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