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-device.h"
13 #include "hw/virtio/virtio-pci.h"
14 
15 struct VHostUserDevicePCI {
16     VirtIOPCIProxy parent_obj;
17     VHostUserBase vub;
18 };
19 
20 typedef struct VHostUserDevicePCI VHostUserDevicePCI;
21 
22 #define TYPE_VHOST_USER_DEVICE_PCI "vhost-user-device-pci-base"
23 
24 DECLARE_INSTANCE_CHECKER(VHostUserDevicePCI,
25                          VHOST_USER_DEVICE_PCI,
26                          TYPE_VHOST_USER_DEVICE_PCI)
27 
28 static void vhost_user_device_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
29 {
30     VHostUserDevicePCI *dev = VHOST_USER_DEVICE_PCI(vpci_dev);
31     DeviceState *vdev = DEVICE(&dev->vub);
32 
33     vpci_dev->nvectors = 1;
34     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
35 }
36 
37 static void vhost_user_device_pci_class_init(ObjectClass *klass, void *data)
38 {
39     DeviceClass *dc = DEVICE_CLASS(klass);
40     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
41     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
42     k->realize = vhost_user_device_pci_realize;
43     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
44     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
45     pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
46     pcidev_k->revision = 0x00;
47     pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
48 }
49 
50 static void vhost_user_device_pci_instance_init(Object *obj)
51 {
52     VHostUserDevicePCI *dev = VHOST_USER_DEVICE_PCI(obj);
53 
54     virtio_instance_init_common(obj, &dev->vub, sizeof(dev->vub),
55                                 TYPE_VHOST_USER_DEVICE);
56 }
57 
58 static const VirtioPCIDeviceTypeInfo vhost_user_device_pci_info = {
59     .base_name = TYPE_VHOST_USER_DEVICE_PCI,
60     .non_transitional_name = "vhost-user-device-pci",
61     .instance_size = sizeof(VHostUserDevicePCI),
62     .instance_init = vhost_user_device_pci_instance_init,
63     .class_init = vhost_user_device_pci_class_init,
64 };
65 
66 static void vhost_user_device_pci_register(void)
67 {
68     virtio_pci_types_register(&vhost_user_device_pci_info);
69 }
70 
71 type_init(vhost_user_device_pci_register);
72