cf52a55829
hw.usb.template_power sysctl to control it. Reviewed by: hselasky@ (earlier version) MFC after: 2 weeks Sponsored by: The FreeBSD Foundation
134 lines
3.9 KiB
Groff
134 lines
3.9 KiB
Groff
.\" $FreeBSD$
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.\"
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.\" Copyright (c) 2008 Hans Petter Selasky. 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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.Dd May 23, 2018
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.Dt USB_TEMPLATE 4
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.Os
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.
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.Sh NAME
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.
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.
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.Nm usb_template
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.
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.Nd "USB device side templates"
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.
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.
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.Sh SYNOPSIS
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To compile this module into the kernel, place the following line in
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your kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device usb_template"
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.Ed
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.Pp
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To load the 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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usb_template_load="YES"
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.Ed
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.
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.Sh DESCRIPTION
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The
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.Nm
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module implements various USB templates that are needed when
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programming an USB device side driver.
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.
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A USB template consists of an USB device descriptor, one or more USB
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configuration descriptors, one or more USB interface descriptors, one
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or more USB endpoint descriptors, USB strings and additional USB
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descriptors.
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.
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USB templates are selected using the
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.Va hw.usb.template
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sysctl and tunable,
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or by using the
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.Xr usbconfig 8
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.Cm set_template
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subcommand.
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Changing the
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.Va hw.usb.template
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sysctl triggers reenumeration by the USB host; changes to other sysctls
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may not be visible to the host until reenumeration is performed.
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.Pp
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Available templates are:
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.Bl -column -offset 3n "Value"
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.It Em Value Ta Em Description
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.It Dv 0 Ta USB Mass Storage, see
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.Xr cfumass 4
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.It Dv 1 Ta CDC Ethernet, see
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.Xr cdce 4
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.It Dv 2 Ta Media Transfer Protocol (MTP)
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.It Dv 3 Ta USB serial port, see
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.Xr umodem 4
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.It Dv 4 Ta USB audio
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.It Dv 5 Ta USB keyboard
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.It Dv 6 Ta USB mouse
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.It Dv 7 Ta USB phone
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.It Dv 8 Ta CDC Ethernet and serial port
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.It Dv 9 Ta USB MIDI
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.It Dv 10 Ta CDC Ethernet, serial port, and storage
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.El
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.
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.Sh SYSCTL VARIABLES
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The following variables are available as both
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.Xr sysctl 8
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variables and
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.Xr loader 8
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tunables:
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.Bl -tag -width indent
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.It Va hw.usb.template
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Currently selected template.
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Set to -1 to make the device disappear from the USB host point of view.
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.It Va hw.usb.template_power
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USB bus power consumption in mA.
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Must be between 0 and 500.
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Setting to 0 marks the device as self-powered.
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Defaults to 500mA.
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.It Va hw.usb.templates.N
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Configuration for template number
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.Va N .
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.It Va hw.usb.templates.N.vendor_id
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16-bit vendor identifier (VID), usually assigned by USB-IF.
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.It Va hw.usb.templates.N.product_id
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16-bit product identifier (PID).
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.It Va hw.usb.templates.N.manufacturer
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String containing human-readable manufacturer name.
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.It Va hw.usb.templates.N.product
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String containing human-readable product name.
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.El
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.Sh SEE ALSO
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.Xr cfumass 4 ,
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.Xr usb 4 ,
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.Xr usfs 4 ,
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.Xr usbconfig 8
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.Sh STANDARDS
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The
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.Nm
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module complies to the USB 1.0, 2.0 and 3.0 standard.
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.Sh HISTORY
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The
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.Nm
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module was written by
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.An Hans Petter Selasky Aq Mt hselasky@FreeBSD.org .
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