2 * Vhost user scsi PCI Bindings
4 * Copyright (c) 2016 Nutanix Inc. All rights reserved.
7 * Felipe Franciosi <felipe@nutanix.com>
9 * This work is largely based on the "vhost-scsi" implementation by:
10 * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
11 * Nicholas Bellinger <nab@risingtidesystems.com>
13 * This work is licensed under the terms of the GNU LGPL, version 2 or later.
14 * See the COPYING.LIB file in the top-level directory.
18 #include "qemu/osdep.h"
20 #include "standard-headers/linux/virtio_pci.h"
21 #include "hw/virtio/vhost-user-scsi.h"
22 #include "hw/virtio/virtio.h"
23 #include "hw/virtio/virtio-scsi.h"
24 #include "hw/pci/pci.h"
25 #include "qapi/error.h"
26 #include "qemu/error-report.h"
27 #include "hw/pci/msi.h"
28 #include "hw/pci/msix.h"
29 #include "hw/loader.h"
30 #include "sysemu/kvm.h"
31 #include "virtio-pci.h"
33 typedef struct VHostUserSCSIPCI VHostUserSCSIPCI
;
35 #define TYPE_VHOST_USER_SCSI_PCI "vhost-user-scsi-pci-base"
36 #define VHOST_USER_SCSI_PCI(obj) \
37 OBJECT_CHECK(VHostUserSCSIPCI, (obj), TYPE_VHOST_USER_SCSI_PCI)
39 struct VHostUserSCSIPCI
{
40 VirtIOPCIProxy parent_obj
;
44 static Property vhost_user_scsi_pci_properties
[] = {
45 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
,
46 DEV_NVECTORS_UNSPECIFIED
),
47 DEFINE_PROP_END_OF_LIST(),
50 static void vhost_user_scsi_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
52 VHostUserSCSIPCI
*dev
= VHOST_USER_SCSI_PCI(vpci_dev
);
53 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
54 VirtIOSCSICommon
*vs
= VIRTIO_SCSI_COMMON(vdev
);
56 if (vpci_dev
->nvectors
== DEV_NVECTORS_UNSPECIFIED
) {
57 vpci_dev
->nvectors
= vs
->conf
.num_queues
+ 3;
60 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
61 object_property_set_bool(OBJECT(vdev
), true, "realized", errp
);
64 static void vhost_user_scsi_pci_class_init(ObjectClass
*klass
, void *data
)
66 DeviceClass
*dc
= DEVICE_CLASS(klass
);
67 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
68 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
69 k
->realize
= vhost_user_scsi_pci_realize
;
70 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
71 dc
->props
= vhost_user_scsi_pci_properties
;
72 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
73 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_SCSI
;
74 pcidev_k
->revision
= 0x00;
75 pcidev_k
->class_id
= PCI_CLASS_STORAGE_SCSI
;
78 static void vhost_user_scsi_pci_instance_init(Object
*obj
)
80 VHostUserSCSIPCI
*dev
= VHOST_USER_SCSI_PCI(obj
);
82 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
83 TYPE_VHOST_USER_SCSI
);
84 object_property_add_alias(obj
, "bootindex", OBJECT(&dev
->vdev
),
85 "bootindex", &error_abort
);
88 static const VirtioPCIDeviceTypeInfo vhost_user_scsi_pci_info
= {
89 .base_name
= TYPE_VHOST_USER_SCSI_PCI
,
90 .generic_name
= "vhost-user-scsi-pci",
91 .transitional_name
= "vhost-user-scsi-pci-transitional",
92 .non_transitional_name
= "vhost-user-scsi-pci-non-transitional",
93 .instance_size
= sizeof(VHostUserSCSIPCI
),
94 .instance_init
= vhost_user_scsi_pci_instance_init
,
95 .class_init
= vhost_user_scsi_pci_class_init
,
98 static void vhost_user_scsi_pci_register(void)
100 virtio_pci_types_register(&vhost_user_scsi_pci_info
);
103 type_init(vhost_user_scsi_pci_register
)