uapi/linux/virtio_types.h

0001 #ifndef _UAPI_LINUX_VIRTIO_TYPES_H
0002 #define _UAPI_LINUX_VIRTIO_TYPES_H
0003 /* Type definitions for virtio implementations.
0004  *
0005  * This header is BSD licensed so anyone can use the definitions to implement
0006  * compatible drivers/servers.
0007  *
0008  * Redistribution and use in source and binary forms, with or without
0009  * modification, are permitted provided that the following conditions
0010  * are met:
0011  * 1. Redistributions of source code must retain the above copyright
0012  *    notice, this list of conditions and the following disclaimer.
0013  * 2. Redistributions in binary form must reproduce the above copyright
0014  *    notice, this list of conditions and the following disclaimer in the
0015  *    documentation and/or other materials provided with the distribution.
0016  * 3. Neither the name of IBM nor the names of its contributors
0017  *    may be used to endorse or promote products derived from this software
0018  *    without specific prior written permission.
0019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
0020  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0021  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0022  * ARE DISCLAIMED.  IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
0023  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
0024  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
0025  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
0026  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
0027  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
0028  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
0029  * SUCH DAMAGE.
0030  *
0031  * Copyright (C) 2014 Red Hat, Inc.
0032  * Author: Michael S. Tsirkin <mst@redhat.com>
0033  */
0034 #include <linux/types.h>
0035
0036 /*
0037  * __virtio{16,32,64} have the following meaning:
0038  * - __u{16,32,64} for virtio devices in legacy mode, accessed in native endian
0039  * - __le{16,32,64} for standard-compliant virtio devices
0040  */
0041
0042 typedef __u16 __bitwise __virtio16;
0043 typedef __u32 __bitwise __virtio32;
0044 typedef __u64 __bitwise __virtio64;
0045
0046 #endif /* _UAPI_LINUX_VIRTIO_TYPES_H */