xref: /freebsd/sys/dev/scc/scc_bfe_quicc.c (revision bb15ca603fa442c72dde3f3cb8b46db6970e3950)
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("$FreeBSD$");
29 
30 #define	__RMAN_RESOURCE_VISIBLE
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/quicc/quicc_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 static int
48 scc_quicc_probe(device_t dev)
49 {
50 	device_t parent;
51 	struct scc_softc *sc;
52 	uintptr_t devtype, rclk;
53 	int error;
54 
55 	parent = device_get_parent(dev);
56 
57 	error = BUS_READ_IVAR(parent, dev, QUICC_IVAR_DEVTYPE, &devtype);
58 	if (error)
59 		return (error);
60 	if (devtype != QUICC_DEVTYPE_SCC)
61 		return (ENXIO);
62 
63 	device_set_desc(dev, "QUICC quad channel SCC");
64 
65 	sc = device_get_softc(dev);
66 	sc->sc_class = &scc_quicc_class;
67 	if (BUS_READ_IVAR(parent, dev, QUICC_IVAR_BRGCLK, &rclk))
68 		rclk = 0;
69 	return (scc_bfe_probe(dev, 0, rclk, 0));
70 }
71 
72 static int
73 scc_quicc_attach(device_t dev)
74 {
75 
76 	return (scc_bfe_attach(dev, 0));
77 }
78 
79 static device_method_t scc_quicc_methods[] = {
80 	/* Device interface */
81 	DEVMETHOD(device_probe,		scc_quicc_probe),
82 	DEVMETHOD(device_attach,	scc_quicc_attach),
83 	DEVMETHOD(device_detach,	scc_bfe_detach),
84 
85 	DEVMETHOD(bus_alloc_resource,	scc_bus_alloc_resource),
86 	DEVMETHOD(bus_release_resource,	scc_bus_release_resource),
87 	DEVMETHOD(bus_get_resource,	scc_bus_get_resource),
88 	DEVMETHOD(bus_read_ivar,	scc_bus_read_ivar),
89 	DEVMETHOD(bus_setup_intr,	scc_bus_setup_intr),
90 	DEVMETHOD(bus_teardown_intr,	scc_bus_teardown_intr),
91 
92 	DEVMETHOD_END
93 };
94 
95 static driver_t scc_quicc_driver = {
96 	scc_driver_name,
97 	scc_quicc_methods,
98 	sizeof(struct scc_softc),
99 };
100 
101 DRIVER_MODULE(scc, quicc, scc_quicc_driver, scc_devclass, 0, 0);
102