sys/arm64/coresight/coresight_funnel_acpi.c

   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_funnel.h>
  52
  53 static int
  54 funnel_acpi_probe(device_t dev)
  55 {
  56         struct funnel_softc *sc;
  57         static char *static_funnel_ids[] = { "ARMHC9FE", NULL };
  58         static char *funnel_ids[] = { "ARMHC9FF", NULL };
  59         int error;
  60
  61         sc = device_get_softc(dev);
  62
  63         error = ACPI_ID_PROBE(device_get_parent(dev), dev,
  64             static_funnel_ids, NULL);
  65         if (error <= 0) {
  66                 sc->hwtype = HWTYPE_STATIC_FUNNEL;
  67                 device_set_desc(dev, "ARM Coresight Static Funnel");
  68                 return (error);
  69         }
  70
  71         error = ACPI_ID_PROBE(device_get_parent(dev), dev,
  72             funnel_ids, NULL);
  73         if (error <= 0) {
  74                 sc->hwtype = HWTYPE_FUNNEL;
  75                 device_set_desc(dev, "ARM Coresight Funnel");
  76                 return (error);
  77         }
  78
  79         return (ENXIO);
  80 }
  81
  82 static int
  83 funnel_acpi_attach(device_t dev)
  84 {
  85         struct funnel_softc *sc;
  86
  87         sc = device_get_softc(dev);
  88         sc->pdata = coresight_acpi_get_platform_data(dev);
  89
  90         return (funnel_attach(dev));
  91 }
  92
  93 static device_method_t funnel_acpi_methods[] = {
  94         /* Device interface */
  95         DEVMETHOD(device_probe,                 funnel_acpi_probe),
  96         DEVMETHOD(device_attach,                funnel_acpi_attach),
  97
  98         /* End */
  99         DEVMETHOD_END
 100 };
 101
 102 DEFINE_CLASS_1(funnel, funnel_acpi_driver, funnel_acpi_methods,
 103     sizeof(struct funnel_softc), funnel_driver);
 104
 105 static devclass_t funnel_acpi_devclass;
 106
 107 EARLY_DRIVER_MODULE(funnel, acpi, funnel_acpi_driver, funnel_acpi_devclass,
 108     0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);