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FORK: QEMU emulator
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virtio-crypto-pci.c (2736B)

      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)