From 13815c8344a238c204e4f4339b22dc4833c6df0f Mon Sep 17 00:00:00 2001 From: James Smart Date: Fri, 11 Jan 2008 01:52:48 -0500 Subject: [PATCH] [SCSI] lpfc 8.2.4 : Add parameters to enable and disable heartbeat and hba resets Add parameters to enable and disable heartbeat and hba resets Signed-off-by: James Smart Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc.h | 3 +- drivers/scsi/lpfc/lpfc_attr.c | 25 +++++++++++ drivers/scsi/lpfc/lpfc_init.c | 78 ++++++++++++++++++----------------- drivers/scsi/lpfc/lpfc_sli.c | 5 +++ 4 files changed, 73 insertions(+), 38 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index b06635ac3356..5bf402a20682 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -471,7 +471,8 @@ struct lpfc_hba { uint64_t cfg_soft_wwnn; uint64_t cfg_soft_wwpn; uint32_t cfg_hba_queue_depth; - + uint32_t cfg_enable_hba_reset; + uint32_t cfg_enable_hba_heartbeat; lpfc_vpd_t vpd; /* vital product data */ diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index e1b041d8f6d5..68e92be1ef5b 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -342,6 +342,9 @@ lpfc_selective_reset(struct lpfc_hba *phba) struct completion online_compl; int status = 0; + if (!phba->cfg_enable_hba_reset) + return -EIO; + status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE); if (status != 0) @@ -415,6 +418,8 @@ lpfc_board_mode_store(struct class_device *cdev, const char *buf, size_t count) struct completion online_compl; int status=0; + if (!phba->cfg_enable_hba_reset) + return -EACCES; init_completion(&online_compl); if(strncmp(buf, "online", sizeof("online") - 1) == 0) { @@ -979,6 +984,8 @@ lpfc_soft_wwpn_store(struct class_device *cdev, const char *buf, size_t count) unsigned int i, j, cnt=count; u8 wwpn[8]; + if (!phba->cfg_enable_hba_reset) + return -EACCES; spin_lock_irq(&phba->hbalock); if (phba->over_temp_state == HBA_OVER_TEMP) { spin_unlock_irq(&phba->hbalock); @@ -1506,7 +1513,21 @@ LPFC_ATTR_RW(poll_tmo, 10, 1, 255, */ LPFC_ATTR_R(use_msi, 0, 0, 1, "Use Message Signaled Interrupts, if possible"); +/* +# lpfc_enable_hba_reset: Allow or prevent HBA resets to the hardware. +# 0 = HBA resets disabled +# 1 = HBA resets enabled (default) +# Value range is [0,1]. Default value is 1. +*/ +LPFC_ATTR_R(enable_hba_reset, 1, 0, 1, "Enable HBA resets from the driver."); +/* +# lpfc_enable_hba_heartbeat: Enable HBA heartbeat timer.. +# 0 = HBA Heartbeat disabled +# 1 = HBA Heartbeat enabled (default) +# Value range is [0,1]. Default value is 1. +*/ +LPFC_ATTR_R(enable_hba_heartbeat, 1, 0, 1, "Enable HBA Heartbeat."); struct class_device_attribute *lpfc_hba_attrs[] = { &class_device_attr_info, @@ -1558,6 +1579,8 @@ struct class_device_attribute *lpfc_hba_attrs[] = { &class_device_attr_lpfc_soft_wwnn, &class_device_attr_lpfc_soft_wwpn, &class_device_attr_lpfc_soft_wwn_enable, + &class_device_attr_lpfc_enable_hba_reset, + &class_device_attr_lpfc_enable_hba_heartbeat, NULL, }; @@ -2448,6 +2471,8 @@ lpfc_get_cfgparam(struct lpfc_hba *phba) lpfc_poll_tmo_init(phba, lpfc_poll_tmo); lpfc_enable_npiv_init(phba, lpfc_enable_npiv); lpfc_use_msi_init(phba, lpfc_use_msi); + lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset); + lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat); phba->cfg_poll = lpfc_poll; phba->cfg_soft_wwnn = 0L; phba->cfg_soft_wwpn = 0L; diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index f32cd9acd3f6..c6b30a8617bc 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -594,49 +594,50 @@ lpfc_hb_timeout_handler(struct lpfc_hba *phba) } phba->elsbuf_prev_cnt = phba->elsbuf_cnt; - /* If there is no heart beat outstanding, issue a heartbeat command */ - if (!phba->hb_outstanding) { - pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL); - if (!pmboxq) { - mod_timer(&phba->hb_tmofunc, - jiffies + HZ * LPFC_HB_MBOX_INTERVAL); - return; - } + if (phba->cfg_enable_hba_heartbeat) { + if (!phba->hb_outstanding) { + pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL); + if (!pmboxq) { + mod_timer(&phba->hb_tmofunc, + jiffies + HZ * LPFC_HB_MBOX_INTERVAL); + return; + } - lpfc_heart_beat(phba, pmboxq); - pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl; - pmboxq->vport = phba->pport; - retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); + lpfc_heart_beat(phba, pmboxq); + pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl; + pmboxq->vport = phba->pport; + retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); - if (retval != MBX_BUSY && retval != MBX_SUCCESS) { - mempool_free(pmboxq, phba->mbox_mem_pool); + if (retval != MBX_BUSY && retval != MBX_SUCCESS) { + mempool_free(pmboxq, phba->mbox_mem_pool); + mod_timer(&phba->hb_tmofunc, + jiffies + HZ * LPFC_HB_MBOX_INTERVAL); + return; + } mod_timer(&phba->hb_tmofunc, - jiffies + HZ * LPFC_HB_MBOX_INTERVAL); + jiffies + HZ * LPFC_HB_MBOX_TIMEOUT); + phba->hb_outstanding = 1; return; + } else { + /* + * If heart beat timeout called with hb_outstanding set + * we need to take the HBA offline. + */ + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0459 Adapter heartbeat failure, " + "taking this port offline.\n"); + + spin_lock_irq(&phba->hbalock); + psli->sli_flag &= ~LPFC_SLI2_ACTIVE; + spin_unlock_irq(&phba->hbalock); + + lpfc_offline_prep(phba); + lpfc_offline(phba); + lpfc_unblock_mgmt_io(phba); + phba->link_state = LPFC_HBA_ERROR; + lpfc_hba_down_post(phba); } - mod_timer(&phba->hb_tmofunc, - jiffies + HZ * LPFC_HB_MBOX_TIMEOUT); - phba->hb_outstanding = 1; - return; - } else { - /* - * If heart beat timeout called with hb_outstanding set we - * need to take the HBA offline. - */ - lpfc_printf_log(phba, KERN_ERR, LOG_INIT, - "0459 Adapter heartbeat failure, taking " - "this port offline.\n"); - - spin_lock_irq(&phba->hbalock); - psli->sli_flag &= ~LPFC_SLI2_ACTIVE; - spin_unlock_irq(&phba->hbalock); - - lpfc_offline_prep(phba); - lpfc_offline(phba); - lpfc_unblock_mgmt_io(phba); - phba->link_state = LPFC_HBA_ERROR; - lpfc_hba_down_post(phba); } } @@ -665,6 +666,9 @@ lpfc_handle_eratt(struct lpfc_hba *phba) * since we cannot communicate with the pci card anyway. */ if (pci_channel_offline(phba->pcidev)) return; + /* If resets are disabled then leave the HBA alone and return */ + if (!phba->cfg_enable_hba_reset) + return; if (phba->work_hs & HS_FFER6 || phba->work_hs & HS_FFER5) { diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index be6519793f8a..46d529d6ac6b 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -2559,6 +2559,11 @@ lpfc_mbox_timeout_handler(struct lpfc_hba *phba) * lpfc_offline calls lpfc_sli_hba_down which will clean up * on oustanding mailbox commands. */ + /* If resets are disabled then set error state and return. */ + if (!phba->cfg_enable_hba_reset) { + phba->link_state = LPFC_HBA_ERROR; + return; + } lpfc_offline_prep(phba); lpfc_offline(phba); lpfc_sli_brdrestart(phba); -- 2.30.2