1 files changed, 52 insertions, 0 deletions

diff --git a/arch/arm/mach-ixp23xx/include/mach/io.h b/arch/arm/mach-ixp23xx/include/mach/io.h
new file mode 100644
index 00000000000..a1749d0fd89
--- /dev/null
+++ b/arch/arm/mach-ixp23xx/include/mach/io.h
@@ -0,0 +1,52 @@
+/*
+ * arch/arm/mach-ixp23xx/include/mach/io.h
+ *
+ * Original Author: Naeem M Afzal <naeem.m.afzal@intel.com>
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright (C) 2003-2005 Intel Corp.
+ * Copyright (C) 2005 MontaVista Software, Inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_IO_H
+#define __ASM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+#define __io(p)         ((void __iomem*)((p) + IXP23XX_PCI_IO_VIRT))
+#define __mem_pci(a)    (a)
+
+static inline void __iomem *
+ixp23xx_ioremap(unsigned long addr, unsigned long size, unsigned int mtype)
+{
+        if (addr >= IXP23XX_PCI_MEM_START &&
+                addr <= IXP23XX_PCI_MEM_START + IXP23XX_PCI_MEM_SIZE) {
+                if (addr + size > IXP23XX_PCI_MEM_START + IXP23XX_PCI_MEM_SIZE)
+                        return NULL;
+
+                return (void __iomem *)
+                        ((addr - IXP23XX_PCI_MEM_START) + IXP23XX_PCI_MEM_VIRT);
+        }
+
+        return __arm_ioremap(addr, size, mtype);
+}
+
+static inline void
+ixp23xx_iounmap(void __iomem *addr)
+{
+        if ((((u32)addr) >= IXP23XX_PCI_MEM_VIRT) &&
+            (((u32)addr) < IXP23XX_PCI_MEM_VIRT + IXP23XX_PCI_MEM_SIZE))
+                return;
+
+        __iounmap(addr);
+}
+
+#define __arch_ioremap  ixp23xx_ioremap
+#define __arch_iounmap  ixp23xx_iounmap
+
+
+#endif