sys/dev/snc/if_snc.c

   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 }