X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fnet%2Fethernet%2Fmellanox%2Fmlx5%2Fcore%2Fwq.c;fp=kernel%2Fdrivers%2Fnet%2Fethernet%2Fmellanox%2Fmlx5%2Fcore%2Fwq.c;h=ce21ee5b23577ee63e8b5679a1fe2204c3ccd895;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hp=0000000000000000000000000000000000000000;hpb=f93b97fd65072de626c074dbe099a1fff05ce060;p=kvmfornfv.git diff --git a/kernel/drivers/net/ethernet/mellanox/mlx5/core/wq.c b/kernel/drivers/net/ethernet/mellanox/mlx5/core/wq.c new file mode 100644 index 000000000..ce21ee5b2 --- /dev/null +++ b/kernel/drivers/net/ethernet/mellanox/mlx5/core/wq.c @@ -0,0 +1,185 @@ +/* + * 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 +#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_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() 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() 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_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param, + void *cqc, struct mlx5_cqwq *wq, + struct mlx5_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; + + err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node); + if (err) { + mlx5_core_warn(mdev, "mlx5_db_alloc() failed, %d\n", err); + return err; + } + + err = mlx5_buf_alloc_node(mdev, mlx5_cqwq_get_byte_size(wq), + &wq_ctrl->buf, param->buf_numa_node); + if (err) { + mlx5_core_warn(mdev, "mlx5_buf_alloc() 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_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() failed, %d\n", err); + return err; + } + + err = mlx5_buf_alloc(mdev, mlx5_wq_ll_get_byte_size(wq), &wq_ctrl->buf); + if (err) { + mlx5_core_warn(mdev, "mlx5_buf_alloc() 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); +}