'\" te
.\"  Copyright (c) 1995, Sun Microsystems, Inc.  All Rights Reserved
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.TH TRAN_TGT_FREE 9E "Nov 1, 1993"
.SH NAME
tran_tgt_free \- request to free HBA resources allocated on behalf of a target
.SH SYNOPSIS
.nf
#include <sys/scsi/scsi.h>



\fBvoid prefix\fR\fBtran_tgt_free\fR(\fBdev_info_t *\fR\fIhba_dip\fR, \fBdev_info_t *\fR\fItgt_dip\fR,
     \fBscsi_hba_tran_t *\fR\fIhba_tran\fR, \fBstruct scsi_device *\fR\fIsd\fR);
.fi

.SH INTERFACE LEVEL
illumos architecture specific (illumos DDI).
.SH PARAMETERS
.ne 2
.na
\fB\fIhba_dip\fR \fR
.ad
.RS 13n
Pointer to a  \fBdev_info_t\fR structure, referring to the \fBHBA\fR device
instance.
.RE

.sp
.ne 2
.na
\fB\fItgt_dip\fR \fR
.ad
.RS 13n
Pointer to a  \fBdev_info_t\fR structure, referring to the target device
instance.
.RE

.sp
.ne 2
.na
\fB\fIhba_tran\fR \fR
.ad
.RS 13n
Pointer to a  \fBscsi_hba_tran\fR(9S) structure, consisting of the \fBHBA\fR's
transport vectors.
.RE

.sp
.ne 2
.na
\fB\fIsd\fR \fR
.ad
.RS 13n
Pointer to a  \fBscsi_device\fR(9S) structure, describing the target.
.RE

.SH DESCRIPTION
The \fBtran_tgt_free()\fR vector in the \fBscsi_hba_tran\fR(9S) structure may
be initialized during the \fBHBA\fR driver's \fBattach\fR(9E) to point to an
\fBHBA\fR driver function to be called by the system when an instance of a
target device is being detached.  The \fBtran_tgt_free()\fR vector, if not
\fINULL\fR, is called after the target device instance has returned
successfully from its \fBdetach\fR(9E) entry point, but before the
\fBdev_info\fR node structure is removed from the system. The \fBHBA\fR driver
should release any resources allocated during its \fBtran_tgt_init()\fR or
\fBtran_tgt_probe()\fR initialization performed for this target device
instance.
.SH SEE ALSO
.BR attach (9E),
.BR detach (9E),
.BR tran_tgt_init (9E),
.BR tran_tgt_probe (9E),
.BR scsi_device (9S),
.BR scsi_hba_tran (9S)
.sp
.LP
\fIWriting Device Drivers\fR