/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
 *      Berkeley style UIO structures   -       Alan Cox 1994.
 *
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              as published by the Free Software Foundation; either version
 *              2 of the License, or (at your option) any later version.
 */
#ifndef _UAPI__LINUX_UIO_H
#define _UAPI__LINUX_UIO_H

#include <linux/compiler.h>
#include <linux/types.h>


struct iovec
{
        void __user *iov_base;  /* BSD uses caddr_t (1003.1g requires void *) */
        __kernel_size_t iov_len; /* Must be size_t (1003.1g) */
};

struct dmabuf_cmsg {
        __u64 frag_offset;      /* offset into the dmabuf where the frag starts.
                                 */
        __u32 frag_size;        /* size of the frag. */
        __u32 frag_token;       /* token representing this frag for
                                 * DEVMEM_DONTNEED.
                                 */
        __u32  dmabuf_id;       /* dmabuf id this frag belongs to. */
        __u32 flags;            /* Currently unused. Reserved for future
                                 * uses.
                                 */
};

struct dmabuf_token {
        __u32 token_start;
        __u32 token_count;
};

/*
 *      UIO_MAXIOV shall be at least 16 1003.1g (5.4.1.1)
 */
 
#define UIO_FASTIOV     8
#define UIO_MAXIOV      1024


#endif /* _UAPI__LINUX_UIO_H */