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d4cab38e GP |
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> | |
d4cab38e GP |
17 | #include <linux/ktime.h> |
18 | #include <linux/list.h> | |
19 | #include <linux/spinlock.h> | |
f54d1867 CW |
20 | #include <linux/dma-fence.h> |
21 | #include <linux/dma-fence-array.h> | |
d4cab38e GP |
22 | |
23 | /** | |
24 | * struct sync_file - sync file to export to the userspace | |
25 | * @file: file representing this fence | |
d4cab38e | 26 | * @sync_file_list: membership in global file list |
d4cab38e | 27 | * @wq: wait queue for fence signaling |
300238ce | 28 | * @flags: flags for the sync_file |
a02b9dc9 GP |
29 | * @fence: fence with the fences in the sync_file |
30 | * @cb: fence callback information | |
300238ce GP |
31 | * |
32 | * flags: | |
33 | * POLL_ENABLED: whether userspace is currently poll()'ing or not | |
d4cab38e GP |
34 | */ |
35 | struct sync_file { | |
36 | struct file *file; | |
71ebc9a3 CW |
37 | /** |
38 | * @user_name: | |
39 | * | |
40 | * Name of the sync file provided by userspace, for merged fences. | |
41 | * Otherwise generated through driver callbacks (in which case the | |
42 | * entire array is 0). | |
43 | */ | |
44 | char user_name[32]; | |
d4cab38e GP |
45 | #ifdef CONFIG_DEBUG_FS |
46 | struct list_head sync_file_list; | |
47 | #endif | |
d4cab38e GP |
48 | |
49 | wait_queue_head_t wq; | |
db1fc97c | 50 | unsigned long flags; |
d4cab38e | 51 | |
f54d1867 CW |
52 | struct dma_fence *fence; |
53 | struct dma_fence_cb cb; | |
d4cab38e GP |
54 | }; |
55 | ||
db1fc97c | 56 | #define POLL_ENABLED 0 |
e2416553 | 57 | |
f54d1867 CW |
58 | struct sync_file *sync_file_create(struct dma_fence *fence); |
59 | struct dma_fence *sync_file_get_fence(int fd); | |
71ebc9a3 | 60 | char *sync_file_get_name(struct sync_file *sync_file, char *buf, int len); |
d4cab38e GP |
61 | |
62 | #endif /* _LINUX_SYNC_H */ |