1 /*
2 * Copyright 2011 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Dave Airlie
23 */
24
25 #include <drm/drmP.h>
26
27 #include "nouveau_drm.h"
28 #include "nouveau_gem.h"
29
nouveau_gem_prime_get_sg_table(struct drm_gem_object * obj)30 struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj)
31 {
32 struct nouveau_bo *nvbo = nouveau_gem_object(obj);
33 int npages = nvbo->bo.num_pages;
34
35 return drm_prime_pages_to_sg(nvbo->bo.ttm->pages, npages);
36 }
37
nouveau_gem_prime_vmap(struct drm_gem_object * obj)38 void *nouveau_gem_prime_vmap(struct drm_gem_object *obj)
39 {
40 struct nouveau_bo *nvbo = nouveau_gem_object(obj);
41 int ret;
42
43 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.num_pages,
44 &nvbo->dma_buf_vmap);
45 if (ret)
46 return ERR_PTR(ret);
47
48 return nvbo->dma_buf_vmap.virtual;
49 }
50
nouveau_gem_prime_vunmap(struct drm_gem_object * obj,void * vaddr)51 void nouveau_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
52 {
53 struct nouveau_bo *nvbo = nouveau_gem_object(obj);
54
55 ttm_bo_kunmap(&nvbo->dma_buf_vmap);
56 }
57
nouveau_gem_prime_import_sg_table(struct drm_device * dev,size_t size,struct sg_table * sg)58 struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev,
59 size_t size,
60 struct sg_table *sg)
61 {
62 struct nouveau_bo *nvbo;
63 u32 flags = 0;
64 int ret;
65
66 flags = TTM_PL_FLAG_TT;
67
68 ret = nouveau_bo_new(dev, size, 0, flags, 0, 0,
69 sg, &nvbo);
70 if (ret)
71 return ERR_PTR(ret);
72
73 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART;
74 nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
75 if (!nvbo->gem) {
76 nouveau_bo_ref(NULL, &nvbo);
77 return ERR_PTR(-ENOMEM);
78 }
79
80 nvbo->gem->driver_private = nvbo;
81 return nvbo->gem;
82 }
83
nouveau_gem_prime_pin(struct drm_gem_object * obj)84 int nouveau_gem_prime_pin(struct drm_gem_object *obj)
85 {
86 struct nouveau_bo *nvbo = nouveau_gem_object(obj);
87 int ret = 0;
88
89 /* pin buffer into GTT */
90 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_TT);
91 if (ret)
92 return -EINVAL;
93
94 return 0;
95 }
96