xref: /freebsd/sys/dev/quicc/quicc_bfe_fdt.c (revision 51e235148a4becba94e824a44bd69687644a7f56)
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 #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/lock.h>
38 #include <sys/malloc.h>
39 #include <sys/module.h>
40 #include <sys/rman.h>
41 #include <machine/bus.h>
42 
43 #include <dev/ofw/ofw_bus.h>
44 #include <dev/ofw/ofw_bus_subr.h>
45 #include <dev/quicc/quicc_bfe.h>
46 
47 static int quicc_fdt_probe(device_t dev);
48 
49 static device_method_t quicc_fdt_methods[] = {
50 	/* Device interface */
51 	DEVMETHOD(device_probe,		quicc_fdt_probe),
52 	DEVMETHOD(device_attach,	quicc_bfe_attach),
53 	DEVMETHOD(device_detach,	quicc_bfe_detach),
54 
55 	DEVMETHOD(bus_alloc_resource,	quicc_bus_alloc_resource),
56 	DEVMETHOD(bus_release_resource,	quicc_bus_release_resource),
57 	DEVMETHOD(bus_get_resource,	quicc_bus_get_resource),
58 	DEVMETHOD(bus_read_ivar,	quicc_bus_read_ivar),
59 	DEVMETHOD(bus_setup_intr,	quicc_bus_setup_intr),
60 	DEVMETHOD(bus_teardown_intr,	quicc_bus_teardown_intr),
61 
62 	DEVMETHOD_END
63 };
64 
65 static driver_t quicc_fdt_driver = {
66 	quicc_driver_name,
67 	quicc_fdt_methods,
68 	sizeof(struct quicc_softc),
69 };
70 
71 static int
72 quicc_fdt_probe(device_t dev)
73 {
74 	phandle_t par;
75 	pcell_t clock;
76 
77 	if (!ofw_bus_status_okay(dev))
78 		return (ENXIO);
79 
80 	if (!ofw_bus_is_compatible(dev, "fsl,cpm2"))
81 		return (ENXIO);
82 
83 	par = OF_parent(ofw_bus_get_node(dev));
84 	if (OF_getprop(par, "bus-frequency", &clock, sizeof(clock)) <= 0)
85 		clock = 0;
86 
87 	return (quicc_bfe_probe(dev, (uintptr_t)clock));
88 }
89 
90 DRIVER_MODULE(quicc, simplebus, quicc_fdt_driver, 0, 0);
91