/*
* Copyright (c) 2013-2015, Mellanox Technologies, Ltd. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/mlx5/driver.h>
#include "wq.h"
#include "mlx5_core.h"
u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq)
{
return (u32)wq->sz_m1 + 1;
}
u32 mlx5_cqwq_get_size(struct mlx5_cqwq *wq)
{
return wq->sz_m1 + 1;
}
u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq)
{
return (u32)wq->sz_m1 + 1;
}
static u32 mlx5_wq_cyc_get_byte_size(struct mlx5_wq_cyc *wq)
{
return mlx5_wq_cyc_get_size(wq) << wq->log_stride;
}
static u32 mlx5_wq_qp_get_byte_size(struct mlx5_wq_qp *wq)
{
return mlx5_wq_cyc_get_byte_size(&wq->rq) +
mlx5_wq_cyc_get_byte_size(&wq->sq);
}
static u32 mlx5_cqwq_get_byte_size(struct mlx5_cqwq *wq)
{
return mlx5_cqwq_get_size(wq) << wq->log_stride;
}
static u32 mlx5_wq_ll_get_byte_size(struct mlx5_wq_ll *wq)
{
return mlx5_wq_ll_get_size(wq) << wq->log_stride;
}
int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
void *wqc, struct mlx5_wq_cyc *wq,
struct mlx5_wq_ctrl *wq_ctrl)
{
int err;
wq->log_stride = MLX5_GET(wq, wqc, log_wq_stride);
wq->sz_m1 = (1 << MLX5_GET(wq, wqc, log_wq_sz)) - 1;
err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
if (err) {
mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
return err;
}
err = mlx5_buf_alloc_node(mdev, mlx5_wq_cyc_get_byte_size(wq),
&wq_ctrl->buf, param->buf_numa_node);
if (err) {
mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err);
goto err_db_free;
}
wq->buf = wq_ctrl->buf.direct.buf;
wq->db = wq_ctrl->db.db;
wq_ctrl->mdev = mdev;
return 0;
err_db_free:
mlx5_db_free(mdev, &wq_ctrl->db);
return err;
}
int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
void *qpc, struct mlx5_wq_qp *wq,
struct mlx5_wq_ctrl *wq_ctrl)
{
int err;
wq->rq.log_stride = MLX5_GET(qpc, qpc, log_rq_stride) + 4;
wq->rq.sz_m1 = (1 << MLX5_GET(qpc, qpc, log_rq_size)) - 1;
wq->sq.log_stride = ilog2(MLX5_SEND_WQE_BB);
wq->sq.sz_m1 = (1 << MLX5_GET(qpc, qpc, log_sq_size)) - 1;
err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
if (err) {
mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
return err;
}
err = mlx5_buf_alloc_node(mdev, mlx5_wq_qp_get_byte_size(wq),
&wq_ctrl->buf, param->buf_numa_node);
if (err) {
mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err);
goto err_db_free;
}
wq->rq.buf = wq_ctrl->buf.direct.buf;
wq->sq.buf = wq->rq.buf + mlx5_wq_cyc_get_byte_size(&wq->rq);
wq->rq.db = &wq_ctrl->db.db[MLX5_RCV_DBR];
wq->sq.db = &wq_ctrl->db.db[MLX5_SND_DBR];
wq_ctrl->mdev = mdev;
return 0;
err_db_free:
mlx5_db_free(mdev, &wq_ctrl->db);
return err;
}
int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
void *cqc, struct mlx5_cqwq *wq,
struct mlx5_frag_wq_ctrl *wq_ctrl)
{
int err;
wq->log_stride = 6 + MLX5_GET(cqc, cqc, cqe_sz);
wq->log_sz = MLX5_GET(cqc, cqc, log_cq_size);
wq->sz_m1 = (1 << wq->log_sz) - 1;
wq->log_frag_strides = PAGE_SHIFT - wq->log_stride;
wq->frag_sz_m1 = (1 << wq->log_frag_strides) - 1;
err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
if (err) {
mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
return err;
}
err = mlx5_frag_buf_alloc_node(mdev, mlx5_cqwq_get_byte_size(wq),
&wq_ctrl->frag_buf,
param->buf_numa_node);
if (err) {
mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n",
err);
goto err_db_free;
}
wq->frag_buf = wq_ctrl->frag_buf;
wq->db = wq_ctrl->db.db;
wq_ctrl->mdev = mdev;
return 0;
err_db_free:
mlx5_db_free(mdev, &wq_ctrl->db);
return err;
}
int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
void *wqc, struct mlx5_wq_ll *wq,
struct mlx5_wq_ctrl *wq_ctrl)
{
struct mlx5_wqe_srq_next_seg *next_seg;
int err;
int i;
wq->log_stride = MLX5_GET(wq, wqc, log_wq_stride);
wq->sz_m1 = (1 << MLX5_GET(wq, wqc, log_wq_sz)) - 1;
err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
if (err) {
mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
return err;
}
err = mlx5_buf_alloc_node(mdev, mlx5_wq_ll_get_byte_size(wq),
&wq_ctrl->buf, param->buf_numa_node);
if (err) {
mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err);
goto err_db_free;
}
wq->buf = wq_ctrl->buf.direct.buf;
wq->db = wq_ctrl->db.db;
for (i = 0; i < wq->sz_m1; i++) {
next_seg = mlx5_wq_ll_get_wqe(wq, i);
next_seg->next_wqe_index = cpu_to_be16(i + 1);
}
next_seg = mlx5_wq_ll_get_wqe(wq, i);
wq->tail_next = &next_seg->next_wqe_index;
wq_ctrl->mdev = mdev;
return 0;
err_db_free:
mlx5_db_free(mdev, &wq_ctrl->db);
return err;
}
void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl)
{
mlx5_buf_free(wq_ctrl->mdev, &wq_ctrl->buf);
mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db);
}
void mlx5_cqwq_destroy(struct mlx5_frag_wq_ctrl *wq_ctrl)
{
mlx5_frag_buf_free(wq_ctrl->mdev, &wq_ctrl->frag_buf);
mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db);
}
