hw/virtio/vhost-vsock-pci.c

   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 "virtio-pci.h"
  17 #include "hw/qdev-properties.h"
  18 #include "hw/virtio/vhost-vsock.h"
  19 #include "qemu/module.h"
  20
  21 typedef struct VHostVSockPCI VHostVSockPCI;
  22
  23 /*
  24  * vhost-vsock-pci: This extends VirtioPCIProxy.
  25  */
  26 #define TYPE_VHOST_VSOCK_PCI "vhost-vsock-pci-base"
  27 #define VHOST_VSOCK_PCI(obj) \
  28         OBJECT_CHECK(VHostVSockPCI, (obj), TYPE_VHOST_VSOCK_PCI)
  29
  30 struct VHostVSockPCI {
  31     VirtIOPCIProxy parent_obj;
  32     VHostVSock vdev;
  33 };
  34
  35 /* vhost-vsock-pci */
  36
  37 static Property vhost_vsock_pci_properties[] = {
  38     DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
  39     DEFINE_PROP_END_OF_LIST(),
  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
  47     qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
  48     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  49 }
  50
  51 static void vhost_vsock_pci_class_init(ObjectClass *klass, void *data)
  52 {
  53     DeviceClass *dc = DEVICE_CLASS(klass);
  54     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  55     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  56     k->realize = vhost_vsock_pci_realize;
  57     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  58     dc->props = vhost_vsock_pci_properties;
  59     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  60     pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK;
  61     pcidev_k->revision = 0x00;
  62     pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
  63 }
  64
  65 static void vhost_vsock_pci_instance_init(Object *obj)
  66 {
  67     VHostVSockPCI *dev = VHOST_VSOCK_PCI(obj);
  68
  69     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  70                                 TYPE_VHOST_VSOCK);
  71 }
  72
  73 static const VirtioPCIDeviceTypeInfo vhost_vsock_pci_info = {
  74     .base_name             = TYPE_VHOST_VSOCK_PCI,
  75     .generic_name          = "vhost-vsock-pci",
  76     .transitional_name     = "vhost-vsock-pci-transitional",
  77     .non_transitional_name = "vhost-vsock-pci-non-transitional",
  78     .instance_size = sizeof(VHostVSockPCI),
  79     .instance_init = vhost_vsock_pci_instance_init,
  80     .class_init    = vhost_vsock_pci_class_init,
  81 };
  82
  83 static void virtio_pci_vhost_register(void)
  84 {
  85     virtio_pci_types_register(&vhost_vsock_pci_info);
  86 }
  87
  88 type_init(virtio_pci_vhost_register)