central.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
    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 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/8.4/sys/sparc64/central/central.c 230715 2012-01-29 01:27:39Z marius $");
   29 
   30 #include <sys/param.h>
   31 #include <sys/systm.h>
   32 #include <sys/bus.h>
   33 #include <sys/kernel.h>
   34 #include <sys/malloc.h>
   35 #include <sys/module.h>
   36 
   37 #include <dev/ofw/ofw_bus.h>
   38 #include <dev/ofw/ofw_bus_subr.h>
   39 #include <dev/ofw/openfirm.h>
   40 
   41 #include <machine/bus.h>
   42 #include <machine/resource.h>
   43 
   44 #include <sys/rman.h>
   45 
   46 #include <sparc64/sbus/ofw_sbus.h>
   47 
   48 struct central_devinfo {
   49         struct ofw_bus_devinfo  cdi_obdinfo;
   50         struct resource_list    cdi_rl;
   51 };
   52 
   53 struct central_softc {
   54         int                     sc_nrange;
   55         struct sbus_ranges      *sc_ranges;
   56 };
   57 
   58 static device_probe_t central_probe;
   59 static device_attach_t central_attach;
   60 static bus_print_child_t central_print_child;
   61 static bus_probe_nomatch_t central_probe_nomatch;
   62 static bus_alloc_resource_t central_alloc_resource;
   63 static bus_adjust_resource_t central_adjust_resource;
   64 static bus_get_resource_list_t central_get_resource_list;
   65 static ofw_bus_get_devinfo_t central_get_devinfo;
   66 
   67 static int central_print_res(struct central_devinfo *);
   68 
   69 static device_method_t central_methods[] = {
   70         /* Device interface */
   71         DEVMETHOD(device_probe,         central_probe),
   72         DEVMETHOD(device_attach,        central_attach),
   73         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   74         DEVMETHOD(device_suspend,       bus_generic_suspend),
   75         DEVMETHOD(device_resume,        bus_generic_resume),
   76 
   77         /* Bus interface */
   78         DEVMETHOD(bus_print_child,      central_print_child),
   79         DEVMETHOD(bus_probe_nomatch,    central_probe_nomatch),
   80         DEVMETHOD(bus_alloc_resource,   central_alloc_resource),
   81         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
   82         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
   83         DEVMETHOD(bus_adjust_resource,  central_adjust_resource),
   84         DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
   85         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
   86         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
   87         DEVMETHOD(bus_get_resource,     bus_generic_rl_get_resource),
   88         DEVMETHOD(bus_get_resource_list, central_get_resource_list),
   89         DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
   90 
   91         /* ofw_bus interface */
   92         DEVMETHOD(ofw_bus_get_devinfo,  central_get_devinfo),
   93         DEVMETHOD(ofw_bus_get_compat,   ofw_bus_gen_get_compat),
   94         DEVMETHOD(ofw_bus_get_model,    ofw_bus_gen_get_model),
   95         DEVMETHOD(ofw_bus_get_name,     ofw_bus_gen_get_name),
   96         DEVMETHOD(ofw_bus_get_node,     ofw_bus_gen_get_node),
   97         DEVMETHOD(ofw_bus_get_type,     ofw_bus_gen_get_type),
   98 
   99         DEVMETHOD_END
  100 };
  101 
  102 static driver_t central_driver = {
  103         "central",
  104         central_methods,
  105         sizeof(struct central_softc),
  106 };
  107 
  108 static devclass_t central_devclass;
  109 
  110 EARLY_DRIVER_MODULE(central, nexus, central_driver, central_devclass, 0, 0,
  111     BUS_PASS_BUS);
  112 MODULE_DEPEND(fhc, nexus, 1, 1, 1);
  113 MODULE_VERSION(central, 1);
  114 
  115 static int
  116 central_probe(device_t dev)
  117 {
  118 
  119         if (strcmp(ofw_bus_get_name(dev), "central") == 0) {
  120                 device_set_desc(dev, "central");
  121                 return (0);
  122         }
  123         return (ENXIO);
  124 }
  125 
  126 static int
  127 central_attach(device_t dev)
  128 {
  129         struct central_devinfo *cdi;
  130         struct sbus_regs *reg;
  131         struct central_softc *sc;
  132         phandle_t child;
  133         phandle_t node;
  134         device_t cdev;
  135         int nreg;
  136         int i;
  137 
  138         sc = device_get_softc(dev);
  139         node = ofw_bus_get_node(dev);
  140 
  141         sc->sc_nrange = OF_getprop_alloc(node, "ranges",
  142             sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges);
  143         if (sc->sc_nrange == -1) {
  144                 device_printf(dev, "can't get ranges\n");
  145                 return (ENXIO);
  146         }
  147 
  148         for (child = OF_child(node); child != 0; child = OF_peer(child)) {
  149                 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO);
  150                 if (ofw_bus_gen_setup_devinfo(&cdi->cdi_obdinfo, child) != 0) {
  151                         free(cdi, M_DEVBUF);
  152                         continue;
  153                 }
  154                 nreg = OF_getprop_alloc(child, "reg", sizeof(*reg),
  155                     (void **)&reg);
  156                 if (nreg == -1) {
  157                         device_printf(dev, "<%s>: incomplete\n",
  158                             cdi->cdi_obdinfo.obd_name);
  159                         ofw_bus_gen_destroy_devinfo(&cdi->cdi_obdinfo);
  160                         free(cdi, M_DEVBUF);
  161                         continue;
  162                 }
  163                 resource_list_init(&cdi->cdi_rl);
  164                 for (i = 0; i < nreg; i++)
  165                         resource_list_add(&cdi->cdi_rl, SYS_RES_MEMORY, i,
  166                             reg[i].sbr_offset, reg[i].sbr_offset +
  167                             reg[i].sbr_size, reg[i].sbr_size);
  168                 free(reg, M_OFWPROP);
  169                 cdev = device_add_child(dev, NULL, -1);
  170                 if (cdev == NULL) {
  171                         device_printf(dev, "<%s>: device_add_child failed\n",
  172                             cdi->cdi_obdinfo.obd_name);
  173                         resource_list_free(&cdi->cdi_rl);
  174                         ofw_bus_gen_destroy_devinfo(&cdi->cdi_obdinfo);
  175                         free(cdi, M_DEVBUF);
  176                         continue;
  177                 }
  178                 device_set_ivars(cdev, cdi);
  179         }
  180 
  181         return (bus_generic_attach(dev));
  182 }
  183 
  184 static int
  185 central_adjust_resource(device_t bus __unused, device_t child __unused,
  186     int type __unused, struct resource *r __unused, u_long start __unused,
  187     u_long end __unused)
  188 {
  189 
  190         return (ENXIO);
  191 }
  192 
  193 static int
  194 central_print_child(device_t dev, device_t child)
  195 {
  196         int rv;
  197 
  198         rv = bus_print_child_header(dev, child);
  199         rv += central_print_res(device_get_ivars(child));
  200         rv += bus_print_child_footer(dev, child);
  201         return (rv);
  202 }
  203 
  204 static void
  205 central_probe_nomatch(device_t dev, device_t child)
  206 {
  207         const char *type;
  208 
  209         device_printf(dev, "<%s>", ofw_bus_get_name(child));
  210         central_print_res(device_get_ivars(child));
  211         type = ofw_bus_get_type(child);
  212         printf(" type %s (no driver attached)\n",
  213             type != NULL ? type : "unknown");
  214 }
  215 
  216 static struct resource *
  217 central_alloc_resource(device_t bus, device_t child, int type, int *rid,
  218     u_long start, u_long end, u_long count, u_int flags)
  219 {
  220         struct resource_list *rl;
  221         struct resource_list_entry *rle;
  222         struct central_softc *sc;
  223         struct resource *res;
  224         bus_addr_t coffset;
  225         bus_addr_t cend;
  226         bus_addr_t phys;
  227         int isdefault;
  228         int passthrough;
  229         int i;
  230 
  231         isdefault = (start == 0UL && end == ~0UL);
  232         passthrough = (device_get_parent(child) != bus);
  233         res = NULL;
  234         rle = NULL;
  235         rl = BUS_GET_RESOURCE_LIST(bus, child);
  236         sc = device_get_softc(bus);
  237         switch (type) {
  238         case SYS_RES_IRQ:
  239                 return (resource_list_alloc(rl, bus, child, type, rid, start,
  240                     end, count, flags));
  241         case SYS_RES_MEMORY:
  242                 if (!passthrough) {
  243                         rle = resource_list_find(rl, type, *rid);
  244                         if (rle == NULL)
  245                                 return (NULL);
  246                         if (rle->res != NULL)
  247                                 panic("%s: resource entry is busy", __func__);
  248                         if (isdefault) {
  249                                 start = rle->start;
  250                                 count = ulmax(count, rle->count);
  251                                 end = ulmax(rle->end, start + count - 1);
  252                         }
  253                 }
  254                 for (i = 0; i < sc->sc_nrange; i++) {
  255                         coffset = sc->sc_ranges[i].coffset;
  256                         cend = coffset + sc->sc_ranges[i].size - 1;
  257                         if (start >= coffset && end <= cend) {
  258                                 start -= coffset;
  259                                 end -= coffset;
  260                                 phys = sc->sc_ranges[i].poffset |
  261                                     ((bus_addr_t)sc->sc_ranges[i].pspace << 32);
  262                                 res = bus_generic_alloc_resource(bus, child,
  263                                     type, rid, phys + start, phys + end,
  264                                     count, flags);
  265                                 if (!passthrough)
  266                                         rle->res = res;
  267                                 break;
  268                         }
  269                 }
  270                 break;
  271         }
  272         return (res);
  273 }
  274 
  275 static struct resource_list *
  276 central_get_resource_list(device_t bus, device_t child)
  277 {
  278         struct central_devinfo *cdi;
  279 
  280         cdi = device_get_ivars(child);
  281         return (&cdi->cdi_rl);
  282 }
  283 
  284 static const struct ofw_bus_devinfo *
  285 central_get_devinfo(device_t bus, device_t child)
  286 {
  287         struct central_devinfo *cdi;
  288 
  289         cdi = device_get_ivars(child);
  290         return (&cdi->cdi_obdinfo);
  291 }
  292 
  293 static int
  294 central_print_res(struct central_devinfo *cdi)
  295 {
  296 
  297         return (resource_list_print_type(&cdi->cdi_rl, "mem", SYS_RES_MEMORY,
  298             "%#lx"));
  299 }
Cache object: 424f31e74bef84f09a9880dd9610e1bb
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.
FreeBSD/Linux Kernel Cross Reference sys/sparc64/central/central.c

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