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(error: -EINVAL);
20
21 err = ib_copy_from_udata(dest: &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(error: err);
26 }
27
28 wq = kzalloc(sizeof(*wq), GFP_KERNEL);
29 if (!wq)
30 return ERR_PTR(error: -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, addr: ucmd.wq_buf_addr, size: ucmd.wq_buf_size, queue: &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(objp: wq);
48
49 return ERR_PTR(error: 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, queue: &wq->queue);
68
69 kfree(objp: 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}
93

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