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scsi: lpfc: Rework sli4 doorbell infrastructure

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Up until now, all SLI-4 devices had the same doorbells at the same
bar locations. With newer hardware, there are now independent EQ and
CQ doorbells and the bar locations differ.

Prepare the code for new hardware by separating the eq/cq doorbell into
separate components. The components can be set based on if_type.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart
2018-02-22 08:18:41 -08:00
committed by Martin K. Petersen
parent b71413dd01
commit 9dd35425a5
5 changed files with 32 additions and 19 deletions
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8
drivers/scsi/lpfc/lpfc_sli.c
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@@ -310,7 +310,7 @@ lpfc_sli4_eq_clr_intr(struct lpfc_queue *q)
bf_set(lpfc_eqcq_doorbell_eqid_hi, &doorbell,
(q->queue_id >> LPFC_EQID_HI_FIELD_SHIFT));
bf_set(lpfc_eqcq_doorbell_eqid_lo, &doorbell, q->queue_id);
writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr);
writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
}
/**
@@ -360,10 +360,10 @@ lpfc_sli4_eq_release(struct lpfc_queue *q, bool arm)
bf_set(lpfc_eqcq_doorbell_eqid_hi, &doorbell,
(q->queue_id >> LPFC_EQID_HI_FIELD_SHIFT));
bf_set(lpfc_eqcq_doorbell_eqid_lo, &doorbell, q->queue_id);
writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr);
writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
/* PCI read to flush PCI pipeline on re-arming for INTx mode */
if ((q->phba->intr_type == INTx) && (arm == LPFC_QUEUE_REARM))
readl(q->phba->sli4_hba.EQCQDBregaddr);
readl(q->phba->sli4_hba.EQDBregaddr);
return released;
}
@@ -453,7 +453,7 @@ lpfc_sli4_cq_release(struct lpfc_queue *q, bool arm)
bf_set(lpfc_eqcq_doorbell_cqid_hi, &doorbell,
(q->queue_id >> LPFC_CQID_HI_FIELD_SHIFT));
bf_set(lpfc_eqcq_doorbell_cqid_lo, &doorbell, q->queue_id);
writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr);
writel(doorbell.word0, q->phba->sli4_hba.CQDBregaddr);
return released;
}