xref: /freebsd/share/man/man9/resource_int_value.9 (revision 39beb93c3f8bdbf72a61fda42300b5ebed7390c8)
1.\" -*- nroff -*-
2.\"
3.\" Copyright (c) 2001 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 1, 2001
32.Dt RESOURCE_INT_VALUE 9
33.Os
34.Sh NAME
35.Nm resource_int_value , resource_long_value , resource_string_value
36.Nd get a value from the hints mechanism
37.Sh SYNOPSIS
38.In sys/param.h
39.In sys/bus.h
40.Ft int
41.Fn resource_int_value "const char *name" "int unit" "const char *resname" "int *result"
42.Ft int
43.Fn resource_long_value "const char *name" "int unit" "const char *resname" "long *result"
44.Ft int
45.Fn resource_string_value "const char *name" "int unit" "const char *resname" "const char **result"
46.Sh DESCRIPTION
47These functions fetch a value from the
48.Dq hints
49mechanism.
50.Pp
51The functions take the following arguments:
52.Bl -tag -width "resname"
53.It Fa name
54The name of the device to get the resource value from.
55.It Fa unit
56The unit number of the device.
57\-1 is special and is used for wildcard entries.
58.It Fa resname
59The resource name.
60.It Fa result
61A pointer to memory in which to store the resource value.
62.El
63.Sh RETURN VALUES
64If successful, the functions return 0.
65Otherwise, a non\-zero error code is returned.
66.Sh ERRORS
67The functions will fail if:
68.Bl -tag -width Er
69.It Bq Er ENOENT
70The resource could not be found.
71.It Bq Er EFTYPE
72Inappropriate resource type.
73.El
74.Sh SEE ALSO
75.Xr device 9 ,
76.Xr driver 9
77.Sh AUTHORS
78This manual page was written by
79.An Warner Losh Aq imp@FreeBSD.org .
80