1 files changed, 67 insertions, 0 deletions
diff --git a/arch/h8300/include/asm/io.h b/arch/h8300/include/asm/io.h
new file mode 100644
index 000000000..096d99580
--- /dev/null
+++ b/arch/h8300/include/asm/io.h
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _H8300_IO_H
+#define _H8300_IO_H
+
+#ifdef __KERNEL__
+
+#include <linux/types.h>
+
+/* H8/300 internal I/O functions */
+
+#define __raw_readb __raw_readb
+static inline u8 __raw_readb(const volatile void __iomem *addr)
+{
+	return *(volatile u8 *)addr;
+}
+
+#define __raw_readw __raw_readw
+static inline u16 __raw_readw(const volatile void __iomem *addr)
+{
+	return *(volatile u16 *)addr;
+}
+
+#define __raw_readl __raw_readl
+static inline u32  __raw_readl(const volatile void __iomem *addr)
+{
+	return *(volatile u32 *)addr;
+}
+
+#define __raw_writeb __raw_writeb
+static inline void __raw_writeb(u8 b, const volatile void __iomem *addr)
+{
+	*(volatile u8 *)addr = b;
+}
+
+#define __raw_writew __raw_writew
+static inline void __raw_writew(u16 b, const volatile void __iomem *addr)
+{
+	*(volatile u16 *)addr = b;
+}
+
+#define __raw_writel __raw_writel
+static inline void __raw_writel(u32 b, const volatile void __iomem *addr)
+{
+	*(volatile u32 *)addr = b;
+}
+
+static inline void ctrl_bclr(int b, void __iomem *addr)
+{
+	if (__builtin_constant_p(b))
+		__asm__("bclr %1,%0" : "+WU"(*(u8 *)addr): "i"(b));
+	else
+		__asm__("bclr %w1,%0" : "+WU"(*(u8 *)addr): "r"(b));
+}
+
+static inline void ctrl_bset(int b, void __iomem *addr)
+{
+	if (__builtin_constant_p(b))
+		__asm__("bset %1,%0" : "+WU"(*(u8 *)addr): "i"(b));
+	else
+		__asm__("bset %w1,%0" : "+WU"(*(u8 *)addr): "r"(b));
+}
+
+#include <asm-generic/io.h>
+
+#endif /* __KERNEL__ */
+
+#endif /* _H8300_IO_H */