2 * Vhost user blk PCI Bindings
4 * Copyright(C) 2017 Intel Corporation.
7 * Changpeng Liu <changpeng.liu@intel.com>
9 * Largely based on the "vhost-user-scsi.c" and "vhost-scsi.c" implemented by:
10 * Felipe Franciosi <felipe@nutanix.com>
11 * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
12 * Nicholas Bellinger <nab@risingtidesystems.com>
14 * This work is licensed under the terms of the GNU LGPL, version 2 or later.
15 * See the COPYING.LIB file in the top-level directory.
19 #include "qemu/osdep.h"
21 #include "standard-headers/linux/virtio_pci.h"
22 #include "hw/virtio/virtio.h"
23 #include "hw/virtio/vhost-user-blk.h"
24 #include "hw/pci/pci.h"
25 #include "qapi/error.h"
26 #include "qemu/error-report.h"
27 #include "virtio-pci.h"
29 typedef struct VHostUserBlkPCI VHostUserBlkPCI
;
32 * vhost-user-blk-pci: This extends VirtioPCIProxy.
34 #define TYPE_VHOST_USER_BLK_PCI "vhost-user-blk-pci-base"
35 #define VHOST_USER_BLK_PCI(obj) \
36 OBJECT_CHECK(VHostUserBlkPCI, (obj), TYPE_VHOST_USER_BLK_PCI)
38 struct VHostUserBlkPCI
{
39 VirtIOPCIProxy parent_obj
;
43 static Property vhost_user_blk_pci_properties
[] = {
44 DEFINE_PROP_UINT32("class", VirtIOPCIProxy
, class_code
, 0),
45 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
,
46 DEV_NVECTORS_UNSPECIFIED
),
47 DEFINE_PROP_END_OF_LIST(),
50 static void vhost_user_blk_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
52 VHostUserBlkPCI
*dev
= VHOST_USER_BLK_PCI(vpci_dev
);
53 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
55 if (vpci_dev
->nvectors
== DEV_NVECTORS_UNSPECIFIED
) {
56 vpci_dev
->nvectors
= dev
->vdev
.num_queues
+ 1;
59 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
60 object_property_set_bool(OBJECT(vdev
), true, "realized", errp
);
63 static void vhost_user_blk_pci_class_init(ObjectClass
*klass
, void *data
)
65 DeviceClass
*dc
= DEVICE_CLASS(klass
);
66 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
67 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
69 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
70 dc
->props
= vhost_user_blk_pci_properties
;
71 k
->realize
= vhost_user_blk_pci_realize
;
72 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
73 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_BLOCK
;
74 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
75 pcidev_k
->class_id
= PCI_CLASS_STORAGE_SCSI
;
78 static void vhost_user_blk_pci_instance_init(Object
*obj
)
80 VHostUserBlkPCI
*dev
= VHOST_USER_BLK_PCI(obj
);
82 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
84 object_property_add_alias(obj
, "bootindex", OBJECT(&dev
->vdev
),
85 "bootindex", &error_abort
);
88 static const VirtioPCIDeviceTypeInfo vhost_user_blk_pci_info
= {
89 .base_name
= TYPE_VHOST_USER_BLK_PCI
,
90 .generic_name
= "vhost-user-blk-pci",
91 .transitional_name
= "vhost-user-blk-pci-transitional",
92 .non_transitional_name
= "vhost-user-blk-pci-non-transitional",
93 .instance_size
= sizeof(VHostUserBlkPCI
),
94 .instance_init
= vhost_user_blk_pci_instance_init
,
95 .class_init
= vhost_user_blk_pci_class_init
,
98 static void vhost_user_blk_pci_register(void)
100 virtio_pci_types_register(&vhost_user_blk_pci_info
);
103 type_init(vhost_user_blk_pci_register
)