'\" te
.\"  Copyright (c) 2006, Sun Microsystems, Inc., All Rights Reserved
.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
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.TH SCSI_HBA_TRAN_ALLOC 9F "Jan 16, 2006"
.SH NAME
scsi_hba_tran_alloc, scsi_hba_tran_free \- allocate and free transport
structures
.SH SYNOPSIS
.LP
.nf
#include <sys/scsi/scsi.h>



\fBscsi_hba_tran_t *\fR\fBscsi_hba_tran_alloc\fR(\fBdev_info_t *\fR\fIdip\fR, \fBint\fR \fIflags\fR);
.fi

.LP
.nf
\fBvoid\fR \fBscsi_hba_tran_free\fR(\fBscsi_hba_tran_t *\fR\fIhba_tran\fR);
.fi

.SH INTERFACE LEVEL
.sp
.LP
Solaris architecture specific (Solaris DDI).
.SH PARAMETERS
.sp
.ne 2
.na
\fB\fIdip\fR\fR
.ad
.RS 12n
Pointer to a \fBdev_info\fR structure, defining the \fBHBA\fR driver instance.
.RE

.sp
.ne 2
.na
\fB\fIflag\fR\fR
.ad
.RS 12n
Flag modifiers. The only possible flag value is \fBSCSI_HBA_CANSLEEP\fR (memory
allocation may sleep).
.RE

.sp
.ne 2
.na
\fB\fIhba_tran\fR\fR
.ad
.RS 12n
Pointer to a \fBscsi_hba_tran\fR(9S) structure.
.RE

.SH DESCRIPTION
.sp
.LP
For \fBscsi_hba_tran_alloc()\fR:
.sp
.LP
The \fBscsi_hba_tran_alloc()\fR function allocates a  \fBscsi_hba_tran\fR(9S)
structure for a \fBHBA\fR driver. The \fBHBA\fR must use this structure to
register its transport vectors with the system by using
\fBscsi_hba_attach_setup\fR(9F).
.sp
.LP
If the flag \fBSCSI_HBA_CANSLEEP\fR is set in \fIflags\fR,
\fBscsi_hba_tran_alloc()\fR may sleep when allocating resources; otherwise it
may not sleep, and callers should be prepared to deal with allocation failures.
.sp
.LP
For \fBscsi_hba_tran_free()\fR:
.sp
.LP
The \fBscsi_hba_tran_free()\fR function is used to free the
\fBscsi_hba_tran\fR(9S) structure allocated by \fBscsi_hba_tran_alloc()\fR.
.SH RETURN VALUES
.sp
.LP
The \fBscsi_hba_tran_alloc()\fR function returns a pointer to the allocated
transport structure, or \fBNULL\fR if no space is available.
.SH CONTEXT
.sp
.LP
The \fBscsi_hba_tran_alloc()\fR function can be called from user, interrupt, or
kernel context. Drivers must not allow \fBscsi_hba_tran_alloc()\fR to sleep if
called from an interrupt routine.
.sp
.LP
The \fBscsi_hba_tran_free()\fR function can be called from user, interrupt, or
kernel context context.
.SH SEE ALSO
.sp
.LP
\fBscsi_hba_attach_setup\fR(9F), \fBscsi_hba_tran\fR(9S)
.sp
.LP
\fIWriting Device Drivers\fR