1*86d7f5d3SJohn Marino.\" Copyright (c) 1998 Doug Rabson 2*86d7f5d3SJohn Marino.\" 3*86d7f5d3SJohn Marino.\" All rights reserved. 4*86d7f5d3SJohn Marino.\" 5*86d7f5d3SJohn Marino.\" This program is free software. 6*86d7f5d3SJohn Marino.\" 7*86d7f5d3SJohn Marino.\" Redistribution and use in source and binary forms, with or without 8*86d7f5d3SJohn Marino.\" modification, are permitted provided that the following conditions 9*86d7f5d3SJohn Marino.\" are met: 10*86d7f5d3SJohn Marino.\" 1. Redistributions of source code must retain the above copyright 11*86d7f5d3SJohn Marino.\" notice, this list of conditions and the following disclaimer. 12*86d7f5d3SJohn Marino.\" 2. Redistributions in binary form must reproduce the above copyright 13*86d7f5d3SJohn Marino.\" notice, this list of conditions and the following disclaimer in the 14*86d7f5d3SJohn Marino.\" documentation and/or other materials provided with the distribution. 15*86d7f5d3SJohn Marino.\" 16*86d7f5d3SJohn Marino.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 17*86d7f5d3SJohn Marino.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18*86d7f5d3SJohn Marino.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19*86d7f5d3SJohn Marino.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 20*86d7f5d3SJohn Marino.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21*86d7f5d3SJohn Marino.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22*86d7f5d3SJohn Marino.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23*86d7f5d3SJohn Marino.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24*86d7f5d3SJohn Marino.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25*86d7f5d3SJohn Marino.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26*86d7f5d3SJohn Marino.\" 27*86d7f5d3SJohn Marino.\" $FreeBSD: src/share/man/man9/devclass.9,v 1.4.2.3 2001/08/17 13:08:54 ru Exp $ 28*86d7f5d3SJohn Marino.\" $DragonFly: src/share/man/man9/devclass.9,v 1.3 2004/06/01 11:36:53 hmp Exp $ 29*86d7f5d3SJohn Marino.\" 30*86d7f5d3SJohn Marino.Dd June 16, 1998 31*86d7f5d3SJohn Marino.Dt DEVCLASS 9 32*86d7f5d3SJohn Marino.Os 33*86d7f5d3SJohn Marino.Sh NAME 34*86d7f5d3SJohn Marino.Nm devclass 35*86d7f5d3SJohn Marino.Nd object representing a class of devices 36*86d7f5d3SJohn Marino.Sh SYNOPSIS 37*86d7f5d3SJohn Marino.Vt typedef struct devclass *devclass_t ; 38*86d7f5d3SJohn Marino.Sh DESCRIPTION 39*86d7f5d3SJohn MarinoThe 40*86d7f5d3SJohn Marino.Dv devclass 41*86d7f5d3SJohn Marinoobject has two main functions in the system. The first is to manage 42*86d7f5d3SJohn Marinothe allocation of unit numbers for device instances and the second is 43*86d7f5d3SJohn Marinoto hold the list of device drivers for a particular bus type. 44*86d7f5d3SJohn MarinoEach 45*86d7f5d3SJohn Marino.Dv devclass 46*86d7f5d3SJohn Marinohas a name and there cannot be two devclasses with the same name. 47*86d7f5d3SJohn MarinoThis ensures that unique unit numbers are allocated to device 48*86d7f5d3SJohn Marinoinstances. 49*86d7f5d3SJohn Marino.Sh SEE ALSO 50*86d7f5d3SJohn Marino.Xr devclass_add_driver 9 , 51*86d7f5d3SJohn Marino.Xr devclass_delete_driver 9 , 52*86d7f5d3SJohn Marino.Xr devclass_find 9 , 53*86d7f5d3SJohn Marino.Xr devclass_find_driver 9 , 54*86d7f5d3SJohn Marino.Xr devclass_get_device 9 , 55*86d7f5d3SJohn Marino.Xr devclass_get_devices 9 , 56*86d7f5d3SJohn Marino.Xr devclass_get_maxunit 9 , 57*86d7f5d3SJohn Marino.Xr devclass_get_name 9 , 58*86d7f5d3SJohn Marino.Xr devclass_get_softc 9 , 59*86d7f5d3SJohn Marino.Xr device 9 , 60*86d7f5d3SJohn Marino.Xr driver 9 61*86d7f5d3SJohn Marino.Sh AUTHORS 62*86d7f5d3SJohn MarinoThis man page was written by 63*86d7f5d3SJohn Marino.An Doug Rabson . 64