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/virtio/virtio-blk.h" 21 #include "virtio-pci.h" 22 #include "qapi/error.h" 23 #include "qemu/module.h" 24 25 typedef struct VirtIOBlkPCI VirtIOBlkPCI; 26 27 /* 28 * virtio-blk-pci: This extends VirtioPCIProxy. 29 */ 30 #define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci-base" 31 #define VIRTIO_BLK_PCI(obj) \ 32 OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI) 33 34 struct VirtIOBlkPCI { 35 VirtIOPCIProxy parent_obj; 36 VirtIOBlock vdev; 37 }; 38 39 static Property virtio_blk_pci_properties[] = { 40 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0), 41 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, 42 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), 43 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 44 DEV_NVECTORS_UNSPECIFIED), 45 DEFINE_PROP_END_OF_LIST(), 46 }; 47 48 static void virtio_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 49 { 50 VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev); 51 DeviceState *vdev = DEVICE(&dev->vdev); 52 53 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { 54 vpci_dev->nvectors = dev->vdev.conf.num_queues + 1; 55 } 56 57 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); 58 object_property_set_bool(OBJECT(vdev), true, "realized", 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 dc->props = 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", &error_abort); 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