man/man9e/tran_tgt_probe.9e

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 tran_tgt_probe 9E "1 Nov 1993" "SunOS 5.11" "Driver Entry Points"
 NAME
tran_tgt_probe - request to probe SCSI bus for a particular target
 SYNOPSIS

#include <sys/scsi/scsi.h>


int prefixtran_tgt_probe(struct scsi_device *sd, int (*waitfunc,
 void)););


 INTERFACE LEVEL

Solaris architecture specific (Solaris DDI).
 PARAMETERS

sd

Pointer to a scsi_device(9S) structure.


waitfunc

Pointer to either NULL_FUNC or SLEEP_FUNC.


 DESCRIPTION

The tran_tgt_probe() vector in the scsi_hba_tran(9S) structure may
be initialized during the HBA driver's attach(9E) to point to a
function to be called by scsi_probe(9F) when called by a target driver
during probe(9E) and attach(9E) to probe for a particular SCSI
target on the bus. In the absence of an HBA-specific
tran_tgt_probe() function, the default scsi_probe(9F) behavior is
supplied by the function scsi_hba_probe(9F).

The possible choices the HBA driver may make are:


Initialize the tran_tgt_probe vector to point to
scsi_hba_probe(9F), which results in the same behavior.


Initialize the tran_tgt_probe vector to point to a private function in
the HBA, which may call scsi_hba_probe(9F) before or after any
necessary processing, as long as all the defined scsi_probe(9F) semantics
are preserved.


waitfunc indicates what tran_tgt_probe() should do when resources
are not available:

NULL_FUNC

Do not wait for resources. See scsi_probe(9F) for defined return values
if no resources are available.


SLEEP_FUNC

Wait indefinitely for resources.


 SEE ALSO

attach(9E), probe(9E), tran_tgt_free(9E),
tran_tgt_init(9E), scsi_hba_probe(9F), scsi_probe(9F),
scsi_device(9S), scsi_hba_tran(9S)

Writing Device Drivers