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authorAnton Staaf <robotboy@chromium.org>2011-10-17 16:46:13 -0700
committerWolfgang Denk <wd@denx.de>2011-10-23 20:50:43 +0200
commit1e41f5ad455e75d3985a0e4670ba1338c2e8faca (patch)
tree48c3538f33268a49e35268dc9b05416e1995d050
parent3620f860eff02722aa559e568f4ca87f4c304901 (diff)
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cache: include asm/cache.h for ARCH_DMA_MINALIGN definition
ARCH_DMA_MINALIGN will be used to allocate DMA buffers that are aligned correctly. In all current cases this means that the DMA buffer will be aligned to at least the L1 data cache line size of the configured architecture. If the board configuration file does not specify the architecture L1 data cache line size then the maximum line size of the architecture is used to align DMA buffers. Signed-off-by: Anton Staaf <robotboy@chromium.org> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Lukasz Majewski <l.majewski@samsung.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Ilya Yanok <yanok@emcraft.com> Cc: Laurence Withers <lwithers@guralp.com>
-rw-r--r--include/common.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/common.h b/include/common.h
index ccd3dd7..db1c7d0 100644
--- a/include/common.h
+++ b/include/common.h
@@ -834,6 +834,14 @@ int cpu_release(int nr, int argc, char * const argv[]);
#define ALIGN(x,a) __ALIGN_MASK((x),(typeof(x))(a)-1)
#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
+/*
+ * ARCH_DMA_MINALIGN is defined in asm/cache.h for each architecture. It
+ * is used to align DMA buffers.
+ */
+#ifndef __ASSEMBLY__
+#include <asm/cache.h>
+#endif
+
/* Pull in stuff for the build system */
#ifdef DO_DEPS_ONLY
# include <environment.h>