diff --git a/include/asm-h8300/hardirq.h b/include/asm-h8300/hardirq.h
new file mode 100644
index 0000000..e961bfe
--- /dev/null
+++ b/include/asm-h8300/hardirq.h
@@ -0,0 +1,27 @@
+#ifndef __H8300_HARDIRQ_H
+#define __H8300_HARDIRQ_H
+
+#include <linux/kernel.h>
+#include <linux/config.h>
+#include <linux/threads.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+typedef struct {
+	unsigned int __softirq_pending;
+} ____cacheline_aligned irq_cpustat_t;
+
+#include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */
+
+#define HARDIRQ_BITS	8
+
+/*
+ * 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
+
+#endif