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

     /*      $NetBSD: if_ate_mca.c,v 1.10 2003/02/23 04:11:51 simonb 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 ATI AT1720X MCA cards based on Fujitsu MB8696xA controller.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: if_ate_mca.c,v 1.10 2003/02/23 04:11:51 simonb Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/device.h>
    #include <sys/socket.h>
    #include <sys/syslog.h>
    
    #include <net/if.h>
    #include <net/if_ether.h>
    #include <net/if_media.h>
    
    #include <machine/bus.h>
    #include <machine/intr.h>
    
    #include <dev/ic/mb86960reg.h>
    #include <dev/ic/mb86960var.h>
    
    #include <dev/mca/mcavar.h>
    #include <dev/mca/mcadevs.h>
    
    int     ate_mca_match __P((struct device *, struct cfdata *, void *));
    void    ate_mca_attach __P((struct device *, struct device *, void *));
    static void ate_mca_detect __P((bus_space_tag_t, bus_space_handle_t,
        u_int8_t enaddr[ETHER_ADDR_LEN]));
    
    #define ATE_NPORTS 0x20
    
    struct ate_softc {
            struct  mb86960_softc sc_mb86960;       /* real "mb86960" softc */
    
            /* MCA-specific goo. */
            void    *sc_ih;                         /* interrupt cookie */
    };
    
    CFATTACH_DECL(ate_mca, sizeof(struct ate_softc),
        ate_mca_match, ate_mca_attach, NULL, NULL);
    
    static const struct ate_mca_product {
            u_int32_t       at_prodid;      /* MCA product ID */
            const char      *at_name;       /* device name */
            int             at_type;        /* device type */
    } ate_mca_products[] = {
            { MCA_PRODUCT_AT1720T,  "ATI AT1720T",  FE_TYPE_AT1700T         },
            { MCA_PRODUCT_AT1720BT, "ATI AT1720BT", FE_TYPE_AT1700BT        },
            { MCA_PRODUCT_AT1720AT, "ATI AT1720AT", FE_TYPE_AT1700AT        },
            { MCA_PRODUCT_AT1720FT, "ATI AT1720FT", FE_TYPE_AT1700FT        },
            { 0,    },
    };
    
    static const struct ate_mca_product *ate_mca_lookup __P((u_int32_t));
    
    static const struct ate_mca_product *
    ate_mca_lookup(id)
            u_int32_t id;
    {
           const struct ate_mca_product *atp;
   
           for (atp = ate_mca_products; atp->at_name != NULL; atp++)
                   if (id == atp->at_prodid)
                           return (atp);
   
           return (NULL);
   }
   
   int
   ate_mca_match(parent, match, aux)
           struct device *parent;
           struct cfdata *match;
           void *aux;
   {
           struct mca_attach_args *ma = (struct mca_attach_args *) aux;
   
           if (ate_mca_lookup(ma->ma_id) != NULL)
                   return (1);
   
           return (0);
   }
   
   /* see POS diagrams below for explanation of these arrays' contents */
   static const int ats_iobase[] = {
           0x400, 0x2400, 0x4400, 0x6400, 0x1400, 0x3400, 0x5400, 0x7400
   };
   static const int ats_irq[] = {
           3, 4, 5, 9, 10, 11, 12, 15
   };
   
   void
   ate_mca_attach(parent, self, aux)
           struct device *parent, *self;
           void *aux;
   {
           struct ate_softc *isc = (struct ate_softc *)self;
           struct mb86960_softc *sc = &isc->sc_mb86960;
           struct mca_attach_args *ma = aux;
           bus_space_tag_t iot = ma->ma_iot;
           bus_space_handle_t ioh;
           u_int8_t myea[ETHER_ADDR_LEN];
           int pos3, pos4;
           int iobase, irq;
           const struct ate_mca_product *atp;
   
           pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3);
           pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4);
   
           /*
            * POS register 2: (adf pos0)
            * 7 6 5 4 3 2 1 0
            *               \__ enable: 0=adapter disabled, 1=adapter enabled
            *
            * POS register 3: (adf pos1)
            * 
            * 7 6 5 4 3 2 1 0
            * \_/ \___/ \___/
            *   \     \     \__ I/O Port Addresses: 000=0x400-0x4FF 100=0x1400-
            *    \     \          001=0x2400 101=0x3400 010=0x4400 110=0x5400
            *     \     \         011=0x6400 111=0x7400
            *      \     \_____ Boot ROM Memory Address
            *       \
            *        \_________ Lower 2 bit of Interrupt Request Number
            *
            * POS register 4: (adf pos2)
            * 
            * 7 6 5 4 3 2 1 0
            *   \      \_______ Twisted Pair Type: 0=100 ohm, Unshielded
            *    \                1=150 ohm, Shielded
            *     \____________ Higher 1 bit of Interrupt Request Number:
            *                   000=3 001=4 010=5 011=9 100=10 101=11 110=12 111=15
            */
   
           atp = ate_mca_lookup(ma->ma_id);
   #ifdef DIAGNOSTIC
           if (atp == NULL) {
                   printf("\n%s: where did the card go?\n", sc->sc_dev.dv_xname);
                   return;
           }
   #endif
   
           iobase = ats_iobase[pos3 & 0x7];
           irq = ats_irq[((pos4 & 0x40) >> 4) | ((pos3 & 0xc0) >> 6)];
   
           printf(" slot %d irq %d: %s\n", ma->ma_slot + 1, irq, atp->at_name);
   
           /* Map i/o space. */
           if (bus_space_map(iot, iobase, ATE_NPORTS, 0, &ioh)) {
                   printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
                   return;
           }
   
           sc->sc_bst = iot;
           sc->sc_bsh = ioh;
   
           /* Get ethernet address. */
           ate_mca_detect(iot, ioh, myea);
   
           /* This interface is always enabled. */
           sc->sc_stat |= FE_STAT_ENABLED;
   
           /*
            * Do generic MB86960 attach.
            */
           mb86960_attach(sc, myea);
   
           mb86960_config(sc, NULL, 0, 0);
   
           /* Establish the interrupt handler. */
           isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET,
                           mb86960_intr, sc);
           if (isc->sc_ih == NULL) {
                   printf("%s: couldn't establish interrupt handler\n",
                       sc->sc_dev.dv_xname);
                   return;
           }
   }
   
   /*
    * Very simplified ate_detect() from dev/isa/if_ate.c, only
    * to determine ethernet address.
    */
   static void
   ate_mca_detect(iot, ioh, enaddr)
           bus_space_tag_t iot;
           bus_space_handle_t ioh;
           u_int8_t enaddr[ETHER_ADDR_LEN];
   {
           u_int8_t eeprom[FE_EEPROM_SIZE];
   
           /* Get our station address from EEPROM. */
           mb86965_read_eeprom(iot, ioh, eeprom);
           memcpy(enaddr, eeprom + FE_ATI_EEP_ADDR, ETHER_ADDR_LEN);
   }

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