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/virtio/virtio-balloon.h"
  19 #include "qapi/error.h"
  20
  21 typedef struct VirtIOBalloonPCI VirtIOBalloonPCI;
  22
  23 /*
  24  * virtio-balloon-pci: This extends VirtioPCIProxy.
  25  */
  26 #define TYPE_VIRTIO_BALLOON_PCI "virtio-balloon-pci-base"
  27 #define VIRTIO_BALLOON_PCI(obj) \
  28         OBJECT_CHECK(VirtIOBalloonPCI, (obj), TYPE_VIRTIO_BALLOON_PCI)
  29
  30 struct VirtIOBalloonPCI {
  31     VirtIOPCIProxy parent_obj;
  32     VirtIOBalloon vdev;
  33 };
  34 static Property virtio_balloon_pci_properties[] = {
  35     DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
  36     DEFINE_PROP_END_OF_LIST(),
  37 };
  38
  39 static void virtio_balloon_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  40 {
  41     VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev);
  42     DeviceState *vdev = DEVICE(&dev->vdev);
  43
  44     if (vpci_dev->class_code != PCI_CLASS_OTHERS &&
  45         vpci_dev->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */
  46         vpci_dev->class_code = PCI_CLASS_OTHERS;
  47     }
  48
  49     qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
  50     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  51 }
  52
  53 static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data)
  54 {
  55     DeviceClass *dc = DEVICE_CLASS(klass);
  56     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  57     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  58     k->realize = virtio_balloon_pci_realize;
  59     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  60     dc->props = virtio_balloon_pci_properties;
  61     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  62     pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON;
  63     pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
  64     pcidev_k->class_id = PCI_CLASS_OTHERS;
  65 }
  66
  67 static void virtio_balloon_pci_instance_init(Object *obj)
  68 {
  69     VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj);
  70
  71     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  72                                 TYPE_VIRTIO_BALLOON);
  73     object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
  74                                   "guest-stats", &error_abort);
  75     object_property_add_alias(obj, "guest-stats-polling-interval",
  76                               OBJECT(&dev->vdev),
  77                               "guest-stats-polling-interval", &error_abort);
  78 }
  79
  80 static const VirtioPCIDeviceTypeInfo virtio_balloon_pci_info = {
  81     .base_name             = TYPE_VIRTIO_BALLOON_PCI,
  82     .generic_name          = "virtio-balloon-pci",
  83     .transitional_name     = "virtio-balloon-pci-transitional",
  84     .non_transitional_name = "virtio-balloon-pci-non-transitional",
  85     .instance_size = sizeof(VirtIOBalloonPCI),
  86     .instance_init = virtio_balloon_pci_instance_init,
  87     .class_init    = virtio_balloon_pci_class_init,
  88 };
  89
  90 static void virtio_balloon_pci_register(void)
  91 {
  92     virtio_pci_types_register(&virtio_balloon_pci_info);
  93 }
  94
  95 type_init(virtio_balloon_pci_register)