[PATCH v2 14/18] scsi: libsas: Add sas_clear_task_set()

John Garry
2022-02-17T15:49:58Z

Add a generic implementation of clear task set TMF handler, and use in
LLDDs.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Yihang Li <liyihang6@hisilicon.com>
---
drivers/scsi/hisi_sas/hisi_sas_main.c | 5 +----
drivers/scsi/libsas/sas_scsi_host.c | 10 ++++++++++
drivers/scsi/mvsas/mv_init.c | 2 +-
drivers/scsi/mvsas/mv_sas.c | 11 -----------
drivers/scsi/mvsas/mv_sas.h | 1 -
drivers/scsi/pm8001/pm8001_sas.c | 4 +---
include/scsi/libsas.h | 1 +
7 files changed, 14 insertions(+), 20 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 54fe25ddac5b..6826ddfeaca5 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -690,7 +690,6 @@ static int hisi_sas_init_device(struct domain_device *device)
{
int rc = TMF_RESP_FUNC_COMPLETE;
struct scsi_lun lun;
- struct sas_tmf_task tmf_task;
int retry = HISI_SAS_DISK_RECOVER_CNT;
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
struct device *dev = hisi_hba->dev;
@@ -700,10 +699,8 @@ static int hisi_sas_init_device(struct domain_device *device)
case SAS_END_DEVICE:
int_to_scsilun(0, &lun);

- tmf_task.tmf = TMF_CLEAR_TASK_SET;
while (retry-- > 0) {
- rc = hisi_sas_debug_issue_ssp_tmf(device, lun.scsi_lun,
- &tmf_task);
+ rc = sas_clear_task_set(device, lun.scsi_lun);
if (rc == TMF_RESP_FUNC_COMPLETE) {
hisi_sas_release_task(hisi_hba, device);
break;
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 06bc7221ac3a..ac669215c3bc 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -1053,6 +1053,16 @@ int sas_abort_task_set(struct domain_device *dev, u8 *lun)
}
EXPORT_SYMBOL_GPL(sas_abort_task_set);

+int sas_clear_task_set(struct domain_device *dev, u8 *lun)
+{
+ struct sas_tmf_task tmf_task = {
+ .tmf = TMF_CLEAR_TASK_SET,
+ };
+
+ return sas_execute_ssp_tmf(dev, lun, &tmf_task);
+}
+EXPORT_SYMBOL_GPL(sas_clear_task_set);
+
/*
* Tell an upper layer that it needs to initiate an abort for a given task.
* This should only ever be called by an LLDD.
diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c
index 13a002e08a12..d12fb210c868 100644
--- a/drivers/scsi/mvsas/mv_init.c
+++ b/drivers/scsi/mvsas/mv_init.c
@@ -64,7 +64,7 @@ static struct sas_domain_function_template mvs_transport_ops = {

.lldd_abort_task = mvs_abort_task,
.lldd_abort_task_set = sas_abort_task_set,
- .lldd_clear_task_set = mvs_clear_task_set,
+ .lldd_clear_task_set = sas_clear_task_set,
.lldd_I_T_nexus_reset = mvs_I_T_nexus_reset,
.lldd_lu_reset = mvs_lu_reset,
.lldd_query_task = mvs_query_task,
diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index 0cdbba31f327..37604b1ebd46 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -1536,17 +1536,6 @@ int mvs_abort_task(struct sas_task *task)
return rc;
}

-int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
-{
- int rc = TMF_RESP_FUNC_FAILED;
- struct sas_tmf_task tmf_task;
-
- tmf_task.tmf = TMF_CLEAR_TASK_SET;
- rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
-
- return rc;
-}
-
static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
u32 slot_idx, int err)
{
diff --git a/drivers/scsi/mvsas/mv_sas.h b/drivers/scsi/mvsas/mv_sas.h
index 0bee63596208..509d8f32a04f 100644
--- a/drivers/scsi/mvsas/mv_sas.h
+++ b/drivers/scsi/mvsas/mv_sas.h
@@ -440,7 +440,6 @@ void mvs_scan_start(struct Scsi_Host *shost);
int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time);
int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags);
int mvs_abort_task(struct sas_task *task);
-int mvs_clear_task_set(struct domain_device *dev, u8 * lun);
void mvs_port_formed(struct asd_sas_phy *sas_phy);
void mvs_port_deformed(struct asd_sas_phy *sas_phy);
int mvs_dev_found(struct domain_device *dev);
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index 543113564a58..fd86490616e8 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -1344,14 +1344,12 @@ int pm8001_abort_task(struct sas_task *task)

int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
{
- struct sas_tmf_task tmf_task;
struct pm8001_device *pm8001_dev = dev->lldd_dev;
struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);

pm8001_dbg(pm8001_ha, EH, "I_T_L_Q clear task set[%x]\n",
pm8001_dev->device_id);
- tmf_task.tmf = TMF_CLEAR_TASK_SET;
- return pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
+ return sas_clear_task_set(dev, lun);
}

void pm8001_port_formed(struct asd_sas_phy *sas_phy)
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 53fdc18bdd09..f71a47740ff8 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -723,6 +723,7 @@ struct sas_phy *sas_get_local_phy(struct domain_device *dev);
int sas_request_addr(struct Scsi_Host *shost, u8 *addr);

int sas_abort_task_set(struct domain_device *dev, u8 *lun);
+int sas_clear_task_set(struct domain_device *dev, u8 *lun);

int sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
gfp_t gfp_flags);
--
2.26.2