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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/5.4/sys/isa/isahint.c 137357 2004-11-07 22:33:06Z njl $");
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>
35 #include <isa/isavar.h>
36 #include <machine/resource.h>
37
38 static void
39 isahint_add_device(device_t parent, const char *name, int unit)
40 {
41 device_t child;
42 int sensitive, start, count;
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_disabled(name, unit))
80 device_disable(child);
81 }
82
83 static void
84 isahint_identify(driver_t *driver, device_t parent)
85 {
86 int i;
87 static char buf[] = "isaXXX";
88 const char *dname;
89 int dunit;
90
91 /*
92 * Add all devices configured to be attached to parent.
93 */
94 sprintf(buf, "isa%d", device_get_unit(parent));
95 i = 0;
96 while ((resource_find_match(&i, &dname, &dunit, "at", buf)) == 0) {
97 if (strcmp(dname, "atkbd") == 0)
98 continue; /* old GENERIC kludge */
99 isahint_add_device(parent, dname, dunit);
100 }
101
102 /*
103 * and isa?
104 */
105 i = 0;
106 while ((resource_find_match(&i, &dname, &dunit, "at", "isa")) == 0) {
107 if (strcmp(dname, "atkbd") == 0)
108 continue; /* old GENERIC kludge */
109 isahint_add_device(parent, dname, dunit);
110 }
111 }
112
113 static device_method_t isahint_methods[] = {
114 /* Device interface */
115 DEVMETHOD(device_identify, isahint_identify),
116
117 { 0, 0 }
118 };
119
120 static driver_t isahint_driver = {
121 "hint",
122 isahint_methods,
123 1, /* no softc */
124 };
125
126 static devclass_t hint_devclass;
127
128 DRIVER_MODULE(isahint, isa, isahint_driver, hint_devclass, 0, 0);
Cache object: 59ff016134637856df21ab43e58a232e
|