virtio-crypto-pci: add check for cryptodev object
[qemu.git] / 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 static Property virtio_crypto_pci_properties[] = {
23 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
24 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
25 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
26 DEFINE_PROP_END_OF_LIST(),
27 };
28
29 static void virtio_crypto_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
30 {
31 VirtIOCryptoPCI *vcrypto = VIRTIO_CRYPTO_PCI(vpci_dev);
32 DeviceState *vdev = DEVICE(&vcrypto->vdev);
33
34 if (vcrypto->vdev.conf.cryptodev == NULL) {
35 error_setg(errp, "'cryptodev' parameter expects a valid object");
36 return;
37 }
38
39 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
40 virtio_pci_force_virtio_1(vpci_dev);
41 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
42 object_property_set_link(OBJECT(vcrypto),
43 OBJECT(vcrypto->vdev.conf.cryptodev), "cryptodev",
44 NULL);
45 }
46
47 static void virtio_crypto_pci_class_init(ObjectClass *klass, void *data)
48 {
49 DeviceClass *dc = DEVICE_CLASS(klass);
50 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
51 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
52
53 k->realize = virtio_crypto_pci_realize;
54 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
55 dc->props = virtio_crypto_pci_properties;
56 dc->hotpluggable = false;
57 pcidev_k->class_id = PCI_CLASS_OTHERS;
58 }
59
60 static void virtio_crypto_initfn(Object *obj)
61 {
62 VirtIOCryptoPCI *dev = VIRTIO_CRYPTO_PCI(obj);
63
64 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
65 TYPE_VIRTIO_CRYPTO);
66 object_property_add_alias(obj, "cryptodev", OBJECT(&dev->vdev),
67 "cryptodev", &error_abort);
68 }
69
70 static const TypeInfo virtio_crypto_pci_info = {
71 .name = TYPE_VIRTIO_CRYPTO_PCI,
72 .parent = TYPE_VIRTIO_PCI,
73 .instance_size = sizeof(VirtIOCryptoPCI),
74 .instance_init = virtio_crypto_initfn,
75 .class_init = virtio_crypto_pci_class_init,
76 };
77
78 static void virtio_crypto_pci_register_types(void)
79 {
80 type_register_static(&virtio_crypto_pci_info);
81 }
82 type_init(virtio_crypto_pci_register_types)