1.\" $OpenBSD: config_attach.9,v 1.2 2014/07/13 10:09:12 jmc Exp $ 2.\" $NetBSD: autoconf.9,v 1.9 2002/02/13 08:18:35 ross Exp $ 3.\" 4.\" Copyright (c) 2001 The NetBSD Foundation, Inc. 5.\" All rights reserved. 6.\" 7.\" This code is derived from software contributed to The NetBSD Foundation 8.\" by Gregory McGarry. 9.\" 10.\" Redistribution and use in source and binary forms, with or without 11.\" modification, are permitted provided that the following conditions 12.\" are met: 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 2. Redistributions in binary form must reproduce the above copyright 16.\" notice, this list of conditions and the following disclaimer in the 17.\" documentation and/or other materials provided with the distribution. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29.\" POSSIBILITY OF SUCH DAMAGE. 30.\" 31.Dd $Mdocdate: July 13 2014 $ 32.Dt CONFIG_ATTACH 9 33.Os 34.Sh NAME 35.Nm config_attach, config_detach, config_detach_children 36.Nd attach and detach devices 37.Sh SYNOPSIS 38.In sys/param.h 39.In sys/device.h 40.Ft "struct device *" 41.Fn config_attach "struct device *parent" "void *cf" "void *aux" \ 42 "cfprint_t print" 43.Ft "int" 44.Fn config_detach "struct device *dev" "int flags" 45.Ft "int" 46.Fn config_detach_children "struct device *parent" "int flags" 47.Sh DESCRIPTION 48The 49.Fn config_attach 50function attaches a found device. 51Memory is allocated for the 52.Em softc 53structure and the driver's attach function is called according to the 54configuration table. 55If successful, 56.Fn config_attach 57returns the 58.Em softc . 59If unsuccessful, it returns 60.Dv NULL . 61.Pp 62The 63.Fn config_detach 64function is called by the parent to detach the child device. 65The second argument 66.Fa flags 67contains detachment flags: 68.Bd -literal 69#define DETACH_FORCE 0x01 /* Force detachment; hardware gone */ 70#define DETACH_QUIET 0x02 /* Don't print a notice */ 71.Ed 72.Sh CONTEXT 73.Fn config_detach 74is always called from process context, allowing 75.Xr tsleep 9 76to be called while the device detaches itself (to deal with processes 77which have a device open). 78.Sh RETURN VALUES 79.Fn config_detach 80returns zero if successful and an error code otherwise. 81.Sh SEE ALSO 82.Xr config_found 9 83