com_obio.c revision 1.5 
1/*	$NetBSD: com_obio.c,v 1.5 2008/03/14 15:09:09 cube 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 1.5 2008/03/14 15:09:09 cube 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/beccreg.h>
50#include <arm/xscale/beccvar.h>
51
52#include <evbarm/adi_brh/brhreg.h>
53#include <evbarm/adi_brh/obiovar.h>
54
55#include <dev/ic/comreg.h>
56#include <dev/ic/comvar.h>
57
58struct com_obio_softc {
59	struct com_softc sc_com;
60
61	void *sc_ih;
62};
63
64int	com_obio_match(device_t, cfdata_t , void *);
65void	com_obio_attach(device_t, device_t, void *);
66
67CFATTACH_DECL_NEW(com_obio, sizeof(struct com_obio_softc),
68    com_obio_match, com_obio_attach, NULL, NULL);
69
70int
71com_obio_match(device_t parent, cfdata_t cf, void *aux)
72{
73
74	/* We take it on faith that the device is there. */
75	return (1);
76}
77
78void
79com_obio_attach(device_t parent, device_t self, void *aux)
80{
81	struct obio_attach_args *oba = aux;
82	struct com_obio_softc *osc = device_private(self);
83	struct com_softc *sc = &osc->sc_com;
84	bus_space_handle_t ioh;
85	int error;
86
87	sc->sc_dev = self;
88	sc->sc_frequency = BECC_PERIPH_CLOCK;
89	sc->sc_hwflags = COM_HW_NO_TXPRELOAD;
90	error = bus_space_map(oba->oba_st, oba->oba_addr, 8, 0, &ioh);
91
92	if (error) {
93		aprint_error(": failed to map registers: %d\n", error);
94		return;
95	}
96	COM_INIT_REGS(sc->sc_regs, oba->oba_st, ioh, oba->oba_addr);
97
98	com_attach_subr(sc);
99
100	osc->sc_ih = becc_intr_establish(oba->oba_irq, IPL_SERIAL,
101	    comintr, sc);
102	if (osc->sc_ih == NULL)
103		aprint_error_dev(self,
104		    "unable to establish interrupt at irq %d\n", oba->oba_irq);
105}
106