diff options
Diffstat (limited to 'arch/arm/mm/proc-arm946.S')
| -rw-r--r-- | arch/arm/mm/proc-arm946.S | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/arm/mm/proc-arm946.S b/arch/arm/mm/proc-arm946.S index 9a951239c86c..1664b6aaff79 100644 --- a/arch/arm/mm/proc-arm946.S +++ b/arch/arm/mm/proc-arm946.S @@ -215,7 +215,7 @@ ENTRY(arm946_flush_kern_dcache_area) * - end - virtual end address * (same as arm926) */ -ENTRY(arm946_dma_inv_range) +arm946_dma_inv_range: #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH tst r0, #CACHE_DLINESIZE - 1 mcrne p15, 0, r0, c7, c10, 1 @ clean D entry @@ -240,7 +240,7 @@ ENTRY(arm946_dma_inv_range) * * (same as arm926) */ -ENTRY(arm946_dma_clean_range) +arm946_dma_clean_range: #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry @@ -275,6 +275,30 @@ ENTRY(arm946_dma_flush_range) mcr p15, 0, r0, 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(arm946_dma_map_area) + add r1, r1, r0 + cmp r2, #DMA_TO_DEVICE + beq arm946_dma_clean_range + bcs arm946_dma_inv_range + b arm946_dma_flush_range +ENDPROC(arm946_dma_map_area) + +/* + * dma_unmap_area(start, size, dir) + * - start - kernel virtual start address + * - size - size of region + * - dir - DMA direction + */ +ENTRY(arm946_dma_unmap_area) + mov pc, lr +ENDPROC(arm946_dma_unmap_area) + ENTRY(arm946_cache_fns) .long arm946_flush_kern_cache_all .long arm946_flush_user_cache_all @@ -282,8 +306,8 @@ ENTRY(arm946_cache_fns) .long arm946_coherent_kern_range .long arm946_coherent_user_range .long arm946_flush_kern_dcache_area - .long arm946_dma_inv_range - .long arm946_dma_clean_range + .long arm946_dma_map_area + .long arm946_dma_unmap_area .long arm946_dma_flush_range |