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path: root/drivers/xen/events.c
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-rw-r--r--drivers/xen/events.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 32269bcbd88..efa683ee884 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -656,6 +656,28 @@ out:
return irq;
}
+void xen_allocate_pirq_msi(char *name, int *irq, int *pirq)
+{
+ spin_lock(&irq_mapping_update_lock);
+
+ *irq = find_unbound_irq();
+ if (*irq == -1)
+ goto out;
+
+ *pirq = find_unbound_pirq();
+ if (*pirq == -1)
+ goto out;
+
+ set_irq_chip_and_handler_name(*irq, &xen_pirq_chip,
+ handle_level_irq, name);
+
+ irq_info[*irq] = mk_pirq_info(0, *pirq, 0, 0);
+ pirq_to_irq[*pirq] = *irq;
+
+out:
+ spin_unlock(&irq_mapping_update_lock);
+}
+
int xen_destroy_irq(int irq)
{
struct irq_desc *desc;