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Diffstat (limited to 'arch/arm/mm/proc-xsc3.S')
-rw-r--r--arch/arm/mm/proc-xsc3.S32
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S
index 8e4f6dca899..e5797f1c1db 100644
--- a/arch/arm/mm/proc-xsc3.S
+++ b/arch/arm/mm/proc-xsc3.S
@@ -257,7 +257,7 @@ ENTRY(xsc3_flush_kern_dcache_area)
* - start - virtual start address
* - end - virtual end address
*/
-ENTRY(xsc3_dma_inv_range)
+xsc3_dma_inv_range:
tst r0, #CACHELINESIZE - 1
bic r0, r0, #CACHELINESIZE - 1
mcrne p15, 0, r0, c7, c10, 1 @ clean L1 D line
@@ -278,7 +278,7 @@ ENTRY(xsc3_dma_inv_range)
* - start - virtual start address
* - end - virtual end address
*/
-ENTRY(xsc3_dma_clean_range)
+xsc3_dma_clean_range:
bic r0, r0, #CACHELINESIZE - 1
1: mcr p15, 0, r0, c7, c10, 1 @ clean L1 D line
add r0, r0, #CACHELINESIZE
@@ -304,6 +304,30 @@ ENTRY(xsc3_dma_flush_range)
mcr p15, 0, r0, c7, c10, 4 @ data write barrier
mov pc, lr
+/*
+ * dma_map_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(xsc3_dma_map_area)
+ add r1, r1, r0
+ cmp r2, #DMA_TO_DEVICE
+ beq xsc3_dma_clean_range
+ bcs xsc3_dma_inv_range
+ b xsc3_dma_flush_range
+ENDPROC(xsc3_dma_map_area)
+
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(xsc3_dma_unmap_area)
+ mov pc, lr
+ENDPROC(xsc3_dma_unmap_area)
+
ENTRY(xsc3_cache_fns)
.long xsc3_flush_kern_cache_all
.long xsc3_flush_user_cache_all
@@ -311,8 +335,8 @@ ENTRY(xsc3_cache_fns)
.long xsc3_coherent_kern_range
.long xsc3_coherent_user_range
.long xsc3_flush_kern_dcache_area
- .long xsc3_dma_inv_range
- .long xsc3_dma_clean_range
+ .long xsc3_dma_map_area
+ .long xsc3_dma_unmap_area
.long xsc3_dma_flush_range
ENTRY(cpu_xsc3_dcache_clean_area)