Loading...
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 <linux/dma-buf.h>
26
27#include "nouveau_drv.h"
28#include "nouveau_gem.h"
29
30struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj)
31{
32 struct nouveau_bo *nvbo = nouveau_gem_object(obj);
33
34 return drm_prime_pages_to_sg(obj->dev, nvbo->bo.ttm->pages,
35 nvbo->bo.ttm->num_pages);
36}
37
38struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev,
39 struct dma_buf_attachment *attach,
40 struct sg_table *sg)
41{
42 struct nouveau_drm *drm = nouveau_drm(dev);
43 struct drm_gem_object *obj;
44 struct nouveau_bo *nvbo;
45 struct dma_resv *robj = attach->dmabuf->resv;
46 u64 size = attach->dmabuf->size;
47 int align = 0;
48 int ret;
49
50 dma_resv_lock(robj, NULL);
51 nvbo = nouveau_bo_alloc(&drm->client, &size, &align,
52 NOUVEAU_GEM_DOMAIN_GART, 0, 0);
53 if (IS_ERR(nvbo)) {
54 obj = ERR_CAST(nvbo);
55 goto unlock;
56 }
57
58 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART;
59
60 nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
61
62 /* Initialize the embedded gem-object. We return a single gem-reference
63 * to the caller, instead of a normal nouveau_bo ttm reference. */
64 ret = drm_gem_object_init(dev, &nvbo->bo.base, size);
65 if (ret) {
66 nouveau_bo_ref(NULL, &nvbo);
67 obj = ERR_PTR(-ENOMEM);
68 goto unlock;
69 }
70
71 ret = nouveau_bo_init(nvbo, size, align, NOUVEAU_GEM_DOMAIN_GART,
72 sg, robj);
73 if (ret) {
74 obj = ERR_PTR(ret);
75 goto unlock;
76 }
77
78 obj = &nvbo->bo.base;
79
80unlock:
81 dma_resv_unlock(robj);
82 return obj;
83}
84
85int nouveau_gem_prime_pin(struct drm_gem_object *obj)
86{
87 struct nouveau_bo *nvbo = nouveau_gem_object(obj);
88 int ret;
89
90 /* pin buffer into GTT */
91 ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_GART, false);
92 if (ret)
93 return -EINVAL;
94
95 return 0;
96}
97
98void nouveau_gem_prime_unpin(struct drm_gem_object *obj)
99{
100 struct nouveau_bo *nvbo = nouveau_gem_object(obj);
101
102 nouveau_bo_unpin(nvbo);
103}
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 <linux/dma-buf.h>
26#include <drm/ttm/ttm_tt.h>
27
28#include "nouveau_drv.h"
29#include "nouveau_gem.h"
30
31struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj)
32{
33 struct nouveau_bo *nvbo = nouveau_gem_object(obj);
34
35 return drm_prime_pages_to_sg(obj->dev, nvbo->bo.ttm->pages,
36 nvbo->bo.ttm->num_pages);
37}
38
39struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev,
40 struct dma_buf_attachment *attach,
41 struct sg_table *sg)
42{
43 struct nouveau_drm *drm = nouveau_drm(dev);
44 struct drm_gem_object *obj;
45 struct nouveau_bo *nvbo;
46 struct dma_resv *robj = attach->dmabuf->resv;
47 u64 size = attach->dmabuf->size;
48 int align = 0;
49 int ret;
50
51 dma_resv_lock(robj, NULL);
52 nvbo = nouveau_bo_alloc(&drm->client, &size, &align,
53 NOUVEAU_GEM_DOMAIN_GART, 0, 0, true);
54 if (IS_ERR(nvbo)) {
55 obj = ERR_CAST(nvbo);
56 goto unlock;
57 }
58
59 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART;
60
61 nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
62
63 /* Initialize the embedded gem-object. We return a single gem-reference
64 * to the caller, instead of a normal nouveau_bo ttm reference. */
65 ret = drm_gem_object_init(dev, &nvbo->bo.base, size);
66 if (ret) {
67 nouveau_bo_ref(NULL, &nvbo);
68 obj = ERR_PTR(-ENOMEM);
69 goto unlock;
70 }
71
72 ret = nouveau_bo_init(nvbo, size, align, NOUVEAU_GEM_DOMAIN_GART,
73 sg, robj);
74 if (ret) {
75 obj = ERR_PTR(ret);
76 goto unlock;
77 }
78
79 obj = &nvbo->bo.base;
80
81unlock:
82 dma_resv_unlock(robj);
83 return obj;
84}
85
86int nouveau_gem_prime_pin(struct drm_gem_object *obj)
87{
88 struct nouveau_bo *nvbo = nouveau_gem_object(obj);
89 int ret;
90
91 /* pin buffer into GTT */
92 ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_GART, false);
93 if (ret)
94 return -EINVAL;
95
96 return 0;
97}
98
99void 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}
105
106struct 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}