--- zzzz-none-000/linux-3.10.107/include/uapi/linux/virtio_console.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/uapi/linux/virtio_console.h	2021-02-04 17:41:59.000000000 +0000
@@ -32,12 +32,14 @@
 #ifndef _UAPI_LINUX_VIRTIO_CONSOLE_H
 #define _UAPI_LINUX_VIRTIO_CONSOLE_H
 #include <linux/types.h>
+#include <linux/virtio_types.h>
 #include <linux/virtio_ids.h>
 #include <linux/virtio_config.h>
 
 /* 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 +50,8 @@
 	__u16 rows;
 	/* max. number of ports this device can hold */
 	__u32 max_nr_ports;
+	/* emergency write register */
+	__u32 emerg_wr;
 } __attribute__((packed));
 
 /*
@@ -55,9 +59,9 @@
  * particular port.
  */
 struct virtio_console_control {
-	__u32 id;		/* Port number */
-	__u16 event;		/* The kind of control event (see below) */
-	__u16 value;		/* Extra information for the key */
+	__virtio32 id;		/* Port number */
+	__virtio16 event;	/* The kind of control event (see below) */
+	__virtio16 value;	/* Extra information for the key */
 };
 
 /* Some events for control messages */