1.\" Copyright (c) 1997 2.\" John-Mark Gurney. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the author nor the names of any co-contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY John-Mark Gurney AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" $Id: cd.9,v 1.6 1997/04/02 09:41:16 jmg Exp $ 29.\" 30.Dd February 1, 1997 31.Dt CD 9 32.Os FreeBSD 33.Sh NAME 34.Nm cd 35.Nd device driver for SCSI subsystem 36.Sh DESCRIPTION 37The 38.Nm 39device driver provides the 40.Tn SCSI 41subsystem a way to handle type 5 42.Pq Dv T_READONLY 43media. Some drives don't behave as the driver expects. See the section 44QUIRKS for info on possible flags. 45.Sh QUIRKS 46Each 47.Tn CD-ROM 48device can have different interpretations of the 49.Tn SCSI 50spec. This can lead to drives requiring special handling in the driver. The 51following is a list of quirks that the driver recognize. See 52.Xr scsiconf 9 53for more information on how to add quirk entries. 54.Bl -tag -width CD_Q_BCD_TRACKS 55.It Dv CD_Q_NO_TOUCH 56This flag tell the driver not to probe the drive at attach time to see if 57there is a disk in the drive and find out what size it is. 58.It Dv CD_Q_BCD_TRACKS 59This flag is for broken drives that return the track numbers in packed BCD 60instead of straight decimal. If the drive seems to skip tracks 61.Pq tracks 10-15 are skipped 62then you have a drive that is in need of this flag. 63.El 64.Sh FILES 65.Bl -tag -width /sys/scsi/scsiconf.h -compact 66.It Pa /sys/scsi/cd.c 67files contains actual driver code 68.It Pa /sys/scsi/scsiconf.h 69contains the defines of the 70.Dv CD_Q_xxx 71quirk flags 72.El 73.Sh SEE ALSO 74.Xr cd 4 , 75.Xr scsi 4 , 76.Xr scsiconf 9 77.Sh HISTORY 78The 79.Nm 80manual page first appeared in 81.Fx 2.2 . 82.Sh AUTHORS 83This 84manual page was written by 85.An John-Mark Gurney Aq gurney_j@efn.org . 86