1 | /* |
2 | * Vhost scsi PCI bindings |
3 | * |
4 | * Copyright IBM, Corp. 2011 |
5 | * |
6 | * Authors: |
7 | * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> |
8 | * |
9 | * Changes for QEMU mainline + tcm_vhost kernel upstream: |
10 | * Nicholas Bellinger <nab@risingtidesystems.com> |
11 | * |
12 | * This work is licensed under the terms of the GNU LGPL, version 2 or later. |
13 | * See the COPYING.LIB file in the top-level directory. |
14 | * |
15 | */ |
16 | |
17 | #include "qemu/osdep.h" |
18 | |
19 | #include "standard-headers/linux/virtio_pci.h" |
20 | #include "hw/qdev-properties.h" |
21 | #include "hw/virtio/vhost-scsi.h" |
22 | #include "qapi/error.h" |
23 | #include "qemu/module.h" |
24 | #include "virtio-pci.h" |
25 | |
26 | typedef struct VHostSCSIPCI VHostSCSIPCI; |
27 | |
28 | /* |
29 | * vhost-scsi-pci: This extends VirtioPCIProxy. |
30 | */ |
31 | #define TYPE_VHOST_SCSI_PCI "vhost-scsi-pci-base" |
32 | #define VHOST_SCSI_PCI(obj) \ |
33 | OBJECT_CHECK(VHostSCSIPCI, (obj), TYPE_VHOST_SCSI_PCI) |
34 | |
35 | struct VHostSCSIPCI { |
36 | VirtIOPCIProxy parent_obj; |
37 | VHostSCSI vdev; |
38 | }; |
39 | |
40 | static Property vhost_scsi_pci_properties[] = { |
41 | DEFINE_PROP_UINT32("vectors" , VirtIOPCIProxy, nvectors, |
42 | DEV_NVECTORS_UNSPECIFIED), |
43 | DEFINE_PROP_END_OF_LIST(), |
44 | }; |
45 | |
46 | static void vhost_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) |
47 | { |
48 | VHostSCSIPCI *dev = VHOST_SCSI_PCI(vpci_dev); |
49 | DeviceState *vdev = DEVICE(&dev->vdev); |
50 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev); |
51 | |
52 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { |
53 | vpci_dev->nvectors = vs->conf.num_queues + 3; |
54 | } |
55 | |
56 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
57 | object_property_set_bool(OBJECT(vdev), true, "realized" , errp); |
58 | } |
59 | |
60 | static void vhost_scsi_pci_class_init(ObjectClass *klass, void *data) |
61 | { |
62 | DeviceClass *dc = DEVICE_CLASS(klass); |
63 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
64 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
65 | k->realize = vhost_scsi_pci_realize; |
66 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
67 | dc->props = vhost_scsi_pci_properties; |
68 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
69 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; |
70 | pcidev_k->revision = 0x00; |
71 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; |
72 | } |
73 | |
74 | static void vhost_scsi_pci_instance_init(Object *obj) |
75 | { |
76 | VHostSCSIPCI *dev = VHOST_SCSI_PCI(obj); |
77 | |
78 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), |
79 | TYPE_VHOST_SCSI); |
80 | object_property_add_alias(obj, "bootindex" , OBJECT(&dev->vdev), |
81 | "bootindex" , &error_abort); |
82 | } |
83 | |
84 | static const VirtioPCIDeviceTypeInfo vhost_scsi_pci_info = { |
85 | .base_name = TYPE_VHOST_SCSI_PCI, |
86 | .generic_name = "vhost-scsi-pci" , |
87 | .transitional_name = "vhost-scsi-pci-transitional" , |
88 | .non_transitional_name = "vhost-scsi-pci-non-transitional" , |
89 | .instance_size = sizeof(VHostSCSIPCI), |
90 | .instance_init = vhost_scsi_pci_instance_init, |
91 | .class_init = vhost_scsi_pci_class_init, |
92 | }; |
93 | |
94 | static void vhost_scsi_pci_register(void) |
95 | { |
96 | virtio_pci_types_register(&vhost_scsi_pci_info); |
97 | } |
98 | |
99 | type_init(vhost_scsi_pci_register) |
100 | |