com_obio.c revision 1.10 
1/*	$NetBSD: com_obio.c,v 1.10 2010/04/28 13:51:55 kiyohara Exp $	*/
2
3/*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum.
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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*-
33 * Copyright (c) 1991 The Regents of the University of California.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 *    notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 *    notice, this list of conditions and the following disclaimer in the
43 *    documentation and/or other materials provided with the distribution.
44 * 3. Neither the name of the University nor the names of its contributors
45 *    may be used to endorse or promote products derived from this software
46 *    without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 *	@(#)com.c	7.5 (Berkeley) 5/16/91
61 */
62
63#include <sys/cdefs.h>
64__KERNEL_RCSID(0, "$NetBSD: com_obio.c,v 1.10 2010/04/28 13:51:55 kiyohara Exp $");
65
66#include <sys/param.h>
67#include <sys/systm.h>
68#include <sys/ioctl.h>
69#include <sys/select.h>
70#include <sys/tty.h>
71#include <sys/proc.h>
72#include <sys/conf.h>
73#include <sys/file.h>
74#include <sys/uio.h>
75#include <sys/kernel.h>
76#include <sys/syslog.h>
77#include <sys/types.h>
78#include <sys/device.h>
79#include <sys/termios.h>
80
81#include <machine/bus.h>
82#include <machine/intr.h>
83
84#include <dev/ic/comreg.h>
85#include <dev/ic/comvar.h>
86
87#include <dev/marvell/gtvar.h>
88
89#include "locators.h"
90
91struct com_obio_softc {
92	struct com_softc osc_com;	/* real "com" softc */
93
94	/* OBIO-specific goo. */
95};
96
97static int com_obio_match (device_t, cfdata_t , void *);
98static void com_obio_attach (device_t, device_t, void *);
99
100CFATTACH_DECL_NEW(com_obio, sizeof(struct com_obio_softc),
101    com_obio_match, com_obio_attach, NULL, NULL);
102
103int
104com_obio_match(device_t parent, cfdata_t cf, void *aux)
105{
106	struct obio_attach_args *oa = aux;
107	bus_space_handle_t ioh;
108	int rv = 0;
109
110	if (oa->oa_offset == OBIOCF_OFFSET_DEFAULT ||
111	    oa->oa_size == OBIOCF_SIZE_DEFAULT)
112		return (0);
113
114	if (com_is_console(oa->oa_memt, oa->oa_offset, NULL)) {
115		rv = 1;
116	} else {
117		if (bus_space_map(oa->oa_memt, oa->oa_offset,
118		    oa->oa_size, 0, &ioh))
119			return (0);
120		rv = comprobe1(oa->oa_memt, ioh);
121		bus_space_unmap(oa->oa_memt, ioh, oa->oa_size);
122	}
123
124	return (rv);
125}
126
127void
128com_obio_attach(device_t parent, device_t self, void *aux)
129{
130	struct com_obio_softc *osc = device_private(self);
131	struct com_softc *sc = &osc->osc_com;
132	struct obio_attach_args *oa = aux;
133	bus_space_handle_t ioh;
134
135	sc->sc_dev = self;
136	sc->sc_frequency = COM_FREQ*2;
137
138	if (!com_is_console(oa->oa_memt, oa->oa_offset, &ioh) &&
139	    bus_space_map(oa->oa_memt, oa->oa_offset, oa->oa_size,
140		0, &ioh) != 0) {
141		aprint_error(": can't map registers\n");
142		return;
143	}
144
145	COM_INIT_REGS(sc->sc_regs, oa->oa_memt, ioh, oa->oa_offset);
146	sc->sc_regs.cr_nports = oa->oa_size;
147	com_attach_subr(sc);
148
149	if (oa->oa_irq >= 0) {
150		intr_establish(oa->oa_irq, IST_EDGE, IPL_SERIAL, comintr, sc);
151		aprint_normal_dev(self, "interrupting at %d\n", oa->oa_irq);
152	}
153}
154