[SCSI] bfa: Brocade-1860 Fabric Adapter vHBA support.

- Introduced partitioning of the BFA resources.
- Added h/w queue ID in CPE messages, firmware uses h/w queue ID
  from messages to pick a matching RME queue.
- Added message header to bfa_reqq_produce(). h/w queue ID is set
  in the message header and firmware modules use h/w queue ID from
  message header instead of from cpqe event.
- Made changes to allow using all 256 queues of Brocade-1860 asic.
  Previously only a single queue per queue group was used.
- Added function tag to BFI message header. Only used by FC BFI
  messages.  Used to translate host tag to firmware tag. bfa_lpuid()
  is changed to bfa_fn_lpu() that encodes both PCI function and port
  ID in BFI message header.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/scsi/bfa/bfi.h b/drivers/scsi/bfa/bfi.h
index 3fb2e8315323..40002f4ea008 100644
--- a/drivers/scsi/bfa/bfi.h
+++ b/drivers/scsi/bfa/bfi.h
@@ -38,18 +38,20 @@ struct bfi_mhdr_s {
 	union {
 		struct {
 			u8	qid;
-			u8	lpu_id;	/*  msg destination		    */
+			u8	fn_lpu;	/*  msg destination		    */
 		} h2i;
 		u16	i2htok;	/*  token in msgs to host	    */
 	} mtag;
 };
 
-#define bfi_mhdr_2_qid(_mh)	((_mh)->mtag.h2i.qid)
+#define bfi_fn_lpu(__fn, __lpu)	((__fn) << 1 | (__lpu))
+#define bfi_mhdr_2_fn(_mh)	((_mh)->mtag.h2i.fn_lpu >> 1)
+#define bfi_mhdr_2_qid(_m)	((_mh)->mtag.h2i.qid)
 
-#define bfi_h2i_set(_mh, _mc, _op, _lpuid) do {		\
+#define bfi_h2i_set(_mh, _mc, _op, _fn_lpu) do {		\
 	(_mh).msg_class		= (_mc);      \
 	(_mh).msg_id		= (_op);      \
-	(_mh).mtag.h2i.lpu_id	= (_lpuid);      \
+	(_mh).mtag.h2i.fn_lpu	= (_fn_lpu);      \
 } while (0)
 
 #define bfi_i2h_set(_mh, _mc, _op, _i2htok) do {		\