1 /*
2 * Virtio rng PCI Bindings
3 *
4 * Copyright 2012 Red Hat, Inc.
5 * Copyright 2012 Amit Shah <amit.shah@redhat.com>
6 *
7 * This work is licensed under the terms of the GNU GPL, version 2 or
8 * (at your option) any later version. See the COPYING file in the
9 * top-level directory.
10 */
11
12 #include "qemu/osdep.h"
13
14 #include "hw/virtio/virtio-pci.h"
15 #include "hw/virtio/virtio-rng.h"
16 #include "hw/qdev-properties.h"
17 #include "qapi/error.h"
18 #include "qemu/module.h"
19 #include "qom/object.h"
20
21 typedef struct VirtIORngPCI VirtIORngPCI;
22
23 /*
24 * virtio-rng-pci: This extends VirtioPCIProxy.
25 */
26 #define TYPE_VIRTIO_RNG_PCI "virtio-rng-pci-base"
27 DECLARE_INSTANCE_CHECKER(VirtIORngPCI, VIRTIO_RNG_PCI,
28 TYPE_VIRTIO_RNG_PCI)
29
30 struct VirtIORngPCI {
31 VirtIOPCIProxy parent_obj;
32 VirtIORNG vdev;
33 };
34
35 static Property virtio_rng_properties[] = {
36 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
37 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
38 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
39 DEV_NVECTORS_UNSPECIFIED),
40 DEFINE_PROP_END_OF_LIST(),
41 };
42
virtio_rng_pci_realize(VirtIOPCIProxy * vpci_dev,Error ** errp)43 static void virtio_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
44 {
45 VirtIORngPCI *vrng = VIRTIO_RNG_PCI(vpci_dev);
46 DeviceState *vdev = DEVICE(&vrng->vdev);
47
48 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
49 vpci_dev->nvectors = 2;
50 }
51
52 if (!qdev_realize(vdev, BUS(&vpci_dev->bus), errp)) {
53 return;
54 }
55 }
56
virtio_rng_pci_class_init(ObjectClass * klass,void * data)57 static void virtio_rng_pci_class_init(ObjectClass *klass, void *data)
58 {
59 DeviceClass *dc = DEVICE_CLASS(klass);
60 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
61 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
62
63 k->realize = virtio_rng_pci_realize;
64 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
65
66 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
67 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_RNG;
68 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
69 pcidev_k->class_id = PCI_CLASS_OTHERS;
70 device_class_set_props(dc, virtio_rng_properties);
71 }
72
virtio_rng_initfn(Object * obj)73 static void virtio_rng_initfn(Object *obj)
74 {
75 VirtIORngPCI *dev = VIRTIO_RNG_PCI(obj);
76
77 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
78 TYPE_VIRTIO_RNG);
79 }
80
81 static const VirtioPCIDeviceTypeInfo virtio_rng_pci_info = {
82 .base_name = TYPE_VIRTIO_RNG_PCI,
83 .generic_name = "virtio-rng-pci",
84 .transitional_name = "virtio-rng-pci-transitional",
85 .non_transitional_name = "virtio-rng-pci-non-transitional",
86 .instance_size = sizeof(VirtIORngPCI),
87 .instance_init = virtio_rng_initfn,
88 .class_init = virtio_rng_pci_class_init,
89 };
90
virtio_rng_pci_register(void)91 static void virtio_rng_pci_register(void)
92 {
93 virtio_pci_types_register(&virtio_rng_pci_info);
94 }
95
96 type_init(virtio_rng_pci_register)
97