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1#ifndef _LINUX_VIRTIO_CONSOLE_H
2#define _LINUX_VIRTIO_CONSOLE_H
86973254 3#include <linux/types.h>
e95646c3 4#include <linux/virtio_ids.h>
31610434 5#include <linux/virtio_config.h>
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6/*
7 * This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so
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8 * anyone can use the definitions to implement compatible drivers/servers:
9 *
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of IBM nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
17634ba2 33 *
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34 * Copyright (C) Red Hat, Inc., 2009, 2010, 2011
35 * Copyright (C) Amit Shah <amit.shah@redhat.com>, 2009, 2010, 2011
a23ea924 36 */
31610434 37
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38/* Feature bits */
39#define VIRTIO_CONSOLE_F_SIZE 0 /* Does host provide console size? */
b99fa815 40#define VIRTIO_CONSOLE_F_MULTIPORT 1 /* Does host provide multiple ports? */
c2983458 41
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42#define VIRTIO_CONSOLE_BAD_ID (~(u32)0)
43
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44struct virtio_console_config {
45 /* colums of the screens */
46 __u16 cols;
47 /* rows of the screens */
48 __u16 rows;
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49 /* max. number of ports this device can hold */
50 __u32 max_nr_ports;
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51} __attribute__((packed));
52
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53/*
54 * A message that's passed between the Host and the Guest for a
55 * particular port.
56 */
57struct virtio_console_control {
58 __u32 id; /* Port number */
59 __u16 event; /* The kind of control event (see below) */
60 __u16 value; /* Extra information for the key */
61};
62
63/* Some events for control messages */
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64#define VIRTIO_CONSOLE_DEVICE_READY 0
65#define VIRTIO_CONSOLE_PORT_ADD 1
66#define VIRTIO_CONSOLE_PORT_REMOVE 2
67#define VIRTIO_CONSOLE_PORT_READY 3
68#define VIRTIO_CONSOLE_CONSOLE_PORT 4
69#define VIRTIO_CONSOLE_RESIZE 5
70#define VIRTIO_CONSOLE_PORT_OPEN 6
71#define VIRTIO_CONSOLE_PORT_NAME 7
b99fa815 72
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73#ifdef __KERNEL__
74int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int));
75#endif /* __KERNEL__ */
76
77#endif /* _LINUX_VIRTIO_CONSOLE_H */