diff options
Diffstat (limited to 'hw/virtio/vhost-user-rng.c')
-rw-r--r-- | hw/virtio/vhost-user-rng.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/hw/virtio/vhost-user-rng.c b/hw/virtio/vhost-user-rng.c new file mode 100644 index 0000000000..01879c863d --- /dev/null +++ b/hw/virtio/vhost-user-rng.c @@ -0,0 +1,66 @@ +/* + * 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 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) |