FreeBSD/Linux Kernel Cross Reference
sys/dev/ofisa/sb_ofisa.c

     /*      $NetBSD: sb_ofisa.c,v 1.11 2003/05/03 18:11:32 wiz Exp $        */
     
     /*-
      * Copyright (c) 1998 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.
     * 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: sb_ofisa.c,v 1.11 2003/05/03 18:11:32 wiz Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/device.h>
    
    #include <machine/bus.h>
    #include <machine/intr.h>
    
    #include <sys/audioio.h>
    #include <dev/audio_if.h>
    #include <dev/midi_if.h>
    #include <dev/mulaw.h>
    
    #include <dev/ofw/openfirm.h>
    #include <dev/isa/isavar.h>
    #include <dev/ofisa/ofisavar.h>
    
    #include <dev/isa/sbreg.h>
    #include <dev/isa/sbvar.h>
    #include <dev/isa/sbdspvar.h>
    
    int     sb_ofisa_match __P((struct device *, struct cfdata *, void *));
    void    sb_ofisa_attach __P((struct device *, struct device *, void *));
    
    CFATTACH_DECL(sb_ofisa, sizeof(struct sbdsp_softc),
        sb_ofisa_match, sb_ofisa_attach, NULL, NULL);
    
    int
    sb_ofisa_match(parent, cf, aux)
            struct device *parent;
            struct cfdata *cf;
            void *aux;
    {
            struct ofisa_attach_args *aa = aux;
            static const char *const compatible_strings[] = {
                    "pnpPNP,b000",                  /* generic SB 1.5 */
                    "pnpPNP,b001",                  /* generic SB 2.0 */
                    "pnpPNP,b002",                  /* generic SB Pro */
                    "pnpPNP,b003",                  /* generic SB 16 */
                    NULL,
            };
            int rv = 0;
    
            if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1) {
                    /*
                     * Use a low match priority so that a more specific driver
                     * can match, e.g. a native ESS driver.
                     */
                    rv = 1;
            }
    
            return (rv);
    }
    
    void
    sb_ofisa_attach(parent, self, aux)
            struct device *parent, *self;
            void *aux;
   {
           struct sbdsp_softc *sc = (void *)self;
           struct ofisa_attach_args *aa = aux;
           struct ofisa_reg_desc reg;
           struct ofisa_intr_desc intr;
           struct ofisa_dma_desc dma[2];
           int n, ndrq;
           char *model;
   
           /*
            * We're living on an OFW.  We have to ask the OFW what our
            * registers and interrupts properties look like.
            *
            * We expect:
            *
            *      1 i/o register region
            *      1 interrupt
            *      1 or 2 DMA channels
            */
   
           n = ofisa_reg_get(aa->oba.oba_phandle, &reg, 1);
           if (n != 1) {
                   printf(": error getting register data\n");
                   return;
           }
           if (reg.type != OFISA_REG_TYPE_IO) {
                   printf(": register type not i/o\n");
                   return;
           }
           if (reg.len != SB_NPORT && reg.len != SBP_NPORT) {
                   printf(": weird register size (%lu, expected %d or %d)\n",
                       (unsigned long)reg.len, SB_NPORT, SBP_NPORT);
                   return;
           }
   
           n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
           if (n != 1) {
                   printf(": error getting interrupt data\n");
                   return;
           }
   
           ndrq = ofisa_dma_get(aa->oba.oba_phandle, dma, 2);
           if (ndrq != 1 && ndrq != 2) {
                   printf(": error getting DMA data\n");
                   return;
           }
   
           sc->sc_ic = aa->ic;
   
           sc->sc_iot = aa->iot;
           if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, &sc->sc_ioh)) {
                   printf(": unable to map register space\n");
                   return;
           }
   
           /* XXX These are only for setting chip configuration registers. */
           sc->sc_iobase = reg.addr;
           sc->sc_irq = intr.irq;
   
           sc->sc_drq8 = DRQUNK;
           sc->sc_drq16 = DRQUNK;
   
           for (n = 0; n < ndrq; n++) {
                   /* XXX check mode? */
                   switch (dma[n].width) {
                   case 8:
                           if (sc->sc_drq8 == DRQUNK)
                                   sc->sc_drq8 = dma[n].drq;
                           break;
                   case 16:
                           if (sc->sc_drq16 == DRQUNK)
                                   sc->sc_drq16 = dma[n].drq;
                           break;
                   default:
                           printf(": weird DMA width %d\n", dma[n].width);
                           return;
                   }
           }
   
           if (sc->sc_drq8 == DRQUNK) {
                   printf(": no 8-bit DMA channel\n");
                   return;
           }
   
           if (sbmatch(sc) == 0) {
                   printf(": sbmatch failed\n");
                   return;
           }
   
           sc->sc_ih = isa_intr_establish(aa->ic, intr.irq, IST_EDGE, IPL_AUDIO,
               sbdsp_intr, sc);
   
           n = OF_getproplen(aa->oba.oba_phandle, "model");
           if (n > 0) {
                   model = alloca(n);
                   if (OF_getprop(aa->oba.oba_phandle, "model", model, n) == n)
                           printf(": %s\n%s", model, sc->sc_dev.dv_xname);
           }
   
           sbattach(sc);
   }

Cache object: 1c860b0a67087b7fa2da8c45e24f64be