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hisi_sas: use slot abort in v1 hw 

When TRANS_TX_CREDIT_TIMEOUT_ERR or
TRANS_TX_CLOSE_NORMAL_ERR error occur in
a slot, the command should be re-attempted.
This error is equivalent to meaning that the queue
is full in the sdev (and not the host).

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
John Garry 2016-02-25 17:42:12 +08:00 committed by Martin K. Petersen
parent cac9b2a217
commit 91b2bb92fe
1 changed files with 13 additions and 0 deletions
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13
drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
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@ -1212,6 +1212,14 @@ static void slot_err_v1_hw(struct hisi_hba *hisi_hba,
ts->stat = SAS_NAK_R_ERR;
break;
}
case TRANS_TX_CREDIT_TIMEOUT_ERR:
case TRANS_TX_CLOSE_NORMAL_ERR:
{
/* This will request a retry */
ts->stat = SAS_QUEUE_FULL;
slot->abort = 1;
break;
}
default:
{
ts->stat = SAM_STAT_CHECK_CONDITION;
@ -1319,6 +1327,11 @@ static int slot_complete_v1_hw(struct hisi_hba *hisi_hba,
!(cmplt_hdr_data & CMPLT_HDR_RSPNS_XFRD_MSK)) {
slot_err_v1_hw(hisi_hba, task, slot);
if (unlikely(slot->abort)) {
queue_work(hisi_hba->wq, &slot->abort_slot);
/* immediately return and do not complete */
return ts->stat;
}
goto out;
}