From c29834584ea4eafccf2f62a0b8a32e64f792044c Mon Sep 17 00:00:00 2001
From: Christian Borntraeger <borntraeger@de.ibm.com>
Date: Tue, 25 Nov 2008 13:36:26 +0100
Subject: 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>
---
include/linux/virtio_console.h | 11 +++++++++++
1 file changed, 11 insertions(+)
(limited to 'include/linux/virtio_console.h')
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__ */
--
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