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authorAndrew Lunn <andrew@lunn.ch>2015-04-02 04:06:40 +0200
committerDavid S. Miller <davem@davemloft.net>2015-04-01 22:55:41 -0400
commitf3a8b6b6a155210dac1f2a6ec4eb1b9ad04219df (patch)
treea93f339b515180b48c0be95ceeb09ad5c3b407f0 /drivers/net/dsa
parentcca8b1337541253f0414f744919c09f8b10bd962 (diff)
downloadlinux-next-f3a8b6b6a155210dac1f2a6ec4eb1b9ad04219df.tar.gz
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: Andrew Lunn <andrew@lunn.ch> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa')
-rw-r--r--drivers/net/dsa/mv88e6xxx.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index 488b6545dfb5..fc8d3b6ffe8e 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -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)
{
int ret;
@@ -452,6 +465,9 @@ static int mv88e6xxx_stats_snapshot(struct dsa_switch *ds, int port)
{
int ret;
+ if (mv88e6xxx_6352_family(ds))
+ port = (port + 1) << 5;
+
/* Snapshot the hardware statistics counters for this port. */
REG_WRITE(REG_GLOBAL, GLOBAL_STATS_OP,
GLOBAL_STATS_OP_CAPTURE_PORT |