/*
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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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static u32 wq_get_byte_sz(u8 log_sz, u8 log_stride)
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{
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return ((u32)1 << log_sz) << 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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u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride);
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u8 log_wq_sz = MLX5_GET(wq, wqc, log_wq_sz);
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struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
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int err;
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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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wq->db = wq_ctrl->db.db;
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err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
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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_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc);
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wq->sz = mlx5_wq_cyc_get_size(wq);
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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_cyc_wqe_dump(struct mlx5_wq_cyc *wq, u16 ix, u8 nstrides)
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{
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size_t len;
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void *wqe;
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if (!net_ratelimit())
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return;
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nstrides = max_t(u8, nstrides, 1);
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len = nstrides << wq->fbc.log_stride;
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wqe = mlx5_wq_cyc_get_wqe(wq, ix);
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pr_info("WQE DUMP: WQ size %d WQ cur size %d, WQE index 0x%x, len: %zu\n",
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mlx5_wq_cyc_get_size(wq), wq->cur_sz, ix, len);
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print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1, wqe, len, false);
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}
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void mlx5_wq_cyc_reset(struct mlx5_wq_cyc *wq)
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{
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wq->wqe_ctr = 0;
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wq->cur_sz = 0;
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mlx5_wq_cyc_update_db_record(wq);
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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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u8 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride) + 4;
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u8 log_rq_sz = MLX5_GET(qpc, qpc, log_rq_size);
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u8 log_sq_stride = ilog2(MLX5_SEND_WQE_BB);
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u8 log_sq_sz = MLX5_GET(qpc, qpc, log_sq_size);
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u32 rq_byte_size;
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int err;
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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,
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wq_get_byte_sz(log_rq_sz, log_rq_stride) +
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wq_get_byte_sz(log_sq_sz, log_sq_stride),
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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_init_fbc(wq_ctrl->buf.frags, log_rq_stride, log_rq_sz, &wq->rq.fbc);
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rq_byte_size = wq_get_byte_sz(log_rq_sz, log_rq_stride);
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if (rq_byte_size < PAGE_SIZE) {
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/* SQ starts within the same page of the RQ */
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u16 sq_strides_offset = rq_byte_size / MLX5_SEND_WQE_BB;
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mlx5_init_fbc_offset(wq_ctrl->buf.frags,
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log_sq_stride, log_sq_sz, sq_strides_offset,
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&wq->sq.fbc);
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} else {
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u16 rq_npages = rq_byte_size >> PAGE_SHIFT;
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mlx5_init_fbc(wq_ctrl->buf.frags + rq_npages,
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log_sq_stride, log_sq_sz, &wq->sq.fbc);
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}
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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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/* CQE_STRIDE_128 and CQE_STRIDE_128_PAD both mean 128B stride */
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u8 log_wq_stride = MLX5_GET(cqc, cqc, cqe_sz) == CQE_STRIDE_64 ? 6 : 7;
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u8 log_wq_sz = MLX5_GET(cqc, cqc, log_cq_size);
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int err;
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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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wq->db = wq_ctrl->db.db;
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err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
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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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mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, &wq->fbc);
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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_wq_ll_init_list(struct mlx5_wq_ll *wq)
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{
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struct mlx5_wqe_srq_next_seg *next_seg;
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int i;
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for (i = 0; i < wq->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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}
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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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u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride);
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u8 log_wq_sz = MLX5_GET(wq, wqc, log_wq_sz);
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struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
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int err;
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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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wq->db = wq_ctrl->db.db;
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err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
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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_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc);
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mlx5_wq_ll_init_list(wq);
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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_ll_reset(struct mlx5_wq_ll *wq)
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{
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wq->head = 0;
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wq->wqe_ctr = 0;
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wq->cur_sz = 0;
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mlx5_wq_ll_init_list(wq);
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mlx5_wq_ll_update_db_record(wq);
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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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