Commit 512623de authored by Xiang Chen's avatar Xiang Chen Committed by Martin K. Petersen

scsi: hisi_sas: Change hisi_sas_control_phy() phyup timeout

The time of phyup not only depends on the controller but also the type of
disk connected. As an example, from experience, for some SATA disks the
amount of time from reset/power-on to receive the D2H FIS for phyup can
take upto and more than 10s sometimes. According to the specification of
some SATA disks such as ST14000NM0018, the max time from power-on to ready
is 30s.

Based on this the current timeout of phyup at 2s which is not enough. So
set the value as HISI_SAS_WAIT_PHYUP_TIMEOUT (30s) in
hisi_sas_control_phy().

For v3 hw there is a pre-existing workaround for a HW bug, being that we
issue a link reset when the OOB occurs but the phyup does not. The current
phyup timeout is HISI_SAS_WAIT_PHYUP_TIMEOUT. So if this does occur from
when issuing a phy enable or similar via hisi_sas_control_phy(), the
subsequent HW workaround linkreset processing calls hisi_sas_control_phy(),
but this will pend the original phy reset timing out, so it is safe.

Link: https://lore.kernel.org/r/1645703489-87194-3-git-send-email-john.garry@huawei.comSigned-off-by: default avatarXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: default avatarJohn Garry <john.garry@huawei.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent c4e07045
...@@ -91,7 +91,7 @@ ...@@ -91,7 +91,7 @@
#define HISI_SAS_PROT_MASK (HISI_SAS_DIF_PROT_MASK | HISI_SAS_DIX_PROT_MASK) #define HISI_SAS_PROT_MASK (HISI_SAS_DIF_PROT_MASK | HISI_SAS_DIX_PROT_MASK)
#define HISI_SAS_WAIT_PHYUP_TIMEOUT (20 * HZ) #define HISI_SAS_WAIT_PHYUP_TIMEOUT (30 * HZ)
#define HISI_SAS_CLEAR_ITCT_TIMEOUT (20 * HZ) #define HISI_SAS_CLEAR_ITCT_TIMEOUT (20 * HZ)
struct hisi_hba; struct hisi_hba;
......
...@@ -1201,7 +1201,8 @@ static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, ...@@ -1201,7 +1201,8 @@ static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
goto out; goto out;
} }
if (sts && !wait_for_completion_timeout(&completion, 2 * HZ)) { if (sts && !wait_for_completion_timeout(&completion,
HISI_SAS_WAIT_PHYUP_TIMEOUT)) {
dev_warn(dev, "phy%d wait phyup timed out for func %d\n", dev_warn(dev, "phy%d wait phyup timed out for func %d\n",
phy_no, func); phy_no, func);
if (phy->in_reset) if (phy->in_reset)
......
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