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/cdefs.h>
33__FBSDID("$FreeBSD$");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/bus.h>
38#include <sys/rman.h>
39#include <sys/kernel.h>
40#include <sys/module.h>
41#include <machine/bus.h>
42
43#include <dev/ofw/ofw_bus.h>
44#include <dev/ofw/ofw_bus_subr.h>
45
46#include <arm64/coresight/coresight.h>
47#include <arm64/coresight/coresight_funnel.h>
48
49#include "coresight_if.h"
50
51static struct ofw_compat_data compat_data[] = {
52	{ "arm,coresight-funnel",		HWTYPE_FUNNEL },
53	{ "arm,coresight-static-funnel",	HWTYPE_STATIC_FUNNEL },
54	{ NULL,					HWTYPE_NONE }
55};
56
57static int
58funnel_fdt_probe(device_t dev)
59{
60	struct funnel_softc *sc;
61
62	if (!ofw_bus_status_okay(dev))
63		return (ENXIO);
64
65	sc = device_get_softc(dev);
66
67	sc->hwtype = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
68	switch (sc->hwtype) {
69	case HWTYPE_FUNNEL:
70		device_set_desc(dev, "Coresight Funnel");
71		break;
72	case HWTYPE_STATIC_FUNNEL:
73		device_set_desc(dev, "Coresight Static Funnel");
74		break;
75	default:
76		return (ENXIO);
77	};
78
79	return (BUS_PROBE_DEFAULT);
80}
81
82static int
83funnel_fdt_attach(device_t dev)
84{
85	struct funnel_softc *sc;
86
87	sc = device_get_softc(dev);
88	sc->pdata = coresight_fdt_get_platform_data(dev);
89
90	return (funnel_attach(dev));
91}
92
93static device_method_t funnel_fdt_methods[] = {
94	/* Device interface */
95	DEVMETHOD(device_probe,		funnel_fdt_probe),
96	DEVMETHOD(device_attach,	funnel_fdt_attach),
97	DEVMETHOD_END
98};
99
100DEFINE_CLASS_1(funnel, funnel_fdt_driver, funnel_fdt_methods,
101    sizeof(struct funnel_softc), funnel_driver);
102
103static devclass_t funnel_fdt_devclass;
104
105EARLY_DRIVER_MODULE(funnel, simplebus, funnel_fdt_driver, funnel_fdt_devclass,
106    0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);
107