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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2022, Microsoft Corporation. All rights reserved.
*/
#include "mana_ib.h"
int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
struct ib_udata *udata)
{
struct mana_ib_cq *cq = container_of(ibcq, struct mana_ib_cq, ibcq);
struct ib_device *ibdev = ibcq->device;
struct mana_ib_create_cq ucmd = {};
struct mana_ib_dev *mdev;
int err;
mdev = container_of(ibdev, struct mana_ib_dev, ib_dev);
if (udata->inlen < sizeof(ucmd))
return -EINVAL;
err = ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen));
if (err) {
ibdev_dbg(ibdev,
"Failed to copy from udata for create cq, %d\n", err);
return err;
}
if (attr->cqe > MAX_SEND_BUFFERS_PER_QUEUE) {
ibdev_dbg(ibdev, "CQE %d exceeding limit\n", attr->cqe);
return -EINVAL;
}
cq->cqe = attr->cqe;
cq->umem = ib_umem_get(ibdev, ucmd.buf_addr, cq->cqe * COMP_ENTRY_SIZE,
IB_ACCESS_LOCAL_WRITE);
if (IS_ERR(cq->umem)) {
err = PTR_ERR(cq->umem);
ibdev_dbg(ibdev, "Failed to get umem for create cq, err %d\n",
err);
return err;
}
err = mana_ib_gd_create_dma_region(mdev, cq->umem, &cq->gdma_region);
if (err) {
ibdev_dbg(ibdev,
"Failed to create dma region for create cq, %d\n",
err);
goto err_release_umem;
}
ibdev_dbg(ibdev,
"mana_ib_gd_create_dma_region ret %d gdma_region 0x%llx\n",
err, cq->gdma_region);
/*
* The CQ ID is not known at this time. The ID is generated at create_qp
*/
return 0;
err_release_umem:
ib_umem_release(cq->umem);
return err;
}
int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata)
{
struct mana_ib_cq *cq = container_of(ibcq, struct mana_ib_cq, ibcq);
struct ib_device *ibdev = ibcq->device;
struct mana_ib_dev *mdev;
mdev = container_of(ibdev, struct mana_ib_dev, ib_dev);
mana_ib_gd_destroy_dma_region(mdev, cq->gdma_region);
ib_umem_release(cq->umem);
return 0;
}
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