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
  24 typedef 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
  33 struct VirtIOCryptoPCI {
  34     VirtIOPCIProxy parent_obj;
  35     VirtIOCrypto vdev;
  36 };
  37
  38 static 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
  45 static 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
  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     dc->props = 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)