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/include/linux/virtio_console.h

https://github.com/airy09/android_kernel_sony_apq8064
C Header | 77 lines | 30 code | 7 blank | 40 comment | 0 complexity | 89cb468cdd4badd45c3ab3c59d1111b9 MD5 | raw file
 1#ifndef _LINUX_VIRTIO_CONSOLE_H
 2#define _LINUX_VIRTIO_CONSOLE_H
 3#include <linux/types.h>
 4#include <linux/virtio_ids.h>
 5#include <linux/virtio_config.h>
 6/*
 7 * This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so
 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.
33 *
34 * Copyright (C) Red Hat, Inc., 2009, 2010, 2011
35 * Copyright (C) Amit Shah <amit.shah@redhat.com>, 2009, 2010, 2011
36 */
37
38/* Feature bits */
39#define VIRTIO_CONSOLE_F_SIZE	0	/* Does host provide console size? */
40#define VIRTIO_CONSOLE_F_MULTIPORT 1	/* Does host provide multiple ports? */
41
42#define VIRTIO_CONSOLE_BAD_ID		(~(u32)0)
43
44struct virtio_console_config {
45	/* colums of the screens */
46	__u16 cols;
47	/* rows of the screens */
48	__u16 rows;
49	/* max. number of ports this device can hold */
50	__u32 max_nr_ports;
51} __attribute__((packed));
52
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 */
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
72
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 */