diff options
| author |   Cyrille Pitchen <cyrille.pitchen@atmel.com> | 2014-07-24 13:51:00 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-07-24 23:39:55 -0700 |
| commit | 85ff3d87bf2ef1fadcde8553628c60f79806fdb4 (patch) | |
| tree | a3dbe9021d89de69080f24d86b5da9da3fe0ae72 /drivers/net/ethernet | |
| parent | net/macb: add scatter-gather hw feature (diff) | |
| download | linux-dev-85ff3d87bf2ef1fadcde8553628c60f79806fdb4.tar.xz linux-dev-85ff3d87bf2ef1fadcde8553628c60f79806fdb4.zip | |
net/macb: add TX checksum offload feature
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/cadence/macb.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index 2e4bfe39b502..cc36269474a6 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -1525,6 +1525,10 @@ static void macb_configure_dma(struct macb *bp) dmacfg = GEM_BFINS(FBLDO, bp->dma_burst_length, dmacfg); dmacfg |= GEM_BIT(TXPBMS) | GEM_BF(RXBMS, -1L); dmacfg &= ~GEM_BIT(ENDIA); + if (bp->dev->features & NETIF_F_HW_CSUM) + dmacfg |= GEM_BIT(TXCOEN); + else + dmacfg &= ~GEM_BIT(TXCOEN); netdev_dbg(bp->dev, "Cadence configure DMA with 0x%08x\n", dmacfg); gem_writel(bp, DMACFG, dmacfg); @@ -1925,6 +1929,27 @@ int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) } EXPORT_SYMBOL_GPL(macb_ioctl); +static int macb_set_features(struct net_device *netdev, + netdev_features_t features) +{ + struct macb *bp = netdev_priv(netdev); + netdev_features_t changed = features ^ netdev->features; + + /* TX checksum offload */ + if ((changed & NETIF_F_HW_CSUM) && macb_is_gem(bp)) { + u32 dmacfg; + + dmacfg = gem_readl(bp, DMACFG); + if (features & NETIF_F_HW_CSUM) + dmacfg |= GEM_BIT(TXCOEN); + else + dmacfg &= ~GEM_BIT(TXCOEN); + gem_writel(bp, DMACFG, dmacfg); + } + + return 0; +} + static const struct net_device_ops macb_netdev_ops = { .ndo_open = macb_open, .ndo_stop = macb_close, @@ -1938,6 +1963,7 @@ static const struct net_device_ops macb_netdev_ops = { #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = macb_poll_controller, #endif + .ndo_set_features = macb_set_features, }; #if defined(CONFIG_OF) @@ -2122,6 +2148,9 @@ static int __init macb_probe(struct platform_device *pdev) /* Set features */ dev->hw_features = NETIF_F_SG; + /* Checksum offload is only available on gem with packet buffer */ + if (macb_is_gem(bp) && !(bp->caps & MACB_CAPS_FIFO_MODE)) + dev->hw_features |= NETIF_F_HW_CSUM; if (bp->caps & MACB_CAPS_SG_DISABLED) dev->hw_features &= ~NETIF_F_SG; dev->features = dev->hw_features; |