diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/wq.c')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/wq.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/wq.c b/drivers/net/ethernet/mellanox/mlx5/core/wq.c new file mode 100644 index 0000000000..3091dd0146 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/wq.c @@ -0,0 +1,261 @@ +/* + * 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" + +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) +{ + u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride); + u8 log_wq_sz = MLX5_GET(wq, wqc, log_wq_sz); + struct mlx5_frag_buf_ctrl *fbc = &wq->fbc; + int err; + + 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; + } + + wq->db = wq_ctrl->db.db; + + err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride), + &wq_ctrl->buf, param->buf_numa_node); + if (err) { + mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err); + goto err_db_free; + } + + mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc); + wq->sz = mlx5_wq_cyc_get_size(wq); + + wq_ctrl->mdev = mdev; + + return 0; + +err_db_free: + mlx5_db_free(mdev, &wq_ctrl->db); + + return err; +} + +void mlx5_wq_cyc_wqe_dump(struct mlx5_wq_cyc *wq, u16 ix, u8 nstrides) +{ + size_t len; + void *wqe; + + if (!net_ratelimit()) + return; + + nstrides = max_t(u8, nstrides, 1); + + len = nstrides << wq->fbc.log_stride; + wqe = mlx5_wq_cyc_get_wqe(wq, ix); + + pr_info("WQE DUMP: WQ size %d WQ cur size %d, WQE index 0x%x, len: %zu\n", + mlx5_wq_cyc_get_size(wq), wq->cur_sz, ix, len); + print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1, wqe, len, false); +} + +void mlx5_wq_cyc_reset(struct mlx5_wq_cyc *wq) +{ + wq->wqe_ctr = 0; + wq->cur_sz = 0; + mlx5_wq_cyc_update_db_record(wq); +} + +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) +{ + u8 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride) + 4; + u8 log_rq_sz = MLX5_GET(qpc, qpc, log_rq_size); + u8 log_sq_stride = ilog2(MLX5_SEND_WQE_BB); + u8 log_sq_sz = MLX5_GET(qpc, qpc, log_sq_size); + + u32 rq_byte_size; + int err; + + + + 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, + wq_get_byte_sz(log_rq_sz, log_rq_stride) + + wq_get_byte_sz(log_sq_sz, log_sq_stride), + &wq_ctrl->buf, param->buf_numa_node); + if (err) { + mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err); + goto err_db_free; + } + + mlx5_init_fbc(wq_ctrl->buf.frags, log_rq_stride, log_rq_sz, &wq->rq.fbc); + + rq_byte_size = wq_get_byte_sz(log_rq_sz, log_rq_stride); + + if (rq_byte_size < PAGE_SIZE) { + /* SQ starts within the same page of the RQ */ + u16 sq_strides_offset = rq_byte_size / MLX5_SEND_WQE_BB; + + mlx5_init_fbc_offset(wq_ctrl->buf.frags, + log_sq_stride, log_sq_sz, sq_strides_offset, + &wq->sq.fbc); + } else { + u16 rq_npages = rq_byte_size >> PAGE_SHIFT; + + mlx5_init_fbc(wq_ctrl->buf.frags + rq_npages, + log_sq_stride, log_sq_sz, &wq->sq.fbc); + } + + 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_wq_ctrl *wq_ctrl) +{ + /* CQE_STRIDE_128 and CQE_STRIDE_128_PAD both mean 128B stride */ + u8 log_wq_stride = MLX5_GET(cqc, cqc, cqe_sz) == CQE_STRIDE_64 ? 6 : 7; + u8 log_wq_sz = MLX5_GET(cqc, cqc, log_cq_size); + int err; + + 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; + } + + wq->db = wq_ctrl->db.db; + + err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride), + &wq_ctrl->buf, + param->buf_numa_node); + if (err) { + mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", + err); + goto err_db_free; + } + + mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, &wq->fbc); + + wq_ctrl->mdev = mdev; + + return 0; + +err_db_free: + mlx5_db_free(mdev, &wq_ctrl->db); + + return err; +} + +static void mlx5_wq_ll_init_list(struct mlx5_wq_ll *wq) +{ + struct mlx5_wqe_srq_next_seg *next_seg; + int i; + + for (i = 0; i < wq->fbc.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; +} + +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) +{ + u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride); + u8 log_wq_sz = MLX5_GET(wq, wqc, log_wq_sz); + struct mlx5_frag_buf_ctrl *fbc = &wq->fbc; + int err; + + 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; + } + + wq->db = wq_ctrl->db.db; + + err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride), + &wq_ctrl->buf, param->buf_numa_node); + if (err) { + mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err); + goto err_db_free; + } + + mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc); + + mlx5_wq_ll_init_list(wq); + wq_ctrl->mdev = mdev; + + return 0; + +err_db_free: + mlx5_db_free(mdev, &wq_ctrl->db); + + return err; +} + +void mlx5_wq_ll_reset(struct mlx5_wq_ll *wq) +{ + wq->head = 0; + wq->wqe_ctr = 0; + wq->cur_sz = 0; + mlx5_wq_ll_init_list(wq); + mlx5_wq_ll_update_db_record(wq); +} + +void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl) +{ + mlx5_frag_buf_free(wq_ctrl->mdev, &wq_ctrl->buf); + mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db); +} + |