1 files changed, 70 insertions, 0 deletions
diff --git a/vhost_user_console.h b/vhost_user_console.h
new file mode 100644
index 0000000..93646c8
--- /dev/null
+++ b/vhost_user_console.h
@@ -0,0 +1,70 @@
+/*
+ *
+ * Copyright (c) 2023 Virtual Open Systems SAS.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version.  See the COPYING file in the
+ * top-level directory.
+ *
+ */
+
+#ifndef VHOST_USER_CONSOLE
+#define VHOST_USER_CONSOLE
+
+#include "virtio_loopback.h"
+#include "vhost_loopback.h"
+#include "vhost_user_loopback.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? */
+
+/* Some events for control messages */
+#define VIRTIO_CONSOLE_DEVICE_READY 0
+#define VIRTIO_CONSOLE_PORT_ADD 1
+#define VIRTIO_CONSOLE_PORT_REMOVE 2
+#define VIRTIO_CONSOLE_PORT_READY 3
+#define VIRTIO_CONSOLE_CONSOLE_PORT 4
+#define VIRTIO_CONSOLE_RESIZE 5
+#define VIRTIO_CONSOLE_PORT_OPEN 6
+#define VIRTIO_CONSOLE_PORT_NAME 7
+
+struct virtio_console_config {
+    /* colums of the screens */
+    __virtio16 cols;
+    /* rows of the screens */
+    __virtio16 rows;
+    /* max. number of ports this device can hold */
+    __virtio32 max_nr_ports;
+    /* emergency write register */
+    __virtio32 emerg_wr;
+};
+
+/*
+ * A message that's passed between the Host and the Guest for a
+ * particular port.
+ */
+struct virtio_console_control {
+    __virtio32 id;       /* Port number */
+    __virtio16 event;    /* The kind of control event (see below) */
+    __virtio16 value;    /* Extra information for the key */
+};
+
+typedef struct VHostUserConsole {
+    VirtIODevice *parent;
+    struct vhost_virtqueue *vhost_vqs;
+    VirtQueue **virtqs;
+    uint16_t num_queues;
+    uint32_t queue_size;
+    struct virtio_console_config config;
+    struct vhost_dev *vhost_dev;
+    VirtQueue *rx_vq;
+    VirtQueue *tx_vq;
+    VirtQueue *ctrl_rx_vq;
+    VirtQueue *ctrl_tx_vq;
+} VHostUserConsole;
+
+void vhost_user_console_realize(void);
+
+#endif /* VHOST_USER_CONSOLE */