xref: /freebsd/sys/dev/quicc/quicc_bfe_fdt.c (revision 3b2324c3a800d7599f348c408f01908d0cef05a0)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 2006 Juniper Networks.
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  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. The name of the author may not be used to endorse or promote products
16  *    derived from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  */
30 
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33 
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/bus.h>
37 #include <sys/conf.h>
38 #include <sys/kernel.h>
39 #include <sys/lock.h>
40 #include <sys/malloc.h>
41 #include <sys/module.h>
42 #include <sys/rman.h>
43 #include <sys/tty.h>
44 #include <machine/bus.h>
45 
46 #include <dev/ofw/ofw_bus.h>
47 #include <dev/ofw/ofw_bus_subr.h>
48 #include <dev/quicc/quicc_bfe.h>
49 
50 static int quicc_fdt_probe(device_t dev);
51 
52 static device_method_t quicc_fdt_methods[] = {
53 	/* Device interface */
54 	DEVMETHOD(device_probe,		quicc_fdt_probe),
55 	DEVMETHOD(device_attach,	quicc_bfe_attach),
56 	DEVMETHOD(device_detach,	quicc_bfe_detach),
57 
58 	DEVMETHOD(bus_alloc_resource,	quicc_bus_alloc_resource),
59 	DEVMETHOD(bus_release_resource,	quicc_bus_release_resource),
60 	DEVMETHOD(bus_get_resource,	quicc_bus_get_resource),
61 	DEVMETHOD(bus_read_ivar,	quicc_bus_read_ivar),
62 	DEVMETHOD(bus_setup_intr,	quicc_bus_setup_intr),
63 	DEVMETHOD(bus_teardown_intr,	quicc_bus_teardown_intr),
64 
65 	DEVMETHOD_END
66 };
67 
68 static driver_t quicc_fdt_driver = {
69 	quicc_driver_name,
70 	quicc_fdt_methods,
71 	sizeof(struct quicc_softc),
72 };
73 
74 static int
75 quicc_fdt_probe(device_t dev)
76 {
77 	phandle_t par;
78 	pcell_t clock;
79 
80 	if (!ofw_bus_status_okay(dev))
81 		return (ENXIO);
82 
83 	if (!ofw_bus_is_compatible(dev, "fsl,cpm2"))
84 		return (ENXIO);
85 
86 	par = OF_parent(ofw_bus_get_node(dev));
87 	if (OF_getprop(par, "bus-frequency", &clock, sizeof(clock)) <= 0)
88 		clock = 0;
89 
90 	return (quicc_bfe_probe(dev, (uintptr_t)clock));
91 }
92 
93 DRIVER_MODULE(quicc, simplebus, quicc_fdt_driver, quicc_devclass, 0, 0);
94