diff mbox series

[02/18] scsi: hisi_sas: Set the BIST init value before enabling BIST

Message ID 1571674935-108326-3-git-send-email-john.garry@huawei.com
State Superseded
Headers show
Series hisi_sas: Misc patches, mostly debugfs | expand

Commit Message

John Garry Oct. 21, 2019, 4:21 p.m. UTC 
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(-)

-- 
2.17.1
diff mbox series

Patch

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);