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-v4wt.S | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'arch/arm/mm/cache-v4wt.S') diff --git a/arch/arm/mm/cache-v4wt.S b/arch/arm/mm/cache-v4wt.S index b3b7410270b4..3d8dad5b2650 100644 --- a/arch/arm/mm/cache-v4wt.S +++ b/arch/arm/mm/cache-v4wt.S @@ -172,6 +172,29 @@ ENTRY(v4wt_dma_clean_range) .globl v4wt_dma_flush_range .equ v4wt_dma_flush_range, v4wt_dma_inv_range +/* + * dma_unmap_area(start, size, dir) + * - start - kernel virtual start address + * - size - size of region + * - dir - DMA direction + */ +ENTRY(v4wt_dma_unmap_area) + add r1, r1, r0 + teq r2, #DMA_TO_DEVICE + bne v4wt_dma_inv_range + /* FALLTHROUGH */ + +/* + * dma_map_area(start, size, dir) + * - start - kernel virtual start address + * - size - size of region + * - dir - DMA direction + */ +ENTRY(v4wt_dma_map_area) + mov pc, lr +ENDPROC(v4wt_dma_unmap_area) +ENDPROC(v4wt_dma_map_area) + __INITDATA .type v4wt_cache_fns, #object @@ -182,6 +205,8 @@ ENTRY(v4wt_cache_fns) .long v4wt_coherent_kern_range .long v4wt_coherent_user_range .long v4wt_flush_kern_dcache_area + .long v4wt_dma_map_area + .long v4wt_dma_unmap_area .long v4wt_dma_inv_range .long v4wt_dma_clean_range .long v4wt_dma_flush_range -- cgit