c9ea007c3b
o Parse the ACPI DSD (Device Specific Data) graph property and record device connections. o Split-out FDT support to a separate file. o Get the corresponding (FDT/ACPI) Coresight platform data in the device drivers. Sponsored by: DARPA, AFRL
93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Ruslan Bukin <br@bsdpad.com>
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory (Department of Computer Science and
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* Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
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* DARPA SSITH research programme.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "opt_acpi.h"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/memdesc.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <dev/acpica/acpivar.h>
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#include <arm64/coresight/coresight.h>
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#include <arm64/coresight/coresight_etm4x.h>
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static int
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etm_acpi_probe(device_t dev)
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{
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static char *etm_ids[] = { "ARMHC500", NULL };
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int error;
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error = ACPI_ID_PROBE(device_get_parent(dev), dev, etm_ids, NULL);
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if (error <= 0)
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device_set_desc(dev, "ARM Embedded Trace Macrocell");
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return (error);
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}
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static int
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etm_acpi_attach(device_t dev)
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{
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struct etm_softc *sc;
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sc = device_get_softc(dev);
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sc->pdata = coresight_acpi_get_platform_data(dev);
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return (etm_attach(dev));
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}
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static device_method_t etm_acpi_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, etm_acpi_probe),
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DEVMETHOD(device_attach, etm_acpi_attach),
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/* End */
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DEVMETHOD_END
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};
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DEFINE_CLASS_1(etm, etm_acpi_driver, etm_acpi_methods,
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sizeof(struct etm_softc), etm_driver);
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static devclass_t etm_acpi_devclass;
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EARLY_DRIVER_MODULE(etm, acpi, etm_acpi_driver, etm_acpi_devclass,
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0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);
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