Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into for-rmk

1 files changed, 27 insertions, 0 deletions

diff --git a/arch/arm/include/asm/scatterlist.h b/arch/arm/include/asm/scatterlist.h
new file mode 100644
index 00000000000..ca0a37d0340
--- /dev/null
+++ b/arch/arm/include/asm/scatterlist.h
@@ -0,0 +1,27 @@
+#ifndef _ASMARM_SCATTERLIST_H
+#define _ASMARM_SCATTERLIST_H
+
+#include <asm/memory.h>
+#include <asm/types.h>
+
+struct scatterlist {
+#ifdef CONFIG_DEBUG_SG
+	unsigned long	sg_magic;
+#endif
+	unsigned long	page_link;
+	unsigned int	offset;		/* buffer offset		 */
+	dma_addr_t	dma_address;	/* dma address			 */
+	unsigned int	length;		/* 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)
+
+#endif /* _ASMARM_SCATTERLIST_H */