From a8fc12eb8e7ff6a97c45d921fdf28dcaaba9c8b6 Mon Sep 17 00:00:00 2001
From: Anton Staaf <robotboy@chromium.org>
Date: Mon, 17 Oct 2011 16:46:04 -0700
Subject: m68k: cache: define ARCH_DMA_MINALIGN for DMA buffer alignment

Signed-off-by: Anton Staaf <robotboy@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Jason Jin <jason.jin@freescale.com>
---
 arch/m68k/include/asm/cache.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'arch')

diff --git a/arch/m68k/include/asm/cache.h b/arch/m68k/include/asm/cache.h
index 7c84e48471..5c9bb30835 100644
--- a/arch/m68k/include/asm/cache.h
+++ b/arch/m68k/include/asm/cache.h
@@ -207,4 +207,14 @@ void dcache_invalid(void);
 
 #endif
 
+/*
+ * m68k uses 16 byte L1 data cache line sizes.  Use this for DMA buffer
+ * alignment unless the board configuration has specified a new value.
+ */
+#ifdef CONFIG_SYS_CACHELINE_SIZE
+#define ARCH_DMA_MINALIGN	CONFIG_SYS_CACHELINE_SIZE
+#else
+#define ARCH_DMA_MINALIGN	16
+#endif
+
 #endif				/* __CACHE_H */
-- 
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