[Qemu-devel] [RFC 6/9] hw/virtio-balloon.c: Add virtio-balloon device.

[Evgeny Voevodin]

Signed-off-by: Evgeny Voevodin <address@hidden>
---
 hw/virtio-balloon.c |   34 ++++++++++++++++++++++++++++++++++
 hw/virtio-balloon.h |    7 +++++++
 2 files changed, 41 insertions(+), 0 deletions(-)

diff --git a/hw/virtio-balloon.c b/hw/virtio-balloon.c
index ce9d2c9..5640e58 100644
--- a/hw/virtio-balloon.c
+++ b/hw/virtio-balloon.c
@@ -20,6 +20,7 @@
 #include "cpu.h"
 #include "balloon.h"
 #include "virtio-balloon.h"
+#include "virtio-transport.h"
 #include "kvm.h"
 #include "exec-memory.h"
 
@@ -263,3 +264,36 @@ void virtio_balloon_exit(VirtIODevice *vdev)
     unregister_savevm(s->qdev, "virtio-balloon", s);
     virtio_cleanup(vdev);
 }
+
+/******************** VirtIOBaloon Device **********************/
+
+static int virtio_balloondev_init(DeviceState *dev)
+{
+    VirtIODevice *vdev;
+    vdev = virtio_balloon_init(dev);
+    if (!vdev) {
+        return -1;
+    }
+    return virtio_init_transport(dev, vdev);
+}
+
+static void virtio_balloon_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    dc->init = virtio_balloondev_init;
+    dc->bus_info = &virtio_transport_bus_info;
+}
+
+static TypeInfo virtio_balloon_info = {
+    .name = "virtio-balloon",
+    .parent = TYPE_DEVICE,
+    .instance_size = sizeof(VirtIOBaloonState),
+    .class_init = virtio_balloon_class_init,
+};
+
+static void virtio_baloon_register_types(void)
+{
+    type_register_static(&virtio_balloon_info);
+}
+
+type_init(virtio_baloon_register_types)
diff --git a/hw/virtio-balloon.h b/hw/virtio-balloon.h
index 73300dd..e134226 100644
--- a/hw/virtio-balloon.h
+++ b/hw/virtio-balloon.h
@@ -15,6 +15,7 @@
 #ifndef _QEMU_VIRTIO_BALLOON_H
 #define _QEMU_VIRTIO_BALLOON_H
 
+#include "sysbus.h"
 #include "virtio.h"
 #include "pci.h"
 
@@ -52,4 +53,10 @@ typedef struct VirtIOBalloonStat {
     uint64_t val;
 } QEMU_PACKED VirtIOBalloonStat;
 
+typedef struct {
+    DeviceState qdev;
+} VirtIOBaloonState;
+
+#define VIRTIO_BALLOON_FROM_QDEV(dev) DO_UPCAST(VirtIOBaloonState, qdev, dev)
+
 #endif
-- 
1.7.5.4