1.\" Copyright (c) 1999 2.\" Nick Hibma <n_hibma@FreeBSD.org>. 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.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd January 27, 2020 28.Dt UMASS 4 29.Os 30.Sh NAME 31.Nm umass 32.Nd USB Mass Storage Devices driver 33.Sh SYNOPSIS 34To compile this driver into the kernel, 35place the following line in your 36kernel configuration file: 37.Bd -ragged -offset indent 38.Cd "device scbus" 39.Cd "device usb" 40.Cd "device umass" 41.Ed 42.Pp 43Alternatively, to load the driver as a 44module at boot time, place the following line in 45.Xr loader.conf 5 : 46.Bd -literal -offset indent 47umass_load="YES" 48.Ed 49.Sh DESCRIPTION 50The 51.Nm 52driver provides support for Mass Storage devices that attach to the USB 53port. 54.Pp 55To use the 56.Nm 57driver, 58.Xr usb 4 59and one of 60.Xr uhci 4 61or 62.Xr ohci 4 63or 64.Xr ehci 4 65or 66.Xr xhci 4 67must be configured in the kernel. 68Additionally, since 69.Nm 70uses the SCSI subsystem and sometimes acts as a SCSI device, it 71requires 72.Xr da 4 73and 74.Xr scbus 4 75to be included in the kernel. 76.Sh EXAMPLES 77.Bd -literal -offset indent 78device umass 79device scbus 80device da 81device pass 82.Ed 83.Pp 84Add the 85.Nm 86driver to the kernel. 87.Pp 88.Bd -literal -offset indent 89camcontrol rescan 0:0:0 90camcontrol rescan 0:0:1 91camcontrol rescan 0:0:2 92camcontrol rescan 0:0:3 93.Ed 94.Pp 95Rescan all slots on a multi-slot flash reader, where the slots map to separate 96LUNs on a single SCSI ID. 97Typically only the first slot will be enabled at boot time. 98This assumes that the flash reader is the first SCSI bus in the system and has 4 slots. 99.Sh SEE ALSO 100.Xr cfumass 4 , 101.Xr ehci 4 , 102.Xr ohci 4 , 103.Xr uhci 4 , 104.Xr usb 4 , 105.Xr xhci 4 , 106.Xr camcontrol 8 107.\".Sh HISTORY 108.Sh AUTHORS 109.An -nosplit 110The 111.Nm 112driver was written by 113.An MAEKAWA Masahide Aq Mt bishop@rr.iij4u.or.jp 114and 115.An Nick Hibma Aq Mt n_hibma@FreeBSD.org . 116.Pp 117This manual page was written by 118.An Nick Hibma Aq Mt n_hibma@FreeBSD.org . 119