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
 8struct ib_wq *mana_ib_create_wq(struct ib_pd *pd,
 9				struct ib_wq_init_attr *init_attr,
10				struct ib_udata *udata)
11{
12	struct mana_ib_dev *mdev =
13		container_of(pd->device, struct mana_ib_dev, ib_dev);
14	struct mana_ib_create_wq ucmd = {};
15	struct mana_ib_wq *wq;
16	int err;
17
18	if (udata->inlen < sizeof(ucmd))
19		return ERR_PTR(-EINVAL);
20
21	err = ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen));
22	if (err) {
23		ibdev_dbg(&mdev->ib_dev,
24			  "Failed to copy from udata for create wq, %d\n", err);
25		return ERR_PTR(err);
26	}
27
28	wq = kzalloc(sizeof(*wq), GFP_KERNEL);
29	if (!wq)
30		return ERR_PTR(-ENOMEM);
31
32	ibdev_dbg(&mdev->ib_dev, "ucmd wq_buf_addr 0x%llx\n", ucmd.wq_buf_addr);
33
34	err = mana_ib_create_queue(mdev, ucmd.wq_buf_addr, ucmd.wq_buf_size, &wq->queue);
35	if (err) {
36		ibdev_dbg(&mdev->ib_dev,
37			  "Failed to create queue for create wq, %d\n", err);
38		goto err_free_wq;
39	}
40
41	wq->wqe = init_attr->max_wr;
42	wq->wq_buf_size = ucmd.wq_buf_size;
43	wq->rx_object = INVALID_MANA_HANDLE;
44	return &wq->ibwq;
45
46err_free_wq:
47	kfree(wq);
48
49	return ERR_PTR(err);
50}
51
52int mana_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
53		      u32 wq_attr_mask, struct ib_udata *udata)
54{
55	/* modify_wq is not supported by this version of the driver */
56	return -EOPNOTSUPP;
57}
58
59int mana_ib_destroy_wq(struct ib_wq *ibwq, struct ib_udata *udata)
60{
61	struct mana_ib_wq *wq = container_of(ibwq, struct mana_ib_wq, ibwq);
62	struct ib_device *ib_dev = ibwq->device;
63	struct mana_ib_dev *mdev;
64
65	mdev = container_of(ib_dev, struct mana_ib_dev, ib_dev);
66
67	mana_ib_destroy_queue(mdev, &wq->queue);
68
69	kfree(wq);
70
71	return 0;
72}
73
74int mana_ib_create_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_table,
75				 struct ib_rwq_ind_table_init_attr *init_attr,
76				 struct ib_udata *udata)
77{
78	/*
79	 * There is no additional data in ind_table to be maintained by this
80	 * driver, do nothing
81	 */
82	return 0;
83}
84
85int mana_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
86{
87	/*
88	 * There is no additional data in ind_table to be maintained by this
89	 * driver, do nothing
90	 */
91	return 0;
92}