static irqreturn_t greth_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct greth_private *greth;
u32 status, ctrl;
irqreturn_t retval = IRQ_NONE;
greth = netdev_priv(dev);
spin_lock(&greth->devlock);
/* Get the interrupt events that caused us to be here. */
status = GRETH_REGLOAD(greth->regs->status);
/* Must see if interrupts are enabled also, INT_TX|INT_RX flags may be
* set regardless of whether IRQ is enabled or not. Especially
* important when shared IRQ.
*/
ctrl = GRETH_REGLOAD(greth->regs->control);
/* Handle rx and tx interrupts through poll */
if (((status & (GRETH_INT_RE | GRETH_INT_RX)) && (ctrl & GRETH_RXI)) ||
((status & (GRETH_INT_TE | GRETH_INT_TX)) && (ctrl & GRETH_TXI))) {
retval = IRQ_HANDLED;
/* Disable interrupts and schedule poll() */
greth_disable_irqs(greth);
napi_schedule(&greth->napi);
}
mmiowb();
spin_unlock(&greth->devlock);
return retval;
}
static irqreturn_t greth_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct greth_private *greth;
u32 status;
irqreturn_t retval = IRQ_NONE;
greth = netdev_priv(dev);
spin_lock(&greth->devlock);
/* Get the interrupt events that caused us to be here. */
status = GRETH_REGLOAD(greth->regs->status);
/* Handle rx and tx interrupts through poll */
if (status & (GRETH_INT_RX | GRETH_INT_TX)) {
/* Clear interrupt status */
GRETH_REGORIN(greth->regs->status,
status & (GRETH_INT_RX | GRETH_INT_TX));
retval = IRQ_HANDLED;
/* Disable interrupts and schedule poll() */
greth_disable_irqs(greth);
napi_schedule(&greth->napi);
}
mmiowb();
spin_unlock(&greth->devlock);
return retval;
}
static int greth_close(struct net_device *dev)
{
struct greth_private *greth = netdev_priv(dev);
napi_disable(&greth->napi);
greth_disable_irqs(greth);
greth_disable_tx(greth);
greth_disable_rx(greth);
netif_stop_queue(dev);
free_irq(greth->irq, (void *) dev);
greth_clean_rings(greth);
return 0;
}
