1 /* $NetBSD: nouveau_gem.c,v 1.14 2022/05/31 00:17:10 riastradh Exp $ */
2
3 /*
4 * Copyright (C) 2008 Ben Skeggs.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining
8 * a copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sublicense, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial
17 * portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
23 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 */
28
29 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: nouveau_gem.c,v 1.14 2022/05/31 00:17:10 riastradh Exp $");
31
32 #include <asm/uaccess.h>
33
34 #include "nouveau_drv.h"
35 #include "nouveau_dma.h"
36 #include "nouveau_fence.h"
37 #include "nouveau_abi16.h"
38
39 #include "nouveau_ttm.h"
40 #include "nouveau_gem.h"
41 #include "nouveau_mem.h"
42 #include "nouveau_vmm.h"
43
44 #include <nvif/class.h>
45
46 #include <linux/nbsd-namespace.h>
47
48 void
nouveau_gem_object_del(struct drm_gem_object * gem)49 nouveau_gem_object_del(struct drm_gem_object *gem)
50 {
51 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
52 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
53 struct device *dev = drm->dev->dev;
54 int ret;
55
56 ret = pm_runtime_get_sync(dev);
57 if (WARN_ON(ret < 0 && ret != -EACCES))
58 return;
59
60 if (gem->import_attach)
61 drm_prime_gem_destroy(gem, nvbo->bo.sg);
62
63 ttm_bo_put(&nvbo->bo);
64
65 pm_runtime_mark_last_busy(dev);
66 pm_runtime_put_autosuspend(dev);
67 }
68
69 int
nouveau_gem_object_open(struct drm_gem_object * gem,struct drm_file * file_priv)70 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
71 {
72 struct nouveau_cli *cli = nouveau_cli(file_priv);
73 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
74 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
75 struct device *dev = drm->dev->dev;
76 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
77 struct nouveau_vma *vma;
78 int ret;
79
80 if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
81 return 0;
82
83 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
84 if (ret)
85 return ret;
86
87 ret = pm_runtime_get_sync(dev);
88 if (ret < 0 && ret != -EACCES)
89 goto out;
90
91 ret = nouveau_vma_new(nvbo, vmm, &vma);
92 pm_runtime_mark_last_busy(dev);
93 pm_runtime_put_autosuspend(dev);
94 out:
95 ttm_bo_unreserve(&nvbo->bo);
96 return ret;
97 }
98
99 struct nouveau_gem_object_unmap {
100 struct nouveau_cli_work work;
101 struct nouveau_vma *vma;
102 };
103
104 static void
nouveau_gem_object_delete(struct nouveau_vma * vma)105 nouveau_gem_object_delete(struct nouveau_vma *vma)
106 {
107 nouveau_fence_unref(&vma->fence);
108 nouveau_vma_del(&vma);
109 }
110
111 static void
nouveau_gem_object_delete_work(struct nouveau_cli_work * w)112 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
113 {
114 struct nouveau_gem_object_unmap *work =
115 container_of(w, typeof(*work), work);
116 nouveau_gem_object_delete(work->vma);
117 kfree(work);
118 }
119
120 static void
nouveau_gem_object_unmap(struct nouveau_bo * nvbo,struct nouveau_vma * vma)121 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
122 {
123 struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
124 struct nouveau_gem_object_unmap *work;
125
126 list_del_init(&vma->head);
127
128 if (!fence) {
129 nouveau_gem_object_delete(vma);
130 return;
131 }
132
133 if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
134 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
135 nouveau_gem_object_delete(vma);
136 return;
137 }
138
139 work->work.func = nouveau_gem_object_delete_work;
140 work->vma = vma;
141 nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
142 }
143
144 void
nouveau_gem_object_close(struct drm_gem_object * gem,struct drm_file * file_priv)145 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
146 {
147 struct nouveau_cli *cli = nouveau_cli(file_priv);
148 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
149 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
150 struct device *dev = drm->dev->dev;
151 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : & cli->vmm;
152 struct nouveau_vma *vma;
153 int ret;
154
155 if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
156 return;
157
158 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
159 if (ret)
160 return;
161
162 vma = nouveau_vma_find(nvbo, vmm);
163 if (vma) {
164 if (--vma->refs == 0) {
165 ret = pm_runtime_get_sync(dev);
166 if (!WARN_ON(ret < 0 && ret != -EACCES)) {
167 nouveau_gem_object_unmap(nvbo, vma);
168 pm_runtime_mark_last_busy(dev);
169 pm_runtime_put_autosuspend(dev);
170 }
171 }
172 }
173 ttm_bo_unreserve(&nvbo->bo);
174 }
175
176 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)177 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
178 uint32_t tile_mode, uint32_t tile_flags,
179 struct nouveau_bo **pnvbo)
180 {
181 struct nouveau_drm *drm = cli->drm;
182 struct nouveau_bo *nvbo;
183 u32 flags = 0;
184 int ret;
185
186 if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
187 flags |= TTM_PL_FLAG_VRAM;
188 if (domain & NOUVEAU_GEM_DOMAIN_GART)
189 flags |= TTM_PL_FLAG_TT;
190 if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
191 flags |= TTM_PL_FLAG_SYSTEM;
192
193 if (domain & NOUVEAU_GEM_DOMAIN_COHERENT)
194 flags |= TTM_PL_FLAG_UNCACHED;
195
196 nvbo = nouveau_bo_alloc(cli, &size, &align, flags, tile_mode,
197 tile_flags);
198 if (IS_ERR(nvbo))
199 return PTR_ERR(nvbo);
200
201 /* Initialize the embedded gem-object. We return a single gem-reference
202 * to the caller, instead of a normal nouveau_bo ttm reference. */
203 ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
204 if (ret) {
205 kfree(nvbo);
206 return ret;
207 }
208
209 ret = nouveau_bo_init(nvbo, size, align, flags, NULL, NULL);
210 if (ret) {
211 /* XXX note: if this fails it kfrees nvbo */
212 return ret;
213 }
214
215 /* we restrict allowed domains on nv50+ to only the types
216 * that were requested at creation time. not possibly on
217 * earlier chips without busting the ABI.
218 */
219 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
220 NOUVEAU_GEM_DOMAIN_GART;
221 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
222 nvbo->valid_domains &= domain;
223
224 #ifndef __NetBSD__ /* XXX Let TTM swap; skip GEM like radeon. */
225 nvbo->bo.persistent_swap_storage = nvbo->bo.base.filp;
226 #endif
227 *pnvbo = nvbo;
228 return 0;
229 }
230
231 static int
nouveau_gem_info(struct drm_file * file_priv,struct drm_gem_object * gem,struct drm_nouveau_gem_info * rep)232 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
233 struct drm_nouveau_gem_info *rep)
234 {
235 struct nouveau_cli *cli = nouveau_cli(file_priv);
236 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
237 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
238 struct nouveau_vma *vma;
239
240 if (is_power_of_2(nvbo->valid_domains))
241 rep->domain = nvbo->valid_domains;
242 else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
243 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
244 else
245 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
246 rep->offset = nvbo->bo.offset;
247 if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
248 vma = nouveau_vma_find(nvbo, vmm);
249 if (!vma)
250 return -EINVAL;
251
252 rep->offset = vma->addr;
253 }
254
255 rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
256 rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
257 rep->tile_mode = nvbo->mode;
258 rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
259 if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
260 rep->tile_flags |= nvbo->kind << 8;
261 else
262 if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
263 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
264 else
265 rep->tile_flags |= nvbo->zeta;
266 return 0;
267 }
268
269 int
nouveau_gem_ioctl_new(struct drm_device * dev,void * data,struct drm_file * file_priv)270 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
271 struct drm_file *file_priv)
272 {
273 struct nouveau_cli *cli = nouveau_cli(file_priv);
274 struct drm_nouveau_gem_new *req = data;
275 struct nouveau_bo *nvbo = NULL;
276 int ret = 0;
277
278 ret = nouveau_gem_new(cli, req->info.size, req->align,
279 req->info.domain, req->info.tile_mode,
280 req->info.tile_flags, &nvbo);
281 if (ret)
282 return ret;
283
284 ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
285 &req->info.handle);
286 if (ret == 0) {
287 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
288 if (ret)
289 drm_gem_handle_delete(file_priv, req->info.handle);
290 }
291
292 /* drop reference from allocate - handle holds it now */
293 drm_gem_object_put_unlocked(&nvbo->bo.base);
294 return ret;
295 }
296
297 static int
nouveau_gem_set_domain(struct drm_gem_object * gem,uint32_t read_domains,uint32_t write_domains,uint32_t valid_domains)298 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
299 uint32_t write_domains, uint32_t valid_domains)
300 {
301 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
302 struct ttm_buffer_object *bo = &nvbo->bo;
303 uint32_t domains = valid_domains & nvbo->valid_domains &
304 (write_domains ? write_domains : read_domains);
305 uint32_t pref_flags = 0, valid_flags = 0;
306
307 if (!domains)
308 return -EINVAL;
309
310 if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
311 valid_flags |= TTM_PL_FLAG_VRAM;
312
313 if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
314 valid_flags |= TTM_PL_FLAG_TT;
315
316 if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
317 bo->mem.mem_type == TTM_PL_VRAM)
318 pref_flags |= TTM_PL_FLAG_VRAM;
319
320 else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
321 bo->mem.mem_type == TTM_PL_TT)
322 pref_flags |= TTM_PL_FLAG_TT;
323
324 else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
325 pref_flags |= TTM_PL_FLAG_VRAM;
326
327 else
328 pref_flags |= TTM_PL_FLAG_TT;
329
330 nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
331
332 return 0;
333 }
334
335 struct validate_op {
336 struct list_head list;
337 struct ww_acquire_ctx ticket;
338 };
339
340 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)341 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
342 struct nouveau_fence *fence,
343 struct drm_nouveau_gem_pushbuf_bo *pbbo)
344 {
345 struct nouveau_bo *nvbo;
346 struct drm_nouveau_gem_pushbuf_bo *b;
347
348 while (!list_empty(&op->list)) {
349 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
350 b = &pbbo[nvbo->pbbo_index];
351
352 if (likely(fence)) {
353 nouveau_bo_fence(nvbo, fence, !!b->write_domains);
354
355 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
356 struct nouveau_vma *vma =
357 (void *)(unsigned long)b->user_priv;
358 nouveau_fence_unref(&vma->fence);
359 dma_fence_get(&fence->base);
360 vma->fence = fence;
361 }
362 }
363
364 if (unlikely(nvbo->validate_mapped)) {
365 ttm_bo_kunmap(&nvbo->kmap);
366 nvbo->validate_mapped = false;
367 }
368
369 list_del(&nvbo->entry);
370 nvbo->reserved_by = NULL;
371 ttm_bo_unreserve(&nvbo->bo);
372 drm_gem_object_put_unlocked(&nvbo->bo.base);
373 }
374 }
375
376 static void
validate_fini(struct validate_op * op,struct nouveau_channel * chan,struct nouveau_fence * fence,struct drm_nouveau_gem_pushbuf_bo * pbbo)377 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
378 struct nouveau_fence *fence,
379 struct drm_nouveau_gem_pushbuf_bo *pbbo)
380 {
381 validate_fini_no_ticket(op, chan, fence, pbbo);
382 ww_acquire_fini(&op->ticket);
383 }
384
385 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)386 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
387 struct drm_nouveau_gem_pushbuf_bo *pbbo,
388 int nr_buffers, struct validate_op *op)
389 {
390 struct nouveau_cli *cli = nouveau_cli(file_priv);
391 int trycnt = 0;
392 int ret = -EINVAL, i;
393 struct nouveau_bo *res_bo = NULL;
394 LIST_HEAD(gart_list);
395 LIST_HEAD(vram_list);
396 LIST_HEAD(both_list);
397
398 ww_acquire_init(&op->ticket, &reservation_ww_class);
399 retry:
400 if (++trycnt > 100000) {
401 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
402 return -EINVAL;
403 }
404
405 for (i = 0; i < nr_buffers; i++) {
406 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
407 struct drm_gem_object *gem;
408 struct nouveau_bo *nvbo;
409
410 gem = drm_gem_object_lookup(file_priv, b->handle);
411 if (!gem) {
412 NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
413 ret = -ENOENT;
414 break;
415 }
416 nvbo = nouveau_gem_object(gem);
417 if (nvbo == res_bo) {
418 res_bo = NULL;
419 drm_gem_object_put_unlocked(gem);
420 continue;
421 }
422
423 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
424 NV_PRINTK(err, cli, "multiple instances of buffer %d on "
425 "validation list\n", b->handle);
426 drm_gem_object_put_unlocked(gem);
427 ret = -EINVAL;
428 break;
429 }
430
431 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
432 if (ret) {
433 list_splice_tail_init(&vram_list, &op->list);
434 list_splice_tail_init(&gart_list, &op->list);
435 list_splice_tail_init(&both_list, &op->list);
436 validate_fini_no_ticket(op, chan, NULL, NULL);
437 if (unlikely(ret == -EDEADLK)) {
438 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
439 &op->ticket);
440 if (!ret)
441 res_bo = nvbo;
442 }
443 if (unlikely(ret)) {
444 if (ret != -ERESTARTSYS)
445 NV_PRINTK(err, cli, "fail reserve\n");
446 break;
447 }
448 }
449
450 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
451 struct nouveau_vmm *vmm = chan->vmm;
452 struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
453 if (!vma) {
454 NV_PRINTK(err, cli, "vma not found!\n");
455 ret = -EINVAL;
456 break;
457 }
458
459 b->user_priv = (uint64_t)(unsigned long)vma;
460 } else {
461 b->user_priv = (uint64_t)(unsigned long)nvbo;
462 }
463
464 nvbo->reserved_by = file_priv;
465 nvbo->pbbo_index = i;
466 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
467 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
468 list_add_tail(&nvbo->entry, &both_list);
469 else
470 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
471 list_add_tail(&nvbo->entry, &vram_list);
472 else
473 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
474 list_add_tail(&nvbo->entry, &gart_list);
475 else {
476 NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
477 b->valid_domains);
478 list_add_tail(&nvbo->entry, &both_list);
479 ret = -EINVAL;
480 break;
481 }
482 if (nvbo == res_bo)
483 goto retry;
484 }
485
486 ww_acquire_done(&op->ticket);
487 list_splice_tail(&vram_list, &op->list);
488 list_splice_tail(&gart_list, &op->list);
489 list_splice_tail(&both_list, &op->list);
490 if (ret)
491 validate_fini(op, chan, NULL, NULL);
492 return ret;
493
494 }
495
496 #ifdef __NetBSD__ /* XXX yargleblargh */
497 # define __force
498 #endif
499
500 static int
validate_list(struct nouveau_channel * chan,struct nouveau_cli * cli,struct list_head * list,struct drm_nouveau_gem_pushbuf_bo * pbbo)501 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
502 struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
503 {
504 struct nouveau_drm *drm = chan->drm;
505 struct nouveau_bo *nvbo;
506 int ret, relocs = 0;
507
508 list_for_each_entry(nvbo, list, entry) {
509 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
510
511 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
512 b->write_domains,
513 b->valid_domains);
514 if (unlikely(ret)) {
515 NV_PRINTK(err, cli, "fail set_domain\n");
516 return ret;
517 }
518
519 ret = nouveau_bo_validate(nvbo, true, false);
520 if (unlikely(ret)) {
521 if (ret != -ERESTARTSYS)
522 NV_PRINTK(err, cli, "fail ttm_validate\n");
523 return ret;
524 }
525
526 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
527 if (unlikely(ret)) {
528 if (ret != -ERESTARTSYS)
529 NV_PRINTK(err, cli, "fail post-validate sync\n");
530 return ret;
531 }
532
533 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
534 if (nvbo->bo.offset == b->presumed.offset &&
535 ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
536 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
537 (nvbo->bo.mem.mem_type == TTM_PL_TT &&
538 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
539 continue;
540
541 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
542 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
543 else
544 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
545 b->presumed.offset = nvbo->bo.offset;
546 b->presumed.valid = 0;
547 relocs++;
548 }
549 }
550
551 return relocs;
552 }
553
554 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)555 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
556 struct drm_file *file_priv,
557 struct drm_nouveau_gem_pushbuf_bo *pbbo,
558 int nr_buffers,
559 struct validate_op *op, bool *apply_relocs)
560 {
561 struct nouveau_cli *cli = nouveau_cli(file_priv);
562 int ret;
563
564 INIT_LIST_HEAD(&op->list);
565
566 if (nr_buffers == 0)
567 return 0;
568
569 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
570 if (unlikely(ret)) {
571 if (ret != -ERESTARTSYS)
572 NV_PRINTK(err, cli, "validate_init\n");
573 return ret;
574 }
575
576 ret = validate_list(chan, cli, &op->list, pbbo);
577 if (unlikely(ret < 0)) {
578 if (ret != -ERESTARTSYS)
579 NV_PRINTK(err, cli, "validating bo list\n");
580 validate_fini(op, chan, NULL, NULL);
581 return ret;
582 }
583 *apply_relocs = ret;
584 return 0;
585 }
586
587 static inline void
u_free(void * addr)588 u_free(void *addr)
589 {
590 kvfree(addr);
591 }
592
593 static inline void *
u_memcpya(uint64_t user,unsigned nmemb,unsigned size)594 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
595 {
596 void *mem;
597 void __user *userptr = (void __force __user *)(uintptr_t)user;
598
599 size *= nmemb;
600
601 mem = kvmalloc(size, GFP_KERNEL);
602 if (!mem)
603 return ERR_PTR(-ENOMEM);
604
605 if (copy_from_user(mem, userptr, size)) {
606 u_free(mem);
607 return ERR_PTR(-EFAULT);
608 }
609
610 return mem;
611 }
612
613 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)614 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
615 struct drm_nouveau_gem_pushbuf *req,
616 struct drm_nouveau_gem_pushbuf_reloc *reloc,
617 struct drm_nouveau_gem_pushbuf_bo *bo)
618 {
619 int ret = 0;
620 unsigned i;
621
622 for (i = 0; i < req->nr_relocs; i++) {
623 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
624 struct drm_nouveau_gem_pushbuf_bo *b;
625 struct nouveau_bo *nvbo;
626 uint32_t data;
627
628 if (unlikely(r->bo_index >= req->nr_buffers)) {
629 NV_PRINTK(err, cli, "reloc bo index invalid\n");
630 ret = -EINVAL;
631 break;
632 }
633
634 b = &bo[r->bo_index];
635 if (b->presumed.valid)
636 continue;
637
638 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
639 NV_PRINTK(err, cli, "reloc container bo index invalid\n");
640 ret = -EINVAL;
641 break;
642 }
643 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
644
645 if (unlikely(r->reloc_bo_offset + 4 >
646 nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
647 NV_PRINTK(err, cli, "reloc outside of bo\n");
648 ret = -EINVAL;
649 break;
650 }
651
652 if (!nvbo->kmap.virtual) {
653 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
654 &nvbo->kmap);
655 if (ret) {
656 NV_PRINTK(err, cli, "failed kmap for reloc\n");
657 break;
658 }
659 nvbo->validate_mapped = true;
660 }
661
662 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
663 data = b->presumed.offset + r->data;
664 else
665 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
666 data = (b->presumed.offset + r->data) >> 32;
667 else
668 data = r->data;
669
670 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
671 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
672 data |= r->tor;
673 else
674 data |= r->vor;
675 }
676
677 ret = ttm_bo_wait(&nvbo->bo, false, false);
678 if (ret) {
679 NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
680 break;
681 }
682
683 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
684 }
685
686 u_free(reloc);
687 return ret;
688 }
689
690 int
nouveau_gem_ioctl_pushbuf(struct drm_device * dev,void * data,struct drm_file * file_priv)691 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
692 struct drm_file *file_priv)
693 {
694 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
695 struct nouveau_cli *cli = nouveau_cli(file_priv);
696 struct nouveau_abi16_chan *temp;
697 struct nouveau_drm *drm = nouveau_drm(dev);
698 struct drm_nouveau_gem_pushbuf *req = data;
699 struct drm_nouveau_gem_pushbuf_push *push;
700 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
701 struct drm_nouveau_gem_pushbuf_bo *bo;
702 struct nouveau_channel *chan = NULL;
703 struct validate_op op;
704 struct nouveau_fence *fence = NULL;
705 int i, j, ret = 0;
706 bool do_reloc = false, sync = false;
707
708 if (unlikely(!abi16))
709 return -ENOMEM;
710
711 list_for_each_entry(temp, &abi16->channels, head) {
712 if (temp->chan->chid == req->channel) {
713 chan = temp->chan;
714 break;
715 }
716 }
717
718 if (!chan)
719 return nouveau_abi16_put(abi16, -ENOENT);
720 if (unlikely(atomic_read(&chan->killed)))
721 return nouveau_abi16_put(abi16, -ENODEV);
722
723 sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
724
725 req->vram_available = drm->gem.vram_available;
726 req->gart_available = drm->gem.gart_available;
727 if (unlikely(req->nr_push == 0))
728 goto out_next;
729
730 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
731 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
732 req->nr_push, NOUVEAU_GEM_MAX_PUSH);
733 return nouveau_abi16_put(abi16, -EINVAL);
734 }
735
736 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
737 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
738 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
739 return nouveau_abi16_put(abi16, -EINVAL);
740 }
741
742 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
743 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
744 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
745 return nouveau_abi16_put(abi16, -EINVAL);
746 }
747
748 push = u_memcpya(req->push, req->nr_push, sizeof(*push));
749 if (IS_ERR(push))
750 return nouveau_abi16_put(abi16, PTR_ERR(push));
751
752 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
753 if (IS_ERR(bo)) {
754 u_free(push);
755 return nouveau_abi16_put(abi16, PTR_ERR(bo));
756 }
757
758 /* Ensure all push buffers are on validate list */
759 for (i = 0; i < req->nr_push; i++) {
760 if (push[i].bo_index >= req->nr_buffers) {
761 NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
762 ret = -EINVAL;
763 goto out_prevalid;
764 }
765 }
766
767 /* Validate buffer list */
768 revalidate:
769 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
770 req->nr_buffers, &op, &do_reloc);
771 if (ret) {
772 if (ret != -ERESTARTSYS)
773 NV_PRINTK(err, cli, "validate: %d\n", ret);
774 goto out_prevalid;
775 }
776
777 /* Apply any relocations that are required */
778 if (do_reloc) {
779 if (!reloc) {
780 validate_fini(&op, chan, NULL, bo);
781 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
782 if (IS_ERR(reloc)) {
783 ret = PTR_ERR(reloc);
784 goto out_prevalid;
785 }
786
787 goto revalidate;
788 }
789
790 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
791 if (ret) {
792 NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
793 goto out;
794 }
795 }
796
797 if (chan->dma.ib_max) {
798 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
799 if (ret) {
800 NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
801 goto out;
802 }
803
804 for (i = 0; i < req->nr_push; i++) {
805 struct nouveau_vma *vma = (void *)(unsigned long)
806 bo[push[i].bo_index].user_priv;
807
808 nv50_dma_push(chan, vma->addr + push[i].offset,
809 push[i].length);
810 }
811 } else
812 if (drm->client.device.info.chipset >= 0x25) {
813 ret = RING_SPACE(chan, req->nr_push * 2);
814 if (ret) {
815 NV_PRINTK(err, cli, "cal_space: %d\n", ret);
816 goto out;
817 }
818
819 for (i = 0; i < req->nr_push; i++) {
820 struct nouveau_bo *nvbo = (void *)(unsigned long)
821 bo[push[i].bo_index].user_priv;
822
823 OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
824 OUT_RING(chan, 0);
825 }
826 } else {
827 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
828 if (ret) {
829 NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
830 goto out;
831 }
832
833 for (i = 0; i < req->nr_push; i++) {
834 struct nouveau_bo *nvbo = (void *)(unsigned long)
835 bo[push[i].bo_index].user_priv;
836 uint32_t cmd;
837
838 cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
839 cmd |= 0x20000000;
840 if (unlikely(cmd != req->suffix0)) {
841 if (!nvbo->kmap.virtual) {
842 ret = ttm_bo_kmap(&nvbo->bo, 0,
843 nvbo->bo.mem.
844 num_pages,
845 &nvbo->kmap);
846 if (ret) {
847 WIND_RING(chan);
848 goto out;
849 }
850 nvbo->validate_mapped = true;
851 }
852
853 nouveau_bo_wr32(nvbo, (push[i].offset +
854 push[i].length - 8) / 4, cmd);
855 }
856
857 OUT_RING(chan, 0x20000000 |
858 (nvbo->bo.offset + push[i].offset));
859 OUT_RING(chan, 0);
860 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
861 OUT_RING(chan, 0);
862 }
863 }
864
865 ret = nouveau_fence_new(chan, false, &fence);
866 if (ret) {
867 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
868 WIND_RING(chan);
869 goto out;
870 }
871
872 if (sync) {
873 if (!(ret = nouveau_fence_wait(fence, false, false))) {
874 if ((ret = dma_fence_get_status(&fence->base)) == 1)
875 ret = 0;
876 }
877 }
878
879 out:
880 validate_fini(&op, chan, fence, bo);
881 nouveau_fence_unref(&fence);
882
883 if (do_reloc) {
884 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
885 u64_to_user_ptr(req->buffers);
886
887 for (i = 0; i < req->nr_buffers; i++) {
888 if (bo[i].presumed.valid)
889 continue;
890
891 if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
892 sizeof(bo[i].presumed))) {
893 ret = -EFAULT;
894 break;
895 }
896 }
897 u_free(reloc);
898 }
899 out_prevalid:
900 u_free(bo);
901 u_free(push);
902
903 out_next:
904 if (chan->dma.ib_max) {
905 req->suffix0 = 0x00000000;
906 req->suffix1 = 0x00000000;
907 } else
908 if (drm->client.device.info.chipset >= 0x25) {
909 req->suffix0 = 0x00020000;
910 req->suffix1 = 0x00000000;
911 } else {
912 req->suffix0 = 0x20000000 |
913 (chan->push.addr + ((chan->dma.cur + 2) << 2));
914 req->suffix1 = 0x00000000;
915 }
916
917 return nouveau_abi16_put(abi16, ret);
918 }
919
920 int
nouveau_gem_ioctl_cpu_prep(struct drm_device * dev,void * data,struct drm_file * file_priv)921 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
922 struct drm_file *file_priv)
923 {
924 struct drm_nouveau_gem_cpu_prep *req = data;
925 struct drm_gem_object *gem;
926 struct nouveau_bo *nvbo;
927 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
928 bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
929 long lret;
930 int ret;
931
932 gem = drm_gem_object_lookup(file_priv, req->handle);
933 if (!gem)
934 return -ENOENT;
935 nvbo = nouveau_gem_object(gem);
936
937 lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
938 no_wait ? 0 : 30 * HZ);
939 if (!lret)
940 ret = -EBUSY;
941 else if (lret > 0)
942 ret = 0;
943 else
944 ret = lret;
945
946 nouveau_bo_sync_for_cpu(nvbo);
947 drm_gem_object_put_unlocked(gem);
948
949 return ret;
950 }
951
952 int
nouveau_gem_ioctl_cpu_fini(struct drm_device * dev,void * data,struct drm_file * file_priv)953 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
954 struct drm_file *file_priv)
955 {
956 struct drm_nouveau_gem_cpu_fini *req = data;
957 struct drm_gem_object *gem;
958 struct nouveau_bo *nvbo;
959
960 gem = drm_gem_object_lookup(file_priv, req->handle);
961 if (!gem)
962 return -ENOENT;
963 nvbo = nouveau_gem_object(gem);
964
965 nouveau_bo_sync_for_device(nvbo);
966 drm_gem_object_put_unlocked(gem);
967 return 0;
968 }
969
970 int
nouveau_gem_ioctl_info(struct drm_device * dev,void * data,struct drm_file * file_priv)971 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
972 struct drm_file *file_priv)
973 {
974 struct drm_nouveau_gem_info *req = data;
975 struct drm_gem_object *gem;
976 int ret;
977
978 gem = drm_gem_object_lookup(file_priv, req->handle);
979 if (!gem)
980 return -ENOENT;
981
982 ret = nouveau_gem_info(file_priv, gem, req);
983 drm_gem_object_put_unlocked(gem);
984 return ret;
985 }
986
987