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virtio-ccw-balloon.c (2565B)

      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)