1 files changed, 42 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-bcm63xx/ioremap.h b/arch/mips/include/asm/mach-bcm63xx/ioremap.h
new file mode 100644
index 00000000000..ef94ba73646
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/ioremap.h
@@ -0,0 +1,42 @@
+#ifndef BCM63XX_IOREMAP_H_
+#define BCM63XX_IOREMAP_H_
+
+#include <bcm63xx_cpu.h>
+
+static inline phys_t fixup_bigphys_addr(phys_t phys_addr, phys_t size)
+{
+        return phys_addr;
+}
+
+static inline int is_bcm63xx_internal_registers(phys_t offset)
+{
+        switch (bcm63xx_get_cpu_id()) {
+        case BCM6338_CPU_ID:
+        case BCM6345_CPU_ID:
+        case BCM6348_CPU_ID:
+        case BCM6358_CPU_ID:
+                if (offset >= 0xfff00000)
+                        return 1;
+                break;
+        case BCM6368_CPU_ID:
+                if (offset >= 0xb0000000 && offset < 0xb1000000)
+                        return 1;
+                break;
+        }
+        return 0;
+}
+
+static inline void __iomem *plat_ioremap(phys_t offset, unsigned long size,
+                                         unsigned long flags)
+{
+        if (is_bcm63xx_internal_registers(offset))
+                return (void __iomem *)offset;
+        return NULL;
+}
+
+static inline int plat_iounmap(const volatile void __iomem *addr)
+{
+        return is_bcm63xx_internal_registers((unsigned long)addr);
+}
+
+#endif /* BCM63XX_IOREMAP_H_ */