The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/snc/if_snc_pccard.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("$FreeBSD$");
   31 
   32 /*
   33  *      National Semiconductor  DP8393X SONIC Driver
   34  *
   35  *      This is the PC-Card attachment on FreeBSD
   36  *              written by Motomichi Matsuzaki <mzaki@e-mail.ne.jp> and
   37  *                         Hiroshi Yamashita <bluemoon@msj.biglobe.ne.jp>
   38  */
   39 
   40 #include <sys/param.h>
   41 #include <sys/systm.h>
   42 #include <sys/socket.h>
   43 #include <sys/kernel.h>
   44 
   45 #include <sys/module.h>
   46 #include <sys/bus.h>
   47 #include <machine/bus.h>
   48 
   49 #include <net/if.h>
   50 #include <net/if_arp.h>
   51 #include <net/if_media.h>
   52 
   53 
   54 #include <dev/snc/dp83932var.h>
   55 #include <dev/snc/if_sncvar.h>
   56 #include <dev/snc/if_sncreg.h>
   57 
   58 /*
   59  *      PC-Card (PCMCIA) specific code.
   60  */
   61 static int      snc_pccard_probe(device_t);
   62 static int      snc_pccard_attach(device_t);
   63 static int      snc_pccard_detach(device_t);
   64 
   65 
   66 static device_method_t snc_pccard_methods[] = {
   67         /* Device interface */
   68         DEVMETHOD(device_probe,         snc_pccard_probe),
   69         DEVMETHOD(device_attach,        snc_pccard_attach),
   70         DEVMETHOD(device_detach,        snc_pccard_detach),
   71 
   72         { 0, 0 }
   73 };
   74 
   75 static driver_t snc_pccard_driver = {
   76         "snc",
   77         snc_pccard_methods,
   78         sizeof(struct snc_softc)
   79 };
   80 
   81 DRIVER_MODULE(snc, pccard, snc_pccard_driver, snc_devclass, 0, 0);
   82 MODULE_DEPEND(snc, ether, 1, 1, 1);
   83 
   84 /*
   85  *      snc_pccard_detach - detach this instance from the device.
   86  */
   87 static int
   88 snc_pccard_detach(device_t dev)
   89 {
   90         struct snc_softc *sc = device_get_softc(dev);
   91         struct ifnet *ifp = sc->sc_ifp;
   92 
   93         if (sc->gone) {
   94                 device_printf(dev, "already unloaded\n");
   95                 return (0);
   96         }
   97         sncshutdown(sc);
   98         ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
   99         if_detach(ifp);
  100         sc->gone = 1;
  101         bus_teardown_intr(dev, sc->irq, sc->irq_handle);
  102         snc_release_resources(dev);
  103         return (0);
  104 }
  105 
  106 /* 
  107  * Probe the pccard.
  108  */
  109 static int
  110 snc_pccard_probe(device_t dev)
  111 {
  112         int     error;
  113 
  114         error = snc_alloc_port(dev, 0);
  115         error = max(error, snc_alloc_memory(dev, 0));
  116         error = max(error, snc_alloc_irq(dev, 0, 0));
  117 
  118         if (!error && !snc_probe(dev, SNEC_TYPE_PNP))
  119                 error = ENOENT;
  120 
  121         snc_release_resources(dev);
  122         return (error);
  123 }
  124 
  125 static int
  126 snc_pccard_attach(device_t dev)
  127 {
  128         struct snc_softc *sc = device_get_softc(dev);
  129         int error;
  130         
  131         bzero(sc, sizeof(struct snc_softc));
  132 
  133         snc_alloc_port(dev, 0);
  134         snc_alloc_memory(dev, 0);
  135         snc_alloc_irq(dev, 0, 0);
  136                 
  137         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET,
  138                                sncintr, sc, &sc->irq_handle);
  139         if (error) {
  140                 printf("snc_isa_attach: bus_setup_intr() failed\n");
  141                 snc_release_resources(dev);
  142                 return (error);
  143         }              
  144 
  145         /* This interface is always enabled. */
  146         sc->sc_enabled = 1;
  147 
  148         /* pccard_get_ether(dev, ether_addr); */
  149 
  150         return snc_attach(dev);
  151 } 

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