[PATCH 14/14] net/fec: enable flow control and length check on enet-mac
From: Uwe Kleine-König <hidden>
Date: 2011-02-11 10:32:55
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Also optimize not to reread the value written to FEC_R_CNTRL. Signed-off-by: Uwe Kleine-König <redacted> --- drivers/net/fec.c | 24 +++++++++++++----------- 1 files changed, 13 insertions(+), 11 deletions(-)
diff --git a/drivers/net/fec.c b/drivers/net/fec.c
index c322971..74798be 100644
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c@@ -339,7 +339,8 @@ fec_restart(struct net_device *ndev, int duplex) const struct platform_device_id *id_entry = platform_get_device_id(fep->pdev); int i; - u32 val, temp_mac[2]; + u32 temp_mac[2]; + u32 rcntl = OPT_FRAME_SIZE | 0x04; /* Whack a reset. We should wait for this. */ writel(1, fep->hwp + FEC_ECNTRL);
@@ -388,14 +389,14 @@ fec_restart(struct net_device *ndev, int duplex) /* Enable MII mode */ if (duplex) { - /* MII enable / FD enable */ - writel(OPT_FRAME_SIZE | 0x04, fep->hwp + FEC_R_CNTRL); + /* FD enable */ writel(0x04, fep->hwp + FEC_X_CNTRL); } else { - /* MII enable / No Rcv on Xmit */ - writel(OPT_FRAME_SIZE | 0x06, fep->hwp + FEC_R_CNTRL); + /* No Rcv on Xmit */ + rcntl |= 0x02; writel(0x0, fep->hwp + FEC_X_CNTRL); } + fep->full_duplex = duplex; /* Set MII speed */
@@ -406,21 +407,21 @@ fec_restart(struct net_device *ndev, int duplex) * differently on enet-mac. */ if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) { - val = readl(fep->hwp + FEC_R_CNTRL); + /* Enable flow control and length check */ + rcntl |= 0x40000000 | 0x00000020; /* MII or RMII */ if (fep->phy_interface == PHY_INTERFACE_MODE_RMII) - val |= (1 << 8); + rcntl |= (1 << 8); else - val &= ~(1 << 8); + rcntl &= ~(1 << 8); /* 10M or 100M */ if (fep->phy_dev && fep->phy_dev->speed == SPEED_100) - val &= ~(1 << 9); + rcntl &= ~(1 << 9); else - val |= (1 << 9); + rcntl |= (1 << 9); - writel(val, fep->hwp + FEC_R_CNTRL); } else { #ifdef FEC_MIIGSK_ENR if (fep->phy_interface == PHY_INTERFACE_MODE_RMII) {
@@ -440,6 +441,7 @@ fec_restart(struct net_device *ndev, int duplex) } #endif } + writel(rcntl, fep->hwp + FEC_R_CNTRL); /* And last, enable the transmit and receive processing */ writel(2, fep->hwp + FEC_ECNTRL);
--
1.7.2.3