net: stmmac: xgmac: Implement ARP Offload

Implement the ARP Offload feature in XGMAC cores.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 1953805..912bbb6 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -361,6 +361,7 @@ struct dma_features {
        unsigned int vlins;
        unsigned int dvlan;
        unsigned int l3l4fnum;
+       unsigned int arpoffsel;
 };
 
 /* GMAC TX FIFO is 8K, Rx FIFO is 16K */

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 9f568b5..36262ef 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -1338,6 +1338,22 @@ static int dwxgmac2_config_l4_filter(struct mac_device_info *hw, u32 filter_no,
        return 0;
 }
 
+static void dwxgmac2_set_arp_offload(struct mac_device_info *hw, bool en,
+                                    u32 addr)
+{
+       void __iomem *ioaddr = hw->pcsr;
+       u32 value;
+
+       writel(addr, ioaddr + XGMAC_ARP_ADDR);
+
+       value = readl(ioaddr + XGMAC_RX_CONFIG);
+       if (en)
+               value |= XGMAC_CONFIG_ARPEN;
+       else
+               value &= ~XGMAC_CONFIG_ARPEN;
+       writel(value, ioaddr + XGMAC_RX_CONFIG);
+}
+
 const struct stmmac_ops dwxgmac210_ops = {
        .core_init = dwxgmac2_core_init,
        .set_mac = dwxgmac2_set_mac,
@@ -1380,6 +1396,7 @@ const struct stmmac_ops dwxgmac210_ops = {
        .enable_vlan = dwxgmac2_enable_vlan,
        .config_l3_filter = dwxgmac2_config_l3_filter,
        .config_l4_filter = dwxgmac2_config_l4_filter,
+       .set_arp_offload = dwxgmac2_set_arp_offload,
 };
 
 int dwxgmac2_setup(struct stmmac_priv *priv)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index fb0283b..fd60bf5 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -370,6 +370,7 @@ static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
        dma_cap->atime_stamp = (hw_cap & XGMAC_HWFEAT_TSSEL) >> 12;
        dma_cap->av = (hw_cap & XGMAC_HWFEAT_AVSEL) >> 11;
        dma_cap->av &= (hw_cap & XGMAC_HWFEAT_RAVSEL) >> 10;
+       dma_cap->arpoffsel = (hw_cap & XGMAC_HWFEAT_ARPOFFSEL) >> 9;
        dma_cap->rmon = (hw_cap & XGMAC_HWFEAT_MMCSEL) >> 8;
        dma_cap->pmt_magic_frame = (hw_cap & XGMAC_HWFEAT_MGKSEL) >> 7;
        dma_cap->pmt_remote_wake_up = (hw_cap & XGMAC_HWFEAT_RWKSEL) >> 6;

diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index 47c8ad9..ddb851d 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -370,6 +370,7 @@ struct stmmac_ops {
        int (*config_l4_filter)(struct mac_device_info *hw, u32 filter_no,
                                bool en, bool udp, bool sa, bool inv,
                                u32 match);
+       void (*set_arp_offload)(struct mac_device_info *hw, bool en, u32 addr);
 };
 
 #define stmmac_core_init(__priv, __args...) \
@@ -454,6 +455,8 @@ struct stmmac_ops {
        stmmac_do_callback(__priv, mac, config_l3_filter, __args)
 #define stmmac_config_l4_filter(__priv, __args...) \
        stmmac_do_callback(__priv, mac, config_l4_filter, __args)
+#define stmmac_set_arp_offload(__priv, __args...) \
+       stmmac_do_void_callback(__priv, mac, set_arp_offload, __args)
 
 /* PTP and HW Timer helpers */
 struct stmmac_hwtimestamp {