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

     /*      $OpenBSD: sb_isapnp.c,v 1.17 2022/04/06 18:59:29 naddy Exp $    */
     /*      $NetBSD: sb_isa.c,v 1.3 1997/03/20 11:03:11 mycroft Exp $       */
     
     /*
      * Copyright (c) 1991-1993 Regents of the University of California.
      * All rights reserved.
      *
      * 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 Computer Systems
     *      Engineering Group at Lawrence Berkeley Laboratory.
     * 4. Neither the name of the University nor of the Laboratory may be used
     *    to endorse or promote products derived from this software without
     *    specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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/param.h>
    #include <sys/systm.h>
    #include <sys/errno.h>
    #include <sys/ioctl.h>
    #include <sys/syslog.h>
    #include <sys/device.h>
    
    #include <sys/audioio.h>
    #include <dev/audio_if.h>
    #include <dev/midi_if.h>
    
    #include <dev/isa/isavar.h>
    #include <dev/isa/isadmavar.h>
    
    #include <dev/isa/sbreg.h>
    #include <dev/isa/sbvar.h>
    
    #include <dev/isa/sbdspvar.h>
    
    int     sb_isapnp_match(struct device *, void *, void *);
    void    sb_isapnp_attach(struct device *, struct device *, void *);
    
    const struct cfattach sb_isapnp_ca = {
            sizeof(struct sbdsp_softc), sb_isapnp_match, sb_isapnp_attach
    };
    
    /*
     * Probe / attach routines.
     */
    
    /*
     * Probe for the soundblaster hardware.
     */
    int
    sb_isapnp_match(struct device *parent, void *match, void *aux)
    {
            struct isa_attach_args *ia = aux;
    
            if (ia->ipa_ndrq < 1)
                    return 0;
            return 1;
    }
    
    /*
     * Attach hardware to driver, attach hardware driver to audio
     * pseudo-device driver.
     */
    void
    sb_isapnp_attach(struct device *parent, struct device *self, void *aux)
    {
            struct sbdsp_softc *sc = (struct sbdsp_softc *) self;
            struct isa_attach_args *ia = aux;
    
            sc->sc_iot = ia->ia_iot;
            sc->sc_ioh = ia->ipa_io[0].h;
            sc->sc_irq = ia->ipa_irq[0].num;
            sc->sc_iobase = ia->ipa_io[0].base;
            sc->sc_ic = ia->ia_ic;
            sc->sc_drq8 = ia->ipa_drq[0].num;
            
            if (ia->ipa_ndrq > 1 && ia->ipa_drq[0].num != ia->ipa_drq[1].num) {
                    /* Some cards have the 16 bit drq first */
                   if (sc->sc_drq8 >= 4) {
                           sc->sc_drq16 = sc->sc_drq8;
                           sc->sc_drq8 = ia->ipa_drq[1].num;
                   } else
                           sc->sc_drq16 = ia->ipa_drq[1].num;
           } else
                   sc->sc_drq16 = DRQUNK;
   
   #if NMIDI > 0
           if (ia->ipa_nio > 1) {
                   sc->sc_mpu_sc.iobase = ia->ipa_io[1].base;
                   sc->sc_mpu_sc.ioh = ia->ipa_io[1].h;
           } else
                   sc->sc_mpu_sc.iobase = 0;
   #endif
   
           if (!sbmatch(sc)) {
                   printf(": sbmatch failed\n");
                   return;
           }
   
           sc->sc_isa = parent->dv_parent;
           sbattach(sc);
   }

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