1 /*
2 * Vhost-user generic virtio device PCI glue
3 *
4 * Copyright (c) 2023 Linaro Ltd
5 * Author: Alex Bennée <alex.bennee@linaro.org>
6 *
7 * SPDX-License-Identifier: GPL-2.0-or-later
8 */
9
10 #include "qemu/osdep.h"
11 #include "hw/qdev-properties.h"
12 #include "hw/virtio/vhost-user-base.h"
13 #include "hw/virtio/virtio-pci.h"
14
15 struct VHostUserDevicePCI {
16 VirtIOPCIProxy parent_obj;
17
18 VHostUserBase vub;
19 };
20
21 #define TYPE_VHOST_USER_DEVICE_PCI "vhost-user-device-pci-base"
22
OBJECT_DECLARE_SIMPLE_TYPE(VHostUserDevicePCI,VHOST_USER_DEVICE_PCI)23 OBJECT_DECLARE_SIMPLE_TYPE(VHostUserDevicePCI, VHOST_USER_DEVICE_PCI)
24
25 static void vhost_user_device_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
26 {
27 VHostUserDevicePCI *dev = VHOST_USER_DEVICE_PCI(vpci_dev);
28 DeviceState *vdev = DEVICE(&dev->vub);
29
30 vpci_dev->nvectors = 1;
31 qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
32 }
33
vhost_user_device_pci_class_init(ObjectClass * klass,const void * data)34 static void vhost_user_device_pci_class_init(ObjectClass *klass,
35 const void *data)
36 {
37 DeviceClass *dc = DEVICE_CLASS(klass);
38 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
39 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
40
41 /* Reason: stop users confusing themselves */
42 dc->user_creatable = false;
43
44 k->realize = vhost_user_device_pci_realize;
45 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
46 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
47 pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
48 pcidev_k->revision = 0x00;
49 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
50 }
51
vhost_user_device_pci_instance_init(Object * obj)52 static void vhost_user_device_pci_instance_init(Object *obj)
53 {
54 VHostUserDevicePCI *dev = VHOST_USER_DEVICE_PCI(obj);
55
56 virtio_instance_init_common(obj, &dev->vub, sizeof(dev->vub),
57 TYPE_VHOST_USER_DEVICE);
58 }
59
60 static const VirtioPCIDeviceTypeInfo vhost_user_device_pci_info = {
61 .base_name = TYPE_VHOST_USER_DEVICE_PCI,
62 .non_transitional_name = "vhost-user-device-pci",
63 .instance_size = sizeof(VHostUserDevicePCI),
64 .instance_init = vhost_user_device_pci_instance_init,
65 .class_init = vhost_user_device_pci_class_init,
66 };
67
vhost_user_device_pci_register(void)68 static void vhost_user_device_pci_register(void)
69 {
70 virtio_pci_types_register(&vhost_user_device_pci_info);
71 }
72
73 type_init(vhost_user_device_pci_register);
74