1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
 2/*
 3 *	Berkeley style UIO structures	-	Alan Cox 1994.
 4 *
 5 *		This program is free software; you can redistribute it and/or
 6 *		modify it under the terms of the GNU General Public License
 7 *		as published by the Free Software Foundation; either version
 8 *		2 of the License, or (at your option) any later version.
 9 */
10#ifndef __LINUX_UIO_H
11#define __LINUX_UIO_H
12
13
14#include <linux/types.h>
15
16
17struct iovec
18{
19	void *iov_base;	/* BSD uses caddr_t (1003.1g requires void *) */
20	__kernel_size_t iov_len; /* Must be size_t (1003.1g) */
21};
22
23struct dmabuf_cmsg {
24	__u64 frag_offset;	/* offset into the dmabuf where the frag starts.
25				 */
26	__u32 frag_size;	/* size of the frag. */
27	__u32 frag_token;	/* token representing this frag for
28				 * DEVMEM_DONTNEED.
29				 */
30	__u32  dmabuf_id;	/* dmabuf id this frag belongs to. */
31	__u32 flags;		/* Currently unused. Reserved for future
32				 * uses.
33				 */
34};
35
36struct dmabuf_token {
37	__u32 token_start;
38	__u32 token_count;
39};
40
41/*
42 *	UIO_MAXIOV shall be at least 16 1003.1g (5.4.1.1)
43 */
44 
45#define UIO_FASTIOV	8
46#define UIO_MAXIOV	1024
47
48
49#endif /* __LINUX_UIO_H */