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     qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
  40     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
  41     if (err) {
  42         error_propagate(errp, err);
  43         return;
  44     }
  45
  46     object_property_set_link(OBJECT(vrng),
  47                              OBJECT(vrng->vdev.conf.rng), "rng",
  48                              NULL);
  49 }
  50
  51 static void virtio_rng_pci_class_init(ObjectClass *klass, void *data)
  52 {
  53     DeviceClass *dc = DEVICE_CLASS(klass);
  54     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  55     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  56
  57     k->realize = virtio_rng_pci_realize;
  58     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  59
  60     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  61     pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_RNG;
  62     pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
  63     pcidev_k->class_id = PCI_CLASS_OTHERS;
  64 }
  65
  66 static void virtio_rng_initfn(Object *obj)
  67 {
  68     VirtIORngPCI *dev = VIRTIO_RNG_PCI(obj);
  69
  70     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  71                                 TYPE_VIRTIO_RNG);
  72 }
  73
  74 static const VirtioPCIDeviceTypeInfo virtio_rng_pci_info = {
  75     .base_name             = TYPE_VIRTIO_RNG_PCI,
  76     .generic_name          = "virtio-rng-pci",
  77     .transitional_name     = "virtio-rng-pci-transitional",
  78     .non_transitional_name = "virtio-rng-pci-non-transitional",
  79     .instance_size = sizeof(VirtIORngPCI),
  80     .instance_init = virtio_rng_initfn,
  81     .class_init    = virtio_rng_pci_class_init,
  82 };
  83
  84 static void virtio_rng_pci_register(void)
  85 {
  86     virtio_pci_types_register(&virtio_rng_pci_info);
  87 }
  88
  89 type_init(virtio_rng_pci_register)