1 /*
2 * Copyright (C) 2008 Ben Skeggs.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27 #include "nouveau_drv.h"
28 #include "nouveau_dma.h"
29 #include "nouveau_fence.h"
30 #include "nouveau_abi16.h"
31
32 #include "nouveau_ttm.h"
33 #include "nouveau_gem.h"
34 #include "nouveau_mem.h"
35 #include "nouveau_vmm.h"
36
37 #include <nvif/class.h>
38 #include <nvif/push206e.h>
39
40 void
nouveau_gem_object_del(struct drm_gem_object * gem)41 nouveau_gem_object_del(struct drm_gem_object *gem)
42 {
43 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
44 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
45 struct device *dev = drm->dev->dev;
46 int ret;
47
48 ret = pm_runtime_get_sync(dev);
49 if (WARN_ON(ret < 0 && ret != -EACCES)) {
50 pm_runtime_put_autosuspend(dev);
51 return;
52 }
53
54 if (gem->import_attach)
55 drm_prime_gem_destroy(gem, nvbo->bo.sg);
56
57 ttm_bo_put(&nvbo->bo);
58
59 pm_runtime_mark_last_busy(dev);
60 pm_runtime_put_autosuspend(dev);
61 }
62
63 int
nouveau_gem_object_open(struct drm_gem_object * gem,struct drm_file * file_priv)64 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
65 {
66 struct nouveau_cli *cli = nouveau_cli(file_priv);
67 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
68 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
69 struct device *dev = drm->dev->dev;
70 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
71 struct nouveau_vma *vma;
72 int ret;
73
74 if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
75 return 0;
76
77 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
78 if (ret)
79 return ret;
80
81 ret = pm_runtime_get_sync(dev);
82 if (ret < 0 && ret != -EACCES) {
83 pm_runtime_put_autosuspend(dev);
84 goto out;
85 }
86
87 ret = nouveau_vma_new(nvbo, vmm, &vma);
88 pm_runtime_mark_last_busy(dev);
89 pm_runtime_put_autosuspend(dev);
90 out:
91 ttm_bo_unreserve(&nvbo->bo);
92 return ret;
93 }
94
95 struct nouveau_gem_object_unmap {
96 struct nouveau_cli_work work;
97 struct nouveau_vma *vma;
98 };
99
100 static void
nouveau_gem_object_delete(struct nouveau_vma * vma)101 nouveau_gem_object_delete(struct nouveau_vma *vma)
102 {
103 nouveau_fence_unref(&vma->fence);
104 nouveau_vma_del(&vma);
105 }
106
107 static void
nouveau_gem_object_delete_work(struct nouveau_cli_work * w)108 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
109 {
110 struct nouveau_gem_object_unmap *work =
111 container_of(w, typeof(*work), work);
112 nouveau_gem_object_delete(work->vma);
113 kfree(work);
114 }
115
116 static void
nouveau_gem_object_unmap(struct nouveau_bo * nvbo,struct nouveau_vma * vma)117 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
118 {
119 struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
120 struct nouveau_gem_object_unmap *work;
121
122 list_del_init(&vma->head);
123
124 if (!fence) {
125 nouveau_gem_object_delete(vma);
126 return;
127 }
128
129 if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
130 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
131 nouveau_gem_object_delete(vma);
132 return;
133 }
134
135 work->work.func = nouveau_gem_object_delete_work;
136 work->vma = vma;
137 nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
138 }
139
140 void
nouveau_gem_object_close(struct drm_gem_object * gem,struct drm_file * file_priv)141 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
142 {
143 struct nouveau_cli *cli = nouveau_cli(file_priv);
144 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
145 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
146 struct device *dev = drm->dev->dev;
147 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : & cli->vmm;
148 struct nouveau_vma *vma;
149 int ret;
150
151 if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
152 return;
153
154 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
155 if (ret)
156 return;
157
158 vma = nouveau_vma_find(nvbo, vmm);
159 if (vma) {
160 if (--vma->refs == 0) {
161 ret = pm_runtime_get_sync(dev);
162 if (!WARN_ON(ret < 0 && ret != -EACCES)) {
163 nouveau_gem_object_unmap(nvbo, vma);
164 pm_runtime_mark_last_busy(dev);
165 }
166 pm_runtime_put_autosuspend(dev);
167 }
168 }
169 ttm_bo_unreserve(&nvbo->bo);
170 }
171
172 int
nouveau_gem_new(struct nouveau_cli * cli,u64 size,int align,uint32_t domain,uint32_t tile_mode,uint32_t tile_flags,struct nouveau_bo ** pnvbo)173 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
174 uint32_t tile_mode, uint32_t tile_flags,
175 struct nouveau_bo **pnvbo)
176 {
177 struct nouveau_drm *drm = cli->drm;
178 struct nouveau_bo *nvbo;
179 int ret;
180
181 if (!(domain & (NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART)))
182 domain |= NOUVEAU_GEM_DOMAIN_CPU;
183
184 nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode,
185 tile_flags);
186 if (IS_ERR(nvbo))
187 return PTR_ERR(nvbo);
188
189 /* Initialize the embedded gem-object. We return a single gem-reference
190 * to the caller, instead of a normal nouveau_bo ttm reference. */
191 ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
192 if (ret) {
193 drm_gem_object_release(&nvbo->bo.base);
194 kfree(nvbo);
195 return ret;
196 }
197
198 ret = nouveau_bo_init(nvbo, size, align, domain, NULL, NULL);
199 if (ret)
200 return ret;
201
202 /* we restrict allowed domains on nv50+ to only the types
203 * that were requested at creation time. not possibly on
204 * earlier chips without busting the ABI.
205 */
206 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
207 NOUVEAU_GEM_DOMAIN_GART;
208 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
209 nvbo->valid_domains &= domain;
210
211 nvbo->bo.persistent_swap_storage = nvbo->bo.base.filp;
212 *pnvbo = nvbo;
213 return 0;
214 }
215
216 static int
nouveau_gem_info(struct drm_file * file_priv,struct drm_gem_object * gem,struct drm_nouveau_gem_info * rep)217 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
218 struct drm_nouveau_gem_info *rep)
219 {
220 struct nouveau_cli *cli = nouveau_cli(file_priv);
221 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
222 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
223 struct nouveau_vma *vma;
224
225 if (is_power_of_2(nvbo->valid_domains))
226 rep->domain = nvbo->valid_domains;
227 else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
228 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
229 else
230 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
231 rep->offset = nvbo->offset;
232 if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
233 vma = nouveau_vma_find(nvbo, vmm);
234 if (!vma)
235 return -EINVAL;
236
237 rep->offset = vma->addr;
238 }
239
240 rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
241 rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
242 rep->tile_mode = nvbo->mode;
243 rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
244 if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
245 rep->tile_flags |= nvbo->kind << 8;
246 else
247 if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
248 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
249 else
250 rep->tile_flags |= nvbo->zeta;
251 return 0;
252 }
253
254 int
nouveau_gem_ioctl_new(struct drm_device * dev,void * data,struct drm_file * file_priv)255 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
256 struct drm_file *file_priv)
257 {
258 struct nouveau_cli *cli = nouveau_cli(file_priv);
259 struct drm_nouveau_gem_new *req = data;
260 struct nouveau_bo *nvbo = NULL;
261 int ret = 0;
262
263 ret = nouveau_gem_new(cli, req->info.size, req->align,
264 req->info.domain, req->info.tile_mode,
265 req->info.tile_flags, &nvbo);
266 if (ret)
267 return ret;
268
269 ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
270 &req->info.handle);
271 if (ret == 0) {
272 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
273 if (ret)
274 drm_gem_handle_delete(file_priv, req->info.handle);
275 }
276
277 /* drop reference from allocate - handle holds it now */
278 drm_gem_object_put(&nvbo->bo.base);
279 return ret;
280 }
281
282 static int
nouveau_gem_set_domain(struct drm_gem_object * gem,uint32_t read_domains,uint32_t write_domains,uint32_t valid_domains)283 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
284 uint32_t write_domains, uint32_t valid_domains)
285 {
286 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
287 struct ttm_buffer_object *bo = &nvbo->bo;
288 uint32_t domains = valid_domains & nvbo->valid_domains &
289 (write_domains ? write_domains : read_domains);
290 uint32_t pref_domains = 0;;
291
292 if (!domains)
293 return -EINVAL;
294
295 valid_domains &= ~(NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART);
296
297 if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
298 bo->mem.mem_type == TTM_PL_VRAM)
299 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
300
301 else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
302 bo->mem.mem_type == TTM_PL_TT)
303 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
304
305 else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
306 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
307
308 else
309 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
310
311 nouveau_bo_placement_set(nvbo, pref_domains, valid_domains);
312
313 return 0;
314 }
315
316 struct validate_op {
317 struct list_head list;
318 struct ww_acquire_ctx ticket;
319 };
320
321 static void
validate_fini_no_ticket(struct validate_op * op,struct nouveau_channel * chan,struct nouveau_fence * fence,struct drm_nouveau_gem_pushbuf_bo * pbbo)322 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
323 struct nouveau_fence *fence,
324 struct drm_nouveau_gem_pushbuf_bo *pbbo)
325 {
326 struct nouveau_bo *nvbo;
327 struct drm_nouveau_gem_pushbuf_bo *b;
328
329 while (!list_empty(&op->list)) {
330 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
331 b = &pbbo[nvbo->pbbo_index];
332
333 if (likely(fence)) {
334 nouveau_bo_fence(nvbo, fence, !!b->write_domains);
335
336 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
337 struct nouveau_vma *vma =
338 (void *)(unsigned long)b->user_priv;
339 nouveau_fence_unref(&vma->fence);
340 dma_fence_get(&fence->base);
341 vma->fence = fence;
342 }
343 }
344
345 if (unlikely(nvbo->validate_mapped)) {
346 ttm_bo_kunmap(&nvbo->kmap);
347 nvbo->validate_mapped = false;
348 }
349
350 list_del(&nvbo->entry);
351 nvbo->reserved_by = NULL;
352 ttm_bo_unreserve(&nvbo->bo);
353 drm_gem_object_put(&nvbo->bo.base);
354 }
355 }
356
357 static void
validate_fini(struct validate_op * op,struct nouveau_channel * chan,struct nouveau_fence * fence,struct drm_nouveau_gem_pushbuf_bo * pbbo)358 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
359 struct nouveau_fence *fence,
360 struct drm_nouveau_gem_pushbuf_bo *pbbo)
361 {
362 validate_fini_no_ticket(op, chan, fence, pbbo);
363 ww_acquire_fini(&op->ticket);
364 }
365
366 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)367 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
368 struct drm_nouveau_gem_pushbuf_bo *pbbo,
369 int nr_buffers, struct validate_op *op)
370 {
371 struct nouveau_cli *cli = nouveau_cli(file_priv);
372 int trycnt = 0;
373 int ret = -EINVAL, i;
374 struct nouveau_bo *res_bo = NULL;
375 LIST_HEAD(gart_list);
376 LIST_HEAD(vram_list);
377 LIST_HEAD(both_list);
378
379 ww_acquire_init(&op->ticket, &reservation_ww_class);
380 retry:
381 if (++trycnt > 100000) {
382 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
383 return -EINVAL;
384 }
385
386 for (i = 0; i < nr_buffers; i++) {
387 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
388 struct drm_gem_object *gem;
389 struct nouveau_bo *nvbo;
390
391 gem = drm_gem_object_lookup(file_priv, b->handle);
392 if (!gem) {
393 NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
394 ret = -ENOENT;
395 break;
396 }
397 nvbo = nouveau_gem_object(gem);
398 if (nvbo == res_bo) {
399 res_bo = NULL;
400 drm_gem_object_put(gem);
401 continue;
402 }
403
404 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
405 NV_PRINTK(err, cli, "multiple instances of buffer %d on "
406 "validation list\n", b->handle);
407 drm_gem_object_put(gem);
408 ret = -EINVAL;
409 break;
410 }
411
412 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
413 if (ret) {
414 list_splice_tail_init(&vram_list, &op->list);
415 list_splice_tail_init(&gart_list, &op->list);
416 list_splice_tail_init(&both_list, &op->list);
417 validate_fini_no_ticket(op, chan, NULL, NULL);
418 if (unlikely(ret == -EDEADLK)) {
419 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
420 &op->ticket);
421 if (!ret)
422 res_bo = nvbo;
423 }
424 if (unlikely(ret)) {
425 if (ret != -ERESTARTSYS)
426 NV_PRINTK(err, cli, "fail reserve\n");
427 break;
428 }
429 }
430
431 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
432 struct nouveau_vmm *vmm = chan->vmm;
433 struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
434 if (!vma) {
435 NV_PRINTK(err, cli, "vma not found!\n");
436 ret = -EINVAL;
437 break;
438 }
439
440 b->user_priv = (uint64_t)(unsigned long)vma;
441 } else {
442 b->user_priv = (uint64_t)(unsigned long)nvbo;
443 }
444
445 nvbo->reserved_by = file_priv;
446 nvbo->pbbo_index = i;
447 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
448 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
449 list_add_tail(&nvbo->entry, &both_list);
450 else
451 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
452 list_add_tail(&nvbo->entry, &vram_list);
453 else
454 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
455 list_add_tail(&nvbo->entry, &gart_list);
456 else {
457 NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
458 b->valid_domains);
459 list_add_tail(&nvbo->entry, &both_list);
460 ret = -EINVAL;
461 break;
462 }
463 if (nvbo == res_bo)
464 goto retry;
465 }
466
467 ww_acquire_done(&op->ticket);
468 list_splice_tail(&vram_list, &op->list);
469 list_splice_tail(&gart_list, &op->list);
470 list_splice_tail(&both_list, &op->list);
471 if (ret)
472 validate_fini(op, chan, NULL, NULL);
473 return ret;
474
475 }
476
477 static int
validate_list(struct nouveau_channel * chan,struct nouveau_cli * cli,struct list_head * list,struct drm_nouveau_gem_pushbuf_bo * pbbo)478 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
479 struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
480 {
481 struct nouveau_drm *drm = chan->drm;
482 struct nouveau_bo *nvbo;
483 int ret, relocs = 0;
484
485 list_for_each_entry(nvbo, list, entry) {
486 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
487
488 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
489 b->write_domains,
490 b->valid_domains);
491 if (unlikely(ret)) {
492 NV_PRINTK(err, cli, "fail set_domain\n");
493 return ret;
494 }
495
496 ret = nouveau_bo_validate(nvbo, true, false);
497 if (unlikely(ret)) {
498 if (ret != -ERESTARTSYS)
499 NV_PRINTK(err, cli, "fail ttm_validate\n");
500 return ret;
501 }
502
503 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
504 if (unlikely(ret)) {
505 if (ret != -ERESTARTSYS)
506 NV_PRINTK(err, cli, "fail post-validate sync\n");
507 return ret;
508 }
509
510 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
511 if (nvbo->offset == b->presumed.offset &&
512 ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
513 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
514 (nvbo->bo.mem.mem_type == TTM_PL_TT &&
515 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
516 continue;
517
518 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
519 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
520 else
521 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
522 b->presumed.offset = nvbo->offset;
523 b->presumed.valid = 0;
524 relocs++;
525 }
526 }
527
528 return relocs;
529 }
530
531 static int
nouveau_gem_pushbuf_validate(struct nouveau_channel * chan,struct drm_file * file_priv,struct drm_nouveau_gem_pushbuf_bo * pbbo,int nr_buffers,struct validate_op * op,bool * apply_relocs)532 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
533 struct drm_file *file_priv,
534 struct drm_nouveau_gem_pushbuf_bo *pbbo,
535 int nr_buffers,
536 struct validate_op *op, bool *apply_relocs)
537 {
538 struct nouveau_cli *cli = nouveau_cli(file_priv);
539 int ret;
540
541 INIT_LIST_HEAD(&op->list);
542
543 if (nr_buffers == 0)
544 return 0;
545
546 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
547 if (unlikely(ret)) {
548 if (ret != -ERESTARTSYS)
549 NV_PRINTK(err, cli, "validate_init\n");
550 return ret;
551 }
552
553 ret = validate_list(chan, cli, &op->list, pbbo);
554 if (unlikely(ret < 0)) {
555 if (ret != -ERESTARTSYS)
556 NV_PRINTK(err, cli, "validating bo list\n");
557 validate_fini(op, chan, NULL, NULL);
558 return ret;
559 } else if (ret > 0) {
560 *apply_relocs = true;
561 }
562
563 return 0;
564 }
565
566 static inline void
u_free(void * addr)567 u_free(void *addr)
568 {
569 kvfree(addr);
570 }
571
572 static inline void *
u_memcpya(uint64_t user,unsigned nmemb,unsigned size)573 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
574 {
575 void *mem;
576 void __user *userptr = (void __force __user *)(uintptr_t)user;
577
578 size *= nmemb;
579
580 mem = kvmalloc(size, GFP_KERNEL);
581 if (!mem)
582 return ERR_PTR(-ENOMEM);
583
584 if (copy_from_user(mem, userptr, size)) {
585 u_free(mem);
586 return ERR_PTR(-EFAULT);
587 }
588
589 return mem;
590 }
591
592 static int
nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli * cli,struct drm_nouveau_gem_pushbuf * req,struct drm_nouveau_gem_pushbuf_reloc * reloc,struct drm_nouveau_gem_pushbuf_bo * bo)593 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
594 struct drm_nouveau_gem_pushbuf *req,
595 struct drm_nouveau_gem_pushbuf_reloc *reloc,
596 struct drm_nouveau_gem_pushbuf_bo *bo)
597 {
598 int ret = 0;
599 unsigned i;
600
601 for (i = 0; i < req->nr_relocs; i++) {
602 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
603 struct drm_nouveau_gem_pushbuf_bo *b;
604 struct nouveau_bo *nvbo;
605 uint32_t data;
606
607 if (unlikely(r->bo_index >= req->nr_buffers)) {
608 NV_PRINTK(err, cli, "reloc bo index invalid\n");
609 ret = -EINVAL;
610 break;
611 }
612
613 b = &bo[r->bo_index];
614 if (b->presumed.valid)
615 continue;
616
617 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
618 NV_PRINTK(err, cli, "reloc container bo index invalid\n");
619 ret = -EINVAL;
620 break;
621 }
622 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
623
624 if (unlikely(r->reloc_bo_offset + 4 >
625 nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
626 NV_PRINTK(err, cli, "reloc outside of bo\n");
627 ret = -EINVAL;
628 break;
629 }
630
631 if (!nvbo->kmap.virtual) {
632 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
633 &nvbo->kmap);
634 if (ret) {
635 NV_PRINTK(err, cli, "failed kmap for reloc\n");
636 break;
637 }
638 nvbo->validate_mapped = true;
639 }
640
641 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
642 data = b->presumed.offset + r->data;
643 else
644 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
645 data = (b->presumed.offset + r->data) >> 32;
646 else
647 data = r->data;
648
649 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
650 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
651 data |= r->tor;
652 else
653 data |= r->vor;
654 }
655
656 ret = ttm_bo_wait(&nvbo->bo, false, false);
657 if (ret) {
658 NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
659 break;
660 }
661
662 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
663 }
664
665 return ret;
666 }
667
668 int
nouveau_gem_ioctl_pushbuf(struct drm_device * dev,void * data,struct drm_file * file_priv)669 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
670 struct drm_file *file_priv)
671 {
672 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
673 struct nouveau_cli *cli = nouveau_cli(file_priv);
674 struct nouveau_abi16_chan *temp;
675 struct nouveau_drm *drm = nouveau_drm(dev);
676 struct drm_nouveau_gem_pushbuf *req = data;
677 struct drm_nouveau_gem_pushbuf_push *push;
678 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
679 struct drm_nouveau_gem_pushbuf_bo *bo;
680 struct nouveau_channel *chan = NULL;
681 struct validate_op op;
682 struct nouveau_fence *fence = NULL;
683 int i, j, ret = 0;
684 bool do_reloc = false, sync = false;
685
686 if (unlikely(!abi16))
687 return -ENOMEM;
688
689 list_for_each_entry(temp, &abi16->channels, head) {
690 if (temp->chan->chid == req->channel) {
691 chan = temp->chan;
692 break;
693 }
694 }
695
696 if (!chan)
697 return nouveau_abi16_put(abi16, -ENOENT);
698 if (unlikely(atomic_read(&chan->killed)))
699 return nouveau_abi16_put(abi16, -ENODEV);
700
701 sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
702
703 req->vram_available = drm->gem.vram_available;
704 req->gart_available = drm->gem.gart_available;
705 if (unlikely(req->nr_push == 0))
706 goto out_next;
707
708 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
709 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
710 req->nr_push, NOUVEAU_GEM_MAX_PUSH);
711 return nouveau_abi16_put(abi16, -EINVAL);
712 }
713
714 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
715 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
716 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
717 return nouveau_abi16_put(abi16, -EINVAL);
718 }
719
720 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
721 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
722 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
723 return nouveau_abi16_put(abi16, -EINVAL);
724 }
725
726 push = u_memcpya(req->push, req->nr_push, sizeof(*push));
727 if (IS_ERR(push))
728 return nouveau_abi16_put(abi16, PTR_ERR(push));
729
730 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
731 if (IS_ERR(bo)) {
732 u_free(push);
733 return nouveau_abi16_put(abi16, PTR_ERR(bo));
734 }
735
736 /* Ensure all push buffers are on validate list */
737 for (i = 0; i < req->nr_push; i++) {
738 if (push[i].bo_index >= req->nr_buffers) {
739 NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
740 ret = -EINVAL;
741 goto out_prevalid;
742 }
743 }
744
745 /* Validate buffer list */
746 revalidate:
747 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
748 req->nr_buffers, &op, &do_reloc);
749 if (ret) {
750 if (ret != -ERESTARTSYS)
751 NV_PRINTK(err, cli, "validate: %d\n", ret);
752 goto out_prevalid;
753 }
754
755 /* Apply any relocations that are required */
756 if (do_reloc) {
757 if (!reloc) {
758 validate_fini(&op, chan, NULL, bo);
759 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
760 if (IS_ERR(reloc)) {
761 ret = PTR_ERR(reloc);
762 goto out_prevalid;
763 }
764
765 goto revalidate;
766 }
767
768 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
769 if (ret) {
770 NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
771 goto out;
772 }
773 }
774
775 if (chan->dma.ib_max) {
776 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
777 if (ret) {
778 NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
779 goto out;
780 }
781
782 for (i = 0; i < req->nr_push; i++) {
783 struct nouveau_vma *vma = (void *)(unsigned long)
784 bo[push[i].bo_index].user_priv;
785
786 nv50_dma_push(chan, vma->addr + push[i].offset,
787 push[i].length);
788 }
789 } else
790 if (drm->client.device.info.chipset >= 0x25) {
791 ret = PUSH_WAIT(chan->chan.push, req->nr_push * 2);
792 if (ret) {
793 NV_PRINTK(err, cli, "cal_space: %d\n", ret);
794 goto out;
795 }
796
797 for (i = 0; i < req->nr_push; i++) {
798 struct nouveau_bo *nvbo = (void *)(unsigned long)
799 bo[push[i].bo_index].user_priv;
800
801 PUSH_CALL(chan->chan.push, nvbo->offset + push[i].offset);
802 PUSH_DATA(chan->chan.push, 0);
803 }
804 } else {
805 ret = PUSH_WAIT(chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
806 if (ret) {
807 NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
808 goto out;
809 }
810
811 for (i = 0; i < req->nr_push; i++) {
812 struct nouveau_bo *nvbo = (void *)(unsigned long)
813 bo[push[i].bo_index].user_priv;
814 uint32_t cmd;
815
816 cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
817 cmd |= 0x20000000;
818 if (unlikely(cmd != req->suffix0)) {
819 if (!nvbo->kmap.virtual) {
820 ret = ttm_bo_kmap(&nvbo->bo, 0,
821 nvbo->bo.mem.
822 num_pages,
823 &nvbo->kmap);
824 if (ret) {
825 WIND_RING(chan);
826 goto out;
827 }
828 nvbo->validate_mapped = true;
829 }
830
831 nouveau_bo_wr32(nvbo, (push[i].offset +
832 push[i].length - 8) / 4, cmd);
833 }
834
835 PUSH_JUMP(chan->chan.push, nvbo->offset + push[i].offset);
836 PUSH_DATA(chan->chan.push, 0);
837 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
838 PUSH_DATA(chan->chan.push, 0);
839 }
840 }
841
842 ret = nouveau_fence_new(chan, false, &fence);
843 if (ret) {
844 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
845 WIND_RING(chan);
846 goto out;
847 }
848
849 if (sync) {
850 if (!(ret = nouveau_fence_wait(fence, false, false))) {
851 if ((ret = dma_fence_get_status(&fence->base)) == 1)
852 ret = 0;
853 }
854 }
855
856 out:
857 validate_fini(&op, chan, fence, bo);
858 nouveau_fence_unref(&fence);
859
860 if (do_reloc) {
861 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
862 u64_to_user_ptr(req->buffers);
863
864 for (i = 0; i < req->nr_buffers; i++) {
865 if (bo[i].presumed.valid)
866 continue;
867
868 if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
869 sizeof(bo[i].presumed))) {
870 ret = -EFAULT;
871 break;
872 }
873 }
874 }
875 out_prevalid:
876 if (!IS_ERR(reloc))
877 u_free(reloc);
878 u_free(bo);
879 u_free(push);
880
881 out_next:
882 if (chan->dma.ib_max) {
883 req->suffix0 = 0x00000000;
884 req->suffix1 = 0x00000000;
885 } else
886 if (drm->client.device.info.chipset >= 0x25) {
887 req->suffix0 = 0x00020000;
888 req->suffix1 = 0x00000000;
889 } else {
890 req->suffix0 = 0x20000000 |
891 (chan->push.addr + ((chan->dma.cur + 2) << 2));
892 req->suffix1 = 0x00000000;
893 }
894
895 return nouveau_abi16_put(abi16, ret);
896 }
897
898 int
nouveau_gem_ioctl_cpu_prep(struct drm_device * dev,void * data,struct drm_file * file_priv)899 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
900 struct drm_file *file_priv)
901 {
902 struct drm_nouveau_gem_cpu_prep *req = data;
903 struct drm_gem_object *gem;
904 struct nouveau_bo *nvbo;
905 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
906 bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
907 long lret;
908 int ret;
909
910 gem = drm_gem_object_lookup(file_priv, req->handle);
911 if (!gem)
912 return -ENOENT;
913 nvbo = nouveau_gem_object(gem);
914
915 lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
916 no_wait ? 0 : 30 * HZ);
917 if (!lret)
918 ret = -EBUSY;
919 else if (lret > 0)
920 ret = 0;
921 else
922 ret = lret;
923
924 nouveau_bo_sync_for_cpu(nvbo);
925 drm_gem_object_put(gem);
926
927 return ret;
928 }
929
930 int
nouveau_gem_ioctl_cpu_fini(struct drm_device * dev,void * data,struct drm_file * file_priv)931 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
932 struct drm_file *file_priv)
933 {
934 struct drm_nouveau_gem_cpu_fini *req = data;
935 struct drm_gem_object *gem;
936 struct nouveau_bo *nvbo;
937
938 gem = drm_gem_object_lookup(file_priv, req->handle);
939 if (!gem)
940 return -ENOENT;
941 nvbo = nouveau_gem_object(gem);
942
943 nouveau_bo_sync_for_device(nvbo);
944 drm_gem_object_put(gem);
945 return 0;
946 }
947
948 int
nouveau_gem_ioctl_info(struct drm_device * dev,void * data,struct drm_file * file_priv)949 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
950 struct drm_file *file_priv)
951 {
952 struct drm_nouveau_gem_info *req = data;
953 struct drm_gem_object *gem;
954 int ret;
955
956 gem = drm_gem_object_lookup(file_priv, req->handle);
957 if (!gem)
958 return -ENOENT;
959
960 ret = nouveau_gem_info(file_priv, gem, req);
961 drm_gem_object_put(gem);
962 return ret;
963 }
964
965