LXR qemu/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
  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    device_class_set_props(dc, 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