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 $
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 <sys/machintr.h>
35
36 #include "isavar.h"
37
38 static void
isahint_add_device(device_t parent,const char * name,int unit)39 isahint_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, 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, -1);
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, -1);
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 machintr_legacy_intr_cpuid(start));
76 }
77
78 if (resource_int_value(name, unit, "drq", &start) == 0 && start >= 0)
79 bus_set_resource(child, SYS_RES_DRQ, 0, start, 1, -1);
80
81 if (resource_int_value(name, unit, "flags", &t) == 0)
82 device_set_flags(child, t);
83
84 if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0)
85 device_disable(child);
86 }
87
88 static int
isahint_identify(driver_t * driver,device_t parent)89 isahint_identify(driver_t *driver, device_t parent)
90 {
91 int i;
92 static char buf[] = "isaXXX";
93
94 /*
95 * If the parent bus is already attached we are being called to
96 * rescan. We do not suppot rescanning the hints, just return
97 * success.
98 */
99 if (device_get_state(parent) == DS_ATTACHED)
100 return(0);
101 if (device_get_state(parent) == DS_INPROGRESS)
102 return(0);
103
104 /*
105 * Add all devices configured to be attached to parent.
106 */
107 ksprintf(buf, "isa%d", device_get_unit(parent));
108 for (i = resource_query_string(-1, "at", buf);
109 i != -1;
110 i = resource_query_string(i, "at", buf)) {
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 * and isa?
120 */
121 for (i = resource_query_string(-1, "at", "isa");
122 i != -1;
123 i = resource_query_string(i, "at", "isa")) {
124 if (strcmp(resource_query_name(i), "atkbd") == 0)
125 continue; /* old GENERIC kludge */
126 isahint_add_device(parent,
127 resource_query_name(i),
128 resource_query_unit(i));
129 }
130 return(0);
131 }
132
133 static device_method_t isahint_methods[] = {
134 /* Device interface */
135 DEVMETHOD(device_identify, isahint_identify),
136
137 DEVMETHOD_END
138 };
139
140 static driver_t isahint_driver = {
141 "hint",
142 isahint_methods,
143 1, /* no softc */
144 };
145
146 /*
147 * This will cause the identify routine to be called for any isa bus
148 * attached to the system.
149 */
150 static devclass_t hint_devclass;
151
152 DRIVER_MODULE(isahint, isa, isahint_driver, hint_devclass, NULL, NULL);
153