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, 36 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index 50aed4901ed8..fa0ef4feade6 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -1797,3 +1797,39 @@ static inline int lpfc_is_vmid_enabled(struct lpfc_hba *phba)
 {
 	return phba->cfg_vmid_app_header || phba->cfg_vmid_priority_tagging;
 }
+
+static inline
+u8 get_job_ulpstatus(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+{
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		return bf_get(lpfc_wcqe_c_status, &iocbq->wcqe_cmpl);
+	else
+		return iocbq->iocb.ulpStatus;
+}
+
+static inline
+u32 get_job_word4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+{
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		return iocbq->wcqe_cmpl.parameter;
+	else
+		return iocbq->iocb.un.ulpWord[4];
+}
+
+static inline
+u8 get_job_cmnd(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+{
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		return bf_get(wqe_cmnd, &iocbq->wqe.generic.wqe_com);
+	else
+		return iocbq->iocb.ulpCommand;
+}
+
+static inline
+u16 get_job_ulpcontext(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+{
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		return bf_get(wqe_ctxt_tag, &iocbq->wqe.generic.wqe_com);
+	else
+		return iocbq->iocb.ulpContext;
+}