[PATCH] skge: handle Tx/Rx arbiter timeout

Need to handle receive and transmit packet arbiter timeouts.
Transmit arbiter timeouts happens when Gigabit sends to 100Mbit port
on same switch and pause occurs.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>

2 files changed, 23 insertions, 2 deletions

diff --git a/drivers/net/skge.c b/drivers/net/skge.c
index 290d6aa92383..9f24714260be 100644
--- a/drivers/net/skge.c
+++ b/drivers/net/skge.c
@@ -2731,6 +2731,24 @@ static irqreturn_t skge_intr(int irq, void *dev_id, struct pt_regs *regs)
         if (status & IS_XA2_F)
                 skge_tx_intr(hw->dev[1]);
 
+        if (status & IS_PA_TO_RX1) {
+                struct skge_port *skge = netdev_priv(hw->dev[0]);
+                ++skge->net_stats.rx_over_errors;
+                skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX1);
+        }
+
+        if (status & IS_PA_TO_RX2) {
+                struct skge_port *skge = netdev_priv(hw->dev[1]);
+                ++skge->net_stats.rx_over_errors;
+                skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX2);
+        }
+
+        if (status & IS_PA_TO_TX1)
+                skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX1);
+
+        if (status & IS_PA_TO_TX2)
+                skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX2);
+
         if (status & IS_MAC1)
                 skge_mac_intr(hw, 0);
 
diff --git a/drivers/net/skge.h b/drivers/net/skge.h
index ba6dfd2f01d8..37323cd29e7e 100644
--- a/drivers/net/skge.h
+++ b/drivers/net/skge.h
@@ -203,8 +203,11 @@ enum {
         IS_XA2_F        = 1<<1,         /* Q_XA2 End of Frame */
         IS_XA2_C        = 1<<0,         /* Q_XA2 Encoding Error */
 
-        IS_PORT_1       = IS_XA1_F| IS_R1_F| IS_MAC1,
-        IS_PORT_2       = IS_XA2_F| IS_R2_F| IS_MAC2,
+        IS_TO_PORT1     = IS_PA_TO_RX1 | IS_PA_TO_TX1,
+        IS_TO_PORT2     = IS_PA_TO_RX2 | IS_PA_TO_TX2,
+
+        IS_PORT_1       = IS_XA1_F| IS_R1_F | IS_TO_PORT1 | IS_MAC1,
+        IS_PORT_2       = IS_XA2_F| IS_R2_F | IS_TO_PORT2 | IS_MAC2,
 };