Patchwork [U-Boot,06/12] sparc: cache: define ARCH_DMA_MINALIGN for DMA buffer alignment

login
register
mail settings
Submitter Anton staaf
Date Oct. 12, 2011, 9:01 p.m.
Message ID <1318453311-31349-7-git-send-email-robotboy@chromium.org>
Download mbox | patch
Permalink /patch/119297/
State Accepted
Commit 3c3f8a7f3e58a9dbf6c2f3e462ad503eae35852a
Headers show

Comments

Anton staaf - Oct. 12, 2011, 9:01 p.m.
Signed-off-by: Anton Staaf <robotboy@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Daniel Hellstrom <daniel@gaisler.com>

Change-Id: If33383ff88e0555204c4ed1534d3961587fdee3a
---
 arch/sparc/include/asm/cache.h |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

Patch

diff --git a/arch/sparc/include/asm/cache.h b/arch/sparc/include/asm/cache.h
index 03e8d94..44870e8 100644
--- a/arch/sparc/include/asm/cache.h
+++ b/arch/sparc/include/asm/cache.h
@@ -28,4 +28,14 @@ 
 #include <linux/config.h>
 #include <asm/processor.h>
 
+/*
+ * If CONFIG_SYS_CACHELINE_SIZE is defined use it for DMA alignment.  Otherwise
+ * use 32-bytes, the cacheline size for Sparc.
+ */
+#ifdef CONFIG_SYS_CACHELINE_SIZE
+#define ARCH_DMA_MINALIGN	CONFIG_SYS_CACHELINE_SIZE
+#else
+#define ARCH_DMA_MINALIGN	32
+#endif
+
 #endif