diff options
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc.h | 7 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 9 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_crtn.h | 12 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_disc.h | 17 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_els.c | 232 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_hbadisc.c | 4 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_hw.h | 18 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_init.c | 34 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_mem.c | 10 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.c | 82 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.c | 396 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli4.h | 1 |
13 files changed, 803 insertions, 20 deletions
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index e86a0d2add3c..746dd3d7a092 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -486,7 +486,7 @@ struct lpfc_hba { int (*lpfc_new_scsi_buf) (struct lpfc_vport *, int); struct lpfc_scsi_buf * (*lpfc_get_scsi_buf) - (struct lpfc_hba *); + (struct lpfc_hba *, struct lpfc_nodelist *); int (*lpfc_scsi_prep_dma_buf) (struct lpfc_hba *, struct lpfc_scsi_buf *); void (*lpfc_scsi_unprep_dma_buf) @@ -574,6 +574,7 @@ struct lpfc_hba { #define HBA_FIP_SUPPORT 0x800 /* FIP support in HBA */ #define HBA_AER_ENABLED 0x1000 /* AER enabled with HBA */ #define HBA_DEVLOSS_TMO 0x2000 /* HBA in devloss timeout */ +#define HBA_RRQ_ACTIVE 0x4000 /* process the rrq active list */ uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/ struct lpfc_dmabuf slim2p; @@ -623,6 +624,7 @@ struct lpfc_hba { /* HBA Config Parameters */ uint32_t cfg_ack0; uint32_t cfg_enable_npiv; + uint32_t cfg_enable_rrq; uint32_t cfg_topology; uint32_t cfg_link_speed; uint32_t cfg_cr_delay; @@ -733,6 +735,7 @@ struct lpfc_hba { uint32_t total_scsi_bufs; struct list_head lpfc_iocb_list; uint32_t total_iocbq_bufs; + struct list_head active_rrq_list; spinlock_t hbalock; /* pci_mem_pools */ @@ -745,6 +748,7 @@ struct lpfc_hba { mempool_t *mbox_mem_pool; mempool_t *nlp_mem_pool; + mempool_t *rrq_pool; struct fc_host_statistics link_stats; enum intr_type_t intr_type; @@ -801,6 +805,7 @@ struct lpfc_hba { unsigned long skipped_hb; struct timer_list hb_tmofunc; uint8_t hb_outstanding; + struct timer_list rrq_tmr; enum hba_temp_state over_temp_state; /* ndlp reference management */ spinlock_t ndlp_lock; diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index 45bd72a9f60e..6be942ae8a07 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -1977,6 +1977,13 @@ lpfc_param_show(enable_npiv); lpfc_param_init(enable_npiv, 1, 0, 1); static DEVICE_ATTR(lpfc_enable_npiv, S_IRUGO, lpfc_enable_npiv_show, NULL); +int lpfc_enable_rrq; +module_param(lpfc_enable_rrq, int, 0); +MODULE_PARM_DESC(lpfc_enable_rrq, "Enable RRQ functionality"); +lpfc_param_show(enable_rrq); +lpfc_param_init(enable_rrq, 0, 0, 1); +static DEVICE_ATTR(lpfc_enable_rrq, S_IRUGO, lpfc_enable_rrq_show, NULL); + /* # lpfc_suppress_link_up: Bring link up at initialization # 0x0 = bring link up (issue MBX_INIT_LINK) @@ -3394,6 +3401,7 @@ struct device_attribute *lpfc_hba_attrs[] = { &dev_attr_lpfc_fdmi_on, &dev_attr_lpfc_max_luns, &dev_attr_lpfc_enable_npiv, + &dev_attr_lpfc_enable_rrq, &dev_attr_nport_evt_cnt, &dev_attr_board_mode, &dev_attr_max_vpi, @@ -4610,6 +4618,7 @@ lpfc_get_cfgparam(struct lpfc_hba *phba) lpfc_link_speed_init(phba, lpfc_link_speed); lpfc_poll_tmo_init(phba, lpfc_poll_tmo); lpfc_enable_npiv_init(phba, lpfc_enable_npiv); + lpfc_enable_rrq_init(phba, lpfc_enable_rrq); lpfc_use_msi_init(phba, lpfc_use_msi); lpfc_fcp_imax_init(phba, lpfc_fcp_imax); lpfc_fcp_wq_count_init(phba, lpfc_fcp_wq_count); diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h index 1ea3075e3c5d..9b95c50ba704 100644 --- a/drivers/scsi/lpfc/lpfc_crtn.h +++ b/drivers/scsi/lpfc/lpfc_crtn.h @@ -416,5 +416,13 @@ struct lpfc_iocbq *lpfc_sli_ringtx_get(struct lpfc_hba *, int __lpfc_sli_issue_iocb(struct lpfc_hba *, uint32_t, struct lpfc_iocbq *, uint32_t); uint32_t lpfc_drain_txq(struct lpfc_hba *); - - +void lpfc_clr_rrq_active(struct lpfc_hba *, uint16_t, struct lpfc_node_rrq *); +int lpfc_test_rrq_active(struct lpfc_hba *, struct lpfc_nodelist *, uint16_t); +void lpfc_handle_rrq_active(struct lpfc_hba *); +int lpfc_send_rrq(struct lpfc_hba *, struct lpfc_node_rrq *); +int lpfc_set_rrq_active(struct lpfc_hba *, struct lpfc_nodelist *, + uint16_t, uint16_t, uint16_t); +void lpfc_cleanup_wt_rrqs(struct lpfc_hba *); +void lpfc_cleanup_vports_rrqs(struct lpfc_vport *); +struct lpfc_node_rrq *lpfc_get_active_rrq(struct lpfc_vport *, uint16_t, + uint32_t); diff --git a/drivers/scsi/lpfc/lpfc_disc.h b/drivers/scsi/lpfc/lpfc_disc.h index 7cae69de36f7..2f73252d15f0 100644 --- a/drivers/scsi/lpfc/lpfc_disc.h +++ b/drivers/scsi/lpfc/lpfc_disc.h @@ -68,6 +68,12 @@ struct lpfc_fast_path_event { } un; }; +#define LPFC_SLI4_MAX_XRI 1024 /* Used to make the ndlp's xri_bitmap */ +#define XRI_BITMAP_ULONGS (LPFC_SLI4_MAX_XRI / BITS_PER_LONG) +struct lpfc_node_rrqs { + unsigned long xri_bitmap[XRI_BITMAP_ULONGS]; +}; + struct lpfc_nodelist { struct list_head nlp_listp; struct lpfc_name nlp_portname; @@ -110,8 +116,19 @@ struct lpfc_nodelist { atomic_t cmd_pending; uint32_t cmd_qdepth; unsigned long last_change_time; + struct lpfc_node_rrqs active_rrqs; struct lpfc_scsicmd_bkt *lat_data; /* Latency data */ }; +struct lpfc_node_rrq { + struct list_head list; + uint16_t xritag; + uint16_t send_rrq; + uint16_t rxid; + uint32_t nlp_DID; /* FC D_ID of entry */ + struct lpfc_vport *vport; + struct lpfc_nodelist *ndlp; + unsigned long rrq_stop_time; +}; /* Defines for nlp_flag (uint32) */ #define NLP_IGNR_REG_CMPL 0x00000001 /* Rcvd rscn before we cmpl reg login */ diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index 04072ce9c905..0705ad86538f 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -1290,6 +1290,7 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, uint32_t rc, keepDID = 0; int put_node; int put_rport; + struct lpfc_node_rrqs rrq; /* Fabric nodes can have the same WWPN so we don't bother searching * by WWPN. Just return the ndlp that was given to us. @@ -1307,6 +1308,7 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp)) return ndlp; + memset(&rrq.xri_bitmap, 0, sizeof(new_ndlp->active_rrqs.xri_bitmap)); if (!new_ndlp) { rc = memcmp(&ndlp->nlp_portname, name, @@ -1327,12 +1329,25 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, if (!new_ndlp) return ndlp; keepDID = new_ndlp->nlp_DID; - } else + if (phba->sli_rev == LPFC_SLI_REV4) + memcpy(&rrq.xri_bitmap, + &new_ndlp->active_rrqs.xri_bitmap, + sizeof(new_ndlp->active_rrqs.xri_bitmap)); + } else { keepDID = new_ndlp->nlp_DID; + if (phba->sli_rev == LPFC_SLI_REV4) + memcpy(&rrq.xri_bitmap, + &new_ndlp->active_rrqs.xri_bitmap, + sizeof(new_ndlp->active_rrqs.xri_bitmap)); + } lpfc_unreg_rpi(vport, new_ndlp); new_ndlp->nlp_DID = ndlp->nlp_DID; new_ndlp->nlp_prev_state = ndlp->nlp_prev_state; + if (phba->sli_rev == LPFC_SLI_REV4) + memcpy(new_ndlp->active_rrqs.xri_bitmap, + &ndlp->active_rrqs.xri_bitmap, + sizeof(ndlp->active_rrqs.xri_bitmap)); if (ndlp->nlp_flag & NLP_NPR_2B_DISC) new_ndlp->nlp_flag |= NLP_NPR_2B_DISC; @@ -1371,12 +1386,20 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, /* Two ndlps cannot have the same did on the nodelist */ ndlp->nlp_DID = keepDID; + if (phba->sli_rev == LPFC_SLI_REV4) + memcpy(&ndlp->active_rrqs.xri_bitmap, + &rrq.xri_bitmap, + sizeof(ndlp->active_rrqs.xri_bitmap)); lpfc_drop_node(vport, ndlp); } else { lpfc_unreg_rpi(vport, ndlp); /* Two ndlps cannot have the same did */ ndlp->nlp_DID = keepDID; + if (phba->sli_rev == LPFC_SLI_REV4) + memcpy(&ndlp->active_rrqs.xri_bitmap, + &rrq.xri_bitmap, + sizeof(ndlp->active_rrqs.xri_bitmap)); lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); /* Since we are swapping the ndlp passed in with the new one * and the did has already been swapped, copy over the @@ -1437,6 +1460,73 @@ lpfc_end_rscn(struct lpfc_vport *vport) } /** + * lpfc_cmpl_els_rrq - Completion handled for els RRQs. + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine will call the clear rrq function to free the rrq and + * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not + * exist then the clear_rrq is still called because the rrq needs to + * be freed. + **/ + +static void +lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + IOCB_t *irsp; + struct lpfc_nodelist *ndlp; + struct lpfc_node_rrq *rrq; + + /* we pass cmdiocb to state machine which needs rspiocb as well */ + rrq = cmdiocb->context_un.rrq; + cmdiocb->context_un.rsp_iocb = rspiocb; + + irsp = &rspiocb->iocb; + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "RRQ cmpl: status:x%x/x%x did:x%x", + irsp->ulpStatus, irsp->un.ulpWord[4], + irsp->un.elsreq64.remoteID); + + ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID); + if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || ndlp != rrq->ndlp) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, + "2882 RRQ completes to NPort x%x " + "with no ndlp. Data: x%x x%x x%x\n", + irsp->un.elsreq64.remoteID, + irsp->ulpStatus, irsp->un.ulpWord[4], + irsp->ulpIoTag); + goto out; + } + + /* rrq completes to NPort <nlp_DID> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "2880 RRQ completes to NPort x%x " + "Data: x%x x%x x%x x%x x%x\n", + ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], + irsp->ulpTimeout, rrq->xritag, rrq->rxid); + + if (irsp->ulpStatus) { + /* Check for retry */ + /* RRQ failed Don't print the vport to vport rjts */ + if (irsp->ulpStatus != IOSTAT_LS_RJT || + (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) && + ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) || + (phba)->pport->cfg_log_verbose & LOG_ELS) + lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, + "2881 RRQ failure DID:%06X Status:x%x/x%x\n", + ndlp->nlp_DID, irsp->ulpStatus, + irsp->un.ulpWord[4]); + } +out: + if (rrq) + lpfc_clr_rrq_active(phba, rrq->xritag, rrq); + lpfc_els_free_iocb(phba, cmdiocb); + return; +} +/** * lpfc_cmpl_els_plogi - Completion callback function for plogi * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. @@ -3913,6 +4003,47 @@ lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format, } /** + * lpfc_els_clear_rrq - Clear the rq that this rrq describes. + * @vport: pointer to a virtual N_Port data structure. + * @iocb: pointer to the lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * Return + **/ +static void +lpfc_els_clear_rrq(struct lpfc_vport *vport, + struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba = vport->phba; + uint8_t *pcmd; + struct RRQ *rrq; + uint16_t rxid; + struct lpfc_node_rrq *prrq; + + + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) iocb->context2)->virt); + pcmd += sizeof(uint32_t); + rrq = (struct RRQ *)pcmd; + rxid = bf_get(rrq_oxid, rrq); + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x" + " x%x x%x\n", + bf_get(rrq_did, rrq), + bf_get(rrq_oxid, rrq), + rxid, + iocb->iotag, iocb->iocb.ulpContext); + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "Clear RRQ: did:x%x flg:x%x exchg:x%.08x", + ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg); + prrq = lpfc_get_active_rrq(vport, rxid, ndlp->nlp_DID); + if (prrq) + lpfc_clr_rrq_active(phba, rxid, prrq); + return; +} + +/** * lpfc_els_rsp_echo_acc - Issue echo acc response * @vport: pointer to a virtual N_Port data structure. * @data: pointer to echo data to return in the accept. @@ -4801,6 +4932,8 @@ lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); + if (vport->phba->sli_rev == LPFC_SLI_REV4) + lpfc_els_clear_rrq(vport, cmdiocb, ndlp); } /** @@ -5203,6 +5336,97 @@ reject_out: return 0; } +/* lpfc_issue_els_rrq - Process an unsolicited rps iocb + * @vport: pointer to a host virtual N_Port data structure. + * @ndlp: pointer to a node-list data structure. + * @did: DID of the target. + * @rrq: Pointer to the rrq struct. + * + * Build a ELS RRQ command and send it to the target. If the issue_iocb is + * Successful the the completion handler will clear the RRQ. + * + * Return codes + * 0 - Successfully sent rrq els iocb. + * 1 - Failed to send rrq els iocb. + **/ +static int +lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, + uint32_t did, struct lpfc_node_rrq *rrq) +{ + struct lpfc_hba *phba = vport->phba; + struct RRQ *els_rrq; + IOCB_t *icmd; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + int ret; + + + if (ndlp != rrq->ndlp) + ndlp = rrq->ndlp; + if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) + return 1; + + /* If ndlp is not NULL, we will bump the reference count on it */ + cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ)); + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did, + ELS_CMD_RRQ); + if (!elsiocb) + return 1; + + icmd = &elsiocb->iocb; + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + /* For RRQ request, remainder of payload is Exchange IDs */ + *((uint32_t *) (pcmd)) = ELS_CMD_RRQ; + pcmd += sizeof(uint32_t); + els_rrq = (struct RRQ *) pcmd; + + bf_set(rrq_oxid, els_rrq, rrq->xritag); + bf_set(rrq_rxid, els_rrq, rrq->rxid); + bf_set(rrq_did, els_rrq, vport->fc_myDID); + els_rrq->rrq = cpu_to_be32(els_rrq->rrq); + els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg); + + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue RRQ: did:x%x", + did, rrq->xritag, rrq->rxid); + elsiocb->context_un.rrq = rrq; + elsiocb->iocb_cmpl = lpfc_cmpl_els_rrq; + ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + + if (ret == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + return 0; +} + +/** + * lpfc_send_rrq - Sends ELS RRQ if needed. + * @phba: pointer to lpfc hba data structure. + * @rrq: pointer to the active rrq. + * + * This routine will call the lpfc_issue_els_rrq if the rrq is + * still active for the xri. If this function returns a failure then + * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq. + * + * Returns 0 Success. + * 1 Failure. + **/ +int +lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq) +{ + struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport, + rrq->nlp_DID); + if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag)) + return lpfc_issue_els_rrq(rrq->vport, ndlp, + rrq->nlp_DID, rrq); + else + return 1; +} + /** * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command * @vport: pointer to a host virtual N_Port data structure. @@ -7373,8 +7597,11 @@ lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba, struct sli4_wcqe_xri_aborted *axri) { uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); + uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); + struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; unsigned long iflag = 0; + struct lpfc_nodelist *ndlp; struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; spin_lock_irqsave(&phba->hbalock, iflag); @@ -7383,11 +7610,14 @@ lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba, &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { if (sglq_entry->sli4_xritag == xri) { list_del(&sglq_entry->list); + ndlp = sglq_entry->ndlp; + sglq_entry->ndlp = NULL; list_add_tail(&sglq_entry->list, &phba->sli4_hba.lpfc_sgl_list); sglq_entry->state = SGL_FREED; spin_unlock(&phba->sli4_hba.abts_sgl_list_lock); spin_unlock_irqrestore(&phba->hbalock, iflag); + lpfc_set_rrq_active(phba, ndlp, xri, rxid, 1); /* Check if TXQ queue needs to be serviced */ if (pring->txq_cnt) diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index e8d27c958510..91fa65906173 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -607,6 +607,8 @@ lpfc_work_done(struct lpfc_hba *phba) /* Process SLI4 events */ if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { + if (phba->hba_flag & HBA_RRQ_ACTIVE) + lpfc_handle_rrq_active(phba); if (phba->hba_flag & FCP_XRI_ABORT_EVENT) lpfc_sli4_fcp_xri_abort_event_proc(phba); if (phba->hba_flag & ELS_XRI_ABORT_EVENT) @@ -966,6 +968,7 @@ lpfc_linkup(struct lpfc_hba *phba) struct lpfc_vport **vports; int i; + lpfc_cleanup_wt_rrqs(phba); phba->link_state = LPFC_LINK_UP; /* Unblock fabric iocbs if they are blocked */ @@ -3161,6 +3164,7 @@ lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) spin_unlock_irq(shost->host_lock); vport->unreg_vpi_cmpl = VPORT_OK; mempool_free(pmb, phba->mbox_mem_pool); + lpfc_cleanup_vports_rrqs(vport); /* * This shost reference might have been taken at the beginning of * lpfc_vport_delete() diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h index a253216e1f18..96ed3ba6ba95 100644 --- a/drivers/scsi/lpfc/lpfc_hw.h +++ b/drivers/scsi/lpfc/lpfc_hw.h @@ -880,6 +880,24 @@ struct RLS_RSP { /* Structure is in Big Endian format */ uint32_t crcCnt; }; +struct RRQ { /* Structure is in Big Endian format */ + uint32_t rrq; +#define rrq_rsvd_SHIFT 24 +#define rrq_rsvd_MASK 0x000000ff +#define rrq_rsvd_WORD rrq +#define rrq_did_SHIFT 0 +#define rrq_did_MASK 0x00ffffff +#define rrq_did_WORD rrq + uint32_t rrq_exchg; +#define rrq_oxid_SHIFT 16 +#define rrq_oxid_MASK 0xffff +#define rrq_oxid_WORD rrq_exchg +#define rrq_rxid_SHIFT 0 +#define rrq_rxid_MASK 0xffff +#define rrq_rxid_WORD rrq_exchg +}; + + struct RTV_RSP { /* Structure is in Big Endian format */ uint32_t ratov; uint32_t edtov; diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 432afc7db1cc..70ba1895b0a1 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -930,6 +930,35 @@ lpfc_hb_timeout(unsigned long ptr) } /** + * lpfc_rrq_timeout - The RRQ-timer timeout handler + * @ptr: unsigned long holds the pointer to lpfc hba data structure. + * + * This is the RRQ-timer timeout handler registered to the lpfc driver. When + * this timer fires, a RRQ timeout event shall be posted to the lpfc driver + * work-port-events bitmap and the worker thread is notified. This timeout + * event will be used by the worker thread to invoke the actual timeout + * handler routine, lpfc_rrq_handler. Any periodical operations will + * be performed in the timeout handler and the RRQ timeout event bit shall + * be cleared by the worker thread after it has taken the event bitmap out. + **/ +static void +lpfc_rrq_timeout(unsigned long ptr) +{ + struct lpfc_hba *phba; + uint32_t tmo_posted; + unsigned long iflag; + + phba = (struct lpfc_hba *)ptr; + spin_lock_irqsave(&phba->pport->work_port_lock, iflag); + tmo_posted = phba->hba_flag & HBA_RRQ_ACTIVE; + if (!tmo_posted) + phba->hba_flag |= HBA_RRQ_ACTIVE; + spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag); + if (!tmo_posted) + lpfc_worker_wake_up(phba); +} + +/** * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function * @phba: pointer to lpfc hba data structure. * @pmboxq: pointer to the driver internal queue element for mailbox command. @@ -3990,6 +4019,9 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba) init_timer(&phba->hb_tmofunc); phba->hb_tmofunc.function = lpfc_hb_timeout; phba->hb_tmofunc.data = (unsigned long)phba; + init_timer(&phba->rrq_tmr); + phba->rrq_tmr.function = lpfc_rrq_timeout; + phba->rrq_tmr.data = (unsigned long)phba; psli = &phba->sli; /* MBOX heartbeat timer */ @@ -8192,6 +8224,8 @@ lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid) goto out_unset_driver_resource_s4; } + INIT_LIST_HEAD(&phba->active_rrq_list); + /* Set up common device driver resources */ error = lpfc_setup_driver_resource_phase2(phba); if (error) { diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c index 8f879e477e9d..cbb48ee8b0bb 100644 --- a/drivers/scsi/lpfc/lpfc_mem.c +++ b/drivers/scsi/lpfc/lpfc_mem.c @@ -113,11 +113,16 @@ lpfc_mem_alloc(struct lpfc_hba *phba, int align) goto fail_free_mbox_pool; if (phba->sli_rev == LPFC_SLI_REV4) { + phba->rrq_pool = + mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, + sizeof(struct lpfc_node_rrq)); + if (!phba->rrq_pool) + goto fail_free_nlp_mem_pool; phba->lpfc_hrb_pool = pci_pool_create("lpfc_hrb_pool", phba->pcidev, LPFC_HDR_BUF_SIZE, align, 0); if (!phba->lpfc_hrb_pool) - goto fail_free_nlp_mem_pool; + goto fail_free_rrq_mem_pool; phba->lpfc_drb_pool = pci_pool_create("lpfc_drb_pool", phba->pcidev, @@ -147,6 +152,9 @@ lpfc_mem_alloc(struct lpfc_hba *phba, int align) fail_free_hrb_pool: pci_pool_destroy(phba->lpfc_hrb_pool); phba->lpfc_hrb_pool = NULL; + fail_free_rrq_mem_pool: + mempool_destroy(phba->rrq_pool); + phba->rrq_pool = NULL; fail_free_nlp_mem_pool: mempool_destroy(phba->nlp_mem_pool); phba->nlp_mem_pool = NULL; diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 581837b3c71a..c97751c95d77 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -621,10 +621,13 @@ lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba, struct sli4_wcqe_xri_aborted *axri) { uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); + uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); struct lpfc_scsi_buf *psb, *next_psb; unsigned long iflag = 0; struct lpfc_iocbq *iocbq; int i; + struct lpfc_nodelist *ndlp; + int rrq_empty = 0; struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; spin_lock_irqsave(&phba->hbalock, iflag); @@ -637,8 +640,14 @@ lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba, psb->status = IOSTAT_SUCCESS; spin_unlock( &phba->sli4_hba.abts_scsi_buf_list_lock); + ndlp = psb->rdata->pnode; + rrq_empty = list_empty(&phba->active_rrq_list); spin_unlock_irqrestore(&phba->hbalock, iflag); + if (ndlp) + lpfc_set_rrq_active(phba, ndlp, xri, rxid, 1); lpfc_release_scsi_buf_s4(phba, psb); + if (rrq_empty) + lpfc_worker_wake_up(phba); return; } } @@ -914,7 +923,7 @@ lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc) } /** - * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA + * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA * @phba: The HBA for which this call is being executed. * * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list @@ -925,7 +934,7 @@ lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc) * Pointer to lpfc_scsi_buf - Success **/ static struct lpfc_scsi_buf* -lpfc_get_scsi_buf(struct lpfc_hba * phba) +lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) { struct lpfc_scsi_buf * lpfc_cmd = NULL; struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; @@ -941,6 +950,67 @@ lpfc_get_scsi_buf(struct lpfc_hba * phba) spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); return lpfc_cmd; } +/** + * lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA + * @phba: The HBA for which this call is being executed. + * + * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list + * and returns to caller. + * + * Return codes: + * NULL - Error + * Pointer to lpfc_scsi_buf - Success + **/ +static struct lpfc_scsi_buf* +lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) +{ + struct lpfc_scsi_buf *lpfc_cmd = NULL; + struct lpfc_scsi_buf *start_lpfc_cmd = NULL; + struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; + unsigned long iflag = 0; + int found = 0; + + spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); + list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); + spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); + while (!found && lpfc_cmd) { + if (lpfc_test_rrq_active(phba, ndlp, + lpfc_cmd->cur_iocbq.sli4_xritag)) { + lpfc_release_scsi_buf_s4(phba, lpfc_cmd); + spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); + list_remove_head(scsi_buf_list, lpfc_cmd, + struct lpfc_scsi_buf, list); + spin_unlock_irqrestore(&phba->scsi_buf_list_lock, + iflag); + if (lpfc_cmd == start_lpfc_cmd) { + lpfc_cmd = NULL; + break; + } else + continue; + } + found = 1; + lpfc_cmd->seg_cnt = 0; + lpfc_cmd->nonsg_phys = 0; + lpfc_cmd->prot_seg_cnt = 0; + } + return lpfc_cmd; +} +/** + * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA + * @phba: The HBA for which this call is being executed. + * + * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list + * and returns to caller. + * + * Return codes: + * NULL - Error + * Pointer to lpfc_scsi_buf - Success + **/ +static struct lpfc_scsi_buf* +lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) +{ + return phba->lpfc_get_scsi_buf(phba, ndlp); +} /** * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list @@ -2744,18 +2814,19 @@ 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_release_scsi_buf = lpfc_release_scsi_buf_s3; + phba->lpfc_get_scsi_buf = lpfc_get_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_release_scsi_buf = lpfc_release_scsi_buf_s4; + phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4; break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, @@ -2764,7 +2835,6 @@ lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) return -ENODEV; break; } - 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; @@ -2940,7 +3010,7 @@ lpfc_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) goto out_host_busy; - lpfc_cmd = lpfc_get_scsi_buf(phba); + lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp); if (lpfc_cmd == NULL) { lpfc_rampdown_queue_depth(phba); @@ -3239,7 +3309,7 @@ lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata, if (!pnode || !NLP_CHK_NODE_ACT(pnode)) return FAILED; - lpfc_cmd = lpfc_get_scsi_buf(phba); + lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode); if (lpfc_cmd == NULL) return FAILED; lpfc_cmd->timeout = 60; diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index bedaa4e7cbf8..752601509549 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -513,8 +513,344 @@ __lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag) } /** + * __lpfc_set_rrq_active - set RRQ active bit in the ndlp's xri_bitmap. + * @phba: Pointer to HBA context object. + * @ndlp: nodelist pointer for this target. + * @xritag: xri used in this exchange. + * @rxid: Remote Exchange ID. + * @send_rrq: Flag used to determine if we should send rrq els cmd. + * + * This function is called with hbalock held. + * The active bit is set in the ndlp's active rrq xri_bitmap. Allocates an + * rrq struct and adds it to the active_rrq_list. + * + * returns 0 for rrq slot for this xri + * < 0 Were not able to get rrq mem or invalid parameter. + **/ +static int +__lpfc_set_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, + uint16_t xritag, uint16_t rxid, uint16_t send_rrq) +{ + uint16_t adj_xri; + struct lpfc_node_rrq *rrq; + int empty; + + /* + * set the active bit even if there is no mem available. + */ + adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base; + if (!ndlp) + return -EINVAL; + if (test_and_set_bit(adj_xri, ndlp->active_rrqs.xri_bitmap)) + return -EINVAL; + rrq = mempool_alloc(phba->rrq_pool, GFP_KERNEL); + if (rrq) { + rrq->send_rrq = send_rrq; + rrq->xritag = xritag; + rrq->rrq_stop_time = jiffies + HZ * (phba->fc_ratov + 1); + rrq->ndlp = ndlp; + rrq->nlp_DID = ndlp->nlp_DID; + rrq->vport = ndlp->vport; + rrq->rxid = rxid; + empty = list_empty(&phba->active_rrq_list); + if (phba->cfg_enable_rrq && send_rrq) + /* + * We need the xri before we can add this to the + * phba active rrq list. + */ + rrq->send_rrq = send_rrq; + else + rrq->send_rrq = 0; + list_add_tail(&rrq->list, &phba->active_rrq_list); + if (!(phba->hba_flag & HBA_RRQ_ACTIVE)) { + phba->hba_flag |= HBA_RRQ_ACTIVE; + if (empty) + lpfc_worker_wake_up(phba); + } + return 0; + } + return -ENOMEM; +} + +/** + * __lpfc_clr_rrq_active - Clears RRQ active bit in xri_bitmap. + * @phba: Pointer to HBA context object. + * @xritag: xri used in this exchange. + * @rrq: The RRQ to be cleared. + * + * This function is called with hbalock held. This function + **/ +static void +__lpfc_clr_rrq_active(struct lpfc_hba *phba, + uint16_t xritag, + struct lpfc_node_rrq *rrq) +{ + uint16_t adj_xri; + struct lpfc_nodelist *ndlp; + + ndlp = lpfc_findnode_did(rrq->vport, rrq->nlp_DID); + + /* The target DID could have been swapped (cable swap) + * we should use the ndlp from the findnode if it is + * available. + */ + if (!ndlp) + ndlp = rrq->ndlp; + + adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base; + if (test_and_clear_bit(adj_xri, ndlp->active_rrqs.xri_bitmap)) { + rrq->send_rrq = 0; + rrq->xritag = 0; + rrq->rrq_stop_time = 0; + } + mempool_free(rrq, phba->rrq_pool); +} + +/** + * lpfc_handle_rrq_active - Checks if RRQ has waithed RATOV. + * @phba: Pointer to HBA context object. + * + * This function is called with hbalock held. This function + * Checks if stop_time (ratov from setting rrq active) has + * been reached, if it has and the send_rrq flag is set then + * it will call lpfc_send_rrq. If the send_rrq flag is not set + * then it will just call the routine to clear the rrq and + * free the rrq resource. + * The timer is set to the next rrq that is going to expire before + * leaving the routine. + * + **/ +void +lpfc_handle_rrq_active(struct lpfc_hba *phba) +{ + struct lpfc_node_rrq *rrq; + struct lpfc_node_rrq *nextrrq; + unsigned long next_time; + unsigned long iflags; + + spin_lock_irqsave(&phba->hbalock, iflags); + phba->hba_flag &= ~HBA_RRQ_ACTIVE; + next_time = jiffies + HZ * (phba->fc_ratov + 1); + list_for_each_entry_safe(rrq, nextrrq, + &phba->active_rrq_list, list) { + if (time_after(jiffies, rrq->rrq_stop_time)) { + list_del(&rrq->list); + if (!rrq->send_rrq) + /* this call will free the rrq */ + __lpfc_clr_rrq_active(phba, rrq->xritag, rrq); + else { + /* if we send the rrq then the completion handler + * will clear the bit in the xribitmap. + */ + spin_unlock_irqrestore(&phba->hbalock, iflags); + if (lpfc_send_rrq(phba, rrq)) { + lpfc_clr_rrq_active(phba, rrq->xritag, + rrq); + } + spin_lock_irqsave(&phba->hbalock, iflags); + } + } else if (time_before(rrq->rrq_stop_time, next_time)) + next_time = rrq->rrq_stop_time; + } + spin_unlock_irqrestore(&phba->hbalock, iflags); + if (!list_empty(&phba->active_rrq_list)) + mod_timer(&phba->rrq_tmr, next_time); +} + +/** + * lpfc_get_active_rrq - Get the active RRQ for this exchange. + * @vport: Pointer to vport context object. + * @xri: The xri used in the exchange. + * @did: The targets DID for this exchange. + * + * returns NULL = rrq not found in the phba->active_rrq_list. + * rrq = rrq for this xri and target. + **/ +struct lpfc_node_rrq * +lpfc_get_active_rrq(struct lpfc_vport *vport, uint16_t xri, uint32_t did) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_node_rrq *rrq; + struct lpfc_node_rrq *nextrrq; + unsigned long iflags; + + if (phba->sli_rev != LPFC_SLI_REV4) + return NULL; + spin_lock_irqsave(&phba->hbalock, iflags); + list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) { + if (rrq->vport == vport && rrq->xritag == xri && + rrq->nlp_DID == did){ + list_del(&rrq->list); + spin_unlock_irqrestore(&phba->hbalock, iflags); + return rrq; + } + } + spin_unlock_irqrestore(&phba->hbalock, iflags); + return NULL; +} + +/** + * lpfc_cleanup_vports_rrqs - Remove and clear the active RRQ for this vport. + * @vport: Pointer to vport context object. + * + * Remove all active RRQs for this vport from the phba->active_rrq_list and + * clear the rrq. + **/ +void +lpfc_cleanup_vports_rrqs(struct lpfc_vport *vport) + +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_node_rrq *rrq; + struct lpfc_node_rrq *nextrrq; + unsigned long iflags; + + if (phba->sli_rev != LPFC_SLI_REV4) + return; + spin_lock_irqsave(&phba->hbalock, iflags); + list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) { + if (rrq->vport == vport) { + list_del(&rrq->list); + __lpfc_clr_rrq_active(phba, rrq->xritag, rrq); + } + } + spin_unlock_irqrestore(&phba->hbalock, iflags); +} + +/** + * lpfc_cleanup_wt_rrqs - Remove all rrq's from the active list. + * @phba: Pointer to HBA context object. + * + * Remove all rrqs from the phba->active_rrq_list and free them by + * calling __lpfc_clr_active_rrq + * + **/ +void +lpfc_cleanup_wt_rrqs(struct lpfc_hba *phba) +{ + struct lpfc_node_rrq *rrq; + struct lpfc_node_rrq *nextrrq; + unsigned long next_time; + unsigned long iflags; + + if (phba->sli_rev != LPFC_SLI_REV4) + return; + spin_lock_irqsave(&phba->hbalock, iflags); + phba->hba_flag &= ~HBA_RRQ_ACTIVE; + next_time = jiffies + HZ * (phba->fc_ratov * 2); + list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) { + list_del(&rrq->list); + __lpfc_clr_rrq_active(phba, rrq->xritag, rrq); + } + spin_unlock_irqrestore(&phba->hbalock, iflags); + if (!list_empty(&phba->active_rrq_list)) + mod_timer(&phba->rrq_tmr, next_time); +} + + +/** + * __lpfc_test_rrq_active - Test RRQ bit in xri_bitmap. + * @phba: Pointer to HBA context object. + * @ndlp: Targets nodelist pointer for this exchange. + * @xritag the xri in the bitmap to test. + * + * This function is called with hbalock held. This function + * returns 0 = rrq not active for this xri + * 1 = rrq is valid for this xri. + **/ +static int +__lpfc_test_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, + uint16_t xritag) +{ + uint16_t adj_xri; + + adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base; + if (!ndlp) + return 0; + if (test_bit(adj_xri, ndlp->active_rrqs.xri_bitmap)) + return 1; + else + return 0; +} + +/** + * lpfc_set_rrq_active - set RRQ active bit in xri_bitmap. + * @phba: Pointer to HBA context object. + * @ndlp: nodelist pointer for this target. + * @xritag: xri used in this exchange. + * @rxid: Remote Exchange ID. + * @send_rrq: Flag used to determine if we should send rrq els cmd. + * + * This function takes the hbalock. + * The active bit is always set in the active rrq xri_bitmap even + * if there is no slot avaiable for the other rrq information. + * + * returns 0 rrq actived for this xri + * < 0 No memory or invalid ndlp. + **/ +int +lpfc_set_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, + uint16_t xritag, uint16_t rxid, uint16_t send_rrq) +{ + int ret; + unsigned long iflags; + + spin_lock_irqsave(&phba->hbalock, iflags); + ret = __lpfc_set_rrq_active(phba, ndlp, xritag, rxid, send_rrq); + spin_unlock_irqrestore(&phba->hbalock, iflags); + return ret; +} + +/** + * lpfc_clr_rrq_active - Clears RRQ active bit in xri_bitmap. + * @phba: Pointer to HBA context object. + * @xritag: xri used in this exchange. + * @rrq: The RRQ to be cleared. + * + * This function is takes the hbalock. + **/ +void +lpfc_clr_rrq_active(struct lpfc_hba *phba, + uint16_t xritag, + struct lpfc_node_rrq *rrq) +{ + unsigned long iflags; + + spin_lock_irqsave(&phba->hbalock, iflags); + __lpfc_clr_rrq_active(phba, xritag, rrq); + spin_unlock_irqrestore(&phba->hbalock, iflags); + return; +} + + + +/** + * lpfc_test_rrq_active - Test RRQ bit in xri_bitmap. + * @phba: Pointer to HBA context object. + * @ndlp: Targets nodelist pointer for this exchange. + * @xritag the xri in the bitmap to test. + * + * This function takes the hbalock. + * returns 0 = rrq not active for this xri + * 1 = rrq is valid for this xri. + **/ +int +lpfc_test_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, + uint16_t xritag) +{ + int ret; + unsigned long iflags; + + spin_lock_irqsave(&phba->hbalock, iflags); + ret = __lpfc_test_rrq_active(phba, ndlp, xritag); + spin_unlock_irqrestore(&phba->hbalock, iflags); + return ret; +} + +/** * __lpfc_sli_get_sglq - Allocates an iocb object from sgl pool * @phba: Pointer to HBA context object. + * @piocb: Pointer to the iocbq. * * This function is called with hbalock held. This function * Gets a new driver sglq object from the sglq list. If the @@ -522,17 +858,53 @@ __lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag) * allocated sglq object else it returns NULL. **/ static struct lpfc_sglq * -__lpfc_sli_get_sglq(struct lpfc_hba *phba) +__lpfc_sli_get_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq) { struct list_head *lpfc_sgl_list = &phba->sli4_hba.lpfc_sgl_list; struct lpfc_sglq *sglq = NULL; + struct lpfc_sglq *start_sglq = NULL; uint16_t adj_xri; + struct lpfc_scsi_buf *lpfc_cmd; + struct lpfc_nodelist *ndlp; + int found = 0; + + if (piocbq->iocb_flag & LPFC_IO_FCP) { + lpfc_cmd = (struct lpfc_scsi_buf *) piocbq->context1; + ndlp = lpfc_cmd->rdata->pnode; + } else if (piocbq->iocb.ulpCommand == CMD_GEN_REQUEST64_CR) + ndlp = piocbq->context_un.ndlp; + else if (piocbq->iocb.ulpCommand == CMD_XMIT_BLS_RSP64_CX) + ndlp = lpfc_findnode_did(piocbq->vport, + piocbq->iocb.ulpContext); + else + ndlp = piocbq->context1; + list_remove_head(lpfc_sgl_list, sglq, struct lpfc_sglq, list); - if (!sglq) - return NULL; - adj_xri = sglq->sli4_xritag - phba->sli4_hba.max_cfg_param.xri_base; - phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = sglq; - sglq->state = SGL_ALLOCATED; + start_sglq = sglq; + while (!found) { + if (!sglq) + return NULL; + adj_xri = sglq->sli4_xritag - + phba->sli4_hba.max_cfg_param.xri_base; + if (__lpfc_test_rrq_active(phba, ndlp, sglq->sli4_xritag)) { + /* This xri has an rrq outstanding for this DID. + * put it back in the list and get another xri. + */ + list_add_tail(&sglq->list, lpfc_sgl_list); + sglq = NULL; + list_remove_head(lpfc_sgl_list, sglq, + struct lpfc_sglq, list); + if (sglq == start_sglq) { + sglq = NULL; + break; + } else + continue; + } + sglq->ndlp = ndlp; + found = 1; + phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = sglq; + sglq->state = SGL_ALLOCATED; + } return sglq; } @@ -598,6 +970,7 @@ __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) &phba->sli4_hba.abts_sgl_list_lock, iflag); } else { sglq->state = SGL_FREED; + sglq->ndlp = NULL; list_add(&sglq->list, &phba->sli4_hba.lpfc_sgl_list); /* Check if TXQ queue needs to be serviced */ @@ -6352,7 +6725,7 @@ __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number, return IOCB_BUSY; } } else { - sglq = __lpfc_sli_get_sglq(phba); + sglq = __lpfc_sli_get_sglq(phba, piocb); if (!sglq) { if (!(flag & SLI_IOCB_RET_IOCB)) { __lpfc_sli_ringtx_put(phba, @@ -11570,6 +11943,10 @@ lpfc_sli4_seq_abort_acc(struct lpfc_hba *phba, "SID:x%x\n", oxid, sid); return; } + if (rxid >= phba->sli4_hba.max_cfg_param.xri_base + && rxid <= (phba->sli4_hba.max_cfg_param.max_xri + + phba->sli4_hba.max_cfg_param.xri_base)) + lpfc_set_rrq_active(phba, ndlp, rxid, oxid, 0); /* Allocate buffer for acc iocb */ ctiocb = lpfc_sli_get_iocbq(phba); @@ -13008,12 +13385,13 @@ lpfc_drain_txq(struct lpfc_hba *phba) while (pring->txq_cnt) { spin_lock_irqsave(&phba->hbalock, iflags); - sglq = __lpfc_sli_get_sglq(phba); + piocbq = lpfc_sli_ringtx_get(phba, pring); + sglq = __lpfc_sli_get_sglq(phba, piocbq); if (!sglq) { + __lpfc_sli_ringtx_put(phba, pring, piocbq); spin_unlock_irqrestore(&phba->hbalock, iflags); break; } else { - piocbq = lpfc_sli_ringtx_get(phba, pring); if (!piocbq) { /* The txq_cnt out of sync. This should * never happen diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h index cd56d6cce6c3..402a0737076c 100644 --- a/drivers/scsi/lpfc/lpfc_sli.h +++ b/drivers/scsi/lpfc/lpfc_sli.h @@ -82,6 +82,7 @@ struct lpfc_iocbq { struct lpfc_iocbq *rsp_iocb; struct lpfcMboxq *mbox; struct lpfc_nodelist *ndlp; + struct lpfc_node_rrq *rrq; } context_un; void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index bc30fcf3f804..8ced5983d3e3 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -466,6 +466,7 @@ struct lpfc_sglq { struct list_head clist; enum lpfc_sge_type buff_type; /* is this a scsi sgl */ enum lpfc_sgl_state state; + struct lpfc_nodelist *ndlp; /* ndlp associated with IO */ uint16_t iotag; /* pre-assigned IO tag */ uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */ struct sli4_sge *sgl; /* pre-assigned SGL */ |