1 files changed, 51 insertions, 0 deletions

diff --git a/arch/openrisc/include/asm/io.h b/arch/openrisc/include/asm/io.h
new file mode 100644
index 000000000000..07f5299d6c28
--- /dev/null
+++ b/arch/openrisc/include/asm/io.h
@@ -0,0 +1,51 @@
+/*
+ * OpenRISC Linux
+ *
+ * Linux architectural port borrowing liberally from similar works of
+ * others.  All original copyrights apply as per the original source
+ * declaration.
+ *
+ * OpenRISC implementation:
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ * et al.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_OPENRISC_IO_H
+#define __ASM_OPENRISC_IO_H
+
+/*
+ * PCI: can we really do 0 here if we have no port IO?
+ */
+#define IO_SPACE_LIMIT          0
+
+/* OpenRISC has no port IO */
+#define HAVE_ARCH_PIO_SIZE      1
+#define PIO_RESERVED            0X0UL
+#define PIO_OFFSET              0
+#define PIO_MASK                0
+
+#include <asm-generic/io.h>
+
+extern void __iomem *__ioremap(phys_addr_t offset, unsigned long size,
+                                pgprot_t prot);
+
+static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size)
+{
+        return __ioremap(offset, size, PAGE_KERNEL);
+}
+
+/* #define _PAGE_CI       0x002 */
+static inline void __iomem *ioremap_nocache(phys_addr_t offset,
+                                             unsigned long size)
+{
+        return __ioremap(offset, size,
+                         __pgprot(pgprot_val(PAGE_KERNEL) | _PAGE_CI));
+}
+
+extern void iounmap(void *addr);
+#endif