1 /* $NetBSD: nouveau_gem.c,v 1.4 2016/01/29 23:58:22 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 1.4 2016/01/29 23:58:22 riastradh Exp $");
31
32 #include <subdev/fb.h>
33
34 #include <linux/err.h> /* XXX */
35
36 #include "nouveau_drm.h"
37 #include "nouveau_dma.h"
38 #include "nouveau_fence.h"
39 #include "nouveau_abi16.h"
40
41 #include "nouveau_ttm.h"
42 #include "nouveau_gem.h"
43
44 void
nouveau_gem_object_del(struct drm_gem_object * gem)45 nouveau_gem_object_del(struct drm_gem_object *gem)
46 {
47 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
48 struct ttm_buffer_object *bo = &nvbo->bo;
49
50 #ifndef __NetBSD__ /* XXX drm prime */
51 if (gem->import_attach)
52 drm_prime_gem_destroy(gem, nvbo->bo.sg);
53 #endif
54
55 drm_gem_object_release(gem);
56
57 /* reset filp so nouveau_bo_del_ttm() can test for it */
58 #ifdef __NetBSD__
59 /* XXX Whattakludge! */
60 gem->gemo_shm_uao = NULL;
61 #else
62 gem->filp = NULL;
63 #endif
64 ttm_bo_unref(&bo);
65 }
66
67 int
nouveau_gem_object_open(struct drm_gem_object * gem,struct drm_file * file_priv)68 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
69 {
70 struct nouveau_cli *cli = nouveau_cli(file_priv);
71 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
72 struct nouveau_vma *vma;
73 int ret;
74
75 if (!cli->base.vm)
76 return 0;
77
78 ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
79 if (ret)
80 return ret;
81
82 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
83 if (!vma) {
84 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
85 if (!vma) {
86 ret = -ENOMEM;
87 goto out;
88 }
89
90 ret = nouveau_bo_vma_add(nvbo, cli->base.vm, vma);
91 if (ret) {
92 kfree(vma);
93 goto out;
94 }
95 } else {
96 vma->refcount++;
97 }
98
99 out:
100 ttm_bo_unreserve(&nvbo->bo);
101 return ret;
102 }
103
104 static void
nouveau_gem_object_delete(void * data)105 nouveau_gem_object_delete(void *data)
106 {
107 struct nouveau_vma *vma = data;
108 nouveau_vm_unmap(vma);
109 nouveau_vm_put(vma);
110 kfree(vma);
111 }
112
113 static void
nouveau_gem_object_unmap(struct nouveau_bo * nvbo,struct nouveau_vma * vma)114 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
115 {
116 const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM;
117 struct nouveau_fence *fence = NULL;
118
119 list_del(&vma->head);
120
121 if (mapped) {
122 spin_lock(&nvbo->bo.bdev->fence_lock);
123 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
124 spin_unlock(&nvbo->bo.bdev->fence_lock);
125 }
126
127 if (fence) {
128 nouveau_fence_work(fence, nouveau_gem_object_delete, vma);
129 } else {
130 if (mapped)
131 nouveau_vm_unmap(vma);
132 nouveau_vm_put(vma);
133 kfree(vma);
134 }
135 nouveau_fence_unref(&fence);
136 }
137
138 void
nouveau_gem_object_close(struct drm_gem_object * gem,struct drm_file * file_priv)139 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
140 {
141 struct nouveau_cli *cli = nouveau_cli(file_priv);
142 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
143 struct nouveau_vma *vma;
144 int ret;
145
146 if (!cli->base.vm)
147 return;
148
149 ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
150 if (ret)
151 return;
152
153 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
154 if (vma) {
155 if (--vma->refcount == 0)
156 nouveau_gem_object_unmap(nvbo, vma);
157 }
158 ttm_bo_unreserve(&nvbo->bo);
159 }
160
161 int
nouveau_gem_new(struct drm_device * dev,int size,int align,uint32_t domain,uint32_t tile_mode,uint32_t tile_flags,struct nouveau_bo ** pnvbo)162 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
163 uint32_t tile_mode, uint32_t tile_flags,
164 struct nouveau_bo **pnvbo)
165 {
166 struct nouveau_drm *drm = nouveau_drm(dev);
167 struct nouveau_bo *nvbo;
168 u32 flags = 0;
169 int ret;
170
171 if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
172 flags |= TTM_PL_FLAG_VRAM;
173 if (domain & NOUVEAU_GEM_DOMAIN_GART)
174 flags |= TTM_PL_FLAG_TT;
175 if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
176 flags |= TTM_PL_FLAG_SYSTEM;
177
178 ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
179 tile_flags, NULL, pnvbo);
180 if (ret)
181 return ret;
182 nvbo = *pnvbo;
183
184 /* we restrict allowed domains on nv50+ to only the types
185 * that were requested at creation time. not possibly on
186 * earlier chips without busting the ABI.
187 */
188 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
189 NOUVEAU_GEM_DOMAIN_GART;
190 if (nv_device(drm->device)->card_type >= NV_50)
191 nvbo->valid_domains &= domain;
192
193 /* Initialize the embedded gem-object. We return a single gem-reference
194 * to the caller, instead of a normal nouveau_bo ttm reference. */
195 ret = drm_gem_object_init(dev, &nvbo->gem, nvbo->bo.mem.size);
196 if (ret) {
197 nouveau_bo_ref(NULL, pnvbo);
198 return -ENOMEM;
199 }
200
201 #ifndef __NetBSD__ /* XXX Let TTM swap; skip GEM like radeon. */
202 nvbo->bo.persistent_swap_storage = nvbo->gem.filp;
203 #endif
204 return 0;
205 }
206
207 static int
nouveau_gem_info(struct drm_file * file_priv,struct drm_gem_object * gem,struct drm_nouveau_gem_info * rep)208 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
209 struct drm_nouveau_gem_info *rep)
210 {
211 struct nouveau_cli *cli = nouveau_cli(file_priv);
212 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
213 struct nouveau_vma *vma;
214
215 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
216 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
217 else
218 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
219
220 rep->offset = nvbo->bo.offset;
221 if (cli->base.vm) {
222 vma = nouveau_bo_vma_find(nvbo, cli->base.vm);
223 if (!vma)
224 return -EINVAL;
225
226 rep->offset = vma->offset;
227 }
228
229 rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
230 rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.vma_node);
231 rep->tile_mode = nvbo->tile_mode;
232 rep->tile_flags = nvbo->tile_flags;
233 return 0;
234 }
235
236 int
nouveau_gem_ioctl_new(struct drm_device * dev,void * data,struct drm_file * file_priv)237 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
238 struct drm_file *file_priv)
239 {
240 struct nouveau_drm *drm = nouveau_drm(dev);
241 struct nouveau_cli *cli = nouveau_cli(file_priv);
242 struct nouveau_fb *pfb = nouveau_fb(drm->device);
243 struct drm_nouveau_gem_new *req = data;
244 struct nouveau_bo *nvbo = NULL;
245 int ret = 0;
246
247 if (!pfb->memtype_valid(pfb, req->info.tile_flags)) {
248 NV_ERROR(cli, "bad page flags: 0x%08x\n", req->info.tile_flags);
249 return -EINVAL;
250 }
251
252 ret = nouveau_gem_new(dev, req->info.size, req->align,
253 req->info.domain, req->info.tile_mode,
254 req->info.tile_flags, &nvbo);
255 if (ret)
256 return ret;
257
258 ret = drm_gem_handle_create(file_priv, &nvbo->gem, &req->info.handle);
259 if (ret == 0) {
260 ret = nouveau_gem_info(file_priv, &nvbo->gem, &req->info);
261 if (ret)
262 drm_gem_handle_delete(file_priv, req->info.handle);
263 }
264
265 /* drop reference from allocate - handle holds it now */
266 drm_gem_object_unreference_unlocked(&nvbo->gem);
267 return ret;
268 }
269
270 static int
nouveau_gem_set_domain(struct drm_gem_object * gem,uint32_t read_domains,uint32_t write_domains,uint32_t valid_domains)271 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
272 uint32_t write_domains, uint32_t valid_domains)
273 {
274 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
275 struct ttm_buffer_object *bo = &nvbo->bo;
276 uint32_t domains = valid_domains & nvbo->valid_domains &
277 (write_domains ? write_domains : read_domains);
278 uint32_t pref_flags = 0, valid_flags = 0;
279
280 if (!domains)
281 return -EINVAL;
282
283 if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
284 valid_flags |= TTM_PL_FLAG_VRAM;
285
286 if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
287 valid_flags |= TTM_PL_FLAG_TT;
288
289 if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
290 bo->mem.mem_type == TTM_PL_VRAM)
291 pref_flags |= TTM_PL_FLAG_VRAM;
292
293 else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
294 bo->mem.mem_type == TTM_PL_TT)
295 pref_flags |= TTM_PL_FLAG_TT;
296
297 else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
298 pref_flags |= TTM_PL_FLAG_VRAM;
299
300 else
301 pref_flags |= TTM_PL_FLAG_TT;
302
303 nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
304
305 return 0;
306 }
307
308 struct validate_op {
309 struct list_head vram_list;
310 struct list_head gart_list;
311 struct list_head both_list;
312 struct ww_acquire_ctx ticket;
313 };
314
315 static void
validate_fini_list(struct list_head * list,struct nouveau_fence * fence,struct ww_acquire_ctx * ticket)316 validate_fini_list(struct list_head *list, struct nouveau_fence *fence,
317 struct ww_acquire_ctx *ticket)
318 {
319 struct list_head *entry, *tmp;
320 struct nouveau_bo *nvbo;
321
322 list_for_each_safe(entry, tmp, list) {
323 nvbo = list_entry(entry, struct nouveau_bo, entry);
324
325 if (likely(fence))
326 nouveau_bo_fence(nvbo, fence);
327
328 if (unlikely(nvbo->validate_mapped)) {
329 ttm_bo_kunmap(&nvbo->kmap);
330 nvbo->validate_mapped = false;
331 }
332
333 list_del(&nvbo->entry);
334 nvbo->reserved_by = NULL;
335 ttm_bo_unreserve_ticket(&nvbo->bo, ticket);
336 drm_gem_object_unreference_unlocked(&nvbo->gem);
337 }
338 }
339
340 static void
validate_fini_no_ticket(struct validate_op * op,struct nouveau_fence * fence)341 validate_fini_no_ticket(struct validate_op *op, struct nouveau_fence *fence)
342 {
343 validate_fini_list(&op->vram_list, fence, &op->ticket);
344 validate_fini_list(&op->gart_list, fence, &op->ticket);
345 validate_fini_list(&op->both_list, fence, &op->ticket);
346 }
347
348 static void
validate_fini(struct validate_op * op,struct nouveau_fence * fence)349 validate_fini(struct validate_op *op, struct nouveau_fence *fence)
350 {
351 validate_fini_no_ticket(op, fence);
352 ww_acquire_fini(&op->ticket);
353 }
354
355 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)356 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
357 struct drm_nouveau_gem_pushbuf_bo *pbbo,
358 int nr_buffers, struct validate_op *op)
359 {
360 struct nouveau_cli *cli = nouveau_cli(file_priv);
361 struct drm_device *dev = chan->drm->dev;
362 int trycnt = 0;
363 int ret, i;
364 struct nouveau_bo *res_bo = NULL;
365
366 ww_acquire_init(&op->ticket, &reservation_ww_class);
367 retry:
368 if (++trycnt > 100000) {
369 NV_ERROR(cli, "%s failed and gave up.\n", __func__);
370 return -EINVAL;
371 }
372
373 for (i = 0; i < nr_buffers; i++) {
374 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
375 struct drm_gem_object *gem;
376 struct nouveau_bo *nvbo;
377
378 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
379 if (!gem) {
380 NV_ERROR(cli, "Unknown handle 0x%08x\n", b->handle);
381 ww_acquire_done(&op->ticket);
382 validate_fini(op, NULL);
383 return -ENOENT;
384 }
385 nvbo = nouveau_gem_object(gem);
386 if (nvbo == res_bo) {
387 res_bo = NULL;
388 drm_gem_object_unreference_unlocked(gem);
389 continue;
390 }
391
392 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
393 NV_ERROR(cli, "multiple instances of buffer %d on "
394 "validation list\n", b->handle);
395 drm_gem_object_unreference_unlocked(gem);
396 ww_acquire_done(&op->ticket);
397 validate_fini(op, NULL);
398 return -EINVAL;
399 }
400
401 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, &op->ticket);
402 if (ret) {
403 validate_fini_no_ticket(op, NULL);
404 if (unlikely(ret == -EDEADLK)) {
405 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
406 &op->ticket);
407 if (!ret)
408 res_bo = nvbo;
409 }
410 if (unlikely(ret)) {
411 ww_acquire_done(&op->ticket);
412 ww_acquire_fini(&op->ticket);
413 drm_gem_object_unreference_unlocked(gem);
414 if (ret != -ERESTARTSYS)
415 NV_ERROR(cli, "fail reserve\n");
416 return ret;
417 }
418 }
419
420 b->user_priv = (uint64_t)(unsigned long)nvbo;
421 nvbo->reserved_by = file_priv;
422 nvbo->pbbo_index = i;
423 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
424 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
425 list_add_tail(&nvbo->entry, &op->both_list);
426 else
427 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
428 list_add_tail(&nvbo->entry, &op->vram_list);
429 else
430 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
431 list_add_tail(&nvbo->entry, &op->gart_list);
432 else {
433 NV_ERROR(cli, "invalid valid domains: 0x%08x\n",
434 b->valid_domains);
435 list_add_tail(&nvbo->entry, &op->both_list);
436 ww_acquire_done(&op->ticket);
437 validate_fini(op, NULL);
438 return -EINVAL;
439 }
440 if (nvbo == res_bo)
441 goto retry;
442 }
443
444 ww_acquire_done(&op->ticket);
445 return 0;
446 }
447
448 static int
validate_sync(struct nouveau_channel * chan,struct nouveau_bo * nvbo)449 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
450 {
451 struct nouveau_fence *fence = NULL;
452 int ret = 0;
453
454 spin_lock(&nvbo->bo.bdev->fence_lock);
455 fence = nouveau_fence_ref(nvbo->bo.sync_obj);
456 spin_unlock(&nvbo->bo.bdev->fence_lock);
457
458 if (fence) {
459 ret = nouveau_fence_sync(fence, chan);
460 nouveau_fence_unref(&fence);
461 }
462
463 return ret;
464 }
465
466 #ifdef __NetBSD__ /* XXX yargleblargh */
467 # define __force
468 #endif
469
470 static int
validate_list(struct nouveau_channel * chan,struct nouveau_cli * cli,struct list_head * list,struct drm_nouveau_gem_pushbuf_bo * pbbo,uint64_t user_pbbo_ptr)471 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
472 struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
473 uint64_t user_pbbo_ptr)
474 {
475 struct nouveau_drm *drm = chan->drm;
476 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
477 (void __force __user *)(uintptr_t)user_pbbo_ptr;
478 struct nouveau_bo *nvbo;
479 int ret, relocs = 0;
480
481 list_for_each_entry(nvbo, list, entry) {
482 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
483
484 ret = nouveau_gem_set_domain(&nvbo->gem, b->read_domains,
485 b->write_domains,
486 b->valid_domains);
487 if (unlikely(ret)) {
488 NV_ERROR(cli, "fail set_domain\n");
489 return ret;
490 }
491
492 ret = nouveau_bo_validate(nvbo, true, false);
493 if (unlikely(ret)) {
494 if (ret != -ERESTARTSYS)
495 NV_ERROR(cli, "fail ttm_validate\n");
496 return ret;
497 }
498
499 ret = validate_sync(chan, nvbo);
500 if (unlikely(ret)) {
501 NV_ERROR(cli, "fail post-validate sync\n");
502 return ret;
503 }
504
505 if (nv_device(drm->device)->card_type < NV_50) {
506 if (nvbo->bo.offset == b->presumed.offset &&
507 ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
508 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
509 (nvbo->bo.mem.mem_type == TTM_PL_TT &&
510 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
511 continue;
512
513 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
514 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
515 else
516 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
517 b->presumed.offset = nvbo->bo.offset;
518 b->presumed.valid = 0;
519 relocs++;
520
521 if (copy_to_user(&upbbo[nvbo->pbbo_index].presumed,
522 &b->presumed, sizeof(b->presumed)))
523 return -EFAULT;
524 }
525 }
526
527 return relocs;
528 }
529
530 static int
nouveau_gem_pushbuf_validate(struct nouveau_channel * chan,struct drm_file * file_priv,struct drm_nouveau_gem_pushbuf_bo * pbbo,uint64_t user_buffers,int nr_buffers,struct validate_op * op,int * apply_relocs)531 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
532 struct drm_file *file_priv,
533 struct drm_nouveau_gem_pushbuf_bo *pbbo,
534 uint64_t user_buffers, int nr_buffers,
535 struct validate_op *op, int *apply_relocs)
536 {
537 struct nouveau_cli *cli = nouveau_cli(file_priv);
538 int ret, relocs = 0;
539
540 INIT_LIST_HEAD(&op->vram_list);
541 INIT_LIST_HEAD(&op->gart_list);
542 INIT_LIST_HEAD(&op->both_list);
543
544 if (nr_buffers == 0)
545 return 0;
546
547 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
548 if (unlikely(ret)) {
549 if (ret != -ERESTARTSYS)
550 NV_ERROR(cli, "validate_init\n");
551 return ret;
552 }
553
554 ret = validate_list(chan, cli, &op->vram_list, pbbo, user_buffers);
555 if (unlikely(ret < 0)) {
556 if (ret != -ERESTARTSYS)
557 NV_ERROR(cli, "validate vram_list\n");
558 validate_fini(op, NULL);
559 return ret;
560 }
561 relocs += ret;
562
563 ret = validate_list(chan, cli, &op->gart_list, pbbo, user_buffers);
564 if (unlikely(ret < 0)) {
565 if (ret != -ERESTARTSYS)
566 NV_ERROR(cli, "validate gart_list\n");
567 validate_fini(op, NULL);
568 return ret;
569 }
570 relocs += ret;
571
572 ret = validate_list(chan, cli, &op->both_list, pbbo, user_buffers);
573 if (unlikely(ret < 0)) {
574 if (ret != -ERESTARTSYS)
575 NV_ERROR(cli, "validate both_list\n");
576 validate_fini(op, NULL);
577 return ret;
578 }
579 relocs += ret;
580
581 *apply_relocs = relocs;
582 return 0;
583 }
584
585 static inline void
u_free(void * addr)586 u_free(void *addr)
587 {
588 if (!is_vmalloc_addr(addr))
589 kfree(addr);
590 else
591 vfree(addr);
592 }
593
594 static inline void *
u_memcpya(uint64_t user,unsigned nmemb,unsigned size)595 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
596 {
597 void *mem;
598 void __user *userptr = (void __force __user *)(uintptr_t)user;
599
600 size *= nmemb;
601
602 mem = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
603 if (!mem)
604 mem = vmalloc(size);
605 if (!mem)
606 return ERR_PTR(-ENOMEM);
607
608 if (copy_from_user(mem, userptr, size)) {
609 u_free(mem);
610 return ERR_PTR(-EFAULT);
611 }
612
613 return mem;
614 }
615
616 static int
nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli * cli,struct drm_nouveau_gem_pushbuf * req,struct drm_nouveau_gem_pushbuf_bo * bo)617 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
618 struct drm_nouveau_gem_pushbuf *req,
619 struct drm_nouveau_gem_pushbuf_bo *bo)
620 {
621 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
622 int ret = 0;
623 unsigned i;
624
625 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
626 if (IS_ERR(reloc))
627 return PTR_ERR(reloc);
628
629 for (i = 0; i < req->nr_relocs; i++) {
630 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
631 struct drm_nouveau_gem_pushbuf_bo *b;
632 struct nouveau_bo *nvbo;
633 uint32_t data;
634
635 if (unlikely(r->bo_index > req->nr_buffers)) {
636 NV_ERROR(cli, "reloc bo index invalid\n");
637 ret = -EINVAL;
638 break;
639 }
640
641 b = &bo[r->bo_index];
642 if (b->presumed.valid)
643 continue;
644
645 if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
646 NV_ERROR(cli, "reloc container bo index invalid\n");
647 ret = -EINVAL;
648 break;
649 }
650 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
651
652 if (unlikely(r->reloc_bo_offset + 4 >
653 nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
654 NV_ERROR(cli, "reloc outside of bo\n");
655 ret = -EINVAL;
656 break;
657 }
658
659 if (!nvbo->kmap.virtual) {
660 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
661 &nvbo->kmap);
662 if (ret) {
663 NV_ERROR(cli, "failed kmap for reloc\n");
664 break;
665 }
666 nvbo->validate_mapped = true;
667 }
668
669 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
670 data = b->presumed.offset + r->data;
671 else
672 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
673 data = (b->presumed.offset + r->data) >> 32;
674 else
675 data = r->data;
676
677 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
678 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
679 data |= r->tor;
680 else
681 data |= r->vor;
682 }
683
684 spin_lock(&nvbo->bo.bdev->fence_lock);
685 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
686 spin_unlock(&nvbo->bo.bdev->fence_lock);
687 if (ret) {
688 NV_ERROR(cli, "reloc wait_idle failed: %d\n", ret);
689 break;
690 }
691
692 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
693 }
694
695 u_free(reloc);
696 return ret;
697 }
698
699 int
nouveau_gem_ioctl_pushbuf(struct drm_device * dev,void * data,struct drm_file * file_priv)700 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
701 struct drm_file *file_priv)
702 {
703 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
704 struct nouveau_cli *cli = nouveau_cli(file_priv);
705 struct nouveau_abi16_chan *temp;
706 struct nouveau_drm *drm = nouveau_drm(dev);
707 struct drm_nouveau_gem_pushbuf *req = data;
708 struct drm_nouveau_gem_pushbuf_push *push;
709 struct drm_nouveau_gem_pushbuf_bo *bo;
710 struct nouveau_channel *chan = NULL;
711 struct validate_op op;
712 struct nouveau_fence *fence = NULL;
713 int i, j, ret = 0, do_reloc = 0;
714
715 if (unlikely(!abi16))
716 return -ENOMEM;
717
718 list_for_each_entry(temp, &abi16->channels, head) {
719 if (temp->chan->handle == (NVDRM_CHAN | req->channel)) {
720 chan = temp->chan;
721 break;
722 }
723 }
724
725 if (!chan)
726 return nouveau_abi16_put(abi16, -ENOENT);
727
728 req->vram_available = drm->gem.vram_available;
729 req->gart_available = drm->gem.gart_available;
730 if (unlikely(req->nr_push == 0))
731 goto out_next;
732
733 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
734 NV_ERROR(cli, "pushbuf push count exceeds limit: %d max %d\n",
735 req->nr_push, NOUVEAU_GEM_MAX_PUSH);
736 return nouveau_abi16_put(abi16, -EINVAL);
737 }
738
739 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
740 NV_ERROR(cli, "pushbuf bo count exceeds limit: %d max %d\n",
741 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
742 return nouveau_abi16_put(abi16, -EINVAL);
743 }
744
745 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
746 NV_ERROR(cli, "pushbuf reloc count exceeds limit: %d max %d\n",
747 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
748 return nouveau_abi16_put(abi16, -EINVAL);
749 }
750
751 push = u_memcpya(req->push, req->nr_push, sizeof(*push));
752 if (IS_ERR(push))
753 return nouveau_abi16_put(abi16, PTR_ERR(push));
754
755 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
756 if (IS_ERR(bo)) {
757 u_free(push);
758 return nouveau_abi16_put(abi16, PTR_ERR(bo));
759 }
760
761 /* Ensure all push buffers are on validate list */
762 for (i = 0; i < req->nr_push; i++) {
763 if (push[i].bo_index >= req->nr_buffers) {
764 NV_ERROR(cli, "push %d buffer not in list\n", i);
765 ret = -EINVAL;
766 goto out_prevalid;
767 }
768 }
769
770 /* Validate buffer list */
771 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
772 req->nr_buffers, &op, &do_reloc);
773 if (ret) {
774 if (ret != -ERESTARTSYS)
775 NV_ERROR(cli, "validate: %d\n", ret);
776 goto out_prevalid;
777 }
778
779 /* Apply any relocations that are required */
780 if (do_reloc) {
781 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
782 if (ret) {
783 NV_ERROR(cli, "reloc apply: %d\n", ret);
784 goto out;
785 }
786 }
787
788 if (chan->dma.ib_max) {
789 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
790 if (ret) {
791 NV_ERROR(cli, "nv50cal_space: %d\n", ret);
792 goto out;
793 }
794
795 for (i = 0; i < req->nr_push; i++) {
796 struct nouveau_bo *nvbo = (void *)(unsigned long)
797 bo[push[i].bo_index].user_priv;
798
799 nv50_dma_push(chan, nvbo, push[i].offset,
800 push[i].length);
801 }
802 } else
803 if (nv_device(drm->device)->chipset >= 0x25) {
804 ret = RING_SPACE(chan, req->nr_push * 2);
805 if (ret) {
806 NV_ERROR(cli, "cal_space: %d\n", ret);
807 goto out;
808 }
809
810 for (i = 0; i < req->nr_push; i++) {
811 struct nouveau_bo *nvbo = (void *)(unsigned long)
812 bo[push[i].bo_index].user_priv;
813
814 OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
815 OUT_RING(chan, 0);
816 }
817 } else {
818 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
819 if (ret) {
820 NV_ERROR(cli, "jmp_space: %d\n", ret);
821 goto out;
822 }
823
824 for (i = 0; i < req->nr_push; i++) {
825 struct nouveau_bo *nvbo = (void *)(unsigned long)
826 bo[push[i].bo_index].user_priv;
827 uint32_t cmd;
828
829 cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
830 cmd |= 0x20000000;
831 if (unlikely(cmd != req->suffix0)) {
832 if (!nvbo->kmap.virtual) {
833 ret = ttm_bo_kmap(&nvbo->bo, 0,
834 nvbo->bo.mem.
835 num_pages,
836 &nvbo->kmap);
837 if (ret) {
838 WIND_RING(chan);
839 goto out;
840 }
841 nvbo->validate_mapped = true;
842 }
843
844 nouveau_bo_wr32(nvbo, (push[i].offset +
845 push[i].length - 8) / 4, cmd);
846 }
847
848 OUT_RING(chan, 0x20000000 |
849 (nvbo->bo.offset + push[i].offset));
850 OUT_RING(chan, 0);
851 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
852 OUT_RING(chan, 0);
853 }
854 }
855
856 ret = nouveau_fence_new(chan, false, &fence);
857 if (ret) {
858 NV_ERROR(cli, "error fencing pushbuf: %d\n", ret);
859 WIND_RING(chan);
860 goto out;
861 }
862
863 out:
864 validate_fini(&op, fence);
865 nouveau_fence_unref(&fence);
866
867 out_prevalid:
868 u_free(bo);
869 u_free(push);
870
871 out_next:
872 if (chan->dma.ib_max) {
873 req->suffix0 = 0x00000000;
874 req->suffix1 = 0x00000000;
875 } else
876 if (nv_device(drm->device)->chipset >= 0x25) {
877 req->suffix0 = 0x00020000;
878 req->suffix1 = 0x00000000;
879 } else {
880 req->suffix0 = 0x20000000 |
881 (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
882 req->suffix1 = 0x00000000;
883 }
884
885 return nouveau_abi16_put(abi16, ret);
886 }
887
888 int
nouveau_gem_ioctl_cpu_prep(struct drm_device * dev,void * data,struct drm_file * file_priv)889 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
890 struct drm_file *file_priv)
891 {
892 struct drm_nouveau_gem_cpu_prep *req = data;
893 struct drm_gem_object *gem;
894 struct nouveau_bo *nvbo;
895 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
896 int ret = -EINVAL;
897
898 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
899 if (!gem)
900 return -ENOENT;
901 nvbo = nouveau_gem_object(gem);
902
903 spin_lock(&nvbo->bo.bdev->fence_lock);
904 ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait);
905 spin_unlock(&nvbo->bo.bdev->fence_lock);
906 drm_gem_object_unreference_unlocked(gem);
907 return ret;
908 }
909
910 int
nouveau_gem_ioctl_cpu_fini(struct drm_device * dev,void * data,struct drm_file * file_priv)911 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
912 struct drm_file *file_priv)
913 {
914 return 0;
915 }
916
917 int
nouveau_gem_ioctl_info(struct drm_device * dev,void * data,struct drm_file * file_priv)918 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
919 struct drm_file *file_priv)
920 {
921 struct drm_nouveau_gem_info *req = data;
922 struct drm_gem_object *gem;
923 int ret;
924
925 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
926 if (!gem)
927 return -ENOENT;
928
929 ret = nouveau_gem_info(file_priv, gem, req);
930 drm_gem_object_unreference_unlocked(gem);
931 return ret;
932 }
933
934