1 | /* |
2 | * Copyright © 2012 Red Hat |
3 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. |
4 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. |
5 | * Copyright (c) 2009-2010, Code Aurora Forum. |
6 | * |
7 | * Permission is hereby granted, free of charge, to any person obtaining a |
8 | * copy of this software and associated documentation files (the "Software"), |
9 | * to deal in the Software without restriction, including without limitation |
10 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
11 | * and/or sell copies of the Software, and to permit persons to whom the |
12 | * Software is furnished to do so, subject to the following conditions: |
13 | * |
14 | * The above copyright notice and this permission notice (including the next |
15 | * paragraph) shall be included in all copies or substantial portions of the |
16 | * 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 NONINFRINGEMENT. IN NO EVENT SHALL |
21 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
23 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
24 | * IN THE SOFTWARE. |
25 | * |
26 | * Authors: |
27 | * Dave Airlie <airlied@redhat.com> |
28 | * Rob Clark <rob.clark@linaro.org> |
29 | * |
30 | */ |
31 | |
32 | #ifndef __DRM_PRIME_H__ |
33 | #define __DRM_PRIME_H__ |
34 | |
35 | #include <linux/mutex.h> |
36 | #include <linux/rbtree.h> |
37 | #include <linux/scatterlist.h> |
38 | |
39 | /** |
40 | * struct drm_prime_file_private - per-file tracking for PRIME |
41 | * |
42 | * This just contains the internal &struct dma_buf and handle caches for each |
43 | * &struct drm_file used by the PRIME core code. |
44 | */ |
45 | struct drm_prime_file_private { |
46 | /* private: */ |
47 | struct mutex lock; |
48 | struct rb_root dmabufs; |
49 | struct rb_root handles; |
50 | }; |
51 | |
52 | struct device; |
53 | |
54 | struct dma_buf_export_info; |
55 | struct dma_buf; |
56 | struct dma_buf_attachment; |
57 | struct iosys_map; |
58 | |
59 | enum dma_data_direction; |
60 | |
61 | struct drm_device; |
62 | struct drm_gem_object; |
63 | |
64 | /* core prime functions */ |
65 | struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev, |
66 | struct dma_buf_export_info *exp_info); |
67 | void drm_gem_dmabuf_release(struct dma_buf *dma_buf); |
68 | |
69 | /* helper functions for exporting */ |
70 | int drm_gem_map_attach(struct dma_buf *dma_buf, |
71 | struct dma_buf_attachment *attach); |
72 | void drm_gem_map_detach(struct dma_buf *dma_buf, |
73 | struct dma_buf_attachment *attach); |
74 | struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach, |
75 | enum dma_data_direction dir); |
76 | void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach, |
77 | struct sg_table *sgt, |
78 | enum dma_data_direction dir); |
79 | int drm_gem_dmabuf_vmap(struct dma_buf *dma_buf, struct iosys_map *map); |
80 | void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, struct iosys_map *map); |
81 | |
82 | int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); |
83 | int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma); |
84 | |
85 | struct sg_table *drm_prime_pages_to_sg(struct drm_device *dev, |
86 | struct page **pages, unsigned int nr_pages); |
87 | struct dma_buf *drm_gem_prime_export(struct drm_gem_object *obj, |
88 | int flags); |
89 | |
90 | unsigned long drm_prime_get_contiguous_size(struct sg_table *sgt); |
91 | |
92 | /* helper functions for importing */ |
93 | struct drm_gem_object *drm_gem_prime_import_dev(struct drm_device *dev, |
94 | struct dma_buf *dma_buf, |
95 | struct device *attach_dev); |
96 | struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev, |
97 | struct dma_buf *dma_buf); |
98 | |
99 | void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg); |
100 | |
101 | int drm_prime_sg_to_page_array(struct sg_table *sgt, struct page **pages, |
102 | int max_pages); |
103 | int drm_prime_sg_to_dma_addr_array(struct sg_table *sgt, dma_addr_t *addrs, |
104 | int max_pages); |
105 | |
106 | #endif /* __DRM_PRIME_H__ */ |
107 | |