| 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/core/qdev-properties.h" |
| 21 | #include "hw/virtio/virtio-blk.h" |
| 22 | #include "hw/virtio/virtio-pci.h" |
| 23 | #include "qapi/error.h" |
| 24 | #include "qemu/module.h" |
| 25 | #include "qom/object.h" |
| 26 | |
| 27 | typedef struct VirtIOBlkPCI VirtIOBlkPCI; |
| 28 | |
| 29 | /* |
| 30 | * virtio-blk-pci: This extends VirtioPCIProxy. |
| 31 | */ |
| 32 | #define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci-base" |
| 33 | DECLARE_INSTANCE_CHECKER(VirtIOBlkPCI, VIRTIO_BLK_PCI, |
| 34 | TYPE_VIRTIO_BLK_PCI) |
| 35 | |
| 36 | struct VirtIOBlkPCI { |
| 37 | VirtIOPCIProxy parent_obj; |
| 38 | VirtIOBlock vdev; |
| 39 | }; |
| 40 | |
| 41 | static const Property virtio_blk_pci_properties[] = { |
| 42 | DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0), |
| 43 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, |
| 44 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
| 45 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, |
| 46 | DEV_NVECTORS_UNSPECIFIED), |
| 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 | VirtIOBlkConf *conf = &dev->vdev.conf; |
| 54 | |
| 55 | if (conf->num_queues == VIRTIO_BLK_AUTO_NUM_QUEUES) { |
| 56 | conf->num_queues = virtio_pci_optimal_num_queues(0); |
| 57 | } |
| 58 | |
| 59 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { |
| 60 | vpci_dev->nvectors = conf->num_queues + 1; |
| 61 | } |
| 62 | |
| 63 | qdev_realize(vdev, BUS(&vpci_dev->bus), errp); |
| 64 | } |
| 65 | |
| 66 | static void virtio_blk_pci_class_init(ObjectClass *klass, const void *data) |
| 67 | { |
| 68 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 69 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
| 70 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
| 71 | |
| 72 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
| 73 | device_class_set_props(dc, virtio_blk_pci_properties); |
| 74 | pci_qdev_property_add_specifics(dc); |
| 75 | k->realize = virtio_blk_pci_realize; |
| 76 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
| 77 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; |
| 78 | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; |
| 79 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; |
| 80 | } |
| 81 | |
| 82 | static void virtio_blk_pci_instance_init(Object *obj) |
| 83 | { |
| 84 | VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj); |
| 85 | |
| 86 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), |
| 87 | TYPE_VIRTIO_BLK); |
| 88 | object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), |
| 89 | "bootindex"); |
| 90 | } |
| 91 | |
| 92 | static const VirtioPCIDeviceTypeInfo virtio_blk_pci_info = { |
| 93 | .base_name = TYPE_VIRTIO_BLK_PCI, |
| 94 | .generic_name = "virtio-blk-pci", |
| 95 | .transitional_name = "virtio-blk-pci-transitional", |
| 96 | .non_transitional_name = "virtio-blk-pci-non-transitional", |
| 97 | .instance_size = sizeof(VirtIOBlkPCI), |
| 98 | .instance_init = virtio_blk_pci_instance_init, |
| 99 | .class_init = virtio_blk_pci_class_init, |
| 100 | }; |
| 101 | |
| 102 | static void virtio_blk_pci_register(void) |
| 103 | { |
| 104 | virtio_pci_types_register(&virtio_blk_pci_info); |
| 105 | } |
| 106 | |
| 107 | type_init(virtio_blk_pci_register) |