Exemple #1
0
static void sn_end_irq(unsigned int irq)
{
	int ivec;
	u64 event_occurred;

	ivec = irq & 0xff;
	if (ivec == SGI_UART_VECTOR) {
		event_occurred = HUB_L((u64*)LOCAL_MMR_ADDR (SH_EVENT_OCCURRED));
		/* If the UART bit is set here, we may have received an
		 * interrupt from the UART that the driver missed.  To
		 * make sure, we IPI ourselves to force us to look again.
		 */
		if (event_occurred & SH_EVENT_OCCURRED_UART_INT_MASK) {
			platform_send_ipi(smp_processor_id(), SGI_UART_VECTOR,
					  IA64_IPI_DM_INT, 0);
		}
	}
	__clear_bit(ivec, (volatile void *)pda->sn_in_service_ivecs);
	if (sn_force_interrupt_flag)
		force_interrupt(irq);
}
static void
sn_end_irq(unsigned int irq)
{
	int nasid;
	int ivec;
	unsigned long event_occurred;

	ivec = irq & 0xff;
	if (ivec == SGI_UART_VECTOR) {
		nasid = smp_physical_node_id();
		event_occurred = HUB_L( (unsigned long *)GLOBAL_MMR_ADDR(nasid,SH_EVENT_OCCURRED) );
		// If the UART bit is set here, we may have received an interrupt from the
		// UART that the driver missed.  To make sure, we IPI ourselves to force us
		// to look again.
		if (event_occurred & SH_EVENT_OCCURRED_UART_INT_MASK) {
				platform_send_ipi(smp_processor_id(), SGI_UART_VECTOR, IA64_IPI_DM_INT, 0);
		}
	}
	clear_bit(ivec, (volatile void *)pda.sn_in_service_ivecs);
	if (sn_force_interrupt_flag)
		force_interrupt(irq);
}