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Diffstat (limited to 'arch/arm/mm/proc-arm940.S')
-rw-r--r--arch/arm/mm/proc-arm940.S32
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/arm/mm/proc-arm940.S b/arch/arm/mm/proc-arm940.S
index 8196b9f401fb..1af1657819eb 100644
--- a/arch/arm/mm/proc-arm940.S
+++ b/arch/arm/mm/proc-arm940.S
@@ -171,7 +171,7 @@ ENTRY(arm940_flush_kern_dcache_area)
* - start - virtual start address
* - end - virtual end address
*/
-ENTRY(arm940_dma_inv_range)
+arm940_dma_inv_range:
mov ip, #0
mov r1, #(CACHE_DSEGMENTS - 1) << 4 @ 4 segments
1: orr r3, r1, #(CACHE_DENTRIES - 1) << 26 @ 64 entries
@@ -192,7 +192,7 @@ ENTRY(arm940_dma_inv_range)
* - start - virtual start address
* - end - virtual end address
*/
-ENTRY(arm940_dma_clean_range)
+arm940_dma_clean_range:
ENTRY(cpu_arm940_dcache_clean_area)
mov ip, #0
#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
@@ -233,6 +233,30 @@ ENTRY(arm940_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(arm940_dma_map_area)
+ add r1, r1, r0
+ cmp r2, #DMA_TO_DEVICE
+ beq arm940_dma_clean_range
+ bcs arm940_dma_inv_range
+ b arm940_dma_flush_range
+ENDPROC(arm940_dma_map_area)
+
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(arm940_dma_unmap_area)
+ mov pc, lr
+ENDPROC(arm940_dma_unmap_area)
+
ENTRY(arm940_cache_fns)
.long arm940_flush_kern_cache_all
.long arm940_flush_user_cache_all
@@ -240,8 +264,8 @@ ENTRY(arm940_cache_fns)
.long arm940_coherent_kern_range
.long arm940_coherent_user_range
.long arm940_flush_kern_dcache_area
- .long arm940_dma_inv_range
- .long arm940_dma_clean_range
+ .long arm940_dma_map_area
+ .long arm940_dma_unmap_area
.long arm940_dma_flush_range
__INIT