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Linux 2.6.33-rc6
[cris-mirror.git] / drivers / gpu / drm / nouveau / nouveau_gem.c
blob6ac804b0c9f9d3f909de248563eae3093476a67f
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
35 int
36 nouveau_gem_object_new(struct drm_gem_object *gem)
37 {
38 return 0;
39 }
40
41 void
42 nouveau_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
62 int
63 nouveau_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
88 static int
89 nouveau_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
106 static bool
107 nouveau_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
126 int
127 nouveau_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);
169 out:
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
179 static int
180 nouveau_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
222 struct validate_op {
223 struct list_head vram_list;
224 struct list_head gart_list;
225 struct list_head both_list;
226 };
227
228 static void
229 validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
230 {
231 struct list_head *entry, *tmp;
232 struct nouveau_bo *nvbo;
233
234 list_for_each_safe(entry, tmp, list) {
235 nvbo = list_entry(entry, struct nouveau_bo, entry);
236 if (likely(fence)) {
237 struct nouveau_fence *prev_fence;
238
239 spin_lock(&nvbo->bo.lock);
240 prev_fence = nvbo->bo.sync_obj;
241 nvbo->bo.sync_obj = nouveau_fence_ref(fence);
242 spin_unlock(&nvbo->bo.lock);
243 nouveau_fence_unref((void *)&prev_fence);
244 }
245
246 list_del(&nvbo->entry);
247 nvbo->reserved_by = NULL;
248 ttm_bo_unreserve(&nvbo->bo);
249 drm_gem_object_unreference(nvbo->gem);
250 }
251 }
252
253 static void
254 validate_fini(struct validate_op *op, struct nouveau_fence* fence)
255 {
256 validate_fini_list(&op->vram_list, fence);
257 validate_fini_list(&op->gart_list, fence);
258 validate_fini_list(&op->both_list, fence);
259 }
260
261 static int
262 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
263 struct drm_nouveau_gem_pushbuf_bo *pbbo,
264 int nr_buffers, struct validate_op *op)
265 {
266 struct drm_device *dev = chan->dev;
267 struct drm_nouveau_private *dev_priv = dev->dev_private;
268 uint32_t sequence;
269 int trycnt = 0;
270 int ret, i;
271
272 sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
273 retry:
274 if (++trycnt > 100000) {
275 NV_ERROR(dev, "%s failed and gave up.\n", __func__);
276 return -EINVAL;
277 }
278
279 for (i = 0; i < nr_buffers; i++) {
280 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
281 struct drm_gem_object *gem;
282 struct nouveau_bo *nvbo;
283
284 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
285 if (!gem) {
286 NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
287 validate_fini(op, NULL);
288 return -EINVAL;
289 }
290 nvbo = gem->driver_private;
291
292 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
293 NV_ERROR(dev, "multiple instances of buffer %d on "
294 "validation list\n", b->handle);
295 validate_fini(op, NULL);
296 return -EINVAL;
297 }
298
299 ret = ttm_bo_reserve(&nvbo->bo, false, false, true, sequence);
300 if (ret) {
301 validate_fini(op, NULL);
302 if (ret == -EAGAIN)
303 ret = ttm_bo_wait_unreserved(&nvbo->bo, false);
304 drm_gem_object_unreference(gem);
305 if (ret)
306 return ret;
307 goto retry;
308 }
309
310 nvbo->reserved_by = file_priv;
311 nvbo->pbbo_index = i;
312 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
313 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
314 list_add_tail(&nvbo->entry, &op->both_list);
315 else
316 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
317 list_add_tail(&nvbo->entry, &op->vram_list);
318 else
319 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
320 list_add_tail(&nvbo->entry, &op->gart_list);
321 else {
322 NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
323 b->valid_domains);
324 list_add_tail(&nvbo->entry, &op->both_list);
325 validate_fini(op, NULL);
326 return -EINVAL;
327 }
328
329 if (unlikely(atomic_read(&nvbo->bo.cpu_writers) > 0)) {
330 validate_fini(op, NULL);
331
332 if (nvbo->cpu_filp == file_priv) {
333 NV_ERROR(dev, "bo %p mapped by process trying "
334 "to validate it!\n", nvbo);
335 return -EINVAL;
336 }
337
338 ret = ttm_bo_wait_cpu(&nvbo->bo, false);
339 if (ret)
340 return ret;
341 goto retry;
342 }
343 }
344
345 return 0;
346 }
347
348 static int
349 validate_list(struct nouveau_channel *chan, struct list_head *list,
350 struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
351 {
352 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
353 (void __force __user *)(uintptr_t)user_pbbo_ptr;
354 struct nouveau_bo *nvbo;
355 int ret, relocs = 0;
356
357 list_for_each_entry(nvbo, list, entry) {
358 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
359 struct nouveau_fence *prev_fence = nvbo->bo.sync_obj;
360
361 if (prev_fence && nouveau_fence_channel(prev_fence) != chan) {
362 spin_lock(&nvbo->bo.lock);
363 ret = ttm_bo_wait(&nvbo->bo, false, false, false);
364 spin_unlock(&nvbo->bo.lock);
365 if (unlikely(ret))
366 return ret;
367 }
368
369 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
370 b->write_domains,
371 b->valid_domains);
372 if (unlikely(ret))
373 return ret;
374
375 nvbo->channel = chan;
376 ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement,
377 false, false);
378 nvbo->channel = NULL;
379 if (unlikely(ret))
380 return ret;
381
382 if (nvbo->bo.offset == b->presumed_offset &&
383 ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
384 b->presumed_domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
385 (nvbo->bo.mem.mem_type == TTM_PL_TT &&
386 b->presumed_domain & NOUVEAU_GEM_DOMAIN_GART)))
387 continue;
388
389 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
390 b->presumed_domain = NOUVEAU_GEM_DOMAIN_GART;
391 else
392 b->presumed_domain = NOUVEAU_GEM_DOMAIN_VRAM;
393 b->presumed_offset = nvbo->bo.offset;
394 b->presumed_ok = 0;
395 relocs++;
396
397 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index], b, sizeof(*b)))
398 return -EFAULT;
399 }
400
401 return relocs;
402 }
403
404 static int
405 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
406 struct drm_file *file_priv,
407 struct drm_nouveau_gem_pushbuf_bo *pbbo,
408 uint64_t user_buffers, int nr_buffers,
409 struct validate_op *op, int *apply_relocs)
410 {
411 int ret, relocs = 0;
412
413 INIT_LIST_HEAD(&op->vram_list);
414 INIT_LIST_HEAD(&op->gart_list);
415 INIT_LIST_HEAD(&op->both_list);
416
417 if (nr_buffers == 0)
418 return 0;
419
420 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
421 if (unlikely(ret))
422 return ret;
423
424 ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
425 if (unlikely(ret < 0)) {
426 validate_fini(op, NULL);
427 return ret;
428 }
429 relocs += ret;
430
431 ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
432 if (unlikely(ret < 0)) {
433 validate_fini(op, NULL);
434 return ret;
435 }
436 relocs += ret;
437
438 ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
439 if (unlikely(ret < 0)) {
440 validate_fini(op, NULL);
441 return ret;
442 }
443 relocs += ret;
444
445 *apply_relocs = relocs;
446 return 0;
447 }
448
449 static inline void *
450 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
451 {
452 void *mem;
453 void __user *userptr = (void __force __user *)(uintptr_t)user;
454
455 mem = kmalloc(nmemb * size, GFP_KERNEL);
456 if (!mem)
457 return ERR_PTR(-ENOMEM);
458
459 if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
460 kfree(mem);
461 return ERR_PTR(-EFAULT);
462 }
463
464 return mem;
465 }
466
467 static int
468 nouveau_gem_pushbuf_reloc_apply(struct nouveau_channel *chan, int nr_bo,
469 struct drm_nouveau_gem_pushbuf_bo *bo,
470 unsigned nr_relocs, uint64_t ptr_relocs,
471 unsigned nr_dwords, unsigned first_dword,
472 uint32_t *pushbuf, bool is_iomem)
473 {
474 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
475 struct drm_device *dev = chan->dev;
476 int ret = 0;
477 unsigned i;
478
479 reloc = u_memcpya(ptr_relocs, nr_relocs, sizeof(*reloc));
480 if (IS_ERR(reloc))
481 return PTR_ERR(reloc);
482
483 for (i = 0; i < nr_relocs; i++) {
484 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
485 struct drm_nouveau_gem_pushbuf_bo *b;
486 uint32_t data;
487
488 if (r->bo_index >= nr_bo || r->reloc_index < first_dword ||
489 r->reloc_index >= first_dword + nr_dwords) {
490 NV_ERROR(dev, "Bad relocation %d\n", i);
491 NV_ERROR(dev, " bo: %d max %d\n", r->bo_index, nr_bo);
492 NV_ERROR(dev, " id: %d max %d\n", r->reloc_index, nr_dwords);
493 ret = -EINVAL;
494 break;
495 }
496
497 b = &bo[r->bo_index];
498 if (b->presumed_ok)
499 continue;
500
501 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
502 data = b->presumed_offset + r->data;
503 else
504 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
505 data = (b->presumed_offset + r->data) >> 32;
506 else
507 data = r->data;
508
509 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
510 if (b->presumed_domain == NOUVEAU_GEM_DOMAIN_GART)
511 data |= r->tor;
512 else
513 data |= r->vor;
514 }
515
516 if (is_iomem)
517 iowrite32_native(data, (void __force __iomem *)
518 &pushbuf[r->reloc_index]);
519 else
520 pushbuf[r->reloc_index] = data;
521 }
522
523 kfree(reloc);
524 return ret;
525 }
526
527 int
528 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
529 struct drm_file *file_priv)
530 {
531 struct drm_nouveau_gem_pushbuf *req = data;
532 struct drm_nouveau_gem_pushbuf_bo *bo = NULL;
533 struct nouveau_channel *chan;
534 struct validate_op op;
535 struct nouveau_fence* fence = 0;
536 uint32_t *pushbuf = NULL;
537 int ret = 0, do_reloc = 0, i;
538
539 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
540 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
541
542 if (req->nr_dwords >= chan->dma.max ||
543 req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS ||
544 req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) {
545 NV_ERROR(dev, "Pushbuf config exceeds limits:\n");
546 NV_ERROR(dev, " dwords : %d max %d\n", req->nr_dwords,
547 chan->dma.max - 1);
548 NV_ERROR(dev, " buffers: %d max %d\n", req->nr_buffers,
549 NOUVEAU_GEM_MAX_BUFFERS);
550 NV_ERROR(dev, " relocs : %d max %d\n", req->nr_relocs,
551 NOUVEAU_GEM_MAX_RELOCS);
552 return -EINVAL;
553 }
554
555 pushbuf = u_memcpya(req->dwords, req->nr_dwords, sizeof(uint32_t));
556 if (IS_ERR(pushbuf))
557 return PTR_ERR(pushbuf);
558
559 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
560 if (IS_ERR(bo)) {
561 kfree(pushbuf);
562 return PTR_ERR(bo);
563 }
564
565 mutex_lock(&dev->struct_mutex);
566
567 /* Validate buffer list */
568 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
569 req->nr_buffers, &op, &do_reloc);
570 if (ret)
571 goto out;
572
573 /* Apply any relocations that are required */
574 if (do_reloc) {
575 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers,
576 bo, req->nr_relocs,
577 req->relocs,
578 req->nr_dwords, 0,
579 pushbuf, false);
580 if (ret)
581 goto out;
582 }
583
584 /* Emit push buffer to the hw
585 */
586 ret = RING_SPACE(chan, req->nr_dwords);
587 if (ret)
588 goto out;
589
590 OUT_RINGp(chan, pushbuf, req->nr_dwords);
591
592 ret = nouveau_fence_new(chan, &fence, true);
593 if (ret) {
594 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
595 WIND_RING(chan);
596 goto out;
597 }
598
599 if (nouveau_gem_pushbuf_sync(chan)) {
600 ret = nouveau_fence_wait(fence, NULL, false, false);
601 if (ret) {
602 for (i = 0; i < req->nr_dwords; i++)
603 NV_ERROR(dev, "0x%08x\n", pushbuf[i]);
604 NV_ERROR(dev, "^^ above push buffer is fail :(\n");
605 }
606 }
607
608 out:
609 validate_fini(&op, fence);
610 nouveau_fence_unref((void**)&fence);
611 mutex_unlock(&dev->struct_mutex);
612 kfree(pushbuf);
613 kfree(bo);
614 return ret;
615 }
616
617 #define PUSHBUF_CAL (dev_priv->card_type >= NV_20)
618
619 int
620 nouveau_gem_ioctl_pushbuf_call(struct drm_device *dev, void *data,
621 struct drm_file *file_priv)
622 {
623 struct drm_nouveau_private *dev_priv = dev->dev_private;
624 struct drm_nouveau_gem_pushbuf_call *req = data;
625 struct drm_nouveau_gem_pushbuf_bo *bo = NULL;
626 struct nouveau_channel *chan;
627 struct drm_gem_object *gem;
628 struct nouveau_bo *pbbo;
629 struct validate_op op;
630 struct nouveau_fence* fence = 0;
631 int i, ret = 0, do_reloc = 0;
632
633 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
634 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
635
636 if (unlikely(req->handle == 0))
637 goto out_next;
638
639 if (req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS ||
640 req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) {
641 NV_ERROR(dev, "Pushbuf config exceeds limits:\n");
642 NV_ERROR(dev, " buffers: %d max %d\n", req->nr_buffers,
643 NOUVEAU_GEM_MAX_BUFFERS);
644 NV_ERROR(dev, " relocs : %d max %d\n", req->nr_relocs,
645 NOUVEAU_GEM_MAX_RELOCS);
646 return -EINVAL;
647 }
648
649 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
650 if (IS_ERR(bo))
651 return PTR_ERR(bo);
652
653 mutex_lock(&dev->struct_mutex);
654
655 /* Validate buffer list */
656 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
657 req->nr_buffers, &op, &do_reloc);
658 if (ret) {
659 NV_ERROR(dev, "validate: %d\n", ret);
660 goto out;
661 }
662
663 /* Validate DMA push buffer */
664 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
665 if (!gem) {
666 NV_ERROR(dev, "Unknown pb handle 0x%08x\n", req->handle);
667 ret = -EINVAL;
668 goto out;
669 }
670 pbbo = nouveau_gem_object(gem);
671
672 if ((req->offset & 3) || req->nr_dwords < 2 ||
673 (unsigned long)req->offset > (unsigned long)pbbo->bo.mem.size ||
674 (unsigned long)req->nr_dwords >
675 ((unsigned long)(pbbo->bo.mem.size - req->offset ) >> 2)) {
676 NV_ERROR(dev, "pb call misaligned or out of bounds: "
677 "%d + %d * 4 > %ld\n",
678 req->offset, req->nr_dwords, pbbo->bo.mem.size);
679 ret = -EINVAL;
680 drm_gem_object_unreference(gem);
681 goto out;
682 }
683
684 ret = ttm_bo_reserve(&pbbo->bo, false, false, true,
685 chan->fence.sequence);
686 if (ret) {
687 NV_ERROR(dev, "resv pb: %d\n", ret);
688 drm_gem_object_unreference(gem);
689 goto out;
690 }
691
692 nouveau_bo_placement_set(pbbo, 1 << chan->pushbuf_bo->bo.mem.mem_type);
693 ret = ttm_bo_validate(&pbbo->bo, &pbbo->placement, false, false);
694 if (ret) {
695 NV_ERROR(dev, "validate pb: %d\n", ret);
696 ttm_bo_unreserve(&pbbo->bo);
697 drm_gem_object_unreference(gem);
698 goto out;
699 }
700
701 list_add_tail(&pbbo->entry, &op.both_list);
702
703 /* If presumed return address doesn't match, we need to map the
704 * push buffer and fix it..
705 */
706 if (!PUSHBUF_CAL) {
707 uint32_t retaddy;
708
709 if (chan->dma.free < 4 + NOUVEAU_DMA_SKIPS) {
710 ret = nouveau_dma_wait(chan, 4 + NOUVEAU_DMA_SKIPS);
711 if (ret) {
712 NV_ERROR(dev, "jmp_space: %d\n", ret);
713 goto out;
714 }
715 }
716
717 retaddy = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
718 retaddy |= 0x20000000;
719 if (retaddy != req->suffix0) {
720 req->suffix0 = retaddy;
721 do_reloc = 1;
722 }
723 }
724
725 /* Apply any relocations that are required */
726 if (do_reloc) {
727 void *pbvirt;
728 bool is_iomem;
729 ret = ttm_bo_kmap(&pbbo->bo, 0, pbbo->bo.mem.num_pages,
730 &pbbo->kmap);
731 if (ret) {
732 NV_ERROR(dev, "kmap pb: %d\n", ret);
733 goto out;
734 }
735
736 pbvirt = ttm_kmap_obj_virtual(&pbbo->kmap, &is_iomem);
737 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers, bo,
738 req->nr_relocs,
739 req->relocs,
740 req->nr_dwords,
741 req->offset / 4,
742 pbvirt, is_iomem);
743
744 if (!PUSHBUF_CAL) {
745 nouveau_bo_wr32(pbbo,
746 req->offset / 4 + req->nr_dwords - 2,
747 req->suffix0);
748 }
749
750 ttm_bo_kunmap(&pbbo->kmap);
751 if (ret) {
752 NV_ERROR(dev, "reloc apply: %d\n", ret);
753 goto out;
754 }
755 }
756
757 if (PUSHBUF_CAL) {
758 ret = RING_SPACE(chan, 2);
759 if (ret) {
760 NV_ERROR(dev, "cal_space: %d\n", ret);
761 goto out;
762 }
763 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) +
764 req->offset) | 2);
765 OUT_RING(chan, 0);
766 } else {
767 ret = RING_SPACE(chan, 2 + NOUVEAU_DMA_SKIPS);
768 if (ret) {
769 NV_ERROR(dev, "jmp_space: %d\n", ret);
770 goto out;
771 }
772 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) +
773 req->offset) | 0x20000000);
774 OUT_RING(chan, 0);
775
776 /* Space the jumps apart with NOPs. */
777 for (i = 0; i < NOUVEAU_DMA_SKIPS; i++)
778 OUT_RING(chan, 0);
779 }
780
781 ret = nouveau_fence_new(chan, &fence, true);
782 if (ret) {
783 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
784 WIND_RING(chan);
785 goto out;
786 }
787
788 out:
789 validate_fini(&op, fence);
790 nouveau_fence_unref((void**)&fence);
791 mutex_unlock(&dev->struct_mutex);
792 kfree(bo);
793
794 out_next:
795 if (PUSHBUF_CAL) {
796 req->suffix0 = 0x00020000;
797 req->suffix1 = 0x00000000;
798 } else {
799 req->suffix0 = 0x20000000 |
800 (chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
801 req->suffix1 = 0x00000000;
802 }
803
804 return ret;
805 }
806
807 int
808 nouveau_gem_ioctl_pushbuf_call2(struct drm_device *dev, void *data,
809 struct drm_file *file_priv)
810 {
811 struct drm_nouveau_private *dev_priv = dev->dev_private;
812 struct drm_nouveau_gem_pushbuf_call *req = data;
813
814 req->vram_available = dev_priv->fb_aper_free;
815 req->gart_available = dev_priv->gart_info.aper_free;
816
817 return nouveau_gem_ioctl_pushbuf_call(dev, data, file_priv);
818 }
819
820 static inline uint32_t
821 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
822 {
823 uint32_t flags = 0;
824
825 if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
826 flags |= TTM_PL_FLAG_VRAM;
827 if (domain & NOUVEAU_GEM_DOMAIN_GART)
828 flags |= TTM_PL_FLAG_TT;
829
830 return flags;
831 }
832
833 int
834 nouveau_gem_ioctl_pin(struct drm_device *dev, void *data,
835 struct drm_file *file_priv)
836 {
837 struct drm_nouveau_gem_pin *req = data;
838 struct drm_gem_object *gem;
839 struct nouveau_bo *nvbo;
840 int ret = 0;
841
842 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
843
844 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
845 NV_ERROR(dev, "pin only allowed without kernel modesetting\n");
846 return -EINVAL;
847 }
848
849 if (!DRM_SUSER(DRM_CURPROC))
850 return -EPERM;
851
852 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
853 if (!gem)
854 return -EINVAL;
855 nvbo = nouveau_gem_object(gem);
856
857 ret = nouveau_bo_pin(nvbo, domain_to_ttm(nvbo, req->domain));
858 if (ret)
859 goto out;
860
861 req->offset = nvbo->bo.offset;
862 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
863 req->domain = NOUVEAU_GEM_DOMAIN_GART;
864 else
865 req->domain = NOUVEAU_GEM_DOMAIN_VRAM;
866
867 out:
868 mutex_lock(&dev->struct_mutex);
869 drm_gem_object_unreference(gem);
870 mutex_unlock(&dev->struct_mutex);
871
872 return ret;
873 }
874
875 int
876 nouveau_gem_ioctl_unpin(struct drm_device *dev, void *data,
877 struct drm_file *file_priv)
878 {
879 struct drm_nouveau_gem_pin *req = data;
880 struct drm_gem_object *gem;
881 int ret;
882
883 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
884
885 if (drm_core_check_feature(dev, DRIVER_MODESET))
886 return -EINVAL;
887
888 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
889 if (!gem)
890 return -EINVAL;
891
892 ret = nouveau_bo_unpin(nouveau_gem_object(gem));
893
894 mutex_lock(&dev->struct_mutex);
895 drm_gem_object_unreference(gem);
896 mutex_unlock(&dev->struct_mutex);
897
898 return ret;
899 }
900
901 int
902 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
903 struct drm_file *file_priv)
904 {
905 struct drm_nouveau_gem_cpu_prep *req = data;
906 struct drm_gem_object *gem;
907 struct nouveau_bo *nvbo;
908 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
909 int ret = -EINVAL;
910
911 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
912
913 gem = drm_gem_object_lookup(dev, file_priv, req->handle);
914 if (!gem)
915 return ret;
916 nvbo = nouveau_gem_object(gem);
917
918 if (nvbo->cpu_filp) {
919 if (nvbo->cpu_filp == file_priv)
920 goto out;
921
922 ret = ttm_bo_wait_cpu(&nvbo->bo, no_wait);
923 if (ret)
924 goto out;
925 }
926
927 if (req->flags & NOUVEAU_GEM_CPU_PREP_NOBLOCK) {
928 ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait);
929 } else {
930 ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait);
931 if (ret == 0)
932 nvbo->cpu_filp = file_priv;
933 }
934
935 out:
936 mutex_lock(&dev->struct_mutex);
937 drm_gem_object_unreference(gem);
938 mutex_unlock(&dev->struct_mutex);
939 return ret;
940 }
941
942 int
943 nouveau_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
965 out:
966 mutex_lock(&dev->struct_mutex);
967 drm_gem_object_unreference(gem);
968 mutex_unlock(&dev->struct_mutex);
969 return ret;
970 }
971
972 int
973 nouveau_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
CRIS linux kernel tree