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From 09313f26999e2685e0b9434374e7308e1f447e55 Mon Sep 17 00:00:00 2001
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From: John Crispin <john@phrozen.org>
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Date: Fri, 22 Apr 2016 11:05:23 +0200
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Subject: [PATCH 078/102] net-next: mediatek: fix gigabit and flow control
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advertisement
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The current code will not setup the PHYs advertisement features correctly.
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Fix this and properly advertise Gigabit features and properly handle
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asymmetric pause frames.
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Signed-off-by: Sean Wang <keyhaede@gmail.com>
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Signed-off-by: John Crispin <john@phrozen.org>
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---
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drivers/net/ethernet/mediatek/mtk_eth_soc.c | 30 +++++++++++++++++++++++----
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1 file changed, 26 insertions(+), 4 deletions(-)
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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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@@ -133,6 +133,8 @@ static int mtk_mdio_read(struct mii_bus
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static void mtk_phy_link_adjust(struct net_device *dev)
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{
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struct mtk_mac *mac = netdev_priv(dev);
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+ u16 lcl_adv = 0, rmt_adv = 0;
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+ u8 flowctrl;
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u32 mcr = MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG |
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MAC_MCR_FORCE_MODE | MAC_MCR_TX_EN |
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MAC_MCR_RX_EN | MAC_MCR_BACKOFF_EN |
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@@ -150,11 +152,30 @@ static void mtk_phy_link_adjust(struct n
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if (mac->phy_dev->link)
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mcr |= MAC_MCR_FORCE_LINK;
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- if (mac->phy_dev->duplex)
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+ if (mac->phy_dev->duplex) {
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mcr |= MAC_MCR_FORCE_DPX;
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- if (mac->phy_dev->pause)
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- mcr |= MAC_MCR_FORCE_RX_FC | MAC_MCR_FORCE_TX_FC;
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+ if (mac->phy_dev->pause)
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+ rmt_adv = LPA_PAUSE_CAP;
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+ if (mac->phy_dev->asym_pause)
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+ rmt_adv |= LPA_PAUSE_ASYM;
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+
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+ if (mac->phy_dev->advertising & ADVERTISED_Pause)
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+ lcl_adv |= ADVERTISE_PAUSE_CAP;
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+ if (mac->phy_dev->advertising & ADVERTISED_Asym_Pause)
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+ lcl_adv |= ADVERTISE_PAUSE_ASYM;
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+
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+ flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv);
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+
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+ if (flowctrl & FLOW_CTRL_TX)
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+ mcr |= MAC_MCR_FORCE_TX_FC;
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+ if (flowctrl & FLOW_CTRL_RX)
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+ mcr |= MAC_MCR_FORCE_RX_FC;
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+
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+ netif_dbg(mac->hw, link, dev, "rx pause %s, tx pause %s\n",
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+ flowctrl & FLOW_CTRL_RX ? "enabled" : "disabled",
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+ flowctrl & FLOW_CTRL_TX ? "enabled" : "disabled");
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+ }
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mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id));
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@@ -236,7 +257,8 @@ static int mtk_phy_connect(struct mtk_ma
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mac->phy_dev->autoneg = AUTONEG_ENABLE;
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mac->phy_dev->speed = 0;
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mac->phy_dev->duplex = 0;
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- mac->phy_dev->supported &= PHY_BASIC_FEATURES;
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+ mac->phy_dev->supported &= PHY_GBIT_FEATURES | SUPPORTED_Pause |
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+ SUPPORTED_Asym_Pause;
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mac->phy_dev->advertising = mac->phy_dev->supported |
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ADVERTISED_Autoneg;
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phy_start_aneg(mac->phy_dev);
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