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693510dd JQ |
1 | /* |
2 | * Vhost user scsi PCI Bindings | |
3 | * | |
4 | * Copyright (c) 2016 Nutanix Inc. All rights reserved. | |
5 | * | |
6 | * Author: | |
7 | * Felipe Franciosi <felipe@nutanix.com> | |
8 | * | |
9 | * This work is largely based on the "vhost-scsi" implementation by: | |
10 | * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | |
11 | * Nicholas Bellinger <nab@risingtidesystems.com> | |
12 | * | |
13 | * This work is licensed under the terms of the GNU LGPL, version 2 or later. | |
14 | * See the COPYING.LIB file in the top-level directory. | |
15 | * | |
16 | */ | |
17 | ||
18 | #include "qemu/osdep.h" | |
19 | ||
20 | #include "standard-headers/linux/virtio_pci.h" | |
21 | #include "hw/virtio/vhost-user-scsi.h" | |
22 | #include "hw/virtio/virtio.h" | |
23 | #include "hw/virtio/virtio-scsi.h" | |
24 | #include "hw/pci/pci.h" | |
a27bd6c7 | 25 | #include "hw/qdev-properties.h" |
693510dd JQ |
26 | #include "qapi/error.h" |
27 | #include "qemu/error-report.h" | |
0b8fa32f | 28 | #include "qemu/module.h" |
693510dd JQ |
29 | #include "hw/pci/msi.h" |
30 | #include "hw/pci/msix.h" | |
31 | #include "hw/loader.h" | |
32 | #include "sysemu/kvm.h" | |
e1b1f534 | 33 | #include "hw/virtio/virtio-pci.h" |
db1015e9 | 34 | #include "qom/object.h" |
693510dd JQ |
35 | |
36 | typedef struct VHostUserSCSIPCI VHostUserSCSIPCI; | |
37 | ||
38 | #define TYPE_VHOST_USER_SCSI_PCI "vhost-user-scsi-pci-base" | |
8110fa1d EH |
39 | DECLARE_INSTANCE_CHECKER(VHostUserSCSIPCI, VHOST_USER_SCSI_PCI, |
40 | TYPE_VHOST_USER_SCSI_PCI) | |
693510dd JQ |
41 | |
42 | struct VHostUserSCSIPCI { | |
43 | VirtIOPCIProxy parent_obj; | |
44 | VHostUserSCSI vdev; | |
45 | }; | |
46 | ||
47 | static Property vhost_user_scsi_pci_properties[] = { | |
48 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, | |
49 | DEV_NVECTORS_UNSPECIFIED), | |
50 | DEFINE_PROP_END_OF_LIST(), | |
51 | }; | |
52 | ||
53 | static void vhost_user_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) | |
54 | { | |
55 | VHostUserSCSIPCI *dev = VHOST_USER_SCSI_PCI(vpci_dev); | |
56 | DeviceState *vdev = DEVICE(&dev->vdev); | |
6a558822 SH |
57 | VirtIOSCSIConf *conf = &dev->vdev.parent_obj.parent_obj.conf; |
58 | ||
59 | if (conf->num_queues == VIRTIO_SCSI_AUTO_NUM_QUEUES) { | |
60 | conf->num_queues = | |
61 | virtio_pci_optimal_num_queues(VIRTIO_SCSI_VQ_NUM_FIXED); | |
62 | } | |
693510dd JQ |
63 | |
64 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { | |
6a558822 | 65 | vpci_dev->nvectors = conf->num_queues + VIRTIO_SCSI_VQ_NUM_FIXED + 1; |
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66 | } |
67 | ||
99ba777e | 68 | qdev_realize(vdev, BUS(&vpci_dev->bus), errp); |
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69 | } |
70 | ||
71 | static void vhost_user_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 | k->realize = vhost_user_scsi_pci_realize; | |
77 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); | |
4f67d30b | 78 | device_class_set_props(dc, vhost_user_scsi_pci_properties); |
693510dd JQ |
79 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
80 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; | |
81 | pcidev_k->revision = 0x00; | |
82 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; | |
83 | } | |
84 | ||
85 | static void vhost_user_scsi_pci_instance_init(Object *obj) | |
86 | { | |
87 | VHostUserSCSIPCI *dev = VHOST_USER_SCSI_PCI(obj); | |
88 | ||
89 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), | |
90 | TYPE_VHOST_USER_SCSI); | |
91 | object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), | |
d2623129 | 92 | "bootindex"); |
693510dd JQ |
93 | } |
94 | ||
95 | static const VirtioPCIDeviceTypeInfo vhost_user_scsi_pci_info = { | |
96 | .base_name = TYPE_VHOST_USER_SCSI_PCI, | |
97 | .generic_name = "vhost-user-scsi-pci", | |
98 | .transitional_name = "vhost-user-scsi-pci-transitional", | |
99 | .non_transitional_name = "vhost-user-scsi-pci-non-transitional", | |
100 | .instance_size = sizeof(VHostUserSCSIPCI), | |
101 | .instance_init = vhost_user_scsi_pci_instance_init, | |
102 | .class_init = vhost_user_scsi_pci_class_init, | |
103 | }; | |
104 | ||
105 | static void vhost_user_scsi_pci_register(void) | |
106 | { | |
107 | virtio_pci_types_register(&vhost_user_scsi_pci_info); | |
108 | } | |
109 | ||
110 | type_init(vhost_user_scsi_pci_register) |