[linux-block.git] / include / linux / virtio_console.h

#ifndef _LINUX_VIRTIO_CONSOLE_H
#define _LINUX_VIRTIO_CONSOLE_H
#include <linux/types.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
/*
 * This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so
 * anyone can use the definitions to implement compatible drivers/servers.
 *
 * Copyright (C) Red Hat, Inc., 2009, 2010
 */

/* Feature bits */
#define VIRTIO_CONSOLE_F_SIZE	0	/* Does host provide console size? */
#define VIRTIO_CONSOLE_F_MULTIPORT 1	/* Does host provide multiple ports? */

#define VIRTIO_CONSOLE_BAD_ID		(~(u32)0)

struct virtio_console_config {
	/* colums of the screens */
	__u16 cols;
	/* rows of the screens */
	__u16 rows;
	/* max. number of ports this device can hold */
	__u32 max_nr_ports;
	/* number of ports added so far */
	__u32 nr_ports;
} __attribute__((packed));

/*
 * A message that's passed between the Host and the Guest for a
 * particular port.
 */
struct virtio_console_control {
	__u32 id;		/* Port number */
	__u16 event;		/* The kind of control event (see below) */
	__u16 value;		/* Extra information for the key */
};

/* Some events for control messages */
#define VIRTIO_CONSOLE_PORT_READY	0
#define VIRTIO_CONSOLE_CONSOLE_PORT	1
#define VIRTIO_CONSOLE_RESIZE		2
#define VIRTIO_CONSOLE_PORT_OPEN	3
#define VIRTIO_CONSOLE_PORT_NAME	4
#define VIRTIO_CONSOLE_PORT_REMOVE	5
#define VIRTIO_CONSOLE_DEVICE_READY	6

#ifdef __KERNEL__
int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int));
#endif /* __KERNEL__ */

#endif /* _LINUX_VIRTIO_CONSOLE_H */
Commit	Line	Data
31610434 RR	1	#ifndef _LINUX_VIRTIO_CONSOLE_H
31610434 RR	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>
a23ea924 RR	6	/*
	7	* This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so
	8	* anyone can use the definitions to implement compatible drivers/servers.
17634ba2 AS	9	*
17634ba2 AS	10	* Copyright (C) Red Hat, Inc., 2009, 2010
a23ea924	11	*/
31610434	12
c2983458 CB	13	/* Feature bits */
c2983458 CB	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
eaeff960 AS	17	#define VIRTIO_CONSOLE_BAD_ID (~(u32)0)
eaeff960 AS	18
c2983458 CB	19	struct virtio_console_config {
	20	/* colums of the screens */
	21	__u16 cols;
	22	/* rows of the screens */
	23	__u16 rows;
b99fa815 AS	24	/* max. number of ports this device can hold */
	25	__u32 max_nr_ports;
	26	/* number of ports added so far */
	27	__u32 nr_ports;
c2983458 CB	28	} __attribute__((packed));
c2983458 CB	29
b99fa815 AS	30	/*
	31	* A message that's passed between the Host and the Guest for a
	32	* particular port.
	33	*/
	34	struct virtio_console_control {
	35	__u32 id; /* Port number */
	36	__u16 event; /* The kind of control event (see below) */
	37	__u16 value; /* Extra information for the key */
	38	};
	39
	40	/* Some events for control messages */
	41	#define VIRTIO_CONSOLE_PORT_READY 0
	42	#define VIRTIO_CONSOLE_CONSOLE_PORT 1
	43	#define VIRTIO_CONSOLE_RESIZE 2
	44	#define VIRTIO_CONSOLE_PORT_OPEN 3
	45	#define VIRTIO_CONSOLE_PORT_NAME 4
	46	#define VIRTIO_CONSOLE_PORT_REMOVE 5
eaeff960	47	#define VIRTIO_CONSOLE_DEVICE_READY 6
b99fa815	48
31610434 RR	49	#ifdef __KERNEL__
	50	int __init virtio_cons_early_init(int (put_chars)(u32, const char , int));
	51	#endif /* __KERNEL__ */
	52
	53	#endif /* _LINUX_VIRTIO_CONSOLE_H */