1.\" 2.\" Copyright (c) 2008 3.\" The DragonFly Project. All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in 13.\" the documentation and/or other materials provided with the 14.\" distribution. 15.\" 3. Neither the name of The DragonFly Project nor the names of its 16.\" contributors may be used to endorse or promote products derived 17.\" from this software without specific, prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 25.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 27.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 28.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 29.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" $DragonFly: src/share/man/man9/bus_get_resource.9,v 1.1 2008/11/09 09:48:41 swildner Exp $ 33.\" 34.Dd November 9, 2008 35.Dt BUS_GET_RESOURCE 9 36.Os 37.Sh NAME 38.Nm bus_get_resource 39.Nd "read a resource range/value with a given resource ID" 40.Sh SYNOPSIS 41.In sys/param.h 42.In sys/bus.h 43.In sys/rman.h 44.Ft int 45.Fo bus_get_resource 46.Fa "device_t dev" "int type" "int rid" "u_long *startp" "u_long *countp" 47.Fc 48.Sh DESCRIPTION 49The 50.Fn bus_get_resource 51function reads the range or value of the resource 52.Fa type , rid 53pair and stores it in the 54.Fa startp 55and 56.Fa countp 57arguments. 58.Pp 59The arguments are as follows: 60.Bl -tag -width ".Fa startp" 61.It Fa dev 62The device to read the resource from. 63.It Fa type 64The type of resource you want to read. 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_MEMORY 73for I/O memory 74.It Dv SYS_RES_IOPORT 75for I/O ports 76.El 77.It Fa rid 78A bus-specific handle that identifies the resource being read. 79.It Fa startp 80A pointer to the start address of this resource. 81.It Fa countp 82A pointer to the length of the resource. 83For example, the size of the memory in bytes. 84.El 85.Sh RETURN VALUES 86Zero is returned on success, otherwise an error is returned. 87.Sh SEE ALSO 88.Xr bus_set_resource 9 , 89.Xr device 9 , 90.Xr driver 9 91