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hisi_sas: use slot abort in v2 hw

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When TRANS_TX_ERR_FRAME_TXED error occurs 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).
A superflous debug statement is also removed in the
slot complete handler.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
John Garry 2016-02-25 17:42:13 +08:00 committed by Martin K. Petersen
parent 91b2bb92fe
commit 9c8ee657cf
1 changed files with 12 additions and 3 deletions
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15
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
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@ -1299,6 +1299,13 @@ static void slot_err_v2_hw(struct hisi_hba *hisi_hba,
ts->stat = SAS_DATA_UNDERRUN;
break;
}
case TRANS_TX_ERR_FRAME_TXED:
{
/* This will request a retry */
ts->stat = SAS_QUEUE_FULL;
slot->abort = 1;
break;
}
case TRANS_TX_OPEN_FAIL_WITH_IT_NEXUS_LOSS:
case TRANS_TX_ERR_PHY_NOT_ENABLE:
case TRANS_TX_OPEN_CNX_ERR_BY_OTHER:
@ -1491,11 +1498,13 @@ slot_complete_v2_hw(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot,
if ((complete_hdr->dw0 & CMPLT_HDR_ERX_MSK) &&
(!(complete_hdr->dw0 & CMPLT_HDR_RSPNS_XFRD_MSK))) {
dev_dbg(dev, "%s slot %d has error info 0x%x\n",
__func__, slot->cmplt_queue_slot,
complete_hdr->dw0 & CMPLT_HDR_ERX_MSK);
slot_err_v2_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;
}