1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2020 Ruslan Bukin <br@bsdpad.com>
5 *
6 * This software was developed by SRI International and the University of
7 * Cambridge Computer Laboratory (Department of Computer Science and
8 * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
9 * DARPA SSITH research programme.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include "opt_acpi.h"
34
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD$");
37
38#include <sys/types.h>
39#include <sys/systm.h>
40#include <sys/bus.h>
41#include <sys/kernel.h>
42#include <sys/malloc.h>
43#include <sys/memdesc.h>
44#include <sys/module.h>
45#include <sys/rman.h>
46
47#include <contrib/dev/acpica/include/acpi.h>
48#include <dev/acpica/acpivar.h>
49
50#include <arm64/coresight/coresight.h>
51#include <arm64/coresight/coresight_etm4x.h>
52
53static int
54etm_acpi_probe(device_t dev)
55{
56	static char *etm_ids[] = { "ARMHC500", NULL };
57	int error;
58
59	error = ACPI_ID_PROBE(device_get_parent(dev), dev, etm_ids, NULL);
60	if (error <= 0)
61		device_set_desc(dev, "ARM Embedded Trace Macrocell");
62
63	return (error);
64}
65
66static int
67etm_acpi_attach(device_t dev)
68{
69	struct etm_softc *sc;
70
71	sc = device_get_softc(dev);
72	sc->pdata = coresight_acpi_get_platform_data(dev);
73
74	return (etm_attach(dev));
75}
76
77static device_method_t etm_acpi_methods[] = {
78	/* Device interface */
79	DEVMETHOD(device_probe,			etm_acpi_probe),
80	DEVMETHOD(device_attach,		etm_acpi_attach),
81
82	/* End */
83	DEVMETHOD_END
84};
85
86DEFINE_CLASS_1(etm, etm_acpi_driver, etm_acpi_methods,
87    sizeof(struct etm_softc), etm_driver);
88
89static devclass_t etm_acpi_devclass;
90
91EARLY_DRIVER_MODULE(etm, acpi, etm_acpi_driver, etm_acpi_devclass,
92    0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);
93