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authorCliff Cai <cliff.cai@analog.com>2008-05-17 10:36:52 +0200
committerBryan Wu <cooloney@kernel.org>2008-05-17 10:36:52 +0200
commit86ad79321cbacdc4deebcde81849d19e26dd18e2 (patch)
tree882410e4f212f064544697bf38242b943520f3a2 /include/asm-blackfin/bfin-global.h
parentBlackfin arch: cleanup the icplb/dcplb multiple hit checks (diff)
downloadlinux-86ad79321cbacdc4deebcde81849d19e26dd18e2.tar.xz
linux-86ad79321cbacdc4deebcde81849d19e26dd18e2.zip
Blackfin arch: enable a choice to provide 4M DMA memory
support two cascaded AD73322 cards, more uncached DMA memory is needed, so add a choice to provide 4M DMA memory Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'include/asm-blackfin/bfin-global.h')
-rw-r--r--include/asm-blackfin/bfin-global.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/asm-blackfin/bfin-global.h b/include/asm-blackfin/bfin-global.h
index 716df7c85923..a9248d883675 100644
--- a/include/asm-blackfin/bfin-global.h
+++ b/include/asm-blackfin/bfin-global.h
@@ -37,7 +37,9 @@
#include <linux/linkage.h>
#include <linux/types.h>
-#if defined(CONFIG_DMA_UNCACHED_2M)
+#if defined(CONFIG_DMA_UNCACHED_4M)
+# define DMA_UNCACHED_REGION (4 * 1024 * 1024)
+#elif defined(CONFIG_DMA_UNCACHED_2M)
# define DMA_UNCACHED_REGION (2 * 1024 * 1024)
#elif defined(CONFIG_DMA_UNCACHED_1M)
# define DMA_UNCACHED_REGION (1024 * 1024)