scc_bfe_sbus.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2004-2006 Marcel Moolenaar
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: stable/11/sys/dev/scc/scc_bfe_sbus.c 330897 2018-03-14 03:19:51Z eadler $");
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/bus.h>
35#include <sys/conf.h>
36#include <sys/kernel.h>
37#include <sys/module.h>
38
39#include <dev/ofw/ofw_bus.h>
40
41#include <machine/bus.h>
42#include <sys/rman.h>
43#include <machine/resource.h>
44
45#include <dev/scc/scc_bfe.h>
46
47#define	SBUS_REGSHFT	1
48#define	SBUS_RCLK	307200
49
50static int
51scc_sbus_probe(device_t dev)
52{
53	struct scc_softc *sc;
54	const char *nm;
55
56	sc = device_get_softc(dev);
57	nm = ofw_bus_get_name(dev);
58	if (!strcmp(nm, "zs")) {
59		device_set_desc(dev, "Zilog Z8530 dual channel SCC");
60		sc->sc_class = &scc_z8530_class;
61		return (scc_bfe_probe(dev, SBUS_REGSHFT, SBUS_RCLK, 0));
62	}
63	return (ENXIO);
64}
65
66static int
67scc_sbus_attach(device_t dev)
68{
69
70	return (scc_bfe_attach(dev, 0));
71}
72
73static device_method_t scc_sbus_methods[] = {
74	/* Device interface */
75	DEVMETHOD(device_probe,		scc_sbus_probe),
76	DEVMETHOD(device_attach,	scc_sbus_attach),
77	DEVMETHOD(device_detach,	scc_bfe_detach),
78
79	DEVMETHOD(bus_alloc_resource,	scc_bus_alloc_resource),
80	DEVMETHOD(bus_release_resource,	scc_bus_release_resource),
81	DEVMETHOD(bus_get_resource,	scc_bus_get_resource),
82	DEVMETHOD(bus_read_ivar,	scc_bus_read_ivar),
83	DEVMETHOD(bus_setup_intr,	scc_bus_setup_intr),
84	DEVMETHOD(bus_teardown_intr,	scc_bus_teardown_intr),
85
86	DEVMETHOD_END
87};
88
89static driver_t scc_sbus_driver = {
90	scc_driver_name,
91	scc_sbus_methods,
92	sizeof(struct scc_softc),
93};
94
95DRIVER_MODULE(scc, fhc, scc_sbus_driver, scc_devclass, NULL, NULL);
96DRIVER_MODULE(scc, sbus, scc_sbus_driver, scc_devclass, NULL, NULL);
97