Merge branch 'net-dsa-mv88e6xxx-port-mtu-support'

Chris Packham says:

====================
net: dsa: mv88e6xxx: port mtu support

This series connects up the mv88e6xxx switches to the dsa infrastructure for
configuring the port MTU. The first patch is also a bug fix which might be a
candiatate for stable.

I've rebased this series on top of net-next/master to pick up Andrew's change
for the gigabit switches. Patch 1 and 2 are unchanged (aside from adding
Andrew's Reviewed-by). Patch 3 is reworked to make use of the existing mtu
support.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 6f01995..b8a3e8c 100644 (file)
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2699,6 +2699,8 @@ static int mv88e6xxx_get_max_mtu(struct dsa_switch *ds, int port)
 
        if (chip->info->ops->port_set_jumbo_size)
                return 10240;
+       else if (chip->info->ops->set_max_frame_size)
+               return 1632;
        return 1522;
 }
 
@@ -2710,6 +2712,8 @@ static int mv88e6xxx_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
        mv88e6xxx_reg_lock(chip);
        if (chip->info->ops->port_set_jumbo_size)
                ret = chip->info->ops->port_set_jumbo_size(chip, port, new_mtu);
+       else if (chip->info->ops->set_max_frame_size)
+               ret = chip->info->ops->set_max_frame_size(chip, new_mtu);
        else
                if (new_mtu > 1522)
                        ret = -EINVAL;
@@ -3450,6 +3454,7 @@ static const struct mv88e6xxx_ops mv88e6085_ops = {
        .vtu_getnext = mv88e6352_g1_vtu_getnext,
        .vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
        .phylink_validate = mv88e6185_phylink_validate,
+       .set_max_frame_size = mv88e6185_g1_set_max_frame_size,
 };
 
 static const struct mv88e6xxx_ops mv88e6095_ops = {
@@ -3478,6 +3483,7 @@ static const struct mv88e6xxx_ops mv88e6095_ops = {
        .vtu_getnext = mv88e6185_g1_vtu_getnext,
        .vtu_loadpurge = mv88e6185_g1_vtu_loadpurge,
        .phylink_validate = mv88e6185_phylink_validate,
+       .set_max_frame_size = mv88e6185_g1_set_max_frame_size,
 };
 
 static const struct mv88e6xxx_ops mv88e6097_ops = {
@@ -3494,7 +3500,6 @@ static const struct mv88e6xxx_ops mv88e6097_ops = {
        .port_set_frame_mode = mv88e6351_port_set_frame_mode,
        .port_set_egress_floods = mv88e6352_port_set_egress_floods,
        .port_set_ether_type = mv88e6351_port_set_ether_type,
-       .port_set_jumbo_size = mv88e6165_port_set_jumbo_size,
        .port_egress_rate_limiting = mv88e6095_port_egress_rate_limiting,
        .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
@@ -3516,6 +3521,7 @@ static const struct mv88e6xxx_ops mv88e6097_ops = {
        .vtu_getnext = mv88e6352_g1_vtu_getnext,
        .vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
        .phylink_validate = mv88e6185_phylink_validate,
+       .set_max_frame_size = mv88e6185_g1_set_max_frame_size,
 };
 
 static const struct mv88e6xxx_ops mv88e6123_ops = {
@@ -3550,6 +3556,7 @@ static const struct mv88e6xxx_ops mv88e6123_ops = {
        .vtu_getnext = mv88e6352_g1_vtu_getnext,
        .vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
        .phylink_validate = mv88e6185_phylink_validate,
+       .set_max_frame_size = mv88e6185_g1_set_max_frame_size,
 };
 
 static const struct mv88e6xxx_ops mv88e6131_ops = {
@@ -3939,6 +3946,7 @@ static const struct mv88e6xxx_ops mv88e6185_ops = {
        .vtu_getnext = mv88e6185_g1_vtu_getnext,
        .vtu_loadpurge = mv88e6185_g1_vtu_loadpurge,
        .phylink_validate = mv88e6185_phylink_validate,
+       .set_max_frame_size = mv88e6185_g1_set_max_frame_size,
 };
 
 static const struct mv88e6xxx_ops mv88e6190_ops = {
@@ -3959,6 +3967,7 @@ static const struct mv88e6xxx_ops mv88e6190_ops = {
        .port_set_frame_mode = mv88e6351_port_set_frame_mode,
        .port_set_egress_floods = mv88e6352_port_set_egress_floods,
        .port_set_ether_type = mv88e6351_port_set_ether_type,
+       .port_set_jumbo_size = mv88e6165_port_set_jumbo_size,
        .port_pause_limit = mv88e6390_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
@@ -4017,6 +4026,7 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = {
        .port_set_frame_mode = mv88e6351_port_set_frame_mode,
        .port_set_egress_floods = mv88e6352_port_set_egress_floods,
        .port_set_ether_type = mv88e6351_port_set_ether_type,
+       .port_set_jumbo_size = mv88e6165_port_set_jumbo_size,
        .port_pause_limit = mv88e6390_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,

diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h
index 1c541b0..2d70eac 100644 (file)
--- a/drivers/net/dsa/mv88e6xxx/chip.h
+++ b/drivers/net/dsa/mv88e6xxx/chip.h
@@ -552,6 +552,9 @@ struct mv88e6xxx_ops {
        void (*phylink_validate)(struct mv88e6xxx_chip *chip, int port,
                                 unsigned long *mask,
                                 struct phylink_link_state *state);
+
+       /* Max Frame Size */
+       int (*set_max_frame_size)(struct mv88e6xxx_chip *chip, int mtu);
 };
 
 struct mv88e6xxx_irq_ops {

diff --git a/drivers/net/dsa/mv88e6xxx/global1.c b/drivers/net/dsa/mv88e6xxx/global1.c
index ca3a7a7..f62aa83 100644 (file)
--- a/drivers/net/dsa/mv88e6xxx/global1.c
+++ b/drivers/net/dsa/mv88e6xxx/global1.c
@@ -196,6 +196,23 @@ int mv88e6185_g1_ppu_disable(struct mv88e6xxx_chip *chip)
        return mv88e6185_g1_wait_ppu_disabled(chip);
 }
 
+int mv88e6185_g1_set_max_frame_size(struct mv88e6xxx_chip *chip, int mtu)
+{
+       u16 val;
+       int err;
+
+       err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &val);
+       if (err)
+               return err;
+
+       val &= ~MV88E6185_G1_CTL1_MAX_FRAME_1632;
+
+       if (mtu > 1518)
+               val |= MV88E6185_G1_CTL1_MAX_FRAME_1632;
+
+       return mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, val);
+}
+
 /* Offset 0x10: IP-PRI Mapping Register 0
  * Offset 0x11: IP-PRI Mapping Register 1
  * Offset 0x12: IP-PRI Mapping Register 2

diff --git a/drivers/net/dsa/mv88e6xxx/global1.h b/drivers/net/dsa/mv88e6xxx/global1.h
index 5324c6f..1e3546f 100644 (file)
--- a/drivers/net/dsa/mv88e6xxx/global1.h
+++ b/drivers/net/dsa/mv88e6xxx/global1.h
@@ -282,6 +282,8 @@ int mv88e6250_g1_reset(struct mv88e6xxx_chip *chip);
 int mv88e6185_g1_ppu_enable(struct mv88e6xxx_chip *chip);
 int mv88e6185_g1_ppu_disable(struct mv88e6xxx_chip *chip);
 
+int mv88e6185_g1_set_max_frame_size(struct mv88e6xxx_chip *chip, int mtu);
+
 int mv88e6xxx_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port);
 int mv88e6320_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port);
 int mv88e6390_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port);