[MIPS] Make ioremap() work on TX39/49 special unmapped segment

[linux-2.6-omap-h63xx.git] / include / asm-mips / mach-jmr3927 / ioremap.h

diff --git a/include/asm-mips/mach-jmr3927/ioremap.h b/include/asm-mips/mach-jmr3927/ioremap.h
new file mode 100644 (file)
index 0000000..aa131ad
--- /dev/null
+++ b/include/asm-mips/mach-jmr3927/ioremap.h
@@ -0,0 +1,38 @@
+/*
+ *     include/asm-mips/mach-jmr3927/ioremap.h
+ *
+ *     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_MACH_JMR3927_IOREMAP_H
+#define __ASM_MACH_JMR3927_IOREMAP_H
+
+#include <linux/types.h>
+
+/*
+ * Allow physical addresses to be fixed up to help peripherals located
+ * outside the low 32-bit range -- generic pass-through version.
+ */
+static inline phys_t fixup_bigphys_addr(phys_t phys_addr, phys_t size)
+{
+       return phys_addr;
+}
+
+static inline void __iomem *plat_ioremap(phys_t offset, unsigned long size,
+       unsigned long flags)
+{
+#define TXX9_DIRECTMAP_BASE    0xff000000ul
+       if (offset >= TXX9_DIRECTMAP_BASE &&
+           offset < TXX9_DIRECTMAP_BASE + 0xf0000)
+               return (void __iomem *)offset;
+       return NULL;
+}
+
+static inline int plat_iounmap(const volatile void __iomem *addr)
+{
+       return (unsigned long)addr >= TXX9_DIRECTMAP_BASE;
+}
+
+#endif /* __ASM_MACH_JMR3927_IOREMAP_H */