Commit 2362ecc5 authored by Cornelia Huck's avatar Cornelia Huck
Browse files

virtio-ccw: Wire up virtio-rng. 



Make virtio-rng devices available for s390-ccw-virtio machines.

Signed-off-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
parent b8a205f2

hw/s390x/virtio-ccw.c

+60 −0
Original line number Diff line number Diff line
@@ -642,6 +642,30 @@ static int virtio_ccw_scsi_exit(VirtioCcwDevice *dev) 
    return virtio_ccw_exit(dev);

}



static int virtio_ccw_rng_init(VirtioCcwDevice *dev)

{

    VirtIODevice *vdev;



    if (dev->rng.rng == NULL) {

        dev->rng.default_backend = RNG_RANDOM(object_new(TYPE_RNG_RANDOM));

        object_property_add_child(OBJECT(dev), "default-backend",

                                  OBJECT(dev->rng.default_backend), NULL);

        object_property_set_link(OBJECT(dev), OBJECT(dev->rng.default_backend),

                                 "rng", NULL);

    }

    vdev = virtio_rng_init((DeviceState *)dev, &dev->rng);

    if (!vdev) {

        return -1;

    }

    return virtio_ccw_device_init(dev, vdev);

}



static int virtio_ccw_rng_exit(VirtioCcwDevice *dev)

{

    virtio_rng_exit(dev->vdev);

    return virtio_ccw_exit(dev);

}



/* DeviceState to VirtioCcwDevice. Note: used on datapath,

 * be careful and test performance if you change this.

 */
@@ -831,6 +855,41 @@ static const TypeInfo virtio_ccw_scsi = { 
    .class_init    = virtio_ccw_scsi_class_init,

};



static void virtio_ccw_rng_initfn(Object *obj)

{

    VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(obj);



    object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,

                             (Object **)&dev->rng.rng, NULL);

}



static Property virtio_ccw_rng_properties[] = {

    DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),

    DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),

    DEFINE_PROP_UINT64("max-bytes", VirtioCcwDevice, rng.max_bytes, INT64_MAX),

    DEFINE_PROP_UINT32("period", VirtioCcwDevice, rng.period_ms, 1 << 16),

    DEFINE_PROP_END_OF_LIST(),

};



static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)

{

    DeviceClass *dc = DEVICE_CLASS(klass);

    VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);



    k->init = virtio_ccw_rng_init;

    k->exit = virtio_ccw_rng_exit;

    dc->reset = virtio_ccw_reset;

    dc->props = virtio_ccw_rng_properties;

}



static const TypeInfo virtio_ccw_rng = {

    .name          = "virtio-rng-ccw",

    .parent        = TYPE_VIRTIO_CCW_DEVICE,

    .instance_size = sizeof(VirtioCcwDevice),

    .instance_init = virtio_ccw_rng_initfn,

    .class_init    = virtio_ccw_rng_class_init,

};



static int virtio_ccw_busdev_init(DeviceState *dev)

{

    VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
@@ -953,6 +1012,7 @@ static void virtio_ccw_register(void) 
    type_register_static(&virtio_ccw_net);

    type_register_static(&virtio_ccw_balloon);

    type_register_static(&virtio_ccw_scsi);

    type_register_static(&virtio_ccw_rng);

    type_register_static(&virtual_css_bridge_info);

}

hw/s390x/virtio-ccw.h

+2 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <hw/virtio-net.h>

#include <hw/virtio-serial.h>

#include <hw/virtio-scsi.h>

#include <hw/virtio-rng.h>

#include <hw/virtio-bus.h>



#define VIRTUAL_CSSID 0xfe
@@ -77,6 +78,7 @@ struct VirtioCcwDevice { 
    virtio_serial_conf serial;

    virtio_net_conf net;

    VirtIOSCSIConf scsi;

    VirtIORNGConf rng;

    VirtioBusState bus;

    /* Guest provided values: */

    hwaddr indicators;