diff --git a/include/asm-ia64/hardirq.h b/include/asm-ia64/hardirq.h
new file mode 100644
index 0000000..33ef8f0
--- /dev/null
+++ b/include/asm-ia64/hardirq.h
@@ -0,0 +1,38 @@
+#ifndef _ASM_IA64_HARDIRQ_H
+#define _ASM_IA64_HARDIRQ_H
+
+/*
+ * Modified 1998-2002, 2004 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+
+#include <linux/config.h>
+
+#include <linux/threads.h>
+#include <linux/irq.h>
+
+#include <asm/processor.h>
+
+/*
+ * No irq_cpustat_t for IA-64.  The data is held in the per-CPU data structure.
+ */
+
+#define __ARCH_IRQ_STAT	1
+
+#define local_softirq_pending()		(local_cpu_data->softirq_pending)
+
+#define HARDIRQ_BITS	14
+
+/*
+ * The hardirq mask has to be large enough to have space for potentially all IRQ sources
+ * in the system nesting on a single CPU:
+ */
+#if (1 << HARDIRQ_BITS) < NR_IRQS
+# error HARDIRQ_BITS is too low!
+#endif
+
+extern void __iomem *ipi_base_addr;
+
+void ack_bad_irq(unsigned int irq);
+
+#endif /* _ASM_IA64_HARDIRQ_H */