1/*	$NetBSD: dma-fence-array.h,v 1.6 2021/12/19 12:23:50 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_DMA_FENCE_ARRAY_H_
33#define	_LINUX_DMA_FENCE_ARRAY_H_
34
35#include <sys/stdbool.h>
36
37#include <linux/dma-fence.h>
38#include <linux/irq_work.h>
39
40#define	dma_fence_array_create		linux_dma_fence_array_create
41#define	dma_fence_is_array		linux_dma_fence_is_array
42#define	to_dma_fence_array		linux_to_dma_fence_array
43
44struct dma_fence_array_cb {
45	struct dma_fence_array	*dfac_array;
46	struct dma_fence_cb	dfac_cb;
47};
48
49struct dma_fence_array {
50	struct dma_fence		base;
51	struct dma_fence		**fences;
52	unsigned			num_fences;
53
54	spinlock_t			dfa_lock;
55	int				dfa_npending;
56	struct irq_work			dfa_work;
57	struct dma_fence_array_cb	dfa_cb[];
58};
59
60struct dma_fence_array *
61	dma_fence_array_create(int, struct dma_fence **, unsigned, unsigned,
62	    bool);
63
64bool	dma_fence_is_array(struct dma_fence *);
65struct dma_fence_array *
66	to_dma_fence_array(struct dma_fence *);
67
68#endif	/* _LINUX_DMA_FENCE_ARRAY_H_ */
69