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/*
* Vhost-user RNG virtio device
*
* Copyright (c) 2021 Mathieu Poirier <mathieu.poirier@linaro.org>
*
* Simple wrapper of the generic vhost-user-device.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/qdev-properties.h"
#include "hw/virtio/virtio-bus.h"
#include "hw/virtio/vhost-user-rng.h"
#include "standard-headers/linux/virtio_ids.h"
static const VMStateDescription vu_rng_vmstate = {
.name = "vhost-user-rng",
.unmigratable = 1,
};
static const Property vrng_properties[] = {
DEFINE_PROP_CHR("chardev", VHostUserBase, chardev),
DEFINE_PROP_END_OF_LIST(),
};
static void vu_rng_base_realize(DeviceState *dev, Error **errp)
{
VHostUserBase *vub = VHOST_USER_BASE(dev);
VHostUserBaseClass *vubs = VHOST_USER_BASE_GET_CLASS(dev);
/* Fixed for RNG */
vub->virtio_id = VIRTIO_ID_RNG;
vub->num_vqs = 1;
vub->vq_size = 4;
vubs->parent_realize(dev, errp);
}
static void vu_rng_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass);
dc->vmsd = &vu_rng_vmstate;
device_class_set_props(dc, vrng_properties);
device_class_set_parent_realize(dc, vu_rng_base_realize,
&vubc->parent_realize);
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
}
static const TypeInfo vu_rng_info = {
.name = TYPE_VHOST_USER_RNG,
.parent = TYPE_VHOST_USER_BASE,
.instance_size = sizeof(VHostUserRNG),
.class_init = vu_rng_class_init,
};
static void vu_rng_register_types(void)
{
type_register_static(&vu_rng_info);
}
type_init(vu_rng_register_types)
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