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
42static 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(vm_flags: 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
64error_unlock:
65 dma_resv_unlock(obj: bo->base.resv);
66 return ret;
67}
68
69static 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
76void
77nouveau_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(bd: 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(obj: gem, sg: nvbo->bo.sg);
92
93 ttm_bo_put(bo: &nvbo->bo);
94
95 pm_runtime_mark_last_busy(dev);
96 pm_runtime_put_autosuspend(dev);
97}
98
99int
100nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
101{
102 struct nouveau_cli *cli = nouveau_cli(fpriv: file_priv);
103 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
104 struct nouveau_drm *drm = nouveau_bdev(bd: 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(bo: &nvbo->bo, interruptible: false, no_wait: 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);
135out:
136 ttm_bo_unreserve(bo: &nvbo->bo);
137 return ret;
138}
139
140struct nouveau_gem_object_unmap {
141 struct nouveau_cli_work work;
142 struct nouveau_vma *vma;
143};
144
145static void
146nouveau_gem_object_delete(struct nouveau_vma *vma)
147{
148 nouveau_fence_unref(&vma->fence);
149 nouveau_vma_del(&vma);
150}
151
152static void
153nouveau_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(vma: work->vma);
158 kfree(objp: work);
159}
160
161static void
162nouveau_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(entry: &vma->head);
168
169 if (!fence) {
170 nouveau_gem_object_delete(vma);
171 return;
172 }
173
174 if (!(work = kmalloc(size: 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
185void
186nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
187{
188 struct nouveau_cli *cli = nouveau_cli(fpriv: file_priv);
189 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
190 struct nouveau_drm *drm = nouveau_bdev(bd: 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(bo: &nvbo->bo, interruptible: false, no_wait: 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(bo: &nvbo->bo);
218}
219
220const 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
234int
235nouveau_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: &size, align: &align, domain, tile_mode,
256 tile_flags, internal: false);
257 if (IS_ERR(ptr: nvbo))
258 return PTR_ERR(ptr: 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(dev: drm->dev, obj: &nvbo->bo.base, size);
266 if (ret) {
267 drm_gem_object_release(obj: &nvbo->bo.base);
268 kfree(objp: nvbo);
269 return ret;
270 }
271
272 if (resv)
273 dma_resv_lock(obj: resv, NULL);
274
275 ret = nouveau_bo_init(nvbo, size, align, domain, NULL, robj: resv);
276
277 if (resv)
278 dma_resv_unlock(obj: 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(obj: nvbo->r_obj);
295 }
296
297 *pnvbo = nvbo;
298 return 0;
299}
300
301static int
302nouveau_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(fpriv: 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(n: 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(node: &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
341int
342nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
343 struct drm_file *file_priv)
344{
345 struct nouveau_cli *cli = nouveau_cli(fpriv: 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, size: req->info.size, align: req->align,
356 domain: req->info.domain, tile_mode: req->info.tile_mode,
357 tile_flags: req->info.tile_flags, pnvbo: &nvbo);
358 if (ret)
359 return ret;
360
361 ret = drm_gem_handle_create(file_priv, obj: &nvbo->bo.base,
362 handlep: &req->info.handle);
363 if (ret == 0) {
364 ret = nouveau_gem_info(file_priv, gem: &nvbo->bo.base, rep: &req->info);
365 if (ret)
366 drm_gem_handle_delete(filp: file_priv, handle: req->info.handle);
367 }
368
369 /* drop reference from allocate - handle holds it now */
370 drm_gem_object_put(obj: &nvbo->bo.base);
371 return ret;
372}
373
374static int
375nouveau_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, type: pref_domains, busy: valid_domains);
404
405 return 0;
406}
407
408struct validate_op {
409 struct list_head list;
410 struct ww_acquire_ctx ticket;
411};
412
413static void
414validate_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(head: &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, exclusive: !!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: &fence->base);
433 vma->fence = fence;
434 }
435 }
436
437 if (unlikely(nvbo->validate_mapped)) {
438 ttm_bo_kunmap(map: &nvbo->kmap);
439 nvbo->validate_mapped = false;
440 }
441
442 list_del(entry: &nvbo->entry);
443 nvbo->reserved_by = NULL;
444 ttm_bo_unreserve(bo: &nvbo->bo);
445 drm_gem_object_put(obj: &nvbo->bo.base);
446 }
447}
448
449static void
450validate_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(ctx: &op->ticket);
456}
457
458static int
459validate_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(fpriv: 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(ctx: &op->ticket, ww_class: &reservation_ww_class);
472retry:
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(filp: file_priv, handle: 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(obj: 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(obj: gem);
500 ret = -EINVAL;
501 break;
502 }
503
504 ret = ttm_bo_reserve(bo: &nvbo->bo, interruptible: true, no_wait: false, ticket: &op->ticket);
505 if (ret) {
506 list_splice_tail_init(list: &vram_list, head: &op->list);
507 list_splice_tail_init(list: &gart_list, head: &op->list);
508 list_splice_tail_init(list: &both_list, head: &op->list);
509 validate_fini_no_ticket(op, chan, NULL, NULL);
510 if (unlikely(ret == -EDEADLK)) {
511 ret = ttm_bo_reserve_slowpath(bo: &nvbo->bo, interruptible: true,
512 ticket: &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(new: &nvbo->entry, head: &both_list);
542 else
543 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
544 list_add_tail(new: &nvbo->entry, head: &vram_list);
545 else
546 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
547 list_add_tail(new: &nvbo->entry, head: &gart_list);
548 else {
549 NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
550 b->valid_domains);
551 list_add_tail(new: &nvbo->entry, head: &both_list);
552 ret = -EINVAL;
553 break;
554 }
555 if (nvbo == res_bo)
556 goto retry;
557 }
558
559 ww_acquire_done(ctx: &op->ticket);
560 list_splice_tail(list: &vram_list, head: &op->list);
561 list_splice_tail(list: &gart_list, head: &op->list);
562 list_splice_tail(list: &both_list, head: &op->list);
563 if (ret)
564 validate_fini(op, chan, NULL, NULL);
565 return ret;
566
567}
568
569static int
570validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
571 struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
572{
573 struct nouveau_drm *drm = chan->drm;
574 struct nouveau_bo *nvbo;
575 int ret, relocs = 0;
576
577 list_for_each_entry(nvbo, list, entry) {
578 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
579
580 ret = nouveau_gem_set_domain(gem: &nvbo->bo.base, read_domains: b->read_domains,
581 write_domains: b->write_domains,
582 valid_domains: b->valid_domains);
583 if (unlikely(ret)) {
584 NV_PRINTK(err, cli, "fail set_domain\n");
585 return ret;
586 }
587
588 ret = nouveau_bo_validate(nvbo, interruptible: true, no_wait_gpu: false);
589 if (unlikely(ret)) {
590 if (ret != -ERESTARTSYS)
591 NV_PRINTK(err, cli, "fail ttm_validate\n");
592 return ret;
593 }
594
595 ret = nouveau_fence_sync(nvbo, chan, exclusive: !!b->write_domains, intr: true);
596 if (unlikely(ret)) {
597 if (ret != -ERESTARTSYS)
598 NV_PRINTK(err, cli, "fail post-validate sync\n");
599 return ret;
600 }
601
602 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
603 if (nvbo->offset == b->presumed.offset &&
604 ((nvbo->bo.resource->mem_type == TTM_PL_VRAM &&
605 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
606 (nvbo->bo.resource->mem_type == TTM_PL_TT &&
607 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
608 continue;
609
610 if (nvbo->bo.resource->mem_type == TTM_PL_TT)
611 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
612 else
613 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
614 b->presumed.offset = nvbo->offset;
615 b->presumed.valid = 0;
616 relocs++;
617 }
618 }
619
620 return relocs;
621}
622
623static int
624nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
625 struct drm_file *file_priv,
626 struct drm_nouveau_gem_pushbuf_bo *pbbo,
627 int nr_buffers,
628 struct validate_op *op, bool *apply_relocs)
629{
630 struct nouveau_cli *cli = nouveau_cli(fpriv: file_priv);
631 int ret;
632
633 INIT_LIST_HEAD(list: &op->list);
634
635 if (nr_buffers == 0)
636 return 0;
637
638 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
639 if (unlikely(ret)) {
640 if (ret != -ERESTARTSYS)
641 NV_PRINTK(err, cli, "validate_init\n");
642 return ret;
643 }
644
645 ret = validate_list(chan, cli, list: &op->list, pbbo);
646 if (unlikely(ret < 0)) {
647 if (ret != -ERESTARTSYS)
648 NV_PRINTK(err, cli, "validating bo list\n");
649 validate_fini(op, chan, NULL, NULL);
650 return ret;
651 } else if (ret > 0) {
652 *apply_relocs = true;
653 }
654
655 return 0;
656}
657
658static int
659nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
660 struct drm_nouveau_gem_pushbuf *req,
661 struct drm_nouveau_gem_pushbuf_reloc *reloc,
662 struct drm_nouveau_gem_pushbuf_bo *bo)
663{
664 int ret = 0;
665 unsigned i;
666
667 for (i = 0; i < req->nr_relocs; i++) {
668 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
669 struct drm_nouveau_gem_pushbuf_bo *b;
670 struct nouveau_bo *nvbo;
671 uint32_t data;
672 long lret;
673
674 if (unlikely(r->bo_index >= req->nr_buffers)) {
675 NV_PRINTK(err, cli, "reloc bo index invalid\n");
676 ret = -EINVAL;
677 break;
678 }
679
680 b = &bo[r->bo_index];
681 if (b->presumed.valid)
682 continue;
683
684 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
685 NV_PRINTK(err, cli, "reloc container bo index invalid\n");
686 ret = -EINVAL;
687 break;
688 }
689 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
690
691 if (unlikely(r->reloc_bo_offset + 4 >
692 nvbo->bo.base.size)) {
693 NV_PRINTK(err, cli, "reloc outside of bo\n");
694 ret = -EINVAL;
695 break;
696 }
697
698 if (!nvbo->kmap.virtual) {
699 ret = ttm_bo_kmap(bo: &nvbo->bo, start_page: 0, PFN_UP(nvbo->bo.base.size),
700 map: &nvbo->kmap);
701 if (ret) {
702 NV_PRINTK(err, cli, "failed kmap for reloc\n");
703 break;
704 }
705 nvbo->validate_mapped = true;
706 }
707
708 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
709 data = b->presumed.offset + r->data;
710 else
711 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
712 data = (b->presumed.offset + r->data) >> 32;
713 else
714 data = r->data;
715
716 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
717 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
718 data |= r->tor;
719 else
720 data |= r->vor;
721 }
722
723 lret = dma_resv_wait_timeout(obj: nvbo->bo.base.resv,
724 usage: DMA_RESV_USAGE_BOOKKEEP,
725 intr: false, timeout: 15 * HZ);
726 if (!lret)
727 ret = -EBUSY;
728 else if (lret > 0)
729 ret = 0;
730 else
731 ret = lret;
732
733 if (ret) {
734 NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n",
735 ret);
736 break;
737 }
738
739 nouveau_bo_wr32(nvbo, index: r->reloc_bo_offset >> 2, val: data);
740 }
741
742 return ret;
743}
744
745int
746nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
747 struct drm_file *file_priv)
748{
749 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
750 struct nouveau_cli *cli = nouveau_cli(fpriv: file_priv);
751 struct nouveau_abi16_chan *temp;
752 struct nouveau_drm *drm = nouveau_drm(dev);
753 struct drm_nouveau_gem_pushbuf *req = data;
754 struct drm_nouveau_gem_pushbuf_push *push;
755 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
756 struct drm_nouveau_gem_pushbuf_bo *bo;
757 struct nouveau_channel *chan = NULL;
758 struct validate_op op;
759 struct nouveau_fence *fence = NULL;
760 int i, j, ret = 0;
761 bool do_reloc = false, sync = false;
762
763 if (unlikely(!abi16))
764 return -ENOMEM;
765
766 if (unlikely(nouveau_cli_uvmm(cli)))
767 return nouveau_abi16_put(abi16, -ENOSYS);
768
769 list_for_each_entry(temp, &abi16->channels, head) {
770 if (temp->chan->chid == req->channel) {
771 chan = temp->chan;
772 break;
773 }
774 }
775
776 if (!chan)
777 return nouveau_abi16_put(abi16, -ENOENT);
778 if (unlikely(atomic_read(&chan->killed)))
779 return nouveau_abi16_put(abi16, -ENODEV);
780
781 sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
782
783 req->vram_available = drm->gem.vram_available;
784 req->gart_available = drm->gem.gart_available;
785 if (unlikely(req->nr_push == 0))
786 goto out_next;
787
788 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
789 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
790 req->nr_push, NOUVEAU_GEM_MAX_PUSH);
791 return nouveau_abi16_put(abi16, -EINVAL);
792 }
793
794 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
795 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
796 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
797 return nouveau_abi16_put(abi16, -EINVAL);
798 }
799
800 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
801 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
802 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
803 return nouveau_abi16_put(abi16, -EINVAL);
804 }
805
806 push = u_memcpya(user: req->push, nmemb: req->nr_push, size: sizeof(*push));
807 if (IS_ERR(ptr: push))
808 return nouveau_abi16_put(abi16, PTR_ERR(ptr: push));
809
810 bo = u_memcpya(user: req->buffers, nmemb: req->nr_buffers, size: sizeof(*bo));
811 if (IS_ERR(ptr: bo)) {
812 u_free(addr: push);
813 return nouveau_abi16_put(abi16, PTR_ERR(ptr: bo));
814 }
815
816 /* Ensure all push buffers are on validate list */
817 for (i = 0; i < req->nr_push; i++) {
818 if (push[i].bo_index >= req->nr_buffers) {
819 NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
820 ret = -EINVAL;
821 goto out_prevalid;
822 }
823 }
824
825 /* Validate buffer list */
826revalidate:
827 ret = nouveau_gem_pushbuf_validate(chan, file_priv, pbbo: bo,
828 nr_buffers: req->nr_buffers, op: &op, apply_relocs: &do_reloc);
829 if (ret) {
830 if (ret != -ERESTARTSYS)
831 NV_PRINTK(err, cli, "validate: %d\n", ret);
832 goto out_prevalid;
833 }
834
835 /* Apply any relocations that are required */
836 if (do_reloc) {
837 if (!reloc) {
838 validate_fini(op: &op, chan, NULL, pbbo: bo);
839 reloc = u_memcpya(user: req->relocs, nmemb: req->nr_relocs, size: sizeof(*reloc));
840 if (IS_ERR(ptr: reloc)) {
841 ret = PTR_ERR(ptr: reloc);
842 goto out_prevalid;
843 }
844
845 goto revalidate;
846 }
847
848 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
849 if (ret) {
850 NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
851 goto out;
852 }
853 }
854
855 if (chan->dma.ib_max) {
856 ret = nouveau_dma_wait(chan, slots: req->nr_push + 1, size: 16);
857 if (ret) {
858 NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
859 goto out;
860 }
861
862 for (i = 0; i < req->nr_push; i++) {
863 struct nouveau_vma *vma = (void *)(unsigned long)
864 bo[push[i].bo_index].user_priv;
865 u64 addr = vma->addr + push[i].offset;
866 u32 length = push[i].length & ~NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
867 bool no_prefetch = push[i].length & NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
868
869 nv50_dma_push(chan, addr, length, no_prefetch);
870 }
871 } else
872 if (drm->client.device.info.chipset >= 0x25) {
873 ret = PUSH_WAIT(chan->chan.push, req->nr_push * 2);
874 if (ret) {
875 NV_PRINTK(err, cli, "cal_space: %d\n", ret);
876 goto out;
877 }
878
879 for (i = 0; i < req->nr_push; i++) {
880 struct nouveau_bo *nvbo = (void *)(unsigned long)
881 bo[push[i].bo_index].user_priv;
882
883 PUSH_CALL(chan->chan.push, nvbo->offset + push[i].offset);
884 PUSH_DATA(chan->chan.push, 0);
885 }
886 } else {
887 ret = PUSH_WAIT(chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
888 if (ret) {
889 NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
890 goto out;
891 }
892
893 for (i = 0; i < req->nr_push; i++) {
894 struct nouveau_bo *nvbo = (void *)(unsigned long)
895 bo[push[i].bo_index].user_priv;
896 uint32_t cmd;
897
898 cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
899 cmd |= 0x20000000;
900 if (unlikely(cmd != req->suffix0)) {
901 if (!nvbo->kmap.virtual) {
902 ret = ttm_bo_kmap(bo: &nvbo->bo, start_page: 0,
903 PFN_UP(nvbo->bo.base.size),
904 map: &nvbo->kmap);
905 if (ret) {
906 WIND_RING(chan);
907 goto out;
908 }
909 nvbo->validate_mapped = true;
910 }
911
912 nouveau_bo_wr32(nvbo, index: (push[i].offset +
913 push[i].length - 8) / 4, val: cmd);
914 }
915
916 PUSH_JUMP(chan->chan.push, nvbo->offset + push[i].offset);
917 PUSH_DATA(chan->chan.push, 0);
918 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
919 PUSH_DATA(chan->chan.push, 0);
920 }
921 }
922
923 ret = nouveau_fence_new(&fence, chan);
924 if (ret) {
925 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
926 WIND_RING(chan);
927 goto out;
928 }
929
930 if (sync) {
931 if (!(ret = nouveau_fence_wait(fence, lazy: false, intr: false))) {
932 if ((ret = dma_fence_get_status(fence: &fence->base)) == 1)
933 ret = 0;
934 }
935 }
936
937out:
938 validate_fini(op: &op, chan, fence, pbbo: bo);
939 nouveau_fence_unref(&fence);
940
941 if (do_reloc) {
942 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
943 u64_to_user_ptr(req->buffers);
944
945 for (i = 0; i < req->nr_buffers; i++) {
946 if (bo[i].presumed.valid)
947 continue;
948
949 if (copy_to_user(to: &upbbo[i].presumed, from: &bo[i].presumed,
950 n: sizeof(bo[i].presumed))) {
951 ret = -EFAULT;
952 break;
953 }
954 }
955 }
956out_prevalid:
957 if (!IS_ERR(ptr: reloc))
958 u_free(addr: reloc);
959 u_free(addr: bo);
960 u_free(addr: push);
961
962out_next:
963 if (chan->dma.ib_max) {
964 req->suffix0 = 0x00000000;
965 req->suffix1 = 0x00000000;
966 } else
967 if (drm->client.device.info.chipset >= 0x25) {
968 req->suffix0 = 0x00020000;
969 req->suffix1 = 0x00000000;
970 } else {
971 req->suffix0 = 0x20000000 |
972 (chan->push.addr + ((chan->dma.cur + 2) << 2));
973 req->suffix1 = 0x00000000;
974 }
975
976 return nouveau_abi16_put(abi16, ret);
977}
978
979int
980nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
981 struct drm_file *file_priv)
982{
983 struct drm_nouveau_gem_cpu_prep *req = data;
984 struct drm_gem_object *gem;
985 struct nouveau_bo *nvbo;
986 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
987 bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
988 long lret;
989 int ret;
990
991 gem = drm_gem_object_lookup(filp: file_priv, handle: req->handle);
992 if (!gem)
993 return -ENOENT;
994 nvbo = nouveau_gem_object(gem);
995
996 lret = dma_resv_wait_timeout(obj: nvbo->bo.base.resv,
997 usage: dma_resv_usage_rw(write), intr: true,
998 timeout: no_wait ? 0 : 30 * HZ);
999 if (!lret)
1000 ret = -EBUSY;
1001 else if (lret > 0)
1002 ret = 0;
1003 else
1004 ret = lret;
1005
1006 nouveau_bo_sync_for_cpu(nvbo);
1007 drm_gem_object_put(obj: gem);
1008
1009 return ret;
1010}
1011
1012int
1013nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
1014 struct drm_file *file_priv)
1015{
1016 struct drm_nouveau_gem_cpu_fini *req = data;
1017 struct drm_gem_object *gem;
1018 struct nouveau_bo *nvbo;
1019
1020 gem = drm_gem_object_lookup(filp: file_priv, handle: req->handle);
1021 if (!gem)
1022 return -ENOENT;
1023 nvbo = nouveau_gem_object(gem);
1024
1025 nouveau_bo_sync_for_device(nvbo);
1026 drm_gem_object_put(obj: gem);
1027 return 0;
1028}
1029
1030int
1031nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
1032 struct drm_file *file_priv)
1033{
1034 struct drm_nouveau_gem_info *req = data;
1035 struct drm_gem_object *gem;
1036 int ret;
1037
1038 gem = drm_gem_object_lookup(filp: file_priv, handle: req->handle);
1039 if (!gem)
1040 return -ENOENT;
1041
1042 ret = nouveau_gem_info(file_priv, gem, rep: req);
1043 drm_gem_object_put(obj: gem);
1044 return ret;
1045}
1046
1047

source code of linux/drivers/gpu/drm/nouveau/nouveau_gem.c