98 lines
3.2 KiB
Groff
98 lines
3.2 KiB
Groff
.\" Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the acknowledgement as bellow:
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.\"
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.\" This product includes software developed by K. Kobayashi
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.\"
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.\" 4. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd May 20, 2002
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.Dt SBP 4
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.Os
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.Sh NAME
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.Nm sbp
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.Nd Serial Bus Protocol 2 (SBP-2) Mass Storage Devices driver
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.Sh SYNOPSIS
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.Cd "kldload firewire"
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.Cd "kldload cam"
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.Cd "kldload sbp"
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.Pp
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or
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.Pp
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.Cd "device sbp"
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.Cd "device firewire"
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.Cd "device scbus"
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.Cd "device da"
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.Cd "device cd"
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.Cd "device pass"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for SBP-2 devices that attach to the FireWire
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(IEEE 1394) port.
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It should work with SBP-2 devices which the CAM layer supports, for example,
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HDDs, CDROM drives and DVD drives.
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.Pp
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Some users familiar with
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.Xr umass 4
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might wonder why the device is not detached at the CAM layer when the device
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is unplugged.
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It is detached only if the device has not been plugged again
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during several bus resets.
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This is for preventing to detach an active file system
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even when the device cannot be probed correctly for some reason after a bus reset
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or when the device is temporary disconnected because the user changes the bus
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topology.
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If you want to force to detach the device, run
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.Dq Nm fwcontrol Fl r
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several times or set hw.firewire.hold_count=0 by
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.Xr sysctl 1 .
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.Pp
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Some (broken) HDDs do not work well with tagged queuing.
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If you have problems with such drives, try
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.Dq Nm camcontrol [device id] tags -N 1
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to disable tagged queuing.
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.Sh SEE ALSO
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.Xr cam 4 ,
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.Xr firewire 4 ,
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.Xr camcontrol 8 ,
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.Xr fwcontrol 8 ,
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.Xr kldload 8 ,
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.Xr sysctl 8
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An Katsushi Kobayashi
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and
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.An Hidetoshi Shimokawa .
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.Pp
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This manual page was written by
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.An Katsushi Kobayashi .
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