hw/s390x/virtio-ccw-balloon.c

   1 /*
   2  * virtio ccw balloon 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
  19 static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp)
  20 {
  21     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev);
  22     DeviceState *vdev = DEVICE(&dev->vdev);
  23
  24     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
  25     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  26 }
  27
  28 static void virtio_ccw_balloon_instance_init(Object *obj)
  29 {
  30     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
  31
  32     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  33                                 TYPE_VIRTIO_BALLOON);
  34     object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
  35                               "guest-stats", &error_abort);
  36     object_property_add_alias(obj, "guest-stats-polling-interval",
  37                               OBJECT(&dev->vdev),
  38                               "guest-stats-polling-interval", &error_abort);
  39 }
  40
  41 static Property virtio_ccw_balloon_properties[] = {
  42     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
  43                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
  44     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
  45                        VIRTIO_CCW_MAX_REV),
  46     DEFINE_PROP_END_OF_LIST(),
  47 };
  48
  49 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data)
  50 {
  51     DeviceClass *dc = DEVICE_CLASS(klass);
  52     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
  53
  54     k->realize = virtio_ccw_balloon_realize;
  55     device_class_set_props(dc, virtio_ccw_balloon_properties);
  56     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  57 }
  58
  59 static const TypeInfo virtio_ccw_balloon = {
  60     .name          = TYPE_VIRTIO_BALLOON_CCW,
  61     .parent        = TYPE_VIRTIO_CCW_DEVICE,
  62     .instance_size = sizeof(VirtIOBalloonCcw),
  63     .instance_init = virtio_ccw_balloon_instance_init,
  64     .class_init    = virtio_ccw_balloon_class_init,
  65 };
  66
  67 static void virtio_ccw_balloon_register(void)
  68 {
  69     type_register_static(&virtio_ccw_balloon);
  70 }
  71
  72 type_init(virtio_ccw_balloon_register)