Commit f3a8b6b6 authored by Andrew Lunn's avatar Andrew Lunn Committed by David S. Miller

net: dsa: mv88e6xxx: Fix stats counters for 6352 family

The statistic counters for the mv88e6172 never worked. This device is
a member of the 6352 family of chips, which has a slightly different
layout of the register used for capturing statistics. Add support for
detecting this family and poking the port in the right place in the
register.
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Tested-by: default avatarGuenter Roeck <linux@roeck-us.net>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cca8b133
...@@ -434,6 +434,19 @@ void mv88e6xxx_poll_link(struct dsa_switch *ds) ...@@ -434,6 +434,19 @@ void mv88e6xxx_poll_link(struct dsa_switch *ds)
} }
} }
static bool mv88e6xxx_6352_family(struct dsa_switch *ds)
{
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
switch (ps->id) {
case PORT_SWITCH_ID_6352:
case PORT_SWITCH_ID_6172:
case PORT_SWITCH_ID_6176:
return true;
}
return false;
}
static int mv88e6xxx_stats_wait(struct dsa_switch *ds) static int mv88e6xxx_stats_wait(struct dsa_switch *ds)
{ {
int ret; int ret;
...@@ -452,6 +465,9 @@ static int mv88e6xxx_stats_snapshot(struct dsa_switch *ds, int port) ...@@ -452,6 +465,9 @@ static int mv88e6xxx_stats_snapshot(struct dsa_switch *ds, int port)
{ {
int ret; int ret;
if (mv88e6xxx_6352_family(ds))
port = (port + 1) << 5;
/* Snapshot the hardware statistics counters for this port. */ /* Snapshot the hardware statistics counters for this port. */
REG_WRITE(REG_GLOBAL, GLOBAL_STATS_OP, REG_WRITE(REG_GLOBAL, GLOBAL_STATS_OP,
GLOBAL_STATS_OP_CAPTURE_PORT | GLOBAL_STATS_OP_CAPTURE_PORT |
......
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