[PATCH v1 net-next 1/3] net: dsa: felix: qos classified based on pcp

[Xiaoliang Yang]

Set the default QoS Classification based on PCP and DEI of vlan tag,
after that, frames can be Classified to different Qos based on PCP tag.
If there is no vlan tag or vlan ignored, use port default Qos.

Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@xxxxxxx>
---
 drivers/net/dsa/ocelot/felix.c         |  6 ++++++
 drivers/net/dsa/ocelot/felix.h         |  1 +
 drivers/net/dsa/ocelot/felix_vsc9959.c | 23 +++++++++++++++++++++++
 3 files changed, 30 insertions(+)

diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
index a2dfd73f8a1a..0afdc6fc3f57 100644
--- a/drivers/net/dsa/ocelot/felix.c
+++ b/drivers/net/dsa/ocelot/felix.c
@@ -547,6 +547,12 @@ static int felix_setup(struct dsa_switch *ds)
 			ocelot_configure_cpu(ocelot, port,
 					     OCELOT_TAG_PREFIX_NONE,
 					     OCELOT_TAG_PREFIX_LONG);
+
+		/* Set the default QoS Classification based on PCP and DEI
+		 * bits of vlan tag.
+		 */
+		if (felix->info->port_qos_map_init)
+			felix->info->port_qos_map_init(ocelot, port);
 	}
 
 	/* Include the CPU port module in the forwarding mask for unknown
diff --git a/drivers/net/dsa/ocelot/felix.h b/drivers/net/dsa/ocelot/felix.h
index b94386fa8d63..0d4ec34309c7 100644
--- a/drivers/net/dsa/ocelot/felix.h
+++ b/drivers/net/dsa/ocelot/felix.h
@@ -35,6 +35,7 @@ struct felix_info {
 				  struct phylink_link_state *state);
 	int	(*prevalidate_phy_mode)(struct ocelot *ocelot, int port,
 					phy_interface_t phy_mode);
+	void	(*port_qos_map_init)(struct ocelot *ocelot, int port);
 };
 
 extern struct felix_info		felix_info_vsc9959;
diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index 1c56568d5aca..5c931fb3e4cd 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -4,6 +4,7 @@
  */
 #include <linux/fsl/enetc_mdio.h>
 #include <soc/mscc/ocelot_vcap.h>
+#include <soc/mscc/ocelot_ana.h>
 #include <soc/mscc/ocelot_sys.h>
 #include <soc/mscc/ocelot.h>
 #include <linux/iopoll.h>
@@ -1209,6 +1210,27 @@ static void vsc9959_mdio_bus_free(struct ocelot *ocelot)
 	mdiobus_unregister(felix->imdio);
 }
 
+static void vsc9959_port_qos_map_init(struct ocelot *ocelot, int port)
+{
+	int i;
+
+	ocelot_rmw_gix(ocelot,
+		       ANA_PORT_QOS_CFG_QOS_PCP_ENA,
+		       ANA_PORT_QOS_CFG_QOS_PCP_ENA,
+		       ANA_PORT_QOS_CFG,
+		       port);
+
+	for (i = 0; i < FELIX_NUM_TC * 2; i++) {
+		ocelot_rmw_ix(ocelot,
+			      (ANA_PORT_PCP_DEI_MAP_DP_PCP_DEI_VAL & i) |
+			      ANA_PORT_PCP_DEI_MAP_QOS_PCP_DEI_VAL(i),
+			      ANA_PORT_PCP_DEI_MAP_DP_PCP_DEI_VAL |
+			      ANA_PORT_PCP_DEI_MAP_QOS_PCP_DEI_VAL_M,
+			      ANA_PORT_PCP_DEI_MAP,
+			      port, i);
+	}
+}
+
 struct felix_info felix_info_vsc9959 = {
 	.target_io_res		= vsc9959_target_io_res,
 	.port_io_res		= vsc9959_port_io_res,
@@ -1232,4 +1254,5 @@ struct felix_info felix_info_vsc9959 = {
 	.pcs_an_restart		= vsc9959_pcs_an_restart,
 	.pcs_link_state		= vsc9959_pcs_link_state,
 	.prevalidate_phy_mode	= vsc9959_prevalidate_phy_mode,
+	.port_qos_map_init	= vsc9959_port_qos_map_init,
 };
-- 
2.17.1