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Diffstat (limited to 'arch/arm/mm/cache-v7.S')
-rw-r--r--arch/arm/mm/cache-v7.S34
1 files changed, 30 insertions, 4 deletions
diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S
index 9073db849fb..bcd64f26587 100644
--- a/arch/arm/mm/cache-v7.S
+++ b/arch/arm/mm/cache-v7.S
@@ -216,7 +216,7 @@ ENDPROC(v7_flush_kern_dcache_area)
* - start - virtual start address of region
* - end - virtual end address of region
*/
-ENTRY(v7_dma_inv_range)
+v7_dma_inv_range:
dcache_line_size r2, r3
sub r3, r2, #1
tst r0, r3
@@ -240,7 +240,7 @@ ENDPROC(v7_dma_inv_range)
* - start - virtual start address of region
* - end - virtual end address of region
*/
-ENTRY(v7_dma_clean_range)
+v7_dma_clean_range:
dcache_line_size r2, r3
sub r3, r2, #1
bic r0, r0, r3
@@ -271,6 +271,32 @@ ENTRY(v7_dma_flush_range)
mov pc, lr
ENDPROC(v7_dma_flush_range)
+/*
+ * dma_map_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(v7_dma_map_area)
+ add r1, r1, r0
+ teq r2, #DMA_FROM_DEVICE
+ beq v7_dma_inv_range
+ b v7_dma_clean_range
+ENDPROC(v7_dma_map_area)
+
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(v7_dma_unmap_area)
+ add r1, r1, r0
+ teq r2, #DMA_TO_DEVICE
+ bne v7_dma_inv_range
+ mov pc, lr
+ENDPROC(v7_dma_unmap_area)
+
__INITDATA
.type v7_cache_fns, #object
@@ -281,7 +307,7 @@ ENTRY(v7_cache_fns)
.long v7_coherent_kern_range
.long v7_coherent_user_range
.long v7_flush_kern_dcache_area
- .long v7_dma_inv_range
- .long v7_dma_clean_range
+ .long v7_dma_map_area
+ .long v7_dma_unmap_area
.long v7_dma_flush_range
.size v7_cache_fns, . - v7_cache_fns