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[IA64] Support irq migration across domain

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Add support for IRQ migration across vector domain.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Yasuaki Ishimatsu
2007-07-17 21:22:48 +09:00
committed by Tony Luck
parent 4994be1b3f
commit cd378f18cf
5 changed files with 73 additions and 12 deletions
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20
arch/ia64/kernel/iosapic.c
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@ -354,11 +354,13 @@ iosapic_set_affinity (unsigned int irq, cpumask_t mask)
irq &= (~IA64_IRQ_REDIRECTED);
/* IRQ migration across domain is not supported yet */
cpus_and(mask, mask, irq_to_domain(irq));
cpus_and(mask, mask, cpu_online_map);
if (cpus_empty(mask))
return;
if (reassign_irq_vector(irq, first_cpu(mask)))
return;
dest = cpu_physical_id(first_cpu(mask));
if (list_empty(&iosapic_intr_info[irq].rtes))
@ -376,6 +378,8 @@ iosapic_set_affinity (unsigned int irq, cpumask_t mask)
else
/* change delivery mode to fixed */
low32 |= (IOSAPIC_FIXED << IOSAPIC_DELIVERY_SHIFT);
low32 &= IOSAPIC_VECTOR_MASK;
low32 |= irq_to_vector(irq);
iosapic_intr_info[irq].low32 = low32;
iosapic_intr_info[irq].dest = dest;
@ -404,10 +408,20 @@ iosapic_end_level_irq (unsigned int irq)
{
ia64_vector vec = irq_to_vector(irq);
struct iosapic_rte_info *rte;
int do_unmask_irq = 0;
if (unlikely(irq_desc[irq].status & IRQ_MOVE_PENDING)) {
do_unmask_irq = 1;
mask_irq(irq);
}
move_native_irq(irq);
list_for_each_entry(rte, &iosapic_intr_info[irq].rtes, rte_list)
iosapic_eoi(rte->iosapic->addr, vec);
if (unlikely(do_unmask_irq)) {
move_masked_irq(irq);
unmask_irq(irq);
}
}
#define iosapic_shutdown_level_irq mask_irq