diff options
| author | Pranavkumar Sawargaonkar <pranavkumar@linaro.org> | 2013-05-20 04:55:38 +0400 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2013-05-20 06:39:03 +0400 |
| commit | 1c6264cc67ac8712d84392fbc9293289011407c0 (patch) | |
| tree | 999a41ce5d955faab99dd16cdd1db1235324fc39 | |
| parent | 8b21ab140ec581caf3340a51cdbe91a76c36d9d8 (diff) | |
| download | linux-1c6264cc67ac8712d84392fbc9293289011407c0.tar.xz | |
virtio: console: Add emergency writeonly register to config space
This patch adds an emerg_wr register (writeonly) in config space
of virtio console device which can be used for debugging.
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Anup Patel <anup.patel@linaro.org>
Acked-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| -rw-r--r-- | include/uapi/linux/virtio_console.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/virtio_console.h b/include/uapi/linux/virtio_console.h index ee13ab6c3614..3fd0dce3cb25 100644 --- a/include/uapi/linux/virtio_console.h +++ b/include/uapi/linux/virtio_console.h @@ -38,6 +38,7 @@ /* Feature bits */ #define VIRTIO_CONSOLE_F_SIZE 0 /* Does host provide console size? */ #define VIRTIO_CONSOLE_F_MULTIPORT 1 /* Does host provide multiple ports? */ +#define VIRTIO_CONSOLE_F_EMERG_WRITE 2 /* Does host support emergency write? */ #define VIRTIO_CONSOLE_BAD_ID (~(u32)0) @@ -48,6 +49,8 @@ struct virtio_console_config { __u16 rows; /* max. number of ports this device can hold */ __u32 max_nr_ports; + /* emergency write register */ + __u32 emerg_wr; } __attribute__((packed)); /* |