1 /* 2 * vhost vsock ccw implementation 3 * 4 * This work is licensed under the terms of the GNU GPL, version 2 or (at 5 * your option) any later version. See the COPYING file in the top-level 6 * directory. 7 */ 8 9 #include "qemu/osdep.h" 10 #include "hw/qdev-properties.h" 11 #include "hw/virtio/virtio.h" 12 #include "qapi/error.h" 13 #include "qemu/module.h" 14 #include "virtio-ccw.h" 15 #include "hw/virtio/vhost-vsock.h" 16 17 #define TYPE_VHOST_VSOCK_CCW "vhost-vsock-ccw" 18 OBJECT_DECLARE_SIMPLE_TYPE(VHostVSockCCWState, VHOST_VSOCK_CCW) 19 20 struct VHostVSockCCWState { 21 VirtioCcwDevice parent_obj; 22 VHostVSock vdev; 23 }; 24 25 static Property vhost_vsock_ccw_properties[] = { 26 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 27 VIRTIO_CCW_MAX_REV), 28 DEFINE_PROP_END_OF_LIST(), 29 }; 30 31 static void vhost_vsock_ccw_realize(VirtioCcwDevice *ccw_dev, Error **errp) 32 { 33 VHostVSockCCWState *dev = VHOST_VSOCK_CCW(ccw_dev); 34 DeviceState *vdev = DEVICE(&dev->vdev); 35 36 qdev_realize(vdev, BUS(&ccw_dev->bus), errp); 37 } 38 39 static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data) 40 { 41 DeviceClass *dc = DEVICE_CLASS(klass); 42 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 43 44 k->realize = vhost_vsock_ccw_realize; 45 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 46 device_class_set_props(dc, vhost_vsock_ccw_properties); 47 } 48 49 static void vhost_vsock_ccw_instance_init(Object *obj) 50 { 51 VHostVSockCCWState *dev = VHOST_VSOCK_CCW(obj); 52 VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj); 53 VirtIODevice *virtio_dev; 54 55 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 56 TYPE_VHOST_VSOCK); 57 58 virtio_dev = VIRTIO_DEVICE(&dev->vdev); 59 60 /* 61 * To avoid migration issues, we force virtio version 1 only when 62 * legacy check is enabled in the new machine types (>= 5.1). 63 */ 64 if (!virtio_legacy_check_disabled(virtio_dev)) { 65 ccw_dev->force_revision_1 = true; 66 } 67 } 68 69 static const TypeInfo vhost_vsock_ccw_info = { 70 .name = TYPE_VHOST_VSOCK_CCW, 71 .parent = TYPE_VIRTIO_CCW_DEVICE, 72 .instance_size = sizeof(VHostVSockCCWState), 73 .instance_init = vhost_vsock_ccw_instance_init, 74 .class_init = vhost_vsock_ccw_class_init, 75 }; 76 77 static void vhost_vsock_ccw_register(void) 78 { 79 type_register_static(&vhost_vsock_ccw_info); 80 } 81 82 type_init(vhost_vsock_ccw_register) 83