com_cpcbus.c revision 1.9 
1/*	$NetBSD: com_cpcbus.c,v 1.9 2007/10/19 11:59:49 ad Exp $	*/
2
3/*
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Lennart Augustsson (lennart@augustsson.net) at Sandburst Corp.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#include <sys/cdefs.h>
40__KERNEL_RCSID(0, "$NetBSD: com_cpcbus.c,v 1.9 2007/10/19 11:59:49 ad Exp $");
41
42#include <sys/param.h>
43#include <sys/device.h>
44#include <sys/tty.h>
45#include <sys/systm.h>
46
47#include <sys/bus.h>
48
49#include <dev/ic/cpc700reg.h>
50#include <dev/ic/cpc700var.h>
51
52#include <dev/ic/comreg.h>
53#include <dev/ic/comvar.h>
54
55struct com_cpc_softc {
56	struct com_softc sc_com;
57	void *sc_ih;
58};
59
60static int	com_cpc_match(struct device *, struct cfdata *, void *);
61static void	com_cpc_attach(struct device *, struct device *, void *);
62
63CFATTACH_DECL(com_cpcbus, sizeof(struct com_cpc_softc),
64    com_cpc_match, com_cpc_attach, NULL, NULL);
65
66int
67com_cpc_match(struct device *parent, struct cfdata *cf, void *aux)
68{
69	struct cpcbus_attach_args *caa = aux;
70
71	return (strcmp(caa->cpca_name, "com") == 0);
72}
73
74void
75com_cpc_attach(struct device *parent, struct device *self, void *aux)
76{
77	struct cpcbus_attach_args *caa = aux;
78	struct com_cpc_softc *sc = (struct com_cpc_softc *)self;
79	int iobase = caa->cpca_addr;
80	int irq = caa->cpca_irq;
81	bus_space_handle_t ioh;
82
83	if (!com_is_console(caa->cpca_tag, iobase, &ioh) &&
84	    bus_space_map(caa->cpca_tag, iobase, COM_NPORTS, 0, &ioh)) {
85		printf("%s: can't map i/o space\n", self->dv_xname);
86		return;
87	}
88	COM_INIT_REGS(sc->sc_com.sc_regs, caa->cpca_tag, ioh, iobase);
89
90	sc->sc_com.sc_frequency = CPC_COM_SPEED(caa->cpca_freq);
91
92	com_attach_subr(&sc->sc_com);
93
94	sc->sc_ih = intr_establish(irq, IST_LEVEL, IPL_SERIAL, comintr,
95				   &sc->sc_com);
96}
97