From: Jan Andersson <jan@gaisler.com>
Date: Tue, 10 May 2011 23:13:33 +0000 (+0000)
Subject: sparc: add {read,write}*_be routines
X-Git-Tag: v3.0-rc1~357^2~3^2
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=21dccddf45aae2d9f973696ce06115da0d1012b6;p=karo-tx-linux.git

sparc: add {read,write}*_be routines

This patch adds {read,write}*_be big endian memory access
routines to the io.h header used on SPARC32 and SPARC64.

Tested on SPARC32 (LEON)

Signed-off-by: Jan Andersson <jan@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/arch/sparc/include/asm/io.h b/arch/sparc/include/asm/io.h
index a34b2994937a..f6902cf3cbe9 100644
--- a/arch/sparc/include/asm/io.h
+++ b/arch/sparc/include/asm/io.h
@@ -5,4 +5,17 @@
 #else
 #include <asm/io_32.h>
 #endif
+
+/*
+ * Defines used for both SPARC32 and SPARC64
+ */
+
+/* Big endian versions of memory read/write routines */
+#define readb_be(__addr)	__raw_readb(__addr)
+#define readw_be(__addr)	__raw_readw(__addr)
+#define readl_be(__addr)	__raw_readl(__addr)
+#define writeb_be(__b, __addr)	__raw_writeb(__b, __addr)
+#define writel_be(__w, __addr)	__raw_writel(__w, __addr)
+#define writew_be(__l, __addr)	__raw_writew(__l, __addr)
+
 #endif