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 "hw/virtio/virtio-pci.h"
  14 #include "hw/qdev-properties.h"
  15 #include "hw/virtio/vhost-user-vsock.h"
  16 #include "qom/object.h"
  17
  18 typedef struct VHostUserVSockPCI VHostUserVSockPCI;
  19
  20 /*
  21  * vhost-user-vsock-pci: This extends VirtioPCIProxy.
  22  */
  23 #define TYPE_VHOST_USER_VSOCK_PCI "vhost-user-vsock-pci-base"
  24 DECLARE_INSTANCE_CHECKER(VHostUserVSockPCI, VHOST_USER_VSOCK_PCI,
  25                          TYPE_VHOST_USER_VSOCK_PCI)
  26
  27 struct VHostUserVSockPCI {
  28     VirtIOPCIProxy parent_obj;
  29     VHostUserVSock vdev;
  30 };
  31
  32 /* vhost-user-vsock-pci */
  33
  34 static Property vhost_user_vsock_pci_properties[] = {
  35     DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
  36     DEFINE_PROP_END_OF_LIST(),
  37 };
  38
  39 static void vhost_user_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  40 {
  41     VHostUserVSockPCI *dev = VHOST_USER_VSOCK_PCI(vpci_dev);
  42     DeviceState *vdev = DEVICE(&dev->vdev);
  43
  44     /* unlike vhost-vsock, we do not need to care about pre-5.1 compat */
  45     virtio_pci_force_virtio_1(vpci_dev);
  46
  47     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
  48 }
  49
  50 static void vhost_user_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_user_vsock_pci_realize;
  56     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  57     device_class_set_props(dc, vhost_user_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_user_vsock_pci_instance_init(Object *obj)
  65 {
  66     VHostUserVSockPCI *dev = VHOST_USER_VSOCK_PCI(obj);
  67
  68     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  69                                 TYPE_VHOST_USER_VSOCK);
  70 }
  71
  72 static const VirtioPCIDeviceTypeInfo vhost_user_vsock_pci_info = {
  73     .base_name             = TYPE_VHOST_USER_VSOCK_PCI,
  74     .generic_name          = "vhost-user-vsock-pci",
  75     .non_transitional_name = "vhost-user-vsock-pci-non-transitional",
  76     .instance_size = sizeof(VHostUserVSockPCI),
  77     .instance_init = vhost_user_vsock_pci_instance_init,
  78     .class_init    = vhost_user_vsock_pci_class_init,
  79 };
  80
  81 static void virtio_pci_vhost_register(void)
  82 {
  83     virtio_pci_types_register(&vhost_user_vsock_pci_info);
  84 }
  85
  86 type_init(virtio_pci_vhost_register)