target/linux/leon/patches/017-greth_no_gbit.patch

   1 From 2e864d18c31d4e0255269f9e9cfccc09512676c6 Mon Sep 17 00:00:00 2001
   2 From: Daniel Hellstrom <daniel@gaisler.com>
   3 Date: Wed, 1 Dec 2010 16:51:38 +0100
   4 Subject: [PATCH] GRETH: added greth_no_gbit option
   5
   6 Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
   7 ---
   8  drivers/net/greth.c |   15 +++++++++++++--
   9  drivers/net/greth.h |    1 +
  10  2 files changed, 14 insertions(+), 2 deletions(-)
  11
  12 --- a/drivers/net/greth.c
  13 +++ b/drivers/net/greth.c
  14 @@ -66,6 +66,10 @@ static int greth_edcl = 1;
  15  module_param(greth_edcl, int, 0);
  16  MODULE_PARM_DESC(greth_edcl, "GRETH EDCL usage indicator. Set to 1 if EDCL is used.");
  17
  18 +static int no_gbit = 0;
  19 +module_param(no_gbit, int, S_IRUGO);
  20 +MODULE_PARM_DESC(no_gbit, "GRETH report GBit not supported by MAC enable. Only affects GRETH GBit MAC, default 0 (off).");
  21 +
  22  static int greth_open(struct net_device *dev);
  23  static netdev_tx_t greth_start_xmit(struct sk_buff *skb,
  24            struct net_device *dev);
  25 @@ -1284,7 +1288,7 @@ static int greth_mdio_probe(struct net_d
  26         }
  27
  28         ret = phy_connect_direct(dev, phy, &greth_link_change,
  29 -                       0, greth->gbit_mac ?
  30 +                       0, greth->gbit_phy_support ?
  31                         PHY_INTERFACE_MODE_GMII :
  32                         PHY_INTERFACE_MODE_MII);
  33         if (ret) {
  34 @@ -1293,7 +1297,7 @@ static int greth_mdio_probe(struct net_d
  35                 return ret;
  36         }
  37
  38 -       if (greth->gbit_mac)
  39 +       if (greth->gbit_phy_support)
  40                 phy->supported &= PHY_GBIT_FEATURES;
  41         else
  42                 phy->supported &= PHY_BASIC_FEATURES;
  43 @@ -1441,6 +1445,13 @@ static int __devinit greth_of_probe(stru
  44         tmp = GRETH_REGLOAD(regs->control);
  45         greth->gbit_mac = (tmp >> 27) & 1;
  46
  47 +       /* Let user skip GBit link mode by telling MDIO layer that MAC does
  48 +        * not support GBIT (for debug) */
  49 +       if (greth->gbit_mac && !no_gbit)
  50 +               greth->gbit_phy_support = 1;
  51 +       else
  52 +               greth->gbit_phy_support = 0;
  53 +
  54         /* Check for multicast capability */
  55         greth->multicast = (tmp >> 25) & 1;
  56
  57 --- a/drivers/net/greth.h
  58 +++ b/drivers/net/greth.h
  59 @@ -138,6 +138,7 @@ struct greth_private {
  60         u8 gbit_mac;
  61         u8 mdio_int_en;
  62         u8 edcl;
  63 +       u8 gbit_phy_support;
  64  };
  65
  66  #endif