C++ (Cpp) EFX_OWORD_IS_ZERO Examples

Example #1

File: falcon.c Project: DirtyDroidX/android_kernel_htc_m8ul

irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id)
{
	struct efx_nic *efx = dev_id;
	efx_oword_t *int_ker = efx->irq_status.addr;
	int syserr;
	int queues;

	if (unlikely(EFX_OWORD_IS_ZERO(*int_ker))) {
		netif_vdbg(efx, intr, efx->net_dev,
			   "IRQ %d on CPU %d not for me\n", irq,
			   raw_smp_processor_id());
		return IRQ_NONE;
	}
	efx->last_irq_cpu = raw_smp_processor_id();
	netif_vdbg(efx, intr, efx->net_dev,
		   "IRQ %d on CPU %d status " EFX_OWORD_FMT "\n",
		   irq, raw_smp_processor_id(), EFX_OWORD_VAL(*int_ker));

	
	syserr = EFX_OWORD_FIELD(*int_ker, FSF_AZ_NET_IVEC_FATAL_INT);
	if (unlikely(syserr))
		return efx_nic_fatal_interrupt(efx);

	BUILD_BUG_ON(FSF_AZ_NET_IVEC_INT_Q_WIDTH > EFX_MAX_CHANNELS);
	queues = EFX_OWORD_FIELD(*int_ker, FSF_AZ_NET_IVEC_INT_Q);
	EFX_ZERO_OWORD(*int_ker);
	wmb(); 
	falcon_irq_ack_a1(efx);

	if (queues & 1)
		efx_schedule_channel_irq(efx_get_channel(efx, 0));
	if (queues & 2)
		efx_schedule_channel_irq(efx_get_channel(efx, 1));
	return IRQ_HANDLED;
}

Example #2

File: falcon.c Project: AdrianHuang/uclinux-robutest

irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id)
{
	struct efx_nic *efx = dev_id;
	efx_oword_t *int_ker = efx->irq_status.addr;
	struct efx_channel *channel;
	int syserr;
	int queues;

	/* Check to see if this is our interrupt.  If it isn't, we
	 * exit without having touched the hardware.
	 */
	if (unlikely(EFX_OWORD_IS_ZERO(*int_ker))) {
		EFX_TRACE(efx, "IRQ %d on CPU %d not for me\n", irq,
			  raw_smp_processor_id());
		return IRQ_NONE;
	}
	efx->last_irq_cpu = raw_smp_processor_id();
	EFX_TRACE(efx, "IRQ %d on CPU %d status " EFX_OWORD_FMT "\n",
		  irq, raw_smp_processor_id(), EFX_OWORD_VAL(*int_ker));

	/* Check to see if we have a serious error condition */
	syserr = EFX_OWORD_FIELD(*int_ker, FSF_AZ_NET_IVEC_FATAL_INT);
	if (unlikely(syserr))
		return efx_nic_fatal_interrupt(efx);

	/* Determine interrupting queues, clear interrupt status
	 * register and acknowledge the device interrupt.
	 */
	BUILD_BUG_ON(FSF_AZ_NET_IVEC_INT_Q_WIDTH > EFX_MAX_CHANNELS);
	queues = EFX_OWORD_FIELD(*int_ker, FSF_AZ_NET_IVEC_INT_Q);
	EFX_ZERO_OWORD(*int_ker);
	wmb(); /* Ensure the vector is cleared before interrupt ack */
	falcon_irq_ack_a1(efx);

	/* Schedule processing of any interrupting queues */
	channel = &efx->channel[0];
	while (queues) {
		if (queues & 0x01)
			efx_schedule_channel(channel);
		channel++;
		queues >>= 1;
	}

	return IRQ_HANDLED;
}