net: dsa: mv88e6xxx: rework pause limit operation

All Marvell chips supporting Pause frames limiting use 1-byte value for
input and output.

Old chips have both bytes adjacent in a 16-bit register. New ones have
an indirect table using 8-bit data.

The mv88e6xxx library functions (such as in port.c) must not contain
driver logic, but only generic helpers. This patch changes the
port_pause_config operation for port_pause_limit taking two u8 arguments
for input and output limits. There is no functional changes.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
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 f33b83bf3ee87f28a505ee7cb114855e35d30608..a0f450cb45fb4008f334766ae7f8d3b8c9e10b61 100644 (file)
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1901,8 +1901,8 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
        if (err)
                return err;
 
-       if (chip->info->ops->port_pause_config) {
-               err = chip->info->ops->port_pause_config(chip, port);
+       if (chip->info->ops->port_pause_limit) {
+               err = chip->info->ops->port_pause_limit(chip, port, 0, 0);
                if (err)
                        return err;
        }
@@ -2362,7 +2362,7 @@ static const struct mv88e6xxx_ops mv88e6085_ops = {
        .port_set_egress_floods = mv88e6352_port_set_egress_floods,
        .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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6xxx_g1_stats_snapshot,
@@ -2417,7 +2417,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6xxx_g1_stats_snapshot,
@@ -2473,7 +2473,7 @@ static const struct mv88e6xxx_ops mv88e6131_ops = {
        .port_set_upstream_port = mv88e6095_port_set_upstream_port,
        .port_jumbo_config = mv88e6165_port_jumbo_config,
        .port_egress_rate_limiting = mv88e6097_port_egress_rate_limiting,
-       .port_pause_config = mv88e6097_port_pause_config,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .stats_snapshot = mv88e6xxx_g1_stats_snapshot,
        .stats_get_sset_count = mv88e6095_stats_get_sset_count,
        .stats_get_strings = mv88e6095_stats_get_strings,
@@ -2506,7 +2506,7 @@ static const struct mv88e6xxx_ops mv88e6141_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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6390_g1_stats_snapshot,
@@ -2536,7 +2536,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
@@ -2590,7 +2590,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
@@ -2623,7 +2623,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
@@ -2655,7 +2655,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
@@ -2688,7 +2688,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
@@ -2747,7 +2747,7 @@ 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_pause_config = mv88e6390_port_pause_config,
+       .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,
        .stats_snapshot = mv88e6390_g1_stats_snapshot,
@@ -2780,7 +2780,7 @@ 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_pause_config = mv88e6390_port_pause_config,
+       .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,
        .stats_snapshot = mv88e6390_g1_stats_snapshot,
@@ -2813,7 +2813,7 @@ static const struct mv88e6xxx_ops mv88e6191_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_pause_config = mv88e6390_port_pause_config,
+       .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,
        .stats_snapshot = mv88e6390_g1_stats_snapshot,
@@ -2848,7 +2848,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
@@ -2880,7 +2880,7 @@ static const struct mv88e6xxx_ops mv88e6290_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_pause_config = mv88e6390_port_pause_config,
+       .port_pause_limit = mv88e6390_port_pause_limit,
        .port_set_cmode = mv88e6390x_port_set_cmode,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
@@ -2915,7 +2915,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
@@ -2946,7 +2946,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
@@ -2977,7 +2977,7 @@ static const struct mv88e6xxx_ops mv88e6341_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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6390_g1_stats_snapshot,
@@ -3008,7 +3008,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
@@ -3039,7 +3039,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
@@ -3072,7 +3072,7 @@ 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,
+       .port_pause_limit = mv88e6097_port_pause_limit,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
        .stats_snapshot = mv88e6320_g1_stats_snapshot,
@@ -3106,7 +3106,7 @@ 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,
+       .port_pause_limit = mv88e6390_port_pause_limit,
        .port_set_cmode = mv88e6390x_port_set_cmode,
        .port_disable_learn_limit = mv88e6xxx_port_disable_learn_limit,
        .port_disable_pri_override = mv88e6xxx_port_disable_pri_override,
@@ -3142,7 +3142,7 @@ 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,
+       .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,
        .stats_snapshot = mv88e6390_g1_stats_snapshot,

diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h
index 07b35cccb0c48f382708ed5ae9d9613066fbdf49..d5f55c28f6137589119f8f396ec4aee7562d949e 100644 (file)
--- a/drivers/net/dsa/mv88e6xxx/chip.h
+++ b/drivers/net/dsa/mv88e6xxx/chip.h
@@ -425,7 +425,8 @@ 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);
+       int (*port_pause_limit)(struct mv88e6xxx_chip *chip, int port, u8 in,
+                               u8 out);
        int (*port_disable_learn_limit)(struct mv88e6xxx_chip *chip, int port);
        int (*port_disable_pri_override)(struct mv88e6xxx_chip *chip, int port);
 

diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
index 46e73ca0ac4d5426f92a606d644727ef7b176572..ee94d16789a23791005e86932ca78eb0eaeee566 100644 (file)
--- a/drivers/net/dsa/mv88e6xxx/port.c
+++ b/drivers/net/dsa/mv88e6xxx/port.c
@@ -376,22 +376,24 @@ int mv88e6xxx_port_get_cmode(struct mv88e6xxx_chip *chip, int port, u8 *cmode)
  * 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)
+int mv88e6097_port_pause_limit(struct mv88e6xxx_chip *chip, int port, u8 in,
+                              u8 out)
 {
-       return mv88e6xxx_port_write(chip, port, PORT_PAUSE_CTRL, 0x0000);
+       return mv88e6xxx_port_write(chip, port, PORT_PAUSE_CTRL, out << 8 | in);
 }
 
-int mv88e6390_port_pause_config(struct mv88e6xxx_chip *chip, int port)
+int mv88e6390_port_pause_limit(struct mv88e6xxx_chip *chip, int port, u8 in,
+                              u8 out)
 {
        int err;
 
        err = mv88e6xxx_port_write(chip, port, PORT_PAUSE_CTRL,
-                                  PORT_FLOW_CTRL_LIMIT_IN | 0);
+                                  PORT_FLOW_CTRL_LIMIT_IN | in);
        if (err)
                return err;
 
        return mv88e6xxx_port_write(chip, port, PORT_PAUSE_CTRL,
-                                   PORT_FLOW_CTRL_LIMIT_OUT | 0);
+                                   PORT_FLOW_CTRL_LIMIT_OUT | out);
 }
 
 /* Offset 0x04: Port Control Register */

diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h
index 1de200074e21c39a4ba49a1bc5880a93a01c9e40..7be66f5b4c313214db985e8b30ab930c55cc704c 100644 (file)
--- a/drivers/net/dsa/mv88e6xxx/port.h
+++ b/drivers/net/dsa/mv88e6xxx/port.h
@@ -228,8 +228,10 @@ int mv88e6xxx_port_set_message_port(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);
-int mv88e6390_port_pause_config(struct mv88e6xxx_chip *chip, int port);
+int mv88e6097_port_pause_limit(struct mv88e6xxx_chip *chip, int port, u8 in,
+                              u8 out);
+int mv88e6390_port_pause_limit(struct mv88e6xxx_chip *chip, int port, u8 in,
+                              u8 out);
 int mv88e6390x_port_set_cmode(struct mv88e6xxx_chip *chip, int port,
                              phy_interface_t mode);
 int mv88e6xxx_port_get_cmode(struct mv88e6xxx_chip *chip, int port, u8 *cmode);