'\" 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_SETUP_CDB 9F "Jan 16, 2006"
.SH NAME
scsi_setup_cdb \- setup SCSI command descriptor block (CDB)
.SH SYNOPSIS
.LP
.nf
\fBint\fR \fBscsi_setup_cdb\fR(\fBunion scsi_cdb\fR \fI*cdbp\fR, \fBuchar_t\fR \fIcmd\fR, \fBuint_t\fR \fIaddr\fR,
     \fBuint_t\fR \fIcnt\fR, \fBuint_t\fR \fIothr_cdb_data\fR);
.fi

.SH INTERFACE LEVEL
.sp
.LP
Solaris DDI specific (Solaris DDI).
.SH PARAMETERS
.sp
.ne 2
.na
\fB\fIcdbp\fR\fR
.ad
.RS 17n
Pointer to command descriptor block.
.RE

.sp
.ne 2
.na
\fB\fIcmd\fR\fR
.ad
.RS 17n
The first byte of the \fBSCSI\fR group 0, 1, 2, 4, or 5 \fBCDB\fR.
.RE

.sp
.ne 2
.na
\fB\fIaddr\fR\fR
.ad
.RS 17n
Pointer to the location of the data.
.RE

.sp
.ne 2
.na
\fB\fIcnt\fR\fR
.ad
.RS 17n
Data transfer length in units defined by the SCSI device type. For sequential
devices \fIcnt\fR is the number of bytes. For block devices, \fIcnt\fR is the
number of blocks.
.RE

.sp
.ne 2
.na
\fB\fIothr_cdb_data\fR\fR
.ad
.RS 17n
Additional \fBCDB\fR data.
.RE

.SH DESCRIPTION
.sp
.LP
The \fBscsi_setup_cdb()\fR function initializes a group 0, 1, 2, 4, or 5 type
of command descriptor block pointed to by  \fIcdbp\fR using \fIcmd\fR,
\fIaddr\fR, \fIcnt\fR, \fIothr_cdb_data\fR.
.sp
.LP
\fIaddr\fR should be set to 0 for commands having no addressing information
(for example, group 0 READ command for sequential access devices).
\fIothr_cdb_data\fR should be additional \fBCDB\fR data for Group 4 commands;
otherwise, it should be set to 0.
.sp
.LP
The \fBscsi_setup_cdb()\fR function does not set the \fBLUN\fR bits in
\fBCDB\fR[1] as the  \fBmakecom\fR(9F) functions do.  Also, the fixed bit for
sequential access device commands is not set.
.SH RETURN VALUES
.sp
.LP
The \fBscsi_setup_cdb()\fR function returns:
.sp
.ne 2
.na
\fB\fB1\fR\fR
.ad
.RS 5n
Upon success.
.RE

.sp
.ne 2
.na
\fB\fB0\fR\fR
.ad
.RS 5n
Upon failure.
.RE

.SH CONTEXT
.sp
.LP
These functions can be called from a user, interrupt, or kernel context.
.SH SEE ALSO
.sp
.LP
\fBmakecom\fR(9F), \fBscsi_pkt\fR(9S)
.sp
.LP
\fIWriting Device Drivers\fR
.sp
.LP
\fIAmerican National Standard Small Computer System Interface-2 (SCSI-2)\fR
.sp
.LP
\fIAmerican National Standard SCSI-3 Primary Commands (SPC)\fR