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2f949398 JQ |
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/virtio/virtio-scsi.h" | |
19 | #include "virtio-pci.h" | |
20 | ||
21 | typedef struct VirtIOSCSIPCI VirtIOSCSIPCI; | |
22 | ||
23 | /* | |
24 | * virtio-scsi-pci: This extends VirtioPCIProxy. | |
25 | */ | |
26 | #define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci-base" | |
27 | #define VIRTIO_SCSI_PCI(obj) \ | |
28 | OBJECT_CHECK(VirtIOSCSIPCI, (obj), TYPE_VIRTIO_SCSI_PCI) | |
29 | ||
30 | struct VirtIOSCSIPCI { | |
31 | VirtIOPCIProxy parent_obj; | |
32 | VirtIOSCSI vdev; | |
33 | }; | |
34 | ||
35 | static Property virtio_scsi_pci_properties[] = { | |
36 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, | |
37 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
38 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, | |
39 | DEV_NVECTORS_UNSPECIFIED), | |
40 | DEFINE_PROP_END_OF_LIST(), | |
41 | }; | |
42 | ||
43 | static void virtio_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) | |
44 | { | |
45 | VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev); | |
46 | DeviceState *vdev = DEVICE(&dev->vdev); | |
47 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev); | |
48 | DeviceState *proxy = DEVICE(vpci_dev); | |
49 | char *bus_name; | |
50 | ||
51 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { | |
52 | vpci_dev->nvectors = vs->conf.num_queues + 3; | |
53 | } | |
54 | ||
55 | /* | |
56 | * For command line compatibility, this sets the virtio-scsi-device bus | |
57 | * name as before. | |
58 | */ | |
59 | if (proxy->id) { | |
60 | bus_name = g_strdup_printf("%s.0", proxy->id); | |
61 | virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); | |
62 | g_free(bus_name); | |
63 | } | |
64 | ||
65 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); | |
66 | object_property_set_bool(OBJECT(vdev), true, "realized", errp); | |
67 | } | |
68 | ||
69 | static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data) | |
70 | { | |
71 | DeviceClass *dc = DEVICE_CLASS(klass); | |
72 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
73 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); | |
74 | ||
75 | k->realize = virtio_scsi_pci_realize; | |
76 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); | |
77 | dc->props = virtio_scsi_pci_properties; | |
78 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
79 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; | |
80 | pcidev_k->revision = 0x00; | |
81 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; | |
82 | } | |
83 | ||
84 | static void virtio_scsi_pci_instance_init(Object *obj) | |
85 | { | |
86 | VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj); | |
87 | ||
88 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), | |
89 | TYPE_VIRTIO_SCSI); | |
90 | } | |
91 | ||
92 | static const VirtioPCIDeviceTypeInfo virtio_scsi_pci_info = { | |
93 | .base_name = TYPE_VIRTIO_SCSI_PCI, | |
94 | .generic_name = "virtio-scsi-pci", | |
95 | .transitional_name = "virtio-scsi-pci-transitional", | |
96 | .non_transitional_name = "virtio-scsi-pci-non-transitional", | |
97 | .instance_size = sizeof(VirtIOSCSIPCI), | |
98 | .instance_init = virtio_scsi_pci_instance_init, | |
99 | .class_init = virtio_scsi_pci_class_init, | |
100 | }; | |
101 | ||
102 | static void virtio_scsi_pci_register(void) | |
103 | { | |
104 | virtio_pci_types_register(&virtio_scsi_pci_info); | |
105 | } | |
106 | ||
107 | type_init(virtio_scsi_pci_register) |