FreeBSD/Linux Kernel Cross Reference
sys/dev/mca/if_ne_mca.c

     /*      $NetBSD: if_ne_mca.c,v 1.6 2002/10/02 16:34:12 thorpej Exp $    */
     
     /*-
      * Copyright (c) 2001 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Jaromir Dolecek.
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the NetBSD
     *      Foundation, Inc. and its contributors.
     * 4. Neither the name of The NetBSD Foundation nor the names of its
     *    contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    /*
     * Driver for Novell NE/2 Ethernet Adapter (and clones).
     *
     * According to Linux ne2 driver, Arco and Compex card should be also
     * supported by this driver. However, NetBSD driver was only tested
     * with the Novell adapter so far.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: if_ne_mca.c,v 1.6 2002/10/02 16:34:12 thorpej Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/mbuf.h>
    #include <sys/errno.h>
    #include <sys/device.h>
    #include <sys/protosw.h>
    #include <sys/socket.h>
    
    #include <net/if.h>
    #include <net/if_types.h>
    #include <net/if_media.h>
    #include <net/if_ether.h>
    
    #include <machine/bus.h>
    
    #include <dev/ic/dp8390reg.h>
    #include <dev/ic/dp8390var.h>
    
    #include <dev/ic/ne2000reg.h>
    #include <dev/ic/ne2000var.h>
    
    #include <dev/ic/rtl80x9reg.h>
    #include <dev/ic/rtl80x9var.h>
    
    #include <dev/mca/mcadevs.h>
    #include <dev/mca/mcavar.h>
    
    #define NE2_NPORTS      0x30
    
    struct ne_mca_softc {
            struct ne2000_softc sc_ne2000;          /* real "ne2000" softc */
    
            /* MCA-specific goo */
            void            *sc_ih;         /* interrupt handle */
    };
    
    int     ne_mca_match __P((struct device *, struct cfdata *, void *));
    void    ne_mca_attach __P((struct device *, struct device *, void *));
    
    CFATTACH_DECL(ne_mca, sizeof(struct ne_mca_softc),
        ne_mca_match, ne_mca_attach, NULL, NULL);
    
    static const struct ne_mca_products {
            u_int32_t ne_id;
            const char *ne_name;
    } ne_mca_products[] = {
            { MCA_PRODUCT_ARCOAE,   "Arco Electronics AE/2 Ethernet Adapter" },
            { MCA_PRODUCT_NE2,      "Novell NE/2 Ethernet Adapter" },
            { MCA_PRODUCT_CENET16, "Compex Inc. PS/2 ENET16-MC/P Microchannel Ad."},
            { 0, NULL }
   };
   
   static const struct ne_mca_products *ne_mca_lookup __P((int id));
   
   static const struct ne_mca_products *
   ne_mca_lookup(int id)
   {
           const struct ne_mca_products *np;
   
           for(np = ne_mca_products; np->ne_name; np++) 
                   if (id == np->ne_id)
                           return (np);
   
           return (NULL);
   }
   
   int
   ne_mca_match(struct device *parent, struct cfdata *cf, void *aux)
   {
           struct mca_attach_args *ma = aux;
   
           if (ne_mca_lookup(ma->ma_id))
                   return (1);
   
           return (0);
   }
   
   /* These values were taken from NE/2 ADF file */
   static const int ne_mca_irq[] = {
           3, 4, 5, 9
   };
   static const int ne_mca_iobase[] = {
           0, 0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0
   };
   
   void
   ne_mca_attach(struct device *parent, struct device *self, void *aux)
   {
           struct ne_mca_softc *psc = (struct ne_mca_softc *)self;
           struct ne2000_softc *nsc = &psc->sc_ne2000;
           struct dp8390_softc *dsc = &nsc->sc_dp8390;
           struct mca_attach_args *ma = aux;
           bus_space_tag_t nict;
           bus_space_handle_t nich;
           bus_space_tag_t asict;
           bus_space_handle_t asich;
           int pos2, iobase, irq;
           const struct ne_mca_products *np;
   
           pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
   
           /*
            * POS register 2: (adf pos0)
            * 
            * 7 6 5 4 3 2 1 0
            *   \_/ | \___/ \__ enable: 0=adapter disabled, 1=adapter enabled
            *    |  |     \____ I/O, Mem: 001=0x1000-0x102f 010=0x2020-0x204f
            *    |  |             011=0x8020-0x804f 100=0xa0a0-0xa0cf
            *    |  |             101=0xb0b0-0xb0df 110=0xc0c0-0xc0ef
            *     \  \            111=0xc3d0-0xc3ff
            *      \  \________ Boot Rom: 1=disabled 0=enabled
            *       \__________ Interrupt level: 00=3 01=4 10=5 11=9
            */
   
           np = ne_mca_lookup(ma->ma_id);
   
           iobase = ne_mca_iobase[(pos2 & 0x0e) >> 1];
           irq = ne_mca_irq[(pos2 & 0x60) >> 5];
           
           printf(" slot %d irq %d: %s\n", ma->ma_slot + 1, irq, np->ne_name);
   
           nict = ma->ma_iot;
   
           /* Map the device. */
           if (bus_space_map(nict, iobase, NE2_NPORTS, 0, &nich)) {
                   printf("%s: can't map i/o space\n", dsc->sc_dev.dv_xname);
                   return;
           }
   
           asict = nict;
           if (bus_space_subregion(nict, nich, NE2000_ASIC_OFFSET,
               NE2000_ASIC_NPORTS, &asich)) {
                   printf("%s: can't subregion i/o space\n", dsc->sc_dev.dv_xname);
                   return;
           }
   
           dsc->sc_regt = nict;
           dsc->sc_regh = nich;
   
           nsc->sc_asict = asict;
           nsc->sc_asich = asich;
   
           /* This interface is always enabled. */
           dsc->sc_enabled = 1;
   
           dsc->sc_mediachange     = NULL;
           dsc->sc_mediastatus     = NULL;
           dsc->sc_media_init      = NULL;
           dsc->init_card          = NULL;
   
           /*
            * This is necessary for NE/2. Hopefully the other clones also work
            * this way.
            */
           nsc->sc_type = NE2000_TYPE_AX88190;
   
           /*
            * Do generic NE2000 attach.  This will read the station address
            * from the EEPROM.
            */
           if (ne2000_attach(nsc, NULL))
                   return;
   
           /* establish interrupt handler */
           psc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET, dp8390_intr,
                           dsc);
           if (psc->sc_ih == NULL) {
                   printf("%s: couldn't establish interrupt handler\n",
                          dsc->sc_dev.dv_xname);
                   return;
           }
   }

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