LXR qemu/hw/virtio/virtio-crypto-pci.c

   1/*
   2 * Virtio crypto device
   3 *
   4 * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
   5 *
   6 * Authors:
   7 *    Gonglei <arei.gonglei@huawei.com>
   8 *
   9 * This work is licensed under the terms of the GNU GPL, version 2 or
  10 * (at your option) any later version.  See the COPYING file in the
  11 * top-level directory.
  12 *
  13 */
  14
  15#include "qemu/osdep.h"
  16#include "hw/pci/pci.h"
  17#include "hw/qdev-properties.h"
  18#include "hw/virtio/virtio.h"
  19#include "hw/virtio/virtio-bus.h"
  20#include "hw/virtio/virtio-pci.h"
  21#include "hw/virtio/virtio-crypto.h"
  22#include "qapi/error.h"
  23#include "qemu/module.h"
  24
  25typedef struct VirtIOCryptoPCI VirtIOCryptoPCI;
  26
  27/*
  28 * virtio-crypto-pci: This extends VirtioPCIProxy.
  29 */
  30#define TYPE_VIRTIO_CRYPTO_PCI "virtio-crypto-pci"
  31#define VIRTIO_CRYPTO_PCI(obj) \
  32        OBJECT_CHECK(VirtIOCryptoPCI, (obj), TYPE_VIRTIO_CRYPTO_PCI)
  33
  34struct VirtIOCryptoPCI {
  35    VirtIOPCIProxy parent_obj;
  36    VirtIOCrypto vdev;
  37};
  38
  39static Property virtio_crypto_pci_properties[] = {
  40    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
  41                    VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
  42    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
  43    DEFINE_PROP_END_OF_LIST(),
  44};
  45
  46static void virtio_crypto_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  47{
  48    VirtIOCryptoPCI *vcrypto = VIRTIO_CRYPTO_PCI(vpci_dev);
  49    DeviceState *vdev = DEVICE(&vcrypto->vdev);
  50
  51    if (vcrypto->vdev.conf.cryptodev == NULL) {
  52        error_setg(errp, "'cryptodev' parameter expects a valid object");
  53        return;
  54    }
  55
  56    qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
  57    virtio_pci_force_virtio_1(vpci_dev);
  58    object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  59    object_property_set_link(OBJECT(vcrypto),
  60                 OBJECT(vcrypto->vdev.conf.cryptodev), "cryptodev",
  61                 NULL);
  62}
  63
  64static void virtio_crypto_pci_class_init(ObjectClass *klass, void *data)
  65{
  66    DeviceClass *dc = DEVICE_CLASS(klass);
  67    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  68    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  69
  70    k->realize = virtio_crypto_pci_realize;
  71    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  72    dc->props = virtio_crypto_pci_properties;
  73    pcidev_k->class_id = PCI_CLASS_OTHERS;
  74}
  75
  76static void virtio_crypto_initfn(Object *obj)
  77{
  78    VirtIOCryptoPCI *dev = VIRTIO_CRYPTO_PCI(obj);
  79
  80    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  81                                TYPE_VIRTIO_CRYPTO);
  82}
  83
  84static const VirtioPCIDeviceTypeInfo virtio_crypto_pci_info = {
  85    .generic_name  = TYPE_VIRTIO_CRYPTO_PCI,
  86    .instance_size = sizeof(VirtIOCryptoPCI),
  87    .instance_init = virtio_crypto_initfn,
  88    .class_init    = virtio_crypto_pci_class_init,
  89};
  90
  91static void virtio_crypto_pci_register_types(void)
  92{
  93    virtio_pci_types_register(&virtio_crypto_pci_info);
  94}
  95type_init(virtio_crypto_pci_register_types)
  96