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
  23 typedef 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
  32 struct VirtIOBalloonPCI {
  33     VirtIOPCIProxy parent_obj;
  34     VirtIOBalloon vdev;
  35 };
  36 static Property virtio_balloon_pci_properties[] = {
  37     DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
  38     DEFINE_PROP_END_OF_LIST(),
  39 };
  40
  41 static 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_realize(vdev, BUS(&vpci_dev->bus), errp);
  52 }
  53
  54 static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data)
  55 {
  56     DeviceClass *dc = DEVICE_CLASS(klass);
  57     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  58     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  59     k->realize = virtio_balloon_pci_realize;
  60     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  61     device_class_set_props(dc, virtio_balloon_pci_properties);
  62     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  63     pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON;
  64     pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
  65     pcidev_k->class_id = PCI_CLASS_OTHERS;
  66 }
  67
  68 static void virtio_balloon_pci_instance_init(Object *obj)
  69 {
  70     VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj);
  71
  72     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  73                                 TYPE_VIRTIO_BALLOON);
  74     object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
  75                                   "guest-stats");
  76     object_property_add_alias(obj, "guest-stats-polling-interval",
  77                               OBJECT(&dev->vdev),
  78                               "guest-stats-polling-interval");
  79 }
  80
  81 static const VirtioPCIDeviceTypeInfo virtio_balloon_pci_info = {
  82     .base_name             = TYPE_VIRTIO_BALLOON_PCI,
  83     .generic_name          = "virtio-balloon-pci",
  84     .transitional_name     = "virtio-balloon-pci-transitional",
  85     .non_transitional_name = "virtio-balloon-pci-non-transitional",
  86     .instance_size = sizeof(VirtIOBalloonPCI),
  87     .instance_init = virtio_balloon_pci_instance_init,
  88     .class_init    = virtio_balloon_pci_class_init,
  89 };
  90
  91 static void virtio_balloon_pci_register(void)
  92 {
  93     virtio_pci_types_register(&virtio_balloon_pci_info);
  94 }
  95
  96 type_init(virtio_balloon_pci_register)