[mirror_ubuntu-artful-kernel.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/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
 * @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;
	/**
	 * @user_name:
	 *
	 * Name of the sync file provided by userspace, for merged fences.
	 * Otherwise generated through driver callbacks (in which case the
	 * entire array is 0).
	 */
	char			user_name[32];
#ifdef CONFIG_DEBUG_FS
	struct list_head	sync_file_list;
#endif

	wait_queue_head_t	wq;
	unsigned long		flags;

	struct dma_fence	*fence;
	struct dma_fence_cb cb;
};

#define POLL_ENABLED 0

struct sync_file *sync_file_create(struct dma_fence *fence);
struct dma_fence *sync_file_get_fence(int fd);
char *sync_file_get_name(struct sync_file *sync_file, char *buf, int len);

#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>
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>
f54d1867 CW	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
a02b9dc9 GP	28	* @fence: fence with the fences in the sync_file
a02b9dc9 GP	29	* @cb: fence callback information
d4cab38e GP	30	*/
	31	struct sync_file {
	32	struct file *file;
71ebc9a3 CW	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];
d4cab38e GP	41	#ifdef CONFIG_DEBUG_FS
	42	struct list_head sync_file_list;
	43	#endif
d4cab38e GP	44
d4cab38e GP	45	wait_queue_head_t wq;
99f82843	46	unsigned long flags;
d4cab38e	47
f54d1867 CW	48	struct dma_fence *fence;
f54d1867 CW	49	struct dma_fence_cb cb;
d4cab38e GP	50	};
d4cab38e GP	51
99f82843	52	#define POLL_ENABLED 0
e2416553	53
f54d1867 CW	54	struct sync_file sync_file_create(struct dma_fence fence);
f54d1867 CW	55	struct dma_fence *sync_file_get_fence(int fd);
71ebc9a3	56	char sync_file_get_name(struct sync_file sync_file, char *buf, int len);
d4cab38e GP	57
d4cab38e GP	58	#endif /* _LINUX_SYNC_H */