[PATCH 11/13] scsi: hisi_sas: Update v3 hw STP_LINK_TIMER setting

Yihang Li
2024-09-26T01:43:36Z

From: Xingui Yang <yangxingui@huawei.com>

At present, it is found that some SATA HDD disks may continue to return the
HOLD primitive for more than 500ms when they are busy writing data, which
is more likely to trigger an STP link timeout exception. Now Modify STP
link timer from 500ms to the maximum value of 1.048575s.

Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Reviewed-by: Yihang Li <liyihang9@huawei.com>
---
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 5c97c4463032..bc5c96320f5a 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -686,7 +686,7 @@ static void init_reg_v3_hw(struct hisi_hba *hisi_hba)
hisi_sas_phy_write32(hisi_hba, i, PHY_CTRL_RDY_MSK, 0x0);
hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_DWS_RESET_MSK, 0x0);
hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_OOB_RESTART_MSK, 0x1);
- hisi_sas_phy_write32(hisi_hba, i, STP_LINK_TIMER, 0x7f7a120);
+ hisi_sas_phy_write32(hisi_hba, i, STP_LINK_TIMER, 0x7ffffff);
hisi_sas_phy_write32(hisi_hba, i, CON_CFG_DRIVER, 0x2a0a01);
hisi_sas_phy_write32(hisi_hba, i, SAS_EC_INT_COAL_TIME,
0x30f4240);
--
2.33.0