diff --git a/include/asm-h8300/irq.h b/include/asm-h8300/irq.h
new file mode 100644
index 0000000..5027181
--- /dev/null
+++ b/include/asm-h8300/irq.h
@@ -0,0 +1,75 @@
+#ifndef _H8300_IRQ_H_
+#define _H8300_IRQ_H_
+
+#include <asm/ptrace.h>
+
+#if defined(__H8300H__)
+#define NR_IRQS 64
+#define EXT_IRQ0 12
+#define EXT_IRQ1 13
+#define EXT_IRQ2 14
+#define EXT_IRQ3 15
+#define EXT_IRQ4 16
+#define EXT_IRQ5 17
+#define EXT_IRQ6 18
+#define EXT_IRQ7 19
+#define EXT_IRQS 5
+
+#include <asm/regs306x.h>
+#define h8300_clear_isr(irq)                                                \
+do {                                                                        \
+	if (irq >= EXT_IRQ0 && irq <= EXT_IRQ5)                             \
+		*(volatile unsigned char *)ISR &= ~(1 << (irq - EXT_IRQ0)); \
+} while(0)
+
+#define IER_REGS *(volatile unsigned char *)IER
+#endif
+#if defined(CONFIG_CPU_H8S)
+#define NR_IRQS 128
+#define EXT_IRQ0 16
+#define EXT_IRQ1 17
+#define EXT_IRQ2 18
+#define EXT_IRQ3 19
+#define EXT_IRQ4 20
+#define EXT_IRQ5 21
+#define EXT_IRQ6 22
+#define EXT_IRQ7 23
+#define EXT_IRQ8 24
+#define EXT_IRQ9 25
+#define EXT_IRQ10 26
+#define EXT_IRQ11 27
+#define EXT_IRQ12 28
+#define EXT_IRQ13 29
+#define EXT_IRQ14 30
+#define EXT_IRQ15 31
+#define EXT_IRQS 15
+
+#include <asm/regs267x.h>
+#define h8300_clear_isr(irq)                                                 \
+do {                                                                         \
+	if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)                             \
+		*(volatile unsigned short *)ISR &= ~(1 << (irq - EXT_IRQ0)); \
+} while(0)
+
+#define IER_REGS *(volatile unsigned short *)IER
+#endif
+
+static __inline__ int irq_canonicalize(int irq)
+{
+	return irq;
+}
+
+extern void enable_irq(unsigned int);
+extern void disable_irq(unsigned int);
+
+/*
+ * Some drivers want these entry points
+ */
+#define enable_irq_nosync(x)	enable_irq(x)
+#define disable_irq_nosync(x)	disable_irq(x)
+
+struct irqaction;
+struct pt_regs;
+int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);
+
+#endif /* _H8300_IRQ_H_ */