1 files changed, 23 insertions, 0 deletions

diff --git a/include/linux/virtio_console.h b/include/linux/virtio_console.h
index 92228a8fbcbc..ae4f039515b4 100644
--- a/include/linux/virtio_console.h
+++ b/include/linux/virtio_console.h
@@ -12,14 +12,37 @@
 
 /* Feature bits */
 #define VIRTIO_CONSOLE_F_SIZE   0       /* Does host provide console size? */
+#define VIRTIO_CONSOLE_F_MULTIPORT 1    /* Does host provide multiple ports? */
 
 struct virtio_console_config {
         /* colums of the screens */
         __u16 cols;
         /* rows of the screens */
         __u16 rows;
+        /* max. number of ports this device can hold */
+        __u32 max_nr_ports;
+        /* number of ports added so far */
+        __u32 nr_ports;
 } __attribute__((packed));
 
+/*
+ * A message that's passed between the Host and the Guest for a
+ * 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 */
+};
+
+/* Some events for control messages */
+#define VIRTIO_CONSOLE_PORT_READY       0
+#define VIRTIO_CONSOLE_CONSOLE_PORT     1
+#define VIRTIO_CONSOLE_RESIZE           2
+#define VIRTIO_CONSOLE_PORT_OPEN        3
+#define VIRTIO_CONSOLE_PORT_NAME        4
+#define VIRTIO_CONSOLE_PORT_REMOVE      5
+
 #ifdef __KERNEL__
 int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int));
 #endif /* __KERNEL__ */