drivers/net/ethernet/mellanox/mlx5/core/en/channels.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /* Copyright (c) 2021, Mellanox Technologies inc. All rights reserved. */
   3
   4 #include "channels.h"
   5 #include "en.h"
   6 #include "en/dim.h"
   7 #include "en/ptp.h"
   8
   9 unsigned int mlx5e_channels_get_num(struct mlx5e_channels *chs)
  10 {
  11         return chs->num;
  12 }
  13
  14 static struct mlx5e_channel *mlx5e_channels_get(struct mlx5e_channels *chs, unsigned int ix)
  15 {
  16         WARN_ON_ONCE(ix >= mlx5e_channels_get_num(chs));
  17         return chs->c[ix];
  18 }
  19
  20 bool mlx5e_channels_is_xsk(struct mlx5e_channels *chs, unsigned int ix)
  21 {
  22         struct mlx5e_channel *c = mlx5e_channels_get(chs, ix);
  23
  24         return test_bit(MLX5E_CHANNEL_STATE_XSK, c->state);
  25 }
  26
  27 void mlx5e_channels_get_regular_rqn(struct mlx5e_channels *chs, unsigned int ix, u32 *rqn,
  28                                     u32 *vhca_id)
  29 {
  30         struct mlx5e_channel *c = mlx5e_channels_get(chs, ix);
  31
  32         *rqn = c->rq.rqn;
  33         if (vhca_id)
  34                 *vhca_id = MLX5_CAP_GEN(c->mdev, vhca_id);
  35 }
  36
  37 void mlx5e_channels_get_xsk_rqn(struct mlx5e_channels *chs, unsigned int ix, u32 *rqn,
  38                                 u32 *vhca_id)
  39 {
  40         struct mlx5e_channel *c = mlx5e_channels_get(chs, ix);
  41
  42         WARN_ON_ONCE(!test_bit(MLX5E_CHANNEL_STATE_XSK, c->state));
  43
  44         *rqn = c->xskrq.rqn;
  45         if (vhca_id)
  46                 *vhca_id = MLX5_CAP_GEN(c->mdev, vhca_id);
  47 }
  48
  49 bool mlx5e_channels_get_ptp_rqn(struct mlx5e_channels *chs, u32 *rqn)
  50 {
  51         struct mlx5e_ptp *c = chs->ptp;
  52
  53         if (!c || !test_bit(MLX5E_PTP_STATE_RX, c->state))
  54                 return false;
  55
  56         *rqn = c->rq.rqn;
  57         return true;
  58 }
  59
  60 int mlx5e_channels_rx_change_dim(struct mlx5e_channels *chs, bool enable)
  61 {
  62         int i;
  63
  64         for (i = 0; i < chs->num; i++) {
  65                 int err = mlx5e_dim_rx_change(&chs->c[i]->rq, enable);
  66
  67                 if (err)
  68                         return err;
  69         }
  70
  71         return 0;
  72 }
  73
  74 int mlx5e_channels_tx_change_dim(struct mlx5e_channels *chs, bool enable)
  75 {
  76         int i, tc;
  77
  78         for (i = 0; i < chs->num; i++) {
  79                 for (tc = 0; tc < mlx5e_get_dcb_num_tc(&chs->params); tc++) {
  80                         int err = mlx5e_dim_tx_change(&chs->c[i]->sq[tc], enable);
  81
  82                         if (err)
  83                                 return err;
  84                 }
  85         }
  86
  87         return 0;
  88 }
  89
  90 int mlx5e_channels_rx_toggle_dim(struct mlx5e_channels *chs)
  91 {
  92         int i;
  93
  94         for (i = 0; i < chs->num; i++) {
  95                 /* If dim is enabled for the channel, reset the dim state so the
  96                  * collected statistics will be reset. This is useful for
  97                  * supporting legacy interfaces that allow things like changing
  98                  * the CQ period mode for all channels without disturbing
  99                  * individual channel configurations.
 100                  */
 101                 if (chs->c[i]->rq.dim) {
 102                         int err;
 103
 104                         mlx5e_dim_rx_change(&chs->c[i]->rq, false);
 105                         err = mlx5e_dim_rx_change(&chs->c[i]->rq, true);
 106                         if (err)
 107                                 return err;
 108                 }
 109         }
 110
 111         return 0;
 112 }
 113
 114 int mlx5e_channels_tx_toggle_dim(struct mlx5e_channels *chs)
 115 {
 116         int i, tc;
 117
 118         for (i = 0; i < chs->num; i++) {
 119                 for (tc = 0; tc < mlx5e_get_dcb_num_tc(&chs->params); tc++) {
 120                         int err;
 121
 122                         /* If dim is enabled for the channel, reset the dim
 123                          * state so the collected statistics will be reset. This
 124                          * is useful for supporting legacy interfaces that allow
 125                          * things like changing the CQ period mode for all
 126                          * channels without disturbing individual channel
 127                          * configurations.
 128                          */
 129                         if (!chs->c[i]->sq[tc].dim)
 130                                 continue;
 131
 132                         mlx5e_dim_tx_change(&chs->c[i]->sq[tc], false);
 133                         err = mlx5e_dim_tx_change(&chs->c[i]->sq[tc], true);
 134                         if (err)
 135                                 return err;
 136                 }
 137         }
 138
 139         return 0;
 140 }