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 &&
115 drm_gpuvm_resv(&uvmm->base) != nvbo->bo.base.resv)
116 return -EPERM;
117
118 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
119 if (ret)
120 return ret;
121
122 ret = pm_runtime_get_sync(dev);
123 if (ret < 0 && ret != -EACCES) {
124 pm_runtime_put_autosuspend(dev);
125 goto out;
126 }
127
128 /* only create a VMA on binding */
129 if (!nouveau_cli_uvmm(cli))
130 ret = nouveau_vma_new(nvbo, vmm, &vma);
131 else
132 ret = 0;
133 pm_runtime_mark_last_busy(dev);
134 pm_runtime_put_autosuspend(dev);
135 out:
136 ttm_bo_unreserve(&nvbo->bo);
137 return ret;
138 }
139
140 struct nouveau_gem_object_unmap {
141 struct nouveau_cli_work work;
142 struct nouveau_vma *vma;
143 };
144
145 static void
nouveau_gem_object_delete(struct nouveau_vma * vma)146 nouveau_gem_object_delete(struct nouveau_vma *vma)
147 {
148 nouveau_fence_unref(&vma->fence);
149 nouveau_vma_del(&vma);
150 }
151
152 static void
nouveau_gem_object_delete_work(struct nouveau_cli_work * w)153 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
154 {
155 struct nouveau_gem_object_unmap *work =
156 container_of(w, typeof(*work), work);
157 nouveau_gem_object_delete(work->vma);
158 kfree(work);
159 }
160
161 static void
nouveau_gem_object_unmap(struct nouveau_bo * nvbo,struct nouveau_vma * vma)162 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
163 {
164 struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
165 struct nouveau_gem_object_unmap *work;
166
167 list_del_init(&vma->head);
168
169 if (!fence) {
170 nouveau_gem_object_delete(vma);
171 return;
172 }
173
174 if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
175 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
176 nouveau_gem_object_delete(vma);
177 return;
178 }
179
180 work->work.func = nouveau_gem_object_delete_work;
181 work->vma = vma;
182 nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
183 }
184
185 void
nouveau_gem_object_close(struct drm_gem_object * gem,struct drm_file * file_priv)186 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
187 {
188 struct nouveau_cli *cli = nouveau_cli(file_priv);
189 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
190 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
191 struct device *dev = drm->dev->dev;
192 struct nouveau_vmm *vmm = nouveau_cli_vmm(cli);
193 struct nouveau_vma *vma;
194 int ret;
195
196 if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
197 return;
198
199 if (nouveau_cli_uvmm(cli))
200 return;
201
202 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
203 if (ret)
204 return;
205
206 vma = nouveau_vma_find(nvbo, vmm);
207 if (vma) {
208 if (--vma->refs == 0) {
209 ret = pm_runtime_get_sync(dev);
210 if (!WARN_ON(ret < 0 && ret != -EACCES)) {
211 nouveau_gem_object_unmap(nvbo, vma);
212 pm_runtime_mark_last_busy(dev);
213 }
214 pm_runtime_put_autosuspend(dev);
215 }
216 }
217 ttm_bo_unreserve(&nvbo->bo);
218 }
219
220 const struct drm_gem_object_funcs nouveau_gem_object_funcs = {
221 .free = nouveau_gem_object_del,
222 .open = nouveau_gem_object_open,
223 .close = nouveau_gem_object_close,
224 .export = nouveau_gem_prime_export,
225 .pin = nouveau_gem_prime_pin,
226 .unpin = nouveau_gem_prime_unpin,
227 .get_sg_table = nouveau_gem_prime_get_sg_table,
228 .vmap = drm_gem_ttm_vmap,
229 .vunmap = drm_gem_ttm_vunmap,
230 .mmap = drm_gem_ttm_mmap,
231 .vm_ops = &nouveau_ttm_vm_ops,
232 };
233
234 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)235 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
236 uint32_t tile_mode, uint32_t tile_flags,
237 struct nouveau_bo **pnvbo)
238 {
239 struct nouveau_drm *drm = cli->drm;
240 struct nouveau_uvmm *uvmm = nouveau_cli_uvmm(cli);
241 struct dma_resv *resv = NULL;
242 struct nouveau_bo *nvbo;
243 int ret;
244
245 if (domain & NOUVEAU_GEM_DOMAIN_NO_SHARE) {
246 if (unlikely(!uvmm))
247 return -EINVAL;
248
249 resv = drm_gpuvm_resv(&uvmm->base);
250 }
251
252 if (!(domain & (NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART)))
253 domain |= NOUVEAU_GEM_DOMAIN_CPU;
254
255 nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode,
256 tile_flags, false);
257 if (IS_ERR(nvbo))
258 return PTR_ERR(nvbo);
259
260 nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
261 nvbo->no_share = domain & NOUVEAU_GEM_DOMAIN_NO_SHARE;
262
263 /* Initialize the embedded gem-object. We return a single gem-reference
264 * to the caller, instead of a normal nouveau_bo ttm reference. */
265 ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
266 if (ret) {
267 drm_gem_object_release(&nvbo->bo.base);
268 kfree(nvbo);
269 return ret;
270 }
271
272 if (resv)
273 dma_resv_lock(resv, NULL);
274
275 ret = nouveau_bo_init(nvbo, size, align, domain, NULL, resv);
276
277 if (resv)
278 dma_resv_unlock(resv);
279
280 if (ret)
281 return ret;
282
283 /* we restrict allowed domains on nv50+ to only the types
284 * that were requested at creation time. not possibly on
285 * earlier chips without busting the ABI.
286 */
287 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
288 NOUVEAU_GEM_DOMAIN_GART;
289 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
290 nvbo->valid_domains &= domain;
291
292 if (nvbo->no_share) {
293 nvbo->r_obj = drm_gpuvm_resv_obj(&uvmm->base);
294 drm_gem_object_get(nvbo->r_obj);
295 }
296
297 *pnvbo = nvbo;
298 return 0;
299 }
300
301 static int
nouveau_gem_info(struct drm_file * file_priv,struct drm_gem_object * gem,struct drm_nouveau_gem_info * rep)302 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
303 struct drm_nouveau_gem_info *rep)
304 {
305 struct nouveau_cli *cli = nouveau_cli(file_priv);
306 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
307 struct nouveau_vmm *vmm = nouveau_cli_vmm(cli);
308 struct nouveau_vma *vma;
309
310 if (is_power_of_2(nvbo->valid_domains))
311 rep->domain = nvbo->valid_domains;
312 else if (nvbo->bo.resource->mem_type == TTM_PL_TT)
313 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
314 else
315 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
316 rep->offset = nvbo->offset;
317 if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50 &&
318 !nouveau_cli_uvmm(cli)) {
319 vma = nouveau_vma_find(nvbo, vmm);
320 if (!vma)
321 return -EINVAL;
322
323 rep->offset = vma->addr;
324 } else
325 rep->offset = 0;
326
327 rep->size = nvbo->bo.base.size;
328 rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
329 rep->tile_mode = nvbo->mode;
330 rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
331 if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
332 rep->tile_flags |= nvbo->kind << 8;
333 else
334 if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
335 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
336 else
337 rep->tile_flags |= nvbo->zeta;
338 return 0;
339 }
340
341 int
nouveau_gem_ioctl_new(struct drm_device * dev,void * data,struct drm_file * file_priv)342 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
343 struct drm_file *file_priv)
344 {
345 struct nouveau_cli *cli = nouveau_cli(file_priv);
346 struct drm_nouveau_gem_new *req = data;
347 struct nouveau_bo *nvbo = NULL;
348 int ret = 0;
349
350 /* If uvmm wasn't initialized until now disable it completely to prevent
351 * userspace from mixing up UAPIs.
352 */
353 nouveau_cli_disable_uvmm_noinit(cli);
354
355 ret = nouveau_gem_new(cli, req->info.size, req->align,
356 req->info.domain, req->info.tile_mode,
357 req->info.tile_flags, &nvbo);
358 if (ret)
359 return ret;
360
361 ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
362 &req->info.handle);
363 if (ret == 0) {
364 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
365 if (ret)
366 drm_gem_handle_delete(file_priv, req->info.handle);
367 }
368
369 /* drop reference from allocate - handle holds it now */
370 drm_gem_object_put(&nvbo->bo.base);
371 return ret;
372 }
373
374 static int
nouveau_gem_set_domain(struct drm_gem_object * gem,uint32_t read_domains,uint32_t write_domains,uint32_t valid_domains)375 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
376 uint32_t write_domains, uint32_t valid_domains)
377 {
378 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
379 struct ttm_buffer_object *bo = &nvbo->bo;
380 uint32_t domains = valid_domains & nvbo->valid_domains &
381 (write_domains ? write_domains : read_domains);
382 uint32_t pref_domains = 0;
383
384 if (!domains)
385 return -EINVAL;
386
387 valid_domains &= ~(NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART);
388
389 if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
390 bo->resource->mem_type == TTM_PL_VRAM)
391 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
392
393 else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
394 bo->resource->mem_type == TTM_PL_TT)
395 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
396
397 else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
398 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
399
400 else
401 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
402
403 nouveau_bo_placement_set(nvbo, pref_domains, valid_domains);
404
405 return 0;
406 }
407
408 struct validate_op {
409 struct list_head list;
410 struct ww_acquire_ctx ticket;
411 };
412
413 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)414 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
415 struct nouveau_fence *fence,
416 struct drm_nouveau_gem_pushbuf_bo *pbbo)
417 {
418 struct nouveau_bo *nvbo;
419 struct drm_nouveau_gem_pushbuf_bo *b;
420
421 while (!list_empty(&op->list)) {
422 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
423 b = &pbbo[nvbo->pbbo_index];
424
425 if (likely(fence)) {
426 nouveau_bo_fence(nvbo, fence, !!b->write_domains);
427
428 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
429 struct nouveau_vma *vma =
430 (void *)(unsigned long)b->user_priv;
431 nouveau_fence_unref(&vma->fence);
432 dma_fence_get(&fence->base);
433 vma->fence = fence;
434 }
435 }
436
437 if (unlikely(nvbo->validate_mapped)) {
438 ttm_bo_kunmap(&nvbo->kmap);
439 nvbo->validate_mapped = false;
440 }
441
442 list_del(&nvbo->entry);
443 nvbo->reserved_by = NULL;
444 ttm_bo_unreserve(&nvbo->bo);
445 drm_gem_object_put(&nvbo->bo.base);
446 }
447 }
448
449 static void
validate_fini(struct validate_op * op,struct nouveau_channel * chan,struct nouveau_fence * fence,struct drm_nouveau_gem_pushbuf_bo * pbbo)450 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
451 struct nouveau_fence *fence,
452 struct drm_nouveau_gem_pushbuf_bo *pbbo)
453 {
454 validate_fini_no_ticket(op, chan, fence, pbbo);
455 ww_acquire_fini(&op->ticket);
456 }
457
458 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)459 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
460 struct drm_nouveau_gem_pushbuf_bo *pbbo,
461 int nr_buffers, struct validate_op *op)
462 {
463 struct nouveau_cli *cli = nouveau_cli(file_priv);
464 int trycnt = 0;
465 int ret = -EINVAL, i;
466 struct nouveau_bo *res_bo = NULL;
467 LIST_HEAD(gart_list);
468 LIST_HEAD(vram_list);
469 LIST_HEAD(both_list);
470
471 ww_acquire_init(&op->ticket, &reservation_ww_class);
472 retry:
473 if (++trycnt > 100000) {
474 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
475 return -EINVAL;
476 }
477
478 for (i = 0; i < nr_buffers; i++) {
479 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
480 struct drm_gem_object *gem;
481 struct nouveau_bo *nvbo;
482
483 gem = drm_gem_object_lookup(file_priv, b->handle);
484 if (!gem) {
485 NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
486 ret = -ENOENT;
487 break;
488 }
489 nvbo = nouveau_gem_object(gem);
490 if (nvbo == res_bo) {
491 res_bo = NULL;
492 drm_gem_object_put(gem);
493 continue;
494 }
495
496 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
497 NV_PRINTK(err, cli, "multiple instances of buffer %d on "
498 "validation list\n", b->handle);
499 drm_gem_object_put(gem);
500 ret = -EINVAL;
501 break;
502 }
503
504 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
505 if (ret) {
506 list_splice_tail_init(&vram_list, &op->list);
507 list_splice_tail_init(&gart_list, &op->list);
508 list_splice_tail_init(&both_list, &op->list);
509 validate_fini_no_ticket(op, chan, NULL, NULL);
510 if (unlikely(ret == -EDEADLK)) {
511 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
512 &op->ticket);
513 if (!ret)
514 res_bo = nvbo;
515 }
516 if (unlikely(ret)) {
517 if (ret != -ERESTARTSYS)
518 NV_PRINTK(err, cli, "fail reserve\n");
519 break;
520 }
521 }
522
523 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
524 struct nouveau_vmm *vmm = chan->vmm;
525 struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
526 if (!vma) {
527 NV_PRINTK(err, cli, "vma not found!\n");
528 ret = -EINVAL;
529 break;
530 }
531
532 b->user_priv = (uint64_t)(unsigned long)vma;
533 } else {
534 b->user_priv = (uint64_t)(unsigned long)nvbo;
535 }
536
537 nvbo->reserved_by = file_priv;
538 nvbo->pbbo_index = i;
539 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
540 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
541 list_add_tail(&nvbo->entry, &both_list);
542 else
543 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
544 list_add_tail(&nvbo->entry, &vram_list);
545 else
546 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
547 list_add_tail(&nvbo->entry, &gart_list);
548 else {
549 NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
550 b->valid_domains);
551 list_add_tail(&nvbo->entry, &both_list);
552 ret = -EINVAL;
553 break;
554 }
555 if (nvbo == res_bo)
556 goto retry;
557 }
558
559 ww_acquire_done(&op->ticket);
560 list_splice_tail(&vram_list, &op->list);
561 list_splice_tail(&gart_list, &op->list);
562 list_splice_tail(&both_list, &op->list);
563 if (ret)
564 validate_fini(op, chan, NULL, NULL);
565 return ret;
566
567 }
568
569 static int
validate_list(struct nouveau_channel * chan,struct list_head * list,struct drm_nouveau_gem_pushbuf_bo * pbbo)570 validate_list(struct nouveau_channel *chan,
571 struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
572 {
573 struct nouveau_cli *cli = chan->cli;
574 struct nouveau_drm *drm = cli->drm;
575 struct nouveau_bo *nvbo;
576 int ret, relocs = 0;
577
578 list_for_each_entry(nvbo, list, entry) {
579 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
580
581 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
582 b->write_domains,
583 b->valid_domains);
584 if (unlikely(ret)) {
585 NV_PRINTK(err, cli, "fail set_domain\n");
586 return ret;
587 }
588
589 ret = nouveau_bo_validate(nvbo, true, false);
590 if (unlikely(ret)) {
591 if (ret != -ERESTARTSYS)
592 NV_PRINTK(err, cli, "fail ttm_validate\n");
593 return ret;
594 }
595
596 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
597 if (unlikely(ret)) {
598 if (ret != -ERESTARTSYS)
599 NV_PRINTK(err, cli, "fail post-validate sync\n");
600 return ret;
601 }
602
603 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
604 if (nvbo->offset == b->presumed.offset &&
605 ((nvbo->bo.resource->mem_type == TTM_PL_VRAM &&
606 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
607 (nvbo->bo.resource->mem_type == TTM_PL_TT &&
608 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
609 continue;
610
611 if (nvbo->bo.resource->mem_type == TTM_PL_TT)
612 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
613 else
614 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
615 b->presumed.offset = nvbo->offset;
616 b->presumed.valid = 0;
617 relocs++;
618 }
619 }
620
621 return relocs;
622 }
623
624 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)625 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
626 struct drm_file *file_priv,
627 struct drm_nouveau_gem_pushbuf_bo *pbbo,
628 int nr_buffers,
629 struct validate_op *op, bool *apply_relocs)
630 {
631 struct nouveau_cli *cli = nouveau_cli(file_priv);
632 int ret;
633
634 INIT_LIST_HEAD(&op->list);
635
636 if (nr_buffers == 0)
637 return 0;
638
639 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
640 if (unlikely(ret)) {
641 if (ret != -ERESTARTSYS)
642 NV_PRINTK(err, cli, "validate_init\n");
643 return ret;
644 }
645
646 ret = validate_list(chan, &op->list, pbbo);
647 if (unlikely(ret < 0)) {
648 if (ret != -ERESTARTSYS)
649 NV_PRINTK(err, cli, "validating bo list\n");
650 validate_fini(op, chan, NULL, NULL);
651 return ret;
652 } else if (ret > 0) {
653 *apply_relocs = true;
654 }
655
656 return 0;
657 }
658
659 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)660 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
661 struct drm_nouveau_gem_pushbuf *req,
662 struct drm_nouveau_gem_pushbuf_reloc *reloc,
663 struct drm_nouveau_gem_pushbuf_bo *bo)
664 {
665 int ret = 0;
666 unsigned i;
667
668 for (i = 0; i < req->nr_relocs; i++) {
669 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
670 struct drm_nouveau_gem_pushbuf_bo *b;
671 struct nouveau_bo *nvbo;
672 uint32_t data;
673 long lret;
674
675 if (unlikely(r->bo_index >= req->nr_buffers)) {
676 NV_PRINTK(err, cli, "reloc bo index invalid\n");
677 ret = -EINVAL;
678 break;
679 }
680
681 b = &bo[r->bo_index];
682 if (b->presumed.valid)
683 continue;
684
685 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
686 NV_PRINTK(err, cli, "reloc container bo index invalid\n");
687 ret = -EINVAL;
688 break;
689 }
690 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
691
692 if (unlikely(r->reloc_bo_offset + 4 >
693 nvbo->bo.base.size)) {
694 NV_PRINTK(err, cli, "reloc outside of bo\n");
695 ret = -EINVAL;
696 break;
697 }
698
699 if (!nvbo->kmap.virtual) {
700 ret = ttm_bo_kmap(&nvbo->bo, 0, PFN_UP(nvbo->bo.base.size),
701 &nvbo->kmap);
702 if (ret) {
703 NV_PRINTK(err, cli, "failed kmap for reloc\n");
704 break;
705 }
706 nvbo->validate_mapped = true;
707 }
708
709 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
710 data = b->presumed.offset + r->data;
711 else
712 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
713 data = (b->presumed.offset + r->data) >> 32;
714 else
715 data = r->data;
716
717 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
718 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
719 data |= r->tor;
720 else
721 data |= r->vor;
722 }
723
724 lret = dma_resv_wait_timeout(nvbo->bo.base.resv,
725 DMA_RESV_USAGE_BOOKKEEP,
726 false, 15 * HZ);
727 if (!lret)
728 ret = -EBUSY;
729 else if (lret > 0)
730 ret = 0;
731 else
732 ret = lret;
733
734 if (ret) {
735 NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n",
736 ret);
737 break;
738 }
739
740 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
741 }
742
743 return ret;
744 }
745
746 int
nouveau_gem_ioctl_pushbuf(struct drm_device * dev,void * data,struct drm_file * file_priv)747 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
748 struct drm_file *file_priv)
749 {
750 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
751 struct nouveau_cli *cli = nouveau_cli(file_priv);
752 struct nouveau_abi16_chan *temp;
753 struct nouveau_drm *drm = nouveau_drm(dev);
754 struct drm_nouveau_gem_pushbuf *req = data;
755 struct drm_nouveau_gem_pushbuf_push *push;
756 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
757 struct drm_nouveau_gem_pushbuf_bo *bo;
758 struct nouveau_channel *chan = NULL;
759 struct validate_op op;
760 struct nouveau_fence *fence = NULL;
761 int i, j, ret = 0;
762 bool do_reloc = false, sync = false;
763
764 if (unlikely(!abi16))
765 return -ENOMEM;
766
767 if (unlikely(nouveau_cli_uvmm(cli)))
768 return nouveau_abi16_put(abi16, -ENOSYS);
769
770 list_for_each_entry(temp, &abi16->channels, head) {
771 if (temp->chan->chid == req->channel) {
772 chan = temp->chan;
773 break;
774 }
775 }
776
777 if (!chan)
778 return nouveau_abi16_put(abi16, -ENOENT);
779 if (unlikely(atomic_read(&chan->killed)))
780 return nouveau_abi16_put(abi16, -ENODEV);
781
782 sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
783
784 req->vram_available = drm->gem.vram_available;
785 req->gart_available = drm->gem.gart_available;
786 if (unlikely(req->nr_push == 0))
787 goto out_next;
788
789 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
790 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
791 req->nr_push, NOUVEAU_GEM_MAX_PUSH);
792 return nouveau_abi16_put(abi16, -EINVAL);
793 }
794
795 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
796 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
797 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
798 return nouveau_abi16_put(abi16, -EINVAL);
799 }
800
801 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
802 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
803 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
804 return nouveau_abi16_put(abi16, -EINVAL);
805 }
806
807 push = u_memcpya(req->push, req->nr_push, sizeof(*push));
808 if (IS_ERR(push))
809 return nouveau_abi16_put(abi16, PTR_ERR(push));
810
811 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
812 if (IS_ERR(bo)) {
813 u_free(push);
814 return nouveau_abi16_put(abi16, PTR_ERR(bo));
815 }
816
817 /* Ensure all push buffers are on validate list */
818 for (i = 0; i < req->nr_push; i++) {
819 if (push[i].bo_index >= req->nr_buffers) {
820 NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
821 ret = -EINVAL;
822 goto out_prevalid;
823 }
824 }
825
826 /* Validate buffer list */
827 revalidate:
828 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
829 req->nr_buffers, &op, &do_reloc);
830 if (ret) {
831 if (ret != -ERESTARTSYS)
832 NV_PRINTK(err, cli, "validate: %d\n", ret);
833 goto out_prevalid;
834 }
835
836 /* Apply any relocations that are required */
837 if (do_reloc) {
838 if (!reloc) {
839 validate_fini(&op, chan, NULL, bo);
840 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
841 if (IS_ERR(reloc)) {
842 ret = PTR_ERR(reloc);
843 goto out_prevalid;
844 }
845
846 goto revalidate;
847 }
848
849 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
850 if (ret) {
851 NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
852 goto out;
853 }
854 }
855
856 if (chan->dma.ib_max) {
857 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
858 if (ret) {
859 NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
860 goto out;
861 }
862
863 for (i = 0; i < req->nr_push; i++) {
864 struct nouveau_vma *vma = (void *)(unsigned long)
865 bo[push[i].bo_index].user_priv;
866 u64 addr = vma->addr + push[i].offset;
867 u32 length = push[i].length & ~NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
868 bool no_prefetch = push[i].length & NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
869
870 nv50_dma_push(chan, addr, length, no_prefetch);
871 }
872 } else
873 if (drm->client.device.info.chipset >= 0x25) {
874 ret = PUSH_WAIT(&chan->chan.push, req->nr_push * 2);
875 if (ret) {
876 NV_PRINTK(err, cli, "cal_space: %d\n", ret);
877 goto out;
878 }
879
880 for (i = 0; i < req->nr_push; i++) {
881 struct nouveau_bo *nvbo = (void *)(unsigned long)
882 bo[push[i].bo_index].user_priv;
883
884 PUSH_CALL(&chan->chan.push, nvbo->offset + push[i].offset);
885 PUSH_DATA(&chan->chan.push, 0);
886 }
887 } else {
888 ret = PUSH_WAIT(&chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
889 if (ret) {
890 NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
891 goto out;
892 }
893
894 for (i = 0; i < req->nr_push; i++) {
895 struct nouveau_bo *nvbo = (void *)(unsigned long)
896 bo[push[i].bo_index].user_priv;
897 uint32_t cmd;
898
899 cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
900 cmd |= 0x20000000;
901 if (unlikely(cmd != req->suffix0)) {
902 if (!nvbo->kmap.virtual) {
903 ret = ttm_bo_kmap(&nvbo->bo, 0,
904 PFN_UP(nvbo->bo.base.size),
905 &nvbo->kmap);
906 if (ret) {
907 WIND_RING(chan);
908 goto out;
909 }
910 nvbo->validate_mapped = true;
911 }
912
913 nouveau_bo_wr32(nvbo, (push[i].offset +
914 push[i].length - 8) / 4, cmd);
915 }
916
917 PUSH_JUMP(&chan->chan.push, nvbo->offset + push[i].offset);
918 PUSH_DATA(&chan->chan.push, 0);
919 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
920 PUSH_DATA(&chan->chan.push, 0);
921 }
922 }
923
924 ret = nouveau_fence_new(&fence, chan);
925 if (ret) {
926 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
927 WIND_RING(chan);
928 goto out;
929 }
930
931 if (sync) {
932 if (!(ret = nouveau_fence_wait(fence, false, false))) {
933 if ((ret = dma_fence_get_status(&fence->base)) == 1)
934 ret = 0;
935 }
936 }
937
938 out:
939 validate_fini(&op, chan, fence, bo);
940 nouveau_fence_unref(&fence);
941
942 if (do_reloc) {
943 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
944 u64_to_user_ptr(req->buffers);
945
946 for (i = 0; i < req->nr_buffers; i++) {
947 if (bo[i].presumed.valid)
948 continue;
949
950 if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
951 sizeof(bo[i].presumed))) {
952 ret = -EFAULT;
953 break;
954 }
955 }
956 }
957 out_prevalid:
958 if (!IS_ERR(reloc))
959 u_free(reloc);
960 u_free(bo);
961 u_free(push);
962
963 out_next:
964 if (chan->dma.ib_max) {
965 req->suffix0 = 0x00000000;
966 req->suffix1 = 0x00000000;
967 } else
968 if (drm->client.device.info.chipset >= 0x25) {
969 req->suffix0 = 0x00020000;
970 req->suffix1 = 0x00000000;
971 } else {
972 req->suffix0 = 0x20000000 |
973 (chan->push.addr + ((chan->dma.cur + 2) << 2));
974 req->suffix1 = 0x00000000;
975 }
976
977 return nouveau_abi16_put(abi16, ret);
978 }
979
980 int
nouveau_gem_ioctl_cpu_prep(struct drm_device * dev,void * data,struct drm_file * file_priv)981 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
982 struct drm_file *file_priv)
983 {
984 struct drm_nouveau_gem_cpu_prep *req = data;
985 struct drm_gem_object *gem;
986 struct nouveau_bo *nvbo;
987 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
988 bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
989 long lret;
990 int ret;
991
992 gem = drm_gem_object_lookup(file_priv, req->handle);
993 if (!gem)
994 return -ENOENT;
995 nvbo = nouveau_gem_object(gem);
996
997 lret = dma_resv_wait_timeout(nvbo->bo.base.resv,
998 dma_resv_usage_rw(write), true,
999 no_wait ? 0 : 30 * HZ);
1000 if (!lret)
1001 ret = -EBUSY;
1002 else if (lret > 0)
1003 ret = 0;
1004 else
1005 ret = lret;
1006
1007 nouveau_bo_sync_for_cpu(nvbo);
1008 drm_gem_object_put(gem);
1009
1010 return ret;
1011 }
1012
1013 int
nouveau_gem_ioctl_cpu_fini(struct drm_device * dev,void * data,struct drm_file * file_priv)1014 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
1015 struct drm_file *file_priv)
1016 {
1017 struct drm_nouveau_gem_cpu_fini *req = data;
1018 struct drm_gem_object *gem;
1019 struct nouveau_bo *nvbo;
1020
1021 gem = drm_gem_object_lookup(file_priv, req->handle);
1022 if (!gem)
1023 return -ENOENT;
1024 nvbo = nouveau_gem_object(gem);
1025
1026 nouveau_bo_sync_for_device(nvbo);
1027 drm_gem_object_put(gem);
1028 return 0;
1029 }
1030
1031 int
nouveau_gem_ioctl_info(struct drm_device * dev,void * data,struct drm_file * file_priv)1032 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
1033 struct drm_file *file_priv)
1034 {
1035 struct drm_nouveau_gem_info *req = data;
1036 struct drm_gem_object *gem;
1037 int ret;
1038
1039 gem = drm_gem_object_lookup(file_priv, req->handle);
1040 if (!gem)
1041 return -ENOENT;
1042
1043 ret = nouveau_gem_info(file_priv, gem, req);
1044 drm_gem_object_put(gem);
1045 return ret;
1046 }
1047
1048