1 | /* |
2 | * Virtio scsi 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 or |
12 | * (at your option) any later version. See the COPYING file in the |
13 | * top-level directory. |
14 | */ |
15 | |
16 | #include "qemu/osdep.h" |
17 | |
18 | #include "hw/qdev-properties.h" |
19 | #include "hw/virtio/virtio-scsi.h" |
20 | #include "qemu/module.h" |
21 | #include "virtio-pci.h" |
22 | |
23 | typedef struct VirtIOSCSIPCI VirtIOSCSIPCI; |
24 | |
25 | /* |
26 | * virtio-scsi-pci: This extends VirtioPCIProxy. |
27 | */ |
28 | #define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci-base" |
29 | #define VIRTIO_SCSI_PCI(obj) \ |
30 | OBJECT_CHECK(VirtIOSCSIPCI, (obj), TYPE_VIRTIO_SCSI_PCI) |
31 | |
32 | struct VirtIOSCSIPCI { |
33 | VirtIOPCIProxy parent_obj; |
34 | VirtIOSCSI vdev; |
35 | }; |
36 | |
37 | static Property virtio_scsi_pci_properties[] = { |
38 | DEFINE_PROP_BIT("ioeventfd" , VirtIOPCIProxy, flags, |
39 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
40 | DEFINE_PROP_UINT32("vectors" , VirtIOPCIProxy, nvectors, |
41 | DEV_NVECTORS_UNSPECIFIED), |
42 | DEFINE_PROP_END_OF_LIST(), |
43 | }; |
44 | |
45 | static void virtio_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) |
46 | { |
47 | VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev); |
48 | DeviceState *vdev = DEVICE(&dev->vdev); |
49 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev); |
50 | DeviceState *proxy = DEVICE(vpci_dev); |
51 | char *bus_name; |
52 | |
53 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { |
54 | vpci_dev->nvectors = vs->conf.num_queues + 3; |
55 | } |
56 | |
57 | /* |
58 | * For command line compatibility, this sets the virtio-scsi-device bus |
59 | * name as before. |
60 | */ |
61 | if (proxy->id) { |
62 | bus_name = g_strdup_printf("%s.0" , proxy->id); |
63 | virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); |
64 | g_free(bus_name); |
65 | } |
66 | |
67 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
68 | object_property_set_bool(OBJECT(vdev), true, "realized" , errp); |
69 | } |
70 | |
71 | static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data) |
72 | { |
73 | DeviceClass *dc = DEVICE_CLASS(klass); |
74 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
75 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
76 | |
77 | k->realize = virtio_scsi_pci_realize; |
78 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
79 | dc->props = virtio_scsi_pci_properties; |
80 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
81 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; |
82 | pcidev_k->revision = 0x00; |
83 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; |
84 | } |
85 | |
86 | static void virtio_scsi_pci_instance_init(Object *obj) |
87 | { |
88 | VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj); |
89 | |
90 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), |
91 | TYPE_VIRTIO_SCSI); |
92 | } |
93 | |
94 | static const VirtioPCIDeviceTypeInfo virtio_scsi_pci_info = { |
95 | .base_name = TYPE_VIRTIO_SCSI_PCI, |
96 | .generic_name = "virtio-scsi-pci" , |
97 | .transitional_name = "virtio-scsi-pci-transitional" , |
98 | .non_transitional_name = "virtio-scsi-pci-non-transitional" , |
99 | .instance_size = sizeof(VirtIOSCSIPCI), |
100 | .instance_init = virtio_scsi_pci_instance_init, |
101 | .class_init = virtio_scsi_pci_class_init, |
102 | }; |
103 | |
104 | static void virtio_scsi_pci_register(void) |
105 | { |
106 | virtio_pci_types_register(&virtio_scsi_pci_info); |
107 | } |
108 | |
109 | type_init(virtio_scsi_pci_register) |
110 | |