@samitouri / QOSamiQemu
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1 /*
2 * Vhost-user RNG virtio device PCI glue
3 *
4 * Copyright (c) 2021 Mathieu Poirier <mathieu.poirier@linaro.org>
5 *
6 * SPDX-License-Identifier: GPL-2.0-or-later
7 */
8
9 #include "qemu/osdep.h"
10 #include "hw/core/qdev-properties.h"
11 #include "hw/virtio/vhost-user-rng.h"
12 #include "hw/virtio/virtio-pci.h"
13
14 struct VHostUserRNGPCI {
15 VirtIOPCIProxy parent_obj;
16 VHostUserRNG vdev;
17 };
18
19 typedef struct VHostUserRNGPCI VHostUserRNGPCI;
20
21 #define TYPE_VHOST_USER_RNG_PCI "vhost-user-rng-pci-base"
22
23 DECLARE_INSTANCE_CHECKER(VHostUserRNGPCI, VHOST_USER_RNG_PCI,
24 TYPE_VHOST_USER_RNG_PCI)
25
26 static const Property vhost_user_rng_pci_properties[] = {
27 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
28 DEV_NVECTORS_UNSPECIFIED),
29 };
30
31 static void vhost_user_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
32 {
33 VHostUserRNGPCI *dev = VHOST_USER_RNG_PCI(vpci_dev);
34 DeviceState *vdev = DEVICE(&dev->vdev);
35
36 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
37 vpci_dev->nvectors = 1;
38 }
39
40 qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
41 }
42
43 static void vhost_user_rng_pci_class_init(ObjectClass *klass, const void *data)
44 {
45 DeviceClass *dc = DEVICE_CLASS(klass);
46 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
47 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
48 k->realize = vhost_user_rng_pci_realize;
49 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
50 device_class_set_props(dc, vhost_user_rng_pci_properties);
51 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
52 pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
53 pcidev_k->revision = 0x00;
54 pcidev_k->class_id = PCI_CLASS_OTHERS;
55 }
56
57 static void vhost_user_rng_pci_instance_init(Object *obj)
58 {
59 VHostUserRNGPCI *dev = VHOST_USER_RNG_PCI(obj);
60
61 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
62 TYPE_VHOST_USER_RNG);
63 }
64
65 static const VirtioPCIDeviceTypeInfo vhost_user_rng_pci_info = {
66 .base_name = TYPE_VHOST_USER_RNG_PCI,
67 .non_transitional_name = "vhost-user-rng-pci",
68 .instance_size = sizeof(VHostUserRNGPCI),
69 .instance_init = vhost_user_rng_pci_instance_init,
70 .class_init = vhost_user_rng_pci_class_init,
71 };
72
73 static void vhost_user_rng_pci_register(void)
74 {
75 virtio_pci_types_register(&vhost_user_rng_pci_info);
76 }
77
78 type_init(vhost_user_rng_pci_register);