LXR qemu/hw/virtio/virtio-balloon-pci.c

   1/*
   2 * Virtio balloon PCI Bindings
   3 *
   4 * Copyright IBM, Corp. 2007
   5 * Copyright (c) 2009 CodeSourcery
   6 *
   7 * Authors:
   8 *  Anthony Liguori   <aliguori@us.ibm.com>
   9 *  Paul Brook        <paul@codesourcery.com>
  10 *
  11 * Contributions after 2012-01-13 are licensed under the terms of the
  12 * GNU GPL, version 2 or (at your option) any later version.
  13 */
  14
  15#include "qemu/osdep.h"
  16
  17#include "virtio-pci.h"
  18#include "hw/qdev-properties.h"
  19#include "hw/virtio/virtio-balloon.h"
  20#include "qapi/error.h"
  21#include "qemu/module.h"
  22
  23typedef struct VirtIOBalloonPCI VirtIOBalloonPCI;
  24
  25/*
  26 * virtio-balloon-pci: This extends VirtioPCIProxy.
  27 */
  28#define TYPE_VIRTIO_BALLOON_PCI "virtio-balloon-pci-base"
  29#define VIRTIO_BALLOON_PCI(obj) \
  30        OBJECT_CHECK(VirtIOBalloonPCI, (obj), TYPE_VIRTIO_BALLOON_PCI)
  31
  32struct VirtIOBalloonPCI {
  33    VirtIOPCIProxy parent_obj;
  34    VirtIOBalloon vdev;
  35};
  36static Property virtio_balloon_pci_properties[] = {
  37    DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
  38    DEFINE_PROP_END_OF_LIST(),
  39};
  40
  41static void virtio_balloon_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  42{
  43    VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev);
  44    DeviceState *vdev = DEVICE(&dev->vdev);
  45
  46    if (vpci_dev->class_code != PCI_CLASS_OTHERS &&
  47        vpci_dev->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */
  48        vpci_dev->class_code = PCI_CLASS_OTHERS;
  49    }
  50
  51    qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
  52    object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  53}
  54
  55static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data)
  56{
  57    DeviceClass *dc = DEVICE_CLASS(klass);
  58    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  59    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  60    k->realize = virtio_balloon_pci_realize;
  61    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  62    dc->props = virtio_balloon_pci_properties;
  63    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  64    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON;
  65    pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
  66    pcidev_k->class_id = PCI_CLASS_OTHERS;
  67}
  68
  69static void virtio_balloon_pci_instance_init(Object *obj)
  70{
  71    VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj);
  72
  73    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  74                                TYPE_VIRTIO_BALLOON);
  75    object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
  76                                  "guest-stats", &error_abort);
  77    object_property_add_alias(obj, "guest-stats-polling-interval",
  78                              OBJECT(&dev->vdev),
  79                              "guest-stats-polling-interval", &error_abort);
  80}
  81
  82static const VirtioPCIDeviceTypeInfo virtio_balloon_pci_info = {
  83    .base_name             = TYPE_VIRTIO_BALLOON_PCI,
  84    .generic_name          = "virtio-balloon-pci",
  85    .transitional_name     = "virtio-balloon-pci-transitional",
  86    .non_transitional_name = "virtio-balloon-pci-non-transitional",
  87    .instance_size = sizeof(VirtIOBalloonPCI),
  88    .instance_init = virtio_balloon_pci_instance_init,
  89    .class_init    = virtio_balloon_pci_class_init,
  90};
  91
  92static void virtio_balloon_pci_register(void)
  93{
  94    virtio_pci_types_register(&virtio_balloon_pci_info);
  95}
  96
  97type_init(virtio_balloon_pci_register)
  98