xref: /freebsd/sys/dev/virtio/mmio/virtio_mmio.h (revision 298022457a9a016cbdda4e22d751abb5cd91c919)
1 /*-
2  * Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com>
3  * All rights reserved.
4  *
5  * This software was developed by SRI International and the University of
6  * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
7  * ("CTSRD"), as part of the DARPA CRASH research programme.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  *
30  * $FreeBSD$
31  */
32 
33 #ifndef	_VIRTIO_MMIO_H
34 #define	_VIRTIO_MMIO_H
35 
36 #define	VIRTIO_MMIO_MAGIC_VALUE		0x000
37 #define	VIRTIO_MMIO_VERSION		0x004
38 #define	VIRTIO_MMIO_DEVICE_ID		0x008
39 #define	VIRTIO_MMIO_VENDOR_ID		0x00c
40 #define	VIRTIO_MMIO_HOST_FEATURES	0x010
41 #define	VIRTIO_MMIO_HOST_FEATURES_SEL	0x014
42 #define	VIRTIO_MMIO_GUEST_FEATURES	0x020
43 #define	VIRTIO_MMIO_GUEST_FEATURES_SEL	0x024
44 #define	VIRTIO_MMIO_GUEST_PAGE_SIZE	0x028
45 #define	VIRTIO_MMIO_QUEUE_SEL		0x030
46 #define	VIRTIO_MMIO_QUEUE_NUM_MAX	0x034
47 #define	VIRTIO_MMIO_QUEUE_NUM		0x038
48 #define	VIRTIO_MMIO_QUEUE_ALIGN		0x03c
49 #define	VIRTIO_MMIO_QUEUE_PFN		0x040
50 #define	VIRTIO_MMIO_QUEUE_NOTIFY	0x050
51 #define	VIRTIO_MMIO_INTERRUPT_STATUS	0x060
52 #define	VIRTIO_MMIO_INTERRUPT_ACK	0x064
53 #define	VIRTIO_MMIO_STATUS		0x070
54 #define	VIRTIO_MMIO_CONFIG		0x100
55 #define	VIRTIO_MMIO_INT_VRING		(1 << 0)
56 #define	VIRTIO_MMIO_INT_CONFIG		(1 << 1)
57 #define	VIRTIO_MMIO_VRING_ALIGN		4096
58 
59 #endif /* _VIRTIO_MMIO_H */
60