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| author | Rusty Russell <rusty@rustcorp.com.au> | 2007-10-22 11:03:39 +1000 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2007-10-23 15:49:55 +1000 |
| commit | 31610434bc3523c0b01a10917a1185096a03c4c8 (patch) | |
| tree | 4b349e73a16e5ba997e0b80adec04f6bc0139163 /include/linux/virtio_console.h | |
| parent | e467cde238184d1b0923db2cd61ae1c5a6dc15aa (diff) | |
| download | lwn-31610434bc3523c0b01a10917a1185096a03c4c8.tar.gz lwn-31610434bc3523c0b01a10917a1185096a03c4c8.zip | |
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>
Diffstat (limited to 'include/linux/virtio_console.h')
| -rw-r--r-- | include/linux/virtio_console.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/virtio_console.h b/include/linux/virtio_console.h new file mode 100644 index 000000000000..ed2d4ead7eb7 --- /dev/null +++ b/include/linux/virtio_console.h @@ -0,0 +1,12 @@ +#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 */ |