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tg3: Add tg3_eee_pull_config() function

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Add tg3_eee_pull_config() to pull the settings from the hardware and
populate the eee structure.

If Link Flap Avoidance is enabled, we pull the eee settings from the hw
so as not to cause a phy reset on eee config mismatch later. This
requires moving down tg3_setup_eee() below the tg3_pull_config() to not
trample existing settings.

Reviewed-by: Ben Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nithin Sujir 2013-05-18 06:26:53 +00:00 committed by David S. Miller
parent 9e2ecbeb25
commit 400dfbaa8d
1 changed files with 47 additions and 9 deletions
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56
drivers/net/ethernet/broadcom/tg3.c
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@ -2320,6 +2320,46 @@ static void tg3_phy_apply_otp(struct tg3 *tp)
tg3_phy_toggle_auxctl_smdsp(tp, false);
}
static void tg3_eee_pull_config(struct tg3 *tp, struct ethtool_eee *eee)
{
u32 val;
struct ethtool_eee *dest = &tp->eee;
if (!(tp->phy_flags & TG3_PHYFLG_EEE_CAP))
return;
if (eee)
dest = eee;
if (tg3_phy_cl45_read(tp, MDIO_MMD_AN, TG3_CL45_D7_EEERES_STAT, &val))
return;
/* Pull eee_active */
if (val == TG3_CL45_D7_EEERES_STAT_LP_1000T ||
val == TG3_CL45_D7_EEERES_STAT_LP_100TX) {
dest->eee_active = 1;
} else
dest->eee_active = 0;
/* Pull lp advertised settings */
if (tg3_phy_cl45_read(tp, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE, &val))
return;
dest->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val);
/* Pull advertised and eee_enabled settings */
if (tg3_phy_cl45_read(tp, MDIO_MMD_AN, MDIO_AN_EEE_ADV, &val))
return;
dest->eee_enabled = !!val;
dest->advertised = mmd_eee_adv_to_ethtool_adv_t(val);
/* Pull tx_lpi_enabled */
val = tr32(TG3_CPMU_EEE_MODE);
dest->tx_lpi_enabled = !!(val & TG3_CPMU_EEEMD_LPI_IN_TX);
/* Pull lpi timer value */
dest->tx_lpi_timer = tr32(TG3_CPMU_EEE_DBTMR1) & 0xffff;
}
static void tg3_phy_eee_adjust(struct tg3 *tp, bool current_link_up)
{
u32 val;
@ -2343,11 +2383,8 @@ static void tg3_phy_eee_adjust(struct tg3 *tp, bool current_link_up)
tw32(TG3_CPMU_EEE_CTRL, eeectl);
tg3_phy_cl45_read(tp, MDIO_MMD_AN,
TG3_CL45_D7_EEERES_STAT, &val);
if (val == TG3_CL45_D7_EEERES_STAT_LP_1000T ||
val == TG3_CL45_D7_EEERES_STAT_LP_100TX)
tg3_eee_pull_config(tp, NULL);
if (tp->eee.eee_active)
tp->setlpicnt = 2;
}
@ -9493,16 +9530,17 @@ static int tg3_reset_hw(struct tg3 *tp, bool reset_phy)
if (tg3_flag(tp, INIT_COMPLETE))
tg3_abort_hw(tp, 1);
/* Enable MAC control of LPI */
if (tp->phy_flags & TG3_PHYFLG_EEE_CAP)
tg3_setup_eee(tp);
if ((tp->phy_flags & TG3_PHYFLG_KEEP_LINK_ON_PWRDN) &&
!(tp->phy_flags & TG3_PHYFLG_USER_CONFIGURED)) {
tg3_phy_pull_config(tp);
tg3_eee_pull_config(tp, NULL);
tp->phy_flags |= TG3_PHYFLG_USER_CONFIGURED;
}
/* Enable MAC control of LPI */
if (tp->phy_flags & TG3_PHYFLG_EEE_CAP)
tg3_setup_eee(tp);
if (reset_phy)
tg3_phy_reset(tp);