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Virtio console driver

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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>
This commit is contained in:
Rusty Russell 2007-10-22 11:03:39 +10:00
parent e467cde238
commit 31610434bc
4 changed files with 242 additions and 0 deletions
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12
include/linux/virtio_console.h Normal file
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#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 */