[MIPS] Fix computation of PGDIR_SHIFT for 16K pagesize on 32-bit kernels.

[linux-2.6-omap-h63xx.git] / include / asm-mips / byteorder.h

diff --git a/include/asm-mips/byteorder.h b/include/asm-mips/byteorder.h
index 584f8128fffdb580f9973a72590c09c48c59c0cc..eee83cbdf2b08c7a22644255b153a8fcace0ec5e 100644 (file)
--- a/include/asm-mips/byteorder.h
+++ b/include/asm-mips/byteorder.h
@@ -8,7 +8,6 @@
 #ifndef _ASM_BYTEORDER_H
 #define _ASM_BYTEORDER_H
 
-#include <linux/config.h>
 #include <linux/compiler.h>
 #include <asm/types.h>
 
@@ -39,6 +38,24 @@ static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
 }
 #define __arch__swab32(x)      ___arch__swab32(x)
 
+#ifdef CONFIG_CPU_MIPS64_R2
+
+static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
+{
+       __asm__(
+       "       dsbh    %0, %1                  \n"
+       "       dshd    %0, %0                  \n"
+       "       drotr   %0, %0, 32              \n"
+       : "=r" (x)
+       : "r" (x));
+
+       return x;
+}
+
+#define __arch__swab64(x)      ___arch__swab64(x)
+
+#endif /* CONFIG_CPU_MIPS64_R2 */
+
 #endif /* CONFIG_CPU_MIPSR2 */
 
 #if !defined(__STRICT_ANSI__) || defined(__KERNEL__)