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e9bf5f36 DA |
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 | */ | |
22b33e8e | 24 | |
b5e9c1a2 | 25 | #include <linux/dma-buf.h> |
a3185f91 | 26 | #include <drm/ttm/ttm_tt.h> |
22b33e8e | 27 | |
4dc28134 | 28 | #include "nouveau_drv.h" |
77145f1c | 29 | #include "nouveau_gem.h" |
22b33e8e | 30 | |
ab9ccb96 | 31 | struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj) |
22b33e8e | 32 | { |
ab9ccb96 | 33 | struct nouveau_bo *nvbo = nouveau_gem_object(obj); |
22b33e8e | 34 | |
e11bfb99 CK |
35 | return drm_prime_pages_to_sg(obj->dev, nvbo->bo.ttm->pages, |
36 | nvbo->bo.ttm->num_pages); | |
22b33e8e DA |
37 | } |
38 | ||
ab9ccb96 | 39 | struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev, |
b5e9c1a2 | 40 | struct dma_buf_attachment *attach, |
ab9ccb96 | 41 | struct sg_table *sg) |
22b33e8e | 42 | { |
bab7cc18 | 43 | struct nouveau_drm *drm = nouveau_drm(dev); |
0bb21c96 | 44 | struct drm_gem_object *obj; |
22b33e8e | 45 | struct nouveau_bo *nvbo; |
52791eee | 46 | struct dma_resv *robj = attach->dmabuf->resv; |
9ca7f796 | 47 | u64 size = attach->dmabuf->size; |
9ca7f796 | 48 | int align = 0; |
22b33e8e DA |
49 | int ret; |
50 | ||
52791eee | 51 | dma_resv_lock(robj, NULL); |
81b61579 | 52 | nvbo = nouveau_bo_alloc(&drm->client, &size, &align, |
b88baab8 | 53 | NOUVEAU_GEM_DOMAIN_GART, 0, 0, true); |
0bb21c96 TR |
54 | if (IS_ERR(nvbo)) { |
55 | obj = ERR_CAST(nvbo); | |
56 | goto unlock; | |
57 | } | |
22b33e8e | 58 | |
22b33e8e | 59 | nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART; |
55fb74ad | 60 | |
ed853f6c TZ |
61 | nvbo->bo.base.funcs = &nouveau_gem_object_funcs; |
62 | ||
55fb74ad DR |
63 | /* Initialize the embedded gem-object. We return a single gem-reference |
64 | * to the caller, instead of a normal nouveau_bo ttm reference. */ | |
019cbd4a | 65 | ret = drm_gem_object_init(dev, &nvbo->bo.base, size); |
55fb74ad | 66 | if (ret) { |
ab9ccb96 | 67 | nouveau_bo_ref(NULL, &nvbo); |
0bb21c96 TR |
68 | obj = ERR_PTR(-ENOMEM); |
69 | goto unlock; | |
22b33e8e DA |
70 | } |
71 | ||
81b61579 CK |
72 | ret = nouveau_bo_init(nvbo, size, align, NOUVEAU_GEM_DOMAIN_GART, |
73 | sg, robj); | |
019cbd4a | 74 | if (ret) { |
0bb21c96 TR |
75 | obj = ERR_PTR(ret); |
76 | goto unlock; | |
019cbd4a TR |
77 | } |
78 | ||
0bb21c96 TR |
79 | obj = &nvbo->bo.base; |
80 | ||
81 | unlock: | |
82 | dma_resv_unlock(robj); | |
83 | return obj; | |
22b33e8e DA |
84 | } |
85 | ||
ab9ccb96 | 86 | int nouveau_gem_prime_pin(struct drm_gem_object *obj) |
22b33e8e DA |
87 | { |
88 | struct nouveau_bo *nvbo = nouveau_gem_object(obj); | |
1af7c7dd | 89 | int ret; |
22b33e8e DA |
90 | |
91 | /* pin buffer into GTT */ | |
81b61579 | 92 | ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_GART, false); |
22b33e8e | 93 | if (ret) |
ab9ccb96 | 94 | return -EINVAL; |
22b33e8e | 95 | |
46b35b33 | 96 | return 0; |
22b33e8e | 97 | } |
1af7c7dd ML |
98 | |
99 | void nouveau_gem_prime_unpin(struct drm_gem_object *obj) | |
100 | { | |
101 | struct nouveau_bo *nvbo = nouveau_gem_object(obj); | |
102 | ||
103 | nouveau_bo_unpin(nvbo); | |
104 | } | |
b88baab8 DK |
105 | |
106 | struct dma_buf *nouveau_gem_prime_export(struct drm_gem_object *gobj, | |
107 | int flags) | |
108 | { | |
109 | struct nouveau_bo *nvbo = nouveau_gem_object(gobj); | |
110 | ||
111 | if (nvbo->no_share) | |
112 | return ERR_PTR(-EPERM); | |
113 | ||
114 | return drm_gem_prime_export(gobj, flags); | |
115 | } |