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-rw-r--r--arch/c6x/include/asm/checksum.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/c6x/include/asm/checksum.h b/arch/c6x/include/asm/checksum.h
new file mode 100644
index 00000000000..7246816d6e4
--- /dev/null
+++ b/arch/c6x/include/asm/checksum.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2011 Texas Instruments Incorporated
+ * Author: Mark Salter <msalter@redhat.com>
+ *
+ * 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_C6X_CHECKSUM_H
+#define _ASM_C6X_CHECKSUM_H
+
+static inline __wsum
+csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
+ unsigned short proto, __wsum sum)
+{
+ unsigned long long tmp;
+
+ asm ("add .d1 %1,%5,%1\n"
+ "|| addu .l1 %3,%4,%0\n"
+ "addu .l1 %2,%0,%0\n"
+#ifndef CONFIG_CPU_BIG_ENDIAN
+ "|| shl .s1 %1,8,%1\n"
+#endif
+ "addu .l1 %1,%0,%0\n"
+ "add .l1 %P0,%p0,%2\n"
+ : "=&a"(tmp), "+a"(len), "+a"(sum)
+ : "a" (saddr), "a" (daddr), "a" (proto));
+ return sum;
+}
+#define csum_tcpudp_nofold csum_tcpudp_nofold
+
+#include <asm-generic/checksum.h>
+
+#endif /* _ASM_C6X_CHECKSUM_H */