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  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD$");
   31 
   32 /*
   33  *      National Semiconductor  DP8393X SONIC Driver
   34  *
   35  *      This is the bus independent attachment on FreeBSD 4.x
   36  *              written by Motomichi Matsuzaki <mzaki@e-mail.ne.jp>
   37  */
   38 
   39 #include <sys/param.h>
   40 #include <sys/socket.h>
   41 
   42 #include <sys/bus.h>
   43 #include <machine/bus.h>
   44 #include <sys/rman.h>
   45 #include <machine/resource.h>
   46 
   47 #include <net/ethernet.h>
   48 #include <net/if.h>
   49 #include <net/if_arp.h>
   50 #include <net/if_media.h>
   51 #include <net/if_var.h>
   52 
   53 #include <dev/snc/dp83932reg.h>
   54 #include <dev/snc/dp83932var.h>
   55 #include <dev/snc/dp83932subr.h>
   56 #include <dev/snc/if_sncreg.h>
   57 #include <dev/snc/if_sncvar.h>
   58 
   59 /* devclass for "snc" */
   60 devclass_t snc_devclass;
   61 
   62 /****************************************************************
   63   Resource management functions
   64  ****************************************************************/
   65 
   66 /*
   67  * Allocate a port resource with the given resource id.
   68  */
   69 int
   70 snc_alloc_port(device_t dev, int rid)
   71 {
   72         struct snc_softc *sc = device_get_softc(dev);
   73         struct resource *res;
   74 
   75         res = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, &rid,
   76                                           SNEC_NREGS, RF_ACTIVE);
   77         if (res) {
   78                 sc->ioport = res;
   79                 sc->ioport_rid = rid;
   80                 sc->sc_iot = rman_get_bustag(res);
   81                 sc->sc_ioh = rman_get_bushandle(res);
   82                 return (0);
   83         } else {
   84                 device_printf(dev, "can't assign port\n");
   85                 return (ENOENT);
   86         }
   87 }
   88 
   89 /*
   90  * Allocate a memory resource with the given resource id.
   91  */
   92 int
   93 snc_alloc_memory(device_t dev, int rid)
   94 {
   95         struct snc_softc *sc = device_get_softc(dev);
   96         struct resource *res;
   97 
   98         res = bus_alloc_resource_anywhere(dev, SYS_RES_MEMORY, &rid,
   99                                           SNEC_NMEMS, RF_ACTIVE);
  100         if (res) {
  101                 sc->iomem = res;
  102                 sc->iomem_rid = rid;
  103                 sc->sc_memt = rman_get_bustag(res);
  104                 sc->sc_memh = rman_get_bushandle(res);
  105                 return (0);
  106         } else {
  107                 device_printf(dev, "can't assign memory\n");
  108                 return (ENOENT);
  109         }
  110 }
  111 
  112 /*
  113  * Allocate an irq resource with the given resource id.
  114  */
  115 int
  116 snc_alloc_irq(device_t dev, int rid, int flags)
  117 {
  118         struct snc_softc *sc = device_get_softc(dev);
  119         struct resource *res;
  120 
  121         res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | flags);
  122         if (res) {
  123                 sc->irq = res;
  124                 sc->irq_rid = rid;
  125                 return (0);
  126         } else {
  127                 device_printf(dev, "can't assign irq\n");
  128                 return (ENOENT);
  129         }
  130 }
  131 
  132 /*
  133  * Release all resources
  134  */
  135 void
  136 snc_release_resources(device_t dev)
  137 {
  138         struct snc_softc *sc = device_get_softc(dev);
  139 
  140         if (sc->ioport) {
  141                 bus_release_resource(dev, SYS_RES_IOPORT,
  142                                      sc->ioport_rid, sc->ioport);
  143                 sc->ioport = 0;
  144         }
  145         if (sc->iomem) {
  146                 bus_release_resource(dev, SYS_RES_MEMORY,
  147                                      sc->iomem_rid, sc->iomem);
  148                 sc->iomem = 0;
  149         }
  150         if (sc->irq) {
  151                 bus_release_resource(dev, SYS_RES_IRQ,
  152                                      sc->irq_rid, sc->irq);
  153                 sc->irq = 0;
  154         }
  155         if (sc->sc_ifp) {
  156                 if_free(sc->sc_ifp);
  157                 sc->sc_ifp = 0;
  158         }
  159 }
  160 
  161 /****************************************************************
  162   Probe routine
  163  ****************************************************************/
  164 
  165 int
  166 snc_probe(device_t dev, int type)
  167 {
  168         struct snc_softc *sc = device_get_softc(dev);
  169 
  170         return snc_nec16_detectsubr(sc->sc_iot, sc->sc_ioh,
  171                                     sc->sc_memt, sc->sc_memh,
  172                                     rman_get_start(sc->irq),
  173                                     rman_get_start(sc->iomem),
  174                                     type);
  175 }
  176 
  177 /****************************************************************
  178   Attach routine
  179  ****************************************************************/
  180 
  181 int
  182 snc_attach(device_t dev)
  183 {
  184         struct snc_softc *sc = device_get_softc(dev);
  185         u_int8_t myea[ETHER_ADDR_LEN];
  186         int error;
  187 
  188         if (snc_nec16_register_irq(sc, rman_get_start(sc->irq)) == 0 || 
  189             snc_nec16_register_mem(sc, rman_get_start(sc->iomem)) == 0) {
  190                 snc_release_resources(dev);
  191                 return(ENOENT);
  192         }
  193 
  194         snc_nec16_get_enaddr(sc->sc_iot, sc->sc_ioh, myea);
  195         device_printf(dev, "%s Ethernet\n", snc_nec16_detect_type(myea));
  196 
  197         sc->sc_dev = dev;
  198 
  199         sc->sncr_dcr = DCR_SYNC | DCR_WAIT0 |
  200             DCR_DMABLOCK | DCR_RFT16 | DCR_TFT28;
  201         sc->sncr_dcr2 = 0;      /* XXX */
  202         sc->bitmode = 0;        /* 16 bit card */
  203 
  204         sc->sc_nic_put = snc_nec16_nic_put;
  205         sc->sc_nic_get = snc_nec16_nic_get;
  206         sc->sc_writetodesc = snc_nec16_writetodesc;
  207         sc->sc_readfromdesc = snc_nec16_readfromdesc;
  208         sc->sc_copytobuf = snc_nec16_copytobuf;
  209         sc->sc_copyfrombuf = snc_nec16_copyfrombuf;
  210         sc->sc_zerobuf = snc_nec16_zerobuf;
  211 
  212         /* sncsetup returns 1 if something fails */
  213         if (sncsetup(sc, myea)) {
  214                 snc_release_resources(dev);
  215                 return(ENOENT);
  216         }
  217 
  218         mtx_init(&sc->sc_lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
  219             MTX_DEF);
  220         callout_init_mtx(&sc->sc_timer, &sc->sc_lock, 0);
  221         error = sncconfig(sc, NULL, 0, 0, myea);
  222         if (error) {
  223                 snc_release_resources(dev);
  224                 mtx_destroy(&sc->sc_lock);
  225                 return (error);
  226         }
  227 
  228         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
  229                                NULL, sncintr, sc, &sc->irq_handle);
  230         if (error) {
  231                 printf("snc_isa_attach: bus_setup_intr() failed\n");
  232                 ether_ifdetach(sc->sc_ifp);             
  233                 snc_release_resources(dev);
  234                 mtx_destroy(&sc->sc_lock);
  235                 return (error);
  236         }
  237 
  238         return 0;
  239 }
  240 
  241 /****************************************************************
  242   Shutdown routine
  243  ****************************************************************/
  244 
  245 int
  246 snc_shutdown(device_t dev)
  247 {
  248         struct snc_softc *sc = device_get_softc(dev);
  249 
  250         SNC_LOCK(sc);
  251         sncshutdown(sc);
  252         SNC_UNLOCK(sc);
  253 
  254         return (0);
  255 }

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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