xref: /openbmc/qemu/hw/virtio/virtio-balloon-pci.c (revision e1b1f534)
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 
virtio_balloon_pci_realize(VirtIOPCIProxy * vpci_dev,Error ** errp)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 
virtio_balloon_pci_class_init(ObjectClass * klass,void * data)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 
virtio_balloon_pci_instance_init(Object * obj)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 
virtio_balloon_pci_register(void)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)
89