Merge branch 'for-next' into for-linus
[safe/jmp/linux-2.6] / drivers / scsi / lpfc / lpfc_scsi.c
index 1a7659c..483fb74 100644 (file)
@@ -56,27 +56,29 @@ static char *dif_op_str[] = {
        "SCSI_PROT_WRITE_INSERT",
        "SCSI_PROT_READ_PASS",
        "SCSI_PROT_WRITE_PASS",
-       "SCSI_PROT_READ_CONVERT",
-       "SCSI_PROT_WRITE_CONVERT"
 };
 static void
 lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
+static void
+lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
 
 static void
-lpfc_debug_save_data(struct scsi_cmnd *cmnd)
+lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
 {
        void *src, *dst;
        struct scatterlist *sgde = scsi_sglist(cmnd);
 
        if (!_dump_buf_data) {
-               printk(KERN_ERR "BLKGRD ERROR %s _dump_buf_data is NULL\n",
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                       "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
                                __func__);
                return;
        }
 
 
        if (!sgde) {
-               printk(KERN_ERR "BLKGRD ERROR: data scatterlist is null\n");
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                       "9051 BLKGRD: ERROR: data scatterlist is null\n");
                return;
        }
 
@@ -90,19 +92,21 @@ lpfc_debug_save_data(struct scsi_cmnd *cmnd)
 }
 
 static void
-lpfc_debug_save_dif(struct scsi_cmnd *cmnd)
+lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
 {
        void *src, *dst;
        struct scatterlist *sgde = scsi_prot_sglist(cmnd);
 
        if (!_dump_buf_dif) {
-               printk(KERN_ERR "BLKGRD ERROR %s _dump_buf_data is NULL\n",
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                       "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
                                __func__);
                return;
        }
 
        if (!sgde) {
-               printk(KERN_ERR "BLKGRD ERROR: prot scatterlist is null\n");
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                       "9053 BLKGRD: ERROR: prot scatterlist is null\n");
                return;
        }
 
@@ -116,6 +120,27 @@ lpfc_debug_save_dif(struct scsi_cmnd *cmnd)
 }
 
 /**
+ * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge.
+ * @phba: Pointer to HBA object.
+ * @lpfc_cmd: lpfc scsi command object pointer.
+ *
+ * This function is called from the lpfc_prep_task_mgmt_cmd function to
+ * set the last bit in the response sge entry.
+ **/
+static void
+lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba,
+                               struct lpfc_scsi_buf *lpfc_cmd)
+{
+       struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
+       if (sgl) {
+               sgl += 1;
+               sgl->word2 = le32_to_cpu(sgl->word2);
+               bf_set(lpfc_sli4_sge_last, sgl, 1);
+               sgl->word2 = cpu_to_le32(sgl->word2);
+       }
+}
+
+/**
  * lpfc_update_stats - Update statistical data for the command completion
  * @phba: Pointer to HBA object.
  * @lpfc_cmd: lpfc scsi command object pointer.
@@ -223,6 +248,36 @@ lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba,
 }
 
 /**
+ * lpfc_change_queue_depth - Alter scsi device queue depth
+ * @sdev: Pointer the scsi device on which to change the queue depth.
+ * @qdepth: New queue depth to set the sdev to.
+ * @reason: The reason for the queue depth change.
+ *
+ * This function is called by the midlayer and the LLD to alter the queue
+ * depth for a scsi device. This function sets the queue depth to the new
+ * value and sends an event out to log the queue depth change.
+ **/
+int
+lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason)
+{
+       struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
+       struct lpfc_hba   *phba = vport->phba;
+       struct lpfc_rport_data *rdata;
+       unsigned long new_queue_depth, old_queue_depth;
+
+       old_queue_depth = sdev->queue_depth;
+       scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
+       new_queue_depth = sdev->queue_depth;
+       rdata = sdev->hostdata;
+       if (rdata)
+               lpfc_send_sdev_queuedepth_change_event(phba, vport,
+                                                      rdata->pnode, sdev->lun,
+                                                      old_queue_depth,
+                                                      new_queue_depth);
+       return sdev->queue_depth;
+}
+
+/**
  * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
  * @phba: The Hba for which this call is being executed.
  *
@@ -286,8 +341,10 @@ lpfc_rampup_queue_depth(struct lpfc_vport  *vport,
        if (vport->cfg_lun_queue_depth <= queue_depth)
                return;
        spin_lock_irqsave(&phba->hbalock, flags);
-       if (((phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) > jiffies) ||
-        ((phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL ) > jiffies)) {
+       if (time_before(jiffies,
+                       phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) ||
+           time_before(jiffies,
+                       phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL)) {
                spin_unlock_irqrestore(&phba->hbalock, flags);
                return;
        }
@@ -319,17 +376,16 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
        struct lpfc_vport **vports;
        struct Scsi_Host  *shost;
        struct scsi_device *sdev;
-       unsigned long new_queue_depth, old_queue_depth;
+       unsigned long new_queue_depth;
        unsigned long num_rsrc_err, num_cmd_success;
        int i;
-       struct lpfc_rport_data *rdata;
 
        num_rsrc_err = atomic_read(&phba->num_rsrc_err);
        num_cmd_success = atomic_read(&phba->num_cmd_success);
 
        vports = lpfc_create_vport_work_array(phba);
        if (vports != NULL)
-               for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+               for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
                        shost = lpfc_shost_from_vport(vports[i]);
                        shost_for_each_device(sdev, shost) {
                                new_queue_depth =
@@ -340,22 +396,8 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
                                else
                                        new_queue_depth = sdev->queue_depth -
                                                                new_queue_depth;
-                               old_queue_depth = sdev->queue_depth;
-                               if (sdev->ordered_tags)
-                                       scsi_adjust_queue_depth(sdev,
-                                                       MSG_ORDERED_TAG,
-                                                       new_queue_depth);
-                               else
-                                       scsi_adjust_queue_depth(sdev,
-                                                       MSG_SIMPLE_TAG,
-                                                       new_queue_depth);
-                               rdata = sdev->hostdata;
-                               if (rdata)
-                                       lpfc_send_sdev_queuedepth_change_event(
-                                               phba, vports[i],
-                                               rdata->pnode,
-                                               sdev->lun, old_queue_depth,
-                                               new_queue_depth);
+                               lpfc_change_queue_depth(sdev, new_queue_depth,
+                                                       SCSI_QDEPTH_DEFAULT);
                        }
                }
        lpfc_destroy_vport_work_array(phba, vports);
@@ -379,32 +421,18 @@ lpfc_ramp_up_queue_handler(struct lpfc_hba *phba)
        struct Scsi_Host  *shost;
        struct scsi_device *sdev;
        int i;
-       struct lpfc_rport_data *rdata;
 
        vports = lpfc_create_vport_work_array(phba);
        if (vports != NULL)
-               for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+               for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
                        shost = lpfc_shost_from_vport(vports[i]);
                        shost_for_each_device(sdev, shost) {
                                if (vports[i]->cfg_lun_queue_depth <=
                                    sdev->queue_depth)
                                        continue;
-                               if (sdev->ordered_tags)
-                                       scsi_adjust_queue_depth(sdev,
-                                                       MSG_ORDERED_TAG,
-                                                       sdev->queue_depth+1);
-                               else
-                                       scsi_adjust_queue_depth(sdev,
-                                                       MSG_SIMPLE_TAG,
-                                                       sdev->queue_depth+1);
-                               rdata = sdev->hostdata;
-                               if (rdata)
-                                       lpfc_send_sdev_queuedepth_change_event(
-                                               phba, vports[i],
-                                               rdata->pnode,
-                                               sdev->lun,
-                                               sdev->queue_depth - 1,
-                                               sdev->queue_depth);
+                               lpfc_change_queue_depth(sdev,
+                                                       sdev->queue_depth+1,
+                                                       SCSI_QDEPTH_RAMP_UP);
                        }
                }
        lpfc_destroy_vport_work_array(phba, vports);
@@ -431,7 +459,7 @@ lpfc_scsi_dev_block(struct lpfc_hba *phba)
 
        vports = lpfc_create_vport_work_array(phba);
        if (vports != NULL)
-               for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+               for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
                        shost = lpfc_shost_from_vport(vports[i]);
                        shost_for_each_device(sdev, shost) {
                                rport = starget_to_rport(scsi_target(sdev));
@@ -570,7 +598,7 @@ lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc)
                iocb->ulpClass = CLASS3;
                psb->status = IOSTAT_SUCCESS;
                /* Put it back into the SCSI buffer list */
-               lpfc_release_scsi_buf_s4(phba, psb);
+               lpfc_release_scsi_buf_s3(phba, psb);
 
        }
 
@@ -598,6 +626,7 @@ lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba,
                &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
                if (psb->cur_iocbq.sli4_xritag == xri) {
                        list_del(&psb->list);
+                       psb->exch_busy = 0;
                        psb->status = IOSTAT_SUCCESS;
                        spin_unlock_irqrestore(
                                &phba->sli4_hba.abts_scsi_buf_list_lock,
@@ -660,11 +689,12 @@ lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba)
                                         list);
                        if (status) {
                                /* Put this back on the abort scsi list */
-                               psb->status = IOSTAT_LOCAL_REJECT;
-                               psb->result = IOERR_ABORT_REQUESTED;
+                               psb->exch_busy = 1;
                                rc++;
-                       } else
+                       } else {
+                               psb->exch_busy = 0;
                                psb->status = IOSTAT_SUCCESS;
+                       }
                        /* Put it back into the SCSI buffer list */
                        lpfc_release_scsi_buf_s4(phba, psb);
                }
@@ -768,19 +798,17 @@ lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc)
                 */
                sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd));
                sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd));
-               bf_set(lpfc_sli4_sge_len, sgl, sizeof(struct fcp_cmnd));
                bf_set(lpfc_sli4_sge_last, sgl, 0);
                sgl->word2 = cpu_to_le32(sgl->word2);
-               sgl->word3 = cpu_to_le32(sgl->word3);
+               sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd));
                sgl++;
 
                /* Setup the physical region for the FCP RSP */
                sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp));
                sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp));
-               bf_set(lpfc_sli4_sge_len, sgl, sizeof(struct fcp_rsp));
                bf_set(lpfc_sli4_sge_last, sgl, 1);
                sgl->word2 = cpu_to_le32(sgl->word2);
-               sgl->word3 = cpu_to_le32(sgl->word3);
+               sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp));
 
                /*
                 * Since the IOCB for the FCP I/O is built into this
@@ -811,11 +839,12 @@ lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc)
                                                psb->cur_iocbq.sli4_xritag);
                        if (status) {
                                /* Put this back on the abort scsi list */
-                               psb->status = IOSTAT_LOCAL_REJECT;
-                               psb->result = IOERR_ABORT_REQUESTED;
+                               psb->exch_busy = 1;
                                rc++;
-                       } else
+                       } else {
+                               psb->exch_busy = 0;
                                psb->status = IOSTAT_SUCCESS;
+                       }
                        /* Put it back into the SCSI buffer list */
                        lpfc_release_scsi_buf_s4(phba, psb);
                        break;
@@ -829,11 +858,12 @@ lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc)
                                 list);
                        if (status) {
                                /* Put this back on the abort scsi list */
-                               psb->status = IOSTAT_LOCAL_REJECT;
-                               psb->result = IOERR_ABORT_REQUESTED;
+                               psb->exch_busy = 1;
                                rc++;
-                       } else
+                       } else {
+                               psb->exch_busy = 0;
                                psb->status = IOSTAT_SUCCESS;
+                       }
                        /* Put it back into the SCSI buffer list */
                        lpfc_release_scsi_buf_s4(phba, psb);
                }
@@ -923,8 +953,7 @@ lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
 {
        unsigned long iflag = 0;
 
-       if (psb->status == IOSTAT_LOCAL_REJECT
-               && psb->result == IOERR_ABORT_REQUESTED) {
+       if (psb->exch_busy) {
                spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock,
                                        iflag);
                psb->pCmd = NULL;
@@ -1005,7 +1034,8 @@ lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
 
                lpfc_cmd->seg_cnt = nseg;
                if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
-                       printk(KERN_ERR "%s: Too many sg segments from "
+                       lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                               "9064 BLKGRD: %s: Too many sg segments from "
                               "dma_map_sg.  Config %d, seg_cnt %d\n",
                               __func__, phba->cfg_sg_seg_cnt,
                               lpfc_cmd->seg_cnt);
@@ -1093,7 +1123,7 @@ lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
  * with the cmd
  */
 static int
-lpfc_sc_to_sli_prof(struct scsi_cmnd *sc)
+lpfc_sc_to_sli_prof(struct lpfc_hba *phba, struct scsi_cmnd *sc)
 {
        uint8_t guard_type = scsi_host_get_guard(sc->device->host);
        uint8_t ret_prof = LPFC_PROF_INVALID;
@@ -1110,16 +1140,15 @@ lpfc_sc_to_sli_prof(struct scsi_cmnd *sc)
                        ret_prof = LPFC_PROF_A1;
                        break;
 
-               case SCSI_PROT_READ_CONVERT:
-               case SCSI_PROT_WRITE_CONVERT:
+               case SCSI_PROT_READ_PASS:
+               case SCSI_PROT_WRITE_PASS:
                        ret_prof = LPFC_PROF_AST1;
                        break;
 
-               case SCSI_PROT_READ_PASS:
-               case SCSI_PROT_WRITE_PASS:
                case SCSI_PROT_NORMAL:
                default:
-                       printk(KERN_ERR "Bad op/guard:%d/%d combination\n",
+                       lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                               "9063 BLKGRD:Bad op/guard:%d/%d combination\n",
                                        scsi_get_prot_op(sc), guard_type);
                        break;
 
@@ -1136,13 +1165,12 @@ lpfc_sc_to_sli_prof(struct scsi_cmnd *sc)
                        ret_prof = LPFC_PROF_C1;
                        break;
 
-               case SCSI_PROT_READ_CONVERT:
-               case SCSI_PROT_WRITE_CONVERT:
                case SCSI_PROT_READ_INSERT:
                case SCSI_PROT_WRITE_STRIP:
                case SCSI_PROT_NORMAL:
                default:
-                       printk(KERN_ERR "Bad op/guard:%d/%d combination\n",
+                       lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                               "9075 BLKGRD: Bad op/guard:%d/%d combination\n",
                                        scsi_get_prot_op(sc), guard_type);
                        break;
                }
@@ -1174,8 +1202,8 @@ lpfc_cmd_blksize(struct scsi_cmnd *sc)
  * @reftag:         out: ref tag (reference tag)
  *
  * Description:
- *   Extract DIF paramters from the command if possible.  Otherwise,
- *   use default paratmers.
+ *   Extract DIF parameters from the command if possible.  Otherwise,
+ *   use default parameters.
  *
  **/
 static inline void
@@ -1188,8 +1216,7 @@ lpfc_get_cmd_dif_parms(struct scsi_cmnd *sc, uint16_t *apptagmask,
        static int cnt;
 
        if (protcnt && (op == SCSI_PROT_WRITE_STRIP ||
-                               op == SCSI_PROT_WRITE_PASS ||
-                               op == SCSI_PROT_WRITE_CONVERT)) {
+                               op == SCSI_PROT_WRITE_PASS)) {
 
                cnt++;
                spt = page_address(sg_page(scsi_prot_sglist(sc))) +
@@ -1245,7 +1272,7 @@ lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
        uint16_t apptagmask, apptagval;
 
        pde1 = (struct lpfc_pde *) bpl;
-       prof = lpfc_sc_to_sli_prof(sc);
+       prof = lpfc_sc_to_sli_prof(phba, sc);
 
        if (prof == LPFC_PROF_INVALID)
                goto out;
@@ -1345,7 +1372,7 @@ lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
                return 0;
        }
 
-       prof = lpfc_sc_to_sli_prof(sc);
+       prof = lpfc_sc_to_sli_prof(phba, sc);
        if (prof == LPFC_PROF_INVALID)
                goto out;
 
@@ -1394,7 +1421,8 @@ lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
                subtotal = 0; /* total bytes processed for current prot grp */
                while (!pgdone) {
                        if (!sgde) {
-                               printk(KERN_ERR "%s Invalid data segment\n",
+                               lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                                       "9065 BLKGRD:%s Invalid data segment\n",
                                                __func__);
                                return 0;
                        }
@@ -1448,7 +1476,8 @@ lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
                        reftag += protgrp_blks;
                } else {
                        /* if we're here, we have a bug */
-                       printk(KERN_ERR "BLKGRD: bug in %s\n", __func__);
+                       lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                               "9054 BLKGRD: bug in %s\n", __func__);
                }
 
        } while (!alldone);
@@ -1480,8 +1509,6 @@ lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc)
        case SCSI_PROT_WRITE_STRIP:
        case SCSI_PROT_READ_PASS:
        case SCSI_PROT_WRITE_PASS:
-       case SCSI_PROT_WRITE_CONVERT:
-       case SCSI_PROT_READ_CONVERT:
                ret = LPFC_PG_TYPE_DIF_BUF;
                break;
        default:
@@ -1532,8 +1559,10 @@ lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba,
 
                lpfc_cmd->seg_cnt = datasegcnt;
                if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
-                       printk(KERN_ERR "%s: Too many sg segments from "
-                                       "dma_map_sg.  Config %d, seg_cnt %d\n",
+                       lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                                       "9067 BLKGRD: %s: Too many sg segments"
+                                       " from dma_map_sg.  Config %d, seg_cnt"
+                                       " %d\n",
                                        __func__, phba->cfg_sg_seg_cnt,
                                        lpfc_cmd->seg_cnt);
                        scsi_dma_unmap(scsi_cmnd);
@@ -1546,7 +1575,7 @@ lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba,
                case LPFC_PG_TYPE_NO_DIF:
                        num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl,
                                        datasegcnt);
-                       /* we shoud have 2 or more entries in buffer list */
+                       /* we should have 2 or more entries in buffer list */
                        if (num_bde < 2)
                                goto err;
                        break;
@@ -1567,8 +1596,9 @@ lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba,
                        lpfc_cmd->prot_seg_cnt = protsegcnt;
                        if (lpfc_cmd->prot_seg_cnt
                            > phba->cfg_prot_sg_seg_cnt) {
-                               printk(KERN_ERR "%s: Too many prot sg segments "
-                                               "from dma_map_sg.  Config %d,"
+                               lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                                       "9068 BLKGRD: %s: Too many prot sg "
+                                       "segments from dma_map_sg.  Config %d,"
                                                "prot_seg_cnt %d\n", __func__,
                                                phba->cfg_prot_sg_seg_cnt,
                                                lpfc_cmd->prot_seg_cnt);
@@ -1582,7 +1612,7 @@ lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba,
 
                        num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl,
                                        datasegcnt, protsegcnt);
-                       /* we shoud have 3 or more entries in buffer list */
+                       /* we should have 3 or more entries in buffer list */
                        if (num_bde < 3)
                                goto err;
                        break;
@@ -1659,23 +1689,26 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd,
        uint32_t bgstat = bgf->bgstat;
        uint64_t failing_sector = 0;
 
-       printk(KERN_ERR "BG ERROR in cmd 0x%x lba 0x%llx blk cnt 0x%lx "
+       lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9069 BLKGRD: BG ERROR in cmd"
+                       " 0x%x lba 0x%llx blk cnt 0x%x "
                        "bgstat=0x%x bghm=0x%x\n",
                        cmd->cmnd[0], (unsigned long long)scsi_get_lba(cmd),
-                       cmd->request->nr_sectors, bgstat, bghm);
+                       blk_rq_sectors(cmd->request), bgstat, bghm);
 
        spin_lock(&_dump_buf_lock);
        if (!_dump_buf_done) {
-               printk(KERN_ERR "Saving Data for %u blocks to debugfs\n",
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG,  "9070 BLKGRD: Saving"
+                       " Data for %u blocks to debugfs\n",
                                (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
-               lpfc_debug_save_data(cmd);
+               lpfc_debug_save_data(phba, cmd);
 
                /* If we have a prot sgl, save the DIF buffer */
                if (lpfc_prot_group_type(phba, cmd) ==
                                LPFC_PG_TYPE_DIF_BUF) {
-                       printk(KERN_ERR "Saving DIF for %u blocks to debugfs\n",
-                                       (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
-                       lpfc_debug_save_dif(cmd);
+                       lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: "
+                               "Saving DIF for %u blocks to debugfs\n",
+                               (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
+                       lpfc_debug_save_dif(phba, cmd);
                }
 
                _dump_buf_done = 1;
@@ -1684,15 +1717,17 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd,
 
        if (lpfc_bgs_get_invalid_prof(bgstat)) {
                cmd->result = ScsiResult(DID_ERROR, 0);
-               printk(KERN_ERR "Invalid BlockGuard profile. bgstat:0x%x\n",
-                               bgstat);
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9072 BLKGRD: Invalid"
+                       " BlockGuard profile. bgstat:0x%x\n",
+                       bgstat);
                ret = (-1);
                goto out;
        }
 
        if (lpfc_bgs_get_uninit_dif_block(bgstat)) {
                cmd->result = ScsiResult(DID_ERROR, 0);
-               printk(KERN_ERR "Invalid BlockGuard DIF Block. bgstat:0x%x\n",
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9073 BLKGRD: "
+                               "Invalid BlockGuard DIF Block. bgstat:0x%x\n",
                                bgstat);
                ret = (-1);
                goto out;
@@ -1706,7 +1741,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd,
                cmd->result = DRIVER_SENSE << 24
                        | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
                phba->bg_guard_err_cnt++;
-               printk(KERN_ERR "BLKGRD: guard_tag error\n");
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                       "9055 BLKGRD: guard_tag error\n");
        }
 
        if (lpfc_bgs_get_reftag_err(bgstat)) {
@@ -1718,7 +1754,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd,
                        | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
 
                phba->bg_reftag_err_cnt++;
-               printk(KERN_ERR "BLKGRD: ref_tag error\n");
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                       "9056 BLKGRD: ref_tag error\n");
        }
 
        if (lpfc_bgs_get_apptag_err(bgstat)) {
@@ -1730,7 +1767,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd,
                        | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
 
                phba->bg_apptag_err_cnt++;
-               printk(KERN_ERR "BLKGRD: app_tag error\n");
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                       "9061 BLKGRD: app_tag error\n");
        }
 
        if (lpfc_bgs_get_hi_water_mark_present(bgstat)) {
@@ -1751,7 +1789,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd,
        if (!ret) {
                /* No error was reported - problem in FW? */
                cmd->result = ScsiResult(DID_ERROR, 0);
-               printk(KERN_ERR "BLKGRD: no errors reported!\n");
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                       "9057 BLKGRD: no errors reported!\n");
        }
 
 out:
@@ -1810,9 +1849,10 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
 
                lpfc_cmd->seg_cnt = nseg;
                if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
-                       printk(KERN_ERR "%s: Too many sg segments from "
-                              "dma_map_sg.  Config %d, seg_cnt %d\n",
-                              __func__, phba->cfg_sg_seg_cnt,
+                       lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:"
+                               " %s: Too many sg segments from "
+                               "dma_map_sg.  Config %d, seg_cnt %d\n",
+                               __func__, phba->cfg_sg_seg_cnt,
                               lpfc_cmd->seg_cnt);
                        scsi_dma_unmap(scsi_cmnd);
                        return 1;
@@ -1830,7 +1870,6 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
                scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
                        physaddr = sg_dma_address(sgel);
                        dma_len = sg_dma_len(sgel);
-                       bf_set(lpfc_sli4_sge_len, sgl, sg_dma_len(sgel));
                        sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
                        sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
                        if ((num_bde + 1) == nseg)
@@ -1839,7 +1878,7 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
                                bf_set(lpfc_sli4_sge_last, sgl, 0);
                        bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
                        sgl->word2 = cpu_to_le32(sgl->word2);
-                       sgl->word3 = cpu_to_le32(sgl->word3);
+                       sgl->sge_len = cpu_to_le32(dma_len);
                        dma_offset += dma_len;
                        sgl++;
                }
@@ -1978,7 +2017,7 @@ lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport,
 }
 
 /**
- * lpfc_scsi_unprep_dma_buf_s3 - Un-map DMA mapping of SG-list for SLI3 dev
+ * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev
  * @phba: The HBA for which this call is being executed.
  * @psb: The scsi buffer which is going to be un-mapped.
  *
@@ -1986,7 +2025,7 @@ lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport,
  * field of @lpfc_cmd for device with SLI-3 interface spec.
  **/
 static void
-lpfc_scsi_unprep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
+lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
 {
        /*
         * There are only two special cases to consider.  (1) the scsi command
@@ -2003,36 +2042,6 @@ lpfc_scsi_unprep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
 }
 
 /**
- * lpfc_scsi_unprep_dma_buf_s4 - Un-map DMA mapping of SG-list for SLI4 dev
- * @phba: The Hba for which this call is being executed.
- * @psb: The scsi buffer which is going to be un-mapped.
- *
- * This routine does DMA un-mapping of scatter gather list of scsi command
- * field of @lpfc_cmd for device with SLI-4 interface spec. If we have to
- * remove the sgl for this scsi buffer then we will do it here. For now
- * we should be able to just call the sli3 unprep routine.
- **/
-static void
-lpfc_scsi_unprep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
-{
-       lpfc_scsi_unprep_dma_buf_s3(phba, psb);
-}
-
-/**
- * lpfc_scsi_unprep_dma_buf - Wrapper function for unmap DMA mapping of SG-list
- * @phba: The Hba for which this call is being executed.
- * @psb: The scsi buffer which is going to be un-mapped.
- *
- * This routine does DMA un-mapping of scatter gather list of scsi command
- * field of @lpfc_cmd for device with SLI-4 interface spec.
- **/
-static void
-lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
-{
-       phba->lpfc_scsi_unprep_dma_buf(phba, psb);
-}
-
-/**
  * lpfc_handler_fcp_err - FCP response handler
  * @vport: The virtual port for which this call is being executed.
  * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
@@ -2068,6 +2077,21 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
                goto out;
        }
 
+       if (resp_info & RSP_LEN_VALID) {
+               rsplen = be32_to_cpu(fcprsp->rspRspLen);
+               if ((rsplen != 0 && rsplen != 4 && rsplen != 8) ||
+                   (fcprsp->rspInfo3 != RSP_NO_FAILURE)) {
+                       lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+                                "2719 Invalid response length: "
+                                "tgt x%x lun x%x cmnd x%x rsplen x%x\n",
+                                cmnd->device->id,
+                                cmnd->device->lun, cmnd->cmnd[0],
+                                rsplen);
+                       host_status = DID_ERROR;
+                       goto out;
+               }
+       }
+
        if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) {
                uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen);
                if (snslen > SCSI_SENSE_BUFFERSIZE)
@@ -2092,15 +2116,6 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
                         be32_to_cpu(fcprsp->rspRspLen),
                         fcprsp->rspInfo3);
 
-       if (resp_info & RSP_LEN_VALID) {
-               rsplen = be32_to_cpu(fcprsp->rspRspLen);
-               if ((rsplen != 0 && rsplen != 4 && rsplen != 8) ||
-                   (fcprsp->rspInfo3 != RSP_NO_FAILURE)) {
-                       host_status = DID_ERROR;
-                       goto out;
-               }
-       }
-
        scsi_set_resid(cmnd, 0);
        if (resp_info & RESID_UNDER) {
                scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId));
@@ -2151,7 +2166,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
        } else if (resp_info & RESID_OVER) {
                lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
                                 "9028 FCP command x%x residual overrun error. "
-                                "Data: x%x x%x \n", cmnd->cmnd[0],
+                                "Data: x%x x%x\n", cmnd->cmnd[0],
                                 scsi_bufflen(cmnd), scsi_get_resid(cmnd));
                host_status = DID_ERROR;
 
@@ -2198,7 +2213,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
        struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
        int result;
        struct scsi_device *tmp_sdev;
-       int depth = 0;
+       int depth;
        unsigned long flags;
        struct lpfc_fast_path_event *fast_path_evt;
        struct Scsi_Host *shost = cmd->device->host;
@@ -2206,6 +2221,9 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
 
        lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4];
        lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
+       /* pick up SLI4 exhange busy status from HBA */
+       lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY;
+
        if (pnode && NLP_CHK_NODE_ACT(pnode))
                atomic_dec(&pnode->cmd_pending);
 
@@ -2282,7 +2300,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
                                        lpfc_printf_vlog(vport, KERN_WARNING,
                                                        LOG_BG,
                                                        "9031 non-zero BGSTAT "
-                                                       "on unprotected cmd");
+                                                       "on unprotected cmd\n");
                                }
                        }
 
@@ -2365,67 +2383,29 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
                return;
        }
 
-
        if (!result)
                lpfc_rampup_queue_depth(vport, queue_depth);
 
-       if (!result && pnode && NLP_CHK_NODE_ACT(pnode) &&
-          ((jiffies - pnode->last_ramp_up_time) >
-               LPFC_Q_RAMP_UP_INTERVAL * HZ) &&
-          ((jiffies - pnode->last_q_full_time) >
-               LPFC_Q_RAMP_UP_INTERVAL * HZ) &&
-          (vport->cfg_lun_queue_depth > queue_depth)) {
-               shost_for_each_device(tmp_sdev, shost) {
-                       if (vport->cfg_lun_queue_depth > tmp_sdev->queue_depth){
-                               if (tmp_sdev->id != scsi_id)
-                                       continue;
-                               if (tmp_sdev->ordered_tags)
-                                       scsi_adjust_queue_depth(tmp_sdev,
-                                               MSG_ORDERED_TAG,
-                                               tmp_sdev->queue_depth+1);
-                               else
-                                       scsi_adjust_queue_depth(tmp_sdev,
-                                               MSG_SIMPLE_TAG,
-                                               tmp_sdev->queue_depth+1);
-
-                               pnode->last_ramp_up_time = jiffies;
-                       }
-               }
-               lpfc_send_sdev_queuedepth_change_event(phba, vport, pnode,
-                       0xFFFFFFFF,
-                       queue_depth , queue_depth + 1);
-       }
-
        /*
         * Check for queue full.  If the lun is reporting queue full, then
         * back off the lun queue depth to prevent target overloads.
         */
        if (result == SAM_STAT_TASK_SET_FULL && pnode &&
            NLP_CHK_NODE_ACT(pnode)) {
-               pnode->last_q_full_time = jiffies;
-
                shost_for_each_device(tmp_sdev, shost) {
                        if (tmp_sdev->id != scsi_id)
                                continue;
                        depth = scsi_track_queue_full(tmp_sdev,
-                                       tmp_sdev->queue_depth - 1);
-               }
-               /*
-                * The queue depth cannot be lowered any more.
-                * Modify the returned error code to store
-                * the final depth value set by
-                * scsi_track_queue_full.
-                */
-               if (depth == -1)
-                       depth = shost->cmd_per_lun;
-
-               if (depth) {
+                                                     tmp_sdev->queue_depth-1);
+                       if (depth <= 0)
+                               continue;
                        lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
                                         "0711 detected queue full - lun queue "
                                         "depth adjusted to %d.\n", depth);
                        lpfc_send_sdev_queuedepth_change_event(phba, vport,
-                               pnode, 0xFFFFFFFF,
-                               depth+1, depth);
+                                                              pnode,
+                                                              tmp_sdev->lun,
+                                                              depth+1, depth);
                }
        }
 
@@ -2461,7 +2441,7 @@ lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd)
 }
 
 /**
- * lpfc_scsi_prep_cmnd_s3 - Convert scsi cmnd to FCP infor unit for SLI3 dev
+ * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
  * @vport: The virtual port for which this call is being executed.
  * @lpfc_cmd: The scsi command which needs to send.
  * @pnode: Pointer to lpfc_nodelist.
@@ -2470,7 +2450,7 @@ lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd)
  * to transfer for device with SLI3 interface spec.
  **/
 static void
-lpfc_scsi_prep_cmnd_s3(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
+lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
                    struct lpfc_nodelist *pnode)
 {
        struct lpfc_hba *phba = vport->phba;
@@ -2558,46 +2538,7 @@ lpfc_scsi_prep_cmnd_s3(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
 }
 
 /**
- * lpfc_scsi_prep_cmnd_s4 - Convert scsi cmnd to FCP infor unit for SLI4 dev
- * @vport: The virtual port for which this call is being executed.
- * @lpfc_cmd: The scsi command which needs to send.
- * @pnode: Pointer to lpfc_nodelist.
- *
- * This routine initializes fcp_cmnd and iocb data structure from scsi command
- * to transfer for device with SLI4 interface spec.
- **/
-static void
-lpfc_scsi_prep_cmnd_s4(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
-                      struct lpfc_nodelist *pnode)
-{
-       /*
-        * The prep cmnd routines do not touch the sgl or its
-        * entries. We may not have to do anything different.
-        * I will leave this function in place until we can
-        * run some IO through the driver and determine if changes
-        * are needed.
-        */
-       return lpfc_scsi_prep_cmnd_s3(vport, lpfc_cmd, pnode);
-}
-
-/**
- * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
- * @vport: The virtual port for which this call is being executed.
- * @lpfc_cmd: The scsi command which needs to send.
- * @pnode: Pointer to lpfc_nodelist.
- *
- * This routine wraps the actual convert SCSI cmnd function pointer from
- * the lpfc_hba struct.
- **/
-static inline void
-lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
-                   struct lpfc_nodelist *pnode)
-{
-       vport->phba->lpfc_scsi_prep_cmnd(vport, lpfc_cmd, pnode);
-}
-
-/**
- * lpfc_scsi_prep_task_mgmt_cmnd_s3 - Convert SLI3 scsi TM cmd to FCP info unit
+ * lpfc_scsi_prep_task_mgmt_cmnd - Convert SLI3 scsi TM cmd to FCP info unit
  * @vport: The virtual port for which this call is being executed.
  * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
  * @lun: Logical unit number.
@@ -2611,7 +2552,7 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
  *   1 - Success
  **/
 static int
-lpfc_scsi_prep_task_mgmt_cmd_s3(struct lpfc_vport *vport,
+lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
                             struct lpfc_scsi_buf *lpfc_cmd,
                             unsigned int lun,
                             uint8_t task_mgmt_cmd)
@@ -2653,68 +2594,13 @@ lpfc_scsi_prep_task_mgmt_cmd_s3(struct lpfc_vport *vport,
                 * The driver will provide the timeout mechanism.
                 */
                piocb->ulpTimeout = 0;
-       } else {
+       } else
                piocb->ulpTimeout = lpfc_cmd->timeout;
-       }
-
-       return 1;
-}
-
-/**
- * lpfc_scsi_prep_task_mgmt_cmnd_s4 - Convert SLI4 scsi TM cmd to FCP info unit
- * @vport: The virtual port for which this call is being executed.
- * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
- * @lun: Logical unit number.
- * @task_mgmt_cmd: SCSI task management command.
- *
- * This routine creates FCP information unit corresponding to @task_mgmt_cmd
- * for device with SLI-4 interface spec.
- *
- * Return codes:
- *     0 - Error
- *     1 - Success
- **/
-static int
-lpfc_scsi_prep_task_mgmt_cmd_s4(struct lpfc_vport *vport,
-                               struct lpfc_scsi_buf *lpfc_cmd,
-                               unsigned int lun,
-                               uint8_t task_mgmt_cmd)
-{
-       /*
-        * The prep cmnd routines do not touch the sgl or its
-        * entries. We may not have to do anything different.
-        * I will leave this function in place until we can
-        * run some IO through the driver and determine if changes
-        * are needed.
-        */
-       return lpfc_scsi_prep_task_mgmt_cmd_s3(vport, lpfc_cmd, lun,
-                                               task_mgmt_cmd);
-}
 
-/**
- * lpfc_scsi_prep_task_mgmt_cmnd - Wrapper func convert scsi TM cmd to FCP info
- * @vport: The virtual port for which this call is being executed.
- * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
- * @lun: Logical unit number.
- * @task_mgmt_cmd: SCSI task management command.
- *
- * This routine wraps the actual convert SCSI TM to FCP information unit
- * function pointer from the lpfc_hba struct.
- *
- * Return codes:
- *     0 - Error
- *     1 - Success
- **/
-static inline int
-lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
-                            struct lpfc_scsi_buf *lpfc_cmd,
-                            unsigned int lun,
-                            uint8_t task_mgmt_cmd)
-{
-       struct lpfc_hba *phba = vport->phba;
+       if (vport->phba->sli_rev == LPFC_SLI_REV4)
+               lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd);
 
-       return phba->lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun,
-                                                 task_mgmt_cmd);
+       return 1;
 }
 
 /**
@@ -2730,23 +2616,19 @@ int
 lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
 {
 
+       phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf;
+       phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd;
+       phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf;
+
        switch (dev_grp) {
        case LPFC_PCI_DEV_LP:
                phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3;
                phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3;
-               phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd_s3;
-               phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf_s3;
-               phba->lpfc_scsi_prep_task_mgmt_cmd =
-                                       lpfc_scsi_prep_task_mgmt_cmd_s3;
                phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
                break;
        case LPFC_PCI_DEV_OC:
                phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4;
                phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
-               phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd_s4;
-               phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf_s4;
-               phba->lpfc_scsi_prep_task_mgmt_cmd =
-                                       lpfc_scsi_prep_task_mgmt_cmd_s4;
                phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4;
                break;
        default:
@@ -2758,6 +2640,7 @@ lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
        }
        phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf;
        phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
+       phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
        return 0;
 }
 
@@ -2783,72 +2666,6 @@ lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba,
 }
 
 /**
- * lpfc_scsi_tgt_reset - Target reset handler
- * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure
- * @vport: The virtual port for which this call is being executed.
- * @tgt_id: Target ID.
- * @lun: Lun number.
- * @rdata: Pointer to lpfc_rport_data.
- *
- * This routine issues a TARGET RESET iocb to reset a target with @tgt_id ID.
- *
- * Return Code:
- *   0x2003 - Error
- *   0x2002 - Success.
- **/
-static int
-lpfc_scsi_tgt_reset(struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_vport *vport,
-                   unsigned  tgt_id, unsigned int lun,
-                   struct lpfc_rport_data *rdata)
-{
-       struct lpfc_hba   *phba = vport->phba;
-       struct lpfc_iocbq *iocbq;
-       struct lpfc_iocbq *iocbqrsp;
-       int ret;
-       int status;
-
-       if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode))
-               return FAILED;
-
-       lpfc_cmd->rdata = rdata;
-       status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun,
-                                          FCP_TARGET_RESET);
-       if (!status)
-               return FAILED;
-
-       iocbq = &lpfc_cmd->cur_iocbq;
-       iocbqrsp = lpfc_sli_get_iocbq(phba);
-
-       if (!iocbqrsp)
-               return FAILED;
-
-       /* Issue Target Reset to TGT <num> */
-       lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
-                        "0702 Issue Target Reset to TGT %d Data: x%x x%x\n",
-                        tgt_id, rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag);
-       status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
-                                         iocbq, iocbqrsp, lpfc_cmd->timeout);
-       if (status != IOCB_SUCCESS) {
-               if (status == IOCB_TIMEDOUT) {
-                       iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
-                       ret = TIMEOUT_ERROR;
-               } else
-                       ret = FAILED;
-               lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
-       } else {
-               ret = SUCCESS;
-               lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4];
-               lpfc_cmd->status = iocbqrsp->iocb.ulpStatus;
-               if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
-                       (lpfc_cmd->result & IOERR_DRVR_MASK))
-                               lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
-       }
-
-       lpfc_sli_release_iocbq(phba, iocbqrsp);
-       return ret;
-}
-
-/**
  * lpfc_info - Info entry point of scsi_host_template data structure
  * @host: The scsi host for which this call is being executed.
  *
@@ -2882,6 +2699,13 @@ lpfc_info(struct Scsi_Host *host)
                                 " port %s",
                                 phba->Port);
                }
+               len = strlen(lpfcinfobuf);
+               if (phba->sli4_hba.link_state.logical_speed) {
+                       snprintf(lpfcinfobuf + len,
+                                384-len,
+                                " Logical Link Speed: %d Mbps",
+                                phba->sli4_hba.link_state.logical_speed * 10);
+               }
        }
        return lpfcinfobuf;
 }
@@ -2927,7 +2751,9 @@ void lpfc_poll_timeout(unsigned long ptr)
        struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
 
        if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
-               lpfc_sli_poll_fcp_ring (phba);
+               lpfc_sli_handle_fast_ring_event(phba,
+                       &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
+
                if (phba->cfg_poll & DISABLE_FCP_RING_INT)
                        lpfc_poll_rearm_timer(phba);
        }
@@ -2953,7 +2779,7 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
        struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
        struct lpfc_hba   *phba = vport->phba;
        struct lpfc_rport_data *rdata = cmnd->device->hostdata;
-       struct lpfc_nodelist *ndlp = rdata->pnode;
+       struct lpfc_nodelist *ndlp;
        struct lpfc_scsi_buf *lpfc_cmd;
        struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
        int err;
@@ -2963,13 +2789,15 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
                cmnd->result = err;
                goto out_fail_command;
        }
+       ndlp = rdata->pnode;
 
        if (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
                scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
 
-               printk(KERN_ERR "BLKGRD ERROR: rcvd protected cmd:%02x op:%02x "
-                               "str=%s without registering for BlockGuard - "
-                               "Rejecting command\n",
+               lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+                               "9058 BLKGRD: ERROR: rcvd protected cmd:%02x"
+                               " op:%02x str=%s without registering for"
+                               " BlockGuard - Rejecting command\n",
                                cmnd->cmnd[0], scsi_get_prot_op(cmnd),
                                dif_op_str[scsi_get_prot_op(cmnd)]);
                goto out_fail_command;
@@ -3009,61 +2837,66 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
        cmnd->scsi_done = done;
 
        if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
-               lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+               if (vport->phba->cfg_enable_bg) {
+                       lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
                                "9033 BLKGRD: rcvd protected cmd:%02x op:%02x "
                                "str=%s\n",
                                cmnd->cmnd[0], scsi_get_prot_op(cmnd),
                                dif_op_str[scsi_get_prot_op(cmnd)]);
-               lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+                       lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
                                "9034 BLKGRD: CDB: %02x %02x %02x %02x %02x "
-                               "%02x %02x %02x %02x %02x \n",
+                               "%02x %02x %02x %02x %02x\n",
                                cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2],
                                cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5],
                                cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8],
                                cmnd->cmnd[9]);
-               if (cmnd->cmnd[0] == READ_10)
-                       lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+                       if (cmnd->cmnd[0] == READ_10)
+                               lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
                                        "9035 BLKGRD: READ @ sector %llu, "
-                                        "count %lu\n",
-                                        (unsigned long long)scsi_get_lba(cmnd),
-                                       cmnd->request->nr_sectors);
-               else if (cmnd->cmnd[0] == WRITE_10)
-                       lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+                                       "count %u\n",
+                                       (unsigned long long)scsi_get_lba(cmnd),
+                                       blk_rq_sectors(cmnd->request));
+                       else if (cmnd->cmnd[0] == WRITE_10)
+                               lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
                                        "9036 BLKGRD: WRITE @ sector %llu, "
-                                       "count %lu cmd=%p\n",
+                                       "count %u cmd=%p\n",
                                        (unsigned long long)scsi_get_lba(cmnd),
-                                       cmnd->request->nr_sectors,
+                                       blk_rq_sectors(cmnd->request),
                                        cmnd);
+               }
 
                err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
        } else {
-               lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
-                               "9038 BLKGRD: rcvd unprotected cmd:%02x op:%02x"
-                               " str=%s\n",
-                               cmnd->cmnd[0], scsi_get_prot_op(cmnd),
-                               dif_op_str[scsi_get_prot_op(cmnd)]);
-               lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
-                                "9039 BLKGRD: CDB: %02x %02x %02x %02x %02x "
-                                "%02x %02x %02x %02x %02x \n",
-                                cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2],
-                                cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5],
-                                cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8],
-                                cmnd->cmnd[9]);
-               if (cmnd->cmnd[0] == READ_10)
-                       lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
-                                        "9040 dbg: READ @ sector %llu, "
-                                        "count %lu\n",
-                                        (unsigned long long)scsi_get_lba(cmnd),
-                                        cmnd->request->nr_sectors);
-               else if (cmnd->cmnd[0] == WRITE_10)
+               if (vport->phba->cfg_enable_bg) {
                        lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+                                       "9038 BLKGRD: rcvd unprotected cmd:"
+                                       "%02x op:%02x str=%s\n",
+                                       cmnd->cmnd[0], scsi_get_prot_op(cmnd),
+                                       dif_op_str[scsi_get_prot_op(cmnd)]);
+                               lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+                                       "9039 BLKGRD: CDB: %02x %02x %02x "
+                                       "%02x %02x %02x %02x %02x %02x %02x\n",
+                                       cmnd->cmnd[0], cmnd->cmnd[1],
+                                       cmnd->cmnd[2], cmnd->cmnd[3],
+                                       cmnd->cmnd[4], cmnd->cmnd[5],
+                                       cmnd->cmnd[6], cmnd->cmnd[7],
+                                       cmnd->cmnd[8], cmnd->cmnd[9]);
+                       if (cmnd->cmnd[0] == READ_10)
+                               lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+                                       "9040 dbg: READ @ sector %llu, "
+                                       "count %u\n",
+                                       (unsigned long long)scsi_get_lba(cmnd),
+                                        blk_rq_sectors(cmnd->request));
+                       else if (cmnd->cmnd[0] == WRITE_10)
+                               lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
                                         "9041 dbg: WRITE @ sector %llu, "
-                                        "count %lu cmd=%p\n",
+                                        "count %u cmd=%p\n",
                                         (unsigned long long)scsi_get_lba(cmnd),
-                                        cmnd->request->nr_sectors, cmnd);
-               else
-                       lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+                                        blk_rq_sectors(cmnd->request), cmnd);
+                       else
+                               lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
                                         "9042 dbg: parser not implemented\n");
+               }
                err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
        }
 
@@ -3080,7 +2913,11 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
                goto out_host_busy_free_buf;
        }
        if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
-               lpfc_sli_poll_fcp_ring(phba);
+               spin_unlock(shost->host_lock);
+               lpfc_sli_handle_fast_ring_event(phba,
+                       &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
+
+               spin_lock(shost->host_lock);
                if (phba->cfg_poll & DISABLE_FCP_RING_INT)
                        lpfc_poll_rearm_timer(phba);
        }
@@ -3099,28 +2936,6 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
 }
 
 /**
- * lpfc_block_error_handler - Routine to block error  handler
- * @cmnd: Pointer to scsi_cmnd data structure.
- *
- *  This routine blocks execution till fc_rport state is not FC_PORSTAT_BLCOEKD.
- **/
-static void
-lpfc_block_error_handler(struct scsi_cmnd *cmnd)
-{
-       struct Scsi_Host *shost = cmnd->device->host;
-       struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
-
-       spin_lock_irq(shost->host_lock);
-       while (rport->port_state == FC_PORTSTATE_BLOCKED) {
-               spin_unlock_irq(shost->host_lock);
-               msleep(1000);
-               spin_lock_irq(shost->host_lock);
-       }
-       spin_unlock_irq(shost->host_lock);
-       return;
-}
-
-/**
  * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
  * @cmnd: Pointer to scsi_cmnd data structure.
  *
@@ -3143,7 +2958,7 @@ lpfc_abort_handler(struct scsi_cmnd *cmnd)
        int ret = SUCCESS;
        DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
 
-       lpfc_block_error_handler(cmnd);
+       fc_block_scsi_eh(cmnd);
        lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
        BUG_ON(!lpfc_cmd);
 
@@ -3183,6 +2998,11 @@ lpfc_abort_handler(struct scsi_cmnd *cmnd)
 
        icmd->ulpLe = 1;
        icmd->ulpClass = cmd->ulpClass;
+
+       /* ABTS WQE must go to the same WQ as the WQE to be aborted */
+       abtsiocb->fcp_wqidx = iocb->fcp_wqidx;
+       abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX;
+
        if (lpfc_is_link_up(phba))
                icmd->ulpCommand = CMD_ABORT_XRI_CN;
        else
@@ -3198,7 +3018,8 @@ lpfc_abort_handler(struct scsi_cmnd *cmnd)
        }
 
        if (phba->cfg_poll & DISABLE_FCP_RING_INT)
-               lpfc_sli_poll_fcp_ring (phba);
+               lpfc_sli_handle_fast_ring_event(phba,
+                       &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
 
        lpfc_cmd->waitq = &waitq;
        /* Wait for abort to complete */
@@ -3228,156 +3049,352 @@ lpfc_abort_handler(struct scsi_cmnd *cmnd)
        return ret;
 }
 
+static char *
+lpfc_taskmgmt_name(uint8_t task_mgmt_cmd)
+{
+       switch (task_mgmt_cmd) {
+       case FCP_ABORT_TASK_SET:
+               return "ABORT_TASK_SET";
+       case FCP_CLEAR_TASK_SET:
+               return "FCP_CLEAR_TASK_SET";
+       case FCP_BUS_RESET:
+               return "FCP_BUS_RESET";
+       case FCP_LUN_RESET:
+               return "FCP_LUN_RESET";
+       case FCP_TARGET_RESET:
+               return "FCP_TARGET_RESET";
+       case FCP_CLEAR_ACA:
+               return "FCP_CLEAR_ACA";
+       case FCP_TERMINATE_TASK:
+               return "FCP_TERMINATE_TASK";
+       default:
+               return "unknown";
+       }
+}
+
 /**
- * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
- * @cmnd: Pointer to scsi_cmnd data structure.
+ * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler
+ * @vport: The virtual port for which this call is being executed.
+ * @rdata: Pointer to remote port local data
+ * @tgt_id: Target ID of remote device.
+ * @lun_id: Lun number for the TMF
+ * @task_mgmt_cmd: type of TMF to send
  *
- * This routine does a device reset by sending a TARGET_RESET task management
- * command.
+ * This routine builds and sends a TMF (SCSI Task Mgmt Function) to
+ * a remote port.
  *
- * Return code :
- *  0x2003 - Error
- *  0x2002 - Success
+ * Return Code:
+ *   0x2003 - Error
+ *   0x2002 - Success.
  **/
 static int
-lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
+lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata,
+                   unsigned  tgt_id, unsigned int lun_id,
+                   uint8_t task_mgmt_cmd)
 {
-       struct Scsi_Host  *shost = cmnd->device->host;
-       struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
        struct lpfc_hba   *phba = vport->phba;
        struct lpfc_scsi_buf *lpfc_cmd;
-       struct lpfc_iocbq *iocbq, *iocbqrsp;
-       struct lpfc_rport_data *rdata = cmnd->device->hostdata;
-       struct lpfc_nodelist *pnode = rdata->pnode;
-       unsigned long later;
-       int ret = SUCCESS;
+       struct lpfc_iocbq *iocbq;
+       struct lpfc_iocbq *iocbqrsp;
+       int ret;
        int status;
-       int cnt;
-       struct lpfc_scsi_event_header scsi_event;
-
-       lpfc_block_error_handler(cmnd);
-       /*
-        * If target is not in a MAPPED state, delay the reset until
-        * target is rediscovered or devloss timeout expires.
-        */
-       later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
-       while (time_after(later, jiffies)) {
-               if (!pnode || !NLP_CHK_NODE_ACT(pnode))
-                       return FAILED;
-               if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
-                       break;
-               schedule_timeout_uninterruptible(msecs_to_jiffies(500));
-               rdata = cmnd->device->hostdata;
-               if (!rdata)
-                       break;
-               pnode = rdata->pnode;
-       }
-
-       scsi_event.event_type = FC_REG_SCSI_EVENT;
-       scsi_event.subcategory = LPFC_EVENT_TGTRESET;
-       scsi_event.lun = 0;
-       memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
-       memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
 
-       fc_host_post_vendor_event(shost,
-               fc_get_event_number(),
-               sizeof(scsi_event),
-               (char *)&scsi_event,
-               LPFC_NL_VENDOR_ID);
-
-       if (!rdata || pnode->nlp_state != NLP_STE_MAPPED_NODE) {
-               lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
-                                "0721 LUN Reset rport "
-                                "failure: msec x%x rdata x%p\n",
-                                jiffies_to_msecs(jiffies - later), rdata);
+       if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode))
                return FAILED;
-       }
+
        lpfc_cmd = lpfc_get_scsi_buf(phba);
        if (lpfc_cmd == NULL)
                return FAILED;
        lpfc_cmd->timeout = 60;
        lpfc_cmd->rdata = rdata;
 
-       status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd,
-                                             cmnd->device->lun,
-                                             FCP_TARGET_RESET);
+       status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id,
+                                          task_mgmt_cmd);
        if (!status) {
                lpfc_release_scsi_buf(phba, lpfc_cmd);
                return FAILED;
        }
-       iocbq = &lpfc_cmd->cur_iocbq;
 
-       /* get a buffer for this IOCB command response */
+       iocbq = &lpfc_cmd->cur_iocbq;
        iocbqrsp = lpfc_sli_get_iocbq(phba);
        if (iocbqrsp == NULL) {
                lpfc_release_scsi_buf(phba, lpfc_cmd);
                return FAILED;
        }
+
        lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
-                        "0703 Issue target reset to TGT %d LUN %d "
-                        "rpi x%x nlp_flag x%x\n", cmnd->device->id,
-                        cmnd->device->lun, pnode->nlp_rpi, pnode->nlp_flag);
+                        "0702 Issue %s to TGT %d LUN %d "
+                        "rpi x%x nlp_flag x%x\n",
+                        lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id,
+                        rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag);
+
        status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
                                          iocbq, iocbqrsp, lpfc_cmd->timeout);
-       if (status == IOCB_TIMEDOUT) {
-               iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
-               ret = TIMEOUT_ERROR;
-       } else {
-               if (status != IOCB_SUCCESS)
+       if (status != IOCB_SUCCESS) {
+               if (status == IOCB_TIMEDOUT) {
+                       iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
+                       ret = TIMEOUT_ERROR;
+               } else
                        ret = FAILED;
-               lpfc_release_scsi_buf(phba, lpfc_cmd);
-       }
-       lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
-                        "0713 SCSI layer issued device reset (%d, %d) "
-                        "return x%x status x%x result x%x\n",
-                        cmnd->device->id, cmnd->device->lun, ret,
-                        iocbqrsp->iocb.ulpStatus,
+               lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
+               lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+                        "0727 TMF %s to TGT %d LUN %d failed (%d, %d)\n",
+                        lpfc_taskmgmt_name(task_mgmt_cmd),
+                        tgt_id, lun_id, iocbqrsp->iocb.ulpStatus,
                         iocbqrsp->iocb.un.ulpWord[4]);
+       } else
+               ret = SUCCESS;
+
        lpfc_sli_release_iocbq(phba, iocbqrsp);
-       cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, cmnd->device->lun,
-                               LPFC_CTX_TGT);
+
+       if (ret != TIMEOUT_ERROR)
+               lpfc_release_scsi_buf(phba, lpfc_cmd);
+
+       return ret;
+}
+
+/**
+ * lpfc_chk_tgt_mapped -
+ * @vport: The virtual port to check on
+ * @cmnd: Pointer to scsi_cmnd data structure.
+ *
+ * This routine delays until the scsi target (aka rport) for the
+ * command exists (is present and logged in) or we declare it non-existent.
+ *
+ * Return code :
+ *  0x2003 - Error
+ *  0x2002 - Success
+ **/
+static int
+lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd)
+{
+       struct lpfc_rport_data *rdata = cmnd->device->hostdata;
+       struct lpfc_nodelist *pnode;
+       unsigned long later;
+
+       if (!rdata) {
+               lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+                       "0797 Tgt Map rport failure: rdata x%p\n", rdata);
+               return FAILED;
+       }
+       pnode = rdata->pnode;
+       /*
+        * If target is not in a MAPPED state, delay until
+        * target is rediscovered or devloss timeout expires.
+        */
+       later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
+       while (time_after(later, jiffies)) {
+               if (!pnode || !NLP_CHK_NODE_ACT(pnode))
+                       return FAILED;
+               if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
+                       return SUCCESS;
+               schedule_timeout_uninterruptible(msecs_to_jiffies(500));
+               rdata = cmnd->device->hostdata;
+               if (!rdata)
+                       return FAILED;
+               pnode = rdata->pnode;
+       }
+       if (!pnode || !NLP_CHK_NODE_ACT(pnode) ||
+           (pnode->nlp_state != NLP_STE_MAPPED_NODE))
+               return FAILED;
+       return SUCCESS;
+}
+
+/**
+ * lpfc_reset_flush_io_context -
+ * @vport: The virtual port (scsi_host) for the flush context
+ * @tgt_id: If aborting by Target contect - specifies the target id
+ * @lun_id: If aborting by Lun context - specifies the lun id
+ * @context: specifies the context level to flush at.
+ *
+ * After a reset condition via TMF, we need to flush orphaned i/o
+ * contexts from the adapter. This routine aborts any contexts
+ * outstanding, then waits for their completions. The wait is
+ * bounded by devloss_tmo though.
+ *
+ * Return code :
+ *  0x2003 - Error
+ *  0x2002 - Success
+ **/
+static int
+lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id,
+                       uint64_t lun_id, lpfc_ctx_cmd context)
+{
+       struct lpfc_hba   *phba = vport->phba;
+       unsigned long later;
+       int cnt;
+
+       cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
        if (cnt)
                lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
-                                   cmnd->device->id, cmnd->device->lun,
-                                   LPFC_CTX_TGT);
+                                   tgt_id, lun_id, context);
        later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
        while (time_after(later, jiffies) && cnt) {
                schedule_timeout_uninterruptible(msecs_to_jiffies(20));
-               cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id,
-                                       cmnd->device->lun, LPFC_CTX_TGT);
+               cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
        }
        if (cnt) {
                lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
-                                "0719 device reset I/O flush failure: "
-                                "cnt x%x\n", cnt);
-               ret = FAILED;
+                       "0724 I/O flush failure for context %s : cnt x%x\n",
+                       ((context == LPFC_CTX_LUN) ? "LUN" :
+                        ((context == LPFC_CTX_TGT) ? "TGT" :
+                         ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))),
+                       cnt);
+               return FAILED;
        }
-       return ret;
+       return SUCCESS;
+}
+
+/**
+ * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
+ * @cmnd: Pointer to scsi_cmnd data structure.
+ *
+ * This routine does a device reset by sending a LUN_RESET task management
+ * command.
+ *
+ * Return code :
+ *  0x2003 - Error
+ *  0x2002 - Success
+ **/
+static int
+lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
+{
+       struct Scsi_Host  *shost = cmnd->device->host;
+       struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
+       struct lpfc_rport_data *rdata = cmnd->device->hostdata;
+       struct lpfc_nodelist *pnode;
+       unsigned tgt_id = cmnd->device->id;
+       unsigned int lun_id = cmnd->device->lun;
+       struct lpfc_scsi_event_header scsi_event;
+       int status;
+
+       if (!rdata) {
+               lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+                       "0798 Device Reset rport failure: rdata x%p\n", rdata);
+               return FAILED;
+       }
+       pnode = rdata->pnode;
+       fc_block_scsi_eh(cmnd);
+
+       status = lpfc_chk_tgt_mapped(vport, cmnd);
+       if (status == FAILED) {
+               lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+                       "0721 Device Reset rport failure: rdata x%p\n", rdata);
+               return FAILED;
+       }
+
+       scsi_event.event_type = FC_REG_SCSI_EVENT;
+       scsi_event.subcategory = LPFC_EVENT_LUNRESET;
+       scsi_event.lun = lun_id;
+       memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
+       memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
+
+       fc_host_post_vendor_event(shost, fc_get_event_number(),
+               sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
+
+       status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id,
+                                               FCP_LUN_RESET);
+
+       lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+                        "0713 SCSI layer issued Device Reset (%d, %d) "
+                        "return x%x\n", tgt_id, lun_id, status);
+
+       /*
+        * We have to clean up i/o as : they may be orphaned by the TMF;
+        * or if the TMF failed, they may be in an indeterminate state.
+        * So, continue on.
+        * We will report success if all the i/o aborts successfully.
+        */
+       status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
+                                               LPFC_CTX_LUN);
+       return status;
+}
+
+/**
+ * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point
+ * @cmnd: Pointer to scsi_cmnd data structure.
+ *
+ * This routine does a target reset by sending a TARGET_RESET task management
+ * command.
+ *
+ * Return code :
+ *  0x2003 - Error
+ *  0x2002 - Success
+ **/
+static int
+lpfc_target_reset_handler(struct scsi_cmnd *cmnd)
+{
+       struct Scsi_Host  *shost = cmnd->device->host;
+       struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
+       struct lpfc_rport_data *rdata = cmnd->device->hostdata;
+       struct lpfc_nodelist *pnode;
+       unsigned tgt_id = cmnd->device->id;
+       unsigned int lun_id = cmnd->device->lun;
+       struct lpfc_scsi_event_header scsi_event;
+       int status;
+
+       if (!rdata) {
+               lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+                       "0799 Target Reset rport failure: rdata x%p\n", rdata);
+               return FAILED;
+       }
+       pnode = rdata->pnode;
+       fc_block_scsi_eh(cmnd);
+
+       status = lpfc_chk_tgt_mapped(vport, cmnd);
+       if (status == FAILED) {
+               lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+                       "0722 Target Reset rport failure: rdata x%p\n", rdata);
+               return FAILED;
+       }
+
+       scsi_event.event_type = FC_REG_SCSI_EVENT;
+       scsi_event.subcategory = LPFC_EVENT_TGTRESET;
+       scsi_event.lun = 0;
+       memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
+       memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
+
+       fc_host_post_vendor_event(shost, fc_get_event_number(),
+               sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
+
+       status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id,
+                                       FCP_TARGET_RESET);
+
+       lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+                        "0723 SCSI layer issued Target Reset (%d, %d) "
+                        "return x%x\n", tgt_id, lun_id, status);
+
+       /*
+        * We have to clean up i/o as : they may be orphaned by the TMF;
+        * or if the TMF failed, they may be in an indeterminate state.
+        * So, continue on.
+        * We will report success if all the i/o aborts successfully.
+        */
+       status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
+                                       LPFC_CTX_TGT);
+       return status;
 }
 
 /**
  * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
  * @cmnd: Pointer to scsi_cmnd data structure.
  *
- * This routine does target reset to all target on @cmnd->device->host.
+ * This routine does target reset to all targets on @cmnd->device->host.
+ * This emulates Parallel SCSI Bus Reset Semantics.
  *
- * Return Code:
- *   0x2003 - Error
- *   0x2002 - Success
+ * Return code :
+ *  0x2003 - Error
+ *  0x2002 - Success
  **/
 static int
 lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
 {
        struct Scsi_Host  *shost = cmnd->device->host;
        struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
-       struct lpfc_hba   *phba = vport->phba;
        struct lpfc_nodelist *ndlp = NULL;
-       int match;
-       int ret = SUCCESS, status = SUCCESS, i;
-       int cnt;
-       struct lpfc_scsi_buf * lpfc_cmd;
-       unsigned long later;
        struct lpfc_scsi_event_header scsi_event;
+       int match;
+       int ret = SUCCESS, status, i;
 
        scsi_event.event_type = FC_REG_SCSI_EVENT;
        scsi_event.subcategory = LPFC_EVENT_BUSRESET;
@@ -3385,13 +3402,11 @@ lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
        memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name));
        memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name));
 
-       fc_host_post_vendor_event(shost,
-               fc_get_event_number(),
-               sizeof(scsi_event),
-               (char *)&scsi_event,
-               LPFC_NL_VENDOR_ID);
+       fc_host_post_vendor_event(shost, fc_get_event_number(),
+               sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
+
+       fc_block_scsi_eh(cmnd);
 
-       lpfc_block_error_handler(cmnd);
        /*
         * Since the driver manages a single bus device, reset all
         * targets known to the driver.  Should any target reset
@@ -3414,16 +3429,11 @@ lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
                spin_unlock_irq(shost->host_lock);
                if (!match)
                        continue;
-               lpfc_cmd = lpfc_get_scsi_buf(phba);
-               if (lpfc_cmd) {
-                       lpfc_cmd->timeout = 60;
-                       status = lpfc_scsi_tgt_reset(lpfc_cmd, vport, i,
-                                                    cmnd->device->lun,
-                                                    ndlp->rport->dd_data);
-                       if (status != TIMEOUT_ERROR)
-                               lpfc_release_scsi_buf(phba, lpfc_cmd);
-               }
-               if (!lpfc_cmd || status != SUCCESS) {
+
+               status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data,
+                                       i, 0, FCP_TARGET_RESET);
+
+               if (status != SUCCESS) {
                        lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
                                         "0700 Bus Reset on target %d failed\n",
                                         i);
@@ -3431,25 +3441,16 @@ lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
                }
        }
        /*
-        * All outstanding txcmplq I/Os should have been aborted by
-        * the targets.  Unfortunately, some targets do not abide by
-        * this forcing the driver to double check.
+        * We have to clean up i/o as : they may be orphaned by the TMFs
+        * above; or if any of the TMFs failed, they may be in an
+        * indeterminate state.
+        * We will report success if all the i/o aborts successfully.
         */
-       cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST);
-       if (cnt)
-               lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
-                                   0, 0, LPFC_CTX_HOST);
-       later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
-       while (time_after(later, jiffies) && cnt) {
-               schedule_timeout_uninterruptible(msecs_to_jiffies(20));
-               cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST);
-       }
-       if (cnt) {
-               lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
-                                "0715 Bus Reset I/O flush failure: "
-                                "cnt x%x left x%x\n", cnt, i);
+
+       status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST);
+       if (status != SUCCESS)
                ret = FAILED;
-       }
+
        lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
                         "0714 SCSI layer issued Bus Reset Data: x%x\n", ret);
        return ret;
@@ -3518,6 +3519,8 @@ lpfc_slave_alloc(struct scsi_device *sdev)
                                 "Allocated %d buffers.\n",
                                 num_to_alloc, num_allocated);
        }
+       if (num_allocated > 0)
+               phba->total_scsi_bufs += num_allocated;
        return 0;
 }
 
@@ -3554,7 +3557,8 @@ lpfc_slave_configure(struct scsi_device *sdev)
        rport->dev_loss_tmo = vport->cfg_devloss_tmo;
 
        if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
-               lpfc_sli_poll_fcp_ring(phba);
+               lpfc_sli_handle_fast_ring_event(phba,
+                       &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
                if (phba->cfg_poll & DISABLE_FCP_RING_INT)
                        lpfc_poll_rearm_timer(phba);
        }
@@ -3582,7 +3586,8 @@ struct scsi_host_template lpfc_template = {
        .info                   = lpfc_info,
        .queuecommand           = lpfc_queuecommand,
        .eh_abort_handler       = lpfc_abort_handler,
-       .eh_device_reset_handler= lpfc_device_reset_handler,
+       .eh_device_reset_handler = lpfc_device_reset_handler,
+       .eh_target_reset_handler = lpfc_target_reset_handler,
        .eh_bus_reset_handler   = lpfc_bus_reset_handler,
        .slave_alloc            = lpfc_slave_alloc,
        .slave_configure        = lpfc_slave_configure,
@@ -3594,6 +3599,8 @@ struct scsi_host_template lpfc_template = {
        .use_clustering         = ENABLE_CLUSTERING,
        .shost_attrs            = lpfc_hba_attrs,
        .max_sectors            = 0xFFFF,
+       .vendor_id              = LPFC_NL_VENDOR_ID,
+       .change_queue_depth     = lpfc_change_queue_depth,
 };
 
 struct scsi_host_template lpfc_vport_template = {
@@ -3602,7 +3609,8 @@ struct scsi_host_template lpfc_vport_template = {
        .info                   = lpfc_info,
        .queuecommand           = lpfc_queuecommand,
        .eh_abort_handler       = lpfc_abort_handler,
-       .eh_device_reset_handler= lpfc_device_reset_handler,
+       .eh_device_reset_handler = lpfc_device_reset_handler,
+       .eh_target_reset_handler = lpfc_target_reset_handler,
        .eh_bus_reset_handler   = lpfc_bus_reset_handler,
        .slave_alloc            = lpfc_slave_alloc,
        .slave_configure        = lpfc_slave_configure,
@@ -3614,4 +3622,5 @@ struct scsi_host_template lpfc_vport_template = {
        .use_clustering         = ENABLE_CLUSTERING,
        .shost_attrs            = lpfc_vport_attrs,
        .max_sectors            = 0xFFFF,
+       .change_queue_depth     = lpfc_change_queue_depth,
 };