[PATCH 5.4 58/62] net: mvpp2: disable force link UP during port init procedure
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-01-15 12:51:49
Also in:
lkml
From: Stefan Chulski <redacted>
commit 87508224485323ce2d4e7fb929ec80f51adcc238 upstream.
Force link UP can be enabled by bootloader during tftpboot
and breaks NFS support.
Force link UP disabled during port init procedure.
Fixes: f84bf386f395 ("net: mvpp2: initialize the GoP")
Signed-off-by: Stefan Chulski <redacted>
Acked-by: Marcin Wojtas <redacted>
Link: https://lore.kernel.org/r/1608216735-14501-1-git-send-email-stefanc@marvell.com (local)
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c@@ -4545,7 +4545,7 @@ static int mvpp2_port_init(struct mvpp2_ struct mvpp2 *priv = port->priv; struct mvpp2_txq_pcpu *txq_pcpu; unsigned int thread; - int queue, err; + int queue, err, val; /* Checks for hardware constraints */ if (port->first_rxq + port->nrxqs >
@@ -4559,6 +4559,18 @@ static int mvpp2_port_init(struct mvpp2_ mvpp2_egress_disable(port); mvpp2_port_disable(port); + if (mvpp2_is_xlg(port->phy_interface)) { + val = readl(port->base + MVPP22_XLG_CTRL0_REG); + val &= ~MVPP22_XLG_CTRL0_FORCE_LINK_PASS; + val |= MVPP22_XLG_CTRL0_FORCE_LINK_DOWN; + writel(val, port->base + MVPP22_XLG_CTRL0_REG); + } else { + val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG); + val &= ~MVPP2_GMAC_FORCE_LINK_PASS; + val |= MVPP2_GMAC_FORCE_LINK_DOWN; + writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG); + } + port->tx_time_coal = MVPP2_TXDONE_COAL_USEC; port->txqs = devm_kcalloc(dev, port->ntxqs, sizeof(*port->txqs),