예제 #1
0
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;
	}
}
예제 #2
0
파일: c2.c 프로젝트: mecke/linux-2.6
/*
 * 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;
	}
}