Line data Source code
1 : /* $OpenBSD: com_isa.c,v 1.9 2017/04/30 13:04:49 mpi 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/bus.h>
68 :
69 : #include <dev/ic/comreg.h>
70 : #include <dev/ic/comvar.h>
71 :
72 : #include <dev/isa/isavar.h>
73 :
74 : int com_isa_probe(struct device *, void *, void *);
75 : void com_isa_attach(struct device *, struct device *, void *);
76 :
77 : struct cfattach com_isa_ca = {
78 : sizeof(struct com_softc), com_isa_probe, com_isa_attach, NULL,
79 : com_activate
80 : };
81 :
82 : int
83 0 : com_isa_probe(struct device *parent, void *match, void *aux)
84 : {
85 0 : struct isa_attach_args *ia = aux;
86 0 : bus_space_handle_t ioh;
87 : bus_space_tag_t iot;
88 : int iobase;
89 : int rv;
90 :
91 0 : iot = ia->ia_iot;
92 0 : iobase = ia->ia_iobase;
93 :
94 0 : if (iobase == comconsaddr && !comconsattached)
95 : goto out;
96 :
97 0 : if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh))
98 0 : return (0);
99 :
100 0 : rv = comprobe1(iot, ioh);
101 :
102 0 : bus_space_unmap(iot, ioh, COM_NPORTS);
103 :
104 0 : if (rv == 0)
105 0 : return (0);
106 :
107 : out:
108 0 : ia->ia_iosize = COM_NPORTS;
109 0 : ia->ia_msize = 0;
110 0 : return (1);
111 0 : }
112 :
113 : void
114 0 : com_isa_attach(struct device *parent, struct device *self, void *aux)
115 : {
116 0 : struct com_softc *sc = (struct com_softc *)self;
117 0 : struct isa_attach_args *ia = aux;
118 0 : bus_space_handle_t ioh;
119 : bus_space_tag_t iot;
120 : int iobase, irq;
121 :
122 0 : sc->sc_hwflags = 0;
123 0 : sc->sc_swflags = 0;
124 :
125 0 : iobase = ia->ia_iobase;
126 0 : iot = ia->ia_iot;
127 :
128 0 : if (iobase != comconsaddr) {
129 0 : if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh))
130 0 : panic("com_isa_attach: mapping failed");
131 : } else {
132 0 : ioh = comconsioh;
133 : }
134 :
135 0 : sc->sc_iot = iot;
136 0 : sc->sc_ioh = ioh;
137 0 : sc->sc_iobase = iobase;
138 0 : sc->sc_frequency = COM_FREQ;
139 :
140 0 : com_attach_subr(sc);
141 :
142 0 : irq = ia->ia_irq;
143 0 : if (irq != IRQUNK) {
144 0 : sc->sc_ih = isa_intr_establish(ia->ia_ic, irq,
145 0 : IST_EDGE, IPL_TTY, comintr, sc,
146 0 : sc->sc_dev.dv_xname);
147 0 : }
148 0 : }
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