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scsi: libsas: Introduce sas_find_attached_phy_id() helper 

LLDDs are all implementing their own attached phy ID finding code.  Factor
it out to libsas.

Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20220928070130.3657183-3-yanaijie@huawei.com
Reviewed-by: Jack Wang <jinpu.wang@ionos.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Jason Yan 2022-09-28 15:01:24 +08:00 committed by Martin K. Petersen
parent 773792e4e7
commit 2d08f329a4
2 changed files with 18 additions and 0 deletions
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16
drivers/scsi/libsas/sas_expander.c
View File

@ -2107,6 +2107,22 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev)
return res; return res;
} }
int sas_find_attached_phy_id(struct expander_device *ex_dev,
struct domain_device *dev)
{
struct ex_phy *phy;
int phy_id;
for (phy_id = 0; phy_id < ex_dev->num_phys; phy_id++) {
phy = &ex_dev->ex_phy[phy_id];
if (sas_phy_match_dev_addr(dev, phy))
return phy_id;
}
return -ENODEV;
}
EXPORT_SYMBOL_GPL(sas_find_attached_phy_id);
void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost, void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
struct sas_rphy *rphy) struct sas_rphy *rphy)
{ {

2
include/scsi/libsas.h
View File

@ -746,6 +746,8 @@ int sas_clear_task_set(struct domain_device *dev, u8 *lun);
int sas_lu_reset(struct domain_device *dev, u8 *lun); int sas_lu_reset(struct domain_device *dev, u8 *lun);
int sas_query_task(struct sas_task *task, u16 tag); int sas_query_task(struct sas_task *task, u16 tag);
int sas_abort_task(struct sas_task *task, u16 tag); int sas_abort_task(struct sas_task *task, u16 tag);
int sas_find_attached_phy_id(struct expander_device *ex_dev,
struct domain_device *dev);
void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event, void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
gfp_t gfp_flags); gfp_t gfp_flags);