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 19 static 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_realize(vdev, BUS(&ccw_dev->bus), &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 36 static 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 44 static 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 52 static 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 device_class_set_props(dc, virtio_ccw_rng_properties); 59 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 60 } 61 62 static 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 70 static void virtio_ccw_rng_register(void) 71 { 72 type_register_static(&virtio_ccw_rng); 73 } 74 75 type_init(virtio_ccw_rng_register) 76