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Groups > linux.kernel > #1335313

[PATCH 4/6] hisi_sas: use slot abort in v2 hw

From John Garry <john.garry@huawei.com>
Newsgroups linux.kernel
Subject [PATCH 4/6] hisi_sas: use slot abort in v2 hw
Date 2016-02-16 13:10 +0100
Message-ID <r2MC7-7Er-29@gated-at.bofh.it> (permalink)
References <r2MC6-7Er-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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;
 	}
 
@@ -1555,6 +1569,7 @@ out:
 
 	if (task->task_done)
 		task->task_done(task);
+out_1:
 
 	return sts;
 }
-- 
1.9.1

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Thread

[PATCH 0/6] hisi_sas: add abort and retry feature John Garry <john.garry@huawei.com> - 2016-02-16 13:10 +0100
  [PATCH 1/6] hisi_sas: add TMF_RESP_FUNC_SUCC check John Garry <john.garry@huawei.com> - 2016-02-16 13:10 +0100
    Re: [PATCH 1/6] hisi_sas: add TMF_RESP_FUNC_SUCC check Hannes Reinecke <hare@suse.de> - 2016-02-16 16:30 +0100
  [PATCH 6/6] hisi_sas: update driver version to 1.3 John Garry <john.garry@huawei.com> - 2016-02-16 13:10 +0100
  [PATCH 2/6] hisi_sas: add hisi_sas_slot_abort() John Garry <john.garry@huawei.com> - 2016-02-16 13:10 +0100
    Re: [PATCH 2/6] hisi_sas: add hisi_sas_slot_abort() Hannes Reinecke <hare@suse.de> - 2016-02-16 16:30 +0100
      Re: [PATCH 2/6] hisi_sas: add hisi_sas_slot_abort() John Garry <john.garry@huawei.com> - 2016-02-16 16:50 +0100
        Re: [PATCH 2/6] hisi_sas: add hisi_sas_slot_abort() John Garry <john.garry@huawei.com> - 2016-02-18 10:40 +0100
  [PATCH 5/6] hisi_sas: add hisi_sas_slave_configure() John Garry <john.garry@huawei.com> - 2016-02-16 13:10 +0100
    Re: [PATCH 5/6] hisi_sas: add hisi_sas_slave_configure() Hannes Reinecke <hare@suse.de> - 2016-02-16 16:40 +0100
      Re: [PATCH 5/6] hisi_sas: add hisi_sas_slave_configure() John Garry <john.garry@huawei.com> - 2016-02-16 18:00 +0100
        Re: [PATCH 5/6] hisi_sas: add hisi_sas_slave_configure() Hannes Reinecke <hare@suse.de> - 2016-02-18 08:50 +0100
          Re: [PATCH 5/6] hisi_sas: add hisi_sas_slave_configure() John Garry <john.garry@huawei.com> - 2016-02-18 11:20 +0100
            Re: [PATCH 5/6] hisi_sas: add hisi_sas_slave_configure() Hannes Reinecke <hare@suse.de> - 2016-02-18 11:40 +0100
              Re: [PATCH 5/6] hisi_sas: add hisi_sas_slave_configure() John Garry <john.garry@huawei.com> - 2016-02-18 12:00 +0100
                Re: [PATCH 5/6] hisi_sas: add hisi_sas_slave_configure() John Garry <john.garry@huawei.com> - 2016-02-19 11:50 +0100
                Re: [PATCH 5/6] hisi_sas: add hisi_sas_slave_configure() Hannes Reinecke <hare@suse.de> - 2016-02-19 15:40 +0100
                Re: [PATCH 5/6] hisi_sas: add hisi_sas_slave_configure() John Garry <john.garry@huawei.com> - 2016-02-22 11:10 +0100
  [PATCH 3/6] hisi_sas: use slot abort in v1 hw John Garry <john.garry@huawei.com> - 2016-02-16 13:10 +0100
    Re: [PATCH 3/6] hisi_sas: use slot abort in v1 hw Hannes Reinecke <hare@suse.de> - 2016-02-16 16:40 +0100
      Re: [PATCH 3/6] hisi_sas: use slot abort in v1 hw John Garry <john.garry@huawei.com> - 2016-02-16 17:20 +0100
        Re: [PATCH 3/6] hisi_sas: use slot abort in v1 hw Hannes Reinecke <hare@suse.de> - 2016-02-18 08:20 +0100
          Re: [PATCH 3/6] hisi_sas: use slot abort in v1 hw John Garry <john.garry@huawei.com> - 2016-02-18 11:00 +0100
  [PATCH 4/6] hisi_sas: use slot abort in v2 hw John Garry <john.garry@huawei.com> - 2016-02-16 13:10 +0100
    Re: [PATCH 4/6] hisi_sas: use slot abort in v2 hw Hannes Reinecke <hare@suse.de> - 2016-02-16 16:40 +0100
      Re: [PATCH 4/6] hisi_sas: use slot abort in v2 hw John Garry <john.garry@huawei.com> - 2016-02-16 18:00 +0100

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