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