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[PATCH] sundance: correct initial and close hardware step.

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Correct initial and close hardware step.  In some embedded system down and up
IP100A will cause DMA crash.  We add some for safe down and up IP100A.

Signed-off-by: Jesse Huang <jesse@icplus.com.tw>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Jesse Huang 2006-10-20 14:42:13 -07:00 committed by Jeff Garzik
parent 6b655529c3
commit acd70c2bfd
1 changed files with 8 additions and 0 deletions
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8
drivers/net/sundance.c
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@ -788,6 +788,7 @@ static int netdev_open(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->base;
unsigned long flags;
int i;
/* Do we need to reset the chip??? */
@ -832,6 +833,10 @@ static int netdev_open(struct net_device *dev)
iowrite8(0x01, ioaddr + DebugCtrl1);
netif_start_queue(dev);
spin_lock_irqsave(&np->lock, flags);
reset_tx(dev);
spin_unlock_irqrestore(&np->lock, flags);
iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
if (netif_msg_ifup(np))
@ -1651,6 +1656,9 @@ static int netdev_close(struct net_device *dev)
/* Disable interrupts by clearing the interrupt mask. */
iowrite16(0x0000, ioaddr + IntrEnable);
/* Disable Rx and Tx DMA for safely release resource */
iowrite32(0x500, ioaddr + DMACtrl);
/* Stop the chip's Tx and Rx processes. */
iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1);