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
35 /* mlx5e global resources should be placed in this file.
36 * Global resources are common to all the netdevices crated on the same nic.
37 */
38
mlx5e_create_tir(struct mlx5_core_dev * mdev,struct mlx5e_tir * tir,u32 * in,int inlen)39 int mlx5e_create_tir(struct mlx5_core_dev *mdev,
40 struct mlx5e_tir *tir, u32 *in, int inlen)
41 {
42 int err;
43
44 err = mlx5_core_create_tir(mdev, in, inlen, &tir->tirn);
45 if (err)
46 return err;
47
48 list_add(&tir->list, &mdev->mlx5e_res.td.tirs_list);
49
50 return 0;
51 }
52
mlx5e_destroy_tir(struct mlx5_core_dev * mdev,struct mlx5e_tir * tir)53 void mlx5e_destroy_tir(struct mlx5_core_dev *mdev,
54 struct mlx5e_tir *tir)
55 {
56 mlx5_core_destroy_tir(mdev, tir->tirn);
57 list_del(&tir->list);
58 }
59
mlx5e_create_mkey(struct mlx5_core_dev * mdev,u32 pdn,struct mlx5_core_mkey * mkey)60 static int mlx5e_create_mkey(struct mlx5_core_dev *mdev, u32 pdn,
61 struct mlx5_core_mkey *mkey)
62 {
63 int inlen = MLX5_ST_SZ_BYTES(create_mkey_in);
64 void *mkc;
65 u32 *in;
66 int err;
67
68 in = kvzalloc(inlen, GFP_KERNEL);
69 if (!in)
70 return -ENOMEM;
71
72 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
73 MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_PA);
74 MLX5_SET(mkc, mkc, lw, 1);
75 MLX5_SET(mkc, mkc, lr, 1);
76
77 MLX5_SET(mkc, mkc, pd, pdn);
78 MLX5_SET(mkc, mkc, length64, 1);
79 MLX5_SET(mkc, mkc, qpn, 0xffffff);
80
81 err = mlx5_core_create_mkey(mdev, mkey, in, inlen);
82
83 kvfree(in);
84 return err;
85 }
86
mlx5e_create_mdev_resources(struct mlx5_core_dev * mdev)87 int mlx5e_create_mdev_resources(struct mlx5_core_dev *mdev)
88 {
89 struct mlx5e_resources *res = &mdev->mlx5e_res;
90 int err;
91
92 err = mlx5_core_alloc_pd(mdev, &res->pdn);
93 if (err) {
94 mlx5_core_err(mdev, "alloc pd failed, %d\n", err);
95 return err;
96 }
97
98 err = mlx5_core_alloc_transport_domain(mdev, &res->td.tdn);
99 if (err) {
100 mlx5_core_err(mdev, "alloc td failed, %d\n", err);
101 goto err_dealloc_pd;
102 }
103
104 err = mlx5e_create_mkey(mdev, res->pdn, &res->mkey);
105 if (err) {
106 mlx5_core_err(mdev, "create mkey failed, %d\n", err);
107 goto err_dealloc_transport_domain;
108 }
109
110 err = mlx5_alloc_bfreg(mdev, &res->bfreg, false, false);
111 if (err) {
112 mlx5_core_err(mdev, "alloc bfreg failed, %d\n", err);
113 goto err_destroy_mkey;
114 }
115
116 INIT_LIST_HEAD(&mdev->mlx5e_res.td.tirs_list);
117
118 return 0;
119
120 err_destroy_mkey:
121 mlx5_core_destroy_mkey(mdev, &res->mkey);
122 err_dealloc_transport_domain:
123 mlx5_core_dealloc_transport_domain(mdev, res->td.tdn);
124 err_dealloc_pd:
125 mlx5_core_dealloc_pd(mdev, res->pdn);
126 return err;
127 }
128
mlx5e_destroy_mdev_resources(struct mlx5_core_dev * mdev)129 void mlx5e_destroy_mdev_resources(struct mlx5_core_dev *mdev)
130 {
131 struct mlx5e_resources *res = &mdev->mlx5e_res;
132
133 mlx5_free_bfreg(mdev, &res->bfreg);
134 mlx5_core_destroy_mkey(mdev, &res->mkey);
135 mlx5_core_dealloc_transport_domain(mdev, res->td.tdn);
136 mlx5_core_dealloc_pd(mdev, res->pdn);
137 memset(res, 0, sizeof(*res));
138 }
139
mlx5e_refresh_tirs(struct mlx5e_priv * priv,bool enable_uc_lb)140 int mlx5e_refresh_tirs(struct mlx5e_priv *priv, bool enable_uc_lb)
141 {
142 struct mlx5_core_dev *mdev = priv->mdev;
143 struct mlx5e_tir *tir;
144 int err = -ENOMEM;
145 u32 tirn = 0;
146 int inlen;
147 void *in;
148
149 inlen = MLX5_ST_SZ_BYTES(modify_tir_in);
150 in = kvzalloc(inlen, GFP_KERNEL);
151 if (!in)
152 goto out;
153
154 if (enable_uc_lb)
155 MLX5_SET(modify_tir_in, in, ctx.self_lb_block,
156 MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST_);
157
158 MLX5_SET(modify_tir_in, in, bitmask.self_lb_en, 1);
159
160 list_for_each_entry(tir, &mdev->mlx5e_res.td.tirs_list, list) {
161 tirn = tir->tirn;
162 err = mlx5_core_modify_tir(mdev, tirn, in, inlen);
163 if (err)
164 goto out;
165 }
166
167 out:
168 kvfree(in);
169 if (err)
170 netdev_err(priv->netdev, "refresh tir(0x%x) failed, %d\n", tirn, err);
171
172 return err;
173 }
174
mlx5e_params_calculate_tx_min_inline(struct mlx5_core_dev * mdev)175 u8 mlx5e_params_calculate_tx_min_inline(struct mlx5_core_dev *mdev)
176 {
177 u8 min_inline_mode;
178
179 mlx5_query_min_inline(mdev, &min_inline_mode);
180 if (min_inline_mode == MLX5_INLINE_MODE_NONE &&
181 !MLX5_CAP_ETH(mdev, wqe_vlan_insert))
182 min_inline_mode = MLX5_INLINE_MODE_L2;
183
184 return min_inline_mode;
185 }
186
