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      1 /*	$NetBSD: sync_file.h,v 1.5 2022/07/17 14:11:07 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2018 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Taylor R. Campbell.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef	_LINUX_SYNC_FILE_H_
     33 #define	_LINUX_SYNC_FILE_H_
     34 
     35 #include <sys/mutex.h>
     36 #include <sys/select.h>
     37 
     38 #include <linux/dma-fence.h>
     39 
     40 #define	sync_file_create	linux_sync_file_create
     41 #define	sync_file_get_fence	linux_sync_file_get_fence
     42 
     43 struct dma_fence;
     44 struct file;
     45 struct sync_file;
     46 
     47 struct sync_file {
     48 	/* Linux API */
     49 	struct file		*file;
     50 
     51 	/* Private */
     52 	struct dma_fence	*sf_fence;
     53 	kmutex_t		sf_lock;
     54 	struct selinfo		sf_selq;
     55 	struct dma_fence_cb	sf_fcb;
     56 	bool			sf_polling;
     57 	bool			sf_signalled;
     58 };
     59 
     60 struct sync_file *
     61 	sync_file_create(struct dma_fence *, struct file *);
     62 struct dma_fence *
     63 	sync_file_get_fence(int);
     64 
     65 #endif	/* _LINUX_SYNC_FILE_H_ */
     66