scsi: lpfc: SLI path split: Refactor fast and slow paths to native SLI4

Convert the SLI4 fast and slow paths to use native SLI4 wqe constructs
instead of iocb SLI3-isms.

Includes the following:

 - Create simple get_xxx and set_xxx routines to wrapper access to common
   elements in both SLI3 and SLI4 commands - allowing calling routines to
   avoid sli-rev-specific structures to access the elements.

 - using the wqe in the job structure as the primary element

 - use defines from SLI-4, not SLI-3

 - Removal of iocb to wqe conversion from fast and slow path

 - Add below routines to handle fast path
	lpfc_prep_embed_io - prepares the wqe for fast path
	lpfc_wqe_bpl2sgl   - manages bpl to sgl conversion
	lpfc_sli_wqe2iocb  - converts a WQE to IOCB for SLI-3 path

 - Add lpfc_sli3_iocb2wcqecmpl in completion path to convert an SLI-3
   iocb completion to wcqe completion

 - Refactor some of the code that works on both revs for clarity

Link: https://lore.kernel.org/r/20220225022308.16486-3-jsmart2021@gmail.com
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
index 6ec42991d2ab..32e6ed23f869 100644
--- a/drivers/scsi/lpfc/lpfc_hw4.h
+++ b/drivers/scsi/lpfc/lpfc_hw4.h
@@ -60,6 +60,13 @@
 	((ptr)->name##_WORD = ((((value) & name##_MASK) << name##_SHIFT) | \
 		 ((ptr)->name##_WORD & ~(name##_MASK << name##_SHIFT))))
 
+#define get_wqe_reqtag(x)	(((x)->wqe.words[9] >>  0) & 0xFFFF)
+
+#define get_job_ulpword(x, y)	((x)->iocb.un.ulpWord[y])
+
+#define set_job_ulpstatus(x, y)	bf_set(lpfc_wcqe_c_status, &(x)->wcqe_cmpl, y)
+#define set_job_ulpword4(x, y)	((&(x)->wcqe_cmpl)->parameter = y)
+
 struct dma_address {
 	uint32_t addr_lo;
 	uint32_t addr_hi;