net: netcp: ethss: map vlan priorities to zero flow

The driver currently support only vlan priority zero. So map the
vlan priorities to zero flow in hardware.
Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/ti/netcp_ethss.c

@@ -602,6 +602,7 @@ struct gbe_port_regs {
 struct gbe_port_regs_ofs {
 	u16	port_vlan;
 	u16	tx_pri_map;
+	u16     rx_pri_map;
 	u16	sa_lo;
 	u16	sa_hi;
 	u16	ts_ctl;
@@ -2304,6 +2305,13 @@ static int gbe_slave_open(struct gbe_intf *gbe_intf)
 		gbe_sgmii_rtreset(priv, slave, false);
 	gbe_port_config(priv, slave, priv->rx_packet_max);
 	gbe_set_slave_mac(slave, gbe_intf);
+	/* For NU & 2U switch, map the vlan priorities to zero
+	 * as we only configure to use priority 0
+	 */
+	if (IS_SS_ID_MU(priv))
+		writel(HOST_TX_PRI_MAP_DEFAULT,
+		       GBE_REG_ADDR(slave, port_regs, rx_pri_map));
+
 	/* enable forwarding */
 	cpsw_ale_control_set(priv->ale, slave->port_num,
 			     ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
@@ -3005,6 +3013,7 @@ static int init_slave(struct gbe_priv *gbe_dev, struct gbe_slave *slave,
 		/* Initialize  slave port register offsets */
 		GBENU_SET_REG_OFS(slave, port_regs, port_vlan);
 		GBENU_SET_REG_OFS(slave, port_regs, tx_pri_map);
+		GBENU_SET_REG_OFS(slave, port_regs, rx_pri_map);
 		GBENU_SET_REG_OFS(slave, port_regs, sa_lo);
 		GBENU_SET_REG_OFS(slave, port_regs, sa_hi);
 		GBENU_SET_REG_OFS(slave, port_regs, ts_ctl);