scc_bfe_quicc.c revision 331722 
1/*-
2 * Copyright (c) 2006 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/11/sys/dev/scc/scc_bfe_quicc.c 331722 2018-03-29 02:50:57Z eadler $");
29
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/quicc/quicc_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
45static int
46scc_quicc_probe(device_t dev)
47{
48	device_t parent;
49	struct scc_softc *sc;
50	uintptr_t devtype, rclk;
51	int error;
52
53	parent = device_get_parent(dev);
54
55	error = BUS_READ_IVAR(parent, dev, QUICC_IVAR_DEVTYPE, &devtype);
56	if (error)
57		return (error);
58	if (devtype != QUICC_DEVTYPE_SCC)
59		return (ENXIO);
60
61	device_set_desc(dev, "QUICC quad channel SCC");
62
63	sc = device_get_softc(dev);
64	sc->sc_class = &scc_quicc_class;
65	if (BUS_READ_IVAR(parent, dev, QUICC_IVAR_BRGCLK, &rclk))
66		rclk = 0;
67	return (scc_bfe_probe(dev, 0, rclk, 0));
68}
69
70static int
71scc_quicc_attach(device_t dev)
72{
73
74	return (scc_bfe_attach(dev, 0));
75}
76
77static device_method_t scc_quicc_methods[] = {
78	/* Device interface */
79	DEVMETHOD(device_probe,		scc_quicc_probe),
80	DEVMETHOD(device_attach,	scc_quicc_attach),
81	DEVMETHOD(device_detach,	scc_bfe_detach),
82
83	DEVMETHOD(bus_alloc_resource,	scc_bus_alloc_resource),
84	DEVMETHOD(bus_release_resource,	scc_bus_release_resource),
85	DEVMETHOD(bus_get_resource,	scc_bus_get_resource),
86	DEVMETHOD(bus_read_ivar,	scc_bus_read_ivar),
87	DEVMETHOD(bus_setup_intr,	scc_bus_setup_intr),
88	DEVMETHOD(bus_teardown_intr,	scc_bus_teardown_intr),
89
90	DEVMETHOD_END
91};
92
93static driver_t scc_quicc_driver = {
94	scc_driver_name,
95	scc_quicc_methods,
96	sizeof(struct scc_softc),
97};
98
99DRIVER_MODULE(scc, quicc, scc_quicc_driver, scc_devclass, NULL, NULL);
100