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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
8 * anyone can use the definitions to implement compatible drivers/servers.
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9 *
10 * Copyright (C) Red Hat, Inc., 2009, 2010
a23ea924 11 */
31610434 12
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13/* Feature bits */
14#define VIRTIO_CONSOLE_F_SIZE 0 /* Does host provide console size? */
b99fa815 15#define VIRTIO_CONSOLE_F_MULTIPORT 1 /* Does host provide multiple ports? */
c2983458 16
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17#define VIRTIO_CONSOLE_BAD_ID (~(u32)0)
18
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19struct virtio_console_config {
20 /* colums of the screens */
21 __u16 cols;
22 /* rows of the screens */
23 __u16 rows;
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24 /* max. number of ports this device can hold */
25 __u32 max_nr_ports;
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26} __attribute__((packed));
27
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28/*
29 * A message that's passed between the Host and the Guest for a
30 * particular port.
31 */
32struct virtio_console_control {
33 __u32 id; /* Port number */
34 __u16 event; /* The kind of control event (see below) */
35 __u16 value; /* Extra information for the key */
36};
37
38/* Some events for control messages */
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39#define VIRTIO_CONSOLE_DEVICE_READY 0
40#define VIRTIO_CONSOLE_PORT_ADD 1
41#define VIRTIO_CONSOLE_PORT_REMOVE 2
42#define VIRTIO_CONSOLE_PORT_READY 3
43#define VIRTIO_CONSOLE_CONSOLE_PORT 4
44#define VIRTIO_CONSOLE_RESIZE 5
45#define VIRTIO_CONSOLE_PORT_OPEN 6
46#define VIRTIO_CONSOLE_PORT_NAME 7
b99fa815 47
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48#ifdef __KERNEL__
49int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int));
50#endif /* __KERNEL__ */
51
52#endif /* _LINUX_VIRTIO_CONSOLE_H */