FreeBSD/Linux Kernel Cross Reference
sys/dev/isa/if_sm_isa.c

     /*      $OpenBSD: if_sm_isa.c,v 1.16 2022/04/06 18:59:28 naddy Exp $    */
     /*      $NetBSD: if_sm_isa.c,v 1.4 1998/07/05 06:49:14 jonathan Exp $   */
     
     /*-
      * Copyright (c) 1997 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
     * NASA Ames Research Center.
     *
     * 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.
     *
     * 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.
     */
    
    #include "bpfilter.h"
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/mbuf.h>
    #include <sys/socket.h>
    #include <sys/ioctl.h>
    #include <sys/errno.h>
    #include <sys/syslog.h>
    #include <sys/selinfo.h>
    #include <sys/timeout.h>
    #include <sys/device.h>
    
    #include <net/if.h>
    #include <net/if_media.h>
    
    #include <netinet/in.h>
    #include <netinet/if_ether.h>
    
    #if NBPFILTER > 0
    #include <net/bpf.h>
    #endif
    
    #include <machine/intr.h>
    #include <machine/bus.h>
    
    #include <dev/mii/mii.h>
    #include <dev/mii/miivar.h>
    
    #include <dev/ic/smc91cxxreg.h>
    #include <dev/ic/smc91cxxvar.h>
    
    #include <dev/isa/isavar.h>
    
    int     sm_isa_match(struct device *, void *, void *);
    void    sm_isa_attach(struct device *, struct device *, void *);
    
    struct sm_isa_softc {
            struct  smc91cxx_softc sc_smc;          /* real "smc" softc */
    
            /* ISA-specific goo. */
            void    *sc_ih;                         /* interrupt cookie */
    };
    
    const struct cfattach sm_isa_ca = {
            sizeof(struct sm_isa_softc), sm_isa_match, sm_isa_attach
    };
    
    int
    sm_isa_match(struct device *parent, void *match, void *aux)
    {
            struct isa_attach_args *ia = aux;
            bus_space_tag_t iot = ia->ia_iot;
            bus_space_handle_t ioh;
            u_int16_t tmp;
            int rv = 0;
            extern const char *smc91cxx_idstrs[];
    
            /* Disallow wildcarded values. */
            if (ia->ia_irq == -1)
                    return (0);
            if (ia->ia_iobase == -1)
                    return (0);
    
            /* Map i/o space. */
            if (bus_space_map(iot, ia->ia_iobase, SMC_IOSIZE, 0, &ioh))
                   return (0);
   
           /* Check that high byte of BANK_SELECT is what we expect. */
           tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
           if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
                   goto out;
   
           /*
            * Switch to bank 0 and perform the test again.
            * XXX INVASIVE!
            */
           bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 0);
           tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
           if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
                   goto out;
   
           /*
            * Switch to bank 1 and check the base address register.
            * XXX INVASIVE!
            */
           bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 1);
           tmp = bus_space_read_2(iot, ioh, BASE_ADDR_REG_W);
           if (ia->ia_iobase != ((tmp >> 3) & 0x3e0))
                   goto out;
   
           /*
            * Check for a recognized chip id.
            * XXX INVASIVE!
            */
           bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 3);
           tmp = bus_space_read_2(iot, ioh, REVISION_REG_W);
           if (smc91cxx_idstrs[RR_ID(tmp)] == NULL)
                   goto out;
   
           /*
            * Assume we have an SMC91Cxx.
            */
           ia->ia_iosize = SMC_IOSIZE;
           rv = 1;
   
    out:
           bus_space_unmap(iot, ioh, SMC_IOSIZE);
           return (rv);
   }
   
   void
   sm_isa_attach(struct device *parent, struct device *self, void *aux)
   {
           struct sm_isa_softc *isc = (struct sm_isa_softc *)self;
           struct smc91cxx_softc *sc = &isc->sc_smc;
           struct isa_attach_args *ia = aux;
           bus_space_tag_t iot = ia->ia_iot;
           bus_space_handle_t ioh;
   
           printf("\n");
   
           /* Map i/o space. */
           if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh))
                   panic("sm_isa_attach: can't map i/o space");
   
           sc->sc_bst = iot;
           sc->sc_bsh = ioh;
   
           /* should always be enabled */
           sc->sc_enabled = 1;
   
           /* XXX Should get Ethernet address from EEPROM!! */
   
           /* Perform generic initialization. */
           smc91cxx_attach(sc, NULL);
   
           /* Establish the interrupt handler. */
           isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
               IPL_NET, smc91cxx_intr, sc, sc->sc_dev.dv_xname);
           if (isc->sc_ih == NULL)
                   printf("%s: couldn't establish interrupt handler\n",
                       sc->sc_dev.dv_xname);
   }

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