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 #include "hw/virtio/virtio-rng.h"
19
20 #define TYPE_VIRTIO_RNG_CCW "virtio-rng-ccw"
21 OBJECT_DECLARE_SIMPLE_TYPE(VirtIORNGCcw, VIRTIO_RNG_CCW)
22
23 struct VirtIORNGCcw {
24 VirtioCcwDevice parent_obj;
25 VirtIORNG vdev;
26 };
27
virtio_ccw_rng_realize(VirtioCcwDevice * ccw_dev,Error ** errp)28 static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp)
29 {
30 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev);
31 DeviceState *vdev = DEVICE(&dev->vdev);
32
33 if (!qdev_realize(vdev, BUS(&ccw_dev->bus), errp)) {
34 return;
35 }
36 }
37
virtio_ccw_rng_instance_init(Object * obj)38 static void virtio_ccw_rng_instance_init(Object *obj)
39 {
40 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
41
42 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
43 TYPE_VIRTIO_RNG);
44 }
45
46 static const Property virtio_ccw_rng_properties[] = {
47 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
48 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
49 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
50 VIRTIO_CCW_MAX_REV),
51 };
52
virtio_ccw_rng_class_init(ObjectClass * klass,const void * data)53 static void virtio_ccw_rng_class_init(ObjectClass *klass, const 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 device_class_set_props(dc, virtio_ccw_rng_properties);
60 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
61 }
62
63 static 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
virtio_ccw_rng_register(void)71 static void virtio_ccw_rng_register(void)
72 {
73 type_register_static(&virtio_ccw_rng);
74 }
75
76 type_init(virtio_ccw_rng_register)
77