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r6040: consolidate MAC reset to its own function 

The reset of the MAC is currently done identically from two places
and one place is not waiting for the MAC_SM bit to be set after reset.
Everytime the MAC is software resetted a state machine is also needed
so consolidate the reset to its own function.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2012-04-11 07:18:36 +00:00 committed by David S. Miller
parent c1e6aaf0ab
commit 90f750a81a
1 changed files with 18 additions and 19 deletions
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37
drivers/net/ethernet/rdc/r6040.c
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@ -358,27 +358,35 @@ err_exit:
return rc;
}
static void r6040_init_mac_regs(struct net_device *dev)
static void r6040_reset_mac(struct r6040_private *lp)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
int limit = 2048;
u16 cmd;
/* Mask Off Interrupt */
iowrite16(MSK_INT, ioaddr + MIER);
/* Reset RDC MAC */
iowrite16(MAC_RST, ioaddr + MCR1);
while (limit--) {
cmd = ioread16(ioaddr + MCR1);
if (cmd & MAC_RST)
break;
}
/* Reset internal state machine */
iowrite16(MAC_SM_RST, ioaddr + MAC_SM);
iowrite16(0, ioaddr + MAC_SM);
mdelay(5);
}
static void r6040_init_mac_regs(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
/* Mask Off Interrupt */
iowrite16(MSK_INT, ioaddr + MIER);
/* Reset RDC MAC */
r6040_reset_mac(lp);
/* MAC Bus Control Register */
iowrite16(MBCR_DEFAULT, ioaddr + MBCR);
@ -445,18 +453,13 @@ static void r6040_down(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
int limit = 2048;
u16 *adrp;
u16 cmd;
/* Stop MAC */
iowrite16(MSK_INT, ioaddr + MIER); /* Mask Off Interrupt */
iowrite16(MAC_RST, ioaddr + MCR1); /* Reset RDC MAC */
while (limit--) {
cmd = ioread16(ioaddr + MCR1);
if (cmd & MAC_RST)
break;
}
/* Reset RDC MAC */
r6040_reset_mac(lp);
/* Restore MAC Address to MIDx */
adrp = (u16 *) dev->dev_addr;
@ -736,11 +739,7 @@ static void r6040_mac_address(struct net_device *dev)
u16 *adrp;
/* Reset MAC */
iowrite16(MAC_RST, ioaddr + MCR1);
/* Reset internal state machine */
iowrite16(MAC_SM_RST, ioaddr + MAC_SM);
iowrite16(0, ioaddr + MAC_SM);
mdelay(5);
r6040_reset_mac(lp);
/* Restore MAC Address */
adrp = (u16 *) dev->dev_addr;