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
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)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
mlx5_wq_cyc_wqe_dump(struct mlx5_wq_cyc * wq,u16 ix,u8 nstrides)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
mlx5_wq_cyc_reset(struct mlx5_wq_cyc * wq)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
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)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
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)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
mlx5_wq_ll_init_list(struct mlx5_wq_ll * wq)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
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)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
mlx5_wq_ll_reset(struct mlx5_wq_ll * wq)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
mlx5_wq_destroy(struct mlx5_wq_ctrl * wq_ctrl)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