147 lines
3.7 KiB
C
147 lines
3.7 KiB
C
// 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 uverbs_attr_bundle *attrs)
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{
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struct ib_udata *udata = &attrs->driver_udata;
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struct mana_ib_cq *cq = container_of(ibcq, struct mana_ib_cq, ibcq);
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struct mana_ib_create_cq_resp resp = {};
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struct mana_ib_ucontext *mana_ucontext;
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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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bool is_rnic_cq;
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u32 doorbell;
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int err;
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mdev = container_of(ibdev, struct mana_ib_dev, ib_dev);
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cq->comp_vector = attr->comp_vector % ibdev->num_comp_vectors;
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cq->cq_handle = INVALID_MANA_HANDLE;
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if (udata->inlen < offsetof(struct mana_ib_create_cq, flags))
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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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is_rnic_cq = !!(ucmd.flags & MANA_IB_CREATE_RNIC_CQ);
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if (!is_rnic_cq && attr->cqe > mdev->adapter_caps.max_qp_wr) {
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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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err = mana_ib_create_queue(mdev, ucmd.buf_addr, cq->cqe * COMP_ENTRY_SIZE, &cq->queue);
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if (err) {
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ibdev_dbg(ibdev, "Failed to create queue for create cq, %d\n", err);
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return err;
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}
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mana_ucontext = rdma_udata_to_drv_context(udata, struct mana_ib_ucontext,
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ibucontext);
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doorbell = mana_ucontext->doorbell;
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if (is_rnic_cq) {
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err = mana_ib_gd_create_cq(mdev, cq, doorbell);
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if (err) {
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ibdev_dbg(ibdev, "Failed to create RNIC cq, %d\n", err);
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goto err_destroy_queue;
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}
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err = mana_ib_install_cq_cb(mdev, cq);
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if (err) {
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ibdev_dbg(ibdev, "Failed to install cq callback, %d\n", err);
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goto err_destroy_rnic_cq;
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}
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}
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resp.cqid = cq->queue.id;
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err = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen));
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if (err) {
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ibdev_dbg(&mdev->ib_dev, "Failed to copy to udata, %d\n", err);
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goto err_remove_cq_cb;
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}
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return 0;
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err_remove_cq_cb:
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mana_ib_remove_cq_cb(mdev, cq);
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err_destroy_rnic_cq:
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mana_ib_gd_destroy_cq(mdev, cq);
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err_destroy_queue:
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mana_ib_destroy_queue(mdev, &cq->queue);
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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_remove_cq_cb(mdev, cq);
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/* Ignore return code as there is not much we can do about it.
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* The error message is printed inside.
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*/
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mana_ib_gd_destroy_cq(mdev, cq);
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mana_ib_destroy_queue(mdev, &cq->queue);
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return 0;
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}
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static void mana_ib_cq_handler(void *ctx, struct gdma_queue *gdma_cq)
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{
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struct mana_ib_cq *cq = ctx;
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if (cq->ibcq.comp_handler)
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cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context);
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}
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int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq)
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{
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struct gdma_context *gc = mdev_to_gc(mdev);
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struct gdma_queue *gdma_cq;
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if (cq->queue.id >= gc->max_num_cqs)
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return -EINVAL;
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/* Create CQ table entry */
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WARN_ON(gc->cq_table[cq->queue.id]);
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gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL);
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if (!gdma_cq)
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return -ENOMEM;
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gdma_cq->cq.context = cq;
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gdma_cq->type = GDMA_CQ;
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gdma_cq->cq.callback = mana_ib_cq_handler;
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gdma_cq->id = cq->queue.id;
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gc->cq_table[cq->queue.id] = gdma_cq;
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return 0;
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}
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void mana_ib_remove_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq)
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{
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struct gdma_context *gc = mdev_to_gc(mdev);
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if (cq->queue.id >= gc->max_num_cqs || cq->queue.id == INVALID_QUEUE_ID)
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return;
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kfree(gc->cq_table[cq->queue.id]);
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gc->cq_table[cq->queue.id] = NULL;
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}
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