linux-stable/include/linux/virtio_console.h

#ifndef _LINUX_VIRTIO_CONSOLE_H
#define _LINUX_VIRTIO_CONSOLE_H
#include <linux/virtio_config.h>

/* The ID for virtio console */
#define VIRTIO_ID_CONSOLE	3

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

#endif /* _LINUX_VIRTIO_CONSOLE_H */
Virtio console driver This is an hvc-based virtio console driver. It's suboptimal becuase hvc expects to have raw access to interrupts and virtio doesn't assume that, so it currently polls. There are two solutions: expose hvc's "kick" interface, or wean off hvc. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2007-10-22 11:03:39 +10:00			`#ifndef _LINUX_VIRTIO_CONSOLE_H`
			`#define _LINUX_VIRTIO_CONSOLE_H`
			`#include <linux/virtio_config.h>`

			`/* The ID for virtio console */`
			`#define VIRTIO_ID_CONSOLE 3`

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

			`#endif /* _LINUX_VIRTIO_CONSOLE_H */`