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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 | ||
a27bd6c7 | 18 | #include "hw/qdev-properties.h" |
2f949398 | 19 | #include "hw/virtio/virtio-scsi.h" |
0b8fa32f | 20 | #include "qemu/module.h" |
2f949398 | 21 | #include "virtio-pci.h" |
db1015e9 | 22 | #include "qom/object.h" |
2f949398 JQ |
23 | |
24 | typedef struct VirtIOSCSIPCI VirtIOSCSIPCI; | |
25 | ||
26 | /* | |
27 | * virtio-scsi-pci: This extends VirtioPCIProxy. | |
28 | */ | |
29 | #define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci-base" | |
8110fa1d EH |
30 | DECLARE_INSTANCE_CHECKER(VirtIOSCSIPCI, VIRTIO_SCSI_PCI, |
31 | TYPE_VIRTIO_SCSI_PCI) | |
2f949398 JQ |
32 | |
33 | struct VirtIOSCSIPCI { | |
34 | VirtIOPCIProxy parent_obj; | |
35 | VirtIOSCSI vdev; | |
36 | }; | |
37 | ||
38 | static Property virtio_scsi_pci_properties[] = { | |
39 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, | |
40 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
41 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, | |
42 | DEV_NVECTORS_UNSPECIFIED), | |
43 | DEFINE_PROP_END_OF_LIST(), | |
44 | }; | |
45 | ||
46 | static void virtio_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) | |
47 | { | |
48 | VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev); | |
49 | DeviceState *vdev = DEVICE(&dev->vdev); | |
2f949398 | 50 | DeviceState *proxy = DEVICE(vpci_dev); |
6a558822 | 51 | VirtIOSCSIConf *conf = &dev->vdev.parent_obj.conf; |
2f949398 JQ |
52 | char *bus_name; |
53 | ||
6a558822 SH |
54 | if (conf->num_queues == VIRTIO_SCSI_AUTO_NUM_QUEUES) { |
55 | conf->num_queues = | |
56 | virtio_pci_optimal_num_queues(VIRTIO_SCSI_VQ_NUM_FIXED); | |
57 | } | |
58 | ||
2f949398 | 59 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { |
6a558822 | 60 | vpci_dev->nvectors = conf->num_queues + VIRTIO_SCSI_VQ_NUM_FIXED + 1; |
2f949398 JQ |
61 | } |
62 | ||
63 | /* | |
64 | * For command line compatibility, this sets the virtio-scsi-device bus | |
65 | * name as before. | |
66 | */ | |
67 | if (proxy->id) { | |
68 | bus_name = g_strdup_printf("%s.0", proxy->id); | |
69 | virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); | |
70 | g_free(bus_name); | |
71 | } | |
72 | ||
99ba777e | 73 | qdev_realize(vdev, BUS(&vpci_dev->bus), errp); |
2f949398 JQ |
74 | } |
75 | ||
76 | static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data) | |
77 | { | |
78 | DeviceClass *dc = DEVICE_CLASS(klass); | |
79 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
80 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); | |
81 | ||
82 | k->realize = virtio_scsi_pci_realize; | |
83 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); | |
4f67d30b | 84 | device_class_set_props(dc, virtio_scsi_pci_properties); |
2f949398 JQ |
85 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
86 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; | |
87 | pcidev_k->revision = 0x00; | |
88 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; | |
89 | } | |
90 | ||
91 | static void virtio_scsi_pci_instance_init(Object *obj) | |
92 | { | |
93 | VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj); | |
94 | ||
95 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), | |
96 | TYPE_VIRTIO_SCSI); | |
97 | } | |
98 | ||
99 | static const VirtioPCIDeviceTypeInfo virtio_scsi_pci_info = { | |
100 | .base_name = TYPE_VIRTIO_SCSI_PCI, | |
101 | .generic_name = "virtio-scsi-pci", | |
102 | .transitional_name = "virtio-scsi-pci-transitional", | |
103 | .non_transitional_name = "virtio-scsi-pci-non-transitional", | |
104 | .instance_size = sizeof(VirtIOSCSIPCI), | |
105 | .instance_init = virtio_scsi_pci_instance_init, | |
106 | .class_init = virtio_scsi_pci_class_init, | |
107 | }; | |
108 | ||
109 | static void virtio_scsi_pci_register(void) | |
110 | { | |
111 | virtio_pci_types_register(&virtio_scsi_pci_info); | |
112 | } | |
113 | ||
114 | type_init(virtio_scsi_pci_register) |