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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2022, Microsoft Corporation. All rights reserved.
*/
#include "mana_ib.h"
struct ib_wq *mana_ib_create_wq(struct ib_pd *pd,
struct ib_wq_init_attr *init_attr,
struct ib_udata *udata)
{
struct mana_ib_dev *mdev =
container_of(pd->device, struct mana_ib_dev, ib_dev);
struct mana_ib_create_wq ucmd = {};
struct mana_ib_wq *wq;
struct ib_umem *umem;
int err;
if (udata->inlen < sizeof(ucmd))
return ERR_PTR(-EINVAL);
err = ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen));
if (err) {
ibdev_dbg(&mdev->ib_dev,
"Failed to copy from udata for create wq, %d\n", err);
return ERR_PTR(err);
}
wq = kzalloc(sizeof(*wq), GFP_KERNEL);
if (!wq)
return ERR_PTR(-ENOMEM);
ibdev_dbg(&mdev->ib_dev, "ucmd wq_buf_addr 0x%llx\n", ucmd.wq_buf_addr);
umem = ib_umem_get(pd->device, ucmd.wq_buf_addr, ucmd.wq_buf_size,
IB_ACCESS_LOCAL_WRITE);
if (IS_ERR(umem)) {
err = PTR_ERR(umem);
ibdev_dbg(&mdev->ib_dev,
"Failed to get umem for create wq, err %d\n", err);
goto err_free_wq;
}
wq->umem = umem;
wq->wqe = init_attr->max_wr;
wq->wq_buf_size = ucmd.wq_buf_size;
wq->rx_object = INVALID_MANA_HANDLE;
err = mana_ib_gd_create_dma_region(mdev, wq->umem, &wq->gdma_region);
if (err) {
ibdev_dbg(&mdev->ib_dev,
"Failed to create dma region for create wq, %d\n",
err);
goto err_release_umem;
}
ibdev_dbg(&mdev->ib_dev,
"mana_ib_gd_create_dma_region ret %d gdma_region 0x%llx\n",
err, wq->gdma_region);
/* WQ ID is returned at wq_create time, doesn't know the value yet */
return &wq->ibwq;
err_release_umem:
ib_umem_release(umem);
err_free_wq:
kfree(wq);
return ERR_PTR(err);
}
int mana_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
u32 wq_attr_mask, struct ib_udata *udata)
{
/* modify_wq is not supported by this version of the driver */
return -EOPNOTSUPP;
}
int mana_ib_destroy_wq(struct ib_wq *ibwq, struct ib_udata *udata)
{
struct mana_ib_wq *wq = container_of(ibwq, struct mana_ib_wq, ibwq);
struct ib_device *ib_dev = ibwq->device;
struct mana_ib_dev *mdev;
mdev = container_of(ib_dev, struct mana_ib_dev, ib_dev);
mana_ib_gd_destroy_dma_region(mdev, wq->gdma_region);
ib_umem_release(wq->umem);
kfree(wq);
return 0;
}
int mana_ib_create_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_table,
struct ib_rwq_ind_table_init_attr *init_attr,
struct ib_udata *udata)
{
/*
* There is no additional data in ind_table to be maintained by this
* driver, do nothing
*/
return 0;
}
int mana_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
{
/*
* There is no additional data in ind_table to be maintained by this
* driver, do nothing
*/
return 0;
}
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