1 /*-
2 * Copyright (c) 2018-2020 Ruslan Bukin <br@bsdpad.com>
3 * All rights reserved.
4 *
5 * This software was developed by BAE Systems, the University of Cambridge
6 * Computer Laboratory, and Memorial University under DARPA/AFRL contract
7 * FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
8 * (TC) research program.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/bus.h>
35 #include <sys/rman.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
38 #include <machine/bus.h>
39
40 #include <dev/ofw/ofw_bus.h>
41 #include <dev/ofw/ofw_bus_subr.h>
42
43 #include <arm64/coresight/coresight.h>
44 #include <arm64/coresight/coresight_funnel.h>
45
46 #include "coresight_if.h"
47
48 static struct ofw_compat_data compat_data[] = {
49 { "arm,coresight-funnel", HWTYPE_FUNNEL },
50 { "arm,coresight-static-funnel", HWTYPE_STATIC_FUNNEL },
51 { NULL, HWTYPE_NONE }
52 };
53
54 static int
funnel_fdt_probe(device_t dev)55 funnel_fdt_probe(device_t dev)
56 {
57 struct funnel_softc *sc;
58
59 if (!ofw_bus_status_okay(dev))
60 return (ENXIO);
61
62 sc = device_get_softc(dev);
63
64 sc->hwtype = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
65 switch (sc->hwtype) {
66 case HWTYPE_FUNNEL:
67 device_set_desc(dev, "Coresight Funnel");
68 break;
69 case HWTYPE_STATIC_FUNNEL:
70 device_set_desc(dev, "Coresight Static Funnel");
71 break;
72 default:
73 return (ENXIO);
74 };
75
76 return (BUS_PROBE_DEFAULT);
77 }
78
79 static int
funnel_fdt_attach(device_t dev)80 funnel_fdt_attach(device_t dev)
81 {
82 struct funnel_softc *sc;
83
84 sc = device_get_softc(dev);
85 sc->pdata = coresight_fdt_get_platform_data(dev);
86
87 return (funnel_attach(dev));
88 }
89
90 static device_method_t funnel_fdt_methods[] = {
91 /* Device interface */
92 DEVMETHOD(device_probe, funnel_fdt_probe),
93 DEVMETHOD(device_attach, funnel_fdt_attach),
94 DEVMETHOD_END
95 };
96
97 DEFINE_CLASS_1(funnel, funnel_fdt_driver, funnel_fdt_methods,
98 sizeof(struct funnel_softc), funnel_driver);
99
100 EARLY_DRIVER_MODULE(funnel, simplebus, funnel_fdt_driver, 0, 0,
101 BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);
102