e1000e: i219 - increase IPG for speed 10/100 full duplex

In SPT/i219, there were CRC errors in speed 10/100 full duplex.
The solution given by the HW team is to increase the IPG from 8 to 0xC

Signed-off-by: Yanir Lubetkin <yanirx.lubetkin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
index c5bb1dd8a18e796c9eb4c97e4890fa7a26b00b6d..983f5bf07bc44f8336b73a2727c21569941a931d 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -1400,16 +1400,20 @@ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
        if (((hw->mac.type == e1000_pch2lan) ||
             (hw->mac.type == e1000_pch_lpt) ||
             (hw->mac.type == e1000_pch_spt)) && link) {
-               u32 reg;
+               u16 speed, duplex;
 
-               reg = er32(STATUS);
+               e1000e_get_speed_and_duplex_copper(hw, &speed, &duplex);
                tipg_reg = er32(TIPG);
                tipg_reg &= ~E1000_TIPG_IPGT_MASK;
 
-               if (!(reg & (E1000_STATUS_FD | E1000_STATUS_SPEED_MASK))) {
+               if (duplex == HALF_DUPLEX && speed == SPEED_10) {
                        tipg_reg |= 0xFF;
                        /* Reduce Rx latency in analog PHY */
                        emi_val = 0;
+               } else if (hw->mac.type == e1000_pch_spt &&
+                          duplex == FULL_DUPLEX && speed != SPEED_1000) {
+                       tipg_reg |= 0xC;
+                       emi_val = 1;
                } else {
 
                        /* Roll back the default values */