From a9c9147eb9b1dba0ce567a41897c7773b4d1b0bc Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 26 Nov 2009 16:19:58 +0000 Subject: ARM: dma-mapping: provide per-cpu type map/unmap functions Signed-off-by: Russell King Tested-By: Santosh Shilimkar --- arch/arm/mm/cache-v4wb.S | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'arch/arm/mm/cache-v4wb.S') diff --git a/arch/arm/mm/cache-v4wb.S b/arch/arm/mm/cache-v4wb.S index 3dbedf1e..32e7a74 100644 --- a/arch/arm/mm/cache-v4wb.S +++ b/arch/arm/mm/cache-v4wb.S @@ -216,6 +216,30 @@ ENTRY(v4wb_dma_clean_range) .globl v4wb_dma_flush_range .set v4wb_dma_flush_range, v4wb_coherent_kern_range +/* + * dma_map_area(start, size, dir) + * - start - kernel virtual start address + * - size - size of region + * - dir - DMA direction + */ +ENTRY(v4wb_dma_map_area) + add r1, r1, r0 + cmp r2, #DMA_TO_DEVICE + beq v4wb_dma_clean_range + bcs v4wb_dma_inv_range + b v4wb_dma_flush_range +ENDPROC(v4wb_dma_map_area) + +/* + * dma_unmap_area(start, size, dir) + * - start - kernel virtual start address + * - size - size of region + * - dir - DMA direction + */ +ENTRY(v4wb_dma_unmap_area) + mov pc, lr +ENDPROC(v4wb_dma_unmap_area) + __INITDATA .type v4wb_cache_fns, #object @@ -226,6 +250,8 @@ ENTRY(v4wb_cache_fns) .long v4wb_coherent_kern_range .long v4wb_coherent_user_range .long v4wb_flush_kern_dcache_area + .long v4wb_dma_map_area + .long v4wb_dma_unmap_area .long v4wb_dma_inv_range .long v4wb_dma_clean_range .long v4wb_dma_flush_range -- cgit v1.1