LXR qemu/hw/s390x/vhost-vsock-ccw.c

   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
  16static Property vhost_vsock_ccw_properties[] = {
  17    DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
  18                       VIRTIO_CCW_MAX_REV),
  19    DEFINE_PROP_END_OF_LIST(),
  20};
  21
  22static void vhost_vsock_ccw_realize(VirtioCcwDevice *ccw_dev, Error **errp)
  23{
  24    VHostVSockCCWState *dev = VHOST_VSOCK_CCW(ccw_dev);
  25    DeviceState *vdev = DEVICE(&dev->vdev);
  26
  27    qdev_realize(vdev, BUS(&ccw_dev->bus), errp);
  28}
  29
  30static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data)
  31{
  32    DeviceClass *dc = DEVICE_CLASS(klass);
  33    VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
  34
  35    k->realize = vhost_vsock_ccw_realize;
  36    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  37    device_class_set_props(dc, vhost_vsock_ccw_properties);
  38}
  39
  40static void vhost_vsock_ccw_instance_init(Object *obj)
  41{
  42    VHostVSockCCWState *dev = VHOST_VSOCK_CCW(obj);
  43    VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
  44    VirtIODevice *virtio_dev;
  45
  46    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  47                                TYPE_VHOST_VSOCK);
  48
  49    virtio_dev = VIRTIO_DEVICE(&dev->vdev);
  50
  51    /*
  52     * To avoid migration issues, we force virtio version 1 only when
  53     * legacy check is enabled in the new machine types (>= 5.1).
  54     */
  55    if (!virtio_legacy_check_disabled(virtio_dev)) {
  56        ccw_dev->force_revision_1 = true;
  57    }
  58}
  59
  60static const TypeInfo vhost_vsock_ccw_info = {
  61    .name          = TYPE_VHOST_VSOCK_CCW,
  62    .parent        = TYPE_VIRTIO_CCW_DEVICE,
  63    .instance_size = sizeof(VHostVSockCCWState),
  64    .instance_init = vhost_vsock_ccw_instance_init,
  65    .class_init    = vhost_vsock_ccw_class_init,
  66};
  67
  68static void vhost_vsock_ccw_register(void)
  69{
  70    type_register_static(&vhost_vsock_ccw_info);
  71}
  72
  73type_init(vhost_vsock_ccw_register)
  74