central.c

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    1 /*-
    2  * Copyright (c) 2003 Jake Burkholder.
    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  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD$
   27  */
   28 
   29 #include <sys/param.h>
   30 #include <sys/systm.h>
   31 #include <sys/bus.h>
   32 #include <sys/kernel.h>
   33 #include <sys/malloc.h>
   34 #include <sys/module.h>
   35 
   36 #include <dev/ofw/ofw_bus.h>
   37 #include <dev/ofw/openfirm.h>
   38 
   39 #include <machine/bus.h>
   40 #include <machine/nexusvar.h>
   41 #include <machine/ofw_upa.h>
   42 #include <machine/resource.h>
   43 
   44 #include <sys/rman.h>
   45 
   46 #include <sparc64/sbus/ofw_sbus.h>
   47 #include <sparc64/sbus/sbusreg.h>
   48 
   49 struct central_devinfo {
   50         char                    *cdi_compat;
   51         char                    *cdi_model;
   52         char                    *cdi_name;
   53         char                    *cdi_type;
   54         phandle_t               cdi_node;
   55 };
   56 
   57 struct central_softc {
   58         phandle_t               sc_node;
   59         int                     sc_nrange;
   60         struct sbus_ranges      *sc_ranges;
   61 };
   62 
   63 static int central_probe(device_t dev);
   64 static int central_attach(device_t dev);
   65 
   66 static void central_probe_nomatch(device_t dev, device_t child);
   67 static struct resource *central_alloc_resource(device_t, device_t, int, int *,
   68     u_long, u_long, u_long, u_int);
   69 static ofw_bus_get_compat_t central_get_compat;
   70 static ofw_bus_get_model_t central_get_model;
   71 static ofw_bus_get_name_t central_get_name;
   72 static ofw_bus_get_node_t central_get_node;
   73 static ofw_bus_get_type_t central_get_type;
   74 
   75 static device_method_t central_methods[] = {
   76         /* Device interface. */
   77         DEVMETHOD(device_probe,         central_probe),
   78         DEVMETHOD(device_attach,        central_attach),
   79 
   80         /* Bus interface. */
   81         DEVMETHOD(bus_print_child,      bus_generic_print_child),
   82         DEVMETHOD(bus_probe_nomatch,    central_probe_nomatch),
   83         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
   84         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
   85         DEVMETHOD(bus_alloc_resource,   central_alloc_resource),
   86         DEVMETHOD(bus_release_resource, bus_generic_release_resource),
   87         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
   88         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
   89 
   90         /* ofw_bus interface */
   91         DEVMETHOD(ofw_bus_get_compat,   central_get_compat),
   92         DEVMETHOD(ofw_bus_get_model,    central_get_model),
   93         DEVMETHOD(ofw_bus_get_name,     central_get_name),
   94         DEVMETHOD(ofw_bus_get_node,     central_get_node),
   95         DEVMETHOD(ofw_bus_get_type,     central_get_type),
   96 
   97         { NULL, NULL }
   98 };
   99 
  100 static driver_t central_driver = {
  101         "central",
  102         central_methods,
  103         sizeof(struct central_softc),
  104 };
  105 
  106 static devclass_t central_devclass;
  107 
  108 DRIVER_MODULE(central, nexus, central_driver, central_devclass, 0, 0);
  109 
  110 static int
  111 central_probe(device_t dev)
  112 {
  113 
  114         if (strcmp(nexus_get_name(dev), "central") == 0) {
  115                 device_set_desc(dev, "central");
  116                 return (0);
  117         }
  118         return (ENXIO);
  119 }
  120 
  121 static int
  122 central_attach(device_t dev)
  123 {
  124         struct central_devinfo *cdi;
  125         struct central_softc *sc;
  126         phandle_t child;
  127         phandle_t node;
  128         device_t cdev;
  129         char *name;
  130 
  131         sc = device_get_softc(dev);
  132         node = nexus_get_node(dev);
  133         sc->sc_node = node;
  134 
  135         sc->sc_nrange = OF_getprop_alloc(node, "ranges",
  136             sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges);
  137         if (sc->sc_nrange == -1) {
  138                 device_printf(dev, "can't get ranges");
  139                 return (ENXIO);
  140         }
  141 
  142         for (child = OF_child(node); child != 0; child = OF_peer(child)) {
  143                 if ((OF_getprop_alloc(child, "name", 1, (void **)&name)) == -1)
  144                         continue;
  145                 cdev = device_add_child(dev, NULL, -1);
  146                 if (cdev != NULL) {
  147                         cdi = malloc(sizeof(*cdi), M_DEVBUF,
  148                             M_WAITOK | M_ZERO);
  149                         cdi->cdi_name = name;
  150                         cdi->cdi_node = child;
  151                         OF_getprop_alloc(child, "compatible", 1,
  152                             (void **)&cdi->cdi_compat);
  153                         OF_getprop_alloc(child, "device_type", 1,
  154                             (void **)&cdi->cdi_type);
  155                         OF_getprop_alloc(child, "model", 1,
  156                             (void **)&cdi->cdi_model);
  157                         device_set_ivars(cdev, cdi);
  158                 } else
  159                         free(name, M_OFWPROP);
  160         }
  161 
  162         return (bus_generic_attach(dev));
  163 }
  164 
  165 static void
  166 central_probe_nomatch(device_t dev, device_t child)
  167 {
  168         struct central_devinfo *cdi;
  169 
  170         cdi = device_get_ivars(child);
  171         device_printf(dev, "<%s> type %s (no driver attached)\n",
  172             cdi->cdi_name, cdi->cdi_type != NULL ? cdi->cdi_type : "unknown");
  173 }
  174 
  175 static struct resource *
  176 central_alloc_resource(device_t bus, device_t child, int type, int *rid,
  177     u_long start, u_long end, u_long count, u_int flags)
  178 {
  179         struct central_softc *sc;
  180         struct resource *res;
  181         bus_addr_t coffset;
  182         bus_addr_t cend;
  183         bus_addr_t phys;
  184         int i;
  185 
  186         if (type != SYS_RES_MEMORY) {
  187                 return (bus_generic_alloc_resource(bus, child, type, rid,
  188                     start, end, count, flags));
  189         }
  190         res = NULL;
  191         sc = device_get_softc(bus);
  192         for (i = 0; i < sc->sc_nrange; i++) {
  193                 coffset = sc->sc_ranges[i].coffset;
  194                 cend = coffset + sc->sc_ranges[i].size - 1;
  195                 if (start >= coffset && end <= cend) {
  196                         start -= coffset;
  197                         end -= coffset;
  198                         phys = sc->sc_ranges[i].poffset |
  199                             ((bus_addr_t)sc->sc_ranges[i].pspace << 32);
  200                         res = bus_generic_alloc_resource(bus, child, type,
  201                             rid, phys + start, phys + end, count, flags);
  202                         break;
  203                 }
  204         }
  205         return (res);
  206 }
  207 
  208 static const char *
  209 central_get_compat(device_t bus, device_t dev)
  210 {
  211         struct central_devinfo *dinfo;
  212  
  213         dinfo = device_get_ivars(dev);
  214         return (dinfo->cdi_compat);
  215 }
  216  
  217 static const char *
  218 central_get_model(device_t bus, device_t dev)
  219 {
  220         struct central_devinfo *dinfo;
  221 
  222         dinfo = device_get_ivars(dev);
  223         return (dinfo->cdi_model);
  224 }
  225 
  226 static const char *
  227 central_get_name(device_t bus, device_t dev)
  228 {
  229         struct central_devinfo *dinfo;
  230 
  231         dinfo = device_get_ivars(dev);
  232         return (dinfo->cdi_name);
  233 }
  234 
  235 static phandle_t
  236 central_get_node(device_t bus, device_t dev)
  237 {
  238         struct central_devinfo *dinfo;
  239 
  240         dinfo = device_get_ivars(dev);
  241         return (dinfo->cdi_node);
  242 }
  243 
  244 static const char *
  245 central_get_type(device_t bus, device_t dev)
  246 {
  247         struct central_devinfo *dinfo;
  248 
  249         dinfo = device_get_ivars(dev);
  250         return (dinfo->cdi_type);
  251 }

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FreeBSD/Linux Kernel Cross Reference sys/sparc64/central/central.c

FreeBSD/Linux Kernel Cross Reference
sys/sparc64/central/central.c