tg3: Disable EEE during loopback tests
EEE interferes with the hardware's ability to loop a packet back to the host. This patch disables the feature for the duration of the test. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -11013,14 +11013,19 @@ out:
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static int tg3_test_loopback(struct tg3 *tp)
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{
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int err = 0;
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u32 cpmuctrl = 0;
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u32 eee_cap, cpmuctrl = 0;
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if (!netif_running(tp->dev))
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return TG3_LOOPBACK_FAILED;
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eee_cap = tp->phy_flags & TG3_PHYFLG_EEE_CAP;
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tp->phy_flags &= ~TG3_PHYFLG_EEE_CAP;
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err = tg3_reset_hw(tp, 1);
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if (err)
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return TG3_LOOPBACK_FAILED;
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if (err) {
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err = TG3_LOOPBACK_FAILED;
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goto done;
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}
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/* Turn off gphy autopowerdown. */
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if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD)
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@ -11040,8 +11045,10 @@ static int tg3_test_loopback(struct tg3 *tp)
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udelay(10);
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}
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if (status != CPMU_MUTEX_GNT_DRIVER)
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return TG3_LOOPBACK_FAILED;
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if (status != CPMU_MUTEX_GNT_DRIVER) {
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err = TG3_LOOPBACK_FAILED;
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goto done;
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}
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/* Turn off link-based power management. */
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cpmuctrl = tr32(TG3_CPMU_CTRL);
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@ -11070,6 +11077,9 @@ static int tg3_test_loopback(struct tg3 *tp)
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if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD)
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tg3_phy_toggle_apd(tp, true);
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done:
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tp->phy_flags |= eee_cap;
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return err;
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}
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