hw/virtio/vhost-user-vsock-pci.c

   1 /*
   2  * Vhost-user vsock PCI Bindings
   3  *
   4  * Copyright 2020 Red Hat, Inc.
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or
   7  * (at your option) any later version.  See the COPYING file in the
   8  * top-level directory.
   9  */
  10
  11 #include "qemu/osdep.h"
  12
  13 #include "virtio-pci.h"
  14 #include "hw/qdev-properties.h"
  15 #include "hw/virtio/vhost-user-vsock.h"
  16
  17 typedef struct VHostUserVSockPCI VHostUserVSockPCI;
  18
  19 /*
  20  * vhost-user-vsock-pci: This extends VirtioPCIProxy.
  21  */
  22 #define TYPE_VHOST_USER_VSOCK_PCI "vhost-user-vsock-pci-base"
  23 #define VHOST_USER_VSOCK_PCI(obj) \
  24         OBJECT_CHECK(VHostUserVSockPCI, (obj), TYPE_VHOST_USER_VSOCK_PCI)
  25
  26 struct VHostUserVSockPCI {
  27     VirtIOPCIProxy parent_obj;
  28     VHostUserVSock vdev;
  29 };
  30
  31 /* vhost-user-vsock-pci */
  32
  33 static Property vhost_user_vsock_pci_properties[] = {
  34     DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
  35     DEFINE_PROP_END_OF_LIST(),
  36 };
  37
  38 static void vhost_user_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  39 {
  40     VHostUserVSockPCI *dev = VHOST_USER_VSOCK_PCI(vpci_dev);
  41     DeviceState *vdev = DEVICE(&dev->vdev);
  42
  43     qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
  44     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  45 }
  46
  47 static void vhost_user_vsock_pci_class_init(ObjectClass *klass, void *data)
  48 {
  49     DeviceClass *dc = DEVICE_CLASS(klass);
  50     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  51     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  52     k->realize = vhost_user_vsock_pci_realize;
  53     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  54     device_class_set_props(dc, vhost_user_vsock_pci_properties);
  55     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  56     pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK;
  57     pcidev_k->revision = 0x00;
  58     pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
  59 }
  60
  61 static void vhost_user_vsock_pci_instance_init(Object *obj)
  62 {
  63     VHostUserVSockPCI *dev = VHOST_USER_VSOCK_PCI(obj);
  64
  65     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  66                                 TYPE_VHOST_USER_VSOCK);
  67 }
  68
  69 static const VirtioPCIDeviceTypeInfo vhost_user_vsock_pci_info = {
  70     .base_name             = TYPE_VHOST_USER_VSOCK_PCI,
  71     .generic_name          = "vhost-user-vsock-pci",
  72     .transitional_name     = "vhost-user-vsock-pci-transitional",
  73     .non_transitional_name = "vhost-user-vsock-pci-non-transitional",
  74     .instance_size = sizeof(VHostUserVSockPCI),
  75     .instance_init = vhost_user_vsock_pci_instance_init,
  76     .class_init    = vhost_user_vsock_pci_class_init,
  77 };
  78
  79 static void virtio_pci_vhost_register(void)
  80 {
  81     virtio_pci_types_register(&vhost_user_vsock_pci_info);
  82 }
  83
  84 type_init(virtio_pci_vhost_register)