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Diffstat (limited to 'arch/arm/mm/proc-arm922.S')
-rw-r--r--arch/arm/mm/proc-arm922.S32
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/arm/mm/proc-arm922.S b/arch/arm/mm/proc-arm922.S
index ee111b00fa41..c0ff8e4b1074 100644
--- a/arch/arm/mm/proc-arm922.S
+++ b/arch/arm/mm/proc-arm922.S
@@ -241,7 +241,7 @@ ENTRY(arm922_flush_kern_dcache_area)
*
* (same as v4wb)
*/
-ENTRY(arm922_dma_inv_range)
+arm922_dma_inv_range:
tst r0, #CACHE_DLINESIZE - 1
bic r0, r0, #CACHE_DLINESIZE - 1
mcrne p15, 0, r0, c7, c10, 1 @ clean D entry
@@ -264,7 +264,7 @@ ENTRY(arm922_dma_inv_range)
*
* (same as v4wb)
*/
-ENTRY(arm922_dma_clean_range)
+arm922_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
@@ -290,6 +290,30 @@ ENTRY(arm922_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(arm922_dma_map_area)
+ add r1, r1, r0
+ cmp r2, #DMA_TO_DEVICE
+ beq arm922_dma_clean_range
+ bcs arm922_dma_inv_range
+ b arm922_dma_flush_range
+ENDPROC(arm922_dma_map_area)
+
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(arm922_dma_unmap_area)
+ mov pc, lr
+ENDPROC(arm922_dma_unmap_area)
+
ENTRY(arm922_cache_fns)
.long arm922_flush_kern_cache_all
.long arm922_flush_user_cache_all
@@ -297,8 +321,8 @@ ENTRY(arm922_cache_fns)
.long arm922_coherent_kern_range
.long arm922_coherent_user_range
.long arm922_flush_kern_dcache_area
- .long arm922_dma_inv_range
- .long arm922_dma_clean_range
+ .long arm922_dma_map_area
+ .long arm922_dma_unmap_area
.long arm922_dma_flush_range
#endif