John-Mark Gurney. All rights reserved.
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$Id: cd.9,v 1.6 1997/04/02 09:41:16 jmg Exp $
.Dd February 1, 1997 .Dt CD 9 .Os FreeBSD .Sh NAME .Nm cd .Nd device driver for SCSI subsystem .Sh DESCRIPTION The .Nm device driver provides the .Tn SCSI subsystem a way to handle type 5
q Dv T_READONLY media. Some drives don't behave as the driver expects. See the section QUIRKS for info on possible flags. .Sh QUIRKS Each .Tn CD-ROM device can have different interpretations of the .Tn SCSI spec. This can lead to drives requiring special handling in the driver. The following is a list of quirks that the driver recognize. See .Xr scsiconf 9 for more information on how to add quirk entries. l -tag -width CD_Q_BCD_TRACKS t Dv CD_Q_NO_TOUCH This flag tell the driver not to probe the drive at attach time to see if there is a disk in the drive and find out what size it is. t Dv CD_Q_BCD_TRACKS This flag is for broken drives that return the track numbers in packed BCD instead of straight decimal. If the drive seems to skip tracks
q tracks 10-15 are skipped then you have a drive that is in need of this flag. .El .Sh FILES l -tag -width /sys/scsi/scsiconf.h -compact t Pa /sys/scsi/cd.c files contains actual driver code t Pa /sys/scsi/scsiconf.h contains the defines of the .Dv CD_Q_xxx quirk flags .El .Sh SEE ALSO .Xr cd 4 , .Xr scsi 4 , .Xr scsiconf 9 .Sh HISTORY The .Nm manual page first appeared in .Fx 2.2 . .Sh AUTHORS This manual page was written by .An John-Mark Gurney Aq gurney_j@efn.org .