ARM: dma-mapping: provide per-cpu type map/unmap functions

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-By: Santosh Shilimkar <santosh.shilimkar@ti.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 730aefcfbee..4c733236e34 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -213,6 +213,9 @@ struct cpu_cache_fns {
         void (*coherent_user_range)(unsigned long, unsigned long);
         void (*flush_kern_dcache_area)(void *, size_t);
 
+        void (*dma_map_area)(const void *, size_t, int);
+        void (*dma_unmap_area)(const void *, size_t, int);
+
         void (*dma_inv_range)(const void *, const void *);
         void (*dma_clean_range)(const void *, const void *);
         void (*dma_flush_range)(const void *, const void *);
@@ -244,6 +247,8 @@ extern struct cpu_cache_fns cpu_cache;
  * is visible to DMA, or data written by DMA to system memory is
  * visible to the CPU.
  */
+#define dmac_map_area                   cpu_cache.dma_map_area
+#define dmac_unmap_area         cpu_cache.dma_unmap_area
 #define dmac_inv_range                  cpu_cache.dma_inv_range
 #define dmac_clean_range                cpu_cache.dma_clean_range
 #define dmac_flush_range                cpu_cache.dma_flush_range
@@ -270,10 +275,14 @@ extern void __cpuc_flush_dcache_area(void *, size_t);
  * is visible to DMA, or data written by DMA to system memory is
  * visible to the CPU.
  */
+#define dmac_map_area                   __glue(_CACHE,_dma_map_area)
+#define dmac_unmap_area         __glue(_CACHE,_dma_unmap_area)
 #define dmac_inv_range                  __glue(_CACHE,_dma_inv_range)
 #define dmac_clean_range                __glue(_CACHE,_dma_clean_range)
 #define dmac_flush_range                __glue(_CACHE,_dma_flush_range)
 
+extern void dmac_map_area(const void *, size_t, int);
+extern void dmac_unmap_area(const void *, size_t, int);
 extern void dmac_inv_range(const void *, const void *);
 extern void dmac_clean_range(const void *, const void *);
 extern void dmac_flush_range(const void *, const void *);