1 /* 2 * Copyright (c) 2013-2015, Mellanox Technologies, Ltd. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <linux/mlx5/driver.h> 34 #include "wq.h" 35 #include "mlx5_core.h" 36 37 int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param, 38 void *wqc, struct mlx5_wq_cyc *wq, 39 struct mlx5_wq_ctrl *wq_ctrl) 40 { 41 u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride); 42 u8 log_wq_sz = MLX5_GET(wq, wqc, log_wq_sz); 43 struct mlx5_frag_buf_ctrl *fbc = &wq->fbc; 44 int err; 45 46 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node); 47 if (err) { 48 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err); 49 return err; 50 } 51 52 wq->db = wq_ctrl->db.db; 53 54 err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride), 55 &wq_ctrl->buf, param->buf_numa_node); 56 if (err) { 57 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err); 58 goto err_db_free; 59 } 60 61 mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc); 62 wq->sz = mlx5_wq_cyc_get_size(wq); 63 64 wq_ctrl->mdev = mdev; 65 66 return 0; 67 68 err_db_free: 69 mlx5_db_free(mdev, &wq_ctrl->db); 70 71 return err; 72 } 73 74 void mlx5_wq_cyc_wqe_dump(struct mlx5_wq_cyc *wq, u16 ix, u8 nstrides) 75 { 76 size_t len; 77 void *wqe; 78 79 if (!net_ratelimit()) 80 return; 81 82 nstrides = max_t(u8, nstrides, 1); 83 84 len = nstrides << wq->fbc.log_stride; 85 wqe = mlx5_wq_cyc_get_wqe(wq, ix); 86 87 pr_info("WQE DUMP: WQ size %d WQ cur size %d, WQE index 0x%x, len: %zu\n", 88 mlx5_wq_cyc_get_size(wq), wq->cur_sz, ix, len); 89 print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1, wqe, len, false); 90 } 91 92 void mlx5_wq_cyc_reset(struct mlx5_wq_cyc *wq) 93 { 94 wq->wqe_ctr = 0; 95 wq->cur_sz = 0; 96 mlx5_wq_cyc_update_db_record(wq); 97 } 98 99 int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param, 100 void *qpc, struct mlx5_wq_qp *wq, 101 struct mlx5_wq_ctrl *wq_ctrl) 102 { 103 u8 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride) + 4; 104 u8 log_rq_sz = MLX5_GET(qpc, qpc, log_rq_size); 105 u8 log_sq_stride = ilog2(MLX5_SEND_WQE_BB); 106 u8 log_sq_sz = MLX5_GET(qpc, qpc, log_sq_size); 107 108 u32 rq_byte_size; 109 int err; 110 111 112 113 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node); 114 if (err) { 115 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err); 116 return err; 117 } 118 119 err = mlx5_frag_buf_alloc_node(mdev, 120 wq_get_byte_sz(log_rq_sz, log_rq_stride) + 121 wq_get_byte_sz(log_sq_sz, log_sq_stride), 122 &wq_ctrl->buf, param->buf_numa_node); 123 if (err) { 124 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err); 125 goto err_db_free; 126 } 127 128 mlx5_init_fbc(wq_ctrl->buf.frags, log_rq_stride, log_rq_sz, &wq->rq.fbc); 129 130 rq_byte_size = wq_get_byte_sz(log_rq_sz, log_rq_stride); 131 132 if (rq_byte_size < PAGE_SIZE) { 133 /* SQ starts within the same page of the RQ */ 134 u16 sq_strides_offset = rq_byte_size / MLX5_SEND_WQE_BB; 135 136 mlx5_init_fbc_offset(wq_ctrl->buf.frags, 137 log_sq_stride, log_sq_sz, sq_strides_offset, 138 &wq->sq.fbc); 139 } else { 140 u16 rq_npages = rq_byte_size >> PAGE_SHIFT; 141 142 mlx5_init_fbc(wq_ctrl->buf.frags + rq_npages, 143 log_sq_stride, log_sq_sz, &wq->sq.fbc); 144 } 145 146 wq->rq.db = &wq_ctrl->db.db[MLX5_RCV_DBR]; 147 wq->sq.db = &wq_ctrl->db.db[MLX5_SND_DBR]; 148 149 wq_ctrl->mdev = mdev; 150 151 return 0; 152 153 err_db_free: 154 mlx5_db_free(mdev, &wq_ctrl->db); 155 156 return err; 157 } 158 159 int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param, 160 void *cqc, struct mlx5_cqwq *wq, 161 struct mlx5_wq_ctrl *wq_ctrl) 162 { 163 /* CQE_STRIDE_128 and CQE_STRIDE_128_PAD both mean 128B stride */ 164 u8 log_wq_stride = MLX5_GET(cqc, cqc, cqe_sz) == CQE_STRIDE_64 ? 6 : 7; 165 u8 log_wq_sz = MLX5_GET(cqc, cqc, log_cq_size); 166 int err; 167 168 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node); 169 if (err) { 170 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err); 171 return err; 172 } 173 174 wq->db = wq_ctrl->db.db; 175 176 err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride), 177 &wq_ctrl->buf, 178 param->buf_numa_node); 179 if (err) { 180 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", 181 err); 182 goto err_db_free; 183 } 184 185 mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, &wq->fbc); 186 187 wq_ctrl->mdev = mdev; 188 189 return 0; 190 191 err_db_free: 192 mlx5_db_free(mdev, &wq_ctrl->db); 193 194 return err; 195 } 196 197 static void mlx5_wq_ll_init_list(struct mlx5_wq_ll *wq) 198 { 199 struct mlx5_wqe_srq_next_seg *next_seg; 200 int i; 201 202 for (i = 0; i < wq->fbc.sz_m1; i++) { 203 next_seg = mlx5_wq_ll_get_wqe(wq, i); 204 next_seg->next_wqe_index = cpu_to_be16(i + 1); 205 } 206 next_seg = mlx5_wq_ll_get_wqe(wq, i); 207 wq->tail_next = &next_seg->next_wqe_index; 208 } 209 210 int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param, 211 void *wqc, struct mlx5_wq_ll *wq, 212 struct mlx5_wq_ctrl *wq_ctrl) 213 { 214 u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride); 215 u8 log_wq_sz = MLX5_GET(wq, wqc, log_wq_sz); 216 struct mlx5_frag_buf_ctrl *fbc = &wq->fbc; 217 int err; 218 219 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node); 220 if (err) { 221 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err); 222 return err; 223 } 224 225 wq->db = wq_ctrl->db.db; 226 227 err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride), 228 &wq_ctrl->buf, param->buf_numa_node); 229 if (err) { 230 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err); 231 goto err_db_free; 232 } 233 234 mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc); 235 236 mlx5_wq_ll_init_list(wq); 237 wq_ctrl->mdev = mdev; 238 239 return 0; 240 241 err_db_free: 242 mlx5_db_free(mdev, &wq_ctrl->db); 243 244 return err; 245 } 246 247 void mlx5_wq_ll_reset(struct mlx5_wq_ll *wq) 248 { 249 wq->head = 0; 250 wq->wqe_ctr = 0; 251 wq->cur_sz = 0; 252 mlx5_wq_ll_init_list(wq); 253 mlx5_wq_ll_update_db_record(wq); 254 } 255 256 void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl) 257 { 258 mlx5_frag_buf_free(wq_ctrl->mdev, &wq_ctrl->buf); 259 mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db); 260 } 261 262