Messages in this thread | | | Subject | Re: [PATCH 4/6] hisi_sas: use slot abort in v2 hw | From | John Garry <> | Date | Tue, 16 Feb 2016 16:58:50 +0000 |
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On 16/02/2016 15:32, Hannes Reinecke wrote: > On 02/16/2016 01:22 PM, John Garry wrote: >> When TRANS_TX_ERR_FRAME_TXED error occurs for >> a command, the command should be re-attempted. >> >> Signed-off-by: John Garry <john.garry@huawei.com> >> --- >> drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 19 +++++++++++++++++-- >> 1 file changed, 17 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c >> index 58e1956..2bf93079b 100644 >> --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c >> +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c >> @@ -1190,7 +1190,8 @@ static void sata_done_v2_hw(struct hisi_hba *hisi_hba, struct sas_task *task, >> /* by default, task resp is complete */ >> static void slot_err_v2_hw(struct hisi_hba *hisi_hba, >> struct sas_task *task, >> - struct hisi_sas_slot *slot) >> + struct hisi_sas_slot *slot, >> + int *abort_slot) >> { >> struct task_status_struct *ts = &task->task_status; >> struct hisi_sas_err_record_v2 *err_record = slot->status_buffer; >> @@ -1299,6 +1300,13 @@ 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; >> + ++(*abort_slot); >> + 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 +1499,17 @@ 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))) { >> + int abort_slot = 0; >> 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); >> + slot_err_v2_hw(hisi_hba, task, slot, &abort_slot); >> + if (unlikely(abort_slot)) { >> + queue_work(hisi_hba->wq, &slot->abort_slot); >> + sts = ts->stat; >> + goto out_1; >> + } >> goto out; >> } >> > Again this weird 'abort_slot' pointer reshuffling. > Care to clarify? > > Cheers, > > Hannes >
Hopefully my explanation for patch #3 will help clarify here, as the code is functionally the same.
Thanks, John
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