All of lore.kernel.org
 help / color / mirror / Atom feed
From: John Garry <john.garry@huawei.com>
To: <jejb@linux.vnet.ibm.com>, <martin.petersen@oracle.com>
Cc: <linux-scsi@vger.kernel.org>, <linuxarm@huawei.com>,
	<linux-kernel@vger.kernel.org>,
	Xiang Chen <chenxiang66@hisilicon.com>,
	"John Garry" <john.garry@huawei.com>
Subject: [PATCH v2 02/18] scsi: hisi_sas: Set the BIST init value before enabling BIST
Date: Thu, 24 Oct 2019 22:08:09 +0800	[thread overview]
Message-ID: <1571926105-74636-3-git-send-email-john.garry@huawei.com> (raw)
In-Reply-To: <1571926105-74636-1-git-send-email-john.garry@huawei.com>

From: Xiang Chen <chenxiang66@hisilicon.com>

If set the BIST init value after enabling BIST, there may be still some
few error bits. According to the process, need to set the BIST init value
before enabling BIST.

Fixes: 97b151e75861 ("scsi: hisi_sas: Add BIST support for phy loopback")
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
---
 drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index cb8d087762db..cc594937fa8d 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -3022,11 +3022,6 @@ static int debugfs_set_bist_v3_hw(struct hisi_hba *hisi_hba, bool enable)
 		hisi_sas_phy_write32(hisi_hba, phy_id,
 				     SAS_PHY_BIST_CTRL, reg_val);
 
-		mdelay(100);
-		reg_val |= (CFG_RX_BIST_EN_MSK | CFG_TX_BIST_EN_MSK);
-		hisi_sas_phy_write32(hisi_hba, phy_id,
-				     SAS_PHY_BIST_CTRL, reg_val);
-
 		/* set the bist init value */
 		hisi_sas_phy_write32(hisi_hba, phy_id,
 				     SAS_PHY_BIST_CODE,
@@ -3035,6 +3030,11 @@ static int debugfs_set_bist_v3_hw(struct hisi_hba *hisi_hba, bool enable)
 				     SAS_PHY_BIST_CODE1,
 				     SAS_PHY_BIST_CODE1_INIT);
 
+		mdelay(100);
+		reg_val |= (CFG_RX_BIST_EN_MSK | CFG_TX_BIST_EN_MSK);
+		hisi_sas_phy_write32(hisi_hba, phy_id,
+				     SAS_PHY_BIST_CTRL, reg_val);
+
 		/* clear error bit */
 		mdelay(100);
 		hisi_sas_phy_read32(hisi_hba, phy_id, SAS_BIST_ERR_CNT);
-- 
2.17.1


  parent reply	other threads:[~2019-10-24 14:13 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-24 14:08 [PATCH v2 00/18] hisi_sas: Misc patches, mostly debugfs John Garry
2019-10-24 14:08 ` [PATCH v2 01/18] scsi: hisi_sas: Don't create debugfs dump folder twice John Garry
2019-10-24 14:08 ` John Garry [this message]
2019-10-24 14:08 ` [PATCH v2 03/18] scsi: hisi_sas: use wait_for_completion_timeout() when clearing ITCT John Garry
2019-10-24 14:08 ` [PATCH v2 04/18] scsi: hisi_sas: Replace in_softirq() check in hisi_sas_task_exec() John Garry
2019-10-24 14:08 ` [PATCH v2 05/18] scsi: hisi_sas: Add timestamp for a debugfs dump John Garry
2019-10-24 14:08 ` [PATCH v2 06/18] scsi: hisi_sas: Add debugfs file structure for CQ John Garry
2019-10-24 14:08 ` [PATCH v2 07/18] scsi: hisi_sas: Add debugfs file structure for DQ John Garry
2019-10-24 14:08 ` [PATCH v2 08/18] scsi: hisi_sas: Add debugfs file structure for registers John Garry
2019-10-24 14:08 ` [PATCH v2 09/18] scsi: hisi_sas: Add debugfs file structure for port John Garry
2019-10-24 14:08 ` [PATCH v2 10/18] scsi: hisi_sas: Add debugfs file structure for IOST John Garry
2019-10-24 14:08 ` [PATCH v2 11/18] scsi: hisi_sas: Add debugfs file structure for ITCT John Garry
2019-10-24 14:08 ` [PATCH v2 12/18] scsi: hisi_sas: Add debugfs file structure for IOST cache John Garry
2019-10-24 14:08 ` [PATCH v2 13/18] scsi: hisi_sas: Add debugfs file structure for ITCT cache John Garry
2019-10-24 14:08 ` [PATCH v2 14/18] scsi: hisi_sas: Allocate memory for multiple dumps of debugfs John Garry
2019-10-24 14:08 ` [PATCH v2 15/18] scsi: hisi_sas: Add module parameter for debugfs dump count John Garry
2019-10-24 14:08 ` [PATCH v2 16/18] scsi: hisi_sas: Add ability to have multiple debugfs dumps John Garry
2019-10-24 14:08 ` [PATCH v2 17/18] scsi: hisi_sas: Delete the debugfs folder of hisi_sas when the probe fails John Garry
2019-10-24 14:08 ` [PATCH v2 18/18] scsi: hisi_sas: Record the phy down event in debugfs John Garry
2019-10-25  1:31 ` [PATCH v2 00/18] hisi_sas: Misc patches, mostly debugfs Martin K. Petersen

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1571926105-74636-3-git-send-email-john.garry@huawei.com \
    --to=john.garry@huawei.com \
    --cc=chenxiang66@hisilicon.com \
    --cc=jejb@linux.vnet.ibm.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-scsi@vger.kernel.org \
    --cc=linuxarm@huawei.com \
    --cc=martin.petersen@oracle.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.