2 * Copyright (c) 2018-2020 Ruslan Bukin <br@bsdpad.com>
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.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/module.h>
41 #include <machine/bus.h>
43 #include <dev/ofw/ofw_bus.h>
44 #include <dev/ofw/ofw_bus_subr.h>
46 #include <arm64/coresight/coresight.h>
47 #include <arm64/coresight/coresight_etm4x.h>
49 #include "coresight_if.h"
51 static struct ofw_compat_data compat_data[] = {
52 { "arm,coresight-etm4x", 1 },
57 etm_fdt_probe(device_t dev)
59 if (!ofw_bus_status_okay(dev))
62 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
65 device_set_desc(dev, "AArch64 Embedded Trace Macrocell");
67 return (BUS_PROBE_DEFAULT);
71 etm_fdt_attach(device_t dev)
75 sc = device_get_softc(dev);
76 sc->pdata = coresight_fdt_get_platform_data(dev);
78 return (etm_attach(dev));
81 static device_method_t etm_fdt_methods[] = {
82 /* Device interface */
83 DEVMETHOD(device_probe, etm_fdt_probe),
84 DEVMETHOD(device_attach, etm_fdt_attach),
88 DEFINE_CLASS_1(etm, etm_fdt_driver, etm_fdt_methods,
89 sizeof(struct etm_softc), etm_driver);
91 static devclass_t etm_fdt_devclass;
93 EARLY_DRIVER_MODULE(etm, simplebus, etm_fdt_driver, etm_fdt_devclass,
94 0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);