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 "virtio-pci.h"
  15 #include "hw/virtio/virtio-rng.h"
  16 #include "qapi/error.h"
  17 #include "qemu/module.h"
  18
  19 typedef struct VirtIORngPCI VirtIORngPCI;
  20
  21 /*
  22  * virtio-rng-pci: This extends VirtioPCIProxy.
  23  */
  24 #define TYPE_VIRTIO_RNG_PCI "virtio-rng-pci-base"
  25 #define VIRTIO_RNG_PCI(obj) \
  26         OBJECT_CHECK(VirtIORngPCI, (obj), TYPE_VIRTIO_RNG_PCI)
  27
  28 struct VirtIORngPCI {
  29     VirtIOPCIProxy parent_obj;
  30     VirtIORNG vdev;
  31 };
  32
  33 static void virtio_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  34 {
  35     VirtIORngPCI *vrng = VIRTIO_RNG_PCI(vpci_dev);
  36     DeviceState *vdev = DEVICE(&vrng->vdev);
  37     Error *err = NULL;
  38
  39     if (!qdev_realize(vdev, BUS(&vpci_dev->bus), &err)) {
  40         error_propagate(errp, err);
  41         return;
  42     }
  43
  44     object_property_set_link(OBJECT(vrng), "rng", OBJECT(vrng->vdev.conf.rng),
  45                              NULL);
  46 }
  47
  48 static void virtio_rng_pci_class_init(ObjectClass *klass, void *data)
  49 {
  50     DeviceClass *dc = DEVICE_CLASS(klass);
  51     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  52     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  53
  54     k->realize = virtio_rng_pci_realize;
  55     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  56
  57     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  58     pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_RNG;
  59     pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
  60     pcidev_k->class_id = PCI_CLASS_OTHERS;
  61 }
  62
  63 static void virtio_rng_initfn(Object *obj)
  64 {
  65     VirtIORngPCI *dev = VIRTIO_RNG_PCI(obj);
  66
  67     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  68                                 TYPE_VIRTIO_RNG);
  69 }
  70
  71 static const VirtioPCIDeviceTypeInfo virtio_rng_pci_info = {
  72     .base_name             = TYPE_VIRTIO_RNG_PCI,
  73     .generic_name          = "virtio-rng-pci",
  74     .transitional_name     = "virtio-rng-pci-transitional",
  75     .non_transitional_name = "virtio-rng-pci-non-transitional",
  76     .instance_size = sizeof(VirtIORngPCI),
  77     .instance_init = virtio_rng_initfn,
  78     .class_init    = virtio_rng_pci_class_init,
  79 };
  80
  81 static void virtio_rng_pci_register(void)
  82 {
  83     virtio_pci_types_register(&virtio_rng_pci_info);
  84 }
  85
  86 type_init(virtio_rng_pci_register)