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
46struct drm_prime_file_private {
47/* private: */
48 struct mutex lock;
49 struct rb_root dmabufs;
50 struct rb_root handles;
51};
52
53struct device;
54
55struct dma_buf_export_info;
56struct dma_buf;
57struct dma_buf_attachment;
58
59enum dma_data_direction;
60
61struct drm_device;
62struct drm_gem_object;
63struct drm_file;
64
65struct device;
66
67struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
68 struct drm_gem_object *obj,
69 int flags);
70int drm_gem_prime_handle_to_fd(struct drm_device *dev,
71 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
72 int *prime_fd);
73int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
74struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
75 struct dma_buf *dma_buf);
76
77struct drm_gem_object *drm_gem_prime_import_dev(struct drm_device *dev,
78 struct dma_buf *dma_buf,
79 struct device *attach_dev);
80
81int drm_gem_prime_fd_to_handle(struct drm_device *dev,
82 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
83struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev,
84 struct dma_buf_export_info *exp_info);
85void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
86int drm_gem_map_attach(struct dma_buf *dma_buf,
87 struct dma_buf_attachment *attach);
88void drm_gem_map_detach(struct dma_buf *dma_buf,
89 struct dma_buf_attachment *attach);
90struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
91 enum dma_data_direction dir);
92void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
93 struct sg_table *sgt,
94 enum dma_data_direction dir);
95void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf);
96void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr);
97int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma);
98
99int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
100 dma_addr_t *addrs, int max_pages);
101struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages);
102void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
103
104
105#endif /* __DRM_PRIME_H__ */
106