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/virtio/virtio.h"
  18#include "hw/virtio/virtio-bus.h"
  19#include "hw/virtio/virtio-pci.h"
  20#include "hw/virtio/virtio-crypto.h"
  21#include "qapi/error.h"
  22#include "qemu/module.h"
  23
  24typedef struct VirtIOCryptoPCI VirtIOCryptoPCI;
  25
  26/*
  27 * virtio-crypto-pci: This extends VirtioPCIProxy.
  28 */
  29#define TYPE_VIRTIO_CRYPTO_PCI "virtio-crypto-pci"
  30#define VIRTIO_CRYPTO_PCI(obj) \
  31        OBJECT_CHECK(VirtIOCryptoPCI, (obj), TYPE_VIRTIO_CRYPTO_PCI)
  32
  33struct VirtIOCryptoPCI {
  34    VirtIOPCIProxy parent_obj;
  35    VirtIOCrypto vdev;
  36};
  37
  38static Property virtio_crypto_pci_properties[] = {
  39    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
  40                    VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
  41    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
  42    DEFINE_PROP_END_OF_LIST(),
  43};
  44
  45static void virtio_crypto_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  46{
  47    VirtIOCryptoPCI *vcrypto = VIRTIO_CRYPTO_PCI(vpci_dev);
  48    DeviceState *vdev = DEVICE(&vcrypto->vdev);
  49
  50    if (vcrypto->vdev.conf.cryptodev == NULL) {
  51        error_setg(errp, "'cryptodev' parameter expects a valid object");
  52        return;
  53    }
  54
  55    qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
  56    virtio_pci_force_virtio_1(vpci_dev);
  57    object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  58    object_property_set_link(OBJECT(vcrypto),
  59                 OBJECT(vcrypto->vdev.conf.cryptodev), "cryptodev",
  60                 NULL);
  61}
  62
  63static void virtio_crypto_pci_class_init(ObjectClass *klass, void *data)
  64{
  65    DeviceClass *dc = DEVICE_CLASS(klass);
  66    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  67    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  68
  69    k->realize = virtio_crypto_pci_realize;
  70    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  71    dc->props = virtio_crypto_pci_properties;
  72    pcidev_k->class_id = PCI_CLASS_OTHERS;
  73}
  74
  75static void virtio_crypto_initfn(Object *obj)
  76{
  77    VirtIOCryptoPCI *dev = VIRTIO_CRYPTO_PCI(obj);
  78
  79    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  80                                TYPE_VIRTIO_CRYPTO);
  81}
  82
  83static const VirtioPCIDeviceTypeInfo virtio_crypto_pci_info = {
  84    .generic_name  = TYPE_VIRTIO_CRYPTO_PCI,
  85    .instance_size = sizeof(VirtIOCryptoPCI),
  86    .instance_init = virtio_crypto_initfn,
  87    .class_init    = virtio_crypto_pci_class_init,
  88};
  89
  90static void virtio_crypto_pci_register_types(void)
  91{
  92    virtio_pci_types_register(&virtio_crypto_pci_info);
  93}
  94type_init(virtio_crypto_pci_register_types)
  95