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.\" -*- nroff -*- .\" .\" Copyright (c) 2003 M. Warner Losh .\" .\" 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: release/9.1.0/share/man/man9/bus_activate_resource.9 115418 2003-05-30 21:13:32Z ru $ .\" .Dd March 28, 2003 .Dt BUS_ACTIVATE_RESOURCE 9 .Os .Sh NAME .Nm bus_activate_resource , bus_deactivate_resource .Nd activate or deactivate a resource .Sh SYNOPSIS .In sys/param.h .In sys/bus.h .Pp .In machine/bus.h .In sys/rman.h .In machine/resource.h .Ft int .Fo bus_activate_resource .Fa "device_t dev" "int type" "int rid" "struct resource *r" .Fc .Ft int .Fo bus_deactivate_resource .Fa "device_t dev" "int type" "int rid" "struct resource *r" .Fc .Sh DESCRIPTION These functions activate or deactivate a previously allocated resource. In general, resources must be activated before they can be accessed by the driver so that the bus driver can map the resource into the devices space. .Pp The arguments are as follows: .Bl -tag -width indent .It Fa dev The device that requests ownership of the resource. Before allocation, the resource is owned by the parent bus. .It Fa type The type of resource you want to allocate. It is one of: .Pp .Bl -tag -width ".Dv SYS_RES_MEMORY" -compact .It Dv SYS_RES_IRQ for IRQs .It Dv SYS_RES_DRQ for ISA DMA lines .It Dv SYS_RES_IOPORT for I/O ports .It Dv SYS_RES_MEMORY for I/O memory .El .It Fa rid A pointer to a bus specific handle that identifies the resource being allocated. .It Fa r A pointer to the .Vt "struct resource" returned by .Xr bus_alloc_resource 9 . .El .Sh RETURN VALUES Zero is returned on success, otherwise an error is returned. .Sh SEE ALSO .Xr bus_alloc_resource 9 , .Xr device 9 , .Xr driver 9 .Sh AUTHORS This manual page was written by .An Warner Losh Aq imp@FreeBSD.org .