static void
sn_end_irq(unsigned int irq)
{
#ifdef CONFIG_IA64_SGI_SN1
unsigned long long intpend_val, mask = 0x70L;
int subnode;
#endif
int nasid;
#ifdef CONFIG_IA64_SGI_SN2
unsigned long event_occurred;
#endif
irq = irq & 0xff;
#ifdef CONFIG_IA64_SGI_SN1
if (irq == SGI_UART_IRQ) {
nasid = smp_physical_node_id();
subnode = cpuid_to_subnode(smp_processor_id());
intpend_val = REMOTE_HUB_PI_L(nasid, subnode, PI_INT_PEND0);
if (intpend_val & mask) {
platform_send_ipi(smp_processor_id(), SGI_UART_IRQ, IA64_IPI_DM_INT, 0);
}
}
#endif
#ifdef CONFIG_IA64_SGI_SN2
if (irq == 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);
}
}
#endif
}
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);
}
static void
sn_ack_irq(unsigned int irq)
{
unsigned long event_occurred, mask = 0;
int nasid;
irq = irq & 0xff;
nasid = smp_physical_node_id();
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 );
__set_bit(irq, (volatile void *)pda.sn_in_service_ivecs);
}
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
}
