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
  22 typedef 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
  31 struct VirtIOCryptoPCI {
  32     VirtIOPCIProxy parent_obj;
  33     VirtIOCrypto vdev;
  34 };
  35
  36 static 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
  43 static 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
  61 static 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
  73 static 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
  81 static 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
  88 static void virtio_crypto_pci_register_types(void)
  89 {
  90     virtio_pci_types_register(&virtio_crypto_pci_info);
  91 }
  92 type_init(virtio_crypto_pci_register_types)