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megaraid_sas: SPERC OCR changes 

This patch fixes online controller resets on SRIOV-enabled series of
Avago controllers.

1) Remove late detection heartbeat.

2) Change in the behavior if the FW found in READY/OPERATIONAL state.

Signed-off-by: Uday Lingala <uday.lingala@avagotech.com>
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sumit Saxena 2016-01-28 21:04:35 +05:30 committed by Martin K. Petersen
parent e3d178ca77
commit 3885c26b77
1 changed files with 16 additions and 57 deletions
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73
drivers/scsi/megaraid/megaraid_sas_fusion.c
View File

@ -3462,52 +3462,7 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
/* Let SR-IOV VF & PF sync up if there was a HB failure */
if (instance->requestorId && !reason) {
msleep(MEGASAS_OCR_SETTLE_TIME_VF);
/* Look for a late HB update after VF settle time */
if (abs_state == MFI_STATE_OPERATIONAL &&
(instance->hb_host_mem->HB.fwCounter !=
instance->hb_host_mem->HB.driverCounter)) {
instance->hb_host_mem->HB.driverCounter =
instance->hb_host_mem->HB.fwCounter;
dev_warn(&instance->pdev->dev, "SR-IOV:"
"Late FW heartbeat update for "
"scsi%d.\n",
instance->host->host_no);
} else {
/* In VF mode, first poll for FW ready */
for (i = 0;
i < (MEGASAS_RESET_WAIT_TIME * 1000);
i += 20) {
status_reg =
instance->instancet->
read_fw_status_reg(
instance->reg_set);
abs_state = status_reg &
MFI_STATE_MASK;
if (abs_state == MFI_STATE_READY) {
dev_warn(&instance->pdev->dev,
"SR-IOV: FW was found"
"to be in ready state "
"for scsi%d.\n",
instance->host->host_no);
break;
}
msleep(20);
}
if (abs_state != MFI_STATE_READY) {
dev_warn(&instance->pdev->dev, "SR-IOV: "
"FW not in ready state after %d"
" seconds for scsi%d, status_reg = "
"0x%x.\n",
MEGASAS_RESET_WAIT_TIME,
instance->host->host_no,
status_reg);
megaraid_sas_kill_hba(instance);
instance->skip_heartbeat_timer_del = 1;
atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
retval = FAILED;
goto out;
}
}
goto transition_to_ready;
}
/* Now try to reset the chip */
@ -3516,25 +3471,28 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
if (instance->instancet->adp_reset
(instance, instance->reg_set))
continue;
transition_to_ready:
/* Wait for FW to become ready */
if (megasas_transition_to_ready(instance, 1)) {
dev_warn(&instance->pdev->dev, "Failed to "
"transition controller to ready "
"for scsi%d.\n",
instance->host->host_no);
continue;
dev_warn(&instance->pdev->dev,
"Failed to transition controller to ready for "
"scsi%d.\n", instance->host->host_no);
if (instance->requestorId && !reason)
goto fail_kill_adapter;
else
continue;
}
megasas_reset_reply_desc(instance);
megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
if (megasas_ioc_init_fusion(instance)) {
dev_warn(&instance->pdev->dev,
"megasas_ioc_init_fusion() failed!"
" for scsi%d\n",
instance->host->host_no);
continue;
"megasas_ioc_init_fusion() failed! for "
"scsi%d\n", instance->host->host_no);
if (instance->requestorId && !reason)
goto fail_kill_adapter;
else
continue;
}
megasas_refire_mgmt_cmd(instance);
@ -3591,6 +3549,7 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
retval = SUCCESS;
goto out;
}
fail_kill_adapter:
/* Reset failed, kill the adapter */
dev_warn(&instance->pdev->dev, "Reset failed, killing "
"adapter scsi%d.\n", instance->host->host_no);