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(&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->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(&mdev->gdma_context->mana_ib);
81	if (ret) {
82		ibdev_err(&dev->ib_dev, "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(dev);
89	if (ret) {
90		ibdev_err(&dev->ib_dev, "Failed to query device caps, ret %d",
91			  ret);
92		goto deregister_device;
93	}
94
95	ret = ib_register_device(&dev->ib_dev, "mana_%d",
96				 mdev->gdma_context->dev);
97	if (ret)
98		goto deregister_device;
99
100	dev_set_drvdata(&adev->dev, dev);
101
102	return 0;
103
104deregister_device:
105	mana_gd_deregister_device(dev->gdma_dev);
106free_ib_device:
107	ib_dealloc_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(&adev->dev);
114
115	ib_unregister_device(&dev->ib_dev);
116
117	mana_gd_deregister_device(dev->gdma_dev);
118
119	ib_dealloc_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