linux/drivers/infiniband/hw/mlx5/ib_rep.c
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   1// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2/*
   3 * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
   4 */
   5
   6#include "ib_rep.h"
   7#include "srq.h"
   8
   9static const struct mlx5_ib_profile rep_profile = {
  10        STAGE_CREATE(MLX5_IB_STAGE_INIT,
  11                     mlx5_ib_stage_init_init,
  12                     mlx5_ib_stage_init_cleanup),
  13        STAGE_CREATE(MLX5_IB_STAGE_FLOW_DB,
  14                     mlx5_ib_stage_rep_flow_db_init,
  15                     NULL),
  16        STAGE_CREATE(MLX5_IB_STAGE_CAPS,
  17                     mlx5_ib_stage_caps_init,
  18                     NULL),
  19        STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB,
  20                     mlx5_ib_stage_rep_non_default_cb,
  21                     NULL),
  22        STAGE_CREATE(MLX5_IB_STAGE_ROCE,
  23                     mlx5_ib_stage_rep_roce_init,
  24                     mlx5_ib_stage_rep_roce_cleanup),
  25        STAGE_CREATE(MLX5_IB_STAGE_SRQ,
  26                     mlx5_init_srq_table,
  27                     mlx5_cleanup_srq_table),
  28        STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES,
  29                     mlx5_ib_stage_dev_res_init,
  30                     mlx5_ib_stage_dev_res_cleanup),
  31        STAGE_CREATE(MLX5_IB_STAGE_COUNTERS,
  32                     mlx5_ib_stage_counters_init,
  33                     mlx5_ib_stage_counters_cleanup),
  34        STAGE_CREATE(MLX5_IB_STAGE_BFREG,
  35                     mlx5_ib_stage_bfrag_init,
  36                     mlx5_ib_stage_bfrag_cleanup),
  37        STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR,
  38                     NULL,
  39                     mlx5_ib_stage_pre_ib_reg_umr_cleanup),
  40        STAGE_CREATE(MLX5_IB_STAGE_IB_REG,
  41                     mlx5_ib_stage_ib_reg_init,
  42                     mlx5_ib_stage_ib_reg_cleanup),
  43        STAGE_CREATE(MLX5_IB_STAGE_POST_IB_REG_UMR,
  44                     mlx5_ib_stage_post_ib_reg_umr_init,
  45                     NULL),
  46};
  47
  48static int
  49mlx5_ib_nic_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
  50{
  51        struct mlx5_ib_dev *ibdev;
  52
  53        ibdev = mlx5_ib_rep_to_dev(rep);
  54        if (!__mlx5_ib_add(ibdev, ibdev->profile))
  55                return -EINVAL;
  56        return 0;
  57}
  58
  59static void
  60mlx5_ib_nic_rep_unload(struct mlx5_eswitch_rep *rep)
  61{
  62        struct mlx5_ib_dev *ibdev;
  63
  64        ibdev = mlx5_ib_rep_to_dev(rep);
  65        __mlx5_ib_remove(ibdev, ibdev->profile, MLX5_IB_STAGE_MAX);
  66}
  67
  68static int
  69mlx5_ib_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
  70{
  71        struct mlx5_ib_dev *ibdev;
  72
  73        ibdev = ib_alloc_device(mlx5_ib_dev, ib_dev);
  74        if (!ibdev)
  75                return -ENOMEM;
  76
  77        ibdev->rep = rep;
  78        ibdev->mdev = dev;
  79        ibdev->num_ports = max(MLX5_CAP_GEN(dev, num_ports),
  80                               MLX5_CAP_GEN(dev, num_vhca_ports));
  81        if (!__mlx5_ib_add(ibdev, &rep_profile))
  82                return -EINVAL;
  83
  84        rep->rep_if[REP_IB].priv = ibdev;
  85
  86        return 0;
  87}
  88
  89static void
  90mlx5_ib_vport_rep_unload(struct mlx5_eswitch_rep *rep)
  91{
  92        struct mlx5_ib_dev *dev;
  93
  94        if (!rep->rep_if[REP_IB].priv)
  95                return;
  96
  97        dev = mlx5_ib_rep_to_dev(rep);
  98        __mlx5_ib_remove(dev, dev->profile, MLX5_IB_STAGE_MAX);
  99        rep->rep_if[REP_IB].priv = NULL;
 100        ib_dealloc_device(&dev->ib_dev);
 101}
 102
 103static void *mlx5_ib_vport_get_proto_dev(struct mlx5_eswitch_rep *rep)
 104{
 105        return mlx5_ib_rep_to_dev(rep);
 106}
 107
 108static void mlx5_ib_rep_register_vf_vports(struct mlx5_ib_dev *dev)
 109{
 110        struct mlx5_eswitch *esw   = dev->mdev->priv.eswitch;
 111        int total_vfs = MLX5_TOTAL_VPORTS(dev->mdev);
 112        int vport;
 113
 114        for (vport = 1; vport < total_vfs; vport++) {
 115                struct mlx5_eswitch_rep_if rep_if = {};
 116
 117                rep_if.load = mlx5_ib_vport_rep_load;
 118                rep_if.unload = mlx5_ib_vport_rep_unload;
 119                rep_if.get_proto_dev = mlx5_ib_vport_get_proto_dev;
 120                mlx5_eswitch_register_vport_rep(esw, vport, &rep_if, REP_IB);
 121        }
 122}
 123
 124static void mlx5_ib_rep_unregister_vf_vports(struct mlx5_ib_dev *dev)
 125{
 126        struct mlx5_eswitch *esw   = dev->mdev->priv.eswitch;
 127        int total_vfs = MLX5_TOTAL_VPORTS(dev->mdev);
 128        int vport;
 129
 130        for (vport = 1; vport < total_vfs; vport++)
 131                mlx5_eswitch_unregister_vport_rep(esw, vport, REP_IB);
 132}
 133
 134void mlx5_ib_register_vport_reps(struct mlx5_ib_dev *dev)
 135{
 136        struct mlx5_eswitch *esw = dev->mdev->priv.eswitch;
 137        struct mlx5_eswitch_rep_if rep_if = {};
 138
 139        rep_if.load = mlx5_ib_nic_rep_load;
 140        rep_if.unload = mlx5_ib_nic_rep_unload;
 141        rep_if.get_proto_dev = mlx5_ib_vport_get_proto_dev;
 142        rep_if.priv = dev;
 143
 144        mlx5_eswitch_register_vport_rep(esw, 0, &rep_if, REP_IB);
 145
 146        mlx5_ib_rep_register_vf_vports(dev);
 147}
 148
 149void mlx5_ib_unregister_vport_reps(struct mlx5_ib_dev *dev)
 150{
 151        struct mlx5_eswitch *esw   = dev->mdev->priv.eswitch;
 152
 153        mlx5_ib_rep_unregister_vf_vports(dev); /* VFs vports */
 154        mlx5_eswitch_unregister_vport_rep(esw, 0, REP_IB); /* UPLINK PF*/
 155}
 156
 157u8 mlx5_ib_eswitch_mode(struct mlx5_eswitch *esw)
 158{
 159        return mlx5_eswitch_mode(esw);
 160}
 161
 162struct mlx5_ib_dev *mlx5_ib_get_rep_ibdev(struct mlx5_eswitch *esw,
 163                                          int vport_index)
 164{
 165        return mlx5_eswitch_get_proto_dev(esw, vport_index, REP_IB);
 166}
 167
 168struct net_device *mlx5_ib_get_rep_netdev(struct mlx5_eswitch *esw,
 169                                          int vport_index)
 170{
 171        return mlx5_eswitch_get_proto_dev(esw, vport_index, REP_ETH);
 172}
 173
 174struct mlx5_ib_dev *mlx5_ib_get_uplink_ibdev(struct mlx5_eswitch *esw)
 175{
 176        return mlx5_eswitch_uplink_get_proto_dev(esw, REP_IB);
 177}
 178
 179struct mlx5_eswitch_rep *mlx5_ib_vport_rep(struct mlx5_eswitch *esw, int vport)
 180{
 181        return mlx5_eswitch_vport_rep(esw, vport);
 182}
 183
 184int create_flow_rule_vport_sq(struct mlx5_ib_dev *dev,
 185                              struct mlx5_ib_sq *sq)
 186{
 187        struct mlx5_flow_handle *flow_rule;
 188        struct mlx5_eswitch *esw = dev->mdev->priv.eswitch;
 189
 190        if (!dev->rep)
 191                return 0;
 192
 193        flow_rule =
 194                mlx5_eswitch_add_send_to_vport_rule(esw,
 195                                                    dev->rep->vport,
 196                                                    sq->base.mqp.qpn);
 197        if (IS_ERR(flow_rule))
 198                return PTR_ERR(flow_rule);
 199        sq->flow_rule = flow_rule;
 200
 201        return 0;
 202}
 203