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-rw-r--r--arch/arm/mm/proc-mohawk.S32
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/arm/mm/proc-mohawk.S b/arch/arm/mm/proc-mohawk.S
index 9674d36cc97..caa31154e7d 100644
--- a/arch/arm/mm/proc-mohawk.S
+++ b/arch/arm/mm/proc-mohawk.S
@@ -218,7 +218,7 @@ ENTRY(mohawk_flush_kern_dcache_area)
*
* (same as v4wb)
*/
-ENTRY(mohawk_dma_inv_range)
+mohawk_dma_inv_range:
tst r0, #CACHE_DLINESIZE - 1
mcrne p15, 0, r0, c7, c10, 1 @ clean D entry
tst r1, #CACHE_DLINESIZE - 1
@@ -241,7 +241,7 @@ ENTRY(mohawk_dma_inv_range)
*
* (same as v4wb)
*/
-ENTRY(mohawk_dma_clean_range)
+mohawk_dma_clean_range:
bic r0, r0, #CACHE_DLINESIZE - 1
1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
add r0, r0, #CACHE_DLINESIZE
@@ -268,6 +268,30 @@ ENTRY(mohawk_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(mohawk_dma_map_area)
+ add r1, r1, r0
+ cmp r2, #DMA_TO_DEVICE
+ beq mohawk_dma_clean_range
+ bcs mohawk_dma_inv_range
+ b mohawk_dma_flush_range
+ENDPROC(mohawk_dma_map_area)
+
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(mohawk_dma_unmap_area)
+ mov pc, lr
+ENDPROC(mohawk_dma_unmap_area)
+
ENTRY(mohawk_cache_fns)
.long mohawk_flush_kern_cache_all
.long mohawk_flush_user_cache_all
@@ -275,8 +299,8 @@ ENTRY(mohawk_cache_fns)
.long mohawk_coherent_kern_range
.long mohawk_coherent_user_range
.long mohawk_flush_kern_dcache_area
- .long mohawk_dma_inv_range
- .long mohawk_dma_clean_range
+ .long mohawk_dma_map_area
+ .long mohawk_dma_unmap_area
.long mohawk_dma_flush_range
ENTRY(cpu_mohawk_dcache_clean_area)