diff options
| author | Yanir Lubetkin <yanirx.lubetkin@intel.com> | 2015-06-10 01:15:57 +0300 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-06-26 02:43:44 -0700 |
| commit | 69cfbc95bdbfa2bd9a82f27dc131b08c48542f19 (patch) | |
| tree | a9fdcea740fd104bb329495d1f3c0dacb2165717 /drivers/net/ethernet/intel/e1000e | |
| parent | 6607c99e7034e7565a1559a24dd35083d6719788 (diff) | |
| download | linux-69cfbc95bdbfa2bd9a82f27dc131b08c48542f19.tar.gz | |
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>
Diffstat (limited to 'drivers/net/ethernet/intel/e1000e')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000e/ich8lan.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c index c5bb1dd8a18e..983f5bf07bc4 100644 --- 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 */ |