diff options
Diffstat (limited to 'drivers/net/ethernet/intel/e1000e/82571.c')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000e/82571.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c index 36db4df09aed..080c89093feb 100644 --- a/drivers/net/ethernet/intel/e1000e/82571.c +++ b/drivers/net/ethernet/intel/e1000e/82571.c @@ -999,7 +999,7 @@ static s32 e1000_set_d0_lplu_state_82571(struct e1000_hw *hw, bool active) **/ static s32 e1000_reset_hw_82571(struct e1000_hw *hw) { - u32 ctrl, ctrl_ext, eecd; + u32 ctrl, ctrl_ext, eecd, tctl; s32 ret_val; /* @@ -1014,7 +1014,9 @@ static s32 e1000_reset_hw_82571(struct e1000_hw *hw) ew32(IMC, 0xffffffff); ew32(RCTL, 0); - ew32(TCTL, E1000_TCTL_PSP); + tctl = er32(TCTL); + tctl &= ~E1000_TCTL_EN; + ew32(TCTL, tctl); e1e_flush(); usleep_range(10000, 20000); @@ -1572,6 +1574,9 @@ static s32 e1000_check_for_serdes_link_82571(struct e1000_hw *hw) ctrl = er32(CTRL); status = er32(STATUS); rxcw = er32(RXCW); + /* SYNCH bit and IV bit are sticky */ + udelay(10); + rxcw = er32(RXCW); if ((rxcw & E1000_RXCW_SYNCH) && !(rxcw & E1000_RXCW_IV)) { @@ -1598,10 +1603,8 @@ static s32 e1000_check_for_serdes_link_82571(struct e1000_hw *hw) * auto-negotiation in the TXCW register and disable * forced link in the Device Control register in an * attempt to auto-negotiate with our link partner. - * If the partner code word is null, stop forcing - * and restart auto negotiation. */ - if ((rxcw & E1000_RXCW_C) || !(rxcw & E1000_RXCW_CW)) { + if (rxcw & E1000_RXCW_C) { /* Enable autoneg, and unforce link up */ ew32(TXCW, mac->txcw); ew32(CTRL, (ctrl & ~E1000_CTRL_SLU)); @@ -1677,16 +1680,18 @@ static s32 e1000_check_for_serdes_link_82571(struct e1000_hw *hw) e_dbg("ANYSTATE -> DOWN\n"); } else { /* - * Check several times, if Sync and Config - * both are consistently 1 then simply ignore - * the Invalid bit and restart Autoneg + * Check several times, if SYNCH bit and CONFIG + * bit both are consistently 1 then simply ignore + * the IV bit and restart Autoneg */ for (i = 0; i < AN_RETRY_COUNT; i++) { udelay(10); rxcw = er32(RXCW); - if ((rxcw & E1000_RXCW_IV) && - !((rxcw & E1000_RXCW_SYNCH) && - (rxcw & E1000_RXCW_C))) { + if ((rxcw & E1000_RXCW_SYNCH) && + (rxcw & E1000_RXCW_C)) + continue; + + if (rxcw & E1000_RXCW_IV) { mac->serdes_has_link = false; mac->serdes_link_state = e1000_serdes_link_down; |