scsi: libsas: Add sas_abort_task_set()

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

Link: https://lore.kernel.org/r/1645112566-115804-14-git-send-email-john.garry@huawei.com
Tested-by: Yihang Li <liyihang6@hisilicon.com>
Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/hisi_sas/hisi_sas_main.c

@@ -1788,7 +1788,6 @@ static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
 {
 	struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
 	struct device *dev = hisi_hba->dev;
-	struct sas_tmf_task tmf_task;
 	int rc;
 
 	rc = hisi_sas_internal_task_abort(hisi_hba, device,
@@ -1799,9 +1798,7 @@ static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
 	}
 	hisi_sas_dereg_device(hisi_hba, device);
 
-	tmf_task.tmf = TMF_ABORT_TASK_SET;
+	rc = sas_abort_task_set(device, lun);
-	rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
-
 	if (rc == TMF_RESP_FUNC_COMPLETE)
 		hisi_sas_release_task(hisi_hba, device);
 

drivers/scsi/libsas/sas_scsi_host.c

@@ -1030,9 +1030,7 @@ int sas_execute_tmf(struct domain_device *device, void *parameter,
 	return res;
 }
 
-int sas_execute_ssp_tmf(struct domain_device *device, u8 *lun,
+static int sas_execute_ssp_tmf(struct domain_device *device, u8 *lun,
-			struct sas_tmf_task *tmf);
-int sas_execute_ssp_tmf(struct domain_device *device, u8 *lun,
 			       struct sas_tmf_task *tmf)
 {
 	struct sas_ssp_task ssp_task;
@@ -1045,6 +1043,16 @@ int sas_execute_ssp_tmf(struct domain_device *device, u8 *lun,
 	return sas_execute_tmf(device, &ssp_task, sizeof(ssp_task), -1, tmf);
 }
 
+int sas_abort_task_set(struct domain_device *dev, u8 *lun)
+{
+	struct sas_tmf_task tmf_task = {
+		.tmf = TMF_ABORT_TASK_SET,
+	};
+
+	return sas_execute_ssp_tmf(dev, lun, &tmf_task);
+}
+EXPORT_SYMBOL_GPL(sas_abort_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.

drivers/scsi/mvsas/mv_init.c

@@ -63,7 +63,7 @@ static struct sas_domain_function_template mvs_transport_ops = {
 	.lldd_control_phy	= mvs_phy_control,
 
 	.lldd_abort_task	= mvs_abort_task,
-	.lldd_abort_task_set    = mvs_abort_task_set,
+	.lldd_abort_task_set    = sas_abort_task_set,
 	.lldd_clear_task_set    = mvs_clear_task_set,
 	.lldd_I_T_nexus_reset	= mvs_I_T_nexus_reset,
 	.lldd_lu_reset 		= mvs_lu_reset,

drivers/scsi/mvsas/mv_sas.c

@@ -1536,17 +1536,6 @@ out:
 	return rc;
 }
 
-int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
-{
-	int rc;
-	struct sas_tmf_task tmf_task;
-
-	tmf_task.tmf = TMF_ABORT_TASK_SET;
-	rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
-
-	return rc;
-}
-
 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
 {
 	int rc = TMF_RESP_FUNC_FAILED;

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_abort_task_set(struct domain_device *dev, u8 *lun);
 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);

drivers/scsi/pm8001/pm8001_init.c

@@ -122,7 +122,7 @@ static struct sas_domain_function_template pm8001_transport_ops = {
 	.lldd_control_phy	= pm8001_phy_control,
 
 	.lldd_abort_task	= pm8001_abort_task,
-	.lldd_abort_task_set	= pm8001_abort_task_set,
+	.lldd_abort_task_set	= sas_abort_task_set,
 	.lldd_clear_task_set	= pm8001_clear_task_set,
 	.lldd_I_T_nexus_reset   = pm8001_I_T_nexus_reset,
 	.lldd_lu_reset		= pm8001_lu_reset,

drivers/scsi/pm8001/pm8001_sas.c

@@ -1342,14 +1342,6 @@ out:
 	return rc;
 }
 
-int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
-{
-	struct sas_tmf_task tmf_task;
-
-	tmf_task.tmf = TMF_ABORT_TASK_SET;
-	return pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
-}
-
 int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
 {
 	struct sas_tmf_task tmf_task;

drivers/scsi/pm8001/pm8001_sas.h

@@ -644,7 +644,6 @@ void pm8001_scan_start(struct Scsi_Host *shost);
 int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time);
 int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags);
 int pm8001_abort_task(struct sas_task *task);
-int pm8001_abort_task_set(struct domain_device *dev, u8 *lun);
 int pm8001_clear_task_set(struct domain_device *dev, u8 *lun);
 int pm8001_dev_found(struct domain_device *dev);
 void pm8001_dev_gone(struct domain_device *dev);

include/scsi/libsas.h

@@ -722,6 +722,8 @@ 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_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
 			  gfp_t gfp_flags);
 int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,