1 /* 2 * Virtio net PCI Bindings 3 * 4 * Copyright IBM, Corp. 2007 5 * Copyright (c) 2009 CodeSourcery 6 * 7 * Authors: 8 * Anthony Liguori <aliguori@us.ibm.com> 9 * Paul Brook <paul@codesourcery.com> 10 * 11 * This work is licensed under the terms of the GNU GPL, version 2. See 12 * the COPYING file in the top-level directory. 13 * 14 * Contributions after 2012-01-13 are licensed under the terms of the 15 * GNU GPL, version 2 or (at your option) any later version. 16 */ 17 18 #include "qemu/osdep.h" 19 20 #include "hw/qdev-properties.h" 21 #include "hw/virtio/virtio-net.h" 22 #include "virtio-pci.h" 23 #include "qapi/error.h" 24 #include "qemu/module.h" 25 #include "qom/object.h" 26 27 typedef struct VirtIONetPCI VirtIONetPCI; 28 29 /* 30 * virtio-net-pci: This extends VirtioPCIProxy. 31 */ 32 #define TYPE_VIRTIO_NET_PCI "virtio-net-pci-base" 33 DECLARE_INSTANCE_CHECKER(VirtIONetPCI, VIRTIO_NET_PCI, 34 TYPE_VIRTIO_NET_PCI) 35 36 struct VirtIONetPCI { 37 VirtIOPCIProxy parent_obj; 38 VirtIONet vdev; 39 }; 40 41 static Property virtio_net_properties[] = { 42 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, 43 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), 44 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 45 DEV_NVECTORS_UNSPECIFIED), 46 DEFINE_PROP_END_OF_LIST(), 47 }; 48 49 static void virtio_net_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 50 { 51 DeviceState *qdev = DEVICE(vpci_dev); 52 VirtIONetPCI *dev = VIRTIO_NET_PCI(vpci_dev); 53 DeviceState *vdev = DEVICE(&dev->vdev); 54 VirtIONet *net = VIRTIO_NET(vdev); 55 56 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { 57 vpci_dev->nvectors = 2 * MAX(net->nic_conf.peers.queues, 1) 58 + 1 /* Config interrupt */ 59 + 1 /* Control vq */; 60 } 61 62 virtio_net_set_netclient_name(&dev->vdev, qdev->id, 63 object_get_typename(OBJECT(qdev))); 64 qdev_realize(vdev, BUS(&vpci_dev->bus), errp); 65 } 66 67 static void virtio_net_pci_class_init(ObjectClass *klass, void *data) 68 { 69 DeviceClass *dc = DEVICE_CLASS(klass); 70 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 71 VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass); 72 73 k->romfile = "efi-virtio.rom"; 74 k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; 75 k->device_id = PCI_DEVICE_ID_VIRTIO_NET; 76 k->revision = VIRTIO_PCI_ABI_VERSION; 77 k->class_id = PCI_CLASS_NETWORK_ETHERNET; 78 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); 79 device_class_set_props(dc, virtio_net_properties); 80 vpciklass->realize = virtio_net_pci_realize; 81 } 82 83 static void virtio_net_pci_instance_init(Object *obj) 84 { 85 VirtIONetPCI *dev = VIRTIO_NET_PCI(obj); 86 87 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 88 TYPE_VIRTIO_NET); 89 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 90 "bootindex"); 91 } 92 93 static const VirtioPCIDeviceTypeInfo virtio_net_pci_info = { 94 .base_name = TYPE_VIRTIO_NET_PCI, 95 .generic_name = "virtio-net-pci", 96 .transitional_name = "virtio-net-pci-transitional", 97 .non_transitional_name = "virtio-net-pci-non-transitional", 98 .instance_size = sizeof(VirtIONetPCI), 99 .instance_init = virtio_net_pci_instance_init, 100 .class_init = virtio_net_pci_class_init, 101 }; 102 103 static void virtio_net_pci_register(void) 104 { 105 virtio_pci_types_register(&virtio_net_pci_info); 106 } 107 108 type_init(virtio_net_pci_register) 109