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
  16 static 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
  22 static 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
  30 static 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
  40 static 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
  60 static 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
  68 static void vhost_vsock_ccw_register(void)
  69 {
  70     type_register_static(&vhost_vsock_ccw_info);
  71 }
  72
  73 type_init(vhost_vsock_ccw_register)