if_snc.c

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    1 /*
    2  * Copyright (c) 1995, David Greenman
    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 unmodified, this list of conditions, and the following
   10  *    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 AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * $FreeBSD: releng/5.0/sys/dev/snc/if_snc.c 68054 2000-10-31 08:22:26Z phk $
   28  */
   29 
   30 /*
   31  *      National Semiconductor  DP8393X SONIC Driver
   32  *
   33  *      This is the bus independent attachment on FreeBSD 4.x
   34  *              written by Motomichi Matsuzaki <mzaki@e-mail.ne.jp>
   35  */
   36 
   37 #include <sys/param.h>
   38 #include <sys/socket.h>
   39 
   40 #include <sys/bus.h>
   41 #include <machine/bus.h>
   42 #include <sys/rman.h>
   43 #include <machine/resource.h>
   44 
   45 #include <net/ethernet.h>
   46 #include <net/if.h>
   47 #include <net/if_arp.h>
   48 #include <net/if_media.h>
   49 
   50 #include "opt_bdg.h"
   51 #ifdef BRIDGE
   52 #include <net/bridge.h>
   53 #endif
   54 
   55 #include <dev/snc/dp83932reg.h>
   56 #include <dev/snc/dp83932var.h>
   57 #include <dev/snc/dp83932subr.h>
   58 #include <dev/snc/if_sncreg.h>
   59 #include <dev/snc/if_sncvar.h>
   60 
   61 /* devclass for "snc" */
   62 devclass_t snc_devclass;
   63 
   64 /****************************************************************
   65   Resource management functions
   66  ****************************************************************/
   67 
   68 /*
   69  * Allocate a port resource with the given resource id.
   70  */
   71 int
   72 snc_alloc_port(dev, rid)
   73         device_t dev;
   74         int rid;
   75 {
   76         struct snc_softc *sc = device_get_softc(dev);
   77         struct resource *res;
   78 
   79         res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
   80                                  0ul, ~0ul, SNEC_NREGS, RF_ACTIVE);
   81         if (res) {
   82                 sc->ioport = res;
   83                 sc->ioport_rid = rid;
   84                 sc->sc_iot = rman_get_bustag(res);
   85                 sc->sc_ioh = rman_get_bushandle(res);
   86                 return (0);
   87         } else {
   88                 device_printf(dev, "can't assign port\n");
   89                 return (ENOENT);
   90         }
   91 }
   92 
   93 /*
   94  * Allocate a memory resource with the given resource id.
   95  */
   96 int
   97 snc_alloc_memory(dev, rid)
   98         device_t dev;
   99         int rid;
  100 {
  101         struct snc_softc *sc = device_get_softc(dev);
  102         struct resource *res;
  103 
  104         res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
  105                                  0ul, ~0ul, SNEC_NMEMS, RF_ACTIVE);
  106         if (res) {
  107                 sc->iomem = res;
  108                 sc->iomem_rid = rid;
  109                 sc->sc_memt = rman_get_bustag(res);
  110                 sc->sc_memh = rman_get_bushandle(res);
  111                 return (0);
  112         } else {
  113                 device_printf(dev, "can't assign memory\n");
  114                 return (ENOENT);
  115         }
  116 }
  117 
  118 /*
  119  * Allocate an irq resource with the given resource id.
  120  */
  121 int
  122 snc_alloc_irq(dev, rid, flags)
  123         device_t dev;
  124         int rid;
  125         int flags;
  126 {
  127         struct snc_softc *sc = device_get_softc(dev);
  128         struct resource *res;
  129 
  130         res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
  131                                  0ul, ~0ul, 1, (RF_ACTIVE | flags));
  132         if (res) {
  133                 sc->irq = res;
  134                 sc->irq_rid = rid;
  135                 return (0);
  136         } else {
  137                 device_printf(dev, "can't assign irq\n");
  138                 return (ENOENT);
  139         }
  140 }
  141 
  142 /*
  143  * Release all resources
  144  */
  145 void
  146 snc_release_resources(dev)
  147         device_t dev;
  148 {
  149         struct snc_softc *sc = device_get_softc(dev);
  150 
  151         if (sc->ioport) {
  152                 bus_release_resource(dev, SYS_RES_IOPORT,
  153                                      sc->ioport_rid, sc->ioport);
  154                 sc->ioport = 0;
  155         }
  156         if (sc->iomem) {
  157                 bus_release_resource(dev, SYS_RES_MEMORY,
  158                                      sc->iomem_rid, sc->iomem);
  159                 sc->iomem = 0;
  160         }
  161         if (sc->irq) {
  162                 bus_release_resource(dev, SYS_RES_IRQ,
  163                                      sc->irq_rid, sc->irq);
  164                 sc->irq = 0;
  165         }
  166 }
  167 
  168 /****************************************************************
  169   Probe routine
  170  ****************************************************************/
  171 
  172 int
  173 snc_probe(dev, type)
  174      device_t dev;
  175      int type;
  176 {
  177         struct snc_softc *sc = device_get_softc(dev);
  178 
  179         return snc_nec16_detectsubr(sc->sc_iot, sc->sc_ioh,
  180                                     sc->sc_memt, sc->sc_memh,
  181                                     rman_get_start(sc->irq),
  182                                     rman_get_start(sc->iomem),
  183                                     type);
  184 }
  185 
  186 /****************************************************************
  187   Attach routine
  188  ****************************************************************/
  189 
  190 int
  191 snc_attach(dev)
  192         device_t dev;
  193 {
  194         struct snc_softc *sc = device_get_softc(dev);
  195         u_int8_t myea[ETHER_ADDR_LEN];
  196 
  197         if (snc_nec16_register_irq(sc, rman_get_start(sc->irq)) == 0 || 
  198             snc_nec16_register_mem(sc, rman_get_start(sc->iomem)) == 0) {
  199                 snc_release_resources(dev);
  200                 return(ENOENT);
  201         }
  202 
  203         snc_nec16_get_enaddr(sc->sc_iot, sc->sc_ioh, myea);
  204         device_printf(dev, "%s Ethernet\n", snc_nec16_detect_type(myea));
  205 
  206         sc->sc_dev = dev;
  207 
  208         sc->sncr_dcr = DCR_SYNC | DCR_WAIT0 |
  209             DCR_DMABLOCK | DCR_RFT16 | DCR_TFT28;
  210         sc->sncr_dcr2 = 0;      /* XXX */
  211         sc->bitmode = 0;        /* 16 bit card */
  212 
  213         sc->sc_nic_put = snc_nec16_nic_put;
  214         sc->sc_nic_get = snc_nec16_nic_get;
  215         sc->sc_writetodesc = snc_nec16_writetodesc;
  216         sc->sc_readfromdesc = snc_nec16_readfromdesc;
  217         sc->sc_copytobuf = snc_nec16_copytobuf;
  218         sc->sc_copyfrombuf = snc_nec16_copyfrombuf;
  219         sc->sc_zerobuf = snc_nec16_zerobuf;
  220 
  221         /* sncsetup returns 1 if something fails */
  222         if (sncsetup(sc, myea)) {
  223                 snc_release_resources(dev);
  224                 return(ENOENT);
  225         }
  226 
  227         sncconfig(sc, NULL, 0, 0, myea);
  228 
  229         return 0;
  230 }
  231 
  232 /****************************************************************
  233   Shutdown routine
  234  ****************************************************************/
  235 
  236 void
  237 snc_shutdown(dev)
  238         device_t dev;
  239 {
  240         sncshutdown(device_get_softc(dev));
  241 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/snc/if_snc.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/snc/if_snc.c