[IA64] Add mapping table between irq and vector

Add mapping tables between irqs and vectors, and its management code.
This is necessary for supporting multiple vector domain because 1:1
mapping between irq and vector will be changed to n:1.

The irq == vector relationship between irqs and vectors is explicitly
remained for percpu interrupts, platform interrupts, isa IRQs and
vectors assigned using assign_irq_vector() because some programs might
depend on it.

And I should consider the following problem.

When pci drivers enabled/disabled devices dynamically, its irq number
is changed to the different one. Therefore, suspend/resume code may
happen problem.

To fix this problem, I bound gsi to irq.

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>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 3c9d8e6089cf..9f5c90b594b9 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -395,9 +395,13 @@ smp_callin (void)
         fix_b0_for_bsp();
 
         lock_ipi_calllock();
+        spin_lock(&vector_lock);
+        /* Setup the per cpu irq handling data structures */
+        __setup_vector_irq(cpuid);
         cpu_set(cpuid, cpu_online_map);
         unlock_ipi_calllock();
         per_cpu(cpu_state, cpuid) = CPU_ONLINE;
+        spin_unlock(&vector_lock);
 
         smp_setup_percpu_timer();