1 files changed, 9 insertions, 0 deletions

diff --git a/include/asm-sh64/scatterlist.h b/include/asm-sh64/scatterlist.h
index 5109251970e7..7f729bbfce43 100644
--- a/include/asm-sh64/scatterlist.h
+++ b/include/asm-sh64/scatterlist.h
@@ -23,6 +23,15 @@ struct scatterlist {
     unsigned int length;
 };
 
+/* These macros should be used after a pci_map_sg call has been done
+ * to get bus addresses of each of the SG entries and their lengths.
+ * You should only work with the number of sg entries pci_map_sg
+ * returns, or alternatively stop on the first sg_dma_len(sg) which
+ * is 0.
+ */
+#define sg_dma_address(sg)      ((sg)->dma_address)
+#define sg_dma_len(sg)          ((sg)->length)
+
 #define ISA_DMA_THRESHOLD (0xffffffff)
 
 #endif /* !__ASM_SH64_SCATTERLIST_H */