scsi: hisi_sas: Update v3 hw STP_LINK_TIMER setting

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>
Link: https://lore.kernel.org/r/20241008021822.2617339-12-liyihang9@huawei.com
Reviewed-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 5c97c44..bc5c963 100644 (file)
--- 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);