1 files changed, 115 insertions, 120 deletions

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index f00cbf5753b9..58ca684d73f7 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -471,6 +471,12 @@ static int mv88e6xxx_port_ppu_updates(struct mv88e6xxx_chip *chip, int port)
 	u16 reg;
 	int err;
 
+	/* The 88e6250 family does not have the PHY detect bit. Instead,
+	 * report whether the port is internal.
+	 */
+	if (chip->info->family == MV88E6XXX_FAMILY_6250)
+		return port < chip->info->num_internal_phys;
+
 	err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_STS, &reg);
 	if (err) {
 		dev_err(chip->dev,
@@ -692,44 +698,48 @@ static void mv88e6xxx_mac_config(struct dsa_switch *ds, int port,
 {
 	struct mv88e6xxx_chip *chip = ds->priv;
 	struct mv88e6xxx_port *p;
-	int err;
+	int err = 0;
 
 	p = &chip->ports[port];
 
-	/* FIXME: is this the correct test? If we're in fixed mode on an
-	 * internal port, why should we process this any different from
-	 * PHY mode? On the other hand, the port may be automedia between
-	 * an internal PHY and the serdes...
-	 */
-	if ((mode == MLO_AN_PHY) && mv88e6xxx_phy_is_internal(ds, port))
-		return;
-
 	mv88e6xxx_reg_lock(chip);
-	/* In inband mode, the link may come up at any time while the link
-	 * is not forced down. Force the link down while we reconfigure the
-	 * interface mode.
-	 */
-	if (mode == MLO_AN_INBAND && p->interface != state->interface &&
-	    chip->info->ops->port_set_link)
-		chip->info->ops->port_set_link(chip, port, LINK_FORCED_DOWN);
-
-	err = mv88e6xxx_port_config_interface(chip, port, state->interface);
-	if (err && err != -EOPNOTSUPP)
-		goto err_unlock;
 
-	err = mv88e6xxx_serdes_pcs_config(chip, port, mode, state->interface,
-					  state->advertising);
-	/* FIXME: we should restart negotiation if something changed - which
-	 * is something we get if we convert to using phylinks PCS operations.
-	 */
-	if (err > 0)
-		err = 0;
+	if (mode != MLO_AN_PHY || !mv88e6xxx_phy_is_internal(ds, port)) {
+		/* In inband mode, the link may come up at any time while the
+		 * link is not forced down. Force the link down while we
+		 * reconfigure the interface mode.
+		 */
+		if (mode == MLO_AN_INBAND &&
+		    p->interface != state->interface &&
+		    chip->info->ops->port_set_link)
+			chip->info->ops->port_set_link(chip, port,
+						       LINK_FORCED_DOWN);
+
+		err = mv88e6xxx_port_config_interface(chip, port,
+						      state->interface);
+		if (err && err != -EOPNOTSUPP)
+			goto err_unlock;
+
+		err = mv88e6xxx_serdes_pcs_config(chip, port, mode,
+						  state->interface,
+						  state->advertising);
+		/* FIXME: we should restart negotiation if something changed -
+		 * which is something we get if we convert to using phylinks
+		 * PCS operations.
+		 */
+		if (err > 0)
+			err = 0;
+	}
 
 	/* Undo the forced down state above after completing configuration
-	 * irrespective of its state on entry, which allows the link to come up.
+	 * irrespective of its state on entry, which allows the link to come
+	 * up in the in-band case where there is no separate SERDES. Also
+	 * ensure that the link can come up if the PPU is in use and we are
+	 * in PHY mode (we treat the PPU as an effective in-band mechanism.)
 	 */
-	if (mode == MLO_AN_INBAND && p->interface != state->interface &&
-	    chip->info->ops->port_set_link)
+	if (chip->info->ops->port_set_link &&
+	    ((mode == MLO_AN_INBAND && p->interface != state->interface) ||
+	     (mode == MLO_AN_PHY && mv88e6xxx_port_ppu_updates(chip, port))))
 		chip->info->ops->port_set_link(chip, port, LINK_UNFORCED);
 
 	p->interface = state->interface;
@@ -752,13 +762,16 @@ static void mv88e6xxx_mac_link_down(struct dsa_switch *ds, int port,
 	ops = chip->info->ops;
 
 	mv88e6xxx_reg_lock(chip);
-	/* Internal PHYs propagate their configuration directly to the MAC.
-	 * External PHYs depend on whether the PPU is enabled for this port.
+	/* Force the link down if we know the port may not be automatically
+	 * updated by the switch or if we are using fixed-link mode.
 	 */
-	if (((!mv88e6xxx_phy_is_internal(ds, port) &&
-	      !mv88e6xxx_port_ppu_updates(chip, port)) ||
+	if ((!mv88e6xxx_port_ppu_updates(chip, port) ||
 	     mode == MLO_AN_FIXED) && ops->port_sync_link)
 		err = ops->port_sync_link(chip, port, mode, false);
+
+	if (!err && ops->port_set_speed_duplex)
+		err = ops->port_set_speed_duplex(chip, port, SPEED_UNFORCED,
+						 DUPLEX_UNFORCED);
 	mv88e6xxx_reg_unlock(chip);
 
 	if (err)
@@ -779,11 +792,11 @@ static void mv88e6xxx_mac_link_up(struct dsa_switch *ds, int port,
 	ops = chip->info->ops;
 
 	mv88e6xxx_reg_lock(chip);
-	/* Internal PHYs propagate their configuration directly to the MAC.
-	 * External PHYs depend on whether the PPU is enabled for this port.
+	/* Configure and force the link up if we know that the port may not
+	 * automatically updated by the switch or if we are using fixed-link
+	 * mode.
 	 */
-	if ((!mv88e6xxx_phy_is_internal(ds, port) &&
-	     !mv88e6xxx_port_ppu_updates(chip, port)) ||
+	if (!mv88e6xxx_port_ppu_updates(chip, port) ||
 	    mode == MLO_AN_FIXED) {
 		/* FIXME: for an automedia port, should we force the link
 		 * down here - what if the link comes up due to "other" media
@@ -1228,8 +1241,7 @@ static u16 mv88e6xxx_port_vlan(struct mv88e6xxx_chip *chip, int dev, int port)
 {
 	struct dsa_switch *ds = chip->ds;
 	struct dsa_switch_tree *dst = ds->dst;
-	struct net_device *br;
-	struct dsa_port *dp;
+	struct dsa_port *dp, *other_dp;
 	bool found = false;
 	u16 pvlan;
 
@@ -1238,11 +1250,9 @@ static u16 mv88e6xxx_port_vlan(struct mv88e6xxx_chip *chip, int dev, int port)
 		list_for_each_entry(dp, &dst->ports, list) {
 			if (dp->ds->index == dev && dp->index == port) {
 				/* dp might be a DSA link or a user port, so it
-				 * might or might not have a bridge_dev
-				 * pointer. Use the "found" variable for both
-				 * cases.
+				 * might or might not have a bridge.
+				 * Use the "found" variable for both cases.
 				 */
-				br = dp->bridge_dev;
 				found = true;
 				break;
 			}
@@ -1250,13 +1260,14 @@ static u16 mv88e6xxx_port_vlan(struct mv88e6xxx_chip *chip, int dev, int port)
 	/* dev is a virtual bridge */
 	} else {
 		list_for_each_entry(dp, &dst->ports, list) {
-			if (dp->bridge_num < 0)
+			unsigned int bridge_num = dsa_port_bridge_num_get(dp);
+
+			if (!bridge_num)
 				continue;
 
-			if (dp->bridge_num + 1 + dst->last_switch != dev)
+			if (bridge_num + dst->last_switch != dev)
 				continue;
 
-			br = dp->bridge_dev;
 			found = true;
 			break;
 		}
@@ -1275,12 +1286,11 @@ static u16 mv88e6xxx_port_vlan(struct mv88e6xxx_chip *chip, int dev, int port)
 	/* Frames from user ports can egress any local DSA links and CPU ports,
 	 * as well as any local member of their bridge group.
 	 */
-	list_for_each_entry(dp, &dst->ports, list)
-		if (dp->ds == ds &&
-		    (dp->type == DSA_PORT_TYPE_CPU ||
-		     dp->type == DSA_PORT_TYPE_DSA ||
-		     (br && dp->bridge_dev == br)))
-			pvlan |= BIT(dp->index);
+	dsa_switch_for_each_port(other_dp, ds)
+		if (other_dp->type == DSA_PORT_TYPE_CPU ||
+		    other_dp->type == DSA_PORT_TYPE_DSA ||
+		    dsa_port_bridge_same(dp, other_dp))
+			pvlan |= BIT(other_dp->index);
 
 	return pvlan;
 }
@@ -1647,12 +1657,13 @@ static int mv88e6xxx_atu_new(struct mv88e6xxx_chip *chip, u16 *fid)
 static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,
 					u16 vid)
 {
+	struct dsa_port *dp = dsa_to_port(ds, port), *other_dp;
 	struct mv88e6xxx_chip *chip = ds->priv;
 	struct mv88e6xxx_vtu_entry vlan;
-	int i, err;
+	int err;
 
 	/* DSA and CPU ports have to be members of multiple vlans */
-	if (dsa_is_dsa_port(ds, port) || dsa_is_cpu_port(ds, port))
+	if (dsa_port_is_dsa(dp) || dsa_port_is_cpu(dp))
 		return 0;
 
 	err = mv88e6xxx_vtu_get(chip, vid, &vlan);
@@ -1662,27 +1673,22 @@ static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,
 	if (!vlan.valid)
 		return 0;
 
-	for (i = 0; i < mv88e6xxx_num_ports(chip); ++i) {
-		if (dsa_is_dsa_port(ds, i) || dsa_is_cpu_port(ds, i))
-			continue;
+	dsa_switch_for_each_user_port(other_dp, ds) {
+		struct net_device *other_br;
 
-		if (!dsa_to_port(ds, i)->slave)
-			continue;
-
-		if (vlan.member[i] ==
+		if (vlan.member[other_dp->index] ==
 		    MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_NON_MEMBER)
 			continue;
 
-		if (dsa_to_port(ds, i)->bridge_dev ==
-		    dsa_to_port(ds, port)->bridge_dev)
+		if (dsa_port_bridge_same(dp, other_dp))
 			break; /* same bridge, check next VLAN */
 
-		if (!dsa_to_port(ds, i)->bridge_dev)
+		other_br = dsa_port_bridge_dev_get(other_dp);
+		if (!other_br)
 			continue;
 
 		dev_err(ds->dev, "p%d: hw VLAN %d already used by port %d in %s\n",
-			port, vlan.vid, i,
-			netdev_name(dsa_to_port(ds, i)->bridge_dev));
+			port, vlan.vid, other_dp->index, netdev_name(other_br));
 		return -EOPNOTSUPP;
 	}
 
@@ -1692,13 +1698,14 @@ static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,
 static int mv88e6xxx_port_commit_pvid(struct mv88e6xxx_chip *chip, int port)
 {
 	struct dsa_port *dp = dsa_to_port(chip->ds, port);
+	struct net_device *br = dsa_port_bridge_dev_get(dp);
 	struct mv88e6xxx_port *p = &chip->ports[port];
 	u16 pvid = MV88E6XXX_VID_STANDALONE;
 	bool drop_untagged = false;
 	int err;
 
-	if (dp->bridge_dev) {
-		if (br_vlan_enabled(dp->bridge_dev)) {
+	if (br) {
+		if (br_vlan_enabled(br)) {
 			pvid = p->bridge_pvid.vid;
 			drop_untagged = !p->bridge_pvid.valid;
 		} else {
@@ -2416,7 +2423,7 @@ static int mv88e6xxx_port_fdb_dump(struct dsa_switch *ds, int port,
 }
 
 static int mv88e6xxx_bridge_map(struct mv88e6xxx_chip *chip,
-				struct net_device *br)
+				struct dsa_bridge bridge)
 {
 	struct dsa_switch *ds = chip->ds;
 	struct dsa_switch_tree *dst = ds->dst;
@@ -2424,7 +2431,7 @@ static int mv88e6xxx_bridge_map(struct mv88e6xxx_chip *chip,
 	int err;
 
 	list_for_each_entry(dp, &dst->ports, list) {
-		if (dp->bridge_dev == br) {
+		if (dsa_port_offloads_bridge(dp, &bridge)) {
 			if (dp->ds == ds) {
 				/* This is a local bridge group member,
 				 * remap its Port VLAN Map.
@@ -2447,15 +2454,29 @@ static int mv88e6xxx_bridge_map(struct mv88e6xxx_chip *chip,
 	return 0;
 }
 
+/* Treat the software bridge as a virtual single-port switch behind the
+ * CPU and map in the PVT. First dst->last_switch elements are taken by
+ * physical switches, so start from beyond that range.
+ */
+static int mv88e6xxx_map_virtual_bridge_to_pvt(struct dsa_switch *ds,
+					       unsigned int bridge_num)
+{
+	u8 dev = bridge_num + ds->dst->last_switch;
+	struct mv88e6xxx_chip *chip = ds->priv;
+
+	return mv88e6xxx_pvt_map(chip, dev, 0);
+}
+
 static int mv88e6xxx_port_bridge_join(struct dsa_switch *ds, int port,
-				      struct net_device *br)
+				      struct dsa_bridge bridge,
+				      bool *tx_fwd_offload)
 {
 	struct mv88e6xxx_chip *chip = ds->priv;
 	int err;
 
 	mv88e6xxx_reg_lock(chip);
 
-	err = mv88e6xxx_bridge_map(chip, br);
+	err = mv88e6xxx_bridge_map(chip, bridge);
 	if (err)
 		goto unlock;
 
@@ -2463,6 +2484,14 @@ static int mv88e6xxx_port_bridge_join(struct dsa_switch *ds, int port,
 	if (err)
 		goto unlock;
 
+	if (mv88e6xxx_has_pvt(chip)) {
+		err = mv88e6xxx_map_virtual_bridge_to_pvt(ds, bridge.num);
+		if (err)
+			goto unlock;
+
+		*tx_fwd_offload = true;
+	}
+
 unlock:
 	mv88e6xxx_reg_unlock(chip);
 
@@ -2470,14 +2499,18 @@ unlock:
 }
 
 static void mv88e6xxx_port_bridge_leave(struct dsa_switch *ds, int port,
-					struct net_device *br)
+					struct dsa_bridge bridge)
 {
 	struct mv88e6xxx_chip *chip = ds->priv;
 	int err;
 
 	mv88e6xxx_reg_lock(chip);
 
-	if (mv88e6xxx_bridge_map(chip, br) ||
+	if (bridge.tx_fwd_offload &&
+	    mv88e6xxx_map_virtual_bridge_to_pvt(ds, bridge.num))
+		dev_err(ds->dev, "failed to remap cross-chip Port VLAN\n");
+
+	if (mv88e6xxx_bridge_map(chip, bridge) ||
 	    mv88e6xxx_port_vlan_map(chip, port))
 		dev_err(ds->dev, "failed to remap in-chip Port VLAN\n");
 
@@ -2492,7 +2525,7 @@ static void mv88e6xxx_port_bridge_leave(struct dsa_switch *ds, int port,
 
 static int mv88e6xxx_crosschip_bridge_join(struct dsa_switch *ds,
 					   int tree_index, int sw_index,
-					   int port, struct net_device *br)
+					   int port, struct dsa_bridge bridge)
 {
 	struct mv88e6xxx_chip *chip = ds->priv;
 	int err;
@@ -2502,6 +2535,7 @@ static int mv88e6xxx_crosschip_bridge_join(struct dsa_switch *ds,
 
 	mv88e6xxx_reg_lock(chip);
 	err = mv88e6xxx_pvt_map(chip, sw_index, port);
+	err = err ? : mv88e6xxx_map_virtual_bridge_to_pvt(ds, bridge.num);
 	mv88e6xxx_reg_unlock(chip);
 
 	return err;
@@ -2509,7 +2543,7 @@ static int mv88e6xxx_crosschip_bridge_join(struct dsa_switch *ds,
 
 static void mv88e6xxx_crosschip_bridge_leave(struct dsa_switch *ds,
 					     int tree_index, int sw_index,
-					     int port, struct net_device *br)
+					     int port, struct dsa_bridge bridge)
 {
 	struct mv88e6xxx_chip *chip = ds->priv;
 
@@ -2517,49 +2551,12 @@ static void mv88e6xxx_crosschip_bridge_leave(struct dsa_switch *ds,
 		return;
 
 	mv88e6xxx_reg_lock(chip);
-	if (mv88e6xxx_pvt_map(chip, sw_index, port))
+	if (mv88e6xxx_pvt_map(chip, sw_index, port) ||
+	    mv88e6xxx_map_virtual_bridge_to_pvt(ds, bridge.num))
 		dev_err(ds->dev, "failed to remap cross-chip Port VLAN\n");
 	mv88e6xxx_reg_unlock(chip);
 }
 
-/* Treat the software bridge as a virtual single-port switch behind the
- * CPU and map in the PVT. First dst->last_switch elements are taken by
- * physical switches, so start from beyond that range.
- */
-static int mv88e6xxx_map_virtual_bridge_to_pvt(struct dsa_switch *ds,
-					       int bridge_num)
-{
-	u8 dev = bridge_num + ds->dst->last_switch + 1;
-	struct mv88e6xxx_chip *chip = ds->priv;
-	int err;
-
-	mv88e6xxx_reg_lock(chip);
-	err = mv88e6xxx_pvt_map(chip, dev, 0);
-	mv88e6xxx_reg_unlock(chip);
-
-	return err;
-}
-
-static int mv88e6xxx_bridge_tx_fwd_offload(struct dsa_switch *ds, int port,
-					   struct net_device *br,
-					   int bridge_num)
-{
-	return mv88e6xxx_map_virtual_bridge_to_pvt(ds, bridge_num);
-}
-
-static void mv88e6xxx_bridge_tx_fwd_unoffload(struct dsa_switch *ds, int port,
-					      struct net_device *br,
-					      int bridge_num)
-{
-	int err;
-
-	err = mv88e6xxx_map_virtual_bridge_to_pvt(ds, bridge_num);
-	if (err) {
-		dev_err(ds->dev, "failed to remap cross-chip Port VLAN: %pe\n",
-			ERR_PTR(err));
-	}
-}
-
 static int mv88e6xxx_software_reset(struct mv88e6xxx_chip *chip)
 {
 	if (chip->info->ops->reset)
@@ -3186,8 +3183,8 @@ static int mv88e6xxx_setup(struct dsa_switch *ds)
 	 * time.
 	 */
 	if (mv88e6xxx_has_pvt(chip))
-		ds->num_fwd_offloading_bridges = MV88E6XXX_MAX_PVT_SWITCHES -
-						 ds->dst->last_switch - 1;
+		ds->max_num_bridges = MV88E6XXX_MAX_PVT_SWITCHES -
+				      ds->dst->last_switch - 1;
 
 	mv88e6xxx_reg_lock(chip);
 
@@ -6279,8 +6276,6 @@ static const struct dsa_switch_ops mv88e6xxx_switch_ops = {
 	.crosschip_lag_change	= mv88e6xxx_crosschip_lag_change,
 	.crosschip_lag_join	= mv88e6xxx_crosschip_lag_join,
 	.crosschip_lag_leave	= mv88e6xxx_crosschip_lag_leave,
-	.port_bridge_tx_fwd_offload = mv88e6xxx_bridge_tx_fwd_offload,
-	.port_bridge_tx_fwd_unoffload = mv88e6xxx_bridge_tx_fwd_unoffload,
 };
 
 static int mv88e6xxx_register_switch(struct mv88e6xxx_chip *chip)