$FreeBSD$

A small roadmap of the USB files:

FILES			this file
Makefile		to install .h files
Makefile.usbdevs	to run devlist2h.awk
TODO			just a list of things to do
devlist2h.awk		script to generate usbdevs*.h
files.usb		config inclued file
hid.c			subroutines to parse and access HID data
hid.h			API for hid.c
ohci.c			Host controller driver for OHCI
ohcireg.h		Hardware definitions for OHCI
ohcivar.h		API for ohci.c
uaudio.c		USB audio class driver
uaudioreg.h		  and definitions for it
ugen.c			generic driver that can handle access to any USB device
uhci.c			Host controller driver for UHCI
uhcireg.h		Hardware definitions for UHCI
uhcivar.h		API for uhci.c
uhid.c			USB HID class driver
uhub.c			USB hub driver
ukbd.c			USB keyboard driver
ukbdmap.c		wscons key mapping for ukbd
ukbdvar.h		API for ukbd.c
ulpt.c			USB printer class driver
umodem.c		USB modem (CDC ACM) driver
ums.c			USB mouse driver
usb.c			usb (bus) device driver
usb.h			general USB defines
usb_mem.c		memory allocation for DMAable memory
usb_mem.h		API for usb_mem.c
usb_port.h		compatibility defines for different OSs
usb_quirks.c		table of non-conforming USB devices and their problems
usb_quirks.h		API for usb_quirks.c
usb_subr.c		various subroutines used by USB code
usbcdc.h		USB CDC class definitions
usbdevs			data base of known device
usbdevs.h		generated from usbdevs
usbdevs_data.h		generated from usbdevs
usbdi.c			implementation of the USBDI API, which all drivers use
usbdi.h			API for usbdi.c
usbdi_util.c		utilities built on top of usbdi.h
usbdi_util.h		API for usbdi_util.c
usbdivar.h		internal defines and structures for usbdi.c
usbhid.h		USB HID class definitions