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diff --git a/share/man/man9/devclass.9 b/share/man/man9/devclass.9 new file mode 100644 index 000000000000..d3e848e8d904 --- /dev/null +++ b/share/man/man9/devclass.9 @@ -0,0 +1,69 @@ +.\" -*- nroff -*- +.\" +.\" Copyright (c) 1998 Doug Rabson +.\" +.\" All rights reserved. +.\" +.\" This program is free software. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR +.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, +.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd June 16, 1998 +.Dt DEVCLASS 9 +.Os +.Sh NAME +.Nm devclass +.Nd object representing a class of devices +.Sh SYNOPSIS +.Vt typedef struct devclass *devclass_t ; +.Sh DESCRIPTION +The +.Vt devclass +object has two main functions in the system. +The first is to manage +the allocation of unit numbers for device instances and the second is +to hold the list of device drivers for a particular bus type. +Each +.Vt devclass +has a name and there cannot be two devclasses with the same name. +This ensures that unique unit numbers are allocated to device +instances. +.Pp +Beware that this means +.Vt devclass +must be the same for different bus attachments of the same device driver. +.Sh SEE ALSO +.Xr devclass_add_driver 9 , +.Xr devclass_delete_driver 9 , +.Xr devclass_find 9 , +.Xr devclass_find_driver 9 , +.Xr devclass_get_device 9 , +.Xr devclass_get_devices 9 , +.Xr devclass_get_maxunit 9 , +.Xr devclass_get_name 9 , +.Xr devclass_get_softc 9 , +.Xr device 9 , +.Xr driver 9 +.Sh AUTHORS +This manual page was written by +.An Doug Rabson . |