root/dev/isa/if_lc_isa.c

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DEFINITIONS

This source file includes following definitions.
  1. lemac_isa_find
  2. lemac_isa_probe
  3. lemac_isa_attach

    1 /*      $OpenBSD: if_lc_isa.c,v 1.7 2005/11/21 18:16:40 millert Exp $ */
    2 /*      $NetBSD: if_lc_isa.c,v 1.10 2001/06/13 10:46:03 wiz Exp $ */
    3 
    4 /*-
    5  * Copyright (c) 1994, 1995, 1997 Matt Thomas <matt@3am-software.com>
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. The name of the author may not be used to endorse or promote products
   14  *    derived from this software without specific prior written permission
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   26  */
   27 
   28 /*
   29  * DEC EtherWORKS 3 Ethernet Controllers
   30  *
   31  * Written by Matt Thomas
   32  *
   33  *   This driver supports the LEMAC (DE203, DE204, and DE205) cards.
   34  */
   35 
   36 #include "bpfilter.h"
   37 
   38 #include <sys/param.h>
   39 #include <sys/systm.h>
   40 #include <sys/mbuf.h>
   41 #include <sys/socket.h>
   42 #include <sys/ioctl.h>
   43 #include <sys/errno.h>
   44 #include <sys/syslog.h>
   45 #include <sys/selinfo.h>
   46 #include <sys/device.h>
   47 #include <sys/queue.h>
   48 
   49 #include <net/if.h>
   50 #include <net/if_dl.h>
   51 #include <net/if_media.h>
   52 
   53 #ifdef INET
   54 #include <netinet/in.h>
   55 #include <netinet/in_systm.h>
   56 #include <netinet/in_var.h>
   57 #include <netinet/ip.h>
   58 #include <netinet/if_ether.h>
   59 #endif
   60 
   61 #if NBPFILTER > 0
   62 #include <net/bpf.h>
   63 #endif
   64 
   65 #include <machine/cpu.h>
   66 #include <machine/bus.h>
   67 #include <machine/intr.h>
   68 
   69 #include <dev/ic/lemacreg.h>
   70 #include <dev/ic/lemacvar.h>
   71 
   72 #include <dev/isa/isavar.h>
   73 
   74 extern struct cfdriver lc_cd;
   75 
   76 int     lemac_isa_find(struct lemac_softc *, struct isa_attach_args *,
   77     int);
   78 int     lemac_isa_probe(struct device *, void *, void *);
   79 void    lemac_isa_attach(struct device *, struct device *, void *);
   80 
   81 struct cfattach lc_isa_ca = {
   82         sizeof(struct lemac_softc), lemac_isa_probe, lemac_isa_attach
   83 };
   84 
   85 int
   86 lemac_isa_find(sc, ia, attach)
   87         struct lemac_softc *sc;
   88         struct isa_attach_args *ia;
   89         int attach;
   90 {
   91         bus_addr_t maddr;
   92         bus_size_t msize;
   93         int rv = 0, irq;
   94 
   95         /*
   96          * Disallow wildcarded i/o addresses.
   97          */
   98         if (ia->ia_iobase == IOBASEUNK)
   99                 return 0;
  100 
  101         /*
  102          * Make sure this is a valid LEMAC address.
  103          */
  104         if (ia->ia_iobase & (LEMAC_IOSIZE - 1))
  105                 return 0;
  106 
  107         sc->sc_iot = ia->ia_iot;
  108 
  109         /*
  110          * Map the LEMAC's port space for the probe sequence.
  111          */
  112         ia->ia_iosize = LEMAC_IOSIZE;
  113 
  114         if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0,
  115             &sc->sc_ioh)) {
  116                 if (attach)
  117                         printf(": can't map i/o space\n");
  118                 return (0);
  119         }
  120 
  121         /*
  122          * Read the Ethernet address from the EEPROM.
  123          * It must start with one of the DEC OUIs and pass the
  124          * DEC ethernet checksum test.
  125          */
  126         if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0)
  127                 goto outio;
  128 
  129         /*
  130          * Get information about memory space and attempt to map it.
  131          */
  132         lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msize, &irq);
  133 
  134         if (ia->ia_maddr != maddr && ia->ia_maddr != MADDRUNK)
  135                 goto outio;
  136 
  137         if (maddr != 0 && msize != 0) {
  138                 sc->sc_memt = ia->ia_memt;
  139                 if (bus_space_map(ia->ia_memt, maddr, msize, 0,
  140                     &sc->sc_memh)) {
  141                         if (attach)
  142                                 printf(": can't map mem space\n");
  143                         goto outio;
  144                 }
  145         }
  146 
  147         /*
  148          * Double-check IRQ configuration.
  149          */
  150         if (ia->ia_irq != irq && ia->ia_irq != IRQUNK)
  151                 printf("%s: overriding IRQ %d to %d\n", sc->sc_dv.dv_xname,
  152                     ia->ia_irq, irq);
  153 
  154         if (attach) {
  155                 sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc);
  156                 if (sc->sc_ats == NULL)
  157                         printf(
  158                             "\n%s: warning: can't establish shutdown hook\n",
  159                             sc->sc_dv.dv_xname);
  160 
  161                 lemac_ifattach(sc);
  162 
  163                 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE,
  164                     IPL_NET, lemac_intr, sc, sc->sc_dv.dv_xname);
  165         }
  166 
  167         /*
  168          * I guess we've found one.
  169          */
  170         rv = 1;
  171 
  172         ia->ia_maddr = maddr;
  173         ia->ia_msize = msize;
  174         ia->ia_irq = irq;
  175 
  176         if (maddr != 0 && msize != 0 && (rv == 0 || !attach))
  177                 bus_space_unmap(sc->sc_memt, sc->sc_memh, msize);
  178 outio:
  179         if (rv == 0 || !attach)
  180                 bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE);
  181         return (rv);
  182 }
  183 
  184 int
  185 lemac_isa_probe(parent, match, aux)
  186         struct device *parent;
  187         void *match;
  188         void *aux;
  189 {
  190         struct isa_attach_args *ia = aux;
  191         struct cfdata *cf = match;
  192         struct lemac_softc sc;
  193 
  194         snprintf(sc.sc_dv.dv_xname, sizeof sc.sc_dv.dv_xname, "%s%d",
  195             lc_cd.cd_name, cf->cf_unit);
  196     
  197         return (lemac_isa_find(&sc, ia, 0));
  198 }
  199 
  200 void
  201 lemac_isa_attach(parent, self, aux)
  202         struct device *parent;
  203         struct device *self;
  204         void *aux;
  205 {
  206         struct lemac_softc *sc = (void *)self;
  207         struct isa_attach_args *ia = aux;
  208 
  209         lemac_isa_find(sc, ia, 1);
  210 }

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