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