diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_init.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_init.c | 1495 |
1 files changed, 1447 insertions, 48 deletions
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index e29523a1b530..0ec322f0e3cb 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -93,6 +93,7 @@ static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t); static void lpfc_sli4_oas_verify(struct lpfc_hba *phba); static uint16_t lpfc_find_cpu_handle(struct lpfc_hba *, uint16_t, int); static void lpfc_setup_bg(struct lpfc_hba *, struct Scsi_Host *); +static int lpfc_sli4_cgn_parm_chg_evt(struct lpfc_hba *); static struct scsi_transport_template *lpfc_transport_template = NULL; static struct scsi_transport_template *lpfc_vport_transport_template = NULL; @@ -1243,7 +1244,8 @@ lpfc_idle_stat_delay_work(struct work_struct *work) return; if (phba->link_state == LPFC_HBA_ERROR || - phba->pport->fc_flag & FC_OFFLINE_MODE) + phba->pport->fc_flag & FC_OFFLINE_MODE || + phba->cmf_active_mode != LPFC_CFG_OFF) goto requeue; for_each_present_cpu(i) { @@ -1852,6 +1854,7 @@ lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action, { int rc; uint32_t intr_mode; + LPFC_MBOXQ_t *mboxq; if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >= LPFC_SLI_INTF_IF_TYPE_2) { @@ -1871,11 +1874,19 @@ lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action, "Recovery...\n"); /* If we are no wait, the HBA has been reset and is not - * functional, thus we should clear LPFC_SLI_ACTIVE flag. + * functional, thus we should clear + * (LPFC_SLI_ACTIVE | LPFC_SLI_MBOX_ACTIVE) flags. */ if (mbx_action == LPFC_MBX_NO_WAIT) { spin_lock_irq(&phba->hbalock); phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE; + if (phba->sli.mbox_active) { + mboxq = phba->sli.mbox_active; + mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED; + __lpfc_mbox_cmpl_put(phba, mboxq); + phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + phba->sli.mbox_active = NULL; + } spin_unlock_irq(&phba->hbalock); } @@ -2590,6 +2601,9 @@ lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp) case PCI_DEVICE_ID_LANCER_G7_FC: m = (typeof(m)){"LPe36000", "PCIe", "Fibre Channel Adapter"}; break; + case PCI_DEVICE_ID_LANCER_G7P_FC: + m = (typeof(m)){"LPe38000", "PCIe", "Fibre Channel Adapter"}; + break; case PCI_DEVICE_ID_SKYHAWK: case PCI_DEVICE_ID_SKYHAWK_VF: oneConnect = 1; @@ -3008,6 +3022,123 @@ lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba) } /** + * lpfc_cmf_stop - Stop CMF processing + * @phba: pointer to lpfc hba data structure. + * + * This is called when the link goes down or if CMF mode is turned OFF. + * It is also called when going offline or unloaded just before the + * congestion info buffer is unregistered. + **/ +void +lpfc_cmf_stop(struct lpfc_hba *phba) +{ + int cpu; + struct lpfc_cgn_stat *cgs; + + /* We only do something if CMF is enabled */ + if (!phba->sli4_hba.pc_sli4_params.cmf) + return; + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "6221 Stop CMF / Cancel Timer\n"); + + /* Cancel the CMF timer */ + hrtimer_cancel(&phba->cmf_timer); + + /* Zero CMF counters */ + atomic_set(&phba->cmf_busy, 0); + for_each_present_cpu(cpu) { + cgs = per_cpu_ptr(phba->cmf_stat, cpu); + atomic64_set(&cgs->total_bytes, 0); + atomic64_set(&cgs->rcv_bytes, 0); + atomic_set(&cgs->rx_io_cnt, 0); + atomic64_set(&cgs->rx_latency, 0); + } + atomic_set(&phba->cmf_bw_wait, 0); + + /* Resume any blocked IO - Queue unblock on workqueue */ + queue_work(phba->wq, &phba->unblock_request_work); +} + +static inline uint64_t +lpfc_get_max_line_rate(struct lpfc_hba *phba) +{ + uint64_t rate = lpfc_sli_port_speed_get(phba); + + return ((((unsigned long)rate) * 1024 * 1024) / 10); +} + +void +lpfc_cmf_signal_init(struct lpfc_hba *phba) +{ + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "6223 Signal CMF init\n"); + + /* Use the new fc_linkspeed to recalculate */ + phba->cmf_interval_rate = LPFC_CMF_INTERVAL; + phba->cmf_max_line_rate = lpfc_get_max_line_rate(phba); + phba->cmf_link_byte_count = div_u64(phba->cmf_max_line_rate * + phba->cmf_interval_rate, 1000); + phba->cmf_max_bytes_per_interval = phba->cmf_link_byte_count; + + /* This is a signal to firmware to sync up CMF BW with link speed */ + lpfc_issue_cmf_sync_wqe(phba, 0, 0); +} + +/** + * lpfc_cmf_start - Start CMF processing + * @phba: pointer to lpfc hba data structure. + * + * This is called when the link comes up or if CMF mode is turned OFF + * to Monitor or Managed. + **/ +void +lpfc_cmf_start(struct lpfc_hba *phba) +{ + struct lpfc_cgn_stat *cgs; + int cpu; + + /* We only do something if CMF is enabled */ + if (!phba->sli4_hba.pc_sli4_params.cmf || + phba->cmf_active_mode == LPFC_CFG_OFF) + return; + + /* Reinitialize congestion buffer info */ + lpfc_init_congestion_buf(phba); + + atomic_set(&phba->cgn_fabric_warn_cnt, 0); + atomic_set(&phba->cgn_fabric_alarm_cnt, 0); + atomic_set(&phba->cgn_sync_alarm_cnt, 0); + atomic_set(&phba->cgn_sync_warn_cnt, 0); + + atomic_set(&phba->cmf_busy, 0); + for_each_present_cpu(cpu) { + cgs = per_cpu_ptr(phba->cmf_stat, cpu); + atomic64_set(&cgs->total_bytes, 0); + atomic64_set(&cgs->rcv_bytes, 0); + atomic_set(&cgs->rx_io_cnt, 0); + atomic64_set(&cgs->rx_latency, 0); + } + phba->cmf_latency.tv_sec = 0; + phba->cmf_latency.tv_nsec = 0; + + lpfc_cmf_signal_init(phba); + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "6222 Start CMF / Timer\n"); + + phba->cmf_timer_cnt = 0; + hrtimer_start(&phba->cmf_timer, + ktime_set(0, LPFC_CMF_INTERVAL * 1000000), + HRTIMER_MODE_REL); + /* Setup for latency check in IO cmpl routines */ + ktime_get_real_ts64(&phba->cmf_latency); + + atomic_set(&phba->cmf_bw_wait, 0); + atomic_set(&phba->cmf_stop_io, 0); +} + +/** * lpfc_stop_hba_timers - Stop all the timers associated with an HBA * @phba: pointer to lpfc hba data structure. * @@ -3541,6 +3672,8 @@ lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action) spin_lock_irq(&ndlp->lock); ndlp->nlp_flag &= ~NLP_NPR_ADISC; spin_unlock_irq(&ndlp->lock); + + lpfc_unreg_rpi(vports[i], ndlp); /* * Whenever an SLI4 port goes offline, free the * RPI. Get a new RPI when the adapter port @@ -3556,7 +3689,6 @@ lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action) lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi); ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; } - lpfc_unreg_rpi(vports[i], ndlp); if (ndlp->nlp_type & NLP_FABRIC) { lpfc_disc_state_machine(vports[i], ndlp, @@ -4666,6 +4798,8 @@ static void lpfc_host_supported_speeds_set(struct Scsi_Host *shost) if (phba->hba_flag & HBA_FCOE_MODE) return; + if (phba->lmt & LMT_256Gb) + fc_host_supported_speeds(shost) |= FC_PORTSPEED_256GBIT; if (phba->lmt & LMT_128Gb) fc_host_supported_speeds(shost) |= FC_PORTSPEED_128GBIT; if (phba->lmt & LMT_64Gb) @@ -4845,7 +4979,7 @@ lpfc_sli4_fcf_redisc_wait_tmo(struct timer_list *t) /** * lpfc_vmid_poll - VMID timeout detection - * @ptr: Map to lpfc_hba data structure pointer. + * @t: Timer context used to obtain the pointer to lpfc hba data structure. * * This routine is invoked when there is no I/O on by a VM for the specified * amount of time. When this situation is detected, the VMID has to be @@ -5074,6 +5208,9 @@ lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code, case LPFC_FC_LA_SPEED_128G: port_speed = 128000; break; + case LPFC_FC_LA_SPEED_256G: + port_speed = 256000; + break; default: port_speed = 0; } @@ -5267,6 +5404,645 @@ lpfc_async_link_speed_to_read_top(struct lpfc_hba *phba, uint8_t speed_code) return port_speed; } +void +lpfc_cgn_dump_rxmonitor(struct lpfc_hba *phba) +{ + struct rxtable_entry *entry; + int cnt = 0, head, tail, last, start; + + head = atomic_read(&phba->rxtable_idx_head); + tail = atomic_read(&phba->rxtable_idx_tail); + if (!phba->rxtable || head == tail) { + lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT, + "4411 Rxtable is empty\n"); + return; + } + last = tail; + start = head; + + /* Display the last LPFC_MAX_RXMONITOR_DUMP entries from the rxtable */ + while (start != last) { + if (start) + start--; + else + start = LPFC_MAX_RXMONITOR_ENTRY - 1; + entry = &phba->rxtable[start]; + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "4410 %02d: MBPI %lld Xmit %lld Cmpl %lld " + "Lat %lld ASz %lld Info %02d BWUtil %d " + "Int %d slot %d\n", + cnt, entry->max_bytes_per_interval, + entry->total_bytes, entry->rcv_bytes, + entry->avg_io_latency, entry->avg_io_size, + entry->cmf_info, entry->timer_utilization, + entry->timer_interval, start); + cnt++; + if (cnt >= LPFC_MAX_RXMONITOR_DUMP) + return; + } +} + +/** + * lpfc_cgn_update_stat - Save data into congestion stats buffer + * @phba: pointer to lpfc hba data structure. + * @dtag: FPIN descriptor received + * + * Increment the FPIN received counter/time when it happens. + */ +void +lpfc_cgn_update_stat(struct lpfc_hba *phba, uint32_t dtag) +{ + struct lpfc_cgn_info *cp; + struct tm broken; + struct timespec64 cur_time; + u32 cnt; + u16 value; + + /* Make sure we have a congestion info buffer */ + if (!phba->cgn_i) + return; + cp = (struct lpfc_cgn_info *)phba->cgn_i->virt; + ktime_get_real_ts64(&cur_time); + time64_to_tm(cur_time.tv_sec, 0, &broken); + + /* Update congestion statistics */ + switch (dtag) { + case ELS_DTAG_LNK_INTEGRITY: + cnt = le32_to_cpu(cp->link_integ_notification); + cnt++; + cp->link_integ_notification = cpu_to_le32(cnt); + + cp->cgn_stat_lnk_month = broken.tm_mon + 1; + cp->cgn_stat_lnk_day = broken.tm_mday; + cp->cgn_stat_lnk_year = broken.tm_year - 100; + cp->cgn_stat_lnk_hour = broken.tm_hour; + cp->cgn_stat_lnk_min = broken.tm_min; + cp->cgn_stat_lnk_sec = broken.tm_sec; + break; + case ELS_DTAG_DELIVERY: + cnt = le32_to_cpu(cp->delivery_notification); + cnt++; + cp->delivery_notification = cpu_to_le32(cnt); + + cp->cgn_stat_del_month = broken.tm_mon + 1; + cp->cgn_stat_del_day = broken.tm_mday; + cp->cgn_stat_del_year = broken.tm_year - 100; + cp->cgn_stat_del_hour = broken.tm_hour; + cp->cgn_stat_del_min = broken.tm_min; + cp->cgn_stat_del_sec = broken.tm_sec; + break; + case ELS_DTAG_PEER_CONGEST: + cnt = le32_to_cpu(cp->cgn_peer_notification); + cnt++; + cp->cgn_peer_notification = cpu_to_le32(cnt); + + cp->cgn_stat_peer_month = broken.tm_mon + 1; + cp->cgn_stat_peer_day = broken.tm_mday; + cp->cgn_stat_peer_year = broken.tm_year - 100; + cp->cgn_stat_peer_hour = broken.tm_hour; + cp->cgn_stat_peer_min = broken.tm_min; + cp->cgn_stat_peer_sec = broken.tm_sec; + break; + case ELS_DTAG_CONGESTION: + cnt = le32_to_cpu(cp->cgn_notification); + cnt++; + cp->cgn_notification = cpu_to_le32(cnt); + + cp->cgn_stat_cgn_month = broken.tm_mon + 1; + cp->cgn_stat_cgn_day = broken.tm_mday; + cp->cgn_stat_cgn_year = broken.tm_year - 100; + cp->cgn_stat_cgn_hour = broken.tm_hour; + cp->cgn_stat_cgn_min = broken.tm_min; + cp->cgn_stat_cgn_sec = broken.tm_sec; + } + if (phba->cgn_fpin_frequency && + phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) { + value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency; + cp->cgn_stat_npm = cpu_to_le32(value); + } + value = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, + LPFC_CGN_CRC32_SEED); + cp->cgn_info_crc = cpu_to_le32(value); +} + +/** + * lpfc_cgn_save_evt_cnt - Save data into registered congestion buffer + * @phba: pointer to lpfc hba data structure. + * + * Save the congestion event data every minute. + * On the hour collapse all the minute data into hour data. Every day + * collapse all the hour data into daily data. Separate driver + * and fabrc congestion event counters that will be saved out + * to the registered congestion buffer every minute. + */ +static void +lpfc_cgn_save_evt_cnt(struct lpfc_hba *phba) +{ + struct lpfc_cgn_info *cp; + struct tm broken; + struct timespec64 cur_time; + uint32_t i, index; + uint16_t value, mvalue; + uint64_t bps; + uint32_t mbps; + uint32_t dvalue, wvalue, lvalue, avalue; + uint64_t latsum; + uint16_t *ptr; + uint32_t *lptr; + uint16_t *mptr; + + /* Make sure we have a congestion info buffer */ + if (!phba->cgn_i) + return; + cp = (struct lpfc_cgn_info *)phba->cgn_i->virt; + + if (time_before(jiffies, phba->cgn_evt_timestamp)) + return; + phba->cgn_evt_timestamp = jiffies + + msecs_to_jiffies(LPFC_CGN_TIMER_TO_MIN); + phba->cgn_evt_minute++; + + /* We should get to this point in the routine on 1 minute intervals */ + + ktime_get_real_ts64(&cur_time); + time64_to_tm(cur_time.tv_sec, 0, &broken); + + if (phba->cgn_fpin_frequency && + phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) { + value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency; + cp->cgn_stat_npm = cpu_to_le32(value); + } + + /* Read and clear the latency counters for this minute */ + lvalue = atomic_read(&phba->cgn_latency_evt_cnt); + latsum = atomic64_read(&phba->cgn_latency_evt); + atomic_set(&phba->cgn_latency_evt_cnt, 0); + atomic64_set(&phba->cgn_latency_evt, 0); + + /* We need to store MB/sec bandwidth in the congestion information. + * block_cnt is count of 512 byte blocks for the entire minute, + * bps will get bytes per sec before finally converting to MB/sec. + */ + bps = div_u64(phba->rx_block_cnt, LPFC_SEC_MIN) * 512; + phba->rx_block_cnt = 0; + mvalue = bps / (1024 * 1024); /* convert to MB/sec */ + + /* Every minute */ + /* cgn parameters */ + cp->cgn_info_mode = phba->cgn_p.cgn_param_mode; + cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0; + cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1; + cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2; + + /* Fill in default LUN qdepth */ + value = (uint16_t)(phba->pport->cfg_lun_queue_depth); + cp->cgn_lunq = cpu_to_le16(value); + + /* Record congestion buffer info - every minute + * cgn_driver_evt_cnt (Driver events) + * cgn_fabric_warn_cnt (Congestion Warnings) + * cgn_latency_evt_cnt / cgn_latency_evt (IO Latency) + * cgn_fabric_alarm_cnt (Congestion Alarms) + */ + index = ++cp->cgn_index_minute; + if (cp->cgn_index_minute == LPFC_MIN_HOUR) { + cp->cgn_index_minute = 0; + index = 0; + } + + /* Get the number of driver events in this sample and reset counter */ + dvalue = atomic_read(&phba->cgn_driver_evt_cnt); + atomic_set(&phba->cgn_driver_evt_cnt, 0); + + /* Get the number of warning events - FPIN and Signal for this minute */ + wvalue = 0; + if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) || + phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY || + phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) + wvalue = atomic_read(&phba->cgn_fabric_warn_cnt); + atomic_set(&phba->cgn_fabric_warn_cnt, 0); + + /* Get the number of alarm events - FPIN and Signal for this minute */ + avalue = 0; + if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) || + phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) + avalue = atomic_read(&phba->cgn_fabric_alarm_cnt); + atomic_set(&phba->cgn_fabric_alarm_cnt, 0); + + /* Collect the driver, warning, alarm and latency counts for this + * minute into the driver congestion buffer. + */ + ptr = &cp->cgn_drvr_min[index]; + value = (uint16_t)dvalue; + *ptr = cpu_to_le16(value); + + ptr = &cp->cgn_warn_min[index]; + value = (uint16_t)wvalue; + *ptr = cpu_to_le16(value); + + ptr = &cp->cgn_alarm_min[index]; + value = (uint16_t)avalue; + *ptr = cpu_to_le16(value); + + lptr = &cp->cgn_latency_min[index]; + if (lvalue) { + lvalue = (uint32_t)div_u64(latsum, lvalue); + *lptr = cpu_to_le32(lvalue); + } else { + *lptr = 0; + } + + /* Collect the bandwidth value into the driver's congesion buffer. */ + mptr = &cp->cgn_bw_min[index]; + *mptr = cpu_to_le16(mvalue); + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "2418 Congestion Info - minute (%d): %d %d %d %d %d\n", + index, dvalue, wvalue, *lptr, mvalue, avalue); + + /* Every hour */ + if ((phba->cgn_evt_minute % LPFC_MIN_HOUR) == 0) { + /* Record congestion buffer info - every hour + * Collapse all minutes into an hour + */ + index = ++cp->cgn_index_hour; + if (cp->cgn_index_hour == LPFC_HOUR_DAY) { + cp->cgn_index_hour = 0; + index = 0; + } + + dvalue = 0; + wvalue = 0; + lvalue = 0; + avalue = 0; + mvalue = 0; + mbps = 0; + for (i = 0; i < LPFC_MIN_HOUR; i++) { + dvalue += le16_to_cpu(cp->cgn_drvr_min[i]); + wvalue += le16_to_cpu(cp->cgn_warn_min[i]); + lvalue += le32_to_cpu(cp->cgn_latency_min[i]); + mbps += le16_to_cpu(cp->cgn_bw_min[i]); + avalue += le16_to_cpu(cp->cgn_alarm_min[i]); + } + if (lvalue) /* Avg of latency averages */ + lvalue /= LPFC_MIN_HOUR; + if (mbps) /* Avg of Bandwidth averages */ + mvalue = mbps / LPFC_MIN_HOUR; + + lptr = &cp->cgn_drvr_hr[index]; + *lptr = cpu_to_le32(dvalue); + lptr = &cp->cgn_warn_hr[index]; + *lptr = cpu_to_le32(wvalue); + lptr = &cp->cgn_latency_hr[index]; + *lptr = cpu_to_le32(lvalue); + mptr = &cp->cgn_bw_hr[index]; + *mptr = cpu_to_le16(mvalue); + lptr = &cp->cgn_alarm_hr[index]; + *lptr = cpu_to_le32(avalue); + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "2419 Congestion Info - hour " + "(%d): %d %d %d %d %d\n", + index, dvalue, wvalue, lvalue, mvalue, avalue); + } + + /* Every day */ + if ((phba->cgn_evt_minute % LPFC_MIN_DAY) == 0) { + /* Record congestion buffer info - every hour + * Collapse all hours into a day. Rotate days + * after LPFC_MAX_CGN_DAYS. + */ + index = ++cp->cgn_index_day; + if (cp->cgn_index_day == LPFC_MAX_CGN_DAYS) { + cp->cgn_index_day = 0; + index = 0; + } + + /* Anytime we overwrite daily index 0, after we wrap, + * we will be overwriting the oldest day, so we must + * update the congestion data start time for that day. + * That start time should have previously been saved after + * we wrote the last days worth of data. + */ + if ((phba->hba_flag & HBA_CGN_DAY_WRAP) && index == 0) { + time64_to_tm(phba->cgn_daily_ts.tv_sec, 0, &broken); + + cp->cgn_info_month = broken.tm_mon + 1; + cp->cgn_info_day = broken.tm_mday; + cp->cgn_info_year = broken.tm_year - 100; + cp->cgn_info_hour = broken.tm_hour; + cp->cgn_info_minute = broken.tm_min; + cp->cgn_info_second = broken.tm_sec; + + lpfc_printf_log + (phba, KERN_INFO, LOG_CGN_MGMT, + "2646 CGNInfo idx0 Start Time: " + "%d/%d/%d %d:%d:%d\n", + cp->cgn_info_day, cp->cgn_info_month, + cp->cgn_info_year, cp->cgn_info_hour, + cp->cgn_info_minute, cp->cgn_info_second); + } + + dvalue = 0; + wvalue = 0; + lvalue = 0; + mvalue = 0; + mbps = 0; + avalue = 0; + for (i = 0; i < LPFC_HOUR_DAY; i++) { + dvalue += le32_to_cpu(cp->cgn_drvr_hr[i]); + wvalue += le32_to_cpu(cp->cgn_warn_hr[i]); + lvalue += le32_to_cpu(cp->cgn_latency_hr[i]); + mbps += le32_to_cpu(cp->cgn_bw_hr[i]); + avalue += le32_to_cpu(cp->cgn_alarm_hr[i]); + } + if (lvalue) /* Avg of latency averages */ + lvalue /= LPFC_HOUR_DAY; + if (mbps) /* Avg of Bandwidth averages */ + mvalue = mbps / LPFC_HOUR_DAY; + + lptr = &cp->cgn_drvr_day[index]; + *lptr = cpu_to_le32(dvalue); + lptr = &cp->cgn_warn_day[index]; + *lptr = cpu_to_le32(wvalue); + lptr = &cp->cgn_latency_day[index]; + *lptr = cpu_to_le32(lvalue); + mptr = &cp->cgn_bw_day[index]; + *mptr = cpu_to_le16(mvalue); + lptr = &cp->cgn_alarm_day[index]; + *lptr = cpu_to_le32(avalue); + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "2420 Congestion Info - daily (%d): " + "%d %d %d %d %d\n", + index, dvalue, wvalue, lvalue, mvalue, avalue); + + /* We just wrote LPFC_MAX_CGN_DAYS of data, + * so we are wrapped on any data after this. + * Save this as the start time for the next day. + */ + if (index == (LPFC_MAX_CGN_DAYS - 1)) { + phba->hba_flag |= HBA_CGN_DAY_WRAP; + ktime_get_real_ts64(&phba->cgn_daily_ts); + } + } + + /* Use the frequency found in the last rcv'ed FPIN */ + value = phba->cgn_fpin_frequency; + if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) + cp->cgn_warn_freq = cpu_to_le16(value); + if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) + cp->cgn_alarm_freq = cpu_to_le16(value); + + /* Frequency (in ms) Signal Warning/Signal Congestion Notifications + * are received by the HBA + */ + value = phba->cgn_sig_freq; + + if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY || + phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) + cp->cgn_warn_freq = cpu_to_le16(value); + if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) + cp->cgn_alarm_freq = cpu_to_le16(value); + + lvalue = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, + LPFC_CGN_CRC32_SEED); + cp->cgn_info_crc = cpu_to_le32(lvalue); +} + +/** + * lpfc_calc_cmf_latency - latency from start of rxate timer interval + * @phba: The Hba for which this call is being executed. + * + * The routine calculates the latency from the beginning of the CMF timer + * interval to the current point in time. It is called from IO completion + * when we exceed our Bandwidth limitation for the time interval. + */ +uint32_t +lpfc_calc_cmf_latency(struct lpfc_hba *phba) +{ + struct timespec64 cmpl_time; + uint32_t msec = 0; + + ktime_get_real_ts64(&cmpl_time); + + /* This routine works on a ms granularity so sec and usec are + * converted accordingly. + */ + if (cmpl_time.tv_sec == phba->cmf_latency.tv_sec) { + msec = (cmpl_time.tv_nsec - phba->cmf_latency.tv_nsec) / + NSEC_PER_MSEC; + } else { + if (cmpl_time.tv_nsec >= phba->cmf_latency.tv_nsec) { + msec = (cmpl_time.tv_sec - + phba->cmf_latency.tv_sec) * MSEC_PER_SEC; + msec += ((cmpl_time.tv_nsec - + phba->cmf_latency.tv_nsec) / NSEC_PER_MSEC); + } else { + msec = (cmpl_time.tv_sec - phba->cmf_latency.tv_sec - + 1) * MSEC_PER_SEC; + msec += (((NSEC_PER_SEC - phba->cmf_latency.tv_nsec) + + cmpl_time.tv_nsec) / NSEC_PER_MSEC); + } + } + return msec; +} + +/** + * lpfc_cmf_timer - This is the timer function for one congestion + * rate interval. + * @timer: Pointer to the high resolution timer that expired + */ +static enum hrtimer_restart +lpfc_cmf_timer(struct hrtimer *timer) +{ + struct lpfc_hba *phba = container_of(timer, struct lpfc_hba, + cmf_timer); + struct rxtable_entry *entry; + uint32_t io_cnt; + uint32_t head, tail; + uint32_t busy, max_read; + uint64_t total, rcv, lat, mbpi; + int timer_interval = LPFC_CMF_INTERVAL; + uint32_t ms; + struct lpfc_cgn_stat *cgs; + int cpu; + + /* Only restart the timer if congestion mgmt is on */ + if (phba->cmf_active_mode == LPFC_CFG_OFF || + !phba->cmf_latency.tv_sec) { + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "6224 CMF timer exit: %d %lld\n", + phba->cmf_active_mode, + (uint64_t)phba->cmf_latency.tv_sec); + return HRTIMER_NORESTART; + } + + /* If pport is not ready yet, just exit and wait for + * the next timer cycle to hit. + */ + if (!phba->pport) + goto skip; + + /* Do not block SCSI IO while in the timer routine since + * total_bytes will be cleared + */ + atomic_set(&phba->cmf_stop_io, 1); + + /* First we need to calculate the actual ms between + * the last timer interrupt and this one. We ask for + * LPFC_CMF_INTERVAL, however the actual time may + * vary depending on system overhead. + */ + ms = lpfc_calc_cmf_latency(phba); + + + /* Immediately after we calculate the time since the last + * timer interrupt, set the start time for the next + * interrupt + */ + ktime_get_real_ts64(&phba->cmf_latency); + + phba->cmf_link_byte_count = + div_u64(phba->cmf_max_line_rate * LPFC_CMF_INTERVAL, 1000); + + /* Collect all the stats from the prior timer interval */ + total = 0; + io_cnt = 0; + lat = 0; + rcv = 0; + for_each_present_cpu(cpu) { + cgs = per_cpu_ptr(phba->cmf_stat, cpu); + total += atomic64_xchg(&cgs->total_bytes, 0); + io_cnt += atomic_xchg(&cgs->rx_io_cnt, 0); + lat += atomic64_xchg(&cgs->rx_latency, 0); + rcv += atomic64_xchg(&cgs->rcv_bytes, 0); + } + + /* Before we issue another CMF_SYNC_WQE, retrieve the BW + * returned from the last CMF_SYNC_WQE issued, from + * cmf_last_sync_bw. This will be the target BW for + * this next timer interval. + */ + if (phba->cmf_active_mode == LPFC_CFG_MANAGED && + phba->link_state != LPFC_LINK_DOWN && + phba->hba_flag & HBA_SETUP) { + mbpi = phba->cmf_last_sync_bw; + phba->cmf_last_sync_bw = 0; + lpfc_issue_cmf_sync_wqe(phba, LPFC_CMF_INTERVAL, total); + } else { + /* For Monitor mode or link down we want mbpi + * to be the full link speed + */ + mbpi = phba->cmf_link_byte_count; + } + phba->cmf_timer_cnt++; + + if (io_cnt) { + /* Update congestion info buffer latency in us */ + atomic_add(io_cnt, &phba->cgn_latency_evt_cnt); + atomic64_add(lat, &phba->cgn_latency_evt); + } + busy = atomic_xchg(&phba->cmf_busy, 0); + max_read = atomic_xchg(&phba->rx_max_read_cnt, 0); + + /* Calculate MBPI for the next timer interval */ + if (mbpi) { + if (mbpi > phba->cmf_link_byte_count || + phba->cmf_active_mode == LPFC_CFG_MONITOR) + mbpi = phba->cmf_link_byte_count; + + /* Change max_bytes_per_interval to what the prior + * CMF_SYNC_WQE cmpl indicated. + */ + if (mbpi != phba->cmf_max_bytes_per_interval) + phba->cmf_max_bytes_per_interval = mbpi; + } + + /* Save rxmonitor information for debug */ + if (phba->rxtable) { + head = atomic_xchg(&phba->rxtable_idx_head, + LPFC_RXMONITOR_TABLE_IN_USE); + entry = &phba->rxtable[head]; + entry->total_bytes = total; + entry->rcv_bytes = rcv; + entry->cmf_busy = busy; + entry->cmf_info = phba->cmf_active_info; + if (io_cnt) { + entry->avg_io_latency = div_u64(lat, io_cnt); + entry->avg_io_size = div_u64(rcv, io_cnt); + } else { + entry->avg_io_latency = 0; + entry->avg_io_size = 0; + } + entry->max_read_cnt = max_read; + entry->io_cnt = io_cnt; + entry->max_bytes_per_interval = mbpi; + if (phba->cmf_active_mode == LPFC_CFG_MANAGED) + entry->timer_utilization = phba->cmf_last_ts; + else + entry->timer_utilization = ms; + entry->timer_interval = ms; + phba->cmf_last_ts = 0; + + /* Increment rxtable index */ + head = (head + 1) % LPFC_MAX_RXMONITOR_ENTRY; + tail = atomic_read(&phba->rxtable_idx_tail); + if (head == tail) { + tail = (tail + 1) % LPFC_MAX_RXMONITOR_ENTRY; + atomic_set(&phba->rxtable_idx_tail, tail); + } + atomic_set(&phba->rxtable_idx_head, head); + } + + if (phba->cmf_active_mode == LPFC_CFG_MONITOR) { + /* If Monitor mode, check if we are oversubscribed + * against the full line rate. + */ + if (mbpi && total > mbpi) + atomic_inc(&phba->cgn_driver_evt_cnt); + } + phba->rx_block_cnt += div_u64(rcv, 512); /* save 512 byte block cnt */ + + /* Each minute save Fabric and Driver congestion information */ + lpfc_cgn_save_evt_cnt(phba); + + /* Since we need to call lpfc_cgn_save_evt_cnt every minute, on the + * minute, adjust our next timer interval, if needed, to ensure a + * 1 minute granularity when we get the next timer interrupt. + */ + if (time_after(jiffies + msecs_to_jiffies(LPFC_CMF_INTERVAL), + phba->cgn_evt_timestamp)) { + timer_interval = jiffies_to_msecs(phba->cgn_evt_timestamp - + jiffies); + if (timer_interval <= 0) + timer_interval = LPFC_CMF_INTERVAL; + + /* If we adjust timer_interval, max_bytes_per_interval + * needs to be adjusted as well. + */ + phba->cmf_link_byte_count = div_u64(phba->cmf_max_line_rate * + timer_interval, 1000); + if (phba->cmf_active_mode == LPFC_CFG_MONITOR) + phba->cmf_max_bytes_per_interval = + phba->cmf_link_byte_count; + } + + /* Since total_bytes has already been zero'ed, its okay to unblock + * after max_bytes_per_interval is setup. + */ + if (atomic_xchg(&phba->cmf_bw_wait, 0)) + queue_work(phba->wq, &phba->unblock_request_work); + + /* SCSI IO is now unblocked */ + atomic_set(&phba->cmf_stop_io, 0); + +skip: + hrtimer_forward_now(timer, + ktime_set(0, timer_interval * NSEC_PER_MSEC)); + return HRTIMER_RESTART; +} + #define trunk_link_status(__idx)\ bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\ ((phba->trunk_link.link##__idx.state == LPFC_LINK_UP) ?\ @@ -5329,6 +6105,9 @@ lpfc_update_trunk_link_status(struct lpfc_hba *phba, trunk_link_status(0), trunk_link_status(1), trunk_link_status(2), trunk_link_status(3)); + if (phba->cmf_active_mode != LPFC_CFG_OFF) + lpfc_cmf_signal_init(phba); + if (port_fault) lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3202 trunk error:0x%x (%s) seen on port0:%s " @@ -5510,9 +6289,10 @@ lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli) uint8_t operational = 0; struct temp_event temp_event_data; struct lpfc_acqe_misconfigured_event *misconfigured; + struct lpfc_acqe_cgn_signal *cgn_signal; struct Scsi_Host *shost; struct lpfc_vport **vports; - int rc, i; + int rc, i, cnt; evt_type = bf_get(lpfc_trailer_type, acqe_sli); @@ -5668,6 +6448,10 @@ lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli) "Event Data1:x%08x Event Data2: x%08x\n", acqe_sli->event_data1, acqe_sli->event_data2); break; + case LPFC_SLI_EVENT_TYPE_PORT_PARAMS_CHG: + /* Call FW to obtain active parms */ + lpfc_sli4_cgn_parm_chg_evt(phba); + break; case LPFC_SLI_EVENT_TYPE_MISCONF_FAWWN: /* Misconfigured WWN. Reports that the SLI Port is configured * to use FA-WWN, but the attached device doesn’t support it. @@ -5685,6 +6469,40 @@ lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli) "Event Data1: x%08x Event Data2: x%08x\n", acqe_sli->event_data1, acqe_sli->event_data2); break; + case LPFC_SLI_EVENT_TYPE_CGN_SIGNAL: + if (phba->cmf_active_mode == LPFC_CFG_OFF) + break; + cgn_signal = (struct lpfc_acqe_cgn_signal *) + &acqe_sli->event_data1; + phba->cgn_acqe_cnt++; + + cnt = bf_get(lpfc_warn_acqe, cgn_signal); + atomic64_add(cnt, &phba->cgn_acqe_stat.warn); + atomic64_add(cgn_signal->alarm_cnt, &phba->cgn_acqe_stat.alarm); + + /* no threshold for CMF, even 1 signal will trigger an event */ + + /* Alarm overrides warning, so check that first */ + if (cgn_signal->alarm_cnt) { + if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) { + /* Keep track of alarm cnt for cgn_info */ + atomic_add(cgn_signal->alarm_cnt, + &phba->cgn_fabric_alarm_cnt); + /* Keep track of alarm cnt for CMF_SYNC_WQE */ + atomic_add(cgn_signal->alarm_cnt, + &phba->cgn_sync_alarm_cnt); + } + } else if (cnt) { + /* signal action needs to be taken */ + if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY || + phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) { + /* Keep track of warning cnt for cgn_info */ + atomic_add(cnt, &phba->cgn_fabric_warn_cnt); + /* Keep track of warning cnt for CMF_SYNC_WQE */ + atomic_add(cnt, &phba->cgn_sync_warn_cnt); + } + } + break; default: lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "3193 Unrecognized SLI event, type: 0x%x", @@ -6060,6 +6878,276 @@ lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba, } /** + * lpfc_sli4_async_cmstat_evt - Process the asynchronous cmstat event + * @phba: pointer to lpfc hba data structure. + * + * This routine is to handle the SLI4 asynchronous cmstat event. A cmstat event + * is an asynchronous notification of a request to reset CM stats. + **/ +static void +lpfc_sli4_async_cmstat_evt(struct lpfc_hba *phba) +{ + if (!phba->cgn_i) + return; + lpfc_init_congestion_stat(phba); +} + +/** + * lpfc_cgn_params_val - Validate FW congestion parameters. + * @phba: pointer to lpfc hba data structure. + * @p_cfg_param: pointer to FW provided congestion parameters. + * + * This routine validates the congestion parameters passed + * by the FW to the driver via an ACQE event. + **/ +static void +lpfc_cgn_params_val(struct lpfc_hba *phba, struct lpfc_cgn_param *p_cfg_param) +{ + spin_lock_irq(&phba->hbalock); + + if (!lpfc_rangecheck(p_cfg_param->cgn_param_mode, LPFC_CFG_OFF, + LPFC_CFG_MONITOR)) { + lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT, + "6225 CMF mode param out of range: %d\n", + p_cfg_param->cgn_param_mode); + p_cfg_param->cgn_param_mode = LPFC_CFG_OFF; + } + + spin_unlock_irq(&phba->hbalock); +} + +/** + * lpfc_cgn_params_parse - Process a FW cong parm change event + * @phba: pointer to lpfc hba data structure. + * @p_cgn_param: pointer to a data buffer with the FW cong params. + * @len: the size of pdata in bytes. + * + * This routine validates the congestion management buffer signature + * from the FW, validates the contents and makes corrections for + * valid, in-range values. If the signature magic is correct and + * after parameter validation, the contents are copied to the driver's + * @phba structure. If the magic is incorrect, an error message is + * logged. + **/ +static void +lpfc_cgn_params_parse(struct lpfc_hba *phba, + struct lpfc_cgn_param *p_cgn_param, uint32_t len) +{ + struct lpfc_cgn_info *cp; + uint32_t crc, oldmode; + + /* Make sure the FW has encoded the correct magic number to + * validate the congestion parameter in FW memory. + */ + if (p_cgn_param->cgn_param_magic == LPFC_CFG_PARAM_MAGIC_NUM) { + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT, + "4668 FW cgn parm buffer data: " + "magic 0x%x version %d mode %d " + "level0 %d level1 %d " + "level2 %d byte13 %d " + "byte14 %d byte15 %d " + "byte11 %d byte12 %d activeMode %d\n", + p_cgn_param->cgn_param_magic, + p_cgn_param->cgn_param_version, + p_cgn_param->cgn_param_mode, + p_cgn_param->cgn_param_level0, + p_cgn_param->cgn_param_level1, + p_cgn_param->cgn_param_level2, + p_cgn_param->byte13, + p_cgn_param->byte14, + p_cgn_param->byte15, + p_cgn_param->byte11, + p_cgn_param->byte12, + phba->cmf_active_mode); + + oldmode = phba->cmf_active_mode; + + /* Any parameters out of range are corrected to defaults + * by this routine. No need to fail. + */ + lpfc_cgn_params_val(phba, p_cgn_param); + + /* Parameters are verified, move them into driver storage */ + spin_lock_irq(&phba->hbalock); + memcpy(&phba->cgn_p, p_cgn_param, + sizeof(struct lpfc_cgn_param)); + + /* Update parameters in congestion info buffer now */ + if (phba->cgn_i) { + cp = (struct lpfc_cgn_info *)phba->cgn_i->virt; + cp->cgn_info_mode = phba->cgn_p.cgn_param_mode; + cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0; + cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1; + cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2; + crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, + LPFC_CGN_CRC32_SEED); + cp->cgn_info_crc = cpu_to_le32(crc); + } + spin_unlock_irq(&phba->hbalock); + + phba->cmf_active_mode = phba->cgn_p.cgn_param_mode; + + switch (oldmode) { + case LPFC_CFG_OFF: + if (phba->cgn_p.cgn_param_mode != LPFC_CFG_OFF) { + /* Turning CMF on */ + lpfc_cmf_start(phba); + + if (phba->link_state >= LPFC_LINK_UP) { + phba->cgn_reg_fpin = + phba->cgn_init_reg_fpin; + phba->cgn_reg_signal = + phba->cgn_init_reg_signal; + lpfc_issue_els_edc(phba->pport, 0); + } + } + break; + case LPFC_CFG_MANAGED: + switch (phba->cgn_p.cgn_param_mode) { + case LPFC_CFG_OFF: + /* Turning CMF off */ + lpfc_cmf_stop(phba); + if (phba->link_state >= LPFC_LINK_UP) + lpfc_issue_els_edc(phba->pport, 0); + break; + case LPFC_CFG_MONITOR: + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "4661 Switch from MANAGED to " + "`MONITOR mode\n"); + phba->cmf_max_bytes_per_interval = + phba->cmf_link_byte_count; + + /* Resume blocked IO - unblock on workqueue */ + queue_work(phba->wq, + &phba->unblock_request_work); + break; + } + break; + case LPFC_CFG_MONITOR: + switch (phba->cgn_p.cgn_param_mode) { + case LPFC_CFG_OFF: + /* Turning CMF off */ + lpfc_cmf_stop(phba); + if (phba->link_state >= LPFC_LINK_UP) + lpfc_issue_els_edc(phba->pport, 0); + break; + case LPFC_CFG_MANAGED: + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "4662 Switch from MONITOR to " + "MANAGED mode\n"); + lpfc_cmf_signal_init(phba); + break; + } + break; + } + } else { + lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT, + "4669 FW cgn parm buf wrong magic 0x%x " + "version %d\n", p_cgn_param->cgn_param_magic, + p_cgn_param->cgn_param_version); + } +} + +/** + * lpfc_sli4_cgn_params_read - Read and Validate FW congestion parameters. + * @phba: pointer to lpfc hba data structure. + * + * This routine issues a read_object mailbox command to + * get the congestion management parameters from the FW + * parses it and updates the driver maintained values. + * + * Returns + * 0 if the object was empty + * -Eval if an error was encountered + * Count if bytes were read from object + **/ +int +lpfc_sli4_cgn_params_read(struct lpfc_hba *phba) +{ + int ret = 0; + struct lpfc_cgn_param *p_cgn_param = NULL; + u32 *pdata = NULL; + u32 len = 0; + + /* Find out if the FW has a new set of congestion parameters. */ + len = sizeof(struct lpfc_cgn_param); + pdata = kzalloc(len, GFP_KERNEL); + ret = lpfc_read_object(phba, (char *)LPFC_PORT_CFG_NAME, + pdata, len); + + /* 0 means no data. A negative means error. A positive means + * bytes were copied. + */ + if (!ret) { + lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT, + "4670 CGN RD OBJ returns no data\n"); + goto rd_obj_err; + } else if (ret < 0) { + /* Some error. Just exit and return it to the caller.*/ + goto rd_obj_err; + } + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT, + "6234 READ CGN PARAMS Successful %d\n", len); + + /* Parse data pointer over len and update the phba congestion + * parameters with values passed back. The receive rate values + * may have been altered in FW, but take no action here. + */ + p_cgn_param = (struct lpfc_cgn_param *)pdata; + lpfc_cgn_params_parse(phba, p_cgn_param, len); + + rd_obj_err: + kfree(pdata); + return ret; +} + +/** + * lpfc_sli4_cgn_parm_chg_evt - Process a FW congestion param change event + * @phba: pointer to lpfc hba data structure. + * + * The FW generated Async ACQE SLI event calls this routine when + * the event type is an SLI Internal Port Event and the Event Code + * indicates a change to the FW maintained congestion parameters. + * + * This routine executes a Read_Object mailbox call to obtain the + * current congestion parameters maintained in FW and corrects + * the driver's active congestion parameters. + * + * The acqe event is not passed because there is no further data + * required. + * + * Returns nonzero error if event processing encountered an error. + * Zero otherwise for success. + **/ +static int +lpfc_sli4_cgn_parm_chg_evt(struct lpfc_hba *phba) +{ + int ret = 0; + + if (!phba->sli4_hba.pc_sli4_params.cmf) { + lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT, + "4664 Cgn Evt when E2E off. Drop event\n"); + return -EACCES; + } + + /* If the event is claiming an empty object, it's ok. A write + * could have cleared it. Only error is a negative return + * status. + */ + ret = lpfc_sli4_cgn_params_read(phba); + if (ret < 0) { + lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT, + "4667 Error reading Cgn Params (%d)\n", + ret); + } else if (!ret) { + lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT, + "4673 CGN Event empty object.\n"); + } + return ret; +} + +/** * lpfc_sli4_async_event_proc - Process all the pending asynchronous event * @phba: pointer to lpfc hba data structure. * @@ -6107,6 +7195,9 @@ void lpfc_sli4_async_event_proc(struct lpfc_hba *phba) case LPFC_TRAILER_CODE_SLI: lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli); break; + case LPFC_TRAILER_CODE_CMSTAT: + lpfc_sli4_async_cmstat_evt(phba); + break; default: lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, @@ -6391,6 +7482,15 @@ lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn) return rc; } +static void +lpfc_unblock_requests_work(struct work_struct *work) +{ + struct lpfc_hba *phba = container_of(work, struct lpfc_hba, + unblock_request_work); + + lpfc_unblock_requests(phba); +} + /** * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources. * @phba: pointer to lpfc hba data structure. @@ -6466,7 +7566,7 @@ lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba) INIT_DELAYED_WORK(&phba->idle_stat_delay_work, lpfc_idle_stat_delay_work); - + INIT_WORK(&phba->unblock_request_work, lpfc_unblock_requests_work); return 0; } @@ -6697,6 +7797,10 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba) /* FCF rediscover timer */ timer_setup(&phba->fcf.redisc_wait, lpfc_sli4_fcf_redisc_wait_tmo, 0); + /* CMF congestion timer */ + hrtimer_init(&phba->cmf_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + phba->cmf_timer.function = lpfc_cmf_timer; + /* * Control structure for handling external multi-buffer mailbox * command pass-through. @@ -7145,6 +8249,14 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba) } #endif + phba->cmf_stat = alloc_percpu(struct lpfc_cgn_stat); + if (!phba->cmf_stat) { + lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, + "3331 Failed allocating per cpu cgn stats\n"); + rc = -ENOMEM; + goto out_free_hba_hdwq_info; + } + /* * Enable sr-iov virtual functions if supported and configured * through the module parameter. @@ -7164,6 +8276,8 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba) return 0; +out_free_hba_hdwq_info: + free_percpu(phba->sli4_hba.c_stat); #ifdef CONFIG_SCSI_LPFC_DEBUG_FS out_free_hba_idle_stat: kfree(phba->sli4_hba.idle_stat); @@ -7211,6 +8325,7 @@ lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba) #ifdef CONFIG_SCSI_LPFC_DEBUG_FS free_percpu(phba->sli4_hba.c_stat); #endif + free_percpu(phba->cmf_stat); kfree(phba->sli4_hba.idle_stat); /* Free memory allocated for msi-x interrupt vector to CPU mapping */ @@ -8537,9 +9652,12 @@ lpfc_map_topology(struct lpfc_hba *phba, struct lpfc_mbx_read_config *rd_config) } /* FW supports persistent topology - override module parameter value */ phba->hba_flag |= HBA_PERSISTENT_TOPO; - switch (phba->pcidev->device) { - case PCI_DEVICE_ID_LANCER_G7_FC: - case PCI_DEVICE_ID_LANCER_G6_FC: + + /* if ASIC_GEN_NUM >= 0xC) */ + if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) == + LPFC_SLI_INTF_IF_TYPE_6) || + (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) == + LPFC_SLI_INTF_FAMILY_G6)) { if (!tf) { phba->cfg_topology = ((pt == LINK_FLAGS_LOOP) ? FLAGS_TOPOLOGY_MODE_LOOP @@ -8547,8 +9665,7 @@ lpfc_map_topology(struct lpfc_hba *phba, struct lpfc_mbx_read_config *rd_config) } else { phba->hba_flag &= ~HBA_PERSISTENT_TOPO; } - break; - default: /* G5 */ + } else { /* G5 */ if (tf) { /* If topology failover set - pt is '0' or '1' */ phba->cfg_topology = (pt ? FLAGS_TOPOLOGY_MODE_PT_LOOP : @@ -8558,7 +9675,6 @@ lpfc_map_topology(struct lpfc_hba *phba, struct lpfc_mbx_read_config *rd_config) ? FLAGS_TOPOLOGY_MODE_PT_PT : FLAGS_TOPOLOGY_MODE_LOOP); } - break; } if (phba->hba_flag & HBA_PERSISTENT_TOPO) { lpfc_printf_log(phba, KERN_INFO, LOG_SLI, @@ -8683,6 +9799,52 @@ lpfc_sli4_read_config(struct lpfc_hba *phba) phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ? (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0; phba->max_vports = phba->max_vpi; + + /* Next decide on FPIN or Signal E2E CGN support + * For congestion alarms and warnings valid combination are: + * 1. FPIN alarms / FPIN warnings + * 2. Signal alarms / Signal warnings + * 3. FPIN alarms / Signal warnings + * 4. Signal alarms / FPIN warnings + * + * Initialize the adapter frequency to 100 mSecs + */ + phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH; + phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; + phba->cgn_sig_freq = lpfc_fabric_cgn_frequency; + + if (lpfc_use_cgn_signal) { + if (bf_get(lpfc_mbx_rd_conf_wcs, rd_config)) { + phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY; + phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN; + } + if (bf_get(lpfc_mbx_rd_conf_acs, rd_config)) { + /* MUST support both alarm and warning + * because EDC does not support alarm alone. + */ + if (phba->cgn_reg_signal != + EDC_CG_SIG_WARN_ONLY) { + /* Must support both or none */ + phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH; + phba->cgn_reg_signal = + EDC_CG_SIG_NOTSUPPORTED; + } else { + phba->cgn_reg_signal = + EDC_CG_SIG_WARN_ALARM; + phba->cgn_reg_fpin = + LPFC_CGN_FPIN_NONE; + } + } + } + + /* Set the congestion initial signal and fpin values. */ + phba->cgn_init_reg_fpin = phba->cgn_reg_fpin; + phba->cgn_init_reg_signal = phba->cgn_reg_signal; + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "6446 READ_CONFIG reg_sig x%x reg_fpin:x%x\n", + phba->cgn_reg_signal, phba->cgn_reg_fpin); + lpfc_map_topology(phba, rd_config); lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "2003 cfg params Extents? %d " @@ -12063,6 +13225,8 @@ lpfc_sli4_hba_unset(struct lpfc_hba *phba) struct pci_dev *pdev = phba->pcidev; lpfc_stop_hba_timers(phba); + hrtimer_cancel(&phba->cmf_timer); + if (phba->pport) phba->sli4_hba.intr_enable = 0; @@ -12133,6 +13297,240 @@ lpfc_sli4_hba_unset(struct lpfc_hba *phba) phba->pport->work_port_events = 0; } +static uint32_t +lpfc_cgn_crc32(uint32_t crc, u8 byte) +{ + uint32_t msb = 0; + uint32_t bit; + + for (bit = 0; bit < 8; bit++) { + msb = (crc >> 31) & 1; + crc <<= 1; + + if (msb ^ (byte & 1)) { + crc ^= LPFC_CGN_CRC32_MAGIC_NUMBER; + crc |= 1; + } + byte >>= 1; + } + return crc; +} + +static uint32_t +lpfc_cgn_reverse_bits(uint32_t wd) +{ + uint32_t result = 0; + uint32_t i; + + for (i = 0; i < 32; i++) { + result <<= 1; + result |= (1 & (wd >> i)); + } + return result; +} + +/* + * The routine corresponds with the algorithm the HBA firmware + * uses to validate the data integrity. + */ +uint32_t +lpfc_cgn_calc_crc32(void *ptr, uint32_t byteLen, uint32_t crc) +{ + uint32_t i; + uint32_t result; + uint8_t *data = (uint8_t *)ptr; + + for (i = 0; i < byteLen; ++i) + crc = lpfc_cgn_crc32(crc, data[i]); + + result = ~lpfc_cgn_reverse_bits(crc); + return result; +} + +void +lpfc_init_congestion_buf(struct lpfc_hba *phba) +{ + struct lpfc_cgn_info *cp; + struct timespec64 cmpl_time; + struct tm broken; + uint16_t size; + uint32_t crc; + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "6235 INIT Congestion Buffer %p\n", phba->cgn_i); + + if (!phba->cgn_i) + return; + cp = (struct lpfc_cgn_info *)phba->cgn_i->virt; + + atomic_set(&phba->cgn_fabric_warn_cnt, 0); + atomic_set(&phba->cgn_fabric_alarm_cnt, 0); + atomic_set(&phba->cgn_sync_alarm_cnt, 0); + atomic_set(&phba->cgn_sync_warn_cnt, 0); + + atomic64_set(&phba->cgn_acqe_stat.alarm, 0); + atomic64_set(&phba->cgn_acqe_stat.warn, 0); + atomic_set(&phba->cgn_driver_evt_cnt, 0); + atomic_set(&phba->cgn_latency_evt_cnt, 0); + atomic64_set(&phba->cgn_latency_evt, 0); + phba->cgn_evt_minute = 0; + phba->hba_flag &= ~HBA_CGN_DAY_WRAP; + + memset(cp, 0xff, LPFC_CGN_DATA_SIZE); + cp->cgn_info_size = cpu_to_le16(LPFC_CGN_INFO_SZ); + cp->cgn_info_version = LPFC_CGN_INFO_V3; + + /* cgn parameters */ + cp->cgn_info_mode = phba->cgn_p.cgn_param_mode; + cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0; + cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1; + cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2; + + ktime_get_real_ts64(&cmpl_time); + time64_to_tm(cmpl_time.tv_sec, 0, &broken); + + cp->cgn_info_month = broken.tm_mon + 1; + cp->cgn_info_day = broken.tm_mday; + cp->cgn_info_year = broken.tm_year - 100; /* relative to 2000 */ + cp->cgn_info_hour = broken.tm_hour; + cp->cgn_info_minute = broken.tm_min; + cp->cgn_info_second = broken.tm_sec; + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT, + "2643 CGNInfo Init: Start Time " + "%d/%d/%d %d:%d:%d\n", + cp->cgn_info_day, cp->cgn_info_month, + cp->cgn_info_year, cp->cgn_info_hour, + cp->cgn_info_minute, cp->cgn_info_second); + + /* Fill in default LUN qdepth */ + if (phba->pport) { + size = (uint16_t)(phba->pport->cfg_lun_queue_depth); + cp->cgn_lunq = cpu_to_le16(size); + } + + /* last used Index initialized to 0xff already */ + + cp->cgn_warn_freq = LPFC_FPIN_INIT_FREQ; + cp->cgn_alarm_freq = LPFC_FPIN_INIT_FREQ; + crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED); + cp->cgn_info_crc = cpu_to_le32(crc); + + phba->cgn_evt_timestamp = jiffies + + msecs_to_jiffies(LPFC_CGN_TIMER_TO_MIN); +} + +void +lpfc_init_congestion_stat(struct lpfc_hba *phba) +{ + struct lpfc_cgn_info *cp; + struct timespec64 cmpl_time; + struct tm broken; + uint32_t crc; + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT, + "6236 INIT Congestion Stat %p\n", phba->cgn_i); + + if (!phba->cgn_i) + return; + + cp = (struct lpfc_cgn_info *)phba->cgn_i->virt; + memset(&cp->cgn_stat_npm, 0, LPFC_CGN_STAT_SIZE); + + ktime_get_real_ts64(&cmpl_time); + time64_to_tm(cmpl_time.tv_sec, 0, &broken); + + cp->cgn_stat_month = broken.tm_mon + 1; + cp->cgn_stat_day = broken.tm_mday; + cp->cgn_stat_year = broken.tm_year - 100; /* relative to 2000 */ + cp->cgn_stat_hour = broken.tm_hour; + cp->cgn_stat_minute = broken.tm_min; + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT, + "2647 CGNstat Init: Start Time " + "%d/%d/%d %d:%d\n", + cp->cgn_stat_day, cp->cgn_stat_month, + cp->cgn_stat_year, cp->cgn_stat_hour, + cp->cgn_stat_minute); + + crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED); + cp->cgn_info_crc = cpu_to_le32(crc); +} + +/** + * __lpfc_reg_congestion_buf - register congestion info buffer with HBA + * @phba: Pointer to hba context object. + * @reg: flag to determine register or unregister. + */ +static int +__lpfc_reg_congestion_buf(struct lpfc_hba *phba, int reg) +{ + struct lpfc_mbx_reg_congestion_buf *reg_congestion_buf; + union lpfc_sli4_cfg_shdr *shdr; + uint32_t shdr_status, shdr_add_status; + LPFC_MBOXQ_t *mboxq; + int length, rc; + + if (!phba->cgn_i) + return -ENXIO; + + mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, + "2641 REG_CONGESTION_BUF mbox allocation fail: " + "HBA state x%x reg %d\n", + phba->pport->port_state, reg); + return -ENOMEM; + } + + length = (sizeof(struct lpfc_mbx_reg_congestion_buf) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_REG_CONGESTION_BUF, length, + LPFC_SLI4_MBX_EMBED); + reg_congestion_buf = &mboxq->u.mqe.un.reg_congestion_buf; + bf_set(lpfc_mbx_reg_cgn_buf_type, reg_congestion_buf, 1); + if (reg > 0) + bf_set(lpfc_mbx_reg_cgn_buf_cnt, reg_congestion_buf, 1); + else + bf_set(lpfc_mbx_reg_cgn_buf_cnt, reg_congestion_buf, 0); + reg_congestion_buf->length = sizeof(struct lpfc_cgn_info); + reg_congestion_buf->addr_lo = + putPaddrLow(phba->cgn_i->phys); + reg_congestion_buf->addr_hi = + putPaddrHigh(phba->cgn_i->phys); + + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); + shdr = (union lpfc_sli4_cfg_shdr *) + &mboxq->u.mqe.un.sli4_config.header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, + &shdr->response); + mempool_free(mboxq, phba->mbox_mem_pool); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2642 REG_CONGESTION_BUF mailbox " + "failed with status x%x add_status x%x," + " mbx status x%x reg %d\n", + shdr_status, shdr_add_status, rc, reg); + return -ENXIO; + } + return 0; +} + +int +lpfc_unreg_congestion_buf(struct lpfc_hba *phba) +{ + lpfc_cmf_stop(phba); + return __lpfc_reg_congestion_buf(phba, 0); +} + +int +lpfc_reg_congestion_buf(struct lpfc_hba *phba) +{ + return __lpfc_reg_congestion_buf(phba, 1); +} + /** * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS. * @phba: Pointer to HBA context object. @@ -12241,7 +13639,6 @@ lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) bf_get(cfg_xib, mbx_sli4_parameters), phba->cfg_enable_fc4_type); fcponly: - phba->nvme_support = 0; phba->nvmet_support = 0; phba->cfg_nvmet_mrq = 0; phba->cfg_nvme_seg_cnt = 0; @@ -12259,9 +13656,10 @@ fcponly: if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT; - /* Only embed PBDE for if_type 6, PBDE support requires xib be set */ - if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != - LPFC_SLI_INTF_IF_TYPE_6) || (!bf_get(cfg_xib, mbx_sli4_parameters))) + /* Enable embedded Payload BDE if support is indicated */ + if (bf_get(cfg_pbde, mbx_sli4_parameters)) + phba->cfg_enable_pbde = 1; + else phba->cfg_enable_pbde = 0; /* @@ -12299,7 +13697,7 @@ fcponly: "6422 XIB %d PBDE %d: FCP %d NVME %d %d %d\n", bf_get(cfg_xib, mbx_sli4_parameters), phba->cfg_enable_pbde, - phba->fcp_embed_io, phba->nvme_support, + phba->fcp_embed_io, sli4_params->nvme, phba->cfg_nvme_embed_cmd, phba->cfg_suppress_rsp); if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) == @@ -12331,21 +13729,6 @@ fcponly: else phba->nsler = 0; - /* Save PB info for use during HBA setup */ - sli4_params->mi_ver = bf_get(cfg_mi_ver, mbx_sli4_parameters); - sli4_params->mib_bde_cnt = bf_get(cfg_mib_bde_cnt, mbx_sli4_parameters); - sli4_params->mib_size = mbx_sli4_parameters->mib_size; - sli4_params->mi_value = LPFC_DFLT_MIB_VAL; - - /* Next we check for Vendor MIB support */ - if (sli4_params->mi_ver && phba->cfg_enable_mi) - phba->cfg_fdmi_on = LPFC_FDMI_SUPPORT; - - lpfc_printf_log(phba, KERN_INFO, LOG_INIT, - "6461 MIB attr %d enable %d FDMI %d buf %d:%d\n", - sli4_params->mi_ver, phba->cfg_enable_mi, - sli4_params->mi_value, sli4_params->mib_bde_cnt, - sli4_params->mib_size); return 0; } @@ -12978,7 +14361,9 @@ lpfc_log_write_firmware_error(struct lpfc_hba *phba, uint32_t offset, const struct firmware *fw) { int rc; + u8 sli_family; + sli_family = bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf); /* Three cases: (1) FW was not supported on the detected adapter. * (2) FW update has been locked out administratively. * (3) Some other error during FW update. @@ -12986,10 +14371,12 @@ lpfc_log_write_firmware_error(struct lpfc_hba *phba, uint32_t offset, * for admin diagnosis. */ if (offset == ADD_STATUS_FW_NOT_SUPPORTED || - (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G6_FC && + (sli_family == LPFC_SLI_INTF_FAMILY_G6 && magic_number != MAGIC_NUMBER_G6) || - (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G7_FC && - magic_number != MAGIC_NUMBER_G7)) { + (sli_family == LPFC_SLI_INTF_FAMILY_G7 && + magic_number != MAGIC_NUMBER_G7) || + (sli_family == LPFC_SLI_INTF_FAMILY_G7P && + magic_number != MAGIC_NUMBER_G7P)) { lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3030 This firmware version is not supported on" " this HBA model. Device:%x Magic:%x Type:%x " @@ -13377,6 +14764,8 @@ lpfc_pci_remove_one_s4(struct pci_dev *pdev) spin_lock_irq(&phba->hbalock); vport->load_flag |= FC_UNLOADING; spin_unlock_irq(&phba->hbalock); + if (phba->cgn_i) + lpfc_unreg_congestion_buf(phba); lpfc_free_sysfs_attr(vport); @@ -14041,17 +15430,18 @@ lpfc_sli4_oas_verify(struct lpfc_hba *phba) void lpfc_sli4_ras_init(struct lpfc_hba *phba) { - switch (phba->pcidev->device) { - case PCI_DEVICE_ID_LANCER_G6_FC: - case PCI_DEVICE_ID_LANCER_G7_FC: + /* if ASIC_GEN_NUM >= 0xC) */ + if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) == + LPFC_SLI_INTF_IF_TYPE_6) || + (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) == + LPFC_SLI_INTF_FAMILY_G6)) { phba->ras_fwlog.ras_hwsupport = true; if (phba->cfg_ras_fwlog_func == PCI_FUNC(phba->pcidev->devfn) && phba->cfg_ras_fwlog_buffsize) phba->ras_fwlog.ras_enabled = true; else phba->ras_fwlog.ras_enabled = false; - break; - default: + } else { phba->ras_fwlog.ras_hwsupport = false; } } @@ -14164,8 +15554,9 @@ void lpfc_dmp_dbg(struct lpfc_hba *phba) unsigned int temp_idx; int i; int j = 0; - unsigned long rem_nsec; - struct lpfc_vport **vports; + unsigned long rem_nsec, iflags; + bool log_verbose = false; + struct lpfc_vport *port_iterator; /* Don't dump messages if we explicitly set log_verbose for the * physical port or any vport. @@ -14173,16 +15564,24 @@ void lpfc_dmp_dbg(struct lpfc_hba *phba) if (phba->cfg_log_verbose) return; - vports = lpfc_create_vport_work_array(phba); - if (vports != NULL) { - for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { - if (vports[i]->cfg_log_verbose) { - lpfc_destroy_vport_work_array(phba, vports); + spin_lock_irqsave(&phba->port_list_lock, iflags); + list_for_each_entry(port_iterator, &phba->port_list, listentry) { + if (port_iterator->load_flag & FC_UNLOADING) + continue; + if (scsi_host_get(lpfc_shost_from_vport(port_iterator))) { + if (port_iterator->cfg_log_verbose) + log_verbose = true; + + scsi_host_put(lpfc_shost_from_vport(port_iterator)); + + if (log_verbose) { + spin_unlock_irqrestore(&phba->port_list_lock, + iflags); return; } } } - lpfc_destroy_vport_work_array(phba, vports); + spin_unlock_irqrestore(&phba->port_list_lock, iflags); if (atomic_cmpxchg(&phba->dbg_log_dmping, 0, 1) != 0) return; |