1 /*-
2 * Copyright (c) 2012 Semihalf.
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 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/param.h>
28 #include <sys/systm.h>
29 #include <sys/kernel.h>
30 #include <sys/bus.h>
31 #include <sys/module.h>
32
33 #include <dev/fdt/simplebus.h>
34 #include <dev/ofw/ofw_bus.h>
35 #include <dev/ofw/ofw_bus_subr.h>
36
37 #include <contrib/ncsw/inc/ncsw_ext.h>
38 #include <contrib/ncsw/inc/enet_ext.h>
39
40 #include "fman.h"
41
42 #define FFMAN_DEVSTR "Freescale Frame Manager"
43
44 static int fman_fdt_probe(device_t dev);
45
46 static device_method_t fman_methods[] = {
47 /* Device interface */
48 DEVMETHOD(device_probe, fman_fdt_probe),
49 DEVMETHOD(device_attach, fman_attach),
50 DEVMETHOD(device_detach, fman_detach),
51
52 DEVMETHOD(device_shutdown, fman_shutdown),
53 DEVMETHOD(device_suspend, fman_suspend),
54 DEVMETHOD(device_resume, fman_resume_dev),
55
56 DEVMETHOD(bus_alloc_resource, fman_alloc_resource),
57 DEVMETHOD(bus_activate_resource, fman_activate_resource),
58 DEVMETHOD(bus_release_resource, fman_release_resource),
59 { 0, 0 }
60 };
61
62 DEFINE_CLASS_1(fman, fman_driver, fman_methods,
63 sizeof(struct fman_softc), simplebus_driver);
64 EARLY_DRIVER_MODULE(fman, simplebus, fman_driver, 0, 0,
65 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
66
67
68 static int
fman_fdt_probe(device_t dev)69 fman_fdt_probe(device_t dev)
70 {
71
72 if (!ofw_bus_status_okay(dev))
73 return (ENXIO);
74
75 if (!ofw_bus_is_compatible(dev, "fsl,fman"))
76 return (ENXIO);
77
78 device_set_desc(dev, FFMAN_DEVSTR);
79
80 return (BUS_PROBE_DEFAULT);
81 }
82
83 uint32_t
fman_get_clock(struct fman_softc * sc)84 fman_get_clock(struct fman_softc *sc)
85 {
86 device_t dev;
87 phandle_t node;
88 pcell_t fman_clock;
89
90 dev = sc->sc_base.dev;
91 node = ofw_bus_get_node(dev);
92
93 if ((OF_getprop(node, "clock-frequency", &fman_clock,
94 sizeof(fman_clock)) <= 0) || (fman_clock == 0)) {
95 device_printf(dev, "could not acquire correct frequency "
96 "from DTS\n");
97
98 return (0);
99 }
100
101 return ((uint32_t)fman_clock);
102 }
103
104