1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 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 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/bus.h>
33 #include <sys/conf.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36
37 #include <dev/ofw/ofw_bus.h>
38
39 #include <machine/bus.h>
40 #include <sys/rman.h>
41 #include <machine/resource.h>
42
43 #include <dev/scc/scc_bfe.h>
44
45 #define MACIO_REGSHFT 4
46 #define MACIO_RCLK 230400
47
48 static int
scc_macio_probe(device_t dev)49 scc_macio_probe(device_t dev)
50 {
51 struct scc_softc *sc;
52 const char *nm;
53
54 sc = device_get_softc(dev);
55 nm = ofw_bus_get_name(dev);
56 /* Attach to modern escc (channel shift 4 bits) */
57 if (!strcmp(nm, "escc")) {
58 device_set_desc(dev, "Zilog Z8530 dual channel SCC");
59 sc->sc_class = &scc_z8530_escc_class;
60 return (scc_bfe_probe(dev, MACIO_REGSHFT, MACIO_RCLK, 0));
61 }
62 return (ENXIO);
63 }
64
65 static int
scc_macio_attach(device_t dev)66 scc_macio_attach(device_t dev)
67 {
68
69 return (scc_bfe_attach(dev, 3));
70 }
71
72 static device_method_t scc_macio_methods[] = {
73 /* Device interface */
74 DEVMETHOD(device_probe, scc_macio_probe),
75 DEVMETHOD(device_attach, scc_macio_attach),
76 DEVMETHOD(device_detach, scc_bfe_detach),
77
78 DEVMETHOD(bus_alloc_resource, scc_bus_alloc_resource),
79 DEVMETHOD(bus_release_resource, scc_bus_release_resource),
80 DEVMETHOD(bus_get_resource, scc_bus_get_resource),
81 DEVMETHOD(bus_read_ivar, scc_bus_read_ivar),
82 DEVMETHOD(bus_setup_intr, scc_bus_setup_intr),
83 DEVMETHOD(bus_teardown_intr, scc_bus_teardown_intr),
84
85 DEVMETHOD_END
86 };
87
88 static driver_t scc_macio_driver = {
89 scc_driver_name,
90 scc_macio_methods,
91 sizeof(struct scc_softc),
92 };
93
94 DRIVER_MODULE(scc, macio, scc_macio_driver, NULL, NULL);
95