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 "hw/virtio/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 const Property virtio_balloon_properties[] = {
39 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
40 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
41 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
42 DEV_NVECTORS_UNSPECIFIED),
43 };
44
virtio_balloon_pci_realize(VirtIOPCIProxy * vpci_dev,Error ** errp)45 static void virtio_balloon_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
46 {
47 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev);
48 DeviceState *vdev = DEVICE(&dev->vdev);
49
50 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
51 vpci_dev->nvectors = 2;
52 }
53
54 vpci_dev->class_code = PCI_CLASS_OTHERS;
55 qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
56 }
57
virtio_balloon_pci_class_init(ObjectClass * klass,const void * data)58 static void virtio_balloon_pci_class_init(ObjectClass *klass, const void *data)
59 {
60 DeviceClass *dc = DEVICE_CLASS(klass);
61 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
62 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
63 k->realize = virtio_balloon_pci_realize;
64 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
65 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
66 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON;
67 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
68 pcidev_k->class_id = PCI_CLASS_OTHERS;
69 device_class_set_props(dc, virtio_balloon_properties);
70 }
71
virtio_balloon_pci_instance_init(Object * obj)72 static void virtio_balloon_pci_instance_init(Object *obj)
73 {
74 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj);
75
76 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
77 TYPE_VIRTIO_BALLOON);
78 object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
79 "guest-stats");
80 object_property_add_alias(obj, "guest-stats-polling-interval",
81 OBJECT(&dev->vdev),
82 "guest-stats-polling-interval");
83 }
84
85 static const VirtioPCIDeviceTypeInfo virtio_balloon_pci_info = {
86 .base_name = TYPE_VIRTIO_BALLOON_PCI,
87 .generic_name = "virtio-balloon-pci",
88 .transitional_name = "virtio-balloon-pci-transitional",
89 .non_transitional_name = "virtio-balloon-pci-non-transitional",
90 .instance_size = sizeof(VirtIOBalloonPCI),
91 .instance_init = virtio_balloon_pci_instance_init,
92 .class_init = virtio_balloon_pci_class_init,
93 };
94
virtio_balloon_pci_register(void)95 static void virtio_balloon_pci_register(void)
96 {
97 virtio_pci_types_register(&virtio_balloon_pci_info);
98 }
99
100 type_init(virtio_balloon_pci_register)
101