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scsi: libsas: Add sas_lu_reset() 

Add a generic implementation of LU reset TMF handler, and use in LLDDs.

Link: https://lore.kernel.org/r/1645112566-115804-16-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>
This commit is contained in:
John Garry 2022-02-17 23:42:43 +08:00 committed by Martin K. Petersen
parent e858545295
commit 29d7769055
5 changed files with 14 additions and 9 deletions
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4
drivers/scsi/hisi_sas/hisi_sas_main.c
View File

@ -1933,9 +1933,7 @@ static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
hisi_sas_release_task(hisi_hba, device);
sas_put_local_phy(phy);
} else {
struct sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET };
rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
rc = sas_lu_reset(device, lun);
if (rc == TMF_RESP_FUNC_COMPLETE)
hisi_sas_release_task(hisi_hba, device);
}

10
drivers/scsi/libsas/sas_scsi_host.c
View File

@ -1063,6 +1063,16 @@ int sas_clear_task_set(struct domain_device *dev, u8 *lun)
}
EXPORT_SYMBOL_GPL(sas_clear_task_set);
int sas_lu_reset(struct domain_device *dev, u8 *lun)
{
struct sas_tmf_task tmf_task = {
.tmf = TMF_LU_RESET,
};
return sas_execute_ssp_tmf(dev, lun, &tmf_task);
}
EXPORT_SYMBOL_GPL(sas_lu_reset);
/*
* Tell an upper layer that it needs to initiate an abort for a given task.
* This should only ever be called by an LLDD.

4
drivers/scsi/mvsas/mv_sas.c
View File

@ -1381,13 +1381,11 @@ int mvs_lu_reset(struct domain_device *dev, u8 *lun)
{
unsigned long flags;
int rc = TMF_RESP_FUNC_FAILED;
struct sas_tmf_task tmf_task;
struct mvs_device * mvi_dev = dev->lldd_dev;
struct mvs_info *mvi = mvi_dev->mvi_info;
tmf_task.tmf = TMF_LU_RESET;
mvi_dev->dev_status = MVS_DEV_EH;
rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
rc = sas_lu_reset(dev, lun);
if (rc == TMF_RESP_FUNC_COMPLETE) {
spin_lock_irqsave(&mvi->lock, flags);
mvs_release_task(mvi, dev);

4
drivers/scsi/pm8001/pm8001_sas.c
View File

@ -1112,7 +1112,6 @@ out:
int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
{
int rc = TMF_RESP_FUNC_FAILED;
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);
DECLARE_COMPLETION_ONSTACK(completion_setstate);
@ -1127,8 +1126,7 @@ int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
pm8001_dev, DS_OPERATIONAL);
wait_for_completion(&completion_setstate);
} else {
tmf_task.tmf = TMF_LU_RESET;
rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
rc = sas_lu_reset(dev, lun);
}
/* If failed, fall-through I_T_Nexus reset */
pm8001_dbg(pm8001_ha, EH, "for device[%x]:rc=%d\n",

1
include/scsi/libsas.h
View File

@ -724,6 +724,7 @@ 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_lu_reset(struct domain_device *dev, u8 *lun);
int sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
gfp_t gfp_flags);