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ea7af5db JQ |
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 | ||
a27bd6c7 | 20 | #include "hw/qdev-properties.h" |
ea7af5db JQ |
21 | #include "hw/virtio/virtio-blk.h" |
22 | #include "virtio-pci.h" | |
23 | #include "qapi/error.h" | |
0b8fa32f | 24 | #include "qemu/module.h" |
db1015e9 | 25 | #include "qom/object.h" |
ea7af5db JQ |
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" | |
8110fa1d EH |
33 | DECLARE_INSTANCE_CHECKER(VirtIOBlkPCI, VIRTIO_BLK_PCI, |
34 | TYPE_VIRTIO_BLK_PCI) | |
ea7af5db JQ |
35 | |
36 | struct VirtIOBlkPCI { | |
37 | VirtIOPCIProxy parent_obj; | |
38 | VirtIOBlock vdev; | |
39 | }; | |
40 | ||
41 | static 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 | DEFINE_PROP_END_OF_LIST(), | |
48 | }; | |
49 | ||
50 | static void virtio_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) | |
51 | { | |
52 | VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev); | |
53 | DeviceState *vdev = DEVICE(&dev->vdev); | |
9445e1e1 SH |
54 | VirtIOBlkConf *conf = &dev->vdev.conf; |
55 | ||
56 | if (conf->num_queues == VIRTIO_BLK_AUTO_NUM_QUEUES) { | |
57 | conf->num_queues = virtio_pci_optimal_num_queues(0); | |
58 | } | |
ea7af5db JQ |
59 | |
60 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { | |
9445e1e1 | 61 | vpci_dev->nvectors = conf->num_queues + 1; |
ea7af5db JQ |
62 | } |
63 | ||
99ba777e | 64 | qdev_realize(vdev, BUS(&vpci_dev->bus), errp); |
ea7af5db JQ |
65 | } |
66 | ||
67 | static void virtio_blk_pci_class_init(ObjectClass *klass, void *data) | |
68 | { | |
69 | DeviceClass *dc = DEVICE_CLASS(klass); | |
70 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
71 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); | |
72 | ||
73 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); | |
4f67d30b | 74 | device_class_set_props(dc, virtio_blk_pci_properties); |
ea7af5db JQ |
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), | |
d2623129 | 89 | "bootindex"); |
ea7af5db JQ |
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) |