com_obio.c revision 1.9 
1/*	$NetBSD: com_obio.c,v 1.9 2005/12/11 12:17:09 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matt Thomas <matt@3am-software.com>.
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_obio.c,v 1.9 2005/12/11 12:17:09 christos Exp $");
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/device.h>
45#include <sys/termios.h>
46
47#include <machine/bus.h>
48
49#include <arm/xscale/i80321var.h>
50
51#include <evbarm/iq80321/obiovar.h>
52
53#include <dev/ic/comreg.h>
54#include <dev/ic/comvar.h>
55
56struct com_obio_softc {
57	struct com_softc sc_com;
58
59	void *sc_ih;
60};
61
62int	com_obio_match(struct device *, struct cfdata *, void *);
63void	com_obio_attach(struct device *, struct device *, void *);
64
65CFATTACH_DECL(com_obio, sizeof(struct com_obio_softc),
66    com_obio_match, com_obio_attach, NULL, NULL);
67
68int
69com_obio_match(struct device *parent, struct cfdata *cf, void *aux)
70{
71
72	/* We take it on faith that the device is there. */
73	return (1);
74}
75
76void
77com_obio_attach(struct device *parent, struct device *self, void *aux)
78{
79	struct obio_attach_args *oba = aux;
80	struct com_obio_softc *osc = (void *) self;
81	struct com_softc *sc = &osc->sc_com;
82	int error;
83
84	sc->sc_iot = oba->oba_st;
85	sc->sc_iobase = oba->oba_addr;
86	sc->sc_frequency = COM_FREQ;
87	sc->sc_hwflags = COM_HW_NO_TXPRELOAD;
88	error = bus_space_map(sc->sc_iot, oba->oba_addr, 8, 0, &sc->sc_ioh);
89
90	if (error) {
91		aprint_error(": failed to map registers: %d\n", error);
92		return;
93	}
94
95	com_attach_subr(sc);
96
97	osc->sc_ih = i80321_intr_establish(oba->oba_irq, IPL_SERIAL,
98	    comintr, sc);
99	if (osc->sc_ih == NULL)
100		aprint_error("%s: unable to establish interrupt at irq %d\n",
101		    sc->sc_dev.dv_xname, oba->oba_irq);
102}
103