1 /* 2 * Virtio blk PCI Bindings 3 * 4 * Copyright IBM, Corp. 2007 5 * Copyright (c) 2009 CodeSourcery 6 * 7 * Authors: 8 * Anthony Liguori <aliguori@us.ibm.com> 9 * Paul Brook <paul@codesourcery.com> 10 * 11 * This work is licensed under the terms of the GNU GPL, version 2. See 12 * the COPYING file in the top-level directory. 13 * 14 * Contributions after 2012-01-13 are licensed under the terms of the 15 * GNU GPL, version 2 or (at your option) any later version. 16 */ 17 18 #include "qemu/osdep.h" 19 20 #include "hw/qdev-properties.h" 21 #include "hw/virtio/virtio-blk.h" 22 #include "virtio-pci.h" 23 #include "qapi/error.h" 24 #include "qemu/module.h" 25 26 typedef struct VirtIOBlkPCI VirtIOBlkPCI; 27 28 /* 29 * virtio-blk-pci: This extends VirtioPCIProxy. 30 */ 31 #define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci-base" 32 #define VIRTIO_BLK_PCI(obj) \ 33 OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI) 34 35 struct VirtIOBlkPCI { 36 VirtIOPCIProxy parent_obj; 37 VirtIOBlock vdev; 38 }; 39 40 static Property virtio_blk_pci_properties[] = { 41 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0), 42 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, 43 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), 44 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 45 DEV_NVECTORS_UNSPECIFIED), 46 DEFINE_PROP_END_OF_LIST(), 47 }; 48 49 static void virtio_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 50 { 51 VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev); 52 DeviceState *vdev = DEVICE(&dev->vdev); 53 54 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { 55 vpci_dev->nvectors = dev->vdev.conf.num_queues + 1; 56 } 57 58 qdev_realize(vdev, BUS(&vpci_dev->bus), errp); 59 } 60 61 static void virtio_blk_pci_class_init(ObjectClass *klass, void *data) 62 { 63 DeviceClass *dc = DEVICE_CLASS(klass); 64 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 65 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 66 67 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 68 device_class_set_props(dc, virtio_blk_pci_properties); 69 k->realize = virtio_blk_pci_realize; 70 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; 71 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; 72 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; 73 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; 74 } 75 76 static void virtio_blk_pci_instance_init(Object *obj) 77 { 78 VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj); 79 80 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 81 TYPE_VIRTIO_BLK); 82 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 83 "bootindex"); 84 } 85 86 static const VirtioPCIDeviceTypeInfo virtio_blk_pci_info = { 87 .base_name = TYPE_VIRTIO_BLK_PCI, 88 .generic_name = "virtio-blk-pci", 89 .transitional_name = "virtio-blk-pci-transitional", 90 .non_transitional_name = "virtio-blk-pci-non-transitional", 91 .instance_size = sizeof(VirtIOBlkPCI), 92 .instance_init = virtio_blk_pci_instance_init, 93 .class_init = virtio_blk_pci_class_init, 94 }; 95 96 static void virtio_blk_pci_register(void) 97 { 98 virtio_pci_types_register(&virtio_blk_pci_info); 99 } 100 101 type_init(virtio_blk_pci_register) 102