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/virtio/virtio.h"
  14#include "qapi/error.h"
  15#include "qemu/module.h"
  16#include "virtio-ccw.h"
  17
  18static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp)
  19{
  20    VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev);
  21    DeviceState *vdev = DEVICE(&dev->vdev);
  22    Error *err = NULL;
  23
  24    qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
  25    object_property_set_bool(OBJECT(vdev), true, "realized", &err);
  26    if (err) {
  27        error_propagate(errp, err);
  28        return;
  29    }
  30
  31    object_property_set_link(OBJECT(dev),
  32                             OBJECT(dev->vdev.conf.rng), "rng",
  33                             NULL);
  34}
  35
  36static void virtio_ccw_rng_instance_init(Object *obj)
  37{
  38    VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
  39
  40    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  41                                TYPE_VIRTIO_RNG);
  42}
  43
  44static Property virtio_ccw_rng_properties[] = {
  45    DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
  46                    VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
  47    DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
  48                       VIRTIO_CCW_MAX_REV),
  49    DEFINE_PROP_END_OF_LIST(),
  50};
  51
  52static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)
  53{
  54    DeviceClass *dc = DEVICE_CLASS(klass);
  55    VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
  56
  57    k->realize = virtio_ccw_rng_realize;
  58    dc->props = virtio_ccw_rng_properties;
  59    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  60}
  61
  62static const TypeInfo virtio_ccw_rng = {
  63    .name          = TYPE_VIRTIO_RNG_CCW,
  64    .parent        = TYPE_VIRTIO_CCW_DEVICE,
  65    .instance_size = sizeof(VirtIORNGCcw),
  66    .instance_init = virtio_ccw_rng_instance_init,
  67    .class_init    = virtio_ccw_rng_class_init,
  68};
  69
  70static void virtio_ccw_rng_register(void)
  71{
  72    type_register_static(&virtio_ccw_rng);
  73}
  74
  75type_init(virtio_ccw_rng_register)
  76