target/linux/layerscape/patches-5.4/701-net-0247-net-mscc-ocelot-move-port-initialization-into-separa.patch

   1 From 66f4bb358787f4f52de0614a92f9e4130d1e0e01 Mon Sep 17 00:00:00 2001
   2 From: Vladimir Oltean <vladimir.oltean@nxp.com>
   3 Date: Sat, 9 Nov 2019 15:02:56 +0200
   4 Subject: [PATCH] net: mscc: ocelot: move port initialization into separate
   5  function
   6
   7 We need a function for the DSA front-end that does none of the
   8 net_device registration, but initializes the hardware ports.
   9
  10 Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
  11 Signed-off-by: David S. Miller <davem@davemloft.net>
  12 ---
  13  drivers/net/ethernet/mscc/ocelot.c | 45 ++++++++++++++++++++------------------
  14  1 file changed, 24 insertions(+), 21 deletions(-)
  15
  16 --- a/drivers/net/ethernet/mscc/ocelot.c
  17 +++ b/drivers/net/ethernet/mscc/ocelot.c
  18 @@ -2137,6 +2137,28 @@ static int ocelot_init_timestamp(struct
  19         return 0;
  20  }
  21
  22 +static void ocelot_init_port(struct ocelot *ocelot, int port)
  23 +{
  24 +       struct ocelot_port *ocelot_port = ocelot->ports[port];
  25 +
  26 +       INIT_LIST_HEAD(&ocelot_port->skbs);
  27 +
  28 +       /* Basic L2 initialization */
  29 +
  30 +       /* Drop frames with multicast source address */
  31 +       ocelot_rmw_gix(ocelot, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,
  32 +                      ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,
  33 +                      ANA_PORT_DROP_CFG, port);
  34 +
  35 +       /* Set default VLAN and tag type to 8021Q. */
  36 +       ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q),
  37 +                      REW_PORT_VLAN_CFG_PORT_TPID_M,
  38 +                      REW_PORT_VLAN_CFG, port);
  39 +
  40 +       /* Enable vcap lookups */
  41 +       ocelot_vcap_enable(ocelot, port);
  42 +}
  43 +
  44  int ocelot_probe_port(struct ocelot *ocelot, u8 port,
  45                       void __iomem *regs,
  46                       struct phy_device *phy)
  47 @@ -2144,7 +2166,6 @@ int ocelot_probe_port(struct ocelot *oce
  48         struct ocelot_port_private *priv;
  49         struct ocelot_port *ocelot_port;
  50         struct net_device *dev;
  51 -       u32 val;
  52         int err;
  53
  54         dev = alloc_etherdev(sizeof(struct ocelot_port_private));
  55 @@ -2172,32 +2193,14 @@ int ocelot_probe_port(struct ocelot *oce
  56         ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, ocelot_port->pvid,
  57                           ENTRYTYPE_LOCKED);
  58
  59 -       INIT_LIST_HEAD(&ocelot_port->skbs);
  60 +       ocelot_init_port(ocelot, port);
  61
  62         err = register_netdev(dev);
  63         if (err) {
  64                 dev_err(ocelot->dev, "register_netdev failed\n");
  65 -               goto err_register_netdev;
  66 +               free_netdev(dev);
  67         }
  68
  69 -       /* Basic L2 initialization */
  70 -
  71 -       /* Drop frames with multicast source address */
  72 -       val = ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA;
  73 -       ocelot_rmw_gix(ocelot, val, val, ANA_PORT_DROP_CFG, port);
  74 -
  75 -       /* Set default VLAN and tag type to 8021Q. */
  76 -       ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q),
  77 -                      REW_PORT_VLAN_CFG_PORT_TPID_M,
  78 -                      REW_PORT_VLAN_CFG, port);
  79 -
  80 -       /* Enable vcap lookups */
  81 -       ocelot_vcap_enable(ocelot, port);
  82 -
  83 -       return 0;
  84 -
  85 -err_register_netdev:
  86 -       free_netdev(dev);
  87         return err;
  88  }
  89  EXPORT_SYMBOL(ocelot_probe_port);