From 50ac58ba1d707df33f0c398ae700214e49bf918f Mon Sep 17 00:00:00 2001 From: Peter P Waskiewicz Jr Date: Thu, 4 Jun 2009 11:10:53 +0000 Subject: ixgbe: Harden the 82599 multispeed fiber autotry mechanism 82599 supports multispeed fiber optical modules (10Gbps/1Gbps). Some scenarios can cause the autotry mechanism to not negotiate link properly. What needs to happen is the driver must flap the Tx laser to induce an Rx Loss of Signal on the link partner. This will restart the autotry mechanism to get link into a known state. The software definable pin (SDP) 3 on the 0x10fb NIC is wired to cause a Tx LOS event, which triggers the Rx LOS we require. Signed-off-by: Peter P Waskiewicz Jr Acked-by: Mallikarjuna R Chilakala Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ixgbe/ixgbe_common.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/ixgbe/ixgbe_common.c') diff --git a/drivers/net/ixgbe/ixgbe_common.c b/drivers/net/ixgbe/ixgbe_common.c index 6f79409270a7..4d36cd32cd30 100644 --- a/drivers/net/ixgbe/ixgbe_common.c +++ b/drivers/net/ixgbe/ixgbe_common.c @@ -2068,6 +2068,7 @@ s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index) hw->mac.ops.check_link(hw, &speed, &link_up, false); if (!link_up) { + autoc_reg |= IXGBE_AUTOC_AN_RESTART; autoc_reg |= IXGBE_AUTOC_FLU; IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg); msleep(10); -- cgit v1.2.3