1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 2003 M. Warner Losh 4.\" 5.\" All rights reserved. 6.\" 7.\" This program is free software. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 19.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" 29.\" $FreeBSD$ 30.\" 31.Dd March 28, 2003 32.Dt BUS_ACTIVATE_RESOURCE 9 33.Os 34.Sh NAME 35.Nm bus_activate_resource , bus_deactivate_resource 36.Nd activate or deactivate a resource 37.Sh SYNOPSIS 38.In sys/param.h 39.In sys/bus.h 40.Pp 41.In machine/bus.h 42.In sys/rman.h 43.In machine/resource.h 44.Ft int 45.Fo bus_activate_resource 46.Fa "device_t dev" "int type" "int rid" "struct resource *r" 47.Fc 48.Ft int 49.Fo bus_deactivate_resource 50.Fa "device_t dev" "int type" "int rid" "struct resource *r" 51.Fc 52.Sh DESCRIPTION 53These functions activate or deactivate a previously allocated resource. 54In general, resources must be activated before they can be accessed by 55the driver so that the bus driver can map the resource into the 56devices space. 57.Pp 58The arguments are as follows: 59.Bl -tag -width indent 60.It Fa dev 61The device that requests ownership of the resource. 62Before allocation, the resource is owned by the parent bus. 63.It Fa type 64The type of resource you want to allocate. 65It is one of: 66.Pp 67.Bl -tag -width ".Dv SYS_RES_MEMORY" -compact 68.It Dv SYS_RES_IRQ 69for IRQs 70.It Dv SYS_RES_DRQ 71for ISA DMA lines 72.It Dv SYS_RES_IOPORT 73for I/O ports 74.It Dv SYS_RES_MEMORY 75for I/O memory 76.El 77.It Fa rid 78A pointer to a bus specific handle that identifies the resource being allocated. 79.It Fa r 80A pointer to the 81.Vt "struct resource" 82returned by 83.Xr bus_alloc_resource 9 . 84.El 85.Sh RETURN VALUES 86Zero is returned on success, otherwise an error is returned. 87.Sh SEE ALSO 88.Xr bus_alloc_resource 9 , 89.Xr device 9 , 90.Xr driver 9 91.Sh AUTHORS 92This manual page was written by 93.An Warner Losh Aq imp@FreeBSD.org . 94