1 /*
2 * vhost vsock ccw implementation
3 *
4 * This work is licensed under the terms of the GNU GPL, version 2 or (at
5 * your option) any later version. See the COPYING file in the top-level
6 * directory.
7 */
8
9 #include "qemu/osdep.h"
10 #include "hw/qdev-properties.h"
11 #include "hw/virtio/virtio.h"
12 #include "qapi/error.h"
13 #include "qemu/module.h"
14 #include "virtio-ccw.h"
15 #include "hw/virtio/vhost-vsock.h"
16
17 #define TYPE_VHOST_VSOCK_CCW "vhost-vsock-ccw"
18 OBJECT_DECLARE_SIMPLE_TYPE(VHostVSockCCWState, VHOST_VSOCK_CCW)
19
20 struct VHostVSockCCWState {
21 VirtioCcwDevice parent_obj;
22 VHostVSock vdev;
23 };
24
25 static Property vhost_vsock_ccw_properties[] = {
26 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
27 VIRTIO_CCW_MAX_REV),
28 DEFINE_PROP_END_OF_LIST(),
29 };
30
vhost_vsock_ccw_realize(VirtioCcwDevice * ccw_dev,Error ** errp)31 static void vhost_vsock_ccw_realize(VirtioCcwDevice *ccw_dev, Error **errp)
32 {
33 VHostVSockCCWState *dev = VHOST_VSOCK_CCW(ccw_dev);
34 DeviceState *vdev = DEVICE(&dev->vdev);
35
36 qdev_realize(vdev, BUS(&ccw_dev->bus), errp);
37 }
38
vhost_vsock_ccw_class_init(ObjectClass * klass,void * data)39 static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data)
40 {
41 DeviceClass *dc = DEVICE_CLASS(klass);
42 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
43
44 k->realize = vhost_vsock_ccw_realize;
45 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
46 device_class_set_props(dc, vhost_vsock_ccw_properties);
47 }
48
vhost_vsock_ccw_instance_init(Object * obj)49 static void vhost_vsock_ccw_instance_init(Object *obj)
50 {
51 VHostVSockCCWState *dev = VHOST_VSOCK_CCW(obj);
52 VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
53 VirtIODevice *virtio_dev;
54
55 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
56 TYPE_VHOST_VSOCK);
57
58 virtio_dev = VIRTIO_DEVICE(&dev->vdev);
59
60 /*
61 * To avoid migration issues, we force virtio version 1 only when
62 * legacy check is enabled in the new machine types (>= 5.1).
63 */
64 if (!virtio_legacy_check_disabled(virtio_dev)) {
65 ccw_dev->force_revision_1 = true;
66 }
67 }
68
69 static const TypeInfo vhost_vsock_ccw_info = {
70 .name = TYPE_VHOST_VSOCK_CCW,
71 .parent = TYPE_VIRTIO_CCW_DEVICE,
72 .instance_size = sizeof(VHostVSockCCWState),
73 .instance_init = vhost_vsock_ccw_instance_init,
74 .class_init = vhost_vsock_ccw_class_init,
75 };
76
vhost_vsock_ccw_register(void)77 static void vhost_vsock_ccw_register(void)
78 {
79 type_register_static(&vhost_vsock_ccw_info);
80 }
81
82 type_init(vhost_vsock_ccw_register)
83