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, 24 insertions, 0 deletions

diff --git a/arch/arm/mm/cache-v3.S b/arch/arm/mm/cache-v3.S
index 2a482731ea36..6df52dc014be 100644
--- a/arch/arm/mm/cache-v3.S
+++ b/arch/arm/mm/cache-v3.S
@@ -121,6 +121,28 @@ ENTRY(v3_dma_flush_range)
 ENTRY(v3_dma_clean_range)
         mov     pc, lr
 
+/*
+ *      dma_unmap_area(start, size, dir)
+ *      - start - kernel virtual start address
+ *      - size  - size of region
+ *      - dir   - DMA direction
+ */
+ENTRY(v3_dma_unmap_area)
+        teq     r2, #DMA_TO_DEVICE
+        bne     v3_dma_inv_range
+        /* FALLTHROUGH */
+
+/*
+ *      dma_map_area(start, size, dir)
+ *      - start - kernel virtual start address
+ *      - size  - size of region
+ *      - dir   - DMA direction
+ */
+ENTRY(v3_dma_map_area)
+        mov     pc, lr
+ENDPROC(v3_dma_unmap_area)
+ENDPROC(v3_dma_map_area)
+
         __INITDATA
 
         .type   v3_cache_fns, #object
@@ -131,6 +153,8 @@ ENTRY(v3_cache_fns)
         .long   v3_coherent_kern_range
         .long   v3_coherent_user_range
         .long   v3_flush_kern_dcache_area
+        .long   v3_dma_map_area
+        .long   v3_dma_unmap_area
         .long   v3_dma_inv_range
         .long   v3_dma_clean_range
         .long   v3_dma_flush_range