1 /* 2 * Virtio rng PCI Bindings 3 * 4 * Copyright 2012 Red Hat, Inc. 5 * Copyright 2012 Amit Shah <amit.shah@redhat.com> 6 * 7 * This work is licensed under the terms of the GNU GPL, version 2 or 8 * (at your option) any later version. See the COPYING file in the 9 * top-level directory. 10 */ 11 12 #include "qemu/osdep.h" 13 14 #include "hw/virtio/virtio-pci.h" 15 #include "hw/virtio/virtio-rng.h" 16 #include "hw/qdev-properties.h" 17 #include "qapi/error.h" 18 #include "qemu/module.h" 19 #include "qom/object.h" 20 21 typedef struct VirtIORngPCI VirtIORngPCI; 22 23 /* 24 * virtio-rng-pci: This extends VirtioPCIProxy. 25 */ 26 #define TYPE_VIRTIO_RNG_PCI "virtio-rng-pci-base" 27 DECLARE_INSTANCE_CHECKER(VirtIORngPCI, VIRTIO_RNG_PCI, 28 TYPE_VIRTIO_RNG_PCI) 29 30 struct VirtIORngPCI { 31 VirtIOPCIProxy parent_obj; 32 VirtIORNG vdev; 33 }; 34 35 static Property virtio_rng_properties[] = { 36 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, 37 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), 38 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 39 DEV_NVECTORS_UNSPECIFIED), 40 DEFINE_PROP_END_OF_LIST(), 41 }; 42 43 static void virtio_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 44 { 45 VirtIORngPCI *vrng = VIRTIO_RNG_PCI(vpci_dev); 46 DeviceState *vdev = DEVICE(&vrng->vdev); 47 48 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { 49 vpci_dev->nvectors = 2; 50 } 51 52 if (!qdev_realize(vdev, BUS(&vpci_dev->bus), errp)) { 53 return; 54 } 55 } 56 57 static void virtio_rng_pci_class_init(ObjectClass *klass, void *data) 58 { 59 DeviceClass *dc = DEVICE_CLASS(klass); 60 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 61 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 62 63 k->realize = virtio_rng_pci_realize; 64 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 65 66 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; 67 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_RNG; 68 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; 69 pcidev_k->class_id = PCI_CLASS_OTHERS; 70 device_class_set_props(dc, virtio_rng_properties); 71 } 72 73 static void virtio_rng_initfn(Object *obj) 74 { 75 VirtIORngPCI *dev = VIRTIO_RNG_PCI(obj); 76 77 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 78 TYPE_VIRTIO_RNG); 79 } 80 81 static const VirtioPCIDeviceTypeInfo virtio_rng_pci_info = { 82 .base_name = TYPE_VIRTIO_RNG_PCI, 83 .generic_name = "virtio-rng-pci", 84 .transitional_name = "virtio-rng-pci-transitional", 85 .non_transitional_name = "virtio-rng-pci-non-transitional", 86 .instance_size = sizeof(VirtIORngPCI), 87 .instance_init = virtio_rng_initfn, 88 .class_init = virtio_rng_pci_class_init, 89 }; 90 91 static void virtio_rng_pci_register(void) 92 { 93 virtio_pci_types_register(&virtio_rng_pci_info); 94 } 95 96 type_init(virtio_rng_pci_register) 97