1.\" $OpenBSD: config_attach.9,v 1.3 2014/12/05 16:55:53 schwarze 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: December 5 2014 $ 32.Dt CONFIG_ATTACH 9 33.Os 34.Sh NAME 35.Nm config_attach , 36.Nm config_detach , 37.Nm config_detach_children 38.Nd attach and detach devices 39.Sh SYNOPSIS 40.In sys/param.h 41.In sys/device.h 42.Ft "struct device *" 43.Fn config_attach "struct device *parent" "void *cf" "void *aux" \ 44 "cfprint_t print" 45.Ft "int" 46.Fn config_detach "struct device *dev" "int flags" 47.Ft "int" 48.Fn config_detach_children "struct device *parent" "int flags" 49.Sh DESCRIPTION 50The 51.Fn config_attach 52function attaches a found device. 53Memory is allocated for the 54.Em softc 55structure and the driver's attach function is called according to the 56configuration table. 57If successful, 58.Fn config_attach 59returns the 60.Em softc . 61If unsuccessful, it returns 62.Dv NULL . 63.Pp 64The 65.Fn config_detach 66function is called by the parent to detach the child device. 67The second argument 68.Fa flags 69contains detachment flags: 70.Bd -literal 71#define DETACH_FORCE 0x01 /* Force detachment; hardware gone */ 72#define DETACH_QUIET 0x02 /* Don't print a notice */ 73.Ed 74.Sh CONTEXT 75.Fn config_detach 76is always called from process context, allowing 77.Xr tsleep 9 78to be called while the device detaches itself (to deal with processes 79which have a device open). 80.Sh RETURN VALUES 81.Fn config_detach 82returns zero if successful and an error code otherwise. 83.Sh SEE ALSO 84.Xr config_found 9 85