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authorIsaku Yamahata <yamahata@valinux.co.jp>2008-05-19 22:13:43 +0900
committerTony Luck <tony.luck@intel.com>2008-05-27 15:11:10 -0700
commit85cbc503787d577c215f9540c57294e1ec799144 (patch)
tree040eabd9681d2691f777574283de9963aa8f2e05 /arch/ia64
parent33b39e84209b0308b572dce017df7ee9b63f086c (diff)
[IA64] pvops: add hooks, pv_irq_ops, to paravirtualized irq related operations.
introduce pv_irq_ops which adds hooks to paravirtualize irq related operations. On virtualized environment, interruption may be replaced by something virtualization friendly. So the irq related operation also may need paravirtualization. This patch adds necessary hooks to paravirtualize irq related operations. Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/kernel/irq_ia64.c18
-rw-r--r--arch/ia64/kernel/paravirt.c15
2 files changed, 28 insertions, 5 deletions
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index c48171bc796..28d3d483db9 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -196,7 +196,7 @@ static void clear_irq_vector(int irq)
}
int
-assign_irq_vector (int irq)
+ia64_native_assign_irq_vector (int irq)
{
unsigned long flags;
int vector, cpu;
@@ -222,7 +222,7 @@ assign_irq_vector (int irq)
}
void
-free_irq_vector (int vector)
+ia64_native_free_irq_vector (int vector)
{
if (vector < IA64_FIRST_DEVICE_VECTOR ||
vector > IA64_LAST_DEVICE_VECTOR)
@@ -622,7 +622,7 @@ static struct irqaction tlb_irqaction = {
#endif
void
-register_percpu_irq (ia64_vector vec, struct irqaction *action)
+ia64_native_register_percpu_irq (ia64_vector vec, struct irqaction *action)
{
irq_desc_t *desc;
unsigned int irq;
@@ -637,13 +637,21 @@ register_percpu_irq (ia64_vector vec, struct irqaction *action)
}
void __init
-init_IRQ (void)
+ia64_native_register_ipi(void)
{
- register_percpu_irq(IA64_SPURIOUS_INT_VECTOR, NULL);
#ifdef CONFIG_SMP
register_percpu_irq(IA64_IPI_VECTOR, &ipi_irqaction);
register_percpu_irq(IA64_IPI_RESCHEDULE, &resched_irqaction);
register_percpu_irq(IA64_IPI_LOCAL_TLB_FLUSH, &tlb_irqaction);
+#endif
+}
+
+void __init
+init_IRQ (void)
+{
+ ia64_register_ipi();
+ register_percpu_irq(IA64_SPURIOUS_INT_VECTOR, NULL);
+#ifdef CONFIG_SMP
#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_DIG)
if (vector_domain_type != VECTOR_DOMAIN_NONE) {
BUG_ON(IA64_FIRST_DEVICE_VECTOR != IA64_IRQ_MOVE_VECTOR);
diff --git a/arch/ia64/kernel/paravirt.c b/arch/ia64/kernel/paravirt.c
index 65c211b2f98..ba5383be03c 100644
--- a/arch/ia64/kernel/paravirt.c
+++ b/arch/ia64/kernel/paravirt.c
@@ -337,3 +337,18 @@ struct pv_iosapic_ops pv_iosapic_ops = {
.__read = ia64_native_iosapic_read,
.__write = ia64_native_iosapic_write,
};
+
+/***************************************************************************
+ * pv_irq_ops
+ * irq operations
+ */
+
+struct pv_irq_ops pv_irq_ops = {
+ .register_ipi = ia64_native_register_ipi,
+
+ .assign_irq_vector = ia64_native_assign_irq_vector,
+ .free_irq_vector = ia64_native_free_irq_vector,
+ .register_percpu_irq = ia64_native_register_percpu_irq,
+
+ .resend_irq = ia64_native_resend_irq,
+};