1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_dsd.h b/drivers/scsi/qla2xxx/qla_dsd.h
new file mode 100644
index 000000000000..7479924ba422
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_dsd.h
@@ -0,0 +1,30 @@
+#ifndef _QLA_DSD_H_
+#define _QLA_DSD_H_
+
+/* 32-bit data segment descriptor (8 bytes) */
+struct dsd32 {
+	__le32 address;
+	__le32 length;
+};
+
+static inline void append_dsd32(struct dsd32 **dsd, struct scatterlist *sg)
+{
+	put_unaligned_le32(sg_dma_address(sg), &(*dsd)->address);
+	put_unaligned_le32(sg_dma_len(sg),     &(*dsd)->length);
+	(*dsd)++;
+}
+
+/* 64-bit data segment descriptor (12 bytes) */
+struct dsd64 {
+	__le64 address;
+	__le32 length;
+} __packed;
+
+static inline void append_dsd64(struct dsd64 **dsd, struct scatterlist *sg)
+{
+	put_unaligned_le64(sg_dma_address(sg), &(*dsd)->address);
+	put_unaligned_le32(sg_dma_len(sg),     &(*dsd)->length);
+	(*dsd)++;
+}
+
+#endif