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 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 34 static void vhost_user_device_pci_class_init(ObjectClass *klass, void *data) 35 { 36 DeviceClass *dc = DEVICE_CLASS(klass); 37 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 38 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 39 40 /* Reason: stop users confusing themselves */ 41 dc->user_creatable = false; 42 43 k->realize = vhost_user_device_pci_realize; 44 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 45 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; 46 pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */ 47 pcidev_k->revision = 0x00; 48 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER; 49 } 50 51 static void vhost_user_device_pci_instance_init(Object *obj) 52 { 53 VHostUserDevicePCI *dev = VHOST_USER_DEVICE_PCI(obj); 54 55 virtio_instance_init_common(obj, &dev->vub, sizeof(dev->vub), 56 TYPE_VHOST_USER_DEVICE); 57 } 58 59 static const VirtioPCIDeviceTypeInfo vhost_user_device_pci_info = { 60 .base_name = TYPE_VHOST_USER_DEVICE_PCI, 61 .non_transitional_name = "vhost-user-device-pci", 62 .instance_size = sizeof(VHostUserDevicePCI), 63 .instance_init = vhost_user_device_pci_instance_init, 64 .class_init = vhost_user_device_pci_class_init, 65 }; 66 67 static void vhost_user_device_pci_register(void) 68 { 69 virtio_pci_types_register(&vhost_user_device_pci_info); 70 } 71 72 type_init(vhost_user_device_pci_register); 73