evie/android_kernel_oneplus_msm8998
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tg3: Disable EEE during loopback tests

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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>
This commit is contained in:
Matt Carlson 2011-01-25 15:58:54 +00:00 • committed by David S. Miller
parent aba49f2421
commit ab78904608
1 changed files with 15 additions and 5 deletions
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20
drivers/net/tg3.c
View file

@ -11013,14 +11013,19 @@ out:
static int tg3_test_loopback(struct tg3 *tp) static int tg3_test_loopback(struct tg3 *tp)
{ {
int err = 0; int err = 0;
u32 cpmuctrl = 0; u32 eee_cap, cpmuctrl = 0;
if (!netif_running(tp->dev)) if (!netif_running(tp->dev))
return TG3_LOOPBACK_FAILED; return TG3_LOOPBACK_FAILED;
eee_cap = tp->phy_flags & TG3_PHYFLG_EEE_CAP;
tp->phy_flags &= ~TG3_PHYFLG_EEE_CAP;
err = tg3_reset_hw(tp, 1); err = tg3_reset_hw(tp, 1);
if (err) if (err) {
return TG3_LOOPBACK_FAILED; err = TG3_LOOPBACK_FAILED;
goto done;
}
/* Turn off gphy autopowerdown. */ /* Turn off gphy autopowerdown. */
if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD) if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD)
@ -11040,8 +11045,10 @@ static int tg3_test_loopback(struct tg3 *tp)
udelay(10); udelay(10);
} }
if (status != CPMU_MUTEX_GNT_DRIVER) if (status != CPMU_MUTEX_GNT_DRIVER) {
return TG3_LOOPBACK_FAILED; err = TG3_LOOPBACK_FAILED;
goto done;
}
/* Turn off link-based power management. */ /* Turn off link-based power management. */
cpmuctrl = tr32(TG3_CPMU_CTRL); cpmuctrl = tr32(TG3_CPMU_CTRL);
@ -11070,6 +11077,9 @@ static int tg3_test_loopback(struct tg3 *tp)
if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD) if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD)
tg3_phy_toggle_apd(tp, true); tg3_phy_toggle_apd(tp, true);
done:
tp->phy_flags |= eee_cap;
return err; return err;
} }