X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-frv%2Fscatterlist.h;h=4bca8a28546c2474e6300d041e117186175dc0ea;hb=551395ae667d699189014f762355e9131fc03e79;hp=2e7143b5a7ad2921109e4bbf1ec3a4ec2d8d1e76;hpb=434a25d422db13729da14637325875dc64c05faf;p=linux-2.6

diff --git a/include/asm-frv/scatterlist.h b/include/asm-frv/scatterlist.h
index 2e7143b5a7..4bca8a2854 100644
--- a/include/asm-frv/scatterlist.h
+++ b/include/asm-frv/scatterlist.h
@@ -31,6 +31,16 @@ 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 (0xffffffffUL)
 
 #endif /* !_ASM_SCATTERLIST_H */