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-rw-r--r--arch/arm/mm/cache-fa.S32
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/arm/mm/cache-fa.S b/arch/arm/mm/cache-fa.S
index a89444a..7148e53 100644
--- a/arch/arm/mm/cache-fa.S
+++ b/arch/arm/mm/cache-fa.S
@@ -157,7 +157,7 @@ ENTRY(fa_flush_kern_dcache_area)
* - start - virtual start address
* - end - virtual end address
*/
-ENTRY(fa_dma_inv_range)
+fa_dma_inv_range:
tst r0, #CACHE_DLINESIZE - 1
bic r0, r0, #CACHE_DLINESIZE - 1
mcrne p15, 0, r0, c7, c14, 1 @ clean & invalidate D entry
@@ -180,7 +180,7 @@ ENTRY(fa_dma_inv_range)
* - start - virtual start address
* - end - virtual end address
*/
-ENTRY(fa_dma_clean_range)
+fa_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
@@ -205,6 +205,30 @@ ENTRY(fa_dma_flush_range)
mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
mov pc, lr
+/*
+ * dma_map_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(fa_dma_map_area)
+ add r1, r1, r0
+ cmp r2, #DMA_TO_DEVICE
+ beq fa_dma_clean_range
+ bcs fa_dma_inv_range
+ b fa_dma_flush_range
+ENDPROC(fa_dma_map_area)
+
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(fa_dma_unmap_area)
+ mov pc, lr
+ENDPROC(fa_dma_unmap_area)
+
__INITDATA
.type fa_cache_fns, #object
@@ -215,7 +239,7 @@ ENTRY(fa_cache_fns)
.long fa_coherent_kern_range
.long fa_coherent_user_range
.long fa_flush_kern_dcache_area
- .long fa_dma_inv_range
- .long fa_dma_clean_range
+ .long fa_dma_map_area
+ .long fa_dma_unmap_area
.long fa_dma_flush_range
.size fa_cache_fns, . - fa_cache_fns
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