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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/ktime.h> | |
18 | #include <linux/list.h> | |
19 | #include <linux/spinlock.h> | |
20 | #include <linux/dma-fence.h> | |
21 | #include <linux/dma-fence-array.h> | |
22 | ||
23 | /** | |
24 | * struct sync_file - sync file to export to the userspace | |
25 | * @file: file representing this fence | |
26 | * @sync_file_list: membership in global file list | |
27 | * @wq: wait queue for fence signaling | |
28 | * @fence: fence with the fences in the sync_file | |
29 | * @cb: fence callback information | |
30 | */ | |
31 | struct sync_file { | |
32 | struct file *file; | |
33 | /** | |
34 | * @user_name: | |
35 | * | |
36 | * Name of the sync file provided by userspace, for merged fences. | |
37 | * Otherwise generated through driver callbacks (in which case the | |
38 | * entire array is 0). | |
39 | */ | |
40 | char user_name[32]; | |
41 | #ifdef CONFIG_DEBUG_FS | |
42 | struct list_head sync_file_list; | |
43 | #endif | |
44 | ||
45 | wait_queue_head_t wq; | |
46 | unsigned long flags; | |
47 | ||
48 | struct dma_fence *fence; | |
49 | struct dma_fence_cb cb; | |
50 | }; | |
51 | ||
52 | #define POLL_ENABLED 0 | |
53 | ||
54 | struct sync_file *sync_file_create(struct dma_fence *fence); | |
55 | struct dma_fence *sync_file_get_fence(int fd); | |
56 | char *sync_file_get_name(struct sync_file *sync_file, char *buf, int len); | |
57 | ||
58 | #endif /* _LINUX_SYNC_H */ |