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| author | Florian Fainelli <florian@openwrt.org> | 2012-04-11 07:18:36 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-04-12 16:06:23 -0400 |
| commit | 90f750a81a29587846e907d2c8ed60a0586ce632 (patch) | |
| tree | a029d7e97a5c67c1ece4b7fc40ed402604ce9b12 /drivers/net/ethernet/rdc/r6040.c | |
| parent | c1e6aaf0ab0150d625dc266721c033db8b43e49d (diff) | |
| download | kernel_goldelico_gta04-90f750a81a29587846e907d2c8ed60a0586ce632.zip kernel_goldelico_gta04-90f750a81a29587846e907d2c8ed60a0586ce632.tar.gz kernel_goldelico_gta04-90f750a81a29587846e907d2c8ed60a0586ce632.tar.bz2 | |
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>
Diffstat (limited to 'drivers/net/ethernet/rdc/r6040.c')
| -rw-r--r-- | drivers/net/ethernet/rdc/r6040.c | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/drivers/net/ethernet/rdc/r6040.c b/drivers/net/ethernet/rdc/r6040.c index a26307f..c10b0b8 100644 --- a/drivers/net/ethernet/rdc/r6040.c +++ b/drivers/net/ethernet/rdc/r6040.c @@ -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; |