| | 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 | */ |
| | 34 | struct 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 | |
| | 50 | struct sync_file *sync_file_create(struct dma_fence *fence); |
| | 51 | struct dma_fence *sync_file_get_fence(int fd); |
| | 52 | |
| | 53 | #endif /* _LINUX_SYNC_H */ |
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