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tg3: Track LP advertising 

This patch adds code to track the autonegotiation advertisements of the
link partner and report them through ethtool.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matt Carlson 2011-12-08 14:40:16 +00:00 committed by David S. Miller
parent e2bf73e75a
commit 859edb2631
2 changed files with 38 additions and 3 deletions
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40
drivers/net/ethernet/broadcom/tg3.c
View File

@ -3803,6 +3803,28 @@ static bool tg3_phy_copper_an_config_ok(struct tg3 *tp, u32 *lcladv)
return true;
}
static bool tg3_phy_copper_fetch_rmtadv(struct tg3 *tp, u32 *rmtadv)
{
u32 lpeth = 0;
if (!(tp->phy_flags & TG3_PHYFLG_10_100_ONLY)) {
u32 val;
if (tg3_readphy(tp, MII_STAT1000, &val))
return false;
lpeth = mii_stat1000_to_ethtool_lpa_t(val);
}
if (tg3_readphy(tp, MII_LPA, rmtadv))
return false;
lpeth |= mii_lpa_to_ethtool_lpa_t(*rmtadv);
tp->link_config.rmt_adv = lpeth;
return true;
}
static int tg3_setup_copper_phy(struct tg3 *tp, int force_reset)
{
int current_link_up;
@ -3907,6 +3929,7 @@ static int tg3_setup_copper_phy(struct tg3 *tp, int force_reset)
current_speed = SPEED_INVALID;
current_duplex = DUPLEX_INVALID;
tp->phy_flags &= ~TG3_PHYFLG_MDIX_STATE;
tp->link_config.rmt_adv = 0;
if (tp->phy_flags & TG3_PHYFLG_CAPACITIVE_COUPLING) {
err = tg3_phy_auxctl_read(tp,
@ -3963,8 +3986,7 @@ static int tg3_setup_copper_phy(struct tg3 *tp, int force_reset)
if (tp->link_config.autoneg == AUTONEG_ENABLE) {
if ((bmcr & BMCR_ANENABLE) &&
tg3_phy_copper_an_config_ok(tp, &lcl_adv) &&
(tg3_flag(tp, PAUSE_AUTONEG) &&
!tg3_readphy(tp, MII_LPA, &rmt_adv)))
tg3_phy_copper_fetch_rmtadv(tp, &rmt_adv))
current_link_up = 1;
} else {
if (!(bmcr & BMCR_ANENABLE) &&
@ -4601,6 +4623,9 @@ restart_autoneg:
if (sg_dig_status & SG_DIG_PARTNER_ASYM_PAUSE)
remote_adv |= LPA_1000XPAUSE_ASYM;
tp->link_config.rmt_adv =
mii_adv_to_ethtool_adv_x(remote_adv);
tg3_setup_flow_control(tp, local_adv, remote_adv);
current_link_up = 1;
tp->serdes_counter = 0;
@ -4672,6 +4697,9 @@ static int tg3_setup_fiber_by_hand(struct tg3 *tp, u32 mac_status)
if (rxflags & MR_LP_ADV_ASYM_PAUSE)
remote_adv |= LPA_1000XPAUSE_ASYM;
tp->link_config.rmt_adv =
mii_adv_to_ethtool_adv_x(remote_adv);
tg3_setup_flow_control(tp, local_adv, remote_adv);
current_link_up = 1;
@ -4754,6 +4782,7 @@ static int tg3_setup_fiber_phy(struct tg3 *tp, int force_reset)
udelay(40);
current_link_up = 0;
tp->link_config.rmt_adv = 0;
mac_status = tr32(MAC_STATUS);
if (tg3_flag(tp, HW_AUTONEG))
@ -4845,6 +4874,7 @@ static int tg3_setup_fiber_mii_phy(struct tg3 *tp, int force_reset)
current_link_up = 0;
current_speed = SPEED_INVALID;
current_duplex = DUPLEX_INVALID;
tp->link_config.rmt_adv = 0;
err |= tg3_readphy(tp, MII_BMSR, &bmsr);
err |= tg3_readphy(tp, MII_BMSR, &bmsr);
@ -4951,6 +4981,9 @@ static int tg3_setup_fiber_mii_phy(struct tg3 *tp, int force_reset)
current_duplex = DUPLEX_FULL;
else
current_duplex = DUPLEX_HALF;
tp->link_config.rmt_adv =
mii_adv_to_ethtool_adv_x(remote_adv);
} else if (!tg3_flag(tp, 5780_CLASS)) {
/* Link is up via parallel detect */
} else {
@ -10283,9 +10316,10 @@ static int tg3_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
cmd->advertising |= ADVERTISED_Asym_Pause;
}
}
if (netif_running(dev)) {
if (netif_running(dev) && netif_carrier_ok(dev)) {
ethtool_cmd_speed_set(cmd, tp->link_config.active_speed);
cmd->duplex = tp->link_config.active_duplex;
cmd->lp_advertising = tp->link_config.rmt_adv;
if (!(tp->phy_flags & TG3_PHYFLG_ANY_SERDES)) {
if (tp->phy_flags & TG3_PHYFLG_MDIX_STATE)
cmd->eth_tp_mdix = ETH_TP_MDI_X;

1
drivers/net/ethernet/broadcom/tg3.h
View File

@ -2698,6 +2698,7 @@ struct tg3_link_config {
#define DUPLEX_INVALID 0xff
#define AUTONEG_INVALID 0xff
u16 active_speed;
u32 rmt_adv;
/* When we go in and out of low power mode we need
* to swap with this state.