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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2008-11-25 13:36:26 +0100 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-30 09:26:10 +1030 |
| commit | c29834584ea4eafccf2f62a0b8a32e64f792044c (patch) | |
| tree | 296533011a14c83ad20e02c89dc391f93cf12fcd /include/linux/virtio_console.h | |
| parent | 29f9f12ec737af62835124e4a8bdb9de631f04dd (diff) | |
| download | lwn-c29834584ea4eafccf2f62a0b8a32e64f792044c.tar.gz lwn-c29834584ea4eafccf2f62a0b8a32e64f792044c.zip | |
virtio_console: support console resizing
this patch uses the new hvc callback hvc_resize to set the window size
which allows to change the tty size of hvc_console via a hvc_resize
function.
I have added a new feature bit VIRTIO_CONSOLE_F_SIZE. The driver will
change the window size on tty open and via the config_changed callback
of the transport. Currently lguest and kvm_s390 have not implemented this
callback, but the callback can be implemented at a later point in time.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
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 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/virtio_console.h b/include/linux/virtio_console.h index 19a0da0dba41..7615ffcdd555 100644 --- a/include/linux/virtio_console.h +++ b/include/linux/virtio_console.h @@ -7,6 +7,17 @@ /* The ID for virtio console */ #define VIRTIO_ID_CONSOLE 3 +/* Feature bits */ +#define VIRTIO_CONSOLE_F_SIZE 0 /* Does host provide console size? */ + +struct virtio_console_config { + /* colums of the screens */ + __u16 cols; + /* rows of the screens */ + __u16 rows; +} __attribute__((packed)); + + #ifdef __KERNEL__ int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int)); #endif /* __KERNEL__ */ |