virtio-input: emulated devices [device]

This patch adds the virtio-input-hid base class and
virtio-{keyboard,mouse,tablet} subclasses building on the base class.
They are hooked up to the qemu input core and deliver input events
to the guest like all other hid devices (ps/2 kbd, usb tablet, ...).

Using them is as simple as adding "-device virtio-tablet-device" to
your command line, for use all transports except pci.  virtio-pci
support comes as separate patch, once virtio-pci got virtio 1.0
support.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/include/hw/virtio/virtio-input.h b/include/hw/virtio/virtio-input.h
index ad915cc7c1..a265519e1e 100644
--- a/include/hw/virtio/virtio-input.h
+++ b/include/hw/virtio/virtio-input.h
@@ -34,9 +34,23 @@ typedef struct virtio_input_event virtio_input_event;
 #define VIRTIO_INPUT_CLASS(klass) \
         OBJECT_CLASS_CHECK(VirtIOInputClass, klass, TYPE_VIRTIO_INPUT)
 
+#define TYPE_VIRTIO_INPUT_HID "virtio-input-hid"
+#define TYPE_VIRTIO_KEYBOARD  "virtio-keyboard"
+#define TYPE_VIRTIO_MOUSE     "virtio-mouse"
+#define TYPE_VIRTIO_TABLET    "virtio-tablet"
+
+#define VIRTIO_INPUT_HID(obj) \
+        OBJECT_CHECK(VirtIOInputHID, (obj), TYPE_VIRTIO_INPUT_HID)
+#define VIRTIO_INPUT_HID_GET_PARENT_CLASS(obj) \
+        OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT_HID)
+
+#define DEFINE_VIRTIO_INPUT_PROPERTIES(_state, _field)       \
+        DEFINE_PROP_STRING("serial", _state, _field.serial)
+
 typedef struct VirtIOInput VirtIOInput;
 typedef struct VirtIOInputClass VirtIOInputClass;
 typedef struct VirtIOInputConfig VirtIOInputConfig;
+typedef struct VirtIOInputHID VirtIOInputHID;
 
 struct virtio_input_conf {
     char *serial;
@@ -73,6 +87,13 @@ struct VirtIOInputClass {
     void (*handle_status)(VirtIOInput *vinput, virtio_input_event *event);
 };
 
+struct VirtIOInputHID {
+    VirtIOInput                       parent_obj;
+    QemuInputHandler                  *handler;
+    QemuInputHandlerState             *hs;
+    int                               ledstate;
+};
+
 void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event);
 void virtio_input_init_config(VirtIOInput *vinput,
                               virtio_input_config *config);