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
  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 }