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 #include "hw/virtio/virtio-balloon.h"
  19
  20 #define TYPE_VIRTIO_BALLOON_CCW "virtio-balloon-ccw"
  21 OBJECT_DECLARE_SIMPLE_TYPE(VirtIOBalloonCcw, VIRTIO_BALLOON_CCW)
  22
  23 struct VirtIOBalloonCcw {
  24     VirtioCcwDevice parent_obj;
  25     VirtIOBalloon vdev;
  26 };
  27
  28 static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp)
  29 {
  30     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev);
  31     DeviceState *vdev = DEVICE(&dev->vdev);
  32
  33     qdev_realize(vdev, BUS(&ccw_dev->bus), errp);
  34 }
  35
  36 static void virtio_ccw_balloon_instance_init(Object *obj)
  37 {
  38     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
  39
  40     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  41                                 TYPE_VIRTIO_BALLOON);
  42     object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
  43                               "guest-stats");
  44     object_property_add_alias(obj, "guest-stats-polling-interval",
  45                               OBJECT(&dev->vdev),
  46                               "guest-stats-polling-interval");
  47 }
  48
  49 static Property virtio_ccw_balloon_properties[] = {
  50     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
  51                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
  52     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
  53                        VIRTIO_CCW_MAX_REV),
  54     DEFINE_PROP_END_OF_LIST(),
  55 };
  56
  57 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data)
  58 {
  59     DeviceClass *dc = DEVICE_CLASS(klass);
  60     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
  61
  62     k->realize = virtio_ccw_balloon_realize;
  63     device_class_set_props(dc, virtio_ccw_balloon_properties);
  64     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  65 }
  66
  67 static const TypeInfo virtio_ccw_balloon = {
  68     .name          = TYPE_VIRTIO_BALLOON_CCW,
  69     .parent        = TYPE_VIRTIO_CCW_DEVICE,
  70     .instance_size = sizeof(VirtIOBalloonCcw),
  71     .instance_init = virtio_ccw_balloon_instance_init,
  72     .class_init    = virtio_ccw_balloon_class_init,
  73 };
  74
  75 static void virtio_ccw_balloon_register(void)
  76 {
  77     type_register_static(&virtio_ccw_balloon);
  78 }
  79
  80 type_init(virtio_ccw_balloon_register)