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 #include "hw/virtio/virtio-rng.h" 19 20 #define TYPE_VIRTIO_RNG_CCW "virtio-rng-ccw" 21 OBJECT_DECLARE_SIMPLE_TYPE(VirtIORNGCcw, VIRTIO_RNG_CCW) 22 23 struct VirtIORNGCcw { 24 VirtioCcwDevice parent_obj; 25 VirtIORNG vdev; 26 }; 27 28 static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp) 29 { 30 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); 31 DeviceState *vdev = DEVICE(&dev->vdev); 32 33 if (!qdev_realize(vdev, BUS(&ccw_dev->bus), errp)) { 34 return; 35 } 36 } 37 38 static void virtio_ccw_rng_instance_init(Object *obj) 39 { 40 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj); 41 42 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 43 TYPE_VIRTIO_RNG); 44 } 45 46 static const Property virtio_ccw_rng_properties[] = { 47 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 48 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 49 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 50 VIRTIO_CCW_MAX_REV), 51 }; 52 53 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data) 54 { 55 DeviceClass *dc = DEVICE_CLASS(klass); 56 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 57 58 k->realize = virtio_ccw_rng_realize; 59 device_class_set_props(dc, virtio_ccw_rng_properties); 60 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 61 } 62 63 static const TypeInfo virtio_ccw_rng = { 64 .name = TYPE_VIRTIO_RNG_CCW, 65 .parent = TYPE_VIRTIO_CCW_DEVICE, 66 .instance_size = sizeof(VirtIORNGCcw), 67 .instance_init = virtio_ccw_rng_instance_init, 68 .class_init = virtio_ccw_rng_class_init, 69 }; 70 71 static void virtio_ccw_rng_register(void) 72 { 73 type_register_static(&virtio_ccw_rng); 74 } 75 76 type_init(virtio_ccw_rng_register) 77