From b8d09359de3a3edf98f003ff229c63dcd7a23654 Mon Sep 17 00:00:00 2001
From: Ralf Baechle <ralf@linux-mips.org>
Date: Wed, 15 Feb 2006 13:06:34 +0000
Subject: [PATCH] --- yaml --- r: 21965 b: refs/heads/master c:
 bbad8123f3a40a7b262e8e52d0bc10da67d719bb h: refs/heads/master i:   21963:
 1d0032d351a41b6fb0d5b8ffaa3c69d7e5e724d4 v: v3

---
 [refs]                             |  2 +-
 trunk/include/asm-mips/byteorder.h | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index fd001f47f09e..80dd3a8cdd49 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e87dddeb92618d9dbb8b9f946a193739a4447609
+refs/heads/master: bbad8123f3a40a7b262e8e52d0bc10da67d719bb
diff --git a/trunk/include/asm-mips/byteorder.h b/trunk/include/asm-mips/byteorder.h
index 584f8128fffd..aefc02f16fd8 100644
--- a/trunk/include/asm-mips/byteorder.h
+++ b/trunk/include/asm-mips/byteorder.h
@@ -39,6 +39,24 @@ 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__)