sys/powerpc/psim/openpic_iobus.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-3-Clause
   3  *
   4  * Copyright 2003 by Peter Grehan. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  22  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  24  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  25  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  */
  30
  31 /*
  32  * The psim iobus attachment for the OpenPIC interrupt controller.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/module.h>
  39 #include <sys/bus.h>
  40 #include <sys/conf.h>
  41 #include <sys/kernel.h>
  42
  43 #include <dev/ofw/openfirm.h>
  44
  45 #include <machine/bus.h>
  46 #include <machine/intr_machdep.h>
  47 #include <machine/md_var.h>
  48 #include <machine/pio.h>
  49 #include <machine/resource.h>
  50
  51 #include <vm/vm.h>
  52 #include <vm/pmap.h>
  53
  54 #include <sys/rman.h>
  55
  56 #include <machine/openpicreg.h>
  57 #include <machine/openpicvar.h>
  58 #include <powerpc/psim/iobusvar.h>
  59
  60 #include "pic_if.h"
  61
  62 /*
  63  * PSIM IOBus interface
  64  */
  65 static int      openpic_iobus_probe(device_t);
  66 static int      openpic_iobus_attach(device_t);
  67
  68 static device_method_t  openpic_iobus_methods[] = {
  69         /* Device interface */
  70         DEVMETHOD(device_probe,         openpic_iobus_probe),
  71         DEVMETHOD(device_attach,        openpic_iobus_attach),
  72
  73         /* PIC interface */
  74         DEVMETHOD(pic_config,           openpic_config),
  75         DEVMETHOD(pic_dispatch,         openpic_dispatch),
  76         DEVMETHOD(pic_enable,           openpic_enable),
  77         DEVMETHOD(pic_eoi,              openpic_eoi),
  78         DEVMETHOD(pic_ipi,              openpic_ipi),
  79         DEVMETHOD(pic_mask,             openpic_mask),
  80         DEVMETHOD(pic_unmask,           openpic_unmask),
  81         { 0, 0 }
  82 };
  83
  84 static driver_t openpic_iobus_driver = {
  85         "openpic",
  86         openpic_iobus_methods,
  87         sizeof(struct openpic_softc)
  88 };
  89
  90 DRIVER_MODULE(openpic, iobus, openpic_iobus_driver, 0, 0);
  91
  92 static int
  93 openpic_iobus_probe(device_t dev)
  94 {
  95         struct openpic_softc *sc;
  96         char *name;
  97
  98         name = iobus_get_name(dev);
  99         if (strcmp(name, "interrupt-controller") != 0)
 100                 return (ENXIO);
 101
 102         /*
 103          * The description was already printed out in the nexus
 104          * probe, so don't do it again here
 105          */
 106         device_set_desc(dev, OPENPIC_DEVSTR);
 107
 108         sc = device_get_softc(dev);
 109         sc->sc_psim = 1;
 110
 111         return (0);
 112 }
 113
 114 static int
 115 openpic_iobus_attach(device_t dev)
 116 {
 117
 118         return (openpic_common_attach(dev, 0));
 119 }