1.\" Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa 2.\" 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. All advertising materials mentioning features or use of this software 13.\" must display the acknowledgement as bellow: 14.\" 15.\" This product includes software developed by K. Kobayashi 16.\" 17.\" 4. The name of the author may not be used to endorse or promote products 18.\" derived from this software without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 22.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 23.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 24.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 25.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 26.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 28.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30.\" POSSIBILITY OF SUCH DAMAGE. 31.\" 32.\" $FreeBSD$ 33.\" 34.Dd February 8, 2012 35.Dt SBP 4 36.Os 37.Sh NAME 38.Nm sbp 39.Nd Serial Bus Protocol 2 (SBP-2) Mass Storage Devices driver 40.Sh SYNOPSIS 41.Cd "kldload firewire" 42.Cd "kldload cam" 43.Cd "kldload sbp" 44.Pp 45or 46.Pp 47.Cd "device sbp" 48.Cd "device firewire" 49.Cd "device scbus" 50.Cd "device da" 51.Cd "device cd" 52.Cd "device pass" 53.Sh DESCRIPTION 54The 55.Nm 56driver provides support for SBP-2 devices that attach to the FireWire 57(IEEE 1394) port. 58It should work with SBP-2 devices which the CAM layer supports, for example, 59HDDs, CDROM drives and DVD drives. 60.Pp 61Some users familiar with 62.Xr umass 4 63might wonder why the device is not detached at the CAM layer when the device 64is unplugged. 65It is detached only if the device has not been plugged again 66during several bus resets. 67This is for preventing to detach an active file system 68even when the device cannot be probed correctly for some reason after a bus reset 69or when the device is temporary disconnected because the user changes the bus 70topology. 71If you want to force to detach the device, run 72.Dq Nm fwcontrol Fl r 73several times or set hw.firewire.hold_count=0 by 74.Xr sysctl 8 . 75.Pp 76Some (broken) HDDs do not work well with tagged queuing. 77If you have problems with such drives, try 78.Dq Nm camcontrol [device id] tags -N 1 79to disable tagged queuing. 80.Sh SEE ALSO 81.Xr cam 4 , 82.Xr firewire 4 , 83.Xr camcontrol 8 , 84.Xr fwcontrol 8 , 85.Xr kldload 8 , 86.Xr sysctl 8 87.Sh AUTHORS 88.An -nosplit 89The 90.Nm 91driver was written by 92.An Katsushi Kobayashi 93and 94.An Hidetoshi Shimokawa . 95.Pp 96This manual page was written by 97.An Katsushi Kobayashi . 98