sd: Use ERRP_GUARD()
[qemu.git] / hw / s390x / virtio-ccw-rng.c
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
19 static 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
24 if (!qdev_realize(vdev, BUS(&ccw_dev->bus), errp)) {
25 return;
26 }
27
28 object_property_set_link(OBJECT(dev), "rng", OBJECT(dev->vdev.conf.rng),
29 NULL);
30 }
31
32 static void virtio_ccw_rng_instance_init(Object *obj)
33 {
34 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
35
36 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
37 TYPE_VIRTIO_RNG);
38 }
39
40 static Property virtio_ccw_rng_properties[] = {
41 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
42 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
43 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
44 VIRTIO_CCW_MAX_REV),
45 DEFINE_PROP_END_OF_LIST(),
46 };
47
48 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)
49 {
50 DeviceClass *dc = DEVICE_CLASS(klass);
51 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
52
53 k->realize = virtio_ccw_rng_realize;
54 device_class_set_props(dc, virtio_ccw_rng_properties);
55 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
56 }
57
58 static const TypeInfo virtio_ccw_rng = {
59 .name = TYPE_VIRTIO_RNG_CCW,
60 .parent = TYPE_VIRTIO_CCW_DEVICE,
61 .instance_size = sizeof(VirtIORNGCcw),
62 .instance_init = virtio_ccw_rng_instance_init,
63 .class_init = virtio_ccw_rng_class_init,
64 };
65
66 static void virtio_ccw_rng_register(void)
67 {
68 type_register_static(&virtio_ccw_rng);
69 }
70
71 type_init(virtio_ccw_rng_register)