1/*	$NetBSD: tsdio.c,v 1.13 2021/08/07 16:19:12 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 2005 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jesse Off
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: tsdio.c,v 1.13 2021/08/07 16:19:12 thorpej Exp $");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/device.h>
38
39#include <sys/bus.h>
40#include <sys/intr.h>
41
42#include <dev/isa/isareg.h>
43#include <dev/isa/isavar.h>
44#include <dev/isa/isadmavar.h>
45#include <dev/isa/tsdiovar.h>
46
47int	tsdio_probe(device_t, cfdata_t, void *);
48void	tsdio_attach(device_t, device_t, void *);
49int	tsdio_search(device_t, cfdata_t, const int *, void *);
50int	tsdio_print(void *, const char *);
51
52CFATTACH_DECL_NEW(tsdio, sizeof(struct tsdio_softc),
53    tsdio_probe, tsdio_attach, NULL, NULL);
54
55int
56tsdio_probe(device_t parent, cfdata_t cf, void *aux)
57{
58	struct isa_attach_args *ia = aux;
59	bus_space_tag_t iot = ia->ia_iot;
60	bus_space_handle_t dioh;
61	int rv = 0, have_io = 0;
62
63	if (ia->ia_nio < 1)
64		return (0);
65	if (ia->ia_nirq < 1)
66		return (0);
67
68	if (ISA_DIRECT_CONFIG(ia))
69		return (0);
70
71	/*
72	 * Disallow wildcarded I/O base.
73	 */
74	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
75		return (0);
76
77	/*
78	 * Map the I/O space.
79	 */
80	if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8,
81	    0, &dioh))
82		goto out;
83	have_io = 1;
84
85	if (bus_space_read_1(ia->ia_iot, dioh, 0) != 0x54) {
86		goto out;
87	}
88
89	rv = 1;
90	ia->ia_nio = 1;
91	ia->ia_io[0].ir_size = 8;
92	ia->ia_niomem = 0;
93	ia->ia_nirq = 0;
94	ia->ia_ndrq = 0;
95
96 out:
97	if (have_io)
98		bus_space_unmap(iot, dioh, 8);
99
100	return (rv);
101}
102
103void
104tsdio_attach(device_t parent, device_t self, void *aux)
105{
106	struct tsdio_softc *sc = device_private(self);
107	struct isa_attach_args *ia = aux;
108
109	sc->sc_iot = ia->ia_iot;
110
111	aprint_normal(": Technologic Systems TS-DIO24\n");
112
113	/*
114	 * Map the device.
115	 */
116	if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, 8,
117	    0, &sc->sc_ioh)) {
118		aprint_error_dev(self, "unable to map i/o space\n");
119		return;
120	}
121
122	/*
123	 *  Attach sub-devices
124	 */
125	config_search(self, NULL,
126	    CFARGS(.search = tsdio_search));
127}
128
129int
130tsdio_search(device_t parent, cfdata_t cf, const int *l, void *aux)
131{
132	struct tsdio_softc *sc = device_private(parent);
133	struct tsdio_attach_args sa;
134
135	sa.ta_iot = sc->sc_iot;
136	sa.ta_ioh = sc->sc_ioh;
137
138	if (config_probe(parent, cf, &sa))
139		config_attach(parent, cf, &sa, tsdio_print, CFARGS_NONE);
140
141	return (0);
142}
143
144int
145tsdio_print(void *aux, const char *name)
146{
147
148	return (UNCONF);
149}
150