openwrtv3/target/linux/mediatek/patches-4.14/0033-dsa-multi-cpu.patch

Index: linux-4.14.14/drivers/net/dsa/mt7530.c
===================================================================
--- linux-4.14.14.orig/drivers/net/dsa/mt7530.c
+++ linux-4.14.14/drivers/net/dsa/mt7530.c
@@ -670,6 +670,9 @@ static int
 mt7530_cpu_port_enable(struct mt7530_priv *priv,
 		       int port)
 {
+	u8 port_mask = 0;
+	int i;
+
 	/* Enable Mediatek header mode on the cpu port */
 	mt7530_write(priv, MT7530_PVC_P(port),
 		     PORT_SPEC_TAG);
@@ -686,8 +689,12 @@ mt7530_cpu_port_enable(struct mt7530_pri
 	/* CPU port gets connected to all user ports of
 	 * the switch
 	 */
+	for (i = 0; i < MT7530_NUM_PORTS; i++)
+		if ((priv->ds->enabled_port_mask & BIT(i)) &&
+		    (dsa_port_upstream_port(priv->ds, i) == port))
+			port_mask |= BIT(i);
 	mt7530_write(priv, MT7530_PCR_P(port),
-		     PCR_MATRIX(priv->ds->enabled_port_mask));
+		     PCR_MATRIX(port_mask));
 
 	return 0;
 }
@@ -697,6 +704,7 @@ mt7530_port_enable(struct dsa_switch *ds
 		   struct phy_device *phy)
 {
 	struct mt7530_priv *priv = ds->priv;
+	u8 upstream = dsa_port_upstream_port(ds, port);
 
 	mutex_lock(&priv->reg_mutex);
 
@@ -707,7 +715,7 @@ mt7530_port_enable(struct dsa_switch *ds
 	 * restore the port matrix if the port is the member of a certain
 	 * bridge.
 	 */
-	priv->ports[port].pm |= PCR_MATRIX(BIT(MT7530_CPU_PORT));
+	priv->ports[port].pm |= PCR_MATRIX(BIT(upstream));
 	priv->ports[port].enable = true;
 	mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
 		   priv->ports[port].pm);
@@ -770,7 +778,8 @@ mt7530_port_bridge_join(struct dsa_switc
 			struct net_device *bridge)
 {
 	struct mt7530_priv *priv = ds->priv;
-	u32 port_bitmap = BIT(MT7530_CPU_PORT);
+	u8 upstream = dsa_port_upstream_port(ds, port);
+	u32 port_bitmap = BIT(upstream);
 	int i;
 
 	mutex_lock(&priv->reg_mutex);
@@ -808,6 +817,7 @@ mt7530_port_bridge_leave(struct dsa_swit
 			 struct net_device *bridge)
 {
 	struct mt7530_priv *priv = ds->priv;
+	u8 upstream = dsa_port_upstream_port(ds, port);
 	int i;
 
 	mutex_lock(&priv->reg_mutex);
@@ -832,8 +842,8 @@ mt7530_port_bridge_leave(struct dsa_swit
 	 */
 	if (priv->ports[port].enable)
 		mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
-			   PCR_MATRIX(BIT(MT7530_CPU_PORT)));
-	priv->ports[port].pm = PCR_MATRIX(BIT(MT7530_CPU_PORT));
+			   PCR_MATRIX(BIT(upstream)));
+	priv->ports[port].pm = PCR_MATRIX(BIT(upstream));
 
 	mutex_unlock(&priv->reg_mutex);
 }
@@ -908,15 +918,7 @@ err:
 static enum dsa_tag_protocol
 mtk_get_tag_protocol(struct dsa_switch *ds)
 {
-	struct mt7530_priv *priv = ds->priv;
-
-	if (!dsa_is_cpu_port(ds, MT7530_CPU_PORT)) {
-		dev_warn(priv->dev,
-			 "port not matched with tagging CPU port\n");
-		return DSA_TAG_PROTO_NONE;
-	} else {
-		return DSA_TAG_PROTO_MTK;
-	}
+	return DSA_TAG_PROTO_MTK;
 }
 
 static int
@@ -989,7 +991,7 @@ mt7530_setup(struct dsa_switch *ds)
 
 	/* Enable Port 6 only; P5 as GMAC5 which currently is not supported */
 	val = mt7530_read(priv, MT7530_MHWTRAP);
-	val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
+	val &= ~MHWTRAP_P5_DIS & ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
 	val |= MHWTRAP_MANUAL;
 	if (!dsa_is_cpu_port(ds, 5)) {
 		val |= MHWTRAP_P5_DIS;
Index: linux-4.14.14/include/net/dsa.h
===================================================================
--- linux-4.14.14.orig/include/net/dsa.h
+++ linux-4.14.14/include/net/dsa.h
@@ -185,6 +185,10 @@ struct dsa_port {
 	u8			stp_state;
 	struct net_device	*bridge_dev;
 	struct devlink_port	devlink_port;
+
+	struct net_device	*ethernet;
+	int			upstream;
+
 	/*
 	 * Original copy of the master netdev ethtool_ops
 	 */
@@ -266,6 +270,11 @@ static inline bool dsa_is_normal_port(st
 	return !dsa_is_cpu_port(ds, p) && !dsa_is_dsa_port(ds, p);
 }
 
+static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int p)
+{
+	return dsa_is_cpu_port(ds, p) || dsa_is_dsa_port(ds, p);
+}
+
 static inline u8 dsa_upstream_port(struct dsa_switch *ds)
 {
 	struct dsa_switch_tree *dst = ds->dst;
@@ -282,6 +291,18 @@ static inline u8 dsa_upstream_port(struc
 		return ds->rtable[dst->cpu_dp->ds->index];
 }
 
+static inline u8 dsa_port_upstream_port(struct dsa_switch *ds, int port)
+{
+	/*
+	 * If this port has a specific upstream cpu port, use it,
+	 * otherwise use the switch default.
+	 */
+	if (ds->ports[port].upstream)
+		return ds->ports[port].upstream;
+	else
+		return dsa_upstream_port(ds);
+}
+
 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
 			      bool is_static, void *data);
 struct dsa_switch_ops {
Index: linux-4.14.14/net/dsa/dsa2.c
===================================================================
--- linux-4.14.14.orig/net/dsa/dsa2.c
+++ linux-4.14.14/net/dsa/dsa2.c
@@ -253,6 +253,8 @@ static int dsa_cpu_port_apply(struct dsa
 	memset(&port->devlink_port, 0, sizeof(port->devlink_port));
 	err = devlink_port_register(ds->devlink, &port->devlink_port,
 				    port->index);
+	if (port->netdev)
+		port->netdev->dsa_ptr = ds->dst;
 	return err;
 }
 
@@ -262,6 +264,12 @@ static void dsa_cpu_port_unapply(struct
 	dsa_cpu_dsa_destroy(port);
 	port->ds->cpu_port_mask &= ~BIT(port->index);
 
+	if (port->netdev)
+		port->netdev->dsa_ptr = NULL;
+	if (port->ethernet) {
+		dev_put(port->ethernet);
+		port->ethernet = NULL;
+	}
 }
 
 static int dsa_user_port_apply(struct dsa_port *port)
@@ -505,10 +513,9 @@ static int dsa_cpu_parse(struct dsa_port
 		dev_put(ethernet_dev);
 	}
 
-	if (!dst->cpu_dp) {
+	if (!dst->cpu_dp)
 		dst->cpu_dp = port;
-		dst->cpu_dp->netdev = ethernet_dev;
-	}
+	port->netdev = ethernet_dev;
 
 	/* Initialize cpu_port_mask now for drv->setup()
 	 * to have access to a correct value, just like what
@@ -526,6 +533,29 @@ static int dsa_cpu_parse(struct dsa_port
 
 	dst->rcv = dst->tag_ops->rcv;
 
+	dev_hold(ethernet_dev);
+	ds->ports[index].ethernet = ethernet_dev;
+	ds->cpu_port_mask |= BIT(index);
+
+	return 0;
+}
+
+static int dsa_user_parse(struct dsa_port *port, u32 index,
+			  struct dsa_switch *ds)
+{
+	struct device_node *cpu_port;
+	const unsigned int *cpu_port_reg;
+	int cpu_port_index;
+
+	cpu_port = of_parse_phandle(port->dn, "cpu", 0);
+	if (cpu_port) {
+		cpu_port_reg = of_get_property(cpu_port, "reg", NULL);
+		if (!cpu_port_reg)
+			return -EINVAL;
+		cpu_port_index = be32_to_cpup(cpu_port_reg);
+		ds->ports[index].upstream = cpu_port_index;
+	}
+
 	return 0;
 }
 
@@ -533,7 +563,7 @@ static int dsa_ds_parse(struct dsa_switc
 {
 	struct dsa_port *port;
 	u32 index;
-	int err;
+	int err = 0;
 
 	for (index = 0; index < ds->num_ports; index++) {
 		port = &ds->ports[index];
@@ -546,6 +576,9 @@ static int dsa_ds_parse(struct dsa_switc
 			if (err)
 				return err;
 		} else {
+			err = dsa_user_parse(port, index, ds);
+			if (err)
+				return err;
 			/* Initialize enabled_port_mask now for drv->setup()
 			 * to have access to a correct value, just like what
 			 * net/dsa/dsa.c::dsa_switch_setup_one does.
Index: linux-4.14.14/net/dsa/dsa_priv.h
===================================================================
--- linux-4.14.14.orig/net/dsa/dsa_priv.h
+++ linux-4.14.14/net/dsa/dsa_priv.h
@@ -91,6 +91,8 @@ struct dsa_slave_priv {
 
 	/* TC context */
 	struct list_head	mall_tc_list;
+
+	struct net_device       *master;
 };
 
 /* dsa.c */
@@ -177,6 +179,9 @@ extern const struct dsa_device_ops trail
 
 static inline struct net_device *dsa_master_netdev(struct dsa_slave_priv *p)
 {
+	if (p->master)
+		return p->master;
+
 	return p->dp->cpu_dp->netdev;
 }
 
Index: linux-4.14.14/net/dsa/slave.c
===================================================================
--- linux-4.14.14.orig/net/dsa/slave.c
+++ linux-4.14.14/net/dsa/slave.c
@@ -1257,7 +1257,7 @@ int dsa_slave_create(struct dsa_port *po
 	int ret;
 
 	cpu_dp = ds->dst->cpu_dp;
-	master = cpu_dp->netdev;
+	master = ds->ports[port->upstream].ethernet;
 
 	if (!ds->num_tx_queues)
 		ds->num_tx_queues = 1;
@@ -1295,6 +1295,7 @@ int dsa_slave_create(struct dsa_port *po
 	p->dp = port;
 	INIT_LIST_HEAD(&p->mall_tc_list);
 	p->xmit = dst->tag_ops->xmit;
+	p->master = master;
 
 	p->old_pause = -1;
 	p->old_link = -1;