1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2022, Microsoft Corporation. All rights reserved.
4 */
5
6#include "mana_ib.h"
7#include <net/mana/mana_auxiliary.h>
8
9MODULE_DESCRIPTION("Microsoft Azure Network Adapter IB driver");
10MODULE_LICENSE("GPL");
11MODULE_IMPORT_NS(NET_MANA);
12
13static const struct ib_device_ops mana_ib_dev_ops = {
14 .owner = THIS_MODULE,
15 .driver_id = RDMA_DRIVER_MANA,
16 .uverbs_abi_ver = MANA_IB_UVERBS_ABI_VERSION,
17
18 .alloc_pd = mana_ib_alloc_pd,
19 .alloc_ucontext = mana_ib_alloc_ucontext,
20 .create_cq = mana_ib_create_cq,
21 .create_qp = mana_ib_create_qp,
22 .create_rwq_ind_table = mana_ib_create_rwq_ind_table,
23 .create_wq = mana_ib_create_wq,
24 .dealloc_pd = mana_ib_dealloc_pd,
25 .dealloc_ucontext = mana_ib_dealloc_ucontext,
26 .dereg_mr = mana_ib_dereg_mr,
27 .destroy_cq = mana_ib_destroy_cq,
28 .destroy_qp = mana_ib_destroy_qp,
29 .destroy_rwq_ind_table = mana_ib_destroy_rwq_ind_table,
30 .destroy_wq = mana_ib_destroy_wq,
31 .disassociate_ucontext = mana_ib_disassociate_ucontext,
32 .get_port_immutable = mana_ib_get_port_immutable,
33 .mmap = mana_ib_mmap,
34 .modify_qp = mana_ib_modify_qp,
35 .modify_wq = mana_ib_modify_wq,
36 .query_device = mana_ib_query_device,
37 .query_gid = mana_ib_query_gid,
38 .query_port = mana_ib_query_port,
39 .reg_user_mr = mana_ib_reg_user_mr,
40
41 INIT_RDMA_OBJ_SIZE(ib_cq, mana_ib_cq, ibcq),
42 INIT_RDMA_OBJ_SIZE(ib_pd, mana_ib_pd, ibpd),
43 INIT_RDMA_OBJ_SIZE(ib_qp, mana_ib_qp, ibqp),
44 INIT_RDMA_OBJ_SIZE(ib_ucontext, mana_ib_ucontext, ibucontext),
45 INIT_RDMA_OBJ_SIZE(ib_rwq_ind_table, mana_ib_rwq_ind_table,
46 ib_ind_table),
47};
48
49static int mana_ib_probe(struct auxiliary_device *adev,
50 const struct auxiliary_device_id *id)
51{
52 struct mana_adev *madev = container_of(adev, struct mana_adev, adev);
53 struct gdma_dev *mdev = madev->mdev;
54 struct mana_context *mc;
55 struct mana_ib_dev *dev;
56 int ret;
57
58 mc = mdev->driver_data;
59
60 dev = ib_alloc_device(mana_ib_dev, ib_dev);
61 if (!dev)
62 return -ENOMEM;
63
64 ib_set_device_ops(device: &dev->ib_dev, ops: &mana_ib_dev_ops);
65
66 dev->ib_dev.phys_port_cnt = mc->num_ports;
67
68 ibdev_dbg(&dev->ib_dev, "mdev=%p id=%d num_ports=%d\n", mdev,
69 mdev->dev_id.as_uint32, dev->ib_dev.phys_port_cnt);
70
71 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
72
73 /*
74 * num_comp_vectors needs to set to the max MSIX index
75 * when interrupts and event queues are implemented
76 */
77 dev->ib_dev.num_comp_vectors = 1;
78 dev->ib_dev.dev.parent = mdev->gdma_context->dev;
79
80 ret = mana_gd_register_device(gd: &mdev->gdma_context->mana_ib);
81 if (ret) {
82 ibdev_err(ibdev: &dev->ib_dev, format: "Failed to register device, ret %d",
83 ret);
84 goto free_ib_device;
85 }
86 dev->gdma_dev = &mdev->gdma_context->mana_ib;
87
88 ret = mana_ib_gd_query_adapter_caps(mdev: dev);
89 if (ret) {
90 ibdev_err(ibdev: &dev->ib_dev, format: "Failed to query device caps, ret %d",
91 ret);
92 goto deregister_device;
93 }
94
95 ret = ib_register_device(device: &dev->ib_dev, name: "mana_%d",
96 dma_device: mdev->gdma_context->dev);
97 if (ret)
98 goto deregister_device;
99
100 dev_set_drvdata(dev: &adev->dev, data: dev);
101
102 return 0;
103
104deregister_device:
105 mana_gd_deregister_device(gd: dev->gdma_dev);
106free_ib_device:
107 ib_dealloc_device(device: &dev->ib_dev);
108 return ret;
109}
110
111static void mana_ib_remove(struct auxiliary_device *adev)
112{
113 struct mana_ib_dev *dev = dev_get_drvdata(dev: &adev->dev);
114
115 ib_unregister_device(device: &dev->ib_dev);
116
117 mana_gd_deregister_device(gd: dev->gdma_dev);
118
119 ib_dealloc_device(device: &dev->ib_dev);
120}
121
122static const struct auxiliary_device_id mana_id_table[] = {
123 {
124 .name = "mana.rdma",
125 },
126 {},
127};
128
129MODULE_DEVICE_TABLE(auxiliary, mana_id_table);
130
131static struct auxiliary_driver mana_driver = {
132 .name = "rdma",
133 .probe = mana_ib_probe,
134 .remove = mana_ib_remove,
135 .id_table = mana_id_table,
136};
137
138module_auxiliary_driver(mana_driver);
139

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source code of linux/drivers/infiniband/hw/mana/device.c