2 * Copyright (c) 1999 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/sys/isa/isahint.c,v 1.8.2.1 2001/03/21 11:18:25 nyan Exp $
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/kernel.h>
33 #include <sys/module.h>
38 isahint_add_device(device_t parent, const char *name, int unit)
41 int sensitive, start, count, t;
44 /* device-specific flag overrides any wildcard */
46 if (resource_int_value(name, unit, "sensitive", &sensitive) != 0)
47 resource_int_value(name, -1, "sensitive", &sensitive);
50 order = ISA_ORDER_SENSITIVE;
52 order = ISA_ORDER_SPECULATIVE;
54 child = BUS_ADD_CHILD(parent, parent, order, name, unit);
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);
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);
72 if (resource_int_value(name, unit, "irq", &start) == 0 && start > 0)
73 bus_set_resource(child, SYS_RES_IRQ, 0, start, 1);
75 if (resource_int_value(name, unit, "drq", &start) == 0 && start >= 0)
76 bus_set_resource(child, SYS_RES_DRQ, 0, start, 1);
78 if (resource_int_value(name, unit, "flags", &t) == 0)
79 device_set_flags(child, t);
81 if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0)
82 device_disable(child);
86 isahint_identify(driver_t *driver, device_t parent)
89 static char buf[] = "isaXXX";
92 * If the parent bus is already attached we are being called to
93 * rescan. We do not suppot rescanning the hints, just return
96 if (device_get_state(parent) == DS_ATTACHED)
98 if (device_get_state(parent) == DS_INPROGRESS)
102 * Add all devices configured to be attached to parent.
104 ksprintf(buf, "isa%d", device_get_unit(parent));
105 for (i = resource_query_string(-1, "at", buf);
107 i = resource_query_string(i, "at", buf)) {
108 if (strcmp(resource_query_name(i), "atkbd") == 0)
109 continue; /* old GENERIC kludge */
110 isahint_add_device(parent,
111 resource_query_name(i),
112 resource_query_unit(i));
118 for (i = resource_query_string(-1, "at", "isa");
120 i = resource_query_string(i, "at", "isa")) {
121 if (strcmp(resource_query_name(i), "atkbd") == 0)
122 continue; /* old GENERIC kludge */
123 isahint_add_device(parent,
124 resource_query_name(i),
125 resource_query_unit(i));
130 static device_method_t isahint_methods[] = {
131 /* Device interface */
132 DEVMETHOD(device_identify, isahint_identify),
137 static driver_t isahint_driver = {
144 * This will cause the identify routine to be called for any isa bus
145 * attached to the system.
147 static devclass_t hint_devclass;
149 DRIVER_MODULE(isahint, isa, isahint_driver, hint_devclass, NULL, NULL);