From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760402AbcBYJ26 (ORCPT ); Thu, 25 Feb 2016 04:28:58 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:46196 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760374AbcBYJ2y (ORCPT ); Thu, 25 Feb 2016 04:28:54 -0500 From: John Garry To: , CC: , , , , John Garry Subject: [PATCH v2 4/6] hisi_sas: use slot abort in v2 hw Date: Thu, 25 Feb 2016 17:42:13 +0800 Message-ID: <1456393335-38294-5-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1456393335-38294-1-git-send-email-john.garry@huawei.com> References: <1456393335-38294-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090203.56CEC953.0008,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 6b762b598e957746588ad0bb83cc2e65 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 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..b733747 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; } -- 1.9.1