1 /* 2 * Vhost vsock PCI Bindings 3 * 4 * Copyright 2015 Red Hat, Inc. 5 * 6 * Authors: 7 * Stefan Hajnoczi <stefanha@redhat.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or 10 * (at your option) any later version. See the COPYING file in the 11 * top-level directory. 12 */ 13 14 #include "qemu/osdep.h" 15 16 #include "hw/virtio/virtio-pci.h" 17 #include "hw/qdev-properties.h" 18 #include "hw/virtio/vhost-vsock.h" 19 #include "qemu/module.h" 20 #include "qom/object.h" 21 22 typedef struct VHostVSockPCI VHostVSockPCI; 23 24 /* 25 * vhost-vsock-pci: This extends VirtioPCIProxy. 26 */ 27 #define TYPE_VHOST_VSOCK_PCI "vhost-vsock-pci-base" 28 DECLARE_INSTANCE_CHECKER(VHostVSockPCI, VHOST_VSOCK_PCI, 29 TYPE_VHOST_VSOCK_PCI) 30 31 struct VHostVSockPCI { 32 VirtIOPCIProxy parent_obj; 33 VHostVSock vdev; 34 }; 35 36 /* vhost-vsock-pci */ 37 38 static Property vhost_vsock_pci_properties[] = { 39 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), 40 DEFINE_PROP_END_OF_LIST(), 41 }; 42 43 static void vhost_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 44 { 45 VHostVSockPCI *dev = VHOST_VSOCK_PCI(vpci_dev); 46 DeviceState *vdev = DEVICE(&dev->vdev); 47 VirtIODevice *virtio_dev = VIRTIO_DEVICE(vdev); 48 49 /* 50 * To avoid migration issues, we force virtio version 1 only when 51 * legacy check is enabled in the new machine types (>= 5.1). 52 */ 53 if (!virtio_legacy_check_disabled(virtio_dev)) { 54 virtio_pci_force_virtio_1(vpci_dev); 55 } 56 57 qdev_realize(vdev, BUS(&vpci_dev->bus), errp); 58 } 59 60 static void vhost_vsock_pci_class_init(ObjectClass *klass, void *data) 61 { 62 DeviceClass *dc = DEVICE_CLASS(klass); 63 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 64 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 65 k->realize = vhost_vsock_pci_realize; 66 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 67 device_class_set_props(dc, vhost_vsock_pci_properties); 68 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; 69 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK; 70 pcidev_k->revision = 0x00; 71 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER; 72 } 73 74 static void vhost_vsock_pci_instance_init(Object *obj) 75 { 76 VHostVSockPCI *dev = VHOST_VSOCK_PCI(obj); 77 78 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 79 TYPE_VHOST_VSOCK); 80 } 81 82 static const VirtioPCIDeviceTypeInfo vhost_vsock_pci_info = { 83 .base_name = TYPE_VHOST_VSOCK_PCI, 84 .generic_name = "vhost-vsock-pci", 85 .non_transitional_name = "vhost-vsock-pci-non-transitional", 86 .instance_size = sizeof(VHostVSockPCI), 87 .instance_init = vhost_vsock_pci_instance_init, 88 .class_init = vhost_vsock_pci_class_init, 89 }; 90 91 static void virtio_pci_vhost_register(void) 92 { 93 virtio_pci_types_register(&vhost_vsock_pci_info); 94 } 95 96 type_init(virtio_pci_vhost_register) 97