1 files changed, 15 insertions, 0 deletions

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index df3a3610caf0..332030709623 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -75,6 +75,21 @@ static inline unsigned int dma_set_max_seg_size(struct device *dev,
                 return -EIO;
 }
 
+static inline unsigned long dma_get_seg_boundary(struct device *dev)
+{
+        return dev->dma_parms ?
+                dev->dma_parms->segment_boundary_mask : 0xffffffff;
+}
+
+static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
+{
+        if (dev->dma_parms) {
+                dev->dma_parms->segment_boundary_mask = mask;
+                return 0;
+        } else
+                return -EIO;
+}
+
 /* flags for the coherent memory api */
 #define DMA_MEMORY_MAP                  0x01
 #define DMA_MEMORY_IO                   0x02