ixgbe: add new function to check for management presence

This patch adds a support function that will indicate for the
existence of management FW.

Signed-off-by: Donald C Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
index 4c1c26732b67..3f56a8080118 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
@@ -3905,3 +3905,18 @@ void ixgbe_enable_rx_generic(struct ixgbe_hw *hw)
 		}
 	}
 }
+
+/** ixgbe_mng_present - returns true when management capability is present
+ * @hw: pointer to hardware structure
+ **/
+bool ixgbe_mng_present(struct ixgbe_hw *hw)
+{
+	u32 fwsm;
+
+	if (hw->mac.type < ixgbe_mac_82599EB)
+		return false;
+
+	fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
+	fwsm &= IXGBE_FWSM_MODE_MASK;
+	return fwsm == IXGBE_FWSM_FW_MODE_PT;
+}