com_cpcbus.c revision 1.12 
1/*	$NetBSD: com_cpcbus.c,v 1.12 2018/12/08 17:46:13 thorpej 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 *
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#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: com_cpcbus.c,v 1.12 2018/12/08 17:46:13 thorpej Exp $");
34
35#include <sys/param.h>
36#include <sys/device.h>
37#include <sys/tty.h>
38#include <sys/systm.h>
39
40#include <sys/bus.h>
41
42#include <dev/ic/cpc700reg.h>
43#include <dev/ic/cpc700var.h>
44
45#include <dev/ic/comreg.h>
46#include <dev/ic/comvar.h>
47
48struct com_cpc_softc {
49	struct com_softc sc_com;
50	void *sc_ih;
51};
52
53static int	com_cpc_match(device_t, cfdata_t , void *);
54static void	com_cpc_attach(device_t, device_t, void *);
55
56CFATTACH_DECL_NEW(com_cpcbus, sizeof(struct com_cpc_softc),
57    com_cpc_match, com_cpc_attach, NULL, NULL);
58
59int
60com_cpc_match(device_t parent, cfdata_t cf, void *aux)
61{
62	struct cpcbus_attach_args *caa = aux;
63
64	return (strcmp(caa->cpca_name, "com") == 0);
65}
66
67void
68com_cpc_attach(device_t parent, device_t self, void *aux)
69{
70	struct cpcbus_attach_args *caa = aux;
71	struct com_cpc_softc *sc = device_private(self);
72	int iobase = caa->cpca_addr;
73	int irq = caa->cpca_irq;
74	bus_space_handle_t ioh;
75
76	sc->sc_com.sc_dev = self;
77
78	if (!com_is_console(caa->cpca_tag, iobase, &ioh) &&
79	    bus_space_map(caa->cpca_tag, iobase, COM_NPORTS, 0, &ioh)) {
80		aprint_error_dev(self, "can't map i/o space\n");
81		return;
82	}
83	com_init_regs(&sc->sc_com.sc_regs, caa->cpca_tag, ioh, iobase);
84
85	sc->sc_com.sc_frequency = CPC_COM_SPEED(caa->cpca_freq);
86
87	com_attach_subr(&sc->sc_com);
88
89	sc->sc_ih = intr_establish(irq, IST_LEVEL, IPL_SERIAL, comintr,
90				   &sc->sc_com);
91}
92