = gem->driver_private;
337
338 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
339 NV_ERROR(dev, "multiple instances of buffer %d on "
340 "validation list\n", b->handle);
341 validate_fini(op, NULL);
342 return -EINVAL;
343 }
344
345 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
346 if (ret) {
347 validate_fini(op, NULL);
348 if (unlikely(ret == -EAGAIN))
349 ret = ttm_bo_wait_unreserved(&nvbo->bo, true);
350 drm_gem_object_unreference_unlocked(gem);
351 if (unlikely(ret)) {
352 if (ret != -ERESTARTSYS)
353 NV_ERROR(dev, "fail reserve\n");
354 return ret;
355 }
356 goto retry;
357 }
358
359 b->user_priv = (uint64_t)(unsigned long)nvbo;
360 nvbo->reserved_by = file_priv;
361 nvbo->pbbo_index = i;
362 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
363 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
364 list_add_tail(&nvbo->entry, &op->both_list);
365 else
366 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
367 list_add_tail(&nvbo->entry, &op->vram_list);
368 else
369 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
370 list_add_tail(&nvbo->entry, &op->gart_list);
371 else {
372 NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
373 b->valid_domains);
374 list_add_tail(&nvbo->entry, &op->both_list);
375 validate_fini(op, NULL);
376 return -EINVAL;
377 }
378 }
379
380 return 0;
381 }
382
383 static int
validate_sync(struct nouveau_channel * chan,struct nouveau_bo * nvbo)384 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
385 {
386 struct nouveau_fence *fence = NULL;
387 int ret = 0;
388
389 spin_lock(&nvbo->bo.bdev->fence_lock);
390 if (nvbo->bo.sync_obj)
391 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
392 spin_unlock(&nvbo->bo.bdev->fence_lock);
393
394 if (fence) {
395 ret = nouveau_fence_sync(fence, chan);
396 nouveau_fence_unref(&fence);
397 }
398
399 return ret;
400 }
401
402 static int
validate_list(struct nouveau_channel * chan,struct list_head * list,struct drm_nouveau_gem_pushbuf_bo * pbbo,uint64_t user_pbbo_ptr)403 validate_list(struct nouveau_channel *chan, struct list_head *list,
404 struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
405 {
406 struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
407 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
408 (void __force __user *)(uintptr_t)user_pbbo_ptr;
409 struct drm_device *dev = chan->dev;
410 struct nouveau_bo *nvbo;
411 int ret, relocs = 0;
412
413 list_for_each_entry(nvbo, list, entry) {
414 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
415
416 ret = validate_sync(chan, nvbo);
417 if (unlikely(ret)) {
418 NV_ERROR(dev, "fail pre-validate sync\n");
419 return ret;
420 }
421
422 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
423 b->write_domains,
424 b->valid_domains);
425 if (unlikely(ret)) {
426 NV_ERROR(dev, "fail set_domain\n");
427 return ret;
428 }
429
430 ret = nouveau_bo_validate(nvbo, true, false, false);
431 if (unlikely(ret)) {
432 if (ret != -ERESTARTSYS)
433 NV_ERROR(dev, "fail ttm_validate\n");
434 return ret;
435 }
436
437 ret = validate_sync(chan, nvbo);
438 if (unlikely(ret)) {
439 NV_ERROR(dev, "fail post-validate sync\n");
440 return ret;
441 }
442
443 if (dev_priv->card_type < NV_50) {
444 if (nvbo->bo.offset == b->presumed.offset &&
445 ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
446 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
447 (nvbo->bo.mem.mem_type == TTM_PL_TT &&
448 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
449 continue;
450
451 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
452 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
453 else
454 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
455 b->presumed.offset = nvbo->bo.offset;
456 b->presumed.valid = 0;
457 relocs++;
458
459 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
460 &b->presumed, sizeof(b->presumed)))
461 return -EFAULT;
462 }
463 }
464
465 return relocs;
466 }
467
468 static int
nouveau_gem_pushbuf_validate(struct nouveau_channel * chan,struct drm_file * file_priv,struct drm_nouveau_gem_pushbuf_bo * pbbo,uint64_t user_buffers,int nr_buffers,struct validate_op * op,int * apply_relocs)469 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
470 struct drm_file *file_priv,
471 struct drm_nouveau_gem_pushbuf_bo *pbbo,
472 uint64_t user_buffers, int nr_buffers,
473 struct validate_op *op, int *apply_relocs)
474 {
475 struct drm_device *dev = chan->dev;
476 int ret, relocs = 0;
477
478 INIT_LIST_HEAD(&op->vram_list);
479 INIT_LIST_HEAD(&op->gart_list);
480 INIT_LIST_HEAD(&op->both_list);
481
482 if (nr_buffers == 0)
483 return 0;
484
485 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
486 if (unlikely(ret)) {
487 if (ret != -ERESTARTSYS)
488 NV_ERROR(dev, "validate_init\n");
489 return ret;
490 }
491
492 ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
493 if (unlikely(ret < 0)) {
494 if (ret != -ERESTARTSYS)
495 NV_ERROR(dev, "validate vram_list\n");
496 validate_fini(op, NULL);
497 return ret;
498 }
499 relocs += ret;
500
501 ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
502 if (unlikely(ret < 0)) {
503 if (ret != -ERESTARTSYS)
504 NV_ERROR(dev, "validate gart_list\n");
505 validate_fini(op, NULL);
506 return ret;
507 }
508 relocs += ret;
509
510 ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
511 if (unlikely(ret < 0)) {
512 if (ret != -ERESTARTSYS)
513 NV_ERROR(dev, "validate both_list\n");
514 validate_fini(op, NULL);
515 return ret;
516 }
517 relocs += ret;
518
519 *apply_relocs = relocs;
520 return 0;
521 }
522
523 static inline void *
u_memcpya(uint64_t user,unsigned nmemb,unsigned size)524 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
525 {
526 void *mem;
527 void __user *userptr = (void __force __user *)(uintptr_t)user;
528
529 mem = kmalloc(nmemb * size, GFP_KERNEL);
530 if (!mem)
531 return ERR_PTR(-ENOMEM);
532
533 if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
534 kfree(mem);
535 return ERR_PTR(-EFAULT);
536 }
537
538 return mem;
539 }
540
541 static int
nouveau_gem_pushbuf_reloc_apply(struct drm_device * dev,struct drm_nouveau_gem_pushbuf * req,struct drm_nouveau_gem_pushbuf_bo * bo)542 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
543 struct drm_nouveau_gem_pushbuf *req,
544 struct drm_nouveau_gem_pushbuf_bo *bo)
545 {
546 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
547 int ret = 0;
548 unsigned i;
549
550 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
551 if (IS_ERR(reloc))
552 return PTR_ERR(reloc);
553
554 for (i = 0; i < req->nr_relocs; i++) {
555 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
556 struct drm_nouveau_gem_pushbuf_bo *b;
557 struct nouveau_bo *nvbo;
558 uint32_t data;
559
560 if (unlikely(r->bo_index > req->nr_buffers)) {
561 NV_ERROR(dev, "reloc bo index invalid\n");
562 ret = -EINVAL;
563 break;
564 }
565
566 b = &bo[r->bo_index];
567 if (b->presumed.valid)
568 continue;
569
570 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
571 NV_ERROR(dev, "reloc container bo index invalid\n");
572 ret = -EINVAL;
573 break;
574 }
575 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
576
577 if (unlikely(r->reloc_bo_offset + 4 >
578 nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
579 NV_ERROR(dev, "reloc outside of bo\n");
580 ret = -EINVAL;
581 break;
582 }
583
584 if (!nvbo->kmap.virtual) {
585 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
586 &nvbo->kmap);
587 if (ret) {
588 NV_ERROR(dev, "failed kmap for reloc\n");
589 break;
590 }
591 nvbo->validate_mapped = true;
592 }
593
594 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
595 data = b->presumed.offset + r->data;
596 else
597 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
598 data = (b->presumed.offset + r->data) >> 32;
599 else
600 data = r->data;
601
602 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
603 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
604 data |= r->tor;
605 else
606 data |= r->vor;
607 }
608
609 spin_lock(&nvbo->bo.bdev->fence_lock);
610 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
611 spin_unlock(&nvbo->bo.bdev->fence_lock);
612 if (ret) {
613 NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret);
614 break;
615 }
616
617 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
618 }
619
620 kfree(reloc);
621 return ret;
622 }
623
624 int
nouveau_gem_ioctl_pushbuf(struct drm_device * dev,void * data,struct drm_file * file_priv)625 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
626 struct drm_file *file_priv)
627 {
628 struct drm_nouveau_private *dev_priv = dev->dev_private;
629 struct drm_nouveau_gem_pushbuf *req = data;
630 struct drm_nouveau_gem_pushbuf_push *push;
631 struct drm_nouveau_gem_pushbuf_bo *bo;
632 struct nouveau_channel *chan;
633 struct validate_op op;
634 struct nouveau_fence *fence = NULL;
635 int i, j, ret = 0, do_reloc = 0;
636
637 chan = nouveau_channel_get(file_priv, req->channel);
638 if (IS_ERR(chan))
639 return PTR_ERR(chan);
640
641 req->vram_available = dev_priv->fb_aper_free;
642 req->gart_available = dev_priv->gart_info.aper_free;
643 if (unlikely(req->nr_push == 0))
644 goto out_next;
645
646 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
647 NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n",
648 req->nr_push, NOUVEAU_GEM_MAX_PUSH);
649 nouveau_channel_put(&chan);
650 return -EINVAL;
651 }
652
653 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
654 NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n",
655 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
656 nouveau_channel_put(&chan);
657 return -EINVAL;
658 }
659
660 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
661 NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n",
662 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
663 nouveau_channel_put(&chan);
664 return -EINVAL;
665 }
666
667 push = u_memcpya(req->push, req->nr_push, sizeof(*push));
668 if (IS_ERR(push)) {
669 nouveau_channel_put(&chan);
670 return PTR_ERR(push);
671 }
672
673 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
674 if (IS_ERR(bo)) {
675 kfree(push);
676 nouveau_channel_put(&chan);
677 return PTR_ERR(bo);
678 }
679
680 /* Ensure all push buffers are on validate list */
681 for (i = 0; i < req->nr_push; i++) {
682 if (push[i].bo_index >= req->nr_buffers) {
683 NV_ERROR(dev, "push %d buffer not in list\n", i);
684 ret = -EINVAL;
685 goto out_prevalid;
686 }
687 }
688
689 /* Validate buffer list */
690 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
691 req->nr_buffers, &op, &do_reloc);
692 if (ret) {
693 if (ret != -ERESTARTSYS)
694 NV_ERROR(dev, "validate: %d\n", ret);
695 goto out_prevalid;
696 }
697
698 /* Apply any relocations that are required */
699 if (do_reloc) {
700 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
701 if (ret) {
702 NV_ERROR(dev, "reloc apply: %d\n", ret);
703 goto out;
704 }
705 }
706
707 if (chan->dma.ib_max) {
708 ret = nouveau_dma_wait(chan, req->nr_push + 1, 6);
709 if (ret) {
710 NV_INFO(dev, "nv50cal_space: %d\n", ret);
711 goto out;
712 }
713
714 for (i = 0; i < req->nr_push; i++) {
715 struct nouveau_bo *nvbo = (void *)(unsigned long)
716 bo[push[i].bo_index].user_priv;
717
718 nv50_dma_push(chan, nvbo, push[i].offset,
719 push[i].length);
720 }
721 } else
722 if (dev_priv->chipset >= 0x25) {
723 ret = RING_SPACE(chan, req->nr_push * 2);
724 if (ret) {
725 NV_ERROR(dev, "cal_space: %d\n", ret);
726 goto out;
727 }
728
729 for (i = 0; i < req->nr_push; i++) {
730 struct nouveau_bo *nvbo = (void *)(unsigned long)
731 bo[push[i].bo_index].user_priv;
732 struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
733
734 OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
735 push[i].offset) | 2);
736 OUT_RING(chan, 0);
737 }
738 } else {
739 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
740 if (ret) {
741 NV_ERROR(dev, "jmp_space: %d\n", ret);
742 goto out;
743 }
744
745 for (i = 0; i < req->nr_push; i++) {
746 struct nouveau_bo *nvbo = (void *)(unsigned long)
747 bo[push[i].bo_index].user_priv;
748 struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
749 uint32_t cmd;
750
751 cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
752 cmd |= 0x20000000;
753 if (unlikely(cmd != req->suffix0)) {
754 if (!nvbo->kmap.virtual) {
755 ret = ttm_bo_kmap(&nvbo->bo, 0,
756 nvbo->bo.mem.
757 num_pages,
758 &nvbo->kmap);
759 if (ret) {
760 WIND_RING(chan);
761 goto out;
762 }
763 nvbo->validate_mapped = true;
764 }
765
766 nouveau_bo_wr32(nvbo, (push[i].offset +
767 push[i].length - 8) / 4, cmd);
768 }
769
770 OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
771 push[i].offset) | 0x20000000);
772 OUT_RING(chan, 0);
773 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
774 OUT_RING(chan, 0);
775 }
776 }
777
778 ret = nouveau_fence_new(chan, &fence, true);
779 if (ret) {
780 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
781 WIND_RING(chan);
782 goto out;
783 }
784
785 out:
786 validate_fini(&op, fence);
787 nouveau_fence_unref(&fence);
788
789 out_prevalid:
790 kfree(bo);
791 kfree(push);
792
793 out_next:
794 if (chan->dma.ib_max) {
795 req->suffix0 = 0x00000000;
796 req->suffix1 = 0x00000000;
797 } else
798 if (dev_priv->chipset >= 0x25) {
799 req->suffix0 = 0x00020000;
800 req->suffix1 = 0x00000000;
801 } else {
802 req->suffix0 = 0x20000000 |
803 (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
804 req->suffix1 = 0x00000000;
805 }
806
807 nouveau_channel_put(&chan);
808 return ret;
809 }
810
811 static inline uint32_t
domain_to_ttm(struct nouveau_bo * nvbo,uint32_t domain)812 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
813 {
814 uint32_t flags = 0;
815
816 if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
817 flags |= TTM_PL_FLAG_VRAM;
818 if (domain & NOUVEAU_GEM_DOMAIN_GART)
819 flags |= TTM_PL_FLAG_TT;
820
821 return flags;
822 }
823
824 int
nouveau_gem_ioctl_cpu_prep(struct drm_device * dev,void * data,struct drm_file * file_priv)825 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
826 struct drm_file *file_priv)
827 {
828 struct drm_nouveau_gem_cpu_prep *req = data;
829 struct drm_gem_object *gem;
830 struct nouveau_bo *nvbo;
831 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
832 int ret = -EINVAL;
833
834 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
835 if (!gem)
836 return -ENOENT;
837 nvbo = nouveau_gem_object(gem);
838
839 spin_lock(&nvbo->bo.bdev->fence_lock);
840 ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
841 spin_unlock(&nvbo->bo.bdev->fence_lock);
842 drm_gem_object_unreference_unlocked(gem);
843 return ret;
844 }
845
846 int
nouveau_gem_ioctl_cpu_fini(struct drm_device * dev,void * data,struct drm_file * file_priv)847 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
848 struct drm_file *file_priv)
849 {
850 return 0;
851 }
852
853 int
nouveau_gem_ioctl_info(struct drm_device * dev,void * data,struct drm_file * file_priv)854 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
855 struct drm_file *file_priv)
856 {
857 struct drm_nouveau_gem_info *req = data;
858 struct drm_gem_object *gem;
859 int ret;
860
861 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
862 if (!gem)
863 return -ENOENT;
864
865 ret = nouveau_gem_info(file_priv, gem, req);
866 drm_gem_object_unreference_unlocked(gem);
867 return ret;
868 }
869
870