| /* |
| * 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); |
| } |
| |
