1 | // SPDX-License-Identifier: GPL-2.0 OR MIT |
2 | /************************************************************************** |
3 | * |
4 | * Copyright 2013 VMware, Inc., Palo Alto, CA., USA |
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 "ttm_object.h" |
35 | #include <linux/dma-buf.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 dma_buf_attachment *attach) |
44 | { |
45 | return -ENOSYS; |
46 | } |
47 | |
48 | static void vmw_prime_map_detach(struct dma_buf *dma_buf, |
49 | struct dma_buf_attachment *attach) |
50 | { |
51 | } |
52 | |
53 | static struct sg_table *vmw_prime_map_dma_buf(struct dma_buf_attachment *attach, |
54 | enum dma_data_direction dir) |
55 | { |
56 | return ERR_PTR(error: -ENOSYS); |
57 | } |
58 | |
59 | static void vmw_prime_unmap_dma_buf(struct dma_buf_attachment *attach, |
60 | struct sg_table *sgb, |
61 | enum dma_data_direction dir) |
62 | { |
63 | } |
64 | |
65 | const struct dma_buf_ops vmw_prime_dmabuf_ops = { |
66 | .attach = vmw_prime_map_attach, |
67 | .detach = vmw_prime_map_detach, |
68 | .map_dma_buf = vmw_prime_map_dma_buf, |
69 | .unmap_dma_buf = vmw_prime_unmap_dma_buf, |
70 | .release = NULL, |
71 | }; |
72 | |
73 | int vmw_prime_fd_to_handle(struct drm_device *dev, |
74 | struct drm_file *file_priv, |
75 | int fd, u32 *handle) |
76 | { |
77 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
78 | int ret = ttm_prime_fd_to_handle(tfile, fd, handle); |
79 | |
80 | if (ret) |
81 | ret = drm_gem_prime_fd_to_handle(dev, file_priv, prime_fd: fd, handle); |
82 | |
83 | return ret; |
84 | } |
85 | |
86 | int vmw_prime_handle_to_fd(struct drm_device *dev, |
87 | struct drm_file *file_priv, |
88 | uint32_t handle, uint32_t flags, |
89 | int *prime_fd) |
90 | { |
91 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
92 | int ret; |
93 | |
94 | if (handle > VMWGFX_NUM_MOB) |
95 | ret = ttm_prime_handle_to_fd(tfile, handle, flags, prime_fd); |
96 | else |
97 | ret = drm_gem_prime_handle_to_fd(dev, file_priv, handle, flags, prime_fd); |
98 | |
99 | return ret; |
100 | } |
101 | |