/*
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* Copyright (c) 2013-2015, Mellanox Technologies, Ltd. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/mlx5/driver.h>
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#include "wq.h"
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#include "mlx5_core.h"
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u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq)
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{
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return (u32)wq->fbc.sz_m1 + 1;
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}
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u32 mlx5_cqwq_get_size(struct mlx5_cqwq *wq)
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{
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return wq->fbc.sz_m1 + 1;
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}
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u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq)
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{
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return (u32)wq->fbc.sz_m1 + 1;
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}
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static u32 mlx5_wq_cyc_get_byte_size(struct mlx5_wq_cyc *wq)
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{
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return mlx5_wq_cyc_get_size(wq) << wq->fbc.log_stride;
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}
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static u32 mlx5_wq_qp_get_byte_size(struct mlx5_wq_qp *wq)
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{
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return mlx5_wq_cyc_get_byte_size(&wq->rq) +
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mlx5_wq_cyc_get_byte_size(&wq->sq);
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}
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static u32 mlx5_cqwq_get_byte_size(struct mlx5_cqwq *wq)
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{
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return mlx5_cqwq_get_size(wq) << wq->fbc.log_stride;
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}
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static u32 mlx5_wq_ll_get_byte_size(struct mlx5_wq_ll *wq)
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{
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return mlx5_wq_ll_get_size(wq) << wq->fbc.log_stride;
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}
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int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
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void *wqc, struct mlx5_wq_cyc *wq,
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struct mlx5_wq_ctrl *wq_ctrl)
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{
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struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
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int err;
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mlx5_fill_fbc(MLX5_GET(wq, wqc, log_wq_stride),
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MLX5_GET(wq, wqc, log_wq_sz),
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fbc);
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wq->sz = wq->fbc.sz_m1 + 1;
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err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
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if (err) {
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mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
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return err;
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}
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err = mlx5_frag_buf_alloc_node(mdev, mlx5_wq_cyc_get_byte_size(wq),
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&wq_ctrl->buf, param->buf_numa_node);
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if (err) {
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mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
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goto err_db_free;
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}
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fbc->frag_buf = wq_ctrl->buf;
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wq->db = wq_ctrl->db.db;
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wq_ctrl->mdev = mdev;
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return 0;
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err_db_free:
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mlx5_db_free(mdev, &wq_ctrl->db);
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return err;
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}
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static void mlx5_qp_set_frag_buf(struct mlx5_frag_buf *buf,
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struct mlx5_wq_qp *qp)
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{
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struct mlx5_frag_buf_ctrl *sq_fbc;
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struct mlx5_frag_buf *rqb, *sqb;
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rqb = &qp->rq.fbc.frag_buf;
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*rqb = *buf;
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rqb->size = mlx5_wq_cyc_get_byte_size(&qp->rq);
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rqb->npages = DIV_ROUND_UP(rqb->size, PAGE_SIZE);
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sq_fbc = &qp->sq.fbc;
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sqb = &sq_fbc->frag_buf;
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*sqb = *buf;
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sqb->size = mlx5_wq_cyc_get_byte_size(&qp->sq);
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sqb->npages = DIV_ROUND_UP(sqb->size, PAGE_SIZE);
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sqb->frags += rqb->npages; /* first part is for the rq */
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if (sq_fbc->strides_offset)
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sqb->frags--;
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}
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int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
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void *qpc, struct mlx5_wq_qp *wq,
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struct mlx5_wq_ctrl *wq_ctrl)
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{
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u16 sq_strides_offset;
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u32 rq_pg_remainder;
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int err;
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mlx5_fill_fbc(MLX5_GET(qpc, qpc, log_rq_stride) + 4,
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MLX5_GET(qpc, qpc, log_rq_size),
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&wq->rq.fbc);
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rq_pg_remainder = mlx5_wq_cyc_get_byte_size(&wq->rq) % PAGE_SIZE;
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sq_strides_offset = rq_pg_remainder / MLX5_SEND_WQE_BB;
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mlx5_fill_fbc_offset(ilog2(MLX5_SEND_WQE_BB),
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MLX5_GET(qpc, qpc, log_sq_size),
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sq_strides_offset,
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&wq->sq.fbc);
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err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
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if (err) {
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mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
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return err;
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}
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err = mlx5_frag_buf_alloc_node(mdev, mlx5_wq_qp_get_byte_size(wq),
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&wq_ctrl->buf, param->buf_numa_node);
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if (err) {
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mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
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goto err_db_free;
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}
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mlx5_qp_set_frag_buf(&wq_ctrl->buf, wq);
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wq->rq.db = &wq_ctrl->db.db[MLX5_RCV_DBR];
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wq->sq.db = &wq_ctrl->db.db[MLX5_SND_DBR];
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wq_ctrl->mdev = mdev;
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return 0;
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err_db_free:
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mlx5_db_free(mdev, &wq_ctrl->db);
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return err;
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}
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int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
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void *cqc, struct mlx5_cqwq *wq,
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struct mlx5_wq_ctrl *wq_ctrl)
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{
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int err;
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mlx5_core_init_cq_frag_buf(&wq->fbc, cqc);
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err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
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if (err) {
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mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
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return err;
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}
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err = mlx5_frag_buf_alloc_node(mdev, mlx5_cqwq_get_byte_size(wq),
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&wq_ctrl->buf,
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param->buf_numa_node);
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if (err) {
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mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n",
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err);
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goto err_db_free;
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}
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wq->fbc.frag_buf = wq_ctrl->buf;
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wq->db = wq_ctrl->db.db;
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wq_ctrl->mdev = mdev;
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return 0;
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err_db_free:
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mlx5_db_free(mdev, &wq_ctrl->db);
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return err;
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}
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int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
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void *wqc, struct mlx5_wq_ll *wq,
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struct mlx5_wq_ctrl *wq_ctrl)
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{
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struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
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struct mlx5_wqe_srq_next_seg *next_seg;
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int err;
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int i;
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mlx5_fill_fbc(MLX5_GET(wq, wqc, log_wq_stride),
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MLX5_GET(wq, wqc, log_wq_sz),
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fbc);
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err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
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if (err) {
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mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
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return err;
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}
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err = mlx5_frag_buf_alloc_node(mdev, mlx5_wq_ll_get_byte_size(wq),
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&wq_ctrl->buf, param->buf_numa_node);
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if (err) {
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mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
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goto err_db_free;
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}
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wq->fbc.frag_buf = wq_ctrl->buf;
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wq->db = wq_ctrl->db.db;
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for (i = 0; i < fbc->sz_m1; i++) {
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next_seg = mlx5_wq_ll_get_wqe(wq, i);
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next_seg->next_wqe_index = cpu_to_be16(i + 1);
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}
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next_seg = mlx5_wq_ll_get_wqe(wq, i);
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wq->tail_next = &next_seg->next_wqe_index;
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wq_ctrl->mdev = mdev;
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return 0;
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err_db_free:
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mlx5_db_free(mdev, &wq_ctrl->db);
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return err;
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}
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void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl)
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{
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mlx5_frag_buf_free(wq_ctrl->mdev, &wq_ctrl->buf);
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mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db);
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}
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