[SCSI] bfa: Introduced generic address len pair to represent DMA memory chunk.
- Avoid the use of hardware defined structure bfi_sge_s for DMA
requests in host.
- Defined a generic address len pair to represent a DMA memory chunk
(bfi_alen_s).
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/bfa/bfi.h b/drivers/scsi/bfa/bfi.h
index 72b69a0..6ef1ba50 100644
--- a/drivers/scsi/bfa/bfi.h
+++ b/drivers/scsi/bfa/bfi.h
@@ -101,7 +101,7 @@
};
/*
- * Scatter Gather Element
+ * Scatter Gather Element used for fast-path IO requests
*/
struct bfi_sge_s {
#ifdef __BIG_ENDIAN
@@ -116,6 +116,14 @@
union bfi_addr_u sga;
};
+/**
+ * Generic DMA addr-len pair.
+ */
+struct bfi_alen_s {
+ union bfi_addr_u al_addr; /* DMA addr of buffer */
+ u32 al_len; /* length of buffer */
+};
+
/*
* Scatter Gather Page
*/
