/* * 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" static u32 wq_get_byte_sz(u8 log_sz, u8 log_stride) { return ((u32)1 << log_sz) << 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) { 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: %ld\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); } 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; } 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; struct mlx5_wqe_srq_next_seg *next_seg; int err; int i; 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); for (i = 0; i < 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; 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_frag_buf_free(wq_ctrl->mdev, &wq_ctrl->buf); mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db); }