diff options
Diffstat (limited to 'arch/arm/mm/proc-arm1022.S')
| -rw-r--r-- | arch/arm/mm/proc-arm1022.S | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/arm/mm/proc-arm1022.S b/arch/arm/mm/proc-arm1022.S index 20a5b1b31a7..ce13e4a827d 100644 --- a/arch/arm/mm/proc-arm1022.S +++ b/arch/arm/mm/proc-arm1022.S @@ -247,7 +247,7 @@ ENTRY(arm1022_flush_kern_dcache_area) * * (same as v4wb) */ -ENTRY(arm1022_dma_inv_range) +arm1022_dma_inv_range: mov ip, #0 #ifndef CONFIG_CPU_DCACHE_DISABLE tst r0, #CACHE_DLINESIZE - 1 @@ -273,7 +273,7 @@ ENTRY(arm1022_dma_inv_range) * * (same as v4wb) */ -ENTRY(arm1022_dma_clean_range) +arm1022_dma_clean_range: mov ip, #0 #ifndef CONFIG_CPU_DCACHE_DISABLE bic r0, r0, #CACHE_DLINESIZE - 1 @@ -305,6 +305,30 @@ ENTRY(arm1022_dma_flush_range) mcr p15, 0, ip, c7, c10, 4 @ drain WB mov pc, lr +/* + * dma_map_area(start, size, dir) + * - start - kernel virtual start address + * - size - size of region + * - dir - DMA direction + */ +ENTRY(arm1022_dma_map_area) + add r1, r1, r0 + cmp r2, #DMA_TO_DEVICE + beq arm1022_dma_clean_range + bcs arm1022_dma_inv_range + b arm1022_dma_flush_range +ENDPROC(arm1022_dma_map_area) + +/* + * dma_unmap_area(start, size, dir) + * - start - kernel virtual start address + * - size - size of region + * - dir - DMA direction + */ +ENTRY(arm1022_dma_unmap_area) + mov pc, lr +ENDPROC(arm1022_dma_unmap_area) + ENTRY(arm1022_cache_fns) .long arm1022_flush_kern_cache_all .long arm1022_flush_user_cache_all @@ -312,8 +336,8 @@ ENTRY(arm1022_cache_fns) .long arm1022_coherent_kern_range .long arm1022_coherent_user_range .long arm1022_flush_kern_dcache_area - .long arm1022_dma_inv_range - .long arm1022_dma_clean_range + .long arm1022_dma_map_area + .long arm1022_dma_unmap_area .long arm1022_dma_flush_range .align 5 |