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/10.3/sys/dev/snc/if_snc.c 242871 2012-11-10 14:58:06Z nyan $");
   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(device_t dev, int rid)
   70 {
   71         struct snc_softc *sc = device_get_softc(dev);
   72         struct resource *res;
   73 
   74         res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
   75                                  0ul, ~0ul, SNEC_NREGS, RF_ACTIVE);
   76         if (res) {
   77                 sc->ioport = res;
   78                 sc->ioport_rid = rid;
   79                 sc->sc_iot = rman_get_bustag(res);
   80                 sc->sc_ioh = rman_get_bushandle(res);
   81                 return (0);
   82         } else {
   83                 device_printf(dev, "can't assign port\n");
   84                 return (ENOENT);
   85         }
   86 }
   87 
   88 /*
   89  * Allocate a memory resource with the given resource id.
   90  */
   91 int
   92 snc_alloc_memory(device_t dev, int rid)
   93 {
   94         struct snc_softc *sc = device_get_softc(dev);
   95         struct resource *res;
   96 
   97         res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
   98                                  0ul, ~0ul, SNEC_NMEMS, RF_ACTIVE);
   99         if (res) {
  100                 sc->iomem = res;
  101                 sc->iomem_rid = rid;
  102                 sc->sc_memt = rman_get_bustag(res);
  103                 sc->sc_memh = rman_get_bushandle(res);
  104                 return (0);
  105         } else {
  106                 device_printf(dev, "can't assign memory\n");
  107                 return (ENOENT);
  108         }
  109 }
  110 
  111 /*
  112  * Allocate an irq resource with the given resource id.
  113  */
  114 int
  115 snc_alloc_irq(device_t dev, int rid, int flags)
  116 {
  117         struct snc_softc *sc = device_get_softc(dev);
  118         struct resource *res;
  119 
  120         res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | flags);
  121         if (res) {
  122                 sc->irq = res;
  123                 sc->irq_rid = rid;
  124                 return (0);
  125         } else {
  126                 device_printf(dev, "can't assign irq\n");
  127                 return (ENOENT);
  128         }
  129 }
  130 
  131 /*
  132  * Release all resources
  133  */
  134 void
  135 snc_release_resources(device_t dev)
  136 {
  137         struct snc_softc *sc = device_get_softc(dev);
  138 
  139         if (sc->ioport) {
  140                 bus_release_resource(dev, SYS_RES_IOPORT,
  141                                      sc->ioport_rid, sc->ioport);
  142                 sc->ioport = 0;
  143         }
  144         if (sc->iomem) {
  145                 bus_release_resource(dev, SYS_RES_MEMORY,
  146                                      sc->iomem_rid, sc->iomem);
  147                 sc->iomem = 0;
  148         }
  149         if (sc->irq) {
  150                 bus_release_resource(dev, SYS_RES_IRQ,
  151                                      sc->irq_rid, sc->irq);
  152                 sc->irq = 0;
  153         }
  154         if (sc->sc_ifp) {
  155                 if_free(sc->sc_ifp);
  156                 sc->sc_ifp = 0;
  157         }
  158 }
  159 
  160 /****************************************************************
  161   Probe routine
  162  ****************************************************************/
  163 
  164 int
  165 snc_probe(device_t dev, int type)
  166 {
  167         struct snc_softc *sc = device_get_softc(dev);
  168 
  169         return snc_nec16_detectsubr(sc->sc_iot, sc->sc_ioh,
  170                                     sc->sc_memt, sc->sc_memh,
  171                                     rman_get_start(sc->irq),
  172                                     rman_get_start(sc->iomem),
  173                                     type);
  174 }
  175 
  176 /****************************************************************
  177   Attach routine
  178  ****************************************************************/
  179 
  180 int
  181 snc_attach(device_t dev)
  182 {
  183         struct snc_softc *sc = device_get_softc(dev);
  184         u_int8_t myea[ETHER_ADDR_LEN];
  185         int error;
  186 
  187         if (snc_nec16_register_irq(sc, rman_get_start(sc->irq)) == 0 || 
  188             snc_nec16_register_mem(sc, rman_get_start(sc->iomem)) == 0) {
  189                 snc_release_resources(dev);
  190                 return(ENOENT);
  191         }
  192 
  193         snc_nec16_get_enaddr(sc->sc_iot, sc->sc_ioh, myea);
  194         device_printf(dev, "%s Ethernet\n", snc_nec16_detect_type(myea));
  195 
  196         sc->sc_dev = dev;
  197 
  198         sc->sncr_dcr = DCR_SYNC | DCR_WAIT0 |
  199             DCR_DMABLOCK | DCR_RFT16 | DCR_TFT28;
  200         sc->sncr_dcr2 = 0;      /* XXX */
  201         sc->bitmode = 0;        /* 16 bit card */
  202 
  203         sc->sc_nic_put = snc_nec16_nic_put;
  204         sc->sc_nic_get = snc_nec16_nic_get;
  205         sc->sc_writetodesc = snc_nec16_writetodesc;
  206         sc->sc_readfromdesc = snc_nec16_readfromdesc;
  207         sc->sc_copytobuf = snc_nec16_copytobuf;
  208         sc->sc_copyfrombuf = snc_nec16_copyfrombuf;
  209         sc->sc_zerobuf = snc_nec16_zerobuf;
  210 
  211         /* sncsetup returns 1 if something fails */
  212         if (sncsetup(sc, myea)) {
  213                 snc_release_resources(dev);
  214                 return(ENOENT);
  215         }
  216 
  217         mtx_init(&sc->sc_lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
  218             MTX_DEF);
  219         callout_init_mtx(&sc->sc_timer, &sc->sc_lock, 0);
  220         error = sncconfig(sc, NULL, 0, 0, myea);
  221         if (error) {
  222                 snc_release_resources(dev);
  223                 mtx_destroy(&sc->sc_lock);
  224                 return (error);
  225         }
  226 
  227         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
  228                                NULL, sncintr, sc, &sc->irq_handle);
  229         if (error) {
  230                 printf("snc_isa_attach: bus_setup_intr() failed\n");
  231                 ether_ifdetach(sc->sc_ifp);             
  232                 snc_release_resources(dev);
  233                 mtx_destroy(&sc->sc_lock);
  234                 return (error);
  235         }
  236 
  237         return 0;
  238 }
  239 
  240 /****************************************************************
  241   Shutdown routine
  242  ****************************************************************/
  243 
  244 int
  245 snc_shutdown(device_t dev)
  246 {
  247         struct snc_softc *sc = device_get_softc(dev);
  248 
  249         SNC_LOCK(sc);
  250         sncshutdown(sc);
  251         SNC_UNLOCK(sc);
  252 
  253         return (0);
  254 }

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

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sys/dev/snc/if_snc.c