drivers/net/ethernet/mellanox/mlx5/core/en_common.c

   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
  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
  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
  60 static int mlx5e_create_mkey(struct mlx5_core_dev *mdev, u32 pdn,
  61                              struct mlx5_core_mkey *mkey)
  62 {
  63         struct mlx5_create_mkey_mbox_in *in;
  64         int err;
  65
  66         in = mlx5_vzalloc(sizeof(*in));
  67         if (!in)
  68                 return -ENOMEM;
  69
  70         in->seg.flags = MLX5_PERM_LOCAL_WRITE |
  71                         MLX5_PERM_LOCAL_READ  |
  72                         MLX5_ACCESS_MODE_PA;
  73         in->seg.flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64);
  74         in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
  75
  76         err = mlx5_core_create_mkey(mdev, mkey, in, sizeof(*in), NULL, NULL,
  77                                     NULL);
  78
  79         kvfree(in);
  80
  81         return err;
  82 }
  83
  84 int mlx5e_create_mdev_resources(struct mlx5_core_dev *mdev)
  85 {
  86         struct mlx5e_resources *res = &mdev->mlx5e_res;
  87         int err;
  88
  89         err = mlx5_alloc_map_uar(mdev, &res->cq_uar, false);
  90         if (err) {
  91                 mlx5_core_err(mdev, "alloc_map uar failed, %d\n", err);
  92                 return err;
  93         }
  94
  95         err = mlx5_core_alloc_pd(mdev, &res->pdn);
  96         if (err) {
  97                 mlx5_core_err(mdev, "alloc pd failed, %d\n", err);
  98                 goto err_unmap_free_uar;
  99         }
 100
 101         err = mlx5_core_alloc_transport_domain(mdev, &res->td.tdn);
 102         if (err) {
 103                 mlx5_core_err(mdev, "alloc td failed, %d\n", err);
 104                 goto err_dealloc_pd;
 105         }
 106
 107         err = mlx5e_create_mkey(mdev, res->pdn, &res->mkey);
 108         if (err) {
 109                 mlx5_core_err(mdev, "create mkey failed, %d\n", err);
 110                 goto err_dealloc_transport_domain;
 111         }
 112
 113         INIT_LIST_HEAD(&mdev->mlx5e_res.td.tirs_list);
 114
 115         return 0;
 116
 117 err_dealloc_transport_domain:
 118         mlx5_core_dealloc_transport_domain(mdev, res->td.tdn);
 119 err_dealloc_pd:
 120         mlx5_core_dealloc_pd(mdev, res->pdn);
 121 err_unmap_free_uar:
 122         mlx5_unmap_free_uar(mdev, &res->cq_uar);
 123
 124         return err;
 125 }
 126
 127 void mlx5e_destroy_mdev_resources(struct mlx5_core_dev *mdev)
 128 {
 129         struct mlx5e_resources *res = &mdev->mlx5e_res;
 130
 131         mlx5_core_destroy_mkey(mdev, &res->mkey);
 132         mlx5_core_dealloc_transport_domain(mdev, res->td.tdn);
 133         mlx5_core_dealloc_pd(mdev, res->pdn);
 134         mlx5_unmap_free_uar(mdev, &res->cq_uar);
 135 }
 136
 137 int mlx5e_refresh_tirs_self_loopback_enable(struct mlx5_core_dev *mdev)
 138 {
 139         struct mlx5e_tir *tir;
 140         void *in;
 141         int inlen;
 142         int err = 0;
 143
 144         inlen = MLX5_ST_SZ_BYTES(modify_tir_in);
 145         in = mlx5_vzalloc(inlen);
 146         if (!in)
 147                 return -ENOMEM;
 148
 149         MLX5_SET(modify_tir_in, in, bitmask.self_lb_en, 1);
 150
 151         list_for_each_entry(tir, &mdev->mlx5e_res.td.tirs_list, list) {
 152                 err = mlx5_core_modify_tir(mdev, tir->tirn, in, inlen);
 153                 if (err)
 154                         goto out;
 155         }
 156
 157 out:
 158         kvfree(in);
 159
 160         return err;
 161 }