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
25typedef 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
34struct VirtIOCryptoPCI {
35 VirtIOPCIProxy parent_obj;
36 VirtIOCrypto vdev;
37};
38
39static 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
46static 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
64static 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
76static 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
84static 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
91static void virtio_crypto_pci_register_types(void)
92{
93 virtio_pci_types_register(&virtio_crypto_pci_info);
94}
95type_init(virtio_crypto_pci_register_types)
96