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
mlx5e_mkey_set_relaxed_ordering(struct mlx5_core_dev * mdev,void * mkc)40 void 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(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
mlx5e_create_mkey(struct mlx5_core_dev * mdev,u32 pdn,u32 * mkey)51 int 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(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(mdev, mkey, in, inlen);
72
73 kvfree(in);
74 return err;
75 }
76
mlx5e_create_mdev_resources(struct mlx5_core_dev * mdev)77 int mlx5e_create_mdev_resources(struct mlx5_core_dev *mdev)
78 {
79 struct mlx5e_hw_objs *res = &mdev->mlx5e_res.hw_objs;
80 int err;
81
82 err = mlx5_core_alloc_pd(mdev, &res->pdn);
83 if (err) {
84 mlx5_core_err(mdev, "alloc pd failed, %d\n", err);
85 return err;
86 }
87
88 err = mlx5_core_alloc_transport_domain(mdev, &res->td.tdn);
89 if (err) {
90 mlx5_core_err(mdev, "alloc td failed, %d\n", err);
91 goto err_dealloc_pd;
92 }
93
94 err = mlx5e_create_mkey(mdev, res->pdn, &res->mkey);
95 if (err) {
96 mlx5_core_err(mdev, "create mkey failed, %d\n", err);
97 goto err_dealloc_transport_domain;
98 }
99
100 err = mlx5_alloc_bfreg(mdev, &res->bfreg, false, false);
101 if (err) {
102 mlx5_core_err(mdev, "alloc bfreg failed, %d\n", err);
103 goto err_destroy_mkey;
104 }
105
106 INIT_LIST_HEAD(&res->td.tirs_list);
107 mutex_init(&res->td.list_lock);
108
109 mdev->mlx5e_res.dek_priv = mlx5_crypto_dek_init(mdev);
110 if (IS_ERR(mdev->mlx5e_res.dek_priv)) {
111 mlx5_core_err(mdev, "crypto dek init failed, %ld\n",
112 PTR_ERR(mdev->mlx5e_res.dek_priv));
113 mdev->mlx5e_res.dek_priv = NULL;
114 }
115
116 return 0;
117
118 err_destroy_mkey:
119 mlx5_core_destroy_mkey(mdev, res->mkey);
120 err_dealloc_transport_domain:
121 mlx5_core_dealloc_transport_domain(mdev, res->td.tdn);
122 err_dealloc_pd:
123 mlx5_core_dealloc_pd(mdev, res->pdn);
124 return err;
125 }
126
mlx5e_destroy_mdev_resources(struct mlx5_core_dev * mdev)127 void mlx5e_destroy_mdev_resources(struct mlx5_core_dev *mdev)
128 {
129 struct mlx5e_hw_objs *res = &mdev->mlx5e_res.hw_objs;
130
131 mlx5_crypto_dek_cleanup(mdev->mlx5e_res.dek_priv);
132 mdev->mlx5e_res.dek_priv = NULL;
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,bool enable_mc_lb)140 int mlx5e_refresh_tirs(struct mlx5e_priv *priv, bool enable_uc_lb,
141 bool enable_mc_lb)
142 {
143 struct mlx5_core_dev *mdev = priv->mdev;
144 struct mlx5e_tir *tir;
145 u8 lb_flags = 0;
146 int err = 0;
147 u32 tirn = 0;
148 int inlen;
149 void *in;
150
151 inlen = MLX5_ST_SZ_BYTES(modify_tir_in);
152 in = kvzalloc(inlen, GFP_KERNEL);
153 if (!in)
154 return -ENOMEM;
155
156 if (enable_uc_lb)
157 lb_flags = MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
158
159 if (enable_mc_lb)
160 lb_flags |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
161
162 if (lb_flags)
163 MLX5_SET(modify_tir_in, in, ctx.self_lb_block, lb_flags);
164
165 MLX5_SET(modify_tir_in, in, bitmask.self_lb_en, 1);
166
167 mutex_lock(&mdev->mlx5e_res.hw_objs.td.list_lock);
168 list_for_each_entry(tir, &mdev->mlx5e_res.hw_objs.td.tirs_list, list) {
169 tirn = tir->tirn;
170 err = mlx5_core_modify_tir(mdev, tirn, in);
171 if (err)
172 break;
173 }
174 mutex_unlock(&mdev->mlx5e_res.hw_objs.td.list_lock);
175
176 kvfree(in);
177 if (err)
178 netdev_err(priv->netdev, "refresh tir(0x%x) failed, %d\n", tirn, err);
179
180 return err;
181 }
182