From: John Garry Date: Thu, 25 Feb 2016 09:42:13 +0000 (+0800) Subject: hisi_sas: use slot abort in v2 hw X-Git-Tag: v4.6-rc1~133^2~32 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=9c8ee657cf779ae4224e515ff48863378ac42f58;p=linux.git hisi_sas: use slot abort in v2 hw 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 Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index 58e195686160..b7337476454b 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -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; }