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* [PATCH 2/2] r8169: allow true forced mode setting
@ 2009-05-14 21:46 Francois Romieu
  2009-05-16 12:50 ` Jean Delvare
  2009-05-19  2:25 ` David Miller
  0 siblings, 2 replies; 7+ messages in thread
From: Francois Romieu @ 2009-05-14 21:46 UTC (permalink / raw)
  To: David S. Miller
  Cc: Vincent Steenhoute, Jean Delvare, Martin Michlmayr,
	Xose Vazquez Perez, Ivan Vecera, Edward Hsu, Andrew Morton,
	netdev

Due to mostly historic reasons, including a lack of reliability
of the link handling (especially with the older 8169), the
current r8169 driver emulates forced mode setting by limiting
the advertised modes.

With this change the driver allows real 10/100 forced mode
settings on the 8169 and 8101/8102.

Original idea by Vincent Steenhoute. The RTL_GIGA_MAC_VER_03
tweak was extracted from Realtek's v6.009.00 driver.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Tested-by: Jean Delvare <jdelvare@suse.de>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>
---
 drivers/net/r8169.c |  111 ++++++++++++++++++++++++++------------------------
 1 files changed, 58 insertions(+), 53 deletions(-)

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index f86bf31..81ab2f0 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -843,75 +843,80 @@ static int rtl8169_set_speed_xmii(struct net_device *dev,
 {
 	struct rtl8169_private *tp = netdev_priv(dev);
 	void __iomem *ioaddr = tp->mmio_addr;
-	int auto_nego, giga_ctrl;
-
-	auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
-	auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
-		       ADVERTISE_100HALF | ADVERTISE_100FULL);
-	giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
-	giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
+	int giga_ctrl, bmcr;
 
 	if (autoneg == AUTONEG_ENABLE) {
+		int auto_nego;
+
+		auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
 		auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
 			      ADVERTISE_100HALF | ADVERTISE_100FULL);
-		giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
-	} else {
-		if (speed == SPEED_10)
-			auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
-		else if (speed == SPEED_100)
-			auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
-		else if (speed == SPEED_1000)
-			giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
-
-		if (duplex == DUPLEX_HALF)
-			auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
-
-		if (duplex == DUPLEX_FULL)
-			auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
+		auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
 
-		/* This tweak comes straight from Realtek's driver. */
-		if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
-		    ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
-		     (tp->mac_version == RTL_GIGA_MAC_VER_16))) {
-			auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
-		}
-	}
+		giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
+		giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 
-	/* The 8100e/8101e/8102e do Fast Ethernet only. */
-	if ((tp->mac_version == RTL_GIGA_MAC_VER_07) ||
-	    (tp->mac_version == RTL_GIGA_MAC_VER_08) ||
-	    (tp->mac_version == RTL_GIGA_MAC_VER_09) ||
-	    (tp->mac_version == RTL_GIGA_MAC_VER_10) ||
-	    (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
-	    (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
-	    (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
-	    (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
-		if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
-		    netif_msg_link(tp)) {
+		/* The 8100e/8101e/8102e do Fast Ethernet only. */
+		if ((tp->mac_version != RTL_GIGA_MAC_VER_07) &&
+		    (tp->mac_version != RTL_GIGA_MAC_VER_08) &&
+		    (tp->mac_version != RTL_GIGA_MAC_VER_09) &&
+		    (tp->mac_version != RTL_GIGA_MAC_VER_10) &&
+		    (tp->mac_version != RTL_GIGA_MAC_VER_13) &&
+		    (tp->mac_version != RTL_GIGA_MAC_VER_14) &&
+		    (tp->mac_version != RTL_GIGA_MAC_VER_15) &&
+		    (tp->mac_version != RTL_GIGA_MAC_VER_16)) {
+			giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
+		} else if (netif_msg_link(tp)) {
 			printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
 			       dev->name);
 		}
-		giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
-	}
 
-	auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
+		bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
+
+		if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
+		    (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
+		    (tp->mac_version >= RTL_GIGA_MAC_VER_17)) {
+			/*
+			 * Wake up the PHY.
+			 * Vendor specific (0x1f) and reserved (0x0e) MII
+			 * registers.
+			 */
+			mdio_write(ioaddr, 0x1f, 0x0000);
+			mdio_write(ioaddr, 0x0e, 0x0000);
+		}
+
+		mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
+		mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
+	} else {
+		giga_ctrl = 0;
+
+		if (speed == SPEED_10)
+			bmcr = 0;
+		else if (speed == SPEED_100)
+			bmcr = BMCR_SPEED100;
+		else
+			return -EINVAL;
+
+		if (duplex == DUPLEX_FULL)
+			bmcr |= BMCR_FULLDPLX;
 
-	if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
-	    (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
-	    (tp->mac_version >= RTL_GIGA_MAC_VER_17)) {
-		/*
-		 * Wake up the PHY.
-		 * Vendor specific (0x1f) and reserved (0x0e) MII registers.
-		 */
 		mdio_write(ioaddr, 0x1f, 0x0000);
-		mdio_write(ioaddr, 0x0e, 0x0000);
 	}
 
 	tp->phy_1000_ctrl_reg = giga_ctrl;
 
-	mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
-	mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
-	mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
+	mdio_write(ioaddr, MII_BMCR, bmcr);
+
+	if (tp->mac_version <= RTL_GIGA_MAC_VER_03) {
+		if ((speed == SPEED_100) && (autoneg != AUTONEG_ENABLE)) {
+			mdio_write(ioaddr, 0x17, 0x2138);
+			mdio_write(ioaddr, 0x0e, 0x0260);
+		} else {
+			mdio_write(ioaddr, 0x17, 0x2108);
+			mdio_write(ioaddr, 0x0e, 0x0000);
+		}
+	}
+
 	return 0;
 }
 
-- 
1.6.0.6


^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2009-05-19 21:33 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-05-14 21:46 [PATCH 2/2] r8169: allow true forced mode setting Francois Romieu
2009-05-16 12:50 ` Jean Delvare
2009-05-16 19:57   ` Xose Vazquez Perez
2009-05-17 10:34   ` Francois Romieu
2009-05-19  2:25 ` David Miller
2009-05-19 20:46   ` Francois Romieu
2009-05-19 21:32     ` David Miller

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