[SCSI] lpfc 8.3.33: Parallelize SLI-4 Q distribution
Commonize SLI-3/4 Ring/Queue framework, to keep SLI-3 compatibility
Parallelize SLI-4 Q distribution - to use multiple posting/completion queues
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 9efe5f8..176302f 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -4551,6 +4551,13 @@
phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
}
+ if (!phba->sli.ring)
+ phba->sli.ring = (struct lpfc_sli_ring *)
+ kzalloc(LPFC_SLI3_MAX_RING *
+ sizeof(struct lpfc_sli_ring), GFP_KERNEL);
+ if (!phba->sli.ring)
+ return -ENOMEM;
+
/*
* Since the sg_tablesize is module parameter, the sg_dma_buf_size
* used to create the sg_dma_buf_pool must be dynamically calculated.
@@ -4710,6 +4717,16 @@
sges_per_segment = 2;
/*
+ * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands
+ * we will associate a new ring, for each FCP fastpath EQ/CQ/WQ tuple.
+ */
+ if (!phba->sli.ring)
+ phba->sli.ring = kzalloc(
+ (LPFC_SLI3_MAX_RING + phba->cfg_fcp_eq_count) *
+ sizeof(struct lpfc_sli_ring), GFP_KERNEL);
+ if (!phba->sli.ring)
+ return -ENOMEM;
+ /*
* Since the sg_tablesize is module parameter, the sg_dma_buf_size
* used to create the sg_dma_buf_pool must be dynamically calculated.
* 2 segments are added since the IOCB needs a command and response bde.
@@ -5555,6 +5572,10 @@
/* Release the driver assigned board number */
idr_remove(&lpfc_hba_index, phba->brd_no);
+ /* Free memory allocated with sli rings */
+ kfree(phba->sli.ring);
+ phba->sli.ring = NULL;
+
kfree(phba);
return;
}
@@ -6924,6 +6945,8 @@
int
lpfc_sli4_queue_setup(struct lpfc_hba *phba)
{
+ struct lpfc_sli *psli = &phba->sli;
+ struct lpfc_sli_ring *pring;
int rc = -ENOMEM;
int fcp_eqidx, fcp_cqidx, fcp_wqidx;
int fcp_cq_index = 0;
@@ -7107,6 +7130,12 @@
"rc = 0x%x\n", rc);
goto out_destroy_mbx_wq;
}
+
+ /* Bind this WQ to the ELS ring */
+ pring = &psli->ring[LPFC_ELS_RING];
+ pring->sli.sli4.wqp = (void *)phba->sli4_hba.els_wq;
+ phba->sli4_hba.els_cq->pring = pring;
+
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
phba->sli4_hba.els_wq->queue_id,
@@ -7137,6 +7166,12 @@
"WQ (%d), rc = 0x%x\n", fcp_wqidx, rc);
goto out_destroy_fcp_wq;
}
+
+ /* Bind this WQ to the next FCP ring */
+ pring = &psli->ring[MAX_SLI3_CONFIGURED_RINGS + fcp_wqidx];
+ pring->sli.sli4.wqp = (void *)phba->sli4_hba.fcp_wq[fcp_wqidx];
+ phba->sli4_hba.fcp_cq[fcp_cq_index]->pring = pring;
+
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"2591 FCP WQ setup: wq[%d]-id=%d, "
"parent cq[%d]-id=%d\n",