TRAN_TGT_INIT(9E)TRAN_TGT_INIT(9E)NAME
tran_tgt_init - request to initialize HBA resources on behalf of a par‐
ticular target
SYNOPSIS
#include <sys/scsi/scsi.h>
void prefixtran_tgt_init(dev_info_t *hba_dip, dev_info_t *tgt_dip,
scsi_hba_tran_t *hba_tran, struct scsi_device *sd);
INTERFACE LEVEL
Solaris architecture specific (Solaris DDI).
PARAMETERS
hba_dip
Pointer to a dev_info_t structure, referring to the HBA
device instance.
tgt_dip
Pointer to a dev_info_t structure, referring to the target
device instance.
hba_tran
Pointer to a scsi_hba_tran(9S) structure, consisting of
the HBA's transport vectors.
sd
Pointer to a scsi_device(9S) structure, describing the
target.
DESCRIPTION
The tran_tgt_init() vector in the scsi_hba_tran(9S) structure may be
initialized during the HBA driver's attach(9E) to point to an HBA
driver function to be called by the system when an instance of a target
device is being created. The tran_tgt_init() vector, if not NULL,is
called after the dev_info node structure is created for this target
device instance, but before probe(9E) for this instance is called.
Before receiving transport requests from the target driver instance,
the HBA may perform any initialization required for this particular
target during the call of the tran_tgt_init() vector.
Note that hba_tran will point to a cloned copy of the scsi_hba_tran_t
structure allocated by the HBA driver if the SCSI_HBA_TRAN_CLONE flag
was specified in the call to scsi_hba_attach(9F). In this case, the HBA
driver may choose to initialize the tran_tgt_private field in the
structure pointed to by hba_tran, to point to the data specific to the
particular target device instance.
RETURN VALUEStran_tgt_init() must return:
DDI_SUCCESS
the HBA driver can support the addressed target, and
was able to initialize per-target resources.
DDI_FAILURE
the HBA driver cannot support the addressed target, or
was unable to initialize per-target resources. In this
event, the initialization of this instance of the tar‐
get device will not be continued, the target driver's
probe(9E) will not be called, and the tgt_dip structure
destroyed.
SEE ALSOattach(9E), probe(9E), tran_tgt_free(9E), tran_tgt_probe(9E),
scsi_hba_attach_setup(9F), scsi_device(9S), scsi_hba_tran(9S)
Writing Device Drivers
Nov 1, 1993 TRAN_TGT_INIT(9E)
