The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/puc/puc_sbus.c

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    1 /*-
    2  * Copyright (c) 2003 Marcel Moolenaar
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  *
    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  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD$");
   29 
   30 #include "opt_puc.h"
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/kernel.h>
   35 #include <sys/module.h>
   36 #include <sys/bus.h>
   37 #include <sys/conf.h>
   38 
   39 #include <dev/ofw/ofw_bus.h>
   40 
   41 #include <machine/bus.h>
   42 #include <sys/rman.h>
   43 #include <machine/resource.h>
   44 
   45 #define PUC_ENTRAILS    1
   46 #include <dev/puc/pucvar.h>
   47 
   48 static int
   49 puc_sbus_probe(device_t dev)
   50 {
   51         const char *nm;
   52 
   53         nm = ofw_bus_get_name(dev);
   54         if (!strcmp(nm, "zs")) {
   55                 device_set_desc(dev, "Zilog Z8530 dual channel SCC");
   56                 return (0);
   57         }
   58         return (ENXIO);
   59 }
   60 
   61 static int
   62 puc_sbus_attach(device_t dev)
   63 {
   64         struct puc_device_description dd;
   65         int i;
   66 
   67         bzero(&dd, sizeof(dd));
   68         dd.name = device_get_desc(dev);
   69         for (i = 0; i < 2; i++) {
   70                 dd.ports[i].type = PUC_PORT_TYPE_UART | PUC_PORT_UART_Z8530;
   71                 dd.ports[i].bar = 0;
   72                 dd.ports[i].offset = 4 - 4 * i;
   73                 dd.ports[i].serialfreq = 0;
   74                 dd.ports[i].flags = PUC_FLAGS_MEMORY;
   75                 dd.ports[i].regshft = 1;
   76         }
   77         return (puc_attach(dev, &dd));
   78 }
   79 
   80 static device_method_t puc_sbus_methods[] = {
   81         /* Device interface */
   82         DEVMETHOD(device_probe,             puc_sbus_probe),
   83         DEVMETHOD(device_attach,            puc_sbus_attach),
   84 
   85         DEVMETHOD(bus_alloc_resource,       puc_alloc_resource),
   86         DEVMETHOD(bus_release_resource,     puc_release_resource),
   87         DEVMETHOD(bus_get_resource,         puc_get_resource),
   88         DEVMETHOD(bus_read_ivar,            puc_read_ivar),
   89         DEVMETHOD(bus_setup_intr,           puc_setup_intr),
   90         DEVMETHOD(bus_teardown_intr,        puc_teardown_intr),
   91         DEVMETHOD(bus_print_child,          bus_generic_print_child),
   92         DEVMETHOD(bus_driver_added,         bus_generic_driver_added),
   93         { 0, 0 }
   94 };
   95 
   96 static driver_t puc_sbus_driver = {
   97         "puc",
   98         puc_sbus_methods,
   99         sizeof(struct puc_softc),
  100 };
  101 
  102 DRIVER_MODULE(puc, fhc, puc_sbus_driver, puc_devclass, 0, 0);
  103 DRIVER_MODULE(puc, sbus, puc_sbus_driver, puc_devclass, 0, 0);

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