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