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 * Copyright (C) Red Hat, Inc., 2009, 2010 11 */ 12 13/* Feature bits */ 14#define VIRTIO_CONSOLE_F_SIZE 0 /* Does host provide console size? */ 15#define VIRTIO_CONSOLE_F_MULTIPORT 1 /* Does host provide multiple ports? */ 16 17#define VIRTIO_CONSOLE_BAD_ID (~(u32)0) 18 19struct virtio_console_config { 20 /* colums of the screens */ 21 __u16 cols; 22 /* rows of the screens */ 23 __u16 rows; 24 /* max. number of ports this device can hold */ 25 __u32 max_nr_ports; 26} __attribute__((packed)); 27 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 */ 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 47 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 */ 53