microblaze: Add irq_create_{of_,}mapping functions

Support function for PCI. We don't use any advance mapping mechanism
that's why implementation is simple.

Signed-off-by: Michal Simek <monstr@monstr.eu>

1 files changed, 15 insertions, 0 deletions

diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c
index 0f06034d1fe0..6f39e2c001f3 100644
--- a/arch/microblaze/kernel/irq.c
+++ b/arch/microblaze/kernel/irq.c
@@ -93,3 +93,18 @@ skip:
         }
         return 0;
 }
+
+/* MS: There is no any advance mapping mechanism. We are using simple 32bit
+  intc without any cascades or any connection that's why mapping is 1:1 */
+unsigned int irq_create_mapping(struct irq_host *host, irq_hw_number_t hwirq)
+{
+        return hwirq;
+}
+EXPORT_SYMBOL_GPL(irq_create_mapping);
+
+unsigned int irq_create_of_mapping(struct device_node *controller,
+                                        u32 *intspec, unsigned int intsize)
+{
+        return intspec[0];
+}
+EXPORT_SYMBOL_GPL(irq_create_of_mapping);