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1/*
2 * include/linux/sync_file.h
3 *
4 * Copyright (C) 2012 Google, Inc.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 */
12
13#ifndef _LINUX_SYNC_FILE_H
14#define _LINUX_SYNC_FILE_H
15
16#include <linux/types.h>
17#include <linux/kref.h>
18#include <linux/ktime.h>
19#include <linux/list.h>
20#include <linux/spinlock.h>
21#include <linux/dma-fence.h>
22#include <linux/dma-fence-array.h>
23
24/**
25 * struct sync_file - sync file to export to the userspace
26 * @file: file representing this fence
27 * @kref: reference count on fence.
28 * @name: name of sync_file. Useful for debugging
29 * @sync_file_list: membership in global file list
30 * @wq: wait queue for fence signaling
31 * @fence: fence with the fences in the sync_file
32 * @cb: fence callback information
33 */
34struct sync_file {
35 struct file *file;
36 struct kref kref;
37 char name[32];
38#ifdef CONFIG_DEBUG_FS
39 struct list_head sync_file_list;
40#endif
41
42 wait_queue_head_t wq;
43
44 struct dma_fence *fence;
45 struct dma_fence_cb cb;
46};
47
48#define POLL_ENABLED DMA_FENCE_FLAG_USER_BITS
49
50struct sync_file *sync_file_create(struct dma_fence *fence);
51struct dma_fence *sync_file_get_fence(int fd);
52
53#endif /* _LINUX_SYNC_H */