1 /* $OpenBSD: com_isa.c,v 1.4 2005/10/24 14:22:34 fgsch Exp $ */
2 /*
3 * Copyright (c) 1997 - 1999, Jason Downs. 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 * 3. Neither the name(s) of the author(s) nor the name OpenBSD
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
18 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29 /*-
30 * Copyright (c) 1993, 1994, 1995, 1996
31 * Charles M. Hannum. All rights reserved.
32 * Copyright (c) 1991 The Regents of the University of California.
33 * All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 * 1. Redistributions of source code must retain the above copyright
39 * notice, this list of conditions and the following disclaimer.
40 * 2. Redistributions in binary form must reproduce the above copyright
41 * notice, this list of conditions and the following disclaimer in the
42 * documentation and/or other materials provided with the distribution.
43 * 3. Neither the name of the University nor the names of its contributors
44 * may be used to endorse or promote products derived from this software
45 * without specific prior written permission.
46 *
47 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
48 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
50 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
51 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
52 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
53 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
54 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
55 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
56 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
57 * SUCH DAMAGE.
58 *
59 * @(#)com.c 7.5 (Berkeley) 5/16/91
60 */
61
62 #include <sys/param.h>
63 #include <sys/systm.h>
64 #include <sys/tty.h>
65 #include <sys/device.h>
66
67 #include <machine/intr.h>
68 #include <machine/bus.h>
69
70 #include <dev/ic/comreg.h>
71 #include <dev/ic/comvar.h>
72
73 #include <dev/isa/isavar.h>
74
75 int com_isa_probe(struct device *, void *, void *);
76 void com_isa_attach(struct device *, struct device *, void *);
77
78 struct cfattach com_isa_ca = {
79 sizeof(struct com_softc), com_isa_probe, com_isa_attach
80 };
81
82 int
83 com_isa_probe(struct device *parent, void *match, void *aux)
84 {
85 struct isa_attach_args *ia = aux;
86 bus_space_handle_t ioh;
87 bus_space_tag_t iot;
88 int iobase;
89 int rv;
90
91 iot = ia->ia_iot;
92 iobase = ia->ia_iobase;
93
94 #ifdef KGDB
95 if (iobase == com_kgdb_addr)
96 goto out;
97 #endif
98 if (iobase == comconsaddr && !comconsattached)
99 goto out;
100
101 if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh))
102 return (0);
103
104 rv = comprobe1(iot, ioh);
105
106 bus_space_unmap(iot, ioh, COM_NPORTS);
107
108 if (rv == 0)
109 return (0);
110
111 out:
112 ia->ia_iosize = COM_NPORTS;
113 ia->ia_msize = 0;
114 return (1);
115 }
116
117 void
118 com_isa_attach(struct device *parent, struct device *self, void *aux)
119 {
120 struct com_softc *sc = (struct com_softc *)self;
121 struct isa_attach_args *ia = aux;
122 bus_space_handle_t ioh;
123 bus_space_tag_t iot;
124 int iobase, irq;
125
126 sc->sc_hwflags = 0;
127 sc->sc_swflags = 0;
128
129 iobase = ia->ia_iobase;
130 iot = ia->ia_iot;
131
132 #ifdef KGBD
133 if ((iobase != comconsaddr) &&
134 (iobase != com_kgdb_addr)) {
135 #else
136 if (iobase != comconsaddr) {
137 #endif
138 if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh))
139 panic("com_isa_attach: mapping failed");
140 } else {
141 #ifdef KGDB
142 if (iobase == comconsaddr)
143 ioh = comconsioh;
144 else
145 ioh = com_kgdb_ioh;
146 #else
147 ioh = comconsioh;
148 #endif
149 }
150
151 sc->sc_iot = iot;
152 sc->sc_ioh = ioh;
153 sc->sc_iobase = iobase;
154 sc->sc_frequency = COM_FREQ;
155
156 com_attach_subr(sc);
157
158 irq = ia->ia_irq;
159 if (irq != IRQUNK) {
160 #ifdef KGDB
161 if (iobase == com_kgdb_addr) {
162 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq,
163 IST_EDGE, IPL_HIGH, kgdbintr, sc,
164 sc->sc_dev.dv_xname);
165 } else {
166 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq,
167 IST_EDGE, IPL_TTY, comintr, sc,
168 sc->sc_dev.dv_xname);
169 }
170 #else
171 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq,
172 IST_EDGE, IPL_TTY, comintr, sc,
173 sc->sc_dev.dv_xname);
174 #endif /* KGDB */
175 }
176 }
177