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drm/nouveau: Add DRM driver for NVIDIA GPUs
[mirror_ubuntu-artful-kernel.git] / drivers / gpu / drm / nouveau / nouveau_gem.c
CommitLineData
6ee73861
BS		 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#include "drmP.h"
27#include "drm.h"
28
29#include "nouveau_drv.h"
30#include "nouveau_drm.h"
31#include "nouveau_dma.h"
32
33#define nouveau_gem_pushbuf_sync(chan) 0
34
35int
36nouveau_gem_object_new(struct drm_gem_object *gem)
37{
38 return 0;
39}
40
41void
42nouveau_gem_object_del(struct drm_gem_object *gem)
43{
44 struct nouveau_bo *nvbo = gem->driver_private;
45 struct ttm_buffer_object *bo = &nvbo->bo;
46
47 if (!nvbo)
48 return;
49 nvbo->gem = NULL;
50
51 if (unlikely(nvbo->cpu_filp))
52 ttm_bo_synccpu_write_release(bo);
53
54 if (unlikely(nvbo->pin_refcnt)) {
55 nvbo->pin_refcnt = 1;
56 nouveau_bo_unpin(nvbo);
57 }
58
59 ttm_bo_unref(&bo);
60}
61
62int
63nouveau_gem_new(struct drm_device *dev, struct nouveau_channel *chan,
64 int size, int align, uint32_t flags, uint32_t tile_mode,
65 uint32_t tile_flags, bool no_vm, bool mappable,
66 struct nouveau_bo **pnvbo)
67{
68 struct nouveau_bo *nvbo;
69 int ret;
70
71 ret = nouveau_bo_new(dev, chan, size, align, flags, tile_mode,
72 tile_flags, no_vm, mappable, pnvbo);
73 if (ret)
74 return ret;
75 nvbo = *pnvbo;
76
77 nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
78 if (!nvbo->gem) {
79 nouveau_bo_ref(NULL, pnvbo);
80 return -ENOMEM;
81 }
82
83 nvbo->bo.persistant_swap_storage = nvbo->gem->filp;
84 nvbo->gem->driver_private = nvbo;
85 return 0;
86}
87
88static int
89nouveau_gem_info(struct drm_gem_object *gem, struct drm_nouveau_gem_info *rep)
90{
91 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
92
93 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
94 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
95 else
96 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
97
98 rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
99 rep->offset = nvbo->bo.offset;
100 rep->map_handle = nvbo->mappable ? nvbo->bo.addr_space_offset : 0;
101 rep->tile_mode = nvbo->tile_mode;
102 rep->tile_flags = nvbo->tile_flags;
103 return 0;
104}
105
106static bool
107nouveau_gem_tile_flags_valid(struct drm_device *dev, uint32_t tile_flags) {
108 switch (tile_flags) {
109 case 0x0000:
110 case 0x1800:
111 case 0x2800:
112 case 0x4800:
113 case 0x7000:
114 case 0x7400:
115 case 0x7a00:
116 case 0xe000:
117 break;
118 default:
119 NV_ERROR(dev, "bad page flags: 0x%08x\n", tile_flags);
120 return false;
121 }
122
123 return true;
124}
125
126int
127nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
128 struct drm_file *file_priv)
129{
130 struct drm_nouveau_private *dev_priv = dev->dev_private;
131 struct drm_nouveau_gem_new *req = data;
132 struct nouveau_bo *nvbo = NULL;
133 struct nouveau_channel *chan = NULL;
134 uint32_t flags = 0;
135 int ret = 0;
136
137 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
138
139 if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL))
140 dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping;
141
142 if (req->channel_hint) {
143 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel_hint,
144 file_priv, chan);
145 }
146
147 if (req->info.domain & NOUVEAU_GEM_DOMAIN_VRAM)
148 flags |= TTM_PL_FLAG_VRAM;
149 if (req->info.domain & NOUVEAU_GEM_DOMAIN_GART)
150 flags |= TTM_PL_FLAG_TT;
151 if (!flags || req->info.domain & NOUVEAU_GEM_DOMAIN_CPU)
152 flags |= TTM_PL_FLAG_SYSTEM;
153
154 if (!nouveau_gem_tile_flags_valid(dev, req->info.tile_flags))
155 return -EINVAL;
156
157 ret = nouveau_gem_new(dev, chan, req->info.size, req->align, flags,
158 req->info.tile_mode, req->info.tile_flags, false,
159 (req->info.domain & NOUVEAU_GEM_DOMAIN_MAPPABLE),
160 &nvbo);
161 if (ret)
162 return ret;
163
164 ret = nouveau_gem_info(nvbo->gem, &req->info);
165 if (ret)
166 goto out;
167
168 ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
169out:
170 mutex_lock(&dev->struct_mutex);
171 drm_gem_object_handle_unreference(nvbo->gem);
172 mutex_unlock(&dev->struct_mutex);
173
174 if (ret)
175 drm_gem_object_unreference(nvbo->gem);
176 return ret;
177}
178
179static int
180nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
181 uint32_t write_domains, uint32_t valid_domains)
182{
183 struct nouveau_bo *nvbo = gem->driver_private;
184 struct ttm_buffer_object *bo = &nvbo->bo;
185 uint64_t flags;
186
187 if (!valid_domains || (!read_domains && !write_domains))
188 return -EINVAL;
189
190 if (write_domains) {
191 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
192 (write_domains & NOUVEAU_GEM_DOMAIN_VRAM))
193 flags = TTM_PL_FLAG_VRAM;
194 else
195 if ((valid_domains & NOUVEAU_GEM_DOMAIN_GART) &&
196 (write_domains & NOUVEAU_GEM_DOMAIN_GART))
197 flags = TTM_PL_FLAG_TT;
198 else
199 return -EINVAL;
200 } else {
201 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
202 (read_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
203 bo->mem.mem_type == TTM_PL_VRAM)
204 flags = TTM_PL_FLAG_VRAM;
205 else
206 if ((valid_domains & NOUVEAU_GEM_DOMAIN_GART) &&
207 (read_domains & NOUVEAU_GEM_DOMAIN_GART) &&
208 bo->mem.mem_type == TTM_PL_TT)
209 flags = TTM_PL_FLAG_TT;
210 else
211 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
212 (read_domains & NOUVEAU_GEM_DOMAIN_VRAM))
213 flags = TTM_PL_FLAG_VRAM;
214 else
215 flags = TTM_PL_FLAG_TT;
216 }
217
218 nouveau_bo_placement_set(nvbo, flags);
219 return 0;
220}
221
222struct validate_op {
223 struct nouveau_fence *fence;
224 struct list_head vram_list;
225 struct list_head gart_list;
226 struct list_head both_list;
227};
228
229static void
230validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
231{
232 struct list_head *entry, *tmp;
233 struct nouveau_bo *nvbo;
234
235 list_for_each_safe(entry, tmp, list) {
236 nvbo = list_entry(entry, struct nouveau_bo, entry);
237 if (likely(fence)) {
238 struct nouveau_fence *prev_fence;
239
240 spin_lock(&nvbo->bo.lock);
241 prev_fence = nvbo->bo.sync_obj;
242 nvbo->bo.sync_obj = nouveau_fence_ref(fence);
243 spin_unlock(&nvbo->bo.lock);
244 nouveau_fence_unref((void *)&prev_fence);
245 }
246
247 list_del(&nvbo->entry);
248 nvbo->reserved_by = NULL;
249 ttm_bo_unreserve(&nvbo->bo);
250 drm_gem_object_unreference(nvbo->gem);
251 }
252}
253
254static void
255validate_fini(struct validate_op *op, bool success)
256{
257 struct nouveau_fence *fence = op->fence;
258
259 if (unlikely(!success))
260 op->fence = NULL;
261
262 validate_fini_list(&op->vram_list, op->fence);
263 validate_fini_list(&op->gart_list, op->fence);
264 validate_fini_list(&op->both_list, op->fence);
265 nouveau_fence_unref((void *)&fence);
266}
267
268static int
269validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
270 struct drm_nouveau_gem_pushbuf_bo *pbbo,
271 int nr_buffers, struct validate_op *op)
272{
273 struct drm_device *dev = chan->dev;
274 struct drm_nouveau_private *dev_priv = dev->dev_private;
275 uint32_t sequence;
276 int trycnt = 0;
277 int ret, i;
278
279 sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
280retry:
281 if (++trycnt > 100000) {
282 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
283 return -EINVAL;
284 }
285
286 for (i = 0; i < nr_buffers; i++) {
287 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
288 struct drm_gem_object *gem;
289 struct nouveau_bo *nvbo;
290
291 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
292 if (!gem) {
293 NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
294 validate_fini(op, NULL);
295 return -EINVAL;
296 }
297 nvbo = gem->driver_private;
298
299 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
300 NV_ERROR(dev, "multiple instances of buffer %d on "
301 "validation list\n", b->handle);
302 validate_fini(op, NULL);
303 return -EINVAL;
304 }
305
306 ret = ttm_bo_reserve(&nvbo->bo, false, false, true, sequence);
307 if (ret) {
308 validate_fini(op, NULL);
309 if (ret == -EAGAIN)
310 ret = ttm_bo_wait_unreserved(&nvbo->bo, false);
311 drm_gem_object_unreference(gem);
312 if (ret)
313 return ret;
314 goto retry;
315 }
316
317 nvbo->reserved_by = file_priv;
318 nvbo->pbbo_index = i;
319 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
320 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
321 list_add_tail(&nvbo->entry, &op->both_list);
322 else
323 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
324 list_add_tail(&nvbo->entry, &op->vram_list);
325 else
326 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
327 list_add_tail(&nvbo->entry, &op->gart_list);
328 else {
329 NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
330 b->valid_domains);
331 validate_fini(op, NULL);
332 return -EINVAL;
333 }
334
335 if (unlikely(atomic_read(&nvbo->bo.cpu_writers) > 0)) {
336 validate_fini(op, NULL);
337
338 if (nvbo->cpu_filp == file_priv) {
339 NV_ERROR(dev, "bo %p mapped by process trying "
340 "to validate it!\n", nvbo);
341 return -EINVAL;
342 }
343
344 ret = ttm_bo_wait_cpu(&nvbo->bo, false);
345 if (ret == -ERESTART)
346 ret = -EAGAIN;
347 if (ret)
348 return ret;
349 goto retry;
350 }
351 }
352
353 return 0;
354}
355
356static int
357validate_list(struct nouveau_channel *chan, struct list_head *list,
358 struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
359{
360 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
361 (void __force __user *)(uintptr_t)user_pbbo_ptr;
362 struct nouveau_bo *nvbo;
363 int ret, relocs = 0;
364
365 list_for_each_entry(nvbo, list, entry) {
366 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
367 struct nouveau_fence *prev_fence = nvbo->bo.sync_obj;
368
369 if (prev_fence && nouveau_fence_channel(prev_fence) != chan) {
370 spin_lock(&nvbo->bo.lock);
371 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
372 spin_unlock(&nvbo->bo.lock);
373 if (unlikely(ret))
374 return ret;
375 }
376
377 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
378 b->write_domains,
379 b->valid_domains);
380 if (unlikely(ret))
381 return ret;
382
383 nvbo->channel = chan;
384 ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement,
385 false, false);
386 nvbo->channel = NULL;
387 if (unlikely(ret))
388 return ret;
389
390 if (nvbo->bo.offset == b->presumed_offset &&
391 ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
392 b->presumed_domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
393 (nvbo->bo.mem.mem_type == TTM_PL_TT &&
394 b->presumed_domain & NOUVEAU_GEM_DOMAIN_GART)))
395 continue;
396
397 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
398 b->presumed_domain = NOUVEAU_GEM_DOMAIN_GART;
399 else
400 b->presumed_domain = NOUVEAU_GEM_DOMAIN_VRAM;
401 b->presumed_offset = nvbo->bo.offset;
402 b->presumed_ok = 0;
403 relocs++;
404
405 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index], b, sizeof(*b)))
406 return -EFAULT;
407 }
408
409 return relocs;
410}
411
412static int
413nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
414 struct drm_file *file_priv,
415 struct drm_nouveau_gem_pushbuf_bo *pbbo,
416 uint64_t user_buffers, int nr_buffers,
417 struct validate_op *op, int *apply_relocs)
418{
419 int ret, relocs = 0;
420
421 INIT_LIST_HEAD(&op->vram_list);
422 INIT_LIST_HEAD(&op->gart_list);
423 INIT_LIST_HEAD(&op->both_list);
424
425 ret = nouveau_fence_new(chan, &op->fence, false);
426 if (ret)
427 return ret;
428
429 if (nr_buffers == 0)
430 return 0;
431
432 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
433 if (unlikely(ret))
434 return ret;
435
436 ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
437 if (unlikely(ret < 0)) {
438 validate_fini(op, NULL);
439 return ret;
440 }
441 relocs += ret;
442
443 ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
444 if (unlikely(ret < 0)) {
445 validate_fini(op, NULL);
446 return ret;
447 }
448 relocs += ret;
449
450 ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
451 if (unlikely(ret < 0)) {
452 validate_fini(op, NULL);
453 return ret;
454 }
455 relocs += ret;
456
457 *apply_relocs = relocs;
458 return 0;
459}
460
461static inline void *
462u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
463{
464 void *mem;
465 void __user *userptr = (void __force __user *)(uintptr_t)user;
466
467 mem = kmalloc(nmemb * size, GFP_KERNEL);
468 if (!mem)
469 return ERR_PTR(-ENOMEM);
470
471 if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
472 kfree(mem);
473 return ERR_PTR(-EFAULT);
474 }
475
476 return mem;
477}
478
479static int
480nouveau_gem_pushbuf_reloc_apply(struct nouveau_channel *chan, int nr_bo,
481 struct drm_nouveau_gem_pushbuf_bo *bo,
482 int nr_relocs, uint64_t ptr_relocs,
483 int nr_dwords, int first_dword,
484 uint32_t *pushbuf, bool is_iomem)
485{
486 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
487 struct drm_device *dev = chan->dev;
488 int ret = 0, i;
489
490 reloc = u_memcpya(ptr_relocs, nr_relocs, sizeof(*reloc));
491 if (IS_ERR(reloc))
492 return PTR_ERR(reloc);
493
494 for (i = 0; i < nr_relocs; i++) {
495 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
496 struct drm_nouveau_gem_pushbuf_bo *b;
497 uint32_t data;
498
499 if (r->bo_index >= nr_bo || r->reloc_index < first_dword ||
500 r->reloc_index >= first_dword + nr_dwords) {
501 NV_ERROR(dev, "Bad relocation %d\n", i);
502 NV_ERROR(dev, " bo: %d max %d\n", r->bo_index, nr_bo);
503 NV_ERROR(dev, " id: %d max %d\n", r->reloc_index, nr_dwords);
504 ret = -EINVAL;
505 break;
506 }
507
508 b = &bo[r->bo_index];
509 if (b->presumed_ok)
510 continue;
511
512 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
513 data = b->presumed_offset + r->data;
514 else
515 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
516 data = (b->presumed_offset + r->data) >> 32;
517 else
518 data = r->data;
519
520 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
521 if (b->presumed_domain == NOUVEAU_GEM_DOMAIN_GART)
522 data |= r->tor;
523 else
524 data |= r->vor;
525 }
526
527 if (is_iomem)
528 iowrite32_native(data, (void __force __iomem *)
529 &pushbuf[r->reloc_index]);
530 else
531 pushbuf[r->reloc_index] = data;
532 }
533
534 kfree(reloc);
535 return ret;
536}
537
538int
539nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
540 struct drm_file *file_priv)
541{
542 struct drm_nouveau_gem_pushbuf *req = data;
543 struct drm_nouveau_gem_pushbuf_bo *bo = NULL;
544 struct nouveau_channel *chan;
545 struct validate_op op;
546 uint32_t *pushbuf = NULL;
547 int ret = 0, do_reloc = 0, i;
548
549 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
550 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
551
552 if (req->nr_dwords >= chan->dma.max ||
553 req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS ||
554 req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) {
555 NV_ERROR(dev, "Pushbuf config exceeds limits:\n");
556 NV_ERROR(dev, " dwords : %d max %d\n", req->nr_dwords,
557 chan->dma.max - 1);
558 NV_ERROR(dev, " buffers: %d max %d\n", req->nr_buffers,
559 NOUVEAU_GEM_MAX_BUFFERS);
560 NV_ERROR(dev, " relocs : %d max %d\n", req->nr_relocs,
561 NOUVEAU_GEM_MAX_RELOCS);
562 return -EINVAL;
563 }
564
565 pushbuf = u_memcpya(req->dwords, req->nr_dwords, sizeof(uint32_t));
566 if (IS_ERR(pushbuf))
567 return PTR_ERR(pushbuf);
568
569 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
570 if (IS_ERR(bo)) {
571 kfree(pushbuf);
572 return PTR_ERR(bo);
573 }
574
575 mutex_lock(&dev->struct_mutex);
576
577 /* Validate buffer list */
578 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
579 req->nr_buffers, &op, &do_reloc);
580 if (ret)
581 goto out;
582
583 /* Apply any relocations that are required */
584 if (do_reloc) {
585 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers,
586 bo, req->nr_relocs,
587 req->relocs,
588 req->nr_dwords, 0,
589 pushbuf, false);
590 if (ret)
591 goto out;
592 }
593
594 /* Emit push buffer to the hw
595 */
596 ret = RING_SPACE(chan, req->nr_dwords);
597 if (ret)
598 goto out;
599
600 OUT_RINGp(chan, pushbuf, req->nr_dwords);
601
602 ret = nouveau_fence_emit(op.fence);
603 if (ret) {
604 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
605 WIND_RING(chan);
606 goto out;
607 }
608
609 if (nouveau_gem_pushbuf_sync(chan)) {
610 ret = nouveau_fence_wait(op.fence, NULL, false, false);
611 if (ret) {
612 for (i = 0; i < req->nr_dwords; i++)
613 NV_ERROR(dev, "0x%08x\n", pushbuf[i]);
614 NV_ERROR(dev, "^^ above push buffer is fail :(\n");
615 }
616 }
617
618out:
619 validate_fini(&op, ret == 0);
620 mutex_unlock(&dev->struct_mutex);
621 kfree(pushbuf);
622 kfree(bo);
623 return ret;
624}
625
626#define PUSHBUF_CAL (dev_priv->card_type >= NV_20)
627
628int
629nouveau_gem_ioctl_pushbuf_call(struct drm_device *dev, void *data,
630 struct drm_file *file_priv)
631{
632 struct drm_nouveau_private *dev_priv = dev->dev_private;
633 struct drm_nouveau_gem_pushbuf_call *req = data;
634 struct drm_nouveau_gem_pushbuf_bo *bo = NULL;
635 struct nouveau_channel *chan;
636 struct drm_gem_object *gem;
637 struct nouveau_bo *pbbo;
638 struct validate_op op;
639 int i, ret = 0, do_reloc = 0;
640
641 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
642 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
643
644 if (unlikely(req->handle == 0))
645 goto out_next;
646
647 if (req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS ||
648 req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) {
649 NV_ERROR(dev, "Pushbuf config exceeds limits:\n");
650 NV_ERROR(dev, " buffers: %d max %d\n", req->nr_buffers,
651 NOUVEAU_GEM_MAX_BUFFERS);
652 NV_ERROR(dev, " relocs : %d max %d\n", req->nr_relocs,
653 NOUVEAU_GEM_MAX_RELOCS);
654 return -EINVAL;
655 }
656
657 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
658 if (IS_ERR(bo))
659 return PTR_ERR(bo);
660
661 mutex_lock(&dev->struct_mutex);
662
663 /* Validate buffer list */
664 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
665 req->nr_buffers, &op, &do_reloc);
666 if (ret) {
667 NV_ERROR(dev, "validate: %d\n", ret);
668 goto out;
669 }
670
671 /* Validate DMA push buffer */
672 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
673 if (!gem) {
674 NV_ERROR(dev, "Unknown pb handle 0x%08x\n", req->handle);
675 ret = -EINVAL;
676 goto out;
677 }
678 pbbo = nouveau_gem_object(gem);
679
680 ret = ttm_bo_reserve(&pbbo->bo, false, false, true,
681 chan->fence.sequence);
682 if (ret) {
683 NV_ERROR(dev, "resv pb: %d\n", ret);
684 drm_gem_object_unreference(gem);
685 goto out;
686 }
687
688 nouveau_bo_placement_set(pbbo, 1 << chan->pushbuf_bo->bo.mem.mem_type);
689 ret = ttm_bo_validate(&pbbo->bo, &pbbo->placement, false, false);
690 if (ret) {
691 NV_ERROR(dev, "validate pb: %d\n", ret);
692 ttm_bo_unreserve(&pbbo->bo);
693 drm_gem_object_unreference(gem);
694 goto out;
695 }
696
697 list_add_tail(&pbbo->entry, &op.both_list);
698
699 /* If presumed return address doesn't match, we need to map the
700 * push buffer and fix it..
701 */
702 if (!PUSHBUF_CAL) {
703 uint32_t retaddy;
704
705 if (chan->dma.free < 4 + NOUVEAU_DMA_SKIPS) {
706 ret = nouveau_dma_wait(chan, 4 + NOUVEAU_DMA_SKIPS);
707 if (ret) {
708 NV_ERROR(dev, "jmp_space: %d\n", ret);
709 goto out;
710 }
711 }
712
713 retaddy = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
714 retaddy |= 0x20000000;
715 if (retaddy != req->suffix0) {
716 req->suffix0 = retaddy;
717 do_reloc = 1;
718 }
719 }
720
721 /* Apply any relocations that are required */
722 if (do_reloc) {
723 void *pbvirt;
724 bool is_iomem;
725 ret = ttm_bo_kmap(&pbbo->bo, 0, pbbo->bo.mem.num_pages,
726 &pbbo->kmap);
727 if (ret) {
728 NV_ERROR(dev, "kmap pb: %d\n", ret);
729 goto out;
730 }
731
732 pbvirt = ttm_kmap_obj_virtual(&pbbo->kmap, &is_iomem);
733 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers, bo,
734 req->nr_relocs,
735 req->relocs,
736 req->nr_dwords,
737 req->offset / 4,
738 pbvirt, is_iomem);
739
740 if (!PUSHBUF_CAL) {
741 nouveau_bo_wr32(pbbo,
742 req->offset / 4 + req->nr_dwords - 2,
743 req->suffix0);
744 }
745
746 ttm_bo_kunmap(&pbbo->kmap);
747 if (ret) {
748 NV_ERROR(dev, "reloc apply: %d\n", ret);
749 goto out;
750 }
751 }
752
753 if (PUSHBUF_CAL) {
754 ret = RING_SPACE(chan, 2);
755 if (ret) {
756 NV_ERROR(dev, "cal_space: %d\n", ret);
757 goto out;
758 }
759 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) +
760 req->offset) | 2);
761 OUT_RING(chan, 0);
762 } else {
763 ret = RING_SPACE(chan, 2 + NOUVEAU_DMA_SKIPS);
764 if (ret) {
765 NV_ERROR(dev, "jmp_space: %d\n", ret);
766 goto out;
767 }
768 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) +
769 req->offset) | 0x20000000);
770 OUT_RING(chan, 0);
771
772 /* Space the jumps apart with NOPs. */
773 for (i = 0; i < NOUVEAU_DMA_SKIPS; i++)
774 OUT_RING(chan, 0);
775 }
776
777 ret = nouveau_fence_emit(op.fence);
778 if (ret) {
779 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
780 WIND_RING(chan);
781 goto out;
782 }
783
784out:
785 validate_fini(&op, ret == 0);
786 mutex_unlock(&dev->struct_mutex);
787 kfree(bo);
788
789out_next:
790 if (PUSHBUF_CAL) {
791 req->suffix0 = 0x00020000;
792 req->suffix1 = 0x00000000;
793 } else {
794 req->suffix0 = 0x20000000 |
795 (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
796 req->suffix1 = 0x00000000;
797 }
798
799 return ret;
800}
801
802int
803nouveau_gem_ioctl_pushbuf_call2(struct drm_device *dev, void *data,
804 struct drm_file *file_priv)
805{
806 struct drm_nouveau_private *dev_priv = dev->dev_private;
807 struct drm_nouveau_gem_pushbuf_call *req = data;
808
809 req->vram_available = dev_priv->fb_aper_free;
810 req->gart_available = dev_priv->gart_info.aper_free;
811
812 return nouveau_gem_ioctl_pushbuf_call(dev, data, file_priv);
813}
814
815static inline uint32_t
816domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
817{
818 uint32_t flags = 0;
819
820 if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
821 flags |= TTM_PL_FLAG_VRAM;
822 if (domain & NOUVEAU_GEM_DOMAIN_GART)
823 flags |= TTM_PL_FLAG_TT;
824
825 return flags;
826}
827
828int
829nouveau_gem_ioctl_pin(struct drm_device *dev, void *data,
830 struct drm_file *file_priv)
831{
832 struct drm_nouveau_gem_pin *req = data;
833 struct drm_gem_object *gem;
834 struct nouveau_bo *nvbo;
835 int ret = 0;
836
837 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
838
839 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
840 NV_ERROR(dev, "pin only allowed without kernel modesetting\n");
841 return -EINVAL;
842 }
843
844 if (!DRM_SUSER(DRM_CURPROC))
845 return -EPERM;
846
847 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
848 if (!gem)
849 return -EINVAL;
850 nvbo = nouveau_gem_object(gem);
851
852 ret = nouveau_bo_pin(nvbo, domain_to_ttm(nvbo, req->domain));
853 if (ret)
854 goto out;
855
856 req->offset = nvbo->bo.offset;
857 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
858 req->domain = NOUVEAU_GEM_DOMAIN_GART;
859 else
860 req->domain = NOUVEAU_GEM_DOMAIN_VRAM;
861
862out:
863 mutex_lock(&dev->struct_mutex);
864 drm_gem_object_unreference(gem);
865 mutex_unlock(&dev->struct_mutex);
866
867 return ret;
868}
869
870int
871nouveau_gem_ioctl_unpin(struct drm_device *dev, void *data,
872 struct drm_file *file_priv)
873{
874 struct drm_nouveau_gem_pin *req = data;
875 struct drm_gem_object *gem;
876 int ret;
877
878 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
879
880 if (drm_core_check_feature(dev, DRIVER_MODESET))
881 return -EINVAL;
882
883 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
884 if (!gem)
885 return -EINVAL;
886
887 ret = nouveau_bo_unpin(nouveau_gem_object(gem));
888
889 mutex_lock(&dev->struct_mutex);
890 drm_gem_object_unreference(gem);
891 mutex_unlock(&dev->struct_mutex);
892
893 return ret;
894}
895
896int
897nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
898 struct drm_file *file_priv)
899{
900 struct drm_nouveau_gem_cpu_prep *req = data;
901 struct drm_gem_object *gem;
902 struct nouveau_bo *nvbo;
903 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
904 int ret = -EINVAL;
905
906 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
907
908 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
909 if (!gem)
910 return ret;
911 nvbo = nouveau_gem_object(gem);
912
913 if (nvbo->cpu_filp) {
914 if (nvbo->cpu_filp == file_priv)
915 goto out;
916
917 ret = ttm_bo_wait_cpu(&nvbo->bo, no_wait);
918 if (ret == -ERESTART)
919 ret = -EAGAIN;
920 if (ret)
921 goto out;
922 }
923
924 if (req->flags & NOUVEAU_GEM_CPU_PREP_NOBLOCK) {
925 ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait);
926 } else {
927 ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait);
928 if (ret == -ERESTART)
929 ret = -EAGAIN;
930 else
931 if (ret == 0)
932 nvbo->cpu_filp = file_priv;
933 }
934
935out:
936 mutex_lock(&dev->struct_mutex);
937 drm_gem_object_unreference(gem);
938 mutex_unlock(&dev->struct_mutex);
939 return ret;
940}
941
942int
943nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
944 struct drm_file *file_priv)
945{
946 struct drm_nouveau_gem_cpu_prep *req = data;
947 struct drm_gem_object *gem;
948 struct nouveau_bo *nvbo;
949 int ret = -EINVAL;
950
951 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
952
953 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
954 if (!gem)
955 return ret;
956 nvbo = nouveau_gem_object(gem);
957
958 if (nvbo->cpu_filp != file_priv)
959 goto out;
960 nvbo->cpu_filp = NULL;
961
962 ttm_bo_synccpu_write_release(&nvbo->bo);
963 ret = 0;
964
965out:
966 mutex_lock(&dev->struct_mutex);
967 drm_gem_object_unreference(gem);
968 mutex_unlock(&dev->struct_mutex);
969 return ret;
970}
971
972int
973nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
974 struct drm_file *file_priv)
975{
976 struct drm_nouveau_gem_info *req = data;
977 struct drm_gem_object *gem;
978 int ret;
979
980 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
981
982 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
983 if (!gem)
984 return -EINVAL;
985
986 ret = nouveau_gem_info(gem, req);
987 mutex_lock(&dev->struct_mutex);
988 drm_gem_object_unreference(gem);
989 mutex_unlock(&dev->struct_mutex);
990 return ret;
991}
992
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