1/*
2 * virtio ccw random number generator implementation
3 *
4 * Copyright 2012, 2015 IBM Corp.
5 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
6 *
7 * This work is licensed under the terms of the GNU GPL, version 2 or (at
8 * your option) any later version. See the COPYING file in the top-level
9 * directory.
10 */
11
12#include "qemu/osdep.h"
13#include "hw/qdev-properties.h"
14#include "hw/virtio/virtio.h"
15#include "qapi/error.h"
16#include "qemu/module.h"
17#include "virtio-ccw.h"
18
19static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp)
20{
21 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev);
22 DeviceState *vdev = DEVICE(&dev->vdev);
23 Error *err = NULL;
24
25 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
26 object_property_set_bool(OBJECT(vdev), true, "realized", &err);
27 if (err) {
28 error_propagate(errp, err);
29 return;
30 }
31
32 object_property_set_link(OBJECT(dev),
33 OBJECT(dev->vdev.conf.rng), "rng",
34 NULL);
35}
36
37static void virtio_ccw_rng_instance_init(Object *obj)
38{
39 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
40
41 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
42 TYPE_VIRTIO_RNG);
43}
44
45static Property virtio_ccw_rng_properties[] = {
46 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
47 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
48 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
49 VIRTIO_CCW_MAX_REV),
50 DEFINE_PROP_END_OF_LIST(),
51};
52
53static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)
54{
55 DeviceClass *dc = DEVICE_CLASS(klass);
56 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
57
58 k->realize = virtio_ccw_rng_realize;
59 dc->props = virtio_ccw_rng_properties;
60 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
61}
62
63static const TypeInfo virtio_ccw_rng = {
64 .name = TYPE_VIRTIO_RNG_CCW,
65 .parent = TYPE_VIRTIO_CCW_DEVICE,
66 .instance_size = sizeof(VirtIORNGCcw),
67 .instance_init = virtio_ccw_rng_instance_init,
68 .class_init = virtio_ccw_rng_class_init,
69};
70
71static void virtio_ccw_rng_register(void)
72{
73 type_register_static(&virtio_ccw_rng);
74}
75
76type_init(virtio_ccw_rng_register)
77