xref: /freebsd/sys/isa/isahint.c (revision 6990ffd8a95caaba6858ad44ff1b3157d1efba8f)
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  * $FreeBSD$
27  */
28 
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/kernel.h>
32 #include <sys/bus.h>
33 #include <sys/module.h>
34 #include <isa/isavar.h>
35 #include <machine/resource.h>
36 
37 static void
38 isahint_add_device(device_t parent, const char *name, int unit)
39 {
40 	device_t	child;
41 	int		sensitive, start, count, t;
42 	int		order;
43 
44 	/* device-specific flag overrides any wildcard */
45 	sensitive = 0;
46 	if (resource_int_value(name, unit, "sensitive", &sensitive) != 0)
47 		resource_int_value(name, -1, "sensitive", &sensitive);
48 
49 	if (sensitive)
50 		order = ISA_ORDER_SENSITIVE;
51 	else
52 		order = ISA_ORDER_SPECULATIVE;
53 
54 	child = BUS_ADD_CHILD(parent, order, name, unit);
55 	if (child == 0)
56 		return;
57 
58 	start = 0;
59 	count = 0;
60 	resource_int_value(name, unit, "port", &start);
61 	resource_int_value(name, unit, "portsize", &count);
62 	if (start > 0 || count > 0)
63 		bus_set_resource(child, SYS_RES_IOPORT, 0, start, count);
64 
65 	start = 0;
66 	count = 0;
67 	resource_int_value(name, unit, "maddr", &start);
68 	resource_int_value(name, unit, "msize", &count);
69 	if (start > 0 || count > 0)
70 		bus_set_resource(child, SYS_RES_MEMORY, 0, start, count);
71 
72 	if (resource_int_value(name, unit, "irq", &start) == 0 && start > 0)
73 		bus_set_resource(child, SYS_RES_IRQ, 0, start, 1);
74 
75 	if (resource_int_value(name, unit, "drq", &start) == 0 && start >= 0)
76 		bus_set_resource(child, SYS_RES_DRQ, 0, start, 1);
77 
78 	if (resource_int_value(name, unit, "flags", &t) == 0)
79 		device_set_flags(child, t);
80 
81 	if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0)
82 		device_disable(child);
83 }
84 
85 static void
86 isahint_identify(driver_t *driver, device_t parent)
87 {
88 	int i;
89 	static char buf[] = "isaXXX";
90 	const char *dname;
91 	int dunit;
92 
93 	/*
94 	 * Add all devices configured to be attached to parent.
95 	 */
96 	sprintf(buf, "isa%d", device_get_unit(parent));
97 	i = 0;
98 	while ((resource_find_match(&i, &dname, &dunit, "at", buf)) == 0) {
99 		if (strcmp(dname, "atkbd") == 0)
100 			continue;	/* old GENERIC kludge */
101 		isahint_add_device(parent, dname, dunit);
102 	}
103 
104 	/*
105 	 * and isa?
106 	 */
107 	i = 0;
108 	while ((resource_find_match(&i, &dname, &dunit, "at", "isa")) == 0) {
109 		if (strcmp(dname, "atkbd") == 0)
110 			continue;	/* old GENERIC kludge */
111 		isahint_add_device(parent, dname, dunit);
112 	}
113 }
114 
115 static device_method_t isahint_methods[] = {
116 	/* Device interface */
117 	DEVMETHOD(device_identify,	isahint_identify),
118 
119 	{ 0, 0 }
120 };
121 
122 static driver_t isahint_driver = {
123 	"hint",
124 	isahint_methods,
125 	1,			/* no softc */
126 };
127 
128 static devclass_t hint_devclass;
129 
130 DRIVER_MODULE(isahint, isa, isahint_driver, hint_devclass, 0, 0);
131