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 <drm/drm_gem_ttm_helper.h>
28
29 #include "nouveau_drv.h"
30 #include "nouveau_dma.h"
31 #include "nouveau_fence.h"
32 #include "nouveau_abi16.h"
33
34 #include "nouveau_ttm.h"
35 #include "nouveau_gem.h"
36 #include "nouveau_mem.h"
37 #include "nouveau_vmm.h"
38
39 #include <nvif/class.h>
40 #include <nvif/push206e.h>
41
nouveau_ttm_fault(struct vm_fault * vmf)42 static vm_fault_t nouveau_ttm_fault(struct vm_fault *vmf)
43 {
44 struct vm_area_struct *vma = vmf->vma;
45 struct ttm_buffer_object *bo = vma->vm_private_data;
46 pgprot_t prot;
47 vm_fault_t ret;
48
49 ret = ttm_bo_vm_reserve(bo, vmf);
50 if (ret)
51 return ret;
52
53 ret = nouveau_ttm_fault_reserve_notify(bo);
54 if (ret)
55 goto error_unlock;
56
57 nouveau_bo_del_io_reserve_lru(bo);
58 prot = vm_get_page_prot(vma->vm_flags);
59 ret = ttm_bo_vm_fault_reserved(vmf, prot, TTM_BO_VM_NUM_PREFAULT);
60 nouveau_bo_add_io_reserve_lru(bo);
61 if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT))
62 return ret;
63
64 error_unlock:
65 dma_resv_unlock(bo->base.resv);
66 return ret;
67 }
68
69 static const struct vm_operations_struct nouveau_ttm_vm_ops = {
70 .fault = nouveau_ttm_fault,
71 .open = ttm_bo_vm_open,
72 .close = ttm_bo_vm_close,
73 .access = ttm_bo_vm_access
74 };
75
76 void
nouveau_gem_object_del(struct drm_gem_object * gem)77 nouveau_gem_object_del(struct drm_gem_object *gem)
78 {
79 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
80 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
81 struct device *dev = drm->dev->dev;
82 int ret;
83
84 ret = pm_runtime_get_sync(dev);
85 if (WARN_ON(ret < 0 && ret != -EACCES)) {
86 pm_runtime_put_autosuspend(dev);
87 return;
88 }
89
90 if (gem->import_attach)
91 drm_prime_gem_destroy(gem, nvbo->bo.sg);
92
93 ttm_bo_put(&nvbo->bo);
94
95 pm_runtime_mark_last_busy(dev);
96 pm_runtime_put_autosuspend(dev);
97 }
98
99 int
nouveau_gem_object_open(struct drm_gem_object * gem,struct drm_file * file_priv)100 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
101 {
102 struct nouveau_cli *cli = nouveau_cli(file_priv);
103 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
104 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
105 struct device *dev = drm->dev->dev;
106 struct nouveau_uvmm *uvmm = nouveau_cli_uvmm(cli);
107 struct nouveau_vmm *vmm = nouveau_cli_vmm(cli);
108 struct nouveau_vma *vma;
109 int ret;
110
111 if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
112 return 0;
113
114 if (nvbo->no_share && uvmm && &uvmm->resv != nvbo->bo.base.resv)
115 return -EPERM;
116
117 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
118 if (ret)
119 return ret;
120
121 ret = pm_runtime_get_sync(dev);
122 if (ret < 0 && ret != -EACCES) {
123 pm_runtime_put_autosuspend(dev);
124 goto out;
125 }
126
127 /* only create a VMA on binding */
128 if (!nouveau_cli_uvmm(cli))
129 ret = nouveau_vma_new(nvbo, vmm, &vma);
130 else
131 ret = 0;
132 pm_runtime_mark_last_busy(dev);
133 pm_runtime_put_autosuspend(dev);
134 out:
135 ttm_bo_unreserve(&nvbo->bo);
136 return ret;
137 }
138
139 struct nouveau_gem_object_unmap {
140 struct nouveau_cli_work work;
141 struct nouveau_vma *vma;
142 };
143
144 static void
nouveau_gem_object_delete(struct nouveau_vma * vma)145 nouveau_gem_object_delete(struct nouveau_vma *vma)
146 {
147 nouveau_fence_unref(&vma->fence);
148 nouveau_vma_del(&vma);
149 }
150
151 static void
nouveau_gem_object_delete_work(struct nouveau_cli_work * w)152 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
153 {
154 struct nouveau_gem_object_unmap *work =
155 container_of(w, typeof(*work), work);
156 nouveau_gem_object_delete(work->vma);
157 kfree(work);
158 }
159
160 static void
nouveau_gem_object_unmap(struct nouveau_bo * nvbo,struct nouveau_vma * vma)161 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
162 {
163 struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
164 struct nouveau_gem_object_unmap *work;
165
166 list_del_init(&vma->head);
167
168 if (!fence) {
169 nouveau_gem_object_delete(vma);
170 return;
171 }
172
173 if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
174 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
175 nouveau_gem_object_delete(vma);
176 return;
177 }
178
179 work->work.func = nouveau_gem_object_delete_work;
180 work->vma = vma;
181 nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
182 }
183
184 void
nouveau_gem_object_close(struct drm_gem_object * gem,struct drm_file * file_priv)185 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
186 {
187 struct nouveau_cli *cli = nouveau_cli(file_priv);
188 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
189 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
190 struct device *dev = drm->dev->dev;
191 struct nouveau_vmm *vmm = nouveau_cli_vmm(cli);
192 struct nouveau_vma *vma;
193 int ret;
194
195 if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
196 return;
197
198 if (nouveau_cli_uvmm(cli))
199 return;
200
201 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
202 if (ret)
203 return;
204
205 vma = nouveau_vma_find(nvbo, vmm);
206 if (vma) {
207 if (--vma->refs == 0) {
208 ret = pm_runtime_get_sync(dev);
209 if (!WARN_ON(ret < 0 && ret != -EACCES)) {
210 nouveau_gem_object_unmap(nvbo, vma);
211 pm_runtime_mark_last_busy(dev);
212 }
213 pm_runtime_put_autosuspend(dev);
214 }
215 }
216 ttm_bo_unreserve(&nvbo->bo);
217 }
218
219 const struct drm_gem_object_funcs nouveau_gem_object_funcs = {
220 .free = nouveau_gem_object_del,
221 .open = nouveau_gem_object_open,
222 .close = nouveau_gem_object_close,
223 .export = nouveau_gem_prime_export,
224 .pin = nouveau_gem_prime_pin,
225 .unpin = nouveau_gem_prime_unpin,
226 .get_sg_table = nouveau_gem_prime_get_sg_table,
227 .vmap = drm_gem_ttm_vmap,
228 .vunmap = drm_gem_ttm_vunmap,
229 .mmap = drm_gem_ttm_mmap,
230 .vm_ops = &nouveau_ttm_vm_ops,
231 };
232
233 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)234 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
235 uint32_t tile_mode, uint32_t tile_flags,
236 struct nouveau_bo **pnvbo)
237 {
238 struct nouveau_drm *drm = cli->drm;
239 struct nouveau_uvmm *uvmm = nouveau_cli_uvmm(cli);
240 struct dma_resv *resv = NULL;
241 struct nouveau_bo *nvbo;
242 int ret;
243
244 if (domain & NOUVEAU_GEM_DOMAIN_NO_SHARE) {
245 if (unlikely(!uvmm))
246 return -EINVAL;
247
248 resv = &uvmm->resv;
249 }
250
251 if (!(domain & (NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART)))
252 domain |= NOUVEAU_GEM_DOMAIN_CPU;
253
254 nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode,
255 tile_flags, false);
256 if (IS_ERR(nvbo))
257 return PTR_ERR(nvbo);
258
259 nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
260 nvbo->no_share = domain & NOUVEAU_GEM_DOMAIN_NO_SHARE;
261
262 /* Initialize the embedded gem-object. We return a single gem-reference
263 * to the caller, instead of a normal nouveau_bo ttm reference. */
264 ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
265 if (ret) {
266 drm_gem_object_release(&nvbo->bo.base);
267 kfree(nvbo);
268 return ret;
269 }
270
271 if (resv)
272 dma_resv_lock(resv, NULL);
273
274 ret = nouveau_bo_init(nvbo, size, align, domain, NULL, resv);
275
276 if (resv)
277 dma_resv_unlock(resv);
278
279 if (ret)
280 return ret;
281
282 /* we restrict allowed domains on nv50+ to only the types
283 * that were requested at creation time. not possibly on
284 * earlier chips without busting the ABI.
285 */
286 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
287 NOUVEAU_GEM_DOMAIN_GART;
288 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
289 nvbo->valid_domains &= domain;
290
291 *pnvbo = nvbo;
292 return 0;
293 }
294
295 static int
nouveau_gem_info(struct drm_file * file_priv,struct drm_gem_object * gem,struct drm_nouveau_gem_info * rep)296 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
297 struct drm_nouveau_gem_info *rep)
298 {
299 struct nouveau_cli *cli = nouveau_cli(file_priv);
300 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
301 struct nouveau_vmm *vmm = nouveau_cli_vmm(cli);
302 struct nouveau_vma *vma;
303
304 if (is_power_of_2(nvbo->valid_domains))
305 rep->domain = nvbo->valid_domains;
306 else if (nvbo->bo.resource->mem_type == TTM_PL_TT)
307 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
308 else
309 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
310 rep->offset = nvbo->offset;
311 if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50 &&
312 !nouveau_cli_uvmm(cli)) {
313 vma = nouveau_vma_find(nvbo, vmm);
314 if (!vma)
315 return -EINVAL;
316
317 rep->offset = vma->addr;
318 } else
319 rep->offset = 0;
320
321 rep->size = nvbo->bo.base.size;
322 rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
323 rep->tile_mode = nvbo->mode;
324 rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
325 if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
326 rep->tile_flags |= nvbo->kind << 8;
327 else
328 if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
329 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
330 else
331 rep->tile_flags |= nvbo->zeta;
332 return 0;
333 }
334
335 int
nouveau_gem_ioctl_new(struct drm_device * dev,void * data,struct drm_file * file_priv)336 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
337 struct drm_file *file_priv)
338 {
339 struct nouveau_cli *cli = nouveau_cli(file_priv);
340 struct drm_nouveau_gem_new *req = data;
341 struct nouveau_bo *nvbo = NULL;
342 int ret = 0;
343
344 /* If uvmm wasn't initialized until now disable it completely to prevent
345 * userspace from mixing up UAPIs.
346 */
347 nouveau_cli_disable_uvmm_noinit(cli);
348
349 ret = nouveau_gem_new(cli, req->info.size, req->align,
350 req->info.domain, req->info.tile_mode,
351 req->info.tile_flags, &nvbo);
352 if (ret)
353 return ret;
354
355 ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
356 &req->info.handle);
357 if (ret == 0) {
358 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
359 if (ret)
360 drm_gem_handle_delete(file_priv, req->info.handle);
361 }
362
363 /* drop reference from allocate - handle holds it now */
364 drm_gem_object_put(&nvbo->bo.base);
365 return ret;
366 }
367
368 static int
nouveau_gem_set_domain(struct drm_gem_object * gem,uint32_t read_domains,uint32_t write_domains,uint32_t valid_domains)369 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
370 uint32_t write_domains, uint32_t valid_domains)
371 {
372 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
373 struct ttm_buffer_object *bo = &nvbo->bo;
374 uint32_t domains = valid_domains & nvbo->valid_domains &
375 (write_domains ? write_domains : read_domains);
376 uint32_t pref_domains = 0;
377
378 if (!domains)
379 return -EINVAL;
380
381 valid_domains &= ~(NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART);
382
383 if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
384 bo->resource->mem_type == TTM_PL_VRAM)
385 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
386
387 else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
388 bo->resource->mem_type == TTM_PL_TT)
389 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
390
391 else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
392 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
393
394 else
395 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
396
397 nouveau_bo_placement_set(nvbo, pref_domains, valid_domains);
398
399 return 0;
400 }
401
402 struct validate_op {
403 struct list_head list;
404 struct ww_acquire_ctx ticket;
405 };
406
407 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)408 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
409 struct nouveau_fence *fence,
410 struct drm_nouveau_gem_pushbuf_bo *pbbo)
411 {
412 struct nouveau_bo *nvbo;
413 struct drm_nouveau_gem_pushbuf_bo *b;
414
415 while (!list_empty(&op->list)) {
416 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
417 b = &pbbo[nvbo->pbbo_index];
418
419 if (likely(fence)) {
420 nouveau_bo_fence(nvbo, fence, !!b->write_domains);
421
422 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
423 struct nouveau_vma *vma =
424 (void *)(unsigned long)b->user_priv;
425 nouveau_fence_unref(&vma->fence);
426 dma_fence_get(&fence->base);
427 vma->fence = fence;
428 }
429 }
430
431 if (unlikely(nvbo->validate_mapped)) {
432 ttm_bo_kunmap(&nvbo->kmap);
433 nvbo->validate_mapped = false;
434 }
435
436 list_del(&nvbo->entry);
437 nvbo->reserved_by = NULL;
438 ttm_bo_unreserve(&nvbo->bo);
439 drm_gem_object_put(&nvbo->bo.base);
440 }
441 }
442
443 static void
validate_fini(struct validate_op * op,struct nouveau_channel * chan,struct nouveau_fence * fence,struct drm_nouveau_gem_pushbuf_bo * pbbo)444 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
445 struct nouveau_fence *fence,
446 struct drm_nouveau_gem_pushbuf_bo *pbbo)
447 {
448 validate_fini_no_ticket(op, chan, fence, pbbo);
449 ww_acquire_fini(&op->ticket);
450 }
451
452 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)453 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
454 struct drm_nouveau_gem_pushbuf_bo *pbbo,
455 int nr_buffers, struct validate_op *op)
456 {
457 struct nouveau_cli *cli = nouveau_cli(file_priv);
458 int trycnt = 0;
459 int ret = -EINVAL, i;
460 struct nouveau_bo *res_bo = NULL;
461 LIST_HEAD(gart_list);
462 LIST_HEAD(vram_list);
463 LIST_HEAD(both_list);
464
465 ww_acquire_init(&op->ticket, &reservation_ww_class);
466 retry:
467 if (++trycnt > 100000) {
468 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
469 return -EINVAL;
470 }
471
472 for (i = 0; i < nr_buffers; i++) {
473 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
474 struct drm_gem_object *gem;
475 struct nouveau_bo *nvbo;
476
477 gem = drm_gem_object_lookup(file_priv, b->handle);
478 if (!gem) {
479 NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
480 ret = -ENOENT;
481 break;
482 }
483 nvbo = nouveau_gem_object(gem);
484 if (nvbo == res_bo) {
485 res_bo = NULL;
486 drm_gem_object_put(gem);
487 continue;
488 }
489
490 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
491 NV_PRINTK(err, cli, "multiple instances of buffer %d on "
492 "validation list\n", b->handle);
493 drm_gem_object_put(gem);
494 ret = -EINVAL;
495 break;
496 }
497
498 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
499 if (ret) {
500 list_splice_tail_init(&vram_list, &op->list);
501 list_splice_tail_init(&gart_list, &op->list);
502 list_splice_tail_init(&both_list, &op->list);
503 validate_fini_no_ticket(op, chan, NULL, NULL);
504 if (unlikely(ret == -EDEADLK)) {
505 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
506 &op->ticket);
507 if (!ret)
508 res_bo = nvbo;
509 }
510 if (unlikely(ret)) {
511 if (ret != -ERESTARTSYS)
512 NV_PRINTK(err, cli, "fail reserve\n");
513 break;
514 }
515 }
516
517 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
518 struct nouveau_vmm *vmm = chan->vmm;
519 struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
520 if (!vma) {
521 NV_PRINTK(err, cli, "vma not found!\n");
522 ret = -EINVAL;
523 break;
524 }
525
526 b->user_priv = (uint64_t)(unsigned long)vma;
527 } else {
528 b->user_priv = (uint64_t)(unsigned long)nvbo;
529 }
530
531 nvbo->reserved_by = file_priv;
532 nvbo->pbbo_index = i;
533 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
534 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
535 list_add_tail(&nvbo->entry, &both_list);
536 else
537 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
538 list_add_tail(&nvbo->entry, &vram_list);
539 else
540 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
541 list_add_tail(&nvbo->entry, &gart_list);
542 else {
543 NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
544 b->valid_domains);
545 list_add_tail(&nvbo->entry, &both_list);
546 ret = -EINVAL;
547 break;
548 }
549 if (nvbo == res_bo)
550 goto retry;
551 }
552
553 ww_acquire_done(&op->ticket);
554 list_splice_tail(&vram_list, &op->list);
555 list_splice_tail(&gart_list, &op->list);
556 list_splice_tail(&both_list, &op->list);
557 if (ret)
558 validate_fini(op, chan, NULL, NULL);
559 return ret;
560
561 }
562
563 static int
validate_list(struct nouveau_channel * chan,struct nouveau_cli * cli,struct list_head * list,struct drm_nouveau_gem_pushbuf_bo * pbbo)564 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
565 struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
566 {
567 struct nouveau_drm *drm = chan->drm;
568 struct nouveau_bo *nvbo;
569 int ret, relocs = 0;
570
571 list_for_each_entry(nvbo, list, entry) {
572 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
573
574 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
575 b->write_domains,
576 b->valid_domains);
577 if (unlikely(ret)) {
578 NV_PRINTK(err, cli, "fail set_domain\n");
579 return ret;
580 }
581
582 ret = nouveau_bo_validate(nvbo, true, false);
583 if (unlikely(ret)) {
584 if (ret != -ERESTARTSYS)
585 NV_PRINTK(err, cli, "fail ttm_validate\n");
586 return ret;
587 }
588
589 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
590 if (unlikely(ret)) {
591 if (ret != -ERESTARTSYS)
592 NV_PRINTK(err, cli, "fail post-validate sync\n");
593 return ret;
594 }
595
596 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
597 if (nvbo->offset == b->presumed.offset &&
598 ((nvbo->bo.resource->mem_type == TTM_PL_VRAM &&
599 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
600 (nvbo->bo.resource->mem_type == TTM_PL_TT &&
601 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
602 continue;
603
604 if (nvbo->bo.resource->mem_type == TTM_PL_TT)
605 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
606 else
607 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
608 b->presumed.offset = nvbo->offset;
609 b->presumed.valid = 0;
610 relocs++;
611 }
612 }
613
614 return relocs;
615 }
616
617 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)618 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
619 struct drm_file *file_priv,
620 struct drm_nouveau_gem_pushbuf_bo *pbbo,
621 int nr_buffers,
622 struct validate_op *op, bool *apply_relocs)
623 {
624 struct nouveau_cli *cli = nouveau_cli(file_priv);
625 int ret;
626
627 INIT_LIST_HEAD(&op->list);
628
629 if (nr_buffers == 0)
630 return 0;
631
632 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
633 if (unlikely(ret)) {
634 if (ret != -ERESTARTSYS)
635 NV_PRINTK(err, cli, "validate_init\n");
636 return ret;
637 }
638
639 ret = validate_list(chan, cli, &op->list, pbbo);
640 if (unlikely(ret < 0)) {
641 if (ret != -ERESTARTSYS)
642 NV_PRINTK(err, cli, "validating bo list\n");
643 validate_fini(op, chan, NULL, NULL);
644 return ret;
645 } else if (ret > 0) {
646 *apply_relocs = true;
647 }
648
649 return 0;
650 }
651
652 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)653 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
654 struct drm_nouveau_gem_pushbuf *req,
655 struct drm_nouveau_gem_pushbuf_reloc *reloc,
656 struct drm_nouveau_gem_pushbuf_bo *bo)
657 {
658 int ret = 0;
659 unsigned i;
660
661 for (i = 0; i < req->nr_relocs; i++) {
662 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
663 struct drm_nouveau_gem_pushbuf_bo *b;
664 struct nouveau_bo *nvbo;
665 uint32_t data;
666 long lret;
667
668 if (unlikely(r->bo_index >= req->nr_buffers)) {
669 NV_PRINTK(err, cli, "reloc bo index invalid\n");
670 ret = -EINVAL;
671 break;
672 }
673
674 b = &bo[r->bo_index];
675 if (b->presumed.valid)
676 continue;
677
678 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
679 NV_PRINTK(err, cli, "reloc container bo index invalid\n");
680 ret = -EINVAL;
681 break;
682 }
683 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
684
685 if (unlikely(r->reloc_bo_offset + 4 >
686 nvbo->bo.base.size)) {
687 NV_PRINTK(err, cli, "reloc outside of bo\n");
688 ret = -EINVAL;
689 break;
690 }
691
692 if (!nvbo->kmap.virtual) {
693 ret = ttm_bo_kmap(&nvbo->bo, 0, PFN_UP(nvbo->bo.base.size),
694 &nvbo->kmap);
695 if (ret) {
696 NV_PRINTK(err, cli, "failed kmap for reloc\n");
697 break;
698 }
699 nvbo->validate_mapped = true;
700 }
701
702 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
703 data = b->presumed.offset + r->data;
704 else
705 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
706 data = (b->presumed.offset + r->data) >> 32;
707 else
708 data = r->data;
709
710 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
711 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
712 data |= r->tor;
713 else
714 data |= r->vor;
715 }
716
717 lret = dma_resv_wait_timeout(nvbo->bo.base.resv,
718 DMA_RESV_USAGE_BOOKKEEP,
719 false, 15 * HZ);
720 if (!lret)
721 ret = -EBUSY;
722 else if (lret > 0)
723 ret = 0;
724 else
725 ret = lret;
726
727 if (ret) {
728 NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n",
729 ret);
730 break;
731 }
732
733 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
734 }
735
736 return ret;
737 }
738
739 int
nouveau_gem_ioctl_pushbuf(struct drm_device * dev,void * data,struct drm_file * file_priv)740 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
741 struct drm_file *file_priv)
742 {
743 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
744 struct nouveau_cli *cli = nouveau_cli(file_priv);
745 struct nouveau_abi16_chan *temp;
746 struct nouveau_drm *drm = nouveau_drm(dev);
747 struct drm_nouveau_gem_pushbuf *req = data;
748 struct drm_nouveau_gem_pushbuf_push *push;
749 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
750 struct drm_nouveau_gem_pushbuf_bo *bo;
751 struct nouveau_channel *chan = NULL;
752 struct validate_op op;
753 struct nouveau_fence *fence = NULL;
754 int i, j, ret = 0;
755 bool do_reloc = false, sync = false;
756
757 if (unlikely(!abi16))
758 return -ENOMEM;
759
760 if (unlikely(nouveau_cli_uvmm(cli)))
761 return nouveau_abi16_put(abi16, -ENOSYS);
762
763 list_for_each_entry(temp, &abi16->channels, head) {
764 if (temp->chan->chid == req->channel) {
765 chan = temp->chan;
766 break;
767 }
768 }
769
770 if (!chan)
771 return nouveau_abi16_put(abi16, -ENOENT);
772 if (unlikely(atomic_read(&chan->killed)))
773 return nouveau_abi16_put(abi16, -ENODEV);
774
775 sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
776
777 req->vram_available = drm->gem.vram_available;
778 req->gart_available = drm->gem.gart_available;
779 if (unlikely(req->nr_push == 0))
780 goto out_next;
781
782 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
783 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
784 req->nr_push, NOUVEAU_GEM_MAX_PUSH);
785 return nouveau_abi16_put(abi16, -EINVAL);
786 }
787
788 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
789 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
790 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
791 return nouveau_abi16_put(abi16, -EINVAL);
792 }
793
794 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
795 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
796 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
797 return nouveau_abi16_put(abi16, -EINVAL);
798 }
799
800 push = u_memcpya(req->push, req->nr_push, sizeof(*push));
801 if (IS_ERR(push))
802 return nouveau_abi16_put(abi16, PTR_ERR(push));
803
804 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
805 if (IS_ERR(bo)) {
806 u_free(push);
807 return nouveau_abi16_put(abi16, PTR_ERR(bo));
808 }
809
810 /* Ensure all push buffers are on validate list */
811 for (i = 0; i < req->nr_push; i++) {
812 if (push[i].bo_index >= req->nr_buffers) {
813 NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
814 ret = -EINVAL;
815 goto out_prevalid;
816 }
817 }
818
819 /* Validate buffer list */
820 revalidate:
821 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
822 req->nr_buffers, &op, &do_reloc);
823 if (ret) {
824 if (ret != -ERESTARTSYS)
825 NV_PRINTK(err, cli, "validate: %d\n", ret);
826 goto out_prevalid;
827 }
828
829 /* Apply any relocations that are required */
830 if (do_reloc) {
831 if (!reloc) {
832 validate_fini(&op, chan, NULL, bo);
833 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
834 if (IS_ERR(reloc)) {
835 ret = PTR_ERR(reloc);
836 goto out_prevalid;
837 }
838
839 goto revalidate;
840 }
841
842 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
843 if (ret) {
844 NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
845 goto out;
846 }
847 }
848
849 if (chan->dma.ib_max) {
850 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
851 if (ret) {
852 NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
853 goto out;
854 }
855
856 for (i = 0; i < req->nr_push; i++) {
857 struct nouveau_vma *vma = (void *)(unsigned long)
858 bo[push[i].bo_index].user_priv;
859 u64 addr = vma->addr + push[i].offset;
860 u32 length = push[i].length & ~NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
861 bool no_prefetch = push[i].length & NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
862
863 nv50_dma_push(chan, addr, length, no_prefetch);
864 }
865 } else
866 if (drm->client.device.info.chipset >= 0x25) {
867 ret = PUSH_WAIT(chan->chan.push, req->nr_push * 2);
868 if (ret) {
869 NV_PRINTK(err, cli, "cal_space: %d\n", ret);
870 goto out;
871 }
872
873 for (i = 0; i < req->nr_push; i++) {
874 struct nouveau_bo *nvbo = (void *)(unsigned long)
875 bo[push[i].bo_index].user_priv;
876
877 PUSH_CALL(chan->chan.push, nvbo->offset + push[i].offset);
878 PUSH_DATA(chan->chan.push, 0);
879 }
880 } else {
881 ret = PUSH_WAIT(chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
882 if (ret) {
883 NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
884 goto out;
885 }
886
887 for (i = 0; i < req->nr_push; i++) {
888 struct nouveau_bo *nvbo = (void *)(unsigned long)
889 bo[push[i].bo_index].user_priv;
890 uint32_t cmd;
891
892 cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
893 cmd |= 0x20000000;
894 if (unlikely(cmd != req->suffix0)) {
895 if (!nvbo->kmap.virtual) {
896 ret = ttm_bo_kmap(&nvbo->bo, 0,
897 PFN_UP(nvbo->bo.base.size),
898 &nvbo->kmap);
899 if (ret) {
900 WIND_RING(chan);
901 goto out;
902 }
903 nvbo->validate_mapped = true;
904 }
905
906 nouveau_bo_wr32(nvbo, (push[i].offset +
907 push[i].length - 8) / 4, cmd);
908 }
909
910 PUSH_JUMP(chan->chan.push, nvbo->offset + push[i].offset);
911 PUSH_DATA(chan->chan.push, 0);
912 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
913 PUSH_DATA(chan->chan.push, 0);
914 }
915 }
916
917 ret = nouveau_fence_new(&fence, chan);
918 if (ret) {
919 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
920 WIND_RING(chan);
921 goto out;
922 }
923
924 if (sync) {
925 if (!(ret = nouveau_fence_wait(fence, false, false))) {
926 if ((ret = dma_fence_get_status(&fence->base)) == 1)
927 ret = 0;
928 }
929 }
930
931 out:
932 validate_fini(&op, chan, fence, bo);
933 nouveau_fence_unref(&fence);
934
935 if (do_reloc) {
936 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
937 u64_to_user_ptr(req->buffers);
938
939 for (i = 0; i < req->nr_buffers; i++) {
940 if (bo[i].presumed.valid)
941 continue;
942
943 if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
944 sizeof(bo[i].presumed))) {
945 ret = -EFAULT;
946 break;
947 }
948 }
949 }
950 out_prevalid:
951 if (!IS_ERR(reloc))
952 u_free(reloc);
953 u_free(bo);
954 u_free(push);
955
956 out_next:
957 if (chan->dma.ib_max) {
958 req->suffix0 = 0x00000000;
959 req->suffix1 = 0x00000000;
960 } else
961 if (drm->client.device.info.chipset >= 0x25) {
962 req->suffix0 = 0x00020000;
963 req->suffix1 = 0x00000000;
964 } else {
965 req->suffix0 = 0x20000000 |
966 (chan->push.addr + ((chan->dma.cur + 2) << 2));
967 req->suffix1 = 0x00000000;
968 }
969
970 return nouveau_abi16_put(abi16, ret);
971 }
972
973 int
nouveau_gem_ioctl_cpu_prep(struct drm_device * dev,void * data,struct drm_file * file_priv)974 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
975 struct drm_file *file_priv)
976 {
977 struct drm_nouveau_gem_cpu_prep *req = data;
978 struct drm_gem_object *gem;
979 struct nouveau_bo *nvbo;
980 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
981 bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
982 long lret;
983 int ret;
984
985 gem = drm_gem_object_lookup(file_priv, req->handle);
986 if (!gem)
987 return -ENOENT;
988 nvbo = nouveau_gem_object(gem);
989
990 lret = dma_resv_wait_timeout(nvbo->bo.base.resv,
991 dma_resv_usage_rw(write), true,
992 no_wait ? 0 : 30 * HZ);
993 if (!lret)
994 ret = -EBUSY;
995 else if (lret > 0)
996 ret = 0;
997 else
998 ret = lret;
999
1000 nouveau_bo_sync_for_cpu(nvbo);
1001 drm_gem_object_put(gem);
1002
1003 return ret;
1004 }
1005
1006 int
nouveau_gem_ioctl_cpu_fini(struct drm_device * dev,void * data,struct drm_file * file_priv)1007 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
1008 struct drm_file *file_priv)
1009 {
1010 struct drm_nouveau_gem_cpu_fini *req = data;
1011 struct drm_gem_object *gem;
1012 struct nouveau_bo *nvbo;
1013
1014 gem = drm_gem_object_lookup(file_priv, req->handle);
1015 if (!gem)
1016 return -ENOENT;
1017 nvbo = nouveau_gem_object(gem);
1018
1019 nouveau_bo_sync_for_device(nvbo);
1020 drm_gem_object_put(gem);
1021 return 0;
1022 }
1023
1024 int
nouveau_gem_ioctl_info(struct drm_device * dev,void * data,struct drm_file * file_priv)1025 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
1026 struct drm_file *file_priv)
1027 {
1028 struct drm_nouveau_gem_info *req = data;
1029 struct drm_gem_object *gem;
1030 int ret;
1031
1032 gem = drm_gem_object_lookup(file_priv, req->handle);
1033 if (!gem)
1034 return -ENOENT;
1035
1036 ret = nouveau_gem_info(file_priv, gem, req);
1037 drm_gem_object_put(gem);
1038 return ret;
1039 }
1040
1041