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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;
struct gdma_context *gc;
int err;
mdev = container_of(ibdev, struct mana_ib_dev, ib_dev);
gc = mdev_to_gc(mdev);
if (udata->inlen < sizeof(ucmd))
return -EINVAL;
if (attr->comp_vector > gc->max_num_queues)
return -EINVAL;
cq->comp_vector = attr->comp_vector;
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 > mdev->adapter_caps.max_qp_wr) {
ibdev_dbg(ibdev, "CQE %d exceeding limit\n", attr->cqe);
return -EINVAL;
}
cq->cqe = attr->cqe;
err = mana_ib_create_queue(mdev, ucmd.buf_addr, cq->cqe * COMP_ENTRY_SIZE, &cq->queue);
if (err) {
ibdev_dbg(ibdev, "Failed to create queue for create cq, %d\n", err);
return err;
}
return 0;
}
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;
struct gdma_context *gc;
mdev = container_of(ibdev, struct mana_ib_dev, ib_dev);
gc = mdev_to_gc(mdev);
if (cq->queue.id != INVALID_QUEUE_ID) {
kfree(gc->cq_table[cq->queue.id]);
gc->cq_table[cq->queue.id] = NULL;
}
mana_ib_destroy_queue(mdev, &cq->queue);
return 0;
}
static void mana_ib_cq_handler(void *ctx, struct gdma_queue *gdma_cq)
{
struct mana_ib_cq *cq = ctx;
if (cq->ibcq.comp_handler)
cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context);
}
int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq)
{
struct gdma_context *gc = mdev_to_gc(mdev);
struct gdma_queue *gdma_cq;
/* Create CQ table entry */
WARN_ON(gc->cq_table[cq->queue.id]);
gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL);
if (!gdma_cq)
return -ENOMEM;
gdma_cq->cq.context = cq;
gdma_cq->type = GDMA_CQ;
gdma_cq->cq.callback = mana_ib_cq_handler;
gdma_cq->id = cq->queue.id;
gc->cq_table[cq->queue.id] = gdma_cq;
return 0;
}
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