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r8169: perform a PHY reset before any other operation at boot time 

Realtek's 8139/810x (0x8136) PCI-E comes with a touchy PHY.
A big heavy reset seems to calm it down.

Fix for http://bugzilla.kernel.org/show_bug.cgi?id=7378.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>
This commit is contained in:
Francois Romieu 2006-11-01 00:53:05 +01:00 committed by Jeff Garzik
parent de3edab427
commit bf793295e1
1 changed files with 20 additions and 2 deletions
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22
drivers/net/r8169.c
View File

@ -571,8 +571,8 @@ static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
{
unsigned int val;
val = (mdio_read(ioaddr, MII_BMCR) | BMCR_RESET) & 0xffff;
mdio_write(ioaddr, MII_BMCR, val);
mdio_write(ioaddr, MII_BMCR, BMCR_RESET);
val = mdio_read(ioaddr, MII_BMCR);
}
static void rtl8169_check_link_status(struct net_device *dev,
@ -1406,6 +1406,22 @@ static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
free_netdev(dev);
}
static void rtl8169_phy_reset(struct net_device *dev,
struct rtl8169_private *tp)
{
void __iomem *ioaddr = tp->mmio_addr;
int i;
tp->phy_reset_enable(ioaddr);
for (i = 0; i < 100; i++) {
if (!tp->phy_reset_pending(ioaddr))
return;
msleep(1);
}
if (netif_msg_link(tp))
printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
}
static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
{
void __iomem *ioaddr = tp->mmio_addr;
@ -1434,6 +1450,8 @@ static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
rtl8169_link_option(board_idx, &autoneg, &speed, &duplex);
rtl8169_phy_reset(dev, tp);
rtl8169_set_speed(dev, autoneg, speed, duplex);
if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))