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/virtio/vhost-vsock.h"
  18 #include "qemu/module.h"
  19
  20 typedef struct VHostVSockPCI VHostVSockPCI;
  21
  22 /*
  23  * vhost-vsock-pci: This extends VirtioPCIProxy.
  24  */
  25 #define TYPE_VHOST_VSOCK_PCI "vhost-vsock-pci-base"
  26 #define VHOST_VSOCK_PCI(obj) \
  27         OBJECT_CHECK(VHostVSockPCI, (obj), TYPE_VHOST_VSOCK_PCI)
  28
  29 struct VHostVSockPCI {
  30     VirtIOPCIProxy parent_obj;
  31     VHostVSock vdev;
  32 };
  33
  34 /* vhost-vsock-pci */
  35
  36 static Property vhost_vsock_pci_properties[] = {
  37     DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
  38     DEFINE_PROP_END_OF_LIST(),
  39 };
  40
  41 static void vhost_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  42 {
  43     VHostVSockPCI *dev = VHOST_VSOCK_PCI(vpci_dev);
  44     DeviceState *vdev = DEVICE(&dev->vdev);
  45
  46     qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
  47     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  48 }
  49
  50 static void vhost_vsock_pci_class_init(ObjectClass *klass, void *data)
  51 {
  52     DeviceClass *dc = DEVICE_CLASS(klass);
  53     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  54     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  55     k->realize = vhost_vsock_pci_realize;
  56     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  57     dc->props = vhost_vsock_pci_properties;
  58     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  59     pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK;
  60     pcidev_k->revision = 0x00;
  61     pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
  62 }
  63
  64 static void vhost_vsock_pci_instance_init(Object *obj)
  65 {
  66     VHostVSockPCI *dev = VHOST_VSOCK_PCI(obj);
  67
  68     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  69                                 TYPE_VHOST_VSOCK);
  70 }
  71
  72 static const VirtioPCIDeviceTypeInfo vhost_vsock_pci_info = {
  73     .base_name             = TYPE_VHOST_VSOCK_PCI,
  74     .generic_name          = "vhost-vsock-pci",
  75     .transitional_name     = "vhost-vsock-pci-transitional",
  76     .non_transitional_name = "vhost-vsock-pci-non-transitional",
  77     .instance_size = sizeof(VHostVSockPCI),
  78     .instance_init = vhost_vsock_pci_instance_init,
  79     .class_init    = vhost_vsock_pci_class_init,
  80 };
  81
  82 static void virtio_pci_vhost_register(void)
  83 {
  84     virtio_pci_types_register(&vhost_vsock_pci_info);
  85 }
  86
  87 type_init(virtio_pci_vhost_register)