diff options
author | Thomas Hellstrom <thellstrom@vmware.com> | 2013-11-13 04:50:46 -0500 |
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committer | Thomas Hellstrom <thellstrom@vmware.com> | 2013-11-18 07:11:53 -0500 |
commit | 69977ff55eac7fc26fb78de5ec1d9a9ab802d9fd (patch) | |
tree | f0002adc0a8bc0b417b7b99e8f405e53dc267a25 /drivers/gpu/drm/vmwgfx/vmwgfx_prime.c | |
parent | 65981f7681abdf92b25942222b629b9c512d0705 (diff) |
drm/vmwgfx: Hook up the prime ioctls
Also provide a completely dumb dma-buf ops implementation.
Once we have other virtual dma-buf aware devices, we need to provide
something better.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_prime.c')
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_prime.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c new file mode 100644 index 000000000000..31fe32d8d65a --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c | |||
@@ -0,0 +1,137 @@ | |||
1 | /************************************************************************** | ||
2 | * | ||
3 | * Copyright © 2013 VMware, Inc., Palo Alto, CA., USA | ||
4 | * All Rights Reserved. | ||
5 | * | ||
6 | * Permission is hereby granted, free of charge, to any person obtaining a | ||
7 | * copy of this software and associated documentation files (the | ||
8 | * "Software"), to deal in the Software without restriction, including | ||
9 | * without limitation the rights to use, copy, modify, merge, publish, | ||
10 | * distribute, sub license, and/or sell copies of the Software, and to | ||
11 | * permit persons to whom the Software is furnished to do so, subject to | ||
12 | * the following conditions: | ||
13 | * | ||
14 | * The above copyright notice and this permission notice (including the | ||
15 | * next paragraph) shall be included in all copies or substantial portions | ||
16 | * of the Software. | ||
17 | * | ||
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | ||
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | ||
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | ||
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | ||
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
25 | * | ||
26 | **************************************************************************/ | ||
27 | /* | ||
28 | * Authors: | ||
29 | * Thomas Hellstrom <thellstrom@vmware.com> | ||
30 | * | ||
31 | */ | ||
32 | |||
33 | #include "vmwgfx_drv.h" | ||
34 | #include <linux/dma-buf.h> | ||
35 | #include <drm/ttm/ttm_object.h> | ||
36 | |||
37 | /* | ||
38 | * DMA-BUF attach- and mapping methods. No need to implement | ||
39 | * these until we have other virtual devices use them. | ||
40 | */ | ||
41 | |||
42 | static int vmw_prime_map_attach(struct dma_buf *dma_buf, | ||
43 | struct device *target_dev, | ||
44 | struct dma_buf_attachment *attach) | ||
45 | { | ||
46 | return -ENOSYS; | ||
47 | } | ||
48 | |||
49 | static void vmw_prime_map_detach(struct dma_buf *dma_buf, | ||
50 | struct dma_buf_attachment *attach) | ||
51 | { | ||
52 | } | ||
53 | |||
54 | static struct sg_table *vmw_prime_map_dma_buf(struct dma_buf_attachment *attach, | ||
55 | enum dma_data_direction dir) | ||
56 | { | ||
57 | return ERR_PTR(-ENOSYS); | ||
58 | } | ||
59 | |||
60 | static void vmw_prime_unmap_dma_buf(struct dma_buf_attachment *attach, | ||
61 | struct sg_table *sgb, | ||
62 | enum dma_data_direction dir) | ||
63 | { | ||
64 | } | ||
65 | |||
66 | static void *vmw_prime_dmabuf_vmap(struct dma_buf *dma_buf) | ||
67 | { | ||
68 | return NULL; | ||
69 | } | ||
70 | |||
71 | static void vmw_prime_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr) | ||
72 | { | ||
73 | } | ||
74 | |||
75 | static void *vmw_prime_dmabuf_kmap_atomic(struct dma_buf *dma_buf, | ||
76 | unsigned long page_num) | ||
77 | { | ||
78 | return NULL; | ||
79 | } | ||
80 | |||
81 | static void vmw_prime_dmabuf_kunmap_atomic(struct dma_buf *dma_buf, | ||
82 | unsigned long page_num, void *addr) | ||
83 | { | ||
84 | |||
85 | } | ||
86 | static void *vmw_prime_dmabuf_kmap(struct dma_buf *dma_buf, | ||
87 | unsigned long page_num) | ||
88 | { | ||
89 | return NULL; | ||
90 | } | ||
91 | |||
92 | static void vmw_prime_dmabuf_kunmap(struct dma_buf *dma_buf, | ||
93 | unsigned long page_num, void *addr) | ||
94 | { | ||
95 | |||
96 | } | ||
97 | |||
98 | static int vmw_prime_dmabuf_mmap(struct dma_buf *dma_buf, | ||
99 | struct vm_area_struct *vma) | ||
100 | { | ||
101 | WARN_ONCE(true, "Attempted use of dmabuf mmap. Bad.\n"); | ||
102 | return -ENOSYS; | ||
103 | } | ||
104 | |||
105 | const struct dma_buf_ops vmw_prime_dmabuf_ops = { | ||
106 | .attach = vmw_prime_map_attach, | ||
107 | .detach = vmw_prime_map_detach, | ||
108 | .map_dma_buf = vmw_prime_map_dma_buf, | ||
109 | .unmap_dma_buf = vmw_prime_unmap_dma_buf, | ||
110 | .release = NULL, | ||
111 | .kmap = vmw_prime_dmabuf_kmap, | ||
112 | .kmap_atomic = vmw_prime_dmabuf_kmap_atomic, | ||
113 | .kunmap = vmw_prime_dmabuf_kunmap, | ||
114 | .kunmap_atomic = vmw_prime_dmabuf_kunmap_atomic, | ||
115 | .mmap = vmw_prime_dmabuf_mmap, | ||
116 | .vmap = vmw_prime_dmabuf_vmap, | ||
117 | .vunmap = vmw_prime_dmabuf_vunmap, | ||
118 | }; | ||
119 | |||
120 | int vmw_prime_fd_to_handle(struct drm_device *dev, | ||
121 | struct drm_file *file_priv, | ||
122 | int fd, u32 *handle) | ||
123 | { | ||
124 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | ||
125 | |||
126 | return ttm_prime_fd_to_handle(tfile, fd, handle); | ||
127 | } | ||
128 | |||
129 | int vmw_prime_handle_to_fd(struct drm_device *dev, | ||
130 | struct drm_file *file_priv, | ||
131 | uint32_t handle, uint32_t flags, | ||
132 | int *prime_fd) | ||
133 | { | ||
134 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | ||
135 | |||
136 | return ttm_prime_handle_to_fd(tfile, handle, flags, prime_fd); | ||
137 | } | ||