Commit 13815c83 authored by James Smart's avatar James Smart Committed by James Bottomley
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[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: default avatarJames Smart <James.Smart@emulex.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent fa61a54e
......@@ -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 */
......
......@@ -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;
......
......@@ -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) {
......
......@@ -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);
......
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