LXR linux/drivers/net/ethernet/mellanox/mlx5/core/en

   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
  39int 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
  53void 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
  60static 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 = mlx5_vzalloc(inlen);
  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, 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
  87int 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_alloc_map_uar(mdev, &res->cq_uar, false);
  93        if (err) {
  94                mlx5_core_err(mdev, "alloc_map uar failed, %d\n", err);
  95                return err;
  96        }
  97
  98        err = mlx5_core_alloc_pd(mdev, &res->pdn);
  99        if (err) {
 100                mlx5_core_err(mdev, "alloc pd failed, %d\n", err);
 101                goto err_unmap_free_uar;
 102        }
 103
 104        err = mlx5_core_alloc_transport_domain(mdev, &res->td.tdn);
 105        if (err) {
 106                mlx5_core_err(mdev, "alloc td failed, %d\n", err);
 107                goto err_dealloc_pd;
 108        }
 109
 110        err = mlx5e_create_mkey(mdev, res->pdn, &res->mkey);
 111        if (err) {
 112                mlx5_core_err(mdev, "create mkey failed, %d\n", err);
 113                goto err_dealloc_transport_domain;
 114        }
 115
 116        INIT_LIST_HEAD(&mdev->mlx5e_res.td.tirs_list);
 117
 118        return 0;
 119
 120err_dealloc_transport_domain:
 121        mlx5_core_dealloc_transport_domain(mdev, res->td.tdn);
 122err_dealloc_pd:
 123        mlx5_core_dealloc_pd(mdev, res->pdn);
 124err_unmap_free_uar:
 125        mlx5_unmap_free_uar(mdev, &res->cq_uar);
 126
 127        return err;
 128}
 129
 130void mlx5e_destroy_mdev_resources(struct mlx5_core_dev *mdev)
 131{
 132        struct mlx5e_resources *res = &mdev->mlx5e_res;
 133
 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        mlx5_unmap_free_uar(mdev, &res->cq_uar);
 138}
 139
 140int mlx5e_refresh_tirs_self_loopback_enable(struct mlx5_core_dev *mdev)
 141{
 142        struct mlx5e_tir *tir;
 143        void *in;
 144        int inlen;
 145        int err = 0;
 146
 147        inlen = MLX5_ST_SZ_BYTES(modify_tir_in);
 148        in = mlx5_vzalloc(inlen);
 149        if (!in)
 150                return -ENOMEM;
 151
 152        MLX5_SET(modify_tir_in, in, bitmask.self_lb_en, 1);
 153
 154        list_for_each_entry(tir, &mdev->mlx5e_res.td.tirs_list, list) {
 155                err = mlx5_core_modify_tir(mdev, tir->tirn, in, inlen);
 156                if (err)
 157                        goto out;
 158        }
 159
 160out:
 161        kvfree(in);
 162
 163        return err;
 164}
 165