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 #include "qom/object.h"
  23
  24 typedef struct VirtIOBalloonPCI VirtIOBalloonPCI;
  25
  26 /*
  27  * virtio-balloon-pci: This extends VirtioPCIProxy.
  28  */
  29 #define TYPE_VIRTIO_BALLOON_PCI "virtio-balloon-pci-base"
  30 DECLARE_INSTANCE_CHECKER(VirtIOBalloonPCI, VIRTIO_BALLOON_PCI,
  31                          TYPE_VIRTIO_BALLOON_PCI)
  32
  33 struct VirtIOBalloonPCI {
  34     VirtIOPCIProxy parent_obj;
  35     VirtIOBalloon vdev;
  36 };
  37
  38 static void virtio_balloon_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  39 {
  40     VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev);
  41     DeviceState *vdev = DEVICE(&dev->vdev);
  42
  43     vpci_dev->class_code = PCI_CLASS_OTHERS;
  44     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
  45 }
  46
  47 static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data)
  48 {
  49     DeviceClass *dc = DEVICE_CLASS(klass);
  50     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  51     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  52     k->realize = virtio_balloon_pci_realize;
  53     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  54     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  55     pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON;
  56     pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
  57     pcidev_k->class_id = PCI_CLASS_OTHERS;
  58 }
  59
  60 static void virtio_balloon_pci_instance_init(Object *obj)
  61 {
  62     VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj);
  63
  64     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  65                                 TYPE_VIRTIO_BALLOON);
  66     object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
  67                                   "guest-stats");
  68     object_property_add_alias(obj, "guest-stats-polling-interval",
  69                               OBJECT(&dev->vdev),
  70                               "guest-stats-polling-interval");
  71 }
  72
  73 static const VirtioPCIDeviceTypeInfo virtio_balloon_pci_info = {
  74     .base_name             = TYPE_VIRTIO_BALLOON_PCI,
  75     .generic_name          = "virtio-balloon-pci",
  76     .transitional_name     = "virtio-balloon-pci-transitional",
  77     .non_transitional_name = "virtio-balloon-pci-non-transitional",
  78     .instance_size = sizeof(VirtIOBalloonPCI),
  79     .instance_init = virtio_balloon_pci_instance_init,
  80     .class_init    = virtio_balloon_pci_class_init,
  81 };
  82
  83 static void virtio_balloon_pci_register(void)
  84 {
  85     virtio_pci_types_register(&virtio_balloon_pci_info);
  86 }
  87
  88 type_init(virtio_balloon_pci_register)