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
9 MODULE_DESCRIPTION("Microsoft Azure Network Adapter IB driver");
10 MODULE_LICENSE("GPL");
11 MODULE_IMPORT_NS(NET_MANA);
12
13 static 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
mana_ib_probe(struct auxiliary_device * adev,const struct auxiliary_device_id * id)49 static 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(&dev->ib_dev, &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->gdma_dev = mdev;
72 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
73
74 /*
75 * num_comp_vectors needs to set to the max MSIX index
76 * when interrupts and event queues are implemented
77 */
78 dev->ib_dev.num_comp_vectors = 1;
79 dev->ib_dev.dev.parent = mdev->gdma_context->dev;
80
81 ret = ib_register_device(&dev->ib_dev, "mana_%d",
82 mdev->gdma_context->dev);
83 if (ret) {
84 ib_dealloc_device(&dev->ib_dev);
85 return ret;
86 }
87
88 dev_set_drvdata(&adev->dev, dev);
89
90 return 0;
91 }
92
mana_ib_remove(struct auxiliary_device * adev)93 static void mana_ib_remove(struct auxiliary_device *adev)
94 {
95 struct mana_ib_dev *dev = dev_get_drvdata(&adev->dev);
96
97 ib_unregister_device(&dev->ib_dev);
98 ib_dealloc_device(&dev->ib_dev);
99 }
100
101 static const struct auxiliary_device_id mana_id_table[] = {
102 {
103 .name = "mana.rdma",
104 },
105 {},
106 };
107
108 MODULE_DEVICE_TABLE(auxiliary, mana_id_table);
109
110 static struct auxiliary_driver mana_driver = {
111 .name = "rdma",
112 .probe = mana_ib_probe,
113 .remove = mana_ib_remove,
114 .id_table = mana_id_table,
115 };
116
117 module_auxiliary_driver(mana_driver);
118