2 * Virtio blk PCI Bindings
4 * Copyright IBM, Corp. 2007
5 * Copyright (c) 2009 CodeSourcery
8 * Anthony Liguori <aliguori@us.ibm.com>
9 * Paul Brook <paul@codesourcery.com>
11 * This work is licensed under the terms of the GNU GPL, version 2. See
12 * the COPYING file in the top-level directory.
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.
18 #include "qemu/osdep.h"
20 #include "hw/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"
27 typedef struct VirtIOBlkPCI VirtIOBlkPCI
;
30 * virtio-blk-pci: This extends VirtioPCIProxy.
32 #define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci-base"
33 DECLARE_INSTANCE_CHECKER(VirtIOBlkPCI
, VIRTIO_BLK_PCI
,
37 VirtIOPCIProxy parent_obj
;
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(),
50 static void virtio_blk_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
52 VirtIOBlkPCI
*dev
= VIRTIO_BLK_PCI(vpci_dev
);
53 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
54 VirtIOBlkConf
*conf
= &dev
->vdev
.conf
;
56 if (conf
->num_queues
== VIRTIO_BLK_AUTO_NUM_QUEUES
) {
57 conf
->num_queues
= virtio_pci_optimal_num_queues(0);
60 if (vpci_dev
->nvectors
== DEV_NVECTORS_UNSPECIFIED
) {
61 vpci_dev
->nvectors
= conf
->num_queues
+ 1;
64 qdev_realize(vdev
, BUS(&vpci_dev
->bus
), errp
);
67 static void virtio_blk_pci_class_init(ObjectClass
*klass
, void *data
)
69 DeviceClass
*dc
= DEVICE_CLASS(klass
);
70 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
71 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
73 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
74 device_class_set_props(dc
, virtio_blk_pci_properties
);
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
;
82 static void virtio_blk_pci_instance_init(Object
*obj
)
84 VirtIOBlkPCI
*dev
= VIRTIO_BLK_PCI(obj
);
86 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
88 object_property_add_alias(obj
, "bootindex", OBJECT(&dev
->vdev
),
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
,
102 static void virtio_blk_pci_register(void)
104 virtio_pci_types_register(&virtio_blk_pci_info
);
107 type_init(virtio_blk_pci_register
)