[PATCH 8/9] lpfc: Allow reduced polling rate for nvme_admin_async_event cmd completion

[James Smart <jsmart2021@gmail.com>]

NVME Asynchronous Event Request commands have no command timeout value per
specifications.

Set WQE option to allow a reduced FLUSH polling rate for I/O error
detection specifically for nvme_admin_async_event commands.

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>
---
 drivers/scsi/lpfc/lpfc_hw4.h  |  3 +++
 drivers/scsi/lpfc/lpfc_nvme.c | 11 +++++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
index 8511369d2cf8..f024415731ac 100644
--- a/drivers/scsi/lpfc/lpfc_hw4.h
+++ b/drivers/scsi/lpfc/lpfc_hw4.h
@@ -4487,6 +4487,9 @@ struct wqe_common {
 #define wqe_sup_SHIFT         6
 #define wqe_sup_MASK          0x00000001
 #define wqe_sup_WORD          word11
+#define wqe_ffrq_SHIFT         6
+#define wqe_ffrq_MASK          0x00000001
+#define wqe_ffrq_WORD          word11
 #define wqe_wqec_SHIFT        7
 #define wqe_wqec_MASK         0x00000001
 #define wqe_wqec_WORD         word11
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index 9cc22cefcb37..cd10ee6482fc 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -1207,7 +1207,8 @@ lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport,
 {
 	struct lpfc_hba *phba = vport->phba;
 	struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
-	struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq);
+	struct nvme_common_command *sqe;
+	struct lpfc_iocbq *pwqeq = &lpfc_ncmd->cur_iocbq;
 	union lpfc_wqe128 *wqe = &pwqeq->wqe;
 	uint32_t req_len;
 
@@ -1264,8 +1265,14 @@ lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport,
 		cstat->control_requests++;
 	}
 
-	if (pnode->nlp_nvme_info & NLP_NVME_NSLER)
+	if (pnode->nlp_nvme_info & NLP_NVME_NSLER) {
 		bf_set(wqe_erp, &wqe->generic.wqe_com, 1);
+		sqe = &((struct nvme_fc_cmd_iu *)
+			nCmd->cmdaddr)->sqe.common;
+		if (sqe->opcode == nvme_admin_async_event)
+			bf_set(wqe_ffrq, &wqe->generic.wqe_com, 1);
+	}
+
 	/*
 	 * Finish initializing those WQE fields that are independent
 	 * of the nvme_cmnd request_buffer
-- 
2.26.2