dcache: Dcache line size aligned stack buffer allocation

ALLOC_CACHE_ALIGN_BUFFER shall be used in functions, which are using
stack allocated buffers for DMA transfers.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Albert ARIBAUD <albert.u.boot@aribaud.net>
---
Changes for v2:
	- ./include/cache.h has been removed and replaced with
	simpler macro added to ./include/common.h
Changes for v3:
	- change char * to char
	- defined table size definition
Changes for v4:
	- (type*) added for compiler warning fix

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

diff --git a/include/common.h b/include/common.h
index d244bd4..db93170 100644 (file)
--- a/include/common.h
+++ b/include/common.h
@@ -789,6 +789,11 @@ 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))
 
+#define ALLOC_CACHE_ALIGN_BUFFER(type, name, size) \
+       char __##name[size + CONFIG_SYS_CACHELINE_SIZE - 1]; \
+       type *name = (type*)  ALIGN(((typeof(CONFIG_SYS_CACHELINE_SIZE))\
+                                    (__##name)), (CONFIG_SYS_CACHELINE_SIZE));
+
 /* Pull in stuff for the build system */
 #ifdef DO_DEPS_ONLY
 # include <environment.h>