qemu

FORK: QEMU emulator
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virtio-net-pci.c (3436B)

      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 "hw/virtio/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)