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: releng/8.4/sys/dev/snc/if_snc.c 194023 2009-06-11 17:14:28Z avg $");
   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 
   52 #include <dev/snc/dp83932reg.h>
   53 #include <dev/snc/dp83932var.h>
   54 #include <dev/snc/dp83932subr.h>
   55 #include <dev/snc/if_sncreg.h>
   56 #include <dev/snc/if_sncvar.h>
   57 
   58 /* devclass for "snc" */
   59 devclass_t snc_devclass;
   60 
   61 /****************************************************************
   62   Resource management functions
   63  ****************************************************************/
   64 
   65 /*
   66  * Allocate a port resource with the given resource id.
   67  */
   68 int
   69 snc_alloc_port(dev, rid)
   70         device_t dev;
   71         int rid;
   72 {
   73         struct snc_softc *sc = device_get_softc(dev);
   74         struct resource *res;
   75 
   76         res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
   77                                  0ul, ~0ul, SNEC_NREGS, RF_ACTIVE);
   78         if (res) {
   79                 sc->ioport = res;
   80                 sc->ioport_rid = rid;
   81                 sc->sc_iot = rman_get_bustag(res);
   82                 sc->sc_ioh = rman_get_bushandle(res);
   83                 return (0);
   84         } else {
   85                 device_printf(dev, "can't assign port\n");
   86                 return (ENOENT);
   87         }
   88 }
   89 
   90 /*
   91  * Allocate a memory resource with the given resource id.
   92  */
   93 int
   94 snc_alloc_memory(dev, rid)
   95         device_t dev;
   96         int rid;
   97 {
   98         struct snc_softc *sc = device_get_softc(dev);
   99         struct resource *res;
  100 
  101         res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
  102                                  0ul, ~0ul, SNEC_NMEMS, RF_ACTIVE);
  103         if (res) {
  104                 sc->iomem = res;
  105                 sc->iomem_rid = rid;
  106                 sc->sc_memt = rman_get_bustag(res);
  107                 sc->sc_memh = rman_get_bushandle(res);
  108                 return (0);
  109         } else {
  110                 device_printf(dev, "can't assign memory\n");
  111                 return (ENOENT);
  112         }
  113 }
  114 
  115 /*
  116  * Allocate an irq resource with the given resource id.
  117  */
  118 int
  119 snc_alloc_irq(dev, rid, flags)
  120         device_t dev;
  121         int rid;
  122         int flags;
  123 {
  124         struct snc_softc *sc = device_get_softc(dev);
  125         struct resource *res;
  126 
  127         res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | flags);
  128         if (res) {
  129                 sc->irq = res;
  130                 sc->irq_rid = rid;
  131                 return (0);
  132         } else {
  133                 device_printf(dev, "can't assign irq\n");
  134                 return (ENOENT);
  135         }
  136 }
  137 
  138 /*
  139  * Release all resources
  140  */
  141 void
  142 snc_release_resources(dev)
  143         device_t dev;
  144 {
  145         struct snc_softc *sc = device_get_softc(dev);
  146 
  147         if (sc->ioport) {
  148                 bus_release_resource(dev, SYS_RES_IOPORT,
  149                                      sc->ioport_rid, sc->ioport);
  150                 sc->ioport = 0;
  151         }
  152         if (sc->iomem) {
  153                 bus_release_resource(dev, SYS_RES_MEMORY,
  154                                      sc->iomem_rid, sc->iomem);
  155                 sc->iomem = 0;
  156         }
  157         if (sc->irq) {
  158                 bus_release_resource(dev, SYS_RES_IRQ,
  159                                      sc->irq_rid, sc->irq);
  160                 sc->irq = 0;
  161         }
  162         if (sc->sc_ifp) {
  163                 if_free(sc->sc_ifp);
  164                 sc->sc_ifp = 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         int error;
  197 
  198         if (snc_nec16_register_irq(sc, rman_get_start(sc->irq)) == 0 || 
  199             snc_nec16_register_mem(sc, rman_get_start(sc->iomem)) == 0) {
  200                 snc_release_resources(dev);
  201                 return(ENOENT);
  202         }
  203 
  204         snc_nec16_get_enaddr(sc->sc_iot, sc->sc_ioh, myea);
  205         device_printf(dev, "%s Ethernet\n", snc_nec16_detect_type(myea));
  206 
  207         sc->sc_dev = dev;
  208 
  209         sc->sncr_dcr = DCR_SYNC | DCR_WAIT0 |
  210             DCR_DMABLOCK | DCR_RFT16 | DCR_TFT28;
  211         sc->sncr_dcr2 = 0;      /* XXX */
  212         sc->bitmode = 0;        /* 16 bit card */
  213 
  214         sc->sc_nic_put = snc_nec16_nic_put;
  215         sc->sc_nic_get = snc_nec16_nic_get;
  216         sc->sc_writetodesc = snc_nec16_writetodesc;
  217         sc->sc_readfromdesc = snc_nec16_readfromdesc;
  218         sc->sc_copytobuf = snc_nec16_copytobuf;
  219         sc->sc_copyfrombuf = snc_nec16_copyfrombuf;
  220         sc->sc_zerobuf = snc_nec16_zerobuf;
  221 
  222         /* sncsetup returns 1 if something fails */
  223         if (sncsetup(sc, myea)) {
  224                 snc_release_resources(dev);
  225                 return(ENOENT);
  226         }
  227 
  228         mtx_init(&sc->sc_lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
  229             MTX_DEF);
  230         callout_init_mtx(&sc->sc_timer, &sc->sc_lock, 0);
  231         error = sncconfig(sc, NULL, 0, 0, myea);
  232         if (error) {
  233                 snc_release_resources(dev);
  234                 mtx_destroy(&sc->sc_lock);
  235                 return (error);
  236         }
  237 
  238         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
  239                                NULL, sncintr, sc, &sc->irq_handle);
  240         if (error) {
  241                 printf("snc_isa_attach: bus_setup_intr() failed\n");
  242                 ether_ifdetach(sc->sc_ifp);             
  243                 snc_release_resources(dev);
  244                 mtx_destroy(&sc->sc_lock);
  245                 return (error);
  246         }
  247 
  248         return 0;
  249 }
  250 
  251 /****************************************************************
  252   Shutdown routine
  253  ****************************************************************/
  254 
  255 int
  256 snc_shutdown(dev)
  257         device_t dev;
  258 {
  259         struct snc_softc *sc = device_get_softc(dev);
  260 
  261         SNC_LOCK(sc);
  262         sncshutdown(sc);
  263         SNC_UNLOCK(sc);
  264 
  265         return (0);
  266 }

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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