/*	$NetBSD: sync_file.h,v 1.5 2022/07/17 14:11:07 riastradh Exp $	*/

/*-
 * Copyright (c) 2018 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Taylor R. Campbell.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef	_LINUX_SYNC_FILE_H_
#define	_LINUX_SYNC_FILE_H_

#include <sys/mutex.h>
#include <sys/select.h>

#include <linux/dma-fence.h>

#define	sync_file_create	linux_sync_file_create
#define	sync_file_get_fence	linux_sync_file_get_fence

struct dma_fence;
struct file;
struct sync_file;

struct sync_file {
	/* Linux API */
	struct file		*file;

	/* Private */
	struct dma_fence	*sf_fence;
	kmutex_t		sf_lock;
	struct selinfo		sf_selq;
	struct dma_fence_cb	sf_fcb;
	bool			sf_polling;
	bool			sf_signalled;
};

struct sync_file *
	sync_file_create(struct dma_fence *, struct file *);
struct dma_fence *
	sync_file_get_fence(int);

#endif	/* _LINUX_SYNC_FILE_H_ */