118 lines
3.1 KiB
Groff
118 lines
3.1 KiB
Groff
.\" Copyright (c) 1999
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.\" Nick Hibma <n_hibma@FreeBSD.org>. 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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR 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, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 27, 2020
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.Dt UMASS 4
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.Os
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.Sh NAME
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.Nm umass
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.Nd USB Mass Storage Devices driver
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following line in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device scbus"
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.Cd "device usb"
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.Cd "device umass"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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umass_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for Mass Storage devices that attach to the USB
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port.
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.Pp
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To use the
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.Nm
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driver,
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.Xr usb 4
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and one of
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.Xr uhci 4
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or
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.Xr ohci 4
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or
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.Xr ehci 4
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or
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.Xr xhci 4
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must be configured in the kernel.
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Additionally, since
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.Nm
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uses the SCSI subsystem and sometimes acts as a SCSI device, it
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requires
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.Xr da 4
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and
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.Xr scbus 4
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to be included in the kernel.
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.Sh EXAMPLES
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.Bd -literal -offset indent
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device umass
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device scbus
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device da
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device pass
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.Ed
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.Pp
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Add the
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.Nm
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driver to the kernel.
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.Bd -literal -offset indent
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camcontrol rescan 0:0:0
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camcontrol rescan 0:0:1
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camcontrol rescan 0:0:2
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camcontrol rescan 0:0:3
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.Ed
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.Pp
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Rescan all slots on a multi-slot flash reader, where the slots map to separate
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LUNs on a single SCSI ID.
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Typically only the first slot will be enabled at boot time.
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This assumes that the flash reader is the first SCSI bus in the system and has 4 slots.
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.Sh SEE ALSO
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.Xr cfumass 4 ,
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.Xr ehci 4 ,
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.Xr ohci 4 ,
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.Xr uhci 4 ,
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.Xr usb 4 ,
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.Xr xhci 4 ,
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.Xr camcontrol 8
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.\".Sh HISTORY
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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 MAEKAWA Masahide Aq Mt bishop@rr.iij4u.or.jp
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and
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.An Nick Hibma Aq Mt n_hibma@FreeBSD.org .
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.Pp
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This manual page was written by
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.An Nick Hibma Aq Mt n_hibma@FreeBSD.org .
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