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$FreeBSD: stable/11/share/man/man4/umass.4 362507 2020-06-22 19:09:47Z pstef $
.Dd January 27, 2020 .Dt UMASS 4 .Os .Sh NAME .Nm umass .Nd USB Mass Storage Devices driver .Sh SYNOPSIS To compile this driver into the kernel, place the following line in your kernel configuration file: d -ragged -offset indent .Cd "device scbus" .Cd "device usb" .Cd "device umass" .Ed
p Alternatively, to load the driver as a module at boot time, place the following line in .Xr loader.conf 5 : d -literal -offset indent umass_load="YES" .Ed .Sh DESCRIPTION The .Nm driver provides support for Mass Storage devices that attach to the USB port.
p To use the .Nm driver, .Xr usb 4 and one of .Xr uhci 4 or .Xr ohci 4 or .Xr ehci 4 or .Xr xhci 4 must be configured in the kernel. Additionally, since .Nm uses the SCSI subsystem and sometimes acts as a SCSI device, it requires .Xr da 4 and .Xr scbus 4 to be included in the kernel. .Sh EXAMPLES d -literal -offset indent device umass device scbus device da device pass .Ed
p Add the .Nm driver to the kernel.
p d -literal -offset indent camcontrol rescan 0:0:0 camcontrol rescan 0:0:1 camcontrol rescan 0:0:2 camcontrol rescan 0:0:3 .Ed
p
Rescan all slots on a multi-slot flash reader, where the slots map to separate
LUNs on a single SCSI ID.
Typically only the first slot will be enabled at boot time.
This assumes that the flash reader is the first SCSI bus in the system and has 4 slots.
.Sh SEE ALSO
.Xr cfumass 4 ,
.Xr ehci 4 ,
.Xr ohci 4 ,
.Xr uhci 4 ,
.Xr usb 4 ,
.Xr xhci 4 ,
.Xr camcontrol 8
.Sh HISTORY
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An MAEKAWA Masahide Aq Mt bishop@rr.iij4u.or.jp
and
.An Nick Hibma Aq Mt n_hibma@FreeBSD.org .
p This manual page was written by .An Nick Hibma Aq Mt n_hibma@FreeBSD.org .