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_resources 36.Nd activates or deactivates a resources 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.Fn bus_activate_resource "device_t dev" "int type" "int *rid" "struct resource *r" 46.Ft int 47.Fn bus_deactivate_resource "device_t dev" "int type" "int *rid" "struct resource *r" 48.Sh DESCRIPTION 49Activates or deactivates a previously allocated resource. 50In general, resources must be activated before they can be accessed by 51the driver so that the bus driver can map the resource into the 52devices space. 53.Pp 54Its arguments are as follows: 55.Bl -item 56.It 57.Fa dev 58is the device that requests ownership of the resource. 59Before allocation, the resource is owned by the parent bus. 60.It 61.Fa type 62is the type of resource you want to allocate. 63It is one of: 64.Bl -tag -width SYS_RES_MEMORY 65.It Dv SYS_RES_IRQ 66for IRQs 67.It Dv SYS_RES_DRQ 68for ISA DMA lines 69.It Dv SYS_RES_IOPORT 70for I/O ports 71.It Dv SYS_RES_MEMORY 72for I/O memory 73.El 74.It 75.Fa rid 76points to a bus specific handle that identifies the resource being allocated. 77.It 78.Fa r 79points to the 80.Ft struct resource 81returned by 82.Xr bus_alloc_resource 9 . 83.El 84.Sh RETURN VALUES 85Zero indicates success. 86Non-zero is an error from errno.h. 87.\".Sh EXAMPLES 88.\".Bd -literal 89.\".Ed 90.Sh SEE ALSO 91.Xr bus_alloc_resource 9 , 92.Xr device 9 , 93.Xr driver 9 94.Sh AUTHORS 95.An -nosplit 96This man page was written by 97.An Warner Losh Aq imp@FreeBSD.org . 98