Subject: Re: [PATCH r8169] ethtool support and sane speed selection/detection

From: Jeff Garzik <[email-masked]>
Date: Wed, 28 Apr 2004 11:24:51 -0400

Felipe W Damasio wrote:
>     Hi Andy,
> 
> Andy Lutomirski wrote:
> 
>> +static void rtl8169_set_speed(struct net_device *dev,
>> +                  u8 autoneg, u16 speed, u8 duplex)
>> +{
>> +    struct rtl8169_private *tp = dev->priv;
>> +    void *ioaddr = tp->mmio_addr;
>> +    unsigned long flags;
>> +    u8 status;
>> +
>> +    int auto_nego, giga_ctrl;
>> +
>> +    spin_lock_irqsave(&tp->lock, flags);
>> +
>> +    status = RTL_R8(PHYstatus);
>> +    if ((status & TBI_Enable) && autoneg == AUTONEG_DISABLE) {
>> +        autoneg = AUTONEG_ENABLE;
>> +        printk(KERN_WARNING PFX
>> +               "%s: ignoring request to force speed in TBI mode\n",
>> +               dev->name);
>> +    }
>> +
>> +    auto_nego = mdio_read(ioaddr, PHY_AUTO_NEGO_REG);
>> +    auto_nego &= ~(PHY_Cap_10_Half | PHY_Cap_10_Full |
>> +               PHY_Cap_100_Half | PHY_Cap_100_Full);
>> +    giga_ctrl = mdio_read(ioaddr, PHY_1000_CTRL_REG);
>> +    giga_ctrl &= ~(PHY_Cap_1000_Full | PHY_Cap_Null);
>> +
>> +    if (autoneg == AUTONEG_ENABLE) {
>> +        auto_nego |= (PHY_Cap_10_Half | PHY_Cap_10_Full |
>> +                  PHY_Cap_100_Half | PHY_Cap_100_Full);
>> +        giga_ctrl |= PHY_Cap_1000_Full;
>> +    } else {
>> +        if (speed == SPEED_10)
>> +            auto_nego |= PHY_Cap_10_Half | PHY_Cap_10_Full;
>> +        else if (speed == SPEED_100)
>> +            auto_nego |= PHY_Cap_100_Half | PHY_Cap_100_Full;
>> +
>> +        if (speed == SPEED_1000)
>> +            giga_ctrl |= PHY_Cap_1000_Full;
>> +        else
>> +            giga_ctrl |= PHY_Cap_Null;
>> +
>> +        if (duplex == DUPLEX_HALF)
>> +            auto_nego &= ~(PHY_Cap_10_Full | PHY_Cap_100_Full);
>> +    }
>> +
>> +    tp->phy_auto_nego_reg = auto_nego;
>> +    tp->phy_1000_ctrl_reg = giga_ctrl;
>> +
>> +    if(!(status & TBI_Enable)) {
>> +        mdio_write(ioaddr, PHY_AUTO_NEGO_REG, auto_nego);
>> +        mdio_write(ioaddr, PHY_1000_CTRL_REG, giga_ctrl);
>> +    }
>> +
>> +    mdio_write(ioaddr, PHY_CTRL_REG,
>> +           PHY_Enable_Auto_Nego | PHY_Restart_Auto_Nego);
>> +
>> +    if (tp->if_up && (giga_ctrl & PHY_Cap_1000_Full))
>> +        mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
>> +
>> +    spin_unlock_irqrestore(&tp->lock, flags);
>> +}
>> +
> 
> 
>     I think you can use the mii's interface here..
> 
>     Please look 8139cp's way of doind this. Using that interface is much 
> cleaner and doesn't duplicate code.

Unfortunately mii_xxx doesn't do gigabit ethernet and GMII...

	Jeff