[SCSI] lpfc 8.1.11 : Fix lpfc_multi_ring_support

It was not accounted for in the fast/slow rings.
Genericize the implementation and control it via sysfs

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 30 insertions, 5 deletions

diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 582f5ea4e84e..120af3db635a 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -1098,6 +1098,7 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
                                       (uint32_t *) &rspiocbq.iocb,
                                       sizeof (IOCB_t));
+                INIT_LIST_HEAD(&(rspiocbq.list));
                 irsp = &rspiocbq.iocb;
 
                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
@@ -1149,6 +1150,11 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
                                 }
                         }
                         break;
+                case LPFC_UNSOL_IOCB:
+                        spin_unlock_irqrestore(phba->host->host_lock, iflag);
+                        lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq);
+                        spin_lock_irqsave(phba->host->host_lock, iflag);
+                        break;
                 default:
                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
                                 char adaptermsg[LPFC_MAX_ADPTMSG];
@@ -2472,13 +2478,17 @@ lpfc_extra_ring_setup( struct lpfc_hba *phba)
         psli = &phba->sli;
 
         /* Adjust cmd/rsp ring iocb entries more evenly */
+
+        /* Take some away from the FCP ring */
         pring = &psli->ring[psli->fcp_ring];
         pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
         pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
         pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
         pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
 
-        pring = &psli->ring[1];
+        /* and give them to the extra ring */
+        pring = &psli->ring[psli->extra_ring];
+
         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
@@ -2488,8 +2498,8 @@ lpfc_extra_ring_setup( struct lpfc_hba *phba)
         pring->iotag_max = 4096;
         pring->num_mask = 1;
         pring->prt[0].profile = 0;      /* Mask 0 */
-        pring->prt[0].rctl = FC_UNSOL_DATA;
-        pring->prt[0].type = 5;
+        pring->prt[0].rctl = phba->cfg_multi_ring_rctl;
+        pring->prt[0].type = phba->cfg_multi_ring_type;
         pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
         return 0;
 }
@@ -2505,7 +2515,7 @@ lpfc_sli_setup(struct lpfc_hba *phba)
         psli->sli_flag = 0;
         psli->fcp_ring = LPFC_FCP_RING;
         psli->next_ring = LPFC_FCP_NEXT_RING;
-        psli->ip_ring = LPFC_IP_RING;
+        psli->extra_ring = LPFC_EXTRA_RING;
 
         psli->iocbq_lookup = NULL;
         psli->iocbq_lookup_len = 0;
@@ -2528,7 +2538,7 @@ lpfc_sli_setup(struct lpfc_hba *phba)
                         pring->fast_iotag = pring->iotag_max;
                         pring->num_mask = 0;
                         break;
-                case LPFC_IP_RING:      /* ring 1 - IP */
+                case LPFC_EXTRA_RING:   /* ring 1 - EXTRA */
                         /* numCiocb and numRiocb are used in config_port */
                         pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
                         pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
@@ -3238,6 +3248,21 @@ lpfc_intr_handler(int irq, void *dev_id)
                 lpfc_sli_handle_fast_ring_event(phba,
                                                 &phba->sli.ring[LPFC_FCP_RING],
                                                 status);
+
+        if (phba->cfg_multi_ring_support == 2) {
+                /*
+                 * Process all events on extra ring.  Take the optimized path
+                 * for extra ring IO.  Any other IO is slow path and is handled
+                 * by the worker thread.
+                 */
+                status = (ha_copy & (HA_RXMASK  << (4*LPFC_EXTRA_RING)));
+                status >>= (4*LPFC_EXTRA_RING);
+                if (status & HA_RXATT) {
+                        lpfc_sli_handle_fast_ring_event(phba,
+                                        &phba->sli.ring[LPFC_EXTRA_RING],
+                                        status);
+                }
+        }
         return IRQ_HANDLED;
 
 } /* lpfc_intr_handler */