FreeBSD/Linux Kernel Cross Reference
sys/isa/isahint.c
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
91 /*
92 * Add all devices configured to be attached to parent.
93 */
94 sprintf(buf, "isa%d", device_get_unit(parent));
95 for (i = resource_query_string(-1, "at", buf);
96 i != -1;
97 i = resource_query_string(i, "at", buf)) {
98 if (strcmp(resource_query_name(i), "atkbd") == 0)
99 continue; /* old GENERIC kludge */
100 isahint_add_device(parent,
101 resource_query_name(i),
102 resource_query_unit(i));
103 }
104
105 /*
106 * and isa?
107 */
108 for (i = resource_query_string(-1, "at", "isa");
109 i != -1;
110 i = resource_query_string(i, "at", "isa")) {
111 if (strcmp(resource_query_name(i), "atkbd") == 0)
112 continue; /* old GENERIC kludge */
113 isahint_add_device(parent,
114 resource_query_name(i),
115 resource_query_unit(i));
116 }
117 }
118
119 static device_method_t isahint_methods[] = {
120 /* Device interface */
121 DEVMETHOD(device_identify, isahint_identify),
122
123 { 0, 0 }
124 };
125
126 static driver_t isahint_driver = {
127 "hint",
128 isahint_methods,
129 1, /* no softc */
130 };
131
132 static devclass_t hint_devclass;
133
134 DRIVER_MODULE(isahint, isa, isahint_driver, hint_devclass, 0, 0);
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