diff mbox

[dpdk-dev,v2,09/30] net/ixgbe/base: enable LASI only for X552 devices

Message ID 1482313694-31602-10-git-send-email-wei.dai@intel.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel compilation success Compilation OK

Commit Message

Wei Dai Dec. 21, 2016, 9:47 a.m. UTC 
  Enable the Link Alarm Status Interrupt (LASI) only for X552 devices
to receive notifications of the link configurations of the external
PHY and correspondingly support the configuration of the internal
iXFI link, since iXFI does not support auto-negotiation.

This is not required for X553 devices having KR support, which
performs auto-negotiations and which is used as the internal
link to the external PHY.

Signed-off-by: Wei Dai <wei.dai@intel.com>
---
 drivers/net/ixgbe/base/ixgbe_x550.c | 31 ++++++++++++++++++++++---------
 1 file changed, 22 insertions(+), 9 deletions(-)
diff mbox

Patch

diff --git a/drivers/net/ixgbe/base/ixgbe_x550.c b/drivers/net/ixgbe/base/ixgbe_x550.c
index 28c7ce3..fecc8e6 100644
--- a/drivers/net/ixgbe/base/ixgbe_x550.c
+++ b/drivers/net/ixgbe/base/ixgbe_x550.c
@@ -2026,19 +2026,32 @@  STATIC s32 ixgbe_enable_lasi_ext_t_x550em(struct ixgbe_hw *hw)
 	status = ixgbe_get_lasi_ext_t_x550em(hw, &lsc);
 
 	/* Enable link status change alarm */
-	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_PMA_TX_VEN_LASI_INT_MASK,
-				      IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &reg);
 
-	if (status != IXGBE_SUCCESS)
-		return status;
+	/* Enable the LASI interrupts on X552 devices to receive notifications
+	 * of the link configurations of the external PHY and correspondingly
+	 * support the configuration of the internal iXFI link, since iXFI does
+	 * not support auto-negotiation. This is not required for X553 devices
+	 * having KR support, which performs auto-negotiations and which is used
+	 * as the internal link to the external PHY. Hence adding a check here
+	 * to avoid enabling LASI interrupts for X553 devices.
+	 */
+	if (hw->mac.type != ixgbe_mac_X550EM_a) {
+		status = hw->phy.ops.read_reg(hw,
+					IXGBE_MDIO_PMA_TX_VEN_LASI_INT_MASK,
+					IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &reg);
+
+		if (status != IXGBE_SUCCESS)
+			return status;
 
-	reg |= IXGBE_MDIO_PMA_TX_VEN_LASI_INT_EN;
+		reg |= IXGBE_MDIO_PMA_TX_VEN_LASI_INT_EN;
 
-	status = hw->phy.ops.write_reg(hw, IXGBE_MDIO_PMA_TX_VEN_LASI_INT_MASK,
-				       IXGBE_MDIO_AUTO_NEG_DEV_TYPE, reg);
+		status = hw->phy.ops.write_reg(hw,
+					IXGBE_MDIO_PMA_TX_VEN_LASI_INT_MASK,
+					IXGBE_MDIO_AUTO_NEG_DEV_TYPE, reg);
 
-	if (status != IXGBE_SUCCESS)
-		return status;
+		if (status != IXGBE_SUCCESS)
+			return status;
+	}
 
 	/* Enable high temperature failure and global fault alarms */
 	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_GLOBAL_INT_MASK,