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