[SCSI] lpfc 8.3.28: Add Loopback support for SLI4 adapters

- Add Basic support for SLI4 Loopback.
  (CR 124951, 125766, 124951, 125843, 125832, 125843)
- Added missing protection in setting/clearing of phba->link_flag bit
  field (CR 125994)
- Use link type and link number obtained from READ_CONFIG mailbox
  command. (CR 126264)

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
index 43c4c56..e5bfa7f 100644
--- a/drivers/scsi/lpfc/lpfc_hw4.h
+++ b/drivers/scsi/lpfc/lpfc_hw4.h
@@ -1351,11 +1351,11 @@
 		struct {
 			uint32_t word0;
 #define lpfc_mbx_set_diag_lpbk_type_SHIFT	0
-#define lpfc_mbx_set_diag_lpbk_type_MASK	0x00000001
+#define lpfc_mbx_set_diag_lpbk_type_MASK	0x00000003
 #define lpfc_mbx_set_diag_lpbk_type_WORD	word0
 #define LPFC_DIAG_LOOPBACK_TYPE_DISABLE		0x0
 #define LPFC_DIAG_LOOPBACK_TYPE_INTERNAL	0x1
-#define LPFC_DIAG_LOOPBACK_TYPE_EXTERNAL	0x2
+#define LPFC_DIAG_LOOPBACK_TYPE_SERDES		0x2
 #define lpfc_mbx_set_diag_lpbk_link_num_SHIFT	16
 #define lpfc_mbx_set_diag_lpbk_link_num_MASK	0x0000003F
 #define lpfc_mbx_set_diag_lpbk_link_num_WORD	word0
@@ -3324,6 +3324,9 @@
 #define wqe_la_SHIFT 3
 #define wqe_la_MASK  0x000000001
 #define wqe_la_WORD  word5
+#define wqe_xo_SHIFT	6
+#define wqe_xo_MASK	0x000000001
+#define wqe_xo_WORD	word5
 #define wqe_ls_SHIFT 7
 #define wqe_ls_MASK  0x000000001
 #define wqe_ls_WORD  word5