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 #include "qom/object.h"
  25
  26 typedef struct VirtIOCryptoPCI VirtIOCryptoPCI;
  27
  28 /*
  29  * virtio-crypto-pci: This extends VirtioPCIProxy.
  30  */
  31 #define TYPE_VIRTIO_CRYPTO_PCI "virtio-crypto-pci"
  32 DECLARE_INSTANCE_CHECKER(VirtIOCryptoPCI, VIRTIO_CRYPTO_PCI,
  33                          TYPE_VIRTIO_CRYPTO_PCI)
  34
  35 struct VirtIOCryptoPCI {
  36     VirtIOPCIProxy parent_obj;
  37     VirtIOCrypto vdev;
  38 };
  39
  40 static Property virtio_crypto_pci_properties[] = {
  41     DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
  42                     VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
  43     DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
  44     DEFINE_PROP_END_OF_LIST(),
  45 };
  46
  47 static void virtio_crypto_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  48 {
  49     VirtIOCryptoPCI *vcrypto = VIRTIO_CRYPTO_PCI(vpci_dev);
  50     DeviceState *vdev = DEVICE(&vcrypto->vdev);
  51
  52     if (vcrypto->vdev.conf.cryptodev == NULL) {
  53         error_setg(errp, "'cryptodev' parameter expects a valid object");
  54         return;
  55     }
  56
  57     virtio_pci_force_virtio_1(vpci_dev);
  58     if (!qdev_realize(vdev, BUS(&vpci_dev->bus), errp)) {
  59         return;
  60     }
  61 }
  62
  63 static 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     device_class_set_props(dc, virtio_crypto_pci_properties);
  72     pcidev_k->class_id = PCI_CLASS_OTHERS;
  73 }
  74
  75 static 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
  83 static 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
  90 static void virtio_crypto_pci_register_types(void)
  91 {
  92     virtio_pci_types_register(&virtio_crypto_pci_info);
  93 }
  94 type_init(virtio_crypto_pci_register_types)