Respond to user request to probe for/add device
int scsi_add_single_device(uint host, uint channel, uint id, uint lun);
host
user-supplied decimal integer
channel
user-supplied decimal integer
id
user-supplied decimal integer
lun
user-supplied decimal integer
called by writing “scsi add-single-device” to /proc/scsi/scsi.
does scsi_host_lookup and either user_scan if that transport type supports it, or else scsi_scan_host_selected
this seems to be aimed exclusively at SCSI parallel busses.