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f170c5ef JQ |
1 | /* |
2 | * Vhost user blk PCI Bindings | |
3 | * | |
4 | * Copyright(C) 2017 Intel Corporation. | |
5 | * | |
6 | * Authors: | |
7 | * Changpeng Liu <changpeng.liu@intel.com> | |
8 | * | |
9 | * Largely based on the "vhost-user-scsi.c" and "vhost-scsi.c" implemented by: | |
10 | * Felipe Franciosi <felipe@nutanix.com> | |
11 | * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | |
12 | * Nicholas Bellinger <nab@risingtidesystems.com> | |
13 | * | |
14 | * This work is licensed under the terms of the GNU LGPL, version 2 or later. | |
15 | * See the COPYING.LIB file in the top-level directory. | |
16 | * | |
17 | */ | |
18 | ||
19 | #include "qemu/osdep.h" | |
20 | ||
21 | #include "standard-headers/linux/virtio_pci.h" | |
22 | #include "hw/virtio/virtio.h" | |
23 | #include "hw/virtio/vhost-user-blk.h" | |
24 | #include "hw/pci/pci.h" | |
a27bd6c7 | 25 | #include "hw/qdev-properties.h" |
f170c5ef JQ |
26 | #include "qapi/error.h" |
27 | #include "qemu/error-report.h" | |
0b8fa32f | 28 | #include "qemu/module.h" |
f170c5ef | 29 | #include "virtio-pci.h" |
db1015e9 | 30 | #include "qom/object.h" |
f170c5ef JQ |
31 | |
32 | typedef struct VHostUserBlkPCI VHostUserBlkPCI; | |
33 | ||
34 | /* | |
35 | * vhost-user-blk-pci: This extends VirtioPCIProxy. | |
36 | */ | |
37 | #define TYPE_VHOST_USER_BLK_PCI "vhost-user-blk-pci-base" | |
38 | #define VHOST_USER_BLK_PCI(obj) \ | |
39 | OBJECT_CHECK(VHostUserBlkPCI, (obj), TYPE_VHOST_USER_BLK_PCI) | |
40 | ||
41 | struct VHostUserBlkPCI { | |
42 | VirtIOPCIProxy parent_obj; | |
43 | VHostUserBlk vdev; | |
44 | }; | |
45 | ||
46 | static Property vhost_user_blk_pci_properties[] = { | |
47 | DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0), | |
48 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, | |
49 | DEV_NVECTORS_UNSPECIFIED), | |
50 | DEFINE_PROP_END_OF_LIST(), | |
51 | }; | |
52 | ||
53 | static void vhost_user_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) | |
54 | { | |
55 | VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(vpci_dev); | |
56 | DeviceState *vdev = DEVICE(&dev->vdev); | |
57 | ||
a4eef071 SH |
58 | if (dev->vdev.num_queues == VHOST_USER_BLK_AUTO_NUM_QUEUES) { |
59 | dev->vdev.num_queues = virtio_pci_optimal_num_queues(0); | |
60 | } | |
61 | ||
f170c5ef JQ |
62 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { |
63 | vpci_dev->nvectors = dev->vdev.num_queues + 1; | |
64 | } | |
65 | ||
99ba777e | 66 | qdev_realize(vdev, BUS(&vpci_dev->bus), errp); |
f170c5ef JQ |
67 | } |
68 | ||
69 | static void vhost_user_blk_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 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); | |
4f67d30b | 76 | device_class_set_props(dc, vhost_user_blk_pci_properties); |
f170c5ef JQ |
77 | k->realize = vhost_user_blk_pci_realize; |
78 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
79 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; | |
80 | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; | |
81 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; | |
82 | } | |
83 | ||
84 | static void vhost_user_blk_pci_instance_init(Object *obj) | |
85 | { | |
86 | VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(obj); | |
87 | ||
88 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), | |
89 | TYPE_VHOST_USER_BLK); | |
90 | object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), | |
d2623129 | 91 | "bootindex"); |
f170c5ef JQ |
92 | } |
93 | ||
94 | static const VirtioPCIDeviceTypeInfo vhost_user_blk_pci_info = { | |
95 | .base_name = TYPE_VHOST_USER_BLK_PCI, | |
96 | .generic_name = "vhost-user-blk-pci", | |
97 | .transitional_name = "vhost-user-blk-pci-transitional", | |
98 | .non_transitional_name = "vhost-user-blk-pci-non-transitional", | |
99 | .instance_size = sizeof(VHostUserBlkPCI), | |
100 | .instance_init = vhost_user_blk_pci_instance_init, | |
101 | .class_init = vhost_user_blk_pci_class_init, | |
102 | }; | |
103 | ||
104 | static void vhost_user_blk_pci_register(void) | |
105 | { | |
106 | virtio_pci_types_register(&vhost_user_blk_pci_info); | |
107 | } | |
108 | ||
109 | type_init(vhost_user_blk_pci_register) |