1/*
2 * Copyright (c) 2016, Mellanox Technologies. 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 "en.h"
34#include "lib/crypto.h"
35
36/* mlx5e global resources should be placed in this file.
37 * Global resources are common to all the netdevices created on the same nic.
38 */
39
40void mlx5e_mkey_set_relaxed_ordering(struct mlx5_core_dev *mdev, void *mkc)
41{
42 bool ro_write = MLX5_CAP_GEN(mdev, relaxed_ordering_write);
43 bool ro_read = MLX5_CAP_GEN(mdev, relaxed_ordering_read) ||
44 (pcie_relaxed_ordering_enabled(dev: mdev->pdev) &&
45 MLX5_CAP_GEN(mdev, relaxed_ordering_read_pci_enabled));
46
47 MLX5_SET(mkc, mkc, relaxed_ordering_read, ro_read);
48 MLX5_SET(mkc, mkc, relaxed_ordering_write, ro_write);
49}
50
51int mlx5e_create_mkey(struct mlx5_core_dev *mdev, u32 pdn, u32 *mkey)
52{
53 int inlen = MLX5_ST_SZ_BYTES(create_mkey_in);
54 void *mkc;
55 u32 *in;
56 int err;
57
58 in = kvzalloc(size: inlen, GFP_KERNEL);
59 if (!in)
60 return -ENOMEM;
61
62 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
63 MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_PA);
64 MLX5_SET(mkc, mkc, lw, 1);
65 MLX5_SET(mkc, mkc, lr, 1);
66 mlx5e_mkey_set_relaxed_ordering(mdev, mkc);
67 MLX5_SET(mkc, mkc, pd, pdn);
68 MLX5_SET(mkc, mkc, length64, 1);
69 MLX5_SET(mkc, mkc, qpn, 0xffffff);
70
71 err = mlx5_core_create_mkey(dev: mdev, mkey, in, inlen);
72
73 kvfree(addr: in);
74 return err;
75}
76
77int mlx5e_create_tis(struct mlx5_core_dev *mdev, void *in, u32 *tisn)
78{
79 void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
80
81 MLX5_SET(tisc, tisc, transport_domain, mdev->mlx5e_res.hw_objs.td.tdn);
82
83 if (mlx5_lag_is_lacp_owner(dev: mdev))
84 MLX5_SET(tisc, tisc, strict_lag_tx_port_affinity, 1);
85
86 return mlx5_core_create_tis(dev: mdev, in, tisn);
87}
88
89void mlx5e_destroy_tis(struct mlx5_core_dev *mdev, u32 tisn)
90{
91 mlx5_core_destroy_tis(dev: mdev, tisn);
92}
93
94static void mlx5e_destroy_tises(struct mlx5_core_dev *mdev, u32 tisn[MLX5_MAX_PORTS][MLX5_MAX_NUM_TC])
95{
96 int tc, i;
97
98 for (i = 0; i < mlx5e_get_num_lag_ports(mdev); i++)
99 for (tc = 0; tc < MLX5_MAX_NUM_TC; tc++)
100 mlx5e_destroy_tis(mdev, tisn: tisn[i][tc]);
101}
102
103static bool mlx5_lag_should_assign_affinity(struct mlx5_core_dev *mdev)
104{
105 return MLX5_CAP_GEN(mdev, lag_tx_port_affinity) && mlx5e_get_num_lag_ports(mdev) > 1;
106}
107
108static int mlx5e_create_tises(struct mlx5_core_dev *mdev, u32 tisn[MLX5_MAX_PORTS][MLX5_MAX_NUM_TC])
109{
110 int tc, i;
111 int err;
112
113 for (i = 0; i < mlx5e_get_num_lag_ports(mdev); i++) {
114 for (tc = 0; tc < MLX5_MAX_NUM_TC; tc++) {
115 u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {};
116 void *tisc;
117
118 tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
119
120 MLX5_SET(tisc, tisc, prio, tc << 1);
121
122 if (mlx5_lag_should_assign_affinity(mdev))
123 MLX5_SET(tisc, tisc, lag_tx_port_affinity, i + 1);
124
125 err = mlx5e_create_tis(mdev, in, tisn: &tisn[i][tc]);
126 if (err)
127 goto err_close_tises;
128 }
129 }
130
131 return 0;
132
133err_close_tises:
134 for (; i >= 0; i--) {
135 for (tc--; tc >= 0; tc--)
136 mlx5e_destroy_tis(mdev, tisn: tisn[i][tc]);
137 tc = MLX5_MAX_NUM_TC;
138 }
139
140 return err;
141}
142
143int mlx5e_create_mdev_resources(struct mlx5_core_dev *mdev, bool create_tises)
144{
145 struct mlx5e_hw_objs *res = &mdev->mlx5e_res.hw_objs;
146 int err;
147
148 err = mlx5_core_alloc_pd(dev: mdev, pdn: &res->pdn);
149 if (err) {
150 mlx5_core_err(mdev, "alloc pd failed, %d\n", err);
151 return err;
152 }
153
154 err = mlx5_core_alloc_transport_domain(dev: mdev, tdn: &res->td.tdn);
155 if (err) {
156 mlx5_core_err(mdev, "alloc td failed, %d\n", err);
157 goto err_dealloc_pd;
158 }
159
160 err = mlx5e_create_mkey(mdev, pdn: res->pdn, mkey: &res->mkey);
161 if (err) {
162 mlx5_core_err(mdev, "create mkey failed, %d\n", err);
163 goto err_dealloc_transport_domain;
164 }
165
166 err = mlx5_alloc_bfreg(mdev, bfreg: &res->bfreg, map_wc: false, fast_path: false);
167 if (err) {
168 mlx5_core_err(mdev, "alloc bfreg failed, %d\n", err);
169 goto err_destroy_mkey;
170 }
171
172 if (create_tises) {
173 err = mlx5e_create_tises(mdev, tisn: res->tisn);
174 if (err) {
175 mlx5_core_err(mdev, "alloc tises failed, %d\n", err);
176 goto err_destroy_bfreg;
177 }
178 res->tisn_valid = true;
179 }
180
181 INIT_LIST_HEAD(list: &res->td.tirs_list);
182 mutex_init(&res->td.list_lock);
183
184 mdev->mlx5e_res.dek_priv = mlx5_crypto_dek_init(mdev);
185 if (IS_ERR(ptr: mdev->mlx5e_res.dek_priv)) {
186 mlx5_core_err(mdev, "crypto dek init failed, %ld\n",
187 PTR_ERR(mdev->mlx5e_res.dek_priv));
188 mdev->mlx5e_res.dek_priv = NULL;
189 }
190
191 return 0;
192
193err_destroy_bfreg:
194 mlx5_free_bfreg(mdev, bfreg: &res->bfreg);
195err_destroy_mkey:
196 mlx5_core_destroy_mkey(dev: mdev, mkey: res->mkey);
197err_dealloc_transport_domain:
198 mlx5_core_dealloc_transport_domain(dev: mdev, tdn: res->td.tdn);
199err_dealloc_pd:
200 mlx5_core_dealloc_pd(dev: mdev, pdn: res->pdn);
201 return err;
202}
203
204void mlx5e_destroy_mdev_resources(struct mlx5_core_dev *mdev)
205{
206 struct mlx5e_hw_objs *res = &mdev->mlx5e_res.hw_objs;
207
208 mlx5_crypto_dek_cleanup(dek_priv: mdev->mlx5e_res.dek_priv);
209 mdev->mlx5e_res.dek_priv = NULL;
210 if (res->tisn_valid)
211 mlx5e_destroy_tises(mdev, tisn: res->tisn);
212 mlx5_free_bfreg(mdev, bfreg: &res->bfreg);
213 mlx5_core_destroy_mkey(dev: mdev, mkey: res->mkey);
214 mlx5_core_dealloc_transport_domain(dev: mdev, tdn: res->td.tdn);
215 mlx5_core_dealloc_pd(dev: mdev, pdn: res->pdn);
216 memset(res, 0, sizeof(*res));
217}
218
219int mlx5e_refresh_tirs(struct mlx5e_priv *priv, bool enable_uc_lb,
220 bool enable_mc_lb)
221{
222 struct mlx5_core_dev *mdev = priv->mdev;
223 struct mlx5e_tir *tir;
224 u8 lb_flags = 0;
225 int err = 0;
226 u32 tirn = 0;
227 int inlen;
228 void *in;
229
230 inlen = MLX5_ST_SZ_BYTES(modify_tir_in);
231 in = kvzalloc(size: inlen, GFP_KERNEL);
232 if (!in)
233 return -ENOMEM;
234
235 if (enable_uc_lb)
236 lb_flags = MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
237
238 if (enable_mc_lb)
239 lb_flags |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
240
241 if (lb_flags)
242 MLX5_SET(modify_tir_in, in, ctx.self_lb_block, lb_flags);
243
244 MLX5_SET(modify_tir_in, in, bitmask.self_lb_en, 1);
245
246 mutex_lock(&mdev->mlx5e_res.hw_objs.td.list_lock);
247 list_for_each_entry(tir, &mdev->mlx5e_res.hw_objs.td.tirs_list, list) {
248 tirn = tir->tirn;
249 err = mlx5_core_modify_tir(dev: mdev, tirn, in);
250 if (err)
251 break;
252 }
253 mutex_unlock(lock: &mdev->mlx5e_res.hw_objs.td.list_lock);
254
255 kvfree(addr: in);
256 if (err)
257 netdev_err(dev: priv->netdev, format: "refresh tir(0x%x) failed, %d\n", tirn, err);
258
259 return err;
260}
261

source code of linux/drivers/net/ethernet/mellanox/mlx5/core/en_common.c