gianfar: Optimize interrupt coalescing configuration

[karo-tx-linux.git] / drivers / net / gianfar_ethtool.c

diff --git a/drivers/net/gianfar_ethtool.c b/drivers/net/gianfar_ethtool.c
index 53944b120a3db85a19de72e99c078964355ffd65..c111c532f7b3c7976316140705c8144f26bd4c5c 100644 (file)
--- a/drivers/net/gianfar_ethtool.c
+++ b/drivers/net/gianfar_ethtool.c
@@ -201,8 +201,8 @@ static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
        if (NULL == phydev)
                return -ENODEV;
 
-       cmd->maxtxpkt = priv->txcount;
-       cmd->maxrxpkt = priv->rxcount;
+       cmd->maxtxpkt = get_icft_value(priv->txic);
+       cmd->maxrxpkt = get_icft_value(priv->rxic);
 
        return phy_ethtool_gset(phydev, cmd);
 }
@@ -279,6 +279,10 @@ static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int tic
 static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
 {
        struct gfar_private *priv = netdev_priv(dev);
+       unsigned long rxtime;
+       unsigned long rxcount;
+       unsigned long txtime;
+       unsigned long txcount;
 
        if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
                return -EOPNOTSUPP;
@@ -286,11 +290,15 @@ static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals
        if (NULL == priv->phydev)
                return -ENODEV;
 
-       cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, priv->rxtime);
-       cvals->rx_max_coalesced_frames = priv->rxcount;
+       rxtime  = get_ictt_value(priv->rxic);
+       rxcount = get_icft_value(priv->rxic);
+       txtime  = get_ictt_value(priv->txic);
+       txcount = get_icft_value(priv->txic);;
+       cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
+       cvals->rx_max_coalesced_frames = rxcount;
 
-       cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, priv->txtime);
-       cvals->tx_max_coalesced_frames = priv->txcount;
+       cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
+       cvals->tx_max_coalesced_frames = txcount;
 
        cvals->use_adaptive_rx_coalesce = 0;
        cvals->use_adaptive_tx_coalesce = 0;
@@ -358,8 +366,9 @@ static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals
                return -EINVAL;
        }
 
-       priv->rxtime = gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs);
-       priv->rxcount = cvals->rx_max_coalesced_frames;
+       priv->rxic = mk_ic_value(
+               gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs),
+               cvals->rx_max_coalesced_frames);
 
        /* Set up tx coalescing */
        if ((cvals->tx_coalesce_usecs == 0) ||
@@ -381,20 +390,17 @@ static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals
                return -EINVAL;
        }
 
-       priv->txtime = gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs);
-       priv->txcount = cvals->tx_max_coalesced_frames;
+       priv->txic = mk_ic_value(
+               gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs),
+               cvals->tx_max_coalesced_frames);
 
+       gfar_write(&priv->regs->rxic, 0);
        if (priv->rxcoalescing)
-               gfar_write(&priv->regs->rxic,
-                          mk_ic_value(priv->rxcount, priv->rxtime));
-       else
-               gfar_write(&priv->regs->rxic, 0);
+               gfar_write(&priv->regs->rxic, priv->rxic);
 
+       gfar_write(&priv->regs->txic, 0);
        if (priv->txcoalescing)
-               gfar_write(&priv->regs->txic,
-                          mk_ic_value(priv->txcount, priv->txtime));
-       else
-               gfar_write(&priv->regs->txic, 0);
+               gfar_write(&priv->regs->txic, priv->txic);
 
        return 0;
 }