[linux-2.6-block.git] / include / linux / sync_file.h

/*
 * include/linux/sync_file.h
 *
 * Copyright (C) 2012 Google, Inc.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#ifndef _LINUX_SYNC_FILE_H
#define _LINUX_SYNC_FILE_H

#include <linux/types.h>
#include <linux/kref.h>
#include <linux/ktime.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/dma-fence.h>
#include <linux/dma-fence-array.h>

/**
 * struct sync_file - sync file to export to the userspace
 * @file:		file representing this fence
 * @kref:		reference count on fence.
 * @name:		name of sync_file.  Useful for debugging
 * @sync_file_list:	membership in global file list
 * @wq:			wait queue for fence signaling
 * @fence:		fence with the fences in the sync_file
 * @cb:			fence callback information
 */
struct sync_file {
	struct file		*file;
	struct kref		kref;
	char			name[32];
#ifdef CONFIG_DEBUG_FS
	struct list_head	sync_file_list;
#endif

	wait_queue_head_t	wq;

	struct dma_fence	*fence;
	struct dma_fence_cb cb;
};

#define POLL_ENABLED DMA_FENCE_FLAG_USER_BITS

struct sync_file *sync_file_create(struct dma_fence *fence);
struct dma_fence *sync_file_get_fence(int fd);

#endif /* _LINUX_SYNC_H */
Commit	Line	Data
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>
	17	#include <linux/kref.h>
	18	#include <linux/ktime.h>
	19	#include <linux/list.h>
	20	#include <linux/spinlock.h>
f54d1867 CW	21	#include <linux/dma-fence.h>
f54d1867 CW	22	#include <linux/dma-fence-array.h>
d4cab38e GP	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
d4cab38e	30	* @wq: wait queue for fence signaling
a02b9dc9 GP	31	* @fence: fence with the fences in the sync_file
a02b9dc9 GP	32	* @cb: fence callback information
d4cab38e GP	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
d4cab38e GP	41
d4cab38e GP	42	wait_queue_head_t wq;
d4cab38e	43
f54d1867 CW	44	struct dma_fence *fence;
f54d1867 CW	45	struct dma_fence_cb cb;
d4cab38e GP	46	};
d4cab38e GP	47
f54d1867	48	#define POLL_ENABLED DMA_FENCE_FLAG_USER_BITS
e2416553	49
f54d1867 CW	50	struct sync_file sync_file_create(struct dma_fence fence);
f54d1867 CW	51	struct dma_fence *sync_file_get_fence(int fd);
d4cab38e GP	52
d4cab38e GP	53	#endif /* _LINUX_SYNC_H */