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 const Property vhost_vsock_pci_properties[] = { 39 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), 40 }; 41 42 static void vhost_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 43 { 44 VHostVSockPCI *dev = VHOST_VSOCK_PCI(vpci_dev); 45 DeviceState *vdev = DEVICE(&dev->vdev); 46 VirtIODevice *virtio_dev = VIRTIO_DEVICE(vdev); 47 48 /* 49 * To avoid migration issues, we force virtio version 1 only when 50 * legacy check is enabled in the new machine types (>= 5.1). 51 */ 52 if (!virtio_legacy_check_disabled(virtio_dev)) { 53 virtio_pci_force_virtio_1(vpci_dev); 54 } 55 56 qdev_realize(vdev, BUS(&vpci_dev->bus), errp); 57 } 58 59 static void vhost_vsock_pci_class_init(ObjectClass *klass, void *data) 60 { 61 DeviceClass *dc = DEVICE_CLASS(klass); 62 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 63 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 64 k->realize = vhost_vsock_pci_realize; 65 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 66 device_class_set_props(dc, vhost_vsock_pci_properties); 67 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; 68 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK; 69 pcidev_k->revision = 0x00; 70 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER; 71 } 72 73 static void vhost_vsock_pci_instance_init(Object *obj) 74 { 75 VHostVSockPCI *dev = VHOST_VSOCK_PCI(obj); 76 77 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 78 TYPE_VHOST_VSOCK); 79 } 80 81 static const VirtioPCIDeviceTypeInfo vhost_vsock_pci_info = { 82 .base_name = TYPE_VHOST_VSOCK_PCI, 83 .generic_name = "vhost-vsock-pci", 84 .non_transitional_name = "vhost-vsock-pci-non-transitional", 85 .instance_size = sizeof(VHostVSockPCI), 86 .instance_init = vhost_vsock_pci_instance_init, 87 .class_init = vhost_vsock_pci_class_init, 88 }; 89 90 static void virtio_pci_vhost_register(void) 91 { 92 virtio_pci_types_register(&vhost_vsock_pci_info); 93 } 94 95 type_init(virtio_pci_vhost_register) 96