static irqreturn_t c2_interrupt(int irq, void *dev_id)
{
unsigned int netisr0, dmaisr;
int handled = 0;
struct c2_dev *c2dev = (struct c2_dev *) dev_id;
netisr0 = readl(c2dev->regs + C2_NISR0);
if (netisr0) {
c2_rx_interrupt(c2dev->netdev);
c2_tx_interrupt(c2dev->netdev);
writel(netisr0, c2dev->regs + C2_NISR0);
handled++;
}
dmaisr = readl(c2dev->regs + C2_DISR);
if (dmaisr) {
writel(dmaisr, c2dev->regs + C2_DISR);
c2_rnic_interrupt(c2dev);
handled++;
}
if (handled) {
return IRQ_HANDLED;
} else {
return IRQ_NONE;
}
}
/*
* Handle netisr0 TX & RX interrupts.
*/
static irqreturn_t c2_interrupt(int irq, void *dev_id)
{
unsigned int netisr0, dmaisr;
int handled = 0;
struct c2_dev *c2dev = (struct c2_dev *) dev_id;
/* Process CCILNET interrupts */
netisr0 = readl(c2dev->regs + C2_NISR0);
if (netisr0) {
/*
* There is an issue with the firmware that always
* provides the status of RX for both TX & RX
* interrupts. So process both queues here.
*/
c2_rx_interrupt(c2dev->netdev);
c2_tx_interrupt(c2dev->netdev);
/* Clear the interrupt */
writel(netisr0, c2dev->regs + C2_NISR0);
handled++;
}
/* Process RNIC interrupts */
dmaisr = readl(c2dev->regs + C2_DISR);
if (dmaisr) {
writel(dmaisr, c2dev->regs + C2_DISR);
c2_rnic_interrupt(c2dev);
handled++;
}
if (handled) {
return IRQ_HANDLED;
} else {
return IRQ_NONE;
}
}