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

     /*      $NetBSD: ess_isa.c,v 1.10 2002/10/02 03:10:46 thorpej Exp $     */
     
     /*-
      * Copyright (c) 1999 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Nathan J. Williams.
      *
     * 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.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: ess_isa.c,v 1.10 2002/10/02 03:10:46 thorpej Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/device.h>
    
    #include <machine/cpu.h>
    #include <machine/bus.h>
    
    #include <dev/isa/isavar.h>
    
    #include <dev/isa/essreg.h>
    #include <dev/isa/essvar.h>
    
    #ifdef ESS_ISA_DEBUG
    #define DPRINTF(x)      printf x
    #else
    #define DPRINTF(x)
    #endif
    
    int ess_isa_probe __P((struct device *, struct cfdata *, void *));
    void ess_isa_attach __P((struct device *, struct device *, void *));
    
    CFATTACH_DECL(ess_isa, sizeof(struct ess_softc),
        ess_isa_probe, ess_isa_attach, NULL, NULL);
    
    int
    ess_isa_probe(parent, match, aux)
            struct device *parent;
            struct cfdata *match;
            void *aux;
    {
            int ret;   
            struct isa_attach_args *ia = aux;
            struct ess_softc probesc, *sc= &probesc;
    
            if (ia->ia_nio < 1)
                    return (0);
            if (ia->ia_nirq < 1)
                    return (0);
            if (ia->ia_ndrq < 1)
                    return (0);
    
            if (ISA_DIRECT_CONFIG(ia))
                    return (0);
    
            memset(sc, 0, sizeof *sc);
    
            sc->sc_ic = ia->ia_ic;
            sc->sc_iot = ia->ia_iot;
            sc->sc_iobase = ia->ia_io[0].ir_addr;
            if (bus_space_map(sc->sc_iot, sc->sc_iobase, ESS_NPORT, 0,
                &sc->sc_ioh)) {
                    DPRINTF(("ess_isa_probe: Couldn't map I/O region at %x, "
                        "size %x\n", sc->sc_iobase, ESS_NPORT));
                    return 0;
            }
    
            sc->sc_audio1.irq = ia->ia_irq[0].ir_irq;
            sc->sc_audio1.ist = IST_EDGE;
           sc->sc_audio1.drq = ia->ia_drq[0].ir_drq;
           sc->sc_audio2.irq = -1;
           sc->sc_audio2.drq = (ia->ia_ndrq > 1) ? ia->ia_drq[1].ir_drq : -1;
   
           ret = essmatch(sc);
                   
           bus_space_unmap(sc->sc_iot, sc->sc_ioh, ESS_NPORT);
   
           if (ret) {
                   DPRINTF(("ess_isa_probe succeeded (score %d)\n", ret));
                   ia->ia_nio = 1;
                   ia->ia_io[0].ir_size = ESS_NPORT;
   
                   ia->ia_nirq = 1;
   
                   if (ia->ia_ndrq > 1 &&
                       ia->ia_drq[1].ir_drq != ISACF_DRQ_DEFAULT)
                           ia->ia_ndrq = 2;
                   else
                           ia->ia_ndrq = 1;
   
                   ia->ia_niomem = 0;
           } else
                   DPRINTF(("ess_isa_probe failed\n"));
                   
           return ret;
   }
   
   void ess_isa_attach(parent, self, aux)
            struct device *parent, *self;
            void *aux;
   {
           struct ess_softc *sc = (void *)self;
           struct isa_attach_args *ia = aux;
   
           printf("\n");
   
           sc->sc_ic = ia->ia_ic;
           sc->sc_iot = ia->ia_iot;
           sc->sc_iobase = ia->ia_io[0].ir_addr;
           if (bus_space_map(sc->sc_iot, sc->sc_iobase, ESS_NPORT, 0,
               &sc->sc_ioh)) {
                   DPRINTF(("ess_isa_attach: Couldn't map I/O region at %x, "
                       "size %x\n", sc->sc_iobase, ESS_NPORT));
                   return;
           }
   
           sc->sc_audio1.irq = ia->ia_irq[0].ir_irq;
           sc->sc_audio1.ist = IST_EDGE;
           sc->sc_audio1.drq = ia->ia_drq[0].ir_drq;
           sc->sc_audio2.irq = -1;
           sc->sc_audio2.drq = ia->ia_ndrq > 1 ? ia->ia_drq[1].ir_drq : -1;
   
           printf("%s", sc->sc_dev.dv_xname);
   
           essattach(sc);
   }

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