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_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
59 | object_property_set_bool(OBJECT(vdev), true, "realized" , errp); |
60 | } |
61 | |
62 | static void virtio_blk_pci_class_init(ObjectClass *klass, void *data) |
63 | { |
64 | DeviceClass *dc = DEVICE_CLASS(klass); |
65 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
66 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
67 | |
68 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
69 | dc->props = virtio_blk_pci_properties; |
70 | k->realize = virtio_blk_pci_realize; |
71 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
72 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; |
73 | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; |
74 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; |
75 | } |
76 | |
77 | static void virtio_blk_pci_instance_init(Object *obj) |
78 | { |
79 | VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj); |
80 | |
81 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), |
82 | TYPE_VIRTIO_BLK); |
83 | object_property_add_alias(obj, "bootindex" , OBJECT(&dev->vdev), |
84 | "bootindex" , &error_abort); |
85 | } |
86 | |
87 | static const VirtioPCIDeviceTypeInfo virtio_blk_pci_info = { |
88 | .base_name = TYPE_VIRTIO_BLK_PCI, |
89 | .generic_name = "virtio-blk-pci" , |
90 | .transitional_name = "virtio-blk-pci-transitional" , |
91 | .non_transitional_name = "virtio-blk-pci-non-transitional" , |
92 | .instance_size = sizeof(VirtIOBlkPCI), |
93 | .instance_init = virtio_blk_pci_instance_init, |
94 | .class_init = virtio_blk_pci_class_init, |
95 | }; |
96 | |
97 | static void virtio_blk_pci_register(void) |
98 | { |
99 | virtio_pci_types_register(&virtio_blk_pci_info); |
100 | } |
101 | |
102 | type_init(virtio_blk_pci_register) |
103 | |