if_lc_isa.c

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    1 /*      $NetBSD: if_lc_isa.c,v 1.16 2002/10/02 03:10:48 thorpej Exp $ */
    2 
    3 /*-
    4  * Copyright (c) 1994, 1995, 1997 Matt Thomas <matt@3am-software.com>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. The name of the author may not be used to endorse or promote products
   13  *    derived from this software without specific prior written permission
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   25  */
   26 
   27 /*
   28  * DEC EtherWORKS 3 Ethernet Controllers
   29  *
   30  * Written by Matt Thomas
   31  *
   32  *   This driver supports the LEMAC (DE203, DE204, and DE205) cards.
   33  */
   34 
   35 #include <sys/cdefs.h>
   36 __KERNEL_RCSID(0, "$NetBSD: if_lc_isa.c,v 1.16 2002/10/02 03:10:48 thorpej Exp $");
   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/select.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_ether.h>
   52 #include <net/if_media.h>
   53 
   54 #include <machine/cpu.h>
   55 #include <machine/bus.h>
   56 #include <machine/intr.h>
   57 
   58 #include <dev/ic/lemacreg.h>
   59 #include <dev/ic/lemacvar.h>
   60 
   61 #include <dev/isa/isavar.h>
   62 
   63 extern struct cfdriver lc_cd;
   64 
   65 static int lemac_isa_find __P((lemac_softc_t *, struct isa_attach_args *,
   66     int));
   67 static int lemac_isa_probe __P((struct device *, struct cfdata *, void *));
   68 static void lemac_isa_attach __P((struct device *, struct device *, void *));
   69 
   70 CFATTACH_DECL(lc_isa, sizeof(lemac_softc_t),
   71     lemac_isa_probe, lemac_isa_attach, NULL, NULL);
   72 
   73 static int
   74 lemac_isa_find(sc, ia, attach)
   75         lemac_softc_t *sc;
   76         struct isa_attach_args *ia;
   77         int attach;
   78 {
   79         bus_addr_t maddr;
   80         bus_addr_t msize;
   81         int rv = 0, irq;
   82 
   83         if (ia->ia_nio < 1)
   84                 return (0);
   85         if (ia->ia_niomem < 1)
   86                 return (0);
   87         if (ia->ia_nirq < 1)
   88                 return (0);
   89 
   90         if (ISA_DIRECT_CONFIG(ia))
   91                 return (0);
   92 
   93         /*
   94          * Disallow wildcarded i/o addresses.
   95          */
   96         if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT)
   97                 return 0;
   98 
   99         /*
  100          * Make sure this is a valid LEMAC address.
  101          */
  102         if (ia->ia_io[0].ir_addr & (LEMAC_IOSIZE - 1))
  103                 return 0;
  104 
  105         sc->sc_iot = ia->ia_iot;
  106 
  107         if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, LEMAC_IOSIZE, 0,
  108             &sc->sc_ioh)) {
  109                 if (attach)
  110                         printf(": can't map i/o space\n");
  111                 return 0;
  112         }
  113 
  114         /*
  115          * Read the Ethernet address from the EEPROM.
  116          * It must start with one of the DEC OUIs and pass the
  117          * DEC ethernet checksum test.
  118          */
  119         if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0)
  120                 goto outio;
  121 
  122         /*
  123          * Get information about memory space and attempt to map it.
  124          */
  125         lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msize, &irq);
  126 
  127         if (ia->ia_iomem[0].ir_addr != ISACF_IOMEM_DEFAULT &&
  128             ia->ia_iomem[0].ir_addr != maddr)
  129                 goto outio;
  130 
  131         sc->sc_memt = ia->ia_memt;
  132         if (bus_space_map(ia->ia_memt, maddr, msize, 0, &sc->sc_memh)) {
  133                 if (attach)
  134                         printf(": can't map mem space\n");
  135                 goto outio;
  136         }
  137 
  138 
  139         /*
  140          * Double-check IRQ configuration.
  141          */
  142         if (ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT &&
  143             ia->ia_irq[0].ir_irq != irq)
  144                 printf("%s: overriding IRQ %d to %d\n", sc->sc_dv.dv_xname,
  145                        ia->ia_irq[0].ir_irq, irq);
  146 
  147         if (attach) {
  148                 sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc);
  149                 if (sc->sc_ats == NULL)
  150                         printf("\n%s: warning: can't establish shutdown hook\n",
  151                             sc->sc_dv.dv_xname);
  152 
  153                 lemac_ifattach(sc);
  154 
  155                 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE,
  156                     IPL_NET, lemac_intr, sc);
  157         }
  158 
  159         /*
  160          * I guess we've found one.
  161          */
  162         rv = 1;
  163 
  164         ia->ia_nio = 1;
  165         ia->ia_io[0].ir_size = LEMAC_IOSIZE;
  166 
  167         ia->ia_niomem = 1;
  168         ia->ia_iomem[0].ir_addr = maddr;
  169         ia->ia_iomem[0].ir_size = msize;
  170 
  171         ia->ia_nirq = 1;
  172         ia->ia_irq[0].ir_irq = irq;
  173 
  174         ia->ia_ndrq = 0;
  175 
  176         if (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 static int
  185 lemac_isa_probe(parent, match, aux)
  186         struct device *parent;
  187         struct cfdata *match;
  188         void *aux;
  189 {
  190         struct isa_attach_args *ia = aux;
  191         struct cfdata *cf = match;
  192         lemac_softc_t sc;
  193         (void)sprintf(sc.sc_dv.dv_xname, "%s%d", lc_cd.cd_name, cf->cf_unit);
  194     
  195         return lemac_isa_find(&sc, ia, 0);
  196 }
  197 
  198 static void
  199 lemac_isa_attach(parent, self, aux)
  200         struct device *parent;
  201         struct device *self;
  202         void *aux;
  203 {
  204         lemac_softc_t *sc = (void *)self;
  205         struct isa_attach_args *ia = aux;
  206 
  207         (void) lemac_isa_find(sc, ia, 1);
  208 }

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sys/dev/isa/if_lc_isa.c