diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/e1000e/lib.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/drivers/net/e1000e/lib.c b/drivers/net/e1000e/lib.c index 089578f6855a..37753d13cd22 100644 --- a/drivers/net/e1000e/lib.c +++ b/drivers/net/e1000e/lib.c @@ -575,20 +575,42 @@ s32 e1000e_check_for_serdes_link(struct e1000_hw *hw) */ /* SYNCH bit and IV bit are sticky. */ udelay(10); - if (E1000_RXCW_SYNCH & er32(RXCW)) { + rxcw = er32(RXCW); + if (rxcw & E1000_RXCW_SYNCH) { if (!(rxcw & E1000_RXCW_IV)) { - mac->serdes_has_link = 1; - hw_dbg(hw, "SERDES: Link is up.\n"); + mac->serdes_has_link = true; + hw_dbg(hw, "SERDES: Link up - forced.\n"); } } else { - mac->serdes_has_link = 0; - hw_dbg(hw, "SERDES: Link is down.\n"); + mac->serdes_has_link = false; + hw_dbg(hw, "SERDES: Link down - force failed.\n"); } } if (E1000_TXCW_ANE & er32(TXCW)) { status = er32(STATUS); - mac->serdes_has_link = (status & E1000_STATUS_LU); + if (status & E1000_STATUS_LU) { + /* SYNCH bit and IV bit are sticky, so reread rxcw. */ + udelay(10); + rxcw = er32(RXCW); + if (rxcw & E1000_RXCW_SYNCH) { + if (!(rxcw & E1000_RXCW_IV)) { + mac->serdes_has_link = true; + hw_dbg(hw, "SERDES: Link up - autoneg " + "completed sucessfully.\n"); + } else { + mac->serdes_has_link = false; + hw_dbg(hw, "SERDES: Link down - invalid" + "codewords detected in autoneg.\n"); + } + } else { + mac->serdes_has_link = false; + hw_dbg(hw, "SERDES: Link down - no sync.\n"); + } + } else { + mac->serdes_has_link = false; + hw_dbg(hw, "SERDES: Link down - autoneg failed\n"); + } } return 0; |
