diff options
| author | Matt Carlson <mcarlson@broadcom.com> | 2011-07-20 10:20:52 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-07-21 12:36:15 -0700 |
| commit | b715ce947f51c6637e78b262501f0c4ff9d848cc (patch) | |
| tree | c3cb340a096d646cf2d1440309d87f4fd2b767a8 /drivers | |
| parent | be671947b5b3efc6863ff429c1f265aa38e291db (diff) | |
tg3: Fix link down notify failure when EEE disabled
Occasionally, when the network cable is removed after a successful
autonegotiation, the device will not send a link down interrupt to the
driver. This happens because of a bad interaction of an EEE
workaround. The fix is to adjust the code so that the root cause
condition does not happen.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/tg3.c | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 2a9ab99baafd..e0413bcce0f5 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -1858,6 +1858,12 @@ static void tg3_phy_eee_adjust(struct tg3 *tp, u32 current_link_up) } if (!tp->setlpicnt) { + if (current_link_up == 1 && + !TG3_PHY_AUXCTL_SMDSP_ENABLE(tp)) { + tg3_phydsp_write(tp, MII_TG3_DSP_TAP26, 0x0000); + TG3_PHY_AUXCTL_SMDSP_DISABLE(tp); + } + val = tr32(TG3_CPMU_EEE_MODE); tw32(TG3_CPMU_EEE_MODE, val & ~TG3_CPMU_EEEMD_LPI_ENABLE); } @@ -1872,7 +1878,9 @@ static void tg3_phy_eee_enable(struct tg3 *tp) GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 || GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765) && !TG3_PHY_AUXCTL_SMDSP_ENABLE(tp)) { - tg3_phydsp_write(tp, MII_TG3_DSP_TAP26, 0x0003); + val = MII_TG3_DSP_TAP26_ALNOKO | + MII_TG3_DSP_TAP26_RMRXSTO; + tg3_phydsp_write(tp, MII_TG3_DSP_TAP26, val); TG3_PHY_AUXCTL_SMDSP_DISABLE(tp); } @@ -3128,13 +3136,26 @@ static int tg3_phy_autoneg_cfg(struct tg3 *tp, u32 advertise, u32 flowctrl) if (!err) { u32 err2; + val = 0; + /* Advertise 100-BaseTX EEE ability */ + if (advertise & ADVERTISED_100baseT_Full) + val |= MDIO_AN_EEE_ADV_100TX; + /* Advertise 1000-BaseT EEE ability */ + if (advertise & ADVERTISED_1000baseT_Full) + val |= MDIO_AN_EEE_ADV_1000T; + err = tg3_phy_cl45_write(tp, MDIO_MMD_AN, MDIO_AN_EEE_ADV, val); + if (err) + val = 0; + switch (GET_ASIC_REV(tp->pci_chip_rev_id)) { case ASIC_REV_5717: case ASIC_REV_57765: case ASIC_REV_5719: - val = MII_TG3_DSP_TAP26_ALNOKO | - MII_TG3_DSP_TAP26_RMRXSTO | - MII_TG3_DSP_TAP26_OPCSINPT; + /* If we advertised any eee advertisements above... */ + if (val) + val = MII_TG3_DSP_TAP26_ALNOKO | + MII_TG3_DSP_TAP26_RMRXSTO | + MII_TG3_DSP_TAP26_OPCSINPT; tg3_phydsp_write(tp, MII_TG3_DSP_TAP26, val); /* Fall through */ case ASIC_REV_5720: @@ -3143,15 +3164,6 @@ static int tg3_phy_autoneg_cfg(struct tg3 *tp, u32 advertise, u32 flowctrl) MII_TG3_DSP_CH34TP2_HIBW01); } - val = 0; - /* Advertise 100-BaseTX EEE ability */ - if (advertise & ADVERTISED_100baseT_Full) - val |= MDIO_AN_EEE_ADV_100TX; - /* Advertise 1000-BaseT EEE ability */ - if (advertise & ADVERTISED_1000baseT_Full) - val |= MDIO_AN_EEE_ADV_1000T; - err = tg3_phy_cl45_write(tp, MDIO_MMD_AN, MDIO_AN_EEE_ADV, val); - err2 = TG3_PHY_AUXCTL_SMDSP_DISABLE(tp); if (!err) err = err2; |