From 6e55f69846f0b11dd59a5d9ade44f4cc40eaa0ec Mon Sep 17 00:00:00 2001
From: Andrew Lunn <andrew@lunn.ch>
Date: Sat, 3 Dec 2016 04:45:16 +0100
Subject: [PATCH 1/5] net: dsa: mv88e6xxx: Reserved Management frames to CPU

Older devices have a couple of registers in global2. The mv88e6390
family has a single register in global1 behind which hides similar
configuration. Implement and op for this.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/dsa/mv88e6xxx/chip.c      | 35 ++++++++++++++++++++++
 drivers/net/dsa/mv88e6xxx/global1.c   | 27 +++++++++++++++++
 drivers/net/dsa/mv88e6xxx/global1.h   |  1 +
 drivers/net/dsa/mv88e6xxx/global2.c   | 43 ++++++++++++++++-----------
 drivers/net/dsa/mv88e6xxx/global2.h   |  6 ++++
 drivers/net/dsa/mv88e6xxx/mv88e6xxx.h |  3 ++
 6 files changed, 97 insertions(+), 18 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 9c14aaad5103e..b2b6fe3ef4bf7 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2899,6 +2899,17 @@ static int mv88e6xxx_setup(struct dsa_switch *ds)
 			goto unlock;
 	}
 
+	/* Some generations have the configuration of sending reserved
+	 * management frames to the CPU in global2, others in
+	 * global1. Hence it does not fit the two setup functions
+	 * above.
+	 */
+	if (chip->info->ops->mgmt_rsvd2cpu) {
+		err = chip->info->ops->mgmt_rsvd2cpu(chip);
+		if (err)
+			goto unlock;
+	}
+
 unlock:
 	mutex_unlock(&chip->reg_lock);
 
@@ -3221,6 +3232,7 @@ static const struct mv88e6xxx_ops mv88e6085_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6095_ops = {
@@ -3237,6 +3249,7 @@ static const struct mv88e6xxx_ops mv88e6095_ops = {
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
 	.stats_get_stats = mv88e6095_stats_get_stats,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6097_ops = {
@@ -3257,6 +3270,7 @@ static const struct mv88e6xxx_ops mv88e6097_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6123_ops = {
@@ -3275,6 +3289,7 @@ static const struct mv88e6xxx_ops mv88e6123_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6131_ops = {
@@ -3295,6 +3310,7 @@ static const struct mv88e6xxx_ops mv88e6131_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6161_ops = {
@@ -3315,6 +3331,7 @@ static const struct mv88e6xxx_ops mv88e6161_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6165_ops = {
@@ -3331,6 +3348,7 @@ static const struct mv88e6xxx_ops mv88e6165_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6171_ops = {
@@ -3352,6 +3370,7 @@ static const struct mv88e6xxx_ops mv88e6171_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6172_ops = {
@@ -3375,6 +3394,7 @@ static const struct mv88e6xxx_ops mv88e6172_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6175_ops = {
@@ -3396,6 +3416,7 @@ static const struct mv88e6xxx_ops mv88e6175_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6176_ops = {
@@ -3419,6 +3440,7 @@ static const struct mv88e6xxx_ops mv88e6176_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6185_ops = {
@@ -3437,6 +3459,7 @@ static const struct mv88e6xxx_ops mv88e6185_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6190_ops = {
@@ -3459,6 +3482,7 @@ static const struct mv88e6xxx_ops mv88e6190_ops = {
 	.stats_get_stats = mv88e6390_stats_get_stats,
 	.g1_set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6390_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6390_g1_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6190x_ops = {
@@ -3481,6 +3505,7 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = {
 	.stats_get_stats = mv88e6390_stats_get_stats,
 	.g1_set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6390_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6390_g1_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6191_ops = {
@@ -3503,6 +3528,7 @@ static const struct mv88e6xxx_ops mv88e6191_ops = {
 	.stats_get_stats = mv88e6390_stats_get_stats,
 	.g1_set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6390_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6390_g1_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6240_ops = {
@@ -3526,6 +3552,7 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6290_ops = {
@@ -3548,6 +3575,7 @@ static const struct mv88e6xxx_ops mv88e6290_ops = {
 	.stats_get_stats = mv88e6390_stats_get_stats,
 	.g1_set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6390_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6390_g1_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6320_ops = {
@@ -3570,6 +3598,7 @@ static const struct mv88e6xxx_ops mv88e6320_ops = {
 	.stats_get_stats = mv88e6320_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6321_ops = {
@@ -3613,6 +3642,7 @@ static const struct mv88e6xxx_ops mv88e6350_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6351_ops = {
@@ -3634,6 +3664,7 @@ static const struct mv88e6xxx_ops mv88e6351_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6352_ops = {
@@ -3657,6 +3688,7 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
 	.stats_get_stats = mv88e6095_stats_get_stats,
 	.g1_set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6095_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6095_g2_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6390_ops = {
@@ -3679,6 +3711,7 @@ static const struct mv88e6xxx_ops mv88e6390_ops = {
 	.stats_get_stats = mv88e6390_stats_get_stats,
 	.g1_set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6390_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6390_g1_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6390x_ops = {
@@ -3701,6 +3734,7 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = {
 	.stats_get_stats = mv88e6390_stats_get_stats,
 	.g1_set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6390_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6390_g1_mgmt_rsvd2cpu,
 };
 
 static const struct mv88e6xxx_ops mv88e6391_ops = {
@@ -3723,6 +3757,7 @@ static const struct mv88e6xxx_ops mv88e6391_ops = {
 	.stats_get_stats = mv88e6390_stats_get_stats,
 	.g1_set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.g1_set_egress_port = mv88e6390_g1_set_egress_port,
+	.mgmt_rsvd2cpu = mv88e6390_g1_mgmt_rsvd2cpu,
 };
 
 static int mv88e6xxx_verify_madatory_ops(struct mv88e6xxx_chip *chip,
diff --git a/drivers/net/dsa/mv88e6xxx/global1.c b/drivers/net/dsa/mv88e6xxx/global1.c
index 688547026e15f..44136ee015c3a 100644
--- a/drivers/net/dsa/mv88e6xxx/global1.c
+++ b/drivers/net/dsa/mv88e6xxx/global1.c
@@ -102,6 +102,33 @@ int mv88e6390_g1_set_cpu_port(struct mv88e6xxx_chip *chip, int port)
 					  port);
 }
 
+int mv88e6390_g1_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip)
+{
+	int err;
+
+	/* 01:c2:80:00:00:00:00-01:c2:80:00:00:00:07 are Management */
+	err = mv88e6390_g1_monitor_write(
+		chip, GLOBAL_MONITOR_CONTROL_0180C280000000XLO, 0xff);
+	if (err)
+		return err;
+
+	/* 01:c2:80:00:00:00:08-01:c2:80:00:00:00:0f are Management */
+	err = mv88e6390_g1_monitor_write(
+		chip, GLOBAL_MONITOR_CONTROL_0180C280000000XHI, 0xff);
+	if (err)
+		return err;
+
+	/* 01:c2:80:00:00:00:20-01:c2:80:00:00:00:27 are Management */
+	err = mv88e6390_g1_monitor_write(
+		chip, GLOBAL_MONITOR_CONTROL_0180C280000002XLO, 0xff);
+	if (err)
+		return err;
+
+	/* 01:c2:80:00:00:00:28-01:c2:80:00:00:00:2f are Management */
+	return mv88e6390_g1_monitor_write(
+		chip, GLOBAL_MONITOR_CONTROL_0180C280000002XHI, 0xff);
+}
+
 /* Offset 0x1c: Global Control 2 */
 
 int mv88e6390_g1_stats_set_histogram(struct mv88e6xxx_chip *chip)
diff --git a/drivers/net/dsa/mv88e6xxx/global1.h b/drivers/net/dsa/mv88e6xxx/global1.h
index 0c979550052fd..cb61378829e60 100644
--- a/drivers/net/dsa/mv88e6xxx/global1.h
+++ b/drivers/net/dsa/mv88e6xxx/global1.h
@@ -29,5 +29,6 @@ int mv88e6095_g1_set_egress_port(struct mv88e6xxx_chip *chip, int port);
 int mv88e6390_g1_set_egress_port(struct mv88e6xxx_chip *chip, int port);
 int mv88e6095_g1_set_cpu_port(struct mv88e6xxx_chip *chip, int port);
 int mv88e6390_g1_set_cpu_port(struct mv88e6xxx_chip *chip, int port);
+int mv88e6390_g1_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip);
 
 #endif /* _MV88E6XXX_GLOBAL1_H */
diff --git a/drivers/net/dsa/mv88e6xxx/global2.c b/drivers/net/dsa/mv88e6xxx/global2.c
index 536a27c9735fd..3e77071949ab0 100644
--- a/drivers/net/dsa/mv88e6xxx/global2.c
+++ b/drivers/net/dsa/mv88e6xxx/global2.c
@@ -38,6 +38,31 @@ static int mv88e6xxx_g2_wait(struct mv88e6xxx_chip *chip, int reg, u16 mask)
 	return mv88e6xxx_wait(chip, ADDR_GLOBAL2, reg, mask);
 }
 
+/* Offset 0x02: Management Enable 2x */
+/* Offset 0x03: Management Enable 0x */
+
+int mv88e6095_g2_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip)
+{
+	int err;
+
+	/* Consider the frames with reserved multicast destination
+	 * addresses matching 01:80:c2:00:00:2x as MGMT.
+	 */
+	if (mv88e6xxx_has(chip, MV88E6XXX_FLAG_G2_MGMT_EN_2X)) {
+		err = mv88e6xxx_g2_write(chip, GLOBAL2_MGMT_EN_2X, 0xffff);
+		if (err)
+			return err;
+	}
+
+	/* Consider the frames with reserved multicast destination
+	 * addresses matching 01:80:c2:00:00:0x as MGMT.
+	 */
+	if (mv88e6xxx_has(chip, MV88E6XXX_FLAG_G2_MGMT_EN_0X))
+		return mv88e6xxx_g2_write(chip, GLOBAL2_MGMT_EN_0X, 0xffff);
+
+	return 0;
+}
+
 /* Offset 0x06: Device Mapping Table register */
 
 static int mv88e6xxx_g2_device_mapping_write(struct mv88e6xxx_chip *chip,
@@ -567,24 +592,6 @@ int mv88e6xxx_g2_setup(struct mv88e6xxx_chip *chip)
 	u16 reg;
 	int err;
 
-	if (mv88e6xxx_has(chip, MV88E6XXX_FLAG_G2_MGMT_EN_2X)) {
-		/* Consider the frames with reserved multicast destination
-		 * addresses matching 01:80:c2:00:00:2x as MGMT.
-		 */
-		err = mv88e6xxx_g2_write(chip, GLOBAL2_MGMT_EN_2X, 0xffff);
-		if (err)
-			return err;
-	}
-
-	if (mv88e6xxx_has(chip, MV88E6XXX_FLAG_G2_MGMT_EN_0X)) {
-		/* Consider the frames with reserved multicast destination
-		 * addresses matching 01:80:c2:00:00:0x as MGMT.
-		 */
-		err = mv88e6xxx_g2_write(chip, GLOBAL2_MGMT_EN_0X, 0xffff);
-		if (err)
-			return err;
-	}
-
 	/* Ignore removed tag data on doubly tagged packets, disable
 	 * flow control messages, force flow control priority to the
 	 * highest, and send all special multicast frames to the CPU
diff --git a/drivers/net/dsa/mv88e6xxx/global2.h b/drivers/net/dsa/mv88e6xxx/global2.h
index 1eb3ddd215512..9aefb7d8b0ad7 100644
--- a/drivers/net/dsa/mv88e6xxx/global2.h
+++ b/drivers/net/dsa/mv88e6xxx/global2.h
@@ -35,6 +35,7 @@ int mv88e6xxx_g2_set_eeprom16(struct mv88e6xxx_chip *chip,
 int mv88e6xxx_g2_setup(struct mv88e6xxx_chip *chip);
 int mv88e6xxx_g2_irq_setup(struct mv88e6xxx_chip *chip);
 void mv88e6xxx_g2_irq_free(struct mv88e6xxx_chip *chip);
+int mv88e6095_g2_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip);
 
 #else /* !CONFIG_NET_DSA_MV88E6XXX_GLOBAL2 */
 
@@ -94,6 +95,11 @@ static inline void mv88e6xxx_g2_irq_free(struct mv88e6xxx_chip *chip)
 {
 }
 
+static inline int mv88e6095_g2_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip)
+{
+	return -EOPNOTSUPP;
+}
+
 #endif /* CONFIG_NET_DSA_MV88E6XXX_GLOBAL2 */
 
 #endif /* _MV88E6XXX_GLOBAL2_H */
diff --git a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
index 9dd94d7f58d69..d9ffa96fe875a 100644
--- a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
@@ -851,6 +851,9 @@ struct mv88e6xxx_ops {
 				uint64_t *data);
 	int (*g1_set_cpu_port)(struct mv88e6xxx_chip *chip, int port);
 	int (*g1_set_egress_port)(struct mv88e6xxx_chip *chip, int port);
+
+	/* Can be either in g1 or g2, so don't use a prefix */
+	int (*mgmt_rsvd2cpu)(struct mv88e6xxx_chip *chip);
 };
 
 #define STATS_TYPE_PORT		BIT(0)

From 5f4366660d65aca15e5887bd04c9c0140a658e40 Mon Sep 17 00:00:00 2001
From: Andrew Lunn <andrew@lunn.ch>
Date: Sat, 3 Dec 2016 04:45:17 +0100
Subject: [PATCH 2/5] net: dsa: mv88e6xxx: Refactor setting of jumbo frames

Some switches support jumbo frames. Refactor this code into operations
in the ops structure.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/dsa/mv88e6xxx/chip.c      | 26 ++++++++++++++++++++++----
 drivers/net/dsa/mv88e6xxx/mv88e6xxx.h |  1 +
 drivers/net/dsa/mv88e6xxx/port.c      | 14 ++++++++++++++
 drivers/net/dsa/mv88e6xxx/port.h      |  2 +-
 4 files changed, 38 insertions(+), 5 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index b2b6fe3ef4bf7..db1542e05e622 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2582,10 +2582,6 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
 	    mv88e6xxx_6185_family(chip))
 		reg = PORT_CONTROL_2_MAP_DA;
 
-	if (mv88e6xxx_6352_family(chip) || mv88e6xxx_6351_family(chip) ||
-	    mv88e6xxx_6165_family(chip) || mv88e6xxx_6320_family(chip))
-		reg |= PORT_CONTROL_2_JUMBO_10240;
-
 	if (mv88e6xxx_6095_family(chip) || mv88e6xxx_6185_family(chip)) {
 		/* Set the upstream port this port should use */
 		reg |= dsa_upstream_port(ds);
@@ -2604,6 +2600,12 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
 			return err;
 	}
 
+	if (chip->info->ops->port_jumbo_config) {
+		err = chip->info->ops->port_jumbo_config(chip, port);
+		if (err)
+			return err;
+	}
+
 	/* Port Association Vector: when learning source addresses
 	 * of packets, add the address to the address database using
 	 * a port bitmap that has only the bit for this port set and
@@ -2663,6 +2665,7 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
 					   0x0001);
 		if (err)
 			return err;
+
 	} else if (mv88e6xxx_6185_family(chip) || mv88e6xxx_6095_family(chip)) {
 		err = mv88e6xxx_port_write(chip, port, PORT_RATE_CONTROL,
 					   0x0000);
@@ -3264,6 +3267,7 @@ static const struct mv88e6xxx_ops mv88e6097_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3304,6 +3308,7 @@ static const struct mv88e6xxx_ops mv88e6131_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3325,6 +3330,7 @@ static const struct mv88e6xxx_ops mv88e6161_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3364,6 +3370,7 @@ static const struct mv88e6xxx_ops mv88e6171_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3388,6 +3395,7 @@ static const struct mv88e6xxx_ops mv88e6172_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3410,6 +3418,7 @@ static const struct mv88e6xxx_ops mv88e6175_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3434,6 +3443,7 @@ static const struct mv88e6xxx_ops mv88e6176_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3546,6 +3556,7 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3592,6 +3603,7 @@ static const struct mv88e6xxx_ops mv88e6320_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
@@ -3615,6 +3627,7 @@ static const struct mv88e6xxx_ops mv88e6321_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
@@ -3636,6 +3649,7 @@ static const struct mv88e6xxx_ops mv88e6350_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3658,6 +3672,7 @@ static const struct mv88e6xxx_ops mv88e6351_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3682,6 +3697,7 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3704,6 +3720,7 @@ static const struct mv88e6xxx_ops mv88e6390_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6390_g1_stats_snapshot,
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
@@ -3727,6 +3744,7 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.stats_snapshot = mv88e6390_g1_stats_snapshot,
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
diff --git a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
index d9ffa96fe875a..d4f18b8209ec8 100644
--- a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
@@ -833,6 +833,7 @@ struct mv88e6xxx_ops {
 					bool on);
 	int (*port_set_ether_type)(struct mv88e6xxx_chip *chip, int port,
 				   u16 etype);
+	int (*port_jumbo_config)(struct mv88e6xxx_chip *chip, int port);
 
 	/* Snapshot the statistics for a port. The statistics can then
 	 * be read back a leisure but still with a consistent view.
diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
index cf6674911abfb..a739129ce5e5f 100644
--- a/drivers/net/dsa/mv88e6xxx/port.c
+++ b/drivers/net/dsa/mv88e6xxx/port.c
@@ -607,6 +607,20 @@ int mv88e6xxx_port_set_8021q_mode(struct mv88e6xxx_chip *chip, int port,
 	return 0;
 }
 
+int mv88e6165_port_jumbo_config(struct mv88e6xxx_chip *chip, int port)
+{
+	u16 reg;
+	int err;
+
+	err = mv88e6xxx_port_read(chip, port, PORT_CONTROL_2, &reg);
+	if (err)
+		return err;
+
+	reg |= PORT_CONTROL_2_JUMBO_10240;
+
+	return mv88e6xxx_port_write(chip, port, PORT_CONTROL_2, reg);
+}
+
 /* Offset 0x0f: Port Ether type */
 
 int mv88e6351_port_set_ether_type(struct mv88e6xxx_chip *chip, int port,
diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h
index 83cb3440e067b..9e25735c287ef 100644
--- a/drivers/net/dsa/mv88e6xxx/port.h
+++ b/drivers/net/dsa/mv88e6xxx/port.h
@@ -62,6 +62,6 @@ int mv88e6351_port_set_egress_unknowns(struct mv88e6xxx_chip *chip, int port,
 				       bool on);
 int mv88e6351_port_set_ether_type(struct mv88e6xxx_chip *chip, int port,
 				  u16 etype);
-
+int mv88e6165_port_jumbo_config(struct mv88e6xxx_chip *chip, int port);
 
 #endif /* _MV88E6XXX_PORT_H */

From ef70b1119ee8e788f7f4ac22fe1f016363d7921f Mon Sep 17 00:00:00 2001
From: Andrew Lunn <andrew@lunn.ch>
Date: Sat, 3 Dec 2016 04:45:18 +0100
Subject: [PATCH 3/5] net: dsa: mv88e6xxx: Refactor egress rate limiting

There are two different rate limiting configurations, depending on the
switch generation. Refactor this into ops.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/dsa/mv88e6xxx/chip.c      | 31 ++++++++++++++++-----------
 drivers/net/dsa/mv88e6xxx/mv88e6xxx.h |  2 ++
 drivers/net/dsa/mv88e6xxx/port.c      | 12 +++++++++++
 drivers/net/dsa/mv88e6xxx/port.h      |  2 ++
 4 files changed, 35 insertions(+), 12 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index db1542e05e622..1b0917e448099 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2657,18 +2657,8 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
 			return err;
 	}
 
-	/* Rate Control: disable ingress rate limiting. */
-	if (mv88e6xxx_6352_family(chip) || mv88e6xxx_6351_family(chip) ||
-	    mv88e6xxx_6165_family(chip) || mv88e6xxx_6097_family(chip) ||
-	    mv88e6xxx_6320_family(chip)) {
-		err = mv88e6xxx_port_write(chip, port, PORT_RATE_CONTROL,
-					   0x0001);
-		if (err)
-			return err;
-
-	} else if (mv88e6xxx_6185_family(chip) || mv88e6xxx_6095_family(chip)) {
-		err = mv88e6xxx_port_write(chip, port, PORT_RATE_CONTROL,
-					   0x0000);
+	if (chip->info->ops->port_egress_rate_limiting) {
+		err = chip->info->ops->port_egress_rate_limiting(chip, port);
 		if (err)
 			return err;
 	}
@@ -3229,6 +3219,7 @@ static const struct mv88e6xxx_ops mv88e6085_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3268,6 +3259,7 @@ static const struct mv88e6xxx_ops mv88e6097_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6095_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3309,6 +3301,7 @@ static const struct mv88e6xxx_ops mv88e6131_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3331,6 +3324,7 @@ static const struct mv88e6xxx_ops mv88e6161_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3371,6 +3365,7 @@ static const struct mv88e6xxx_ops mv88e6171_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3396,6 +3391,7 @@ static const struct mv88e6xxx_ops mv88e6172_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3419,6 +3415,7 @@ static const struct mv88e6xxx_ops mv88e6175_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3444,6 +3441,7 @@ static const struct mv88e6xxx_ops mv88e6176_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3463,6 +3461,7 @@ static const struct mv88e6xxx_ops mv88e6185_ops = {
 	.port_set_speed = mv88e6185_port_set_speed,
 	.port_set_frame_mode = mv88e6085_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6085_port_set_egress_unknowns,
+	.port_egress_rate_limiting = mv88e6095_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3557,6 +3556,7 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3604,6 +3604,7 @@ static const struct mv88e6xxx_ops mv88e6320_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
@@ -3628,6 +3629,7 @@ static const struct mv88e6xxx_ops mv88e6321_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
@@ -3650,6 +3652,7 @@ static const struct mv88e6xxx_ops mv88e6350_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3673,6 +3676,7 @@ static const struct mv88e6xxx_ops mv88e6351_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3698,6 +3702,7 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3721,6 +3726,7 @@ static const struct mv88e6xxx_ops mv88e6390_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6390_g1_stats_snapshot,
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
@@ -3745,6 +3751,7 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
+	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
 	.stats_snapshot = mv88e6390_g1_stats_snapshot,
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
diff --git a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
index d4f18b8209ec8..65aa564daf828 100644
--- a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
@@ -835,6 +835,8 @@ struct mv88e6xxx_ops {
 				   u16 etype);
 	int (*port_jumbo_config)(struct mv88e6xxx_chip *chip, int port);
 
+	int (*port_egress_rate_limiting)(struct mv88e6xxx_chip *chip, int port);
+
 	/* Snapshot the statistics for a port. The statistics can then
 	 * be read back a leisure but still with a consistent view.
 	 */
diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
index a739129ce5e5f..d22c7b0e0f769 100644
--- a/drivers/net/dsa/mv88e6xxx/port.c
+++ b/drivers/net/dsa/mv88e6xxx/port.c
@@ -621,6 +621,18 @@ int mv88e6165_port_jumbo_config(struct mv88e6xxx_chip *chip, int port)
 	return mv88e6xxx_port_write(chip, port, PORT_CONTROL_2, reg);
 }
 
+/* Offset 0x09: Port Rate Control */
+
+int mv88e6095_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port)
+{
+	return mv88e6xxx_port_write(chip, port, PORT_RATE_CONTROL, 0x0000);
+}
+
+int mv88e6097_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port)
+{
+	return mv88e6xxx_port_write(chip, port, PORT_RATE_CONTROL, 0x0001);
+}
+
 /* Offset 0x0f: Port Ether type */
 
 int mv88e6351_port_set_ether_type(struct mv88e6xxx_chip *chip, int port,
diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h
index 9e25735c287ef..9bad597280d6d 100644
--- a/drivers/net/dsa/mv88e6xxx/port.h
+++ b/drivers/net/dsa/mv88e6xxx/port.h
@@ -63,5 +63,7 @@ int mv88e6351_port_set_egress_unknowns(struct mv88e6xxx_chip *chip, int port,
 int mv88e6351_port_set_ether_type(struct mv88e6xxx_chip *chip, int port,
 				  u16 etype);
 int mv88e6165_port_jumbo_config(struct mv88e6xxx_chip *chip, int port);
+int mv88e6095_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port);
+int mv88e6097_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port);
 
 #endif /* _MV88E6XXX_PORT_H */

From b35d322a1d9330597754d5e8d5f76932fad79c1a Mon Sep 17 00:00:00 2001
From: Andrew Lunn <andrew@lunn.ch>
Date: Sat, 3 Dec 2016 04:45:19 +0100
Subject: [PATCH 4/5] net: dsa: mv88e6xxx: Refactor pause configuration

The mv88e6390 has a different mechanism for configuring pause.
Refactor the code into an ops function, and for the moment, don't add
any mv88e6390 code yet.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/dsa/mv88e6xxx/chip.c      | 28 +++++++++++++++++++--------
 drivers/net/dsa/mv88e6xxx/mv88e6xxx.h |  1 +
 drivers/net/dsa/mv88e6xxx/port.c      | 11 +++++++++++
 drivers/net/dsa/mv88e6xxx/port.h      |  1 +
 4 files changed, 33 insertions(+), 8 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 1b0917e448099..3ddb1f79e7094 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2625,17 +2625,15 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
 	if (err)
 		return err;
 
-	if (mv88e6xxx_6352_family(chip) || mv88e6xxx_6351_family(chip) ||
-	    mv88e6xxx_6165_family(chip) || mv88e6xxx_6097_family(chip) ||
-	    mv88e6xxx_6320_family(chip)) {
-		/* Do not limit the period of time that this port can
-		 * be paused for by the remote end or the period of
-		 * time that this port can pause the remote end.
-		 */
-		err = mv88e6xxx_port_write(chip, port, PORT_PAUSE_CTRL, 0x0000);
+	if (chip->info->ops->port_pause_config) {
+		err = chip->info->ops->port_pause_config(chip, port);
 		if (err)
 			return err;
+	}
 
+	if (mv88e6xxx_6352_family(chip) || mv88e6xxx_6351_family(chip) ||
+	    mv88e6xxx_6165_family(chip) || mv88e6xxx_6097_family(chip) ||
+	    mv88e6xxx_6320_family(chip)) {
 		/* Port ATU control: disable limiting the number of
 		 * address database entries that this port is allowed
 		 * to use.
@@ -3220,6 +3218,7 @@ static const struct mv88e6xxx_ops mv88e6085_ops = {
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3260,6 +3259,7 @@ static const struct mv88e6xxx_ops mv88e6097_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6095_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3302,6 +3302,7 @@ static const struct mv88e6xxx_ops mv88e6131_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3325,6 +3326,7 @@ static const struct mv88e6xxx_ops mv88e6161_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6xxx_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3366,6 +3368,7 @@ static const struct mv88e6xxx_ops mv88e6171_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3392,6 +3395,7 @@ static const struct mv88e6xxx_ops mv88e6172_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3416,6 +3420,7 @@ static const struct mv88e6xxx_ops mv88e6175_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3442,6 +3447,7 @@ static const struct mv88e6xxx_ops mv88e6176_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3557,6 +3563,7 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3605,6 +3612,7 @@ static const struct mv88e6xxx_ops mv88e6320_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
@@ -3630,6 +3638,7 @@ static const struct mv88e6xxx_ops mv88e6321_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
@@ -3653,6 +3662,7 @@ static const struct mv88e6xxx_ops mv88e6350_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3677,6 +3687,7 @@ static const struct mv88e6xxx_ops mv88e6351_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
@@ -3703,6 +3714,7 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6097_port_pause_config,
 	.stats_snapshot = mv88e6320_g1_stats_snapshot,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
diff --git a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
index 65aa564daf828..3b1f3ab490b95 100644
--- a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
@@ -836,6 +836,7 @@ struct mv88e6xxx_ops {
 	int (*port_jumbo_config)(struct mv88e6xxx_chip *chip, int port);
 
 	int (*port_egress_rate_limiting)(struct mv88e6xxx_chip *chip, int port);
+	int (*port_pause_config)(struct mv88e6xxx_chip *chip, int port);
 
 	/* Snapshot the statistics for a port. The statistics can then
 	 * be read back a leisure but still with a consistent view.
diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
index d22c7b0e0f769..8d14833b2e490 100644
--- a/drivers/net/dsa/mv88e6xxx/port.c
+++ b/drivers/net/dsa/mv88e6xxx/port.c
@@ -304,6 +304,17 @@ int mv88e6390x_port_set_speed(struct mv88e6xxx_chip *chip, int port, int speed)
 	return mv88e6xxx_port_set_speed(chip, port, speed, true, true);
 }
 
+/* Offset 0x02: Pause Control
+ *
+ * Do not limit the period of time that this port can be paused for by
+ * the remote end or the period of time that this port can pause the
+ * remote end.
+ */
+int mv88e6097_port_pause_config(struct mv88e6xxx_chip *chip, int port)
+{
+	return mv88e6xxx_port_write(chip, port, PORT_PAUSE_CTRL, 0x0000);
+}
+
 /* Offset 0x04: Port Control Register */
 
 static const char * const mv88e6xxx_port_state_names[] = {
diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h
index 9bad597280d6d..8c964cfd90322 100644
--- a/drivers/net/dsa/mv88e6xxx/port.h
+++ b/drivers/net/dsa/mv88e6xxx/port.h
@@ -65,5 +65,6 @@ int mv88e6351_port_set_ether_type(struct mv88e6xxx_chip *chip, int port,
 int mv88e6165_port_jumbo_config(struct mv88e6xxx_chip *chip, int port);
 int mv88e6095_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port);
 int mv88e6097_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port);
+int mv88e6097_port_pause_config(struct mv88e6xxx_chip *chip, int port);
 
 #endif /* _MV88E6XXX_PORT_H */

From 3ce0e65eb6059d3d4e56bbb17aee34f2740844be Mon Sep 17 00:00:00 2001
From: Andrew Lunn <andrew@lunn.ch>
Date: Sat, 3 Dec 2016 04:45:20 +0100
Subject: [PATCH 5/5] net: dsa: mv88e6xxx: Implement mv88e6390 pause control

The mv88e6390 has a number flow control registers accessed via the
Flow Control register. Use these to set the pause control.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/dsa/mv88e6xxx/chip.c      |  7 +++++++
 drivers/net/dsa/mv88e6xxx/mv88e6xxx.h |  2 ++
 drivers/net/dsa/mv88e6xxx/port.c      | 13 +++++++++++++
 drivers/net/dsa/mv88e6xxx/port.h      |  1 +
 4 files changed, 23 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 3ddb1f79e7094..ca453f3243cd5 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -3490,6 +3490,7 @@ static const struct mv88e6xxx_ops mv88e6190_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_pause_config = mv88e6390_port_pause_config,
 	.stats_snapshot = mv88e6390_g1_stats_snapshot,
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
@@ -3513,6 +3514,7 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_pause_config = mv88e6390_port_pause_config,
 	.stats_snapshot = mv88e6390_g1_stats_snapshot,
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
@@ -3536,6 +3538,7 @@ static const struct mv88e6xxx_ops mv88e6191_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_pause_config = mv88e6390_port_pause_config,
 	.stats_snapshot = mv88e6390_g1_stats_snapshot,
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
@@ -3586,6 +3589,7 @@ static const struct mv88e6xxx_ops mv88e6290_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_pause_config = mv88e6390_port_pause_config,
 	.stats_snapshot = mv88e6390_g1_stats_snapshot,
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
@@ -3739,6 +3743,7 @@ static const struct mv88e6xxx_ops mv88e6390_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6390_port_pause_config,
 	.stats_snapshot = mv88e6390_g1_stats_snapshot,
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
@@ -3764,6 +3769,7 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = {
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
 	.port_jumbo_config = mv88e6165_port_jumbo_config,
 	.port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
+	.port_pause_config = mv88e6390_port_pause_config,
 	.stats_snapshot = mv88e6390_g1_stats_snapshot,
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
@@ -3787,6 +3793,7 @@ static const struct mv88e6xxx_ops mv88e6391_ops = {
 	.port_set_frame_mode = mv88e6351_port_set_frame_mode,
 	.port_set_egress_unknowns = mv88e6351_port_set_egress_unknowns,
 	.port_set_ether_type = mv88e6351_port_set_ether_type,
+	.port_pause_config = mv88e6390_port_pause_config,
 	.stats_snapshot = mv88e6390_g1_stats_snapshot,
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
diff --git a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
index 3b1f3ab490b95..13c7cc4434547 100644
--- a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
@@ -78,6 +78,8 @@
 #define PORT_PCS_CTRL_SPEED_10000	(0x03) /* 6390X */
 #define PORT_PCS_CTRL_SPEED_UNFORCED	(0x03)
 #define PORT_PAUSE_CTRL		0x02
+#define PORT_FLOW_CTRL_LIMIT_IN		((0x00 << 8) | BIT(15))
+#define PORT_FLOW_CTRL_LIMIT_OUT	((0x01 << 8) | BIT(15))
 #define PORT_SWITCH_ID		0x03
 #define PORT_SWITCH_ID_PROD_NUM_6085	0x04a
 #define PORT_SWITCH_ID_PROD_NUM_6095	0x095
diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
index 8d14833b2e490..0db7fa0373ae2 100644
--- a/drivers/net/dsa/mv88e6xxx/port.c
+++ b/drivers/net/dsa/mv88e6xxx/port.c
@@ -315,6 +315,19 @@ int mv88e6097_port_pause_config(struct mv88e6xxx_chip *chip, int port)
 	return mv88e6xxx_port_write(chip, port, PORT_PAUSE_CTRL, 0x0000);
 }
 
+int mv88e6390_port_pause_config(struct mv88e6xxx_chip *chip, int port)
+{
+	int err;
+
+	err = mv88e6xxx_port_write(chip, port, PORT_PAUSE_CTRL,
+				   PORT_FLOW_CTRL_LIMIT_IN | 0);
+	if (err)
+		return err;
+
+	return mv88e6xxx_port_write(chip, port, PORT_PAUSE_CTRL,
+				    PORT_FLOW_CTRL_LIMIT_OUT | 0);
+}
+
 /* Offset 0x04: Port Control Register */
 
 static const char * const mv88e6xxx_port_state_names[] = {
diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h
index 8c964cfd90322..7b3bacaacbfe1 100644
--- a/drivers/net/dsa/mv88e6xxx/port.h
+++ b/drivers/net/dsa/mv88e6xxx/port.h
@@ -66,5 +66,6 @@ int mv88e6165_port_jumbo_config(struct mv88e6xxx_chip *chip, int port);
 int mv88e6095_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port);
 int mv88e6097_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port);
 int mv88e6097_port_pause_config(struct mv88e6xxx_chip *chip, int port);
+int mv88e6390_port_pause_config(struct mv88e6xxx_chip *chip, int port);
 
 #endif /* _MV88E6XXX_PORT_H */