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[dragonfly.git] / sys / bus / isa / isahint.c
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1/*-
2 * Copyright (c) 1999 Doug Rabson
3 * 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 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/isa/isahint.c,v 1.8.2.1 2001/03/21 11:18:25 nyan Exp $
1f2de5d4 27 * $DragonFly: src/sys/bus/isa/isahint.c,v 1.3 2003/08/07 21:16:46 dillon Exp $
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28 */
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/kernel.h>
33#include <sys/bus.h>
34#include <sys/module.h>
1f2de5d4 35#include "isavar.h"
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36#include <machine/resource.h>
37
38static void
39isahint_add_device(device_t parent, const char *name, int unit)
40{
41 device_t child;
42 int sensitive, start, count, t;
43 int order;
44
45 /* device-specific flag overrides any wildcard */
46 sensitive = 0;
47 if (resource_int_value(name, unit, "sensitive", &sensitive) != 0)
48 resource_int_value(name, -1, "sensitive", &sensitive);
49
50 if (sensitive)
51 order = ISA_ORDER_SENSITIVE;
52 else
53 order = ISA_ORDER_SPECULATIVE;
54
55 child = BUS_ADD_CHILD(parent, order, name, unit);
56 if (child == 0)
57 return;
58
59 start = 0;
60 count = 0;
61 resource_int_value(name, unit, "port", &start);
62 resource_int_value(name, unit, "portsize", &count);
63 if (start > 0 || count > 0)
64 bus_set_resource(child, SYS_RES_IOPORT, 0, start, count);
65
66 start = 0;
67 count = 0;
68 resource_int_value(name, unit, "maddr", &start);
69 resource_int_value(name, unit, "msize", &count);
70 if (start > 0 || count > 0)
71 bus_set_resource(child, SYS_RES_MEMORY, 0, start, count);
72
73 if (resource_int_value(name, unit, "irq", &start) == 0 && start > 0)
74 bus_set_resource(child, SYS_RES_IRQ, 0, start, 1);
75
76 if (resource_int_value(name, unit, "drq", &start) == 0 && start >= 0)
77 bus_set_resource(child, SYS_RES_DRQ, 0, start, 1);
78
79 if (resource_int_value(name, unit, "flags", &t) == 0)
80 device_set_flags(child, t);
81
82 if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0)
83 device_disable(child);
84}
85
86static void
87isahint_identify(driver_t *driver, device_t parent)
88{
89 int i;
90 static char buf[] = "isaXXX";
91
92 /*
93 * Add all devices configured to be attached to parent.
94 */
95 sprintf(buf, "isa%d", device_get_unit(parent));
96 for (i = resource_query_string(-1, "at", buf);
97 i != -1;
98 i = resource_query_string(i, "at", buf)) {
99 if (strcmp(resource_query_name(i), "atkbd") == 0)
100 continue; /* old GENERIC kludge */
101 isahint_add_device(parent,
102 resource_query_name(i),
103 resource_query_unit(i));
104 }
105
106 /*
107 * and isa?
108 */
109 for (i = resource_query_string(-1, "at", "isa");
110 i != -1;
111 i = resource_query_string(i, "at", "isa")) {
112 if (strcmp(resource_query_name(i), "atkbd") == 0)
113 continue; /* old GENERIC kludge */
114 isahint_add_device(parent,
115 resource_query_name(i),
116 resource_query_unit(i));
117 }
118}
119
120static device_method_t isahint_methods[] = {
121 /* Device interface */
122 DEVMETHOD(device_identify, isahint_identify),
123
124 { 0, 0 }
125};
126
127static driver_t isahint_driver = {
128 "hint",
129 isahint_methods,
130 1, /* no softc */
131};
132
133static devclass_t hint_devclass;
134
135DRIVER_MODULE(isahint, isa, isahint_driver, hint_devclass, 0, 0);