static void
sn1_handle_irq(int irq, void *dummy, struct pt_regs *regs)
{
int bit, cnode;
struct sn1_cnode_action_list *alp;
struct sn1_intr_action *ap;
void (*handler)(int, void *, struct pt_regs *);
unsigned long flags = 0;
int cpuid = smp_processor_id();
bit = irq_to_bit_pos(irq);
LOCAL_HUB_CLR_INTR(bit);
cnode = cpuid_to_cnodeid(cpuid);
alp = sn1_node_actions[cnode];
ap = alp[irq].action_list;
if (ap == NULL) {
return;
}
while (ap) {
flags |= ap->flags;
handler = ap->handler;
(*handler)(irq,ap->intr_arg,regs);
ap = ap->next;
}
if ((flags & SA_SAMPLE_RANDOM) != 0)
add_interrupt_randomness(irq);
return;
}
static void
sn1_end_irq(unsigned int irq)
{
int bit;
bit = irq_to_bit_pos(irq);
LOCAL_HUB_CLR_INTR(bit);
}
static void
sn_ack_irq(unsigned int irq)
{
#ifdef CONFIG_IA64_SGI_SN1
int bit = -1;
unsigned long long intpend_val;
int subnode;
#endif
#ifdef CONFIG_IA64_SGI_SN2
unsigned long event_occurred, mask = 0;
#endif
int nasid;
irq = irq & 0xff;
nasid = smp_physical_node_id();
#ifdef CONFIG_IA64_SGI_SN1
subnode = cpuid_to_subnode(smp_processor_id());
if (irq == SGI_UART_IRQ) {
intpend_val = REMOTE_HUB_PI_L(nasid, subnode, PI_INT_PEND0);
if (intpend_val & (1L<<GFX_INTR_A) ) {
bit = GFX_INTR_A;
REMOTE_HUB_PI_CLR_INTR(nasid, subnode, bit);
}
if ( intpend_val & (1L<<GFX_INTR_B) ) {
bit = GFX_INTR_B;
REMOTE_HUB_PI_CLR_INTR(nasid, subnode, bit);
}
if (intpend_val & (1L<<PG_MIG_INTR) ) {
bit = PG_MIG_INTR;
REMOTE_HUB_PI_CLR_INTR(nasid, subnode, bit);
}
if (intpend_val & (1L<<CC_PEND_A)) {
bit = CC_PEND_A;
REMOTE_HUB_PI_CLR_INTR(nasid, subnode, bit);
}
if (intpend_val & (1L<<CC_PEND_B)) {
bit = CC_PEND_B;
REMOTE_HUB_PI_CLR_INTR(nasid, subnode, bit);
}
return;
}
bit = irq_to_bit_pos(irq);
REMOTE_HUB_PI_CLR_INTR(nasid, subnode, bit);
#endif
#ifdef CONFIG_IA64_SGI_SN2
event_occurred = HUB_L( (unsigned long *)GLOBAL_MMR_ADDR(nasid,SH_EVENT_OCCURRED) );
if (event_occurred & SH_EVENT_OCCURRED_UART_INT_MASK) {
mask |= (1 << SH_EVENT_OCCURRED_UART_INT_SHFT);
}
if (event_occurred & SH_EVENT_OCCURRED_IPI_INT_MASK) {
mask |= (1 << SH_EVENT_OCCURRED_IPI_INT_SHFT);
}
if (event_occurred & SH_EVENT_OCCURRED_II_INT0_MASK) {
mask |= (1 << SH_EVENT_OCCURRED_II_INT0_SHFT);
}
if (event_occurred & SH_EVENT_OCCURRED_II_INT1_MASK) {
mask |= (1 << SH_EVENT_OCCURRED_II_INT1_SHFT);
}
HUB_S((unsigned long *)GLOBAL_MMR_ADDR(nasid, SH_EVENT_OCCURRED_ALIAS), mask );
#endif
}
