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scsi_transport_sas: add function to get SAS endpoint address

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For a device known to be SAS connected, this will return the endpoint
address.  This is useful for getting the SAS address of SATA devices.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
James Bottomley 2015-12-09 11:13:35 -08:00
parent 3b91d09c1c
commit bcf508c133
2 changed files with 15 additions and 0 deletions
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14
drivers/scsi/scsi_transport_sas.c
View file

@ -382,6 +382,20 @@ void sas_remove_host(struct Scsi_Host *shost)
}
EXPORT_SYMBOL(sas_remove_host);
/**
* sas_get_address - return the SAS address of the device
* @sdev: scsi device
*
* Returns the SAS address of the scsi device
*/
u64 sas_get_address(struct scsi_device *sdev)
{
struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
return rdev->rphy.identify.sas_address;
}
EXPORT_SYMBOL(sas_get_address);
/**
* sas_tlr_supported - checking TLR bit in vpd 0x90
* @sdev: scsi device struct

1
include/scsi/scsi_transport_sas.h
View file

@ -189,6 +189,7 @@ extern int sas_phy_add(struct sas_phy *);
extern void sas_phy_delete(struct sas_phy *);
extern int scsi_is_sas_phy(const struct device *);
u64 sas_get_address(struct scsi_device *);
unsigned int sas_tlr_supported(struct scsi_device *);
unsigned int sas_is_tlr_enabled(struct scsi_device *);
void sas_disable_tlr(struct scsi_device *);