hw/virtio/virtio-rng-pci.c

   1 /*
   2  * Virtio rng PCI Bindings
   3  *
   4  * Copyright 2012 Red Hat, Inc.
   5  * Copyright 2012 Amit Shah <amit.shah@redhat.com>
   6  *
   7  * This work is licensed under the terms of the GNU GPL, version 2 or
   8  * (at your option) any later version.  See the COPYING file in the
   9  * top-level directory.
  10  */
  11
  12 #include "qemu/osdep.h"
  13
  14 #include "hw/virtio/virtio-pci.h"
  15 #include "hw/virtio/virtio-rng.h"
  16 #include "qapi/error.h"
  17 #include "qemu/module.h"
  18 #include "qom/object.h"
  19
  20 typedef struct VirtIORngPCI VirtIORngPCI;
  21
  22 /*
  23  * virtio-rng-pci: This extends VirtioPCIProxy.
  24  */
  25 #define TYPE_VIRTIO_RNG_PCI "virtio-rng-pci-base"
  26 DECLARE_INSTANCE_CHECKER(VirtIORngPCI, VIRTIO_RNG_PCI,
  27                          TYPE_VIRTIO_RNG_PCI)
  28
  29 struct VirtIORngPCI {
  30     VirtIOPCIProxy parent_obj;
  31     VirtIORNG vdev;
  32 };
  33
  34 static void virtio_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  35 {
  36     VirtIORngPCI *vrng = VIRTIO_RNG_PCI(vpci_dev);
  37     DeviceState *vdev = DEVICE(&vrng->vdev);
  38
  39     if (!qdev_realize(vdev, BUS(&vpci_dev->bus), errp)) {
  40         return;
  41     }
  42 }
  43
  44 static void virtio_rng_pci_class_init(ObjectClass *klass, void *data)
  45 {
  46     DeviceClass *dc = DEVICE_CLASS(klass);
  47     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  48     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  49
  50     k->realize = virtio_rng_pci_realize;
  51     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  52
  53     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  54     pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_RNG;
  55     pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
  56     pcidev_k->class_id = PCI_CLASS_OTHERS;
  57 }
  58
  59 static void virtio_rng_initfn(Object *obj)
  60 {
  61     VirtIORngPCI *dev = VIRTIO_RNG_PCI(obj);
  62
  63     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  64                                 TYPE_VIRTIO_RNG);
  65 }
  66
  67 static const VirtioPCIDeviceTypeInfo virtio_rng_pci_info = {
  68     .base_name             = TYPE_VIRTIO_RNG_PCI,
  69     .generic_name          = "virtio-rng-pci",
  70     .transitional_name     = "virtio-rng-pci-transitional",
  71     .non_transitional_name = "virtio-rng-pci-non-transitional",
  72     .instance_size = sizeof(VirtIORngPCI),
  73     .instance_init = virtio_rng_initfn,
  74     .class_init    = virtio_rng_pci_class_init,
  75 };
  76
  77 static void virtio_rng_pci_register(void)
  78 {
  79     virtio_pci_types_register(&virtio_rng_pci_info);
  80 }
  81
  82 type_init(virtio_rng_pci_register)