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) |
96 | |