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download PDF document: usb_template.4.pdf

USB_TEMPLATE(4) FreeBSD Kernel Interfaces Manual USB_TEMPLATE(4)
NAME usb_template - USB device side templates
SYNOPSIS To compile this module into the kernel, place the following line in your kernel configuration file:
device usb_template
To load the module at boot time, place the following line in loader.conf(5):
usb_template_load="YES"
DESCRIPTION The usb_template module implements various USB templates that are needed when programming an USB device side driver. A USB template consists of an USB device descriptor, one or more USB configuration descriptors, one or more USB interface descriptors, one or more USB endpoint descriptors, USB strings and additional USB descriptors. USB templates are selected using the hw.usb.template sysctl and tunable, or by using the usbconfig(8) set_template subcommand. Changing the hw.usb.template sysctl triggers reenumeration by the USB host; changes to other sysctls may not be visible to the host until reenumeration is performed.
Available templates are:
Value Description 0 USB Mass Storage, see cfumass(4) 1 CDC Ethernet, see cdce(4) 2 Media Transfer Protocol (MTP) 3 USB serial port, see umodem(4) 4 USB audio 5 USB keyboard 6 USB mouse 7 USB phone 8 CDC Ethernet and serial port 9 USB MIDI 10 CDC Ethernet, serial port, and storage 11 CDC Ethernet Emulation Model, see cdceem(4)
SYSCTL VARIABLES The following variables are available as both sysctl(8) variables and loader(8) tunables:
hw.usb.template Currently selected template. Set to -1 to make the device disappear from the USB host point of view.
hw.usb.template_power USB bus power consumption in mA at 5V. Must be between 0 and 500. Setting to 0 marks the device as self-powered. Defaults to 500mA.
hw.usb.templates.N Configuration for template number N.
String containing human-readable manufacturer name.
hw.usb.templates.N.product String containing human-readable product name.
SEE ALSO cfumass(4), usb(4), usfs(4), usbconfig(8)
STANDARDS The usb_template module complies to the USB 1.0, 2.0 and 3.0 standard.
HISTORY The usb_template module was written by Hans Petter Selasky <hselasky@FreeBSD.org>.
FreeBSD 14.2-RELEASE August 7, 2019 FreeBSD 14.2-RELEASE