'\" 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_sense_key 9F "28 Jun 2006" "SunOS 5.11" "Kernel Functions for Drivers"
.SH NAME
scsi_sense_key, scsi_sense_asc, scsi_sense_ascq \- retrieve fields from SCSI
sense data
.SH SYNOPSIS
.LP
.nf
#include <sys/scsi/scsi.h>



\fBuint8_t\fR \fBscsi_sense_key\fR(\fBuint8_t *\fR\fIsense_buffer\fR);
.fi

.LP
.nf
\fBuint8_t\fR \fBscsi_sense_asc\fR(\fBuint8_t *\fR\fIsense_buffer\fR);
.fi

.LP
.nf
\fBuint8_t\fR \fBscsi_sense_ascq\fR(\fBuint8_t *\fR\fIsense_buffer\fR);
.fi

.SH INTERFACE LEVEL
.sp
.LP
Solaris DDI specific (Solaris DDI).
.SH PARAMETERS
.sp
.ne 2
.mk
.na
\fB\fIsense_buffer\fR\fR
.ad
.RS 16n
.rt  
Pointer to a buffer containing \fBSCSI\fR sense data. The sense data is
expected in wire format starting at the response code. It can be in either
fixed or descriptor format.
.RE

.SH DESCRIPTION
.sp
.LP
The \fBscsi_sense_key()\fR function returns the sense key value from the sense
data contained in the sense_buffer.
.sp
.LP
The \fBscsi_sense_asc()\fR function returns the additional sense code
(\fBASC\fR) value from the sense data contained in the sense_buffer.
.sp
.LP
The \fBscsi_sense_ascq()\fR function returns the additional sense code
qualifier (\fBASCQ\fR) value from the sense data contained in the sense_buffer.
.sp
.LP
The \fBscsi_sense_key()\fR, \fBscsi_sense_asc()\fR, and \fBscsi_sense_ascq()\fR
functions are used to retrieve values from \fBSCSI\fR sense data, regardles of
whether the sense data is in fixed format or descriptor format.
.sp
.LP
Drivers should use \fBscsi_validate_sense\fR(9F) to ensure that valid sense
key, \fBasc\fR, and \fBascq\fR values are present in the sense data.
.SH RETURN VALUES
.sp
.LP
The \fBscsi_sense_key()\fR function returns the sense key value from the sense
buffer. The \fBscsi_sense_asc()\fR function returns the additional sense code
(\fBASC\fR) from the sense buffer and the \fBscsi_sense_ascq()\fR function
returns the additional sense code qualifier (\fBASCQ\fR) from the sense buffer.
.SH CONTEXT
.sp
.LP
The \fBscsi_sense_key()\fR, \fBscsi_sense_asc()\fR, and \fBscsi_sense_ascq()\fR
functions can be called from user or interrupt context.
.SH SEE ALSO
.sp
.LP
\fBscsi_ext_sense_fields\fR(9F), \fBscsi_find_sense_descr\fR(9F),
\fBscsi_sense_cmdspecific_uint64\fR(9F), \fBscsi_sense_info_uint64\fR(9F),
\fBscsi_validate_sense\fR(9F)