Annotation of sys/dev/isa/com_isa.c, Revision 1.1.1.1
1.1 nbrk 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:
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