target/linux/layerscape/patches-5.4/701-net-0214-dpaa2-eth-Re-add-get_link_ksettings-ethtool-op.patch

   1 From 0a5243abf168351ea8409caf329448a3e18ab62f Mon Sep 17 00:00:00 2001
   2 From: Ioana Radulescu <ruxandra.radulescu@nxp.com>
   3 Date: Tue, 24 Sep 2019 13:24:40 +0300
   4 Subject: [PATCH] dpaa2-eth: Re-add get_link_ksettings ethtool op
   5
   6 Which was removed from upstream driver since without a MAC driver
   7 we have no support for changing link parameters there.
   8
   9 Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
  10 ---
  11  .../net/ethernet/freescale/dpaa2/dpaa2-ethtool.c   | 47 +++++++++++++++++++++-
  12  1 file changed, 46 insertions(+), 1 deletion(-)
  13
  14 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
  15 +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
  16 @@ -85,7 +85,8 @@ dpaa2_eth_get_link_ksettings(struct net_
  17  {
  18         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
  19
  20 -       link_settings->base.autoneg = AUTONEG_DISABLE;
  21 +       if (priv->link_state.options & DPNI_LINK_OPT_AUTONEG)
  22 +               link_settings->base.autoneg = AUTONEG_ENABLE;
  23         if (!(priv->link_state.options & DPNI_LINK_OPT_HALF_DUPLEX))
  24                 link_settings->base.duplex = DUPLEX_FULL;
  25         link_settings->base.speed = priv->link_state.rate;
  26 @@ -93,6 +94,49 @@ dpaa2_eth_get_link_ksettings(struct net_
  27         return 0;
  28  }
  29
  30 +#define DPNI_DYNAMIC_LINK_SET_VER_MAJOR                7
  31 +#define DPNI_DYNAMIC_LINK_SET_VER_MINOR                1
  32 +static int
  33 +dpaa2_eth_set_link_ksettings(struct net_device *net_dev,
  34 +                            const struct ethtool_link_ksettings *link_settings)
  35 +{
  36 +       struct dpni_link_cfg cfg = {0};
  37 +       struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
  38 +       int err = 0;
  39 +
  40 +       /* If using an older MC version, the DPNI must be down
  41 +        * in order to be able to change link settings. Taking steps to let
  42 +        * the user know that.
  43 +        */
  44 +       if (dpaa2_eth_cmp_dpni_ver(priv, DPNI_DYNAMIC_LINK_SET_VER_MAJOR,
  45 +                                  DPNI_DYNAMIC_LINK_SET_VER_MINOR) < 0) {
  46 +               if (netif_running(net_dev)) {
  47 +                       netdev_info(net_dev, "Interface must be brought down first.\n");
  48 +                       return -EACCES;
  49 +               }
  50 +       }
  51 +
  52 +       cfg.rate = link_settings->base.speed;
  53 +       cfg.options = priv->link_state.options;
  54 +       if (link_settings->base.autoneg == AUTONEG_ENABLE)
  55 +               cfg.options |= DPNI_LINK_OPT_AUTONEG;
  56 +       else
  57 +               cfg.options &= ~DPNI_LINK_OPT_AUTONEG;
  58 +       if (link_settings->base.duplex  == DUPLEX_HALF)
  59 +               cfg.options |= DPNI_LINK_OPT_HALF_DUPLEX;
  60 +       else
  61 +               cfg.options &= ~DPNI_LINK_OPT_HALF_DUPLEX;
  62 +
  63 +       err = dpni_set_link_cfg(priv->mc_io, 0, priv->mc_token, &cfg);
  64 +       if (err)
  65 +               /* ethtool will be loud enough if we return an error; no point
  66 +                * in putting our own error message on the console by default
  67 +                */
  68 +               netdev_dbg(net_dev, "ERROR %d setting link cfg\n", err);
  69 +
  70 +       return err;
  71 +}
  72 +
  73  static void dpaa2_eth_get_pauseparam(struct net_device *net_dev,
  74                                      struct ethtool_pauseparam *pause)
  75  {
  76 @@ -734,6 +778,7 @@ const struct ethtool_ops dpaa2_ethtool_o
  77         .get_drvinfo = dpaa2_eth_get_drvinfo,
  78         .get_link = ethtool_op_get_link,
  79         .get_link_ksettings = dpaa2_eth_get_link_ksettings,
  80 +       .set_link_ksettings = dpaa2_eth_set_link_ksettings,
  81         .get_pauseparam = dpaa2_eth_get_pauseparam,
  82         .set_pauseparam = dpaa2_eth_set_pauseparam,
  83         .get_sset_count = dpaa2_eth_get_sset_count,