[PATCH 03/10] net/ixgbe/base: disable 2.5/5G speeds from auto-negotiation for E610

[Yuan Wang <yuanx.wang@intel.com>]

From: Piotr Kwapulinski <piotr.kwapulinski@intel.com>

2.5 and 5 Gbps link speeds must be excluded from the auto-negotiation set
used during driver initialization due to compatibility issues with
certain switches. Those issues do not exist in case of E610 2.5G SKU
device (0x57b1).

Fixes: c6cb313da739 (net/ixgbe/base: add link management for E610)
Cc: stable@dpdk.org

Signed-off-by: Piotr Kwapulinski <piotr.kwapulinski@intel.com>
Signed-off-by: Yuan Wang <yuanx.wang@intel.com>
---
 drivers/net/ixgbe/base/ixgbe_e610.c | 35 +++++++++++++++++++----------
 1 file changed, 23 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ixgbe/base/ixgbe_e610.c b/drivers/net/ixgbe/base/ixgbe_e610.c
index ee8614d3db..a7d642887f 100644
--- a/drivers/net/ixgbe/base/ixgbe_e610.c
+++ b/drivers/net/ixgbe/base/ixgbe_e610.c
@@ -4256,16 +4256,6 @@ s32 ixgbe_identify_phy_E610(struct ixgbe_hw *hw)
 	    pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_1G_SGMII    ||
 	    pcaps.phy_type_high & IXGBE_PHY_TYPE_HIGH_1G_USXGMII)
 		hw->phy.speeds_supported |= IXGBE_LINK_SPEED_1GB_FULL;
-	if (pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_2500BASE_T   ||
-	    pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_2500BASE_X   ||
-	    pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_2500BASE_KX  ||
-	    pcaps.phy_type_high & IXGBE_PHY_TYPE_HIGH_2500M_SGMII ||
-	    pcaps.phy_type_high & IXGBE_PHY_TYPE_HIGH_2500M_USXGMII)
-		hw->phy.speeds_supported |= IXGBE_LINK_SPEED_2_5GB_FULL;
-	if (pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_5GBASE_T  ||
-	    pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_5GBASE_KR ||
-	    pcaps.phy_type_high & IXGBE_PHY_TYPE_HIGH_5G_USXGMII)
-		hw->phy.speeds_supported |= IXGBE_LINK_SPEED_5GB_FULL;
 	if (pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_10GBASE_T       ||
 	    pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_10G_SFI_DA      ||
 	    pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_10GBASE_SR      ||
@@ -4276,10 +4266,31 @@ s32 ixgbe_identify_phy_E610(struct ixgbe_hw *hw)
 	    pcaps.phy_type_high & IXGBE_PHY_TYPE_HIGH_10G_USXGMII)
 		hw->phy.speeds_supported |= IXGBE_LINK_SPEED_10GB_FULL;
 
-	/* Initialize autoneg speeds */
-	if (!hw->phy.autoneg_advertised)
+	/* 2.5 and 5 Gbps link speeds must be excluded from the
+	 * auto-negotiation set used during driver initialization due to
+	 * compatibility issues with certain switches. Those issues do not
+	 * exist in case of E610 2.5G SKU device (0x57b1).
+	 */
+	if (!hw->phy.autoneg_advertised &&
+	    hw->device_id != IXGBE_DEV_ID_E610_2_5G_T)
 		hw->phy.autoneg_advertised = hw->phy.speeds_supported;
 
+	if (pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_2500BASE_T   ||
+	    pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_2500BASE_X   ||
+	    pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_2500BASE_KX  ||
+	    pcaps.phy_type_high & IXGBE_PHY_TYPE_HIGH_2500M_SGMII ||
+	    pcaps.phy_type_high & IXGBE_PHY_TYPE_HIGH_2500M_USXGMII)
+		hw->phy.speeds_supported |= IXGBE_LINK_SPEED_2_5GB_FULL;
+
+	if (!hw->phy.autoneg_advertised &&
+	    hw->device_id == IXGBE_DEV_ID_E610_2_5G_T)
+		hw->phy.autoneg_advertised = hw->phy.speeds_supported;
+
+	if (pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_5GBASE_T  ||
+	    pcaps.phy_type_low  & IXGBE_PHY_TYPE_LOW_5GBASE_KR ||
+	    pcaps.phy_type_high & IXGBE_PHY_TYPE_HIGH_5G_USXGMII)
+		hw->phy.speeds_supported |= IXGBE_LINK_SPEED_5GB_FULL;
+
 	/* Set PHY ID */
 	memcpy(&hw->phy.id, pcaps.phy_id_oui, sizeof(u32));
 
-- 
2.43.5