diff mbox

[U-Boot,v2,02/11] m68k: cache: define ARCH_DMA_MINALIGN for DMA buffer alignment

Message ID 1318895173-32634-3-git-send-email-robotboy@chromium.org
State Not Applicable
Headers show

Commit Message

Anton staaf Oct. 17, 2011, 11:46 p.m. UTC 
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 files changed, 10 insertions(+), 0 deletions(-)
diff mbox

Patch

diff --git a/arch/m68k/include/asm/cache.h b/arch/m68k/include/asm/cache.h
index 7c84e48..5c9bb30 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 */