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sb_isa.c revision 1.9 
      1 /*	$NetBSD: sb_isa.c,v 1.9 1997/08/04 22:13:33 augustss Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1991-1993 Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the Computer Systems
     18  *	Engineering Group at Lawrence Berkeley Laboratory.
     19  * 4. Neither the name of the University nor of the Laboratory may be used
     20  *    to endorse or promote products derived from this software without
     21  *    specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  */
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/errno.h>
     40 #include <sys/ioctl.h>
     41 #include <sys/syslog.h>
     42 #include <sys/device.h>
     43 #include <sys/proc.h>
     44 
     45 #include <machine/bus.h>
     46 
     47 #include <sys/audioio.h>
     48 #include <dev/audio_if.h>
     49 #include <dev/mulaw.h>
     50 
     51 #include <dev/isa/isavar.h>
     52 #include <dev/isa/isadmavar.h>
     53 
     54 #include <dev/isa/sbreg.h>
     55 #include <dev/isa/sbvar.h>
     56 
     57 #include <dev/isa/sbdspvar.h>
     58 
     59 int	sb_isa_match __P((struct device *, void *, void *));
     60 void	sb_isa_attach __P((struct device *, struct device *, void *));
     61 
     62 struct cfattach sb_isa_ca = {
     63 	sizeof(struct sbdsp_softc), sb_isa_match, sb_isa_attach
     64 };
     65 
     66 /*
     67  * Probe / attach routines.
     68  */
     69 
     70 /*
     71  * Probe for the soundblaster hardware.
     72  */
     73 int
     74 sb_isa_match(parent, match, aux)
     75 	struct device *parent;
     76 	void *match, *aux;
     77 {
     78 	/*
     79 	 * Indirect brokedness!
     80 	 */
     81 	struct sbdsp_softc *sc = match;
     82 	struct isa_attach_args *ia = aux;
     83 
     84 	if (!SB_BASE_VALID(ia->ia_iobase)) {
     85 		printf("sb: configured iobase 0x%x invalid\n", ia->ia_iobase);
     86 		return 0;
     87 	}
     88 
     89 	sc->sc_iot = ia->ia_iot;
     90 
     91 	/* Map i/o space [we map 24 ports which is the max of the sb and pro */
     92 	if (bus_space_map(sc->sc_iot, ia->ia_iobase, SBP_NPORT, 0,
     93 	    &sc->sc_ioh)) {
     94 		printf("sb: can't map i/o space 0x%x/%d in probe\n",
     95 		    ia->ia_iobase, SBP_NPORT);
     96 		return 0;
     97 	}
     98 
     99 	/*
    100 	 * Indirect brokedness!
    101 	 */
    102 	sc->sc_iobase = ia->ia_iobase;
    103 	sc->sc_irq = ia->ia_irq;
    104 	sc->sc_drq8 = ia->ia_drq;
    105 	sc->sc_drq16 = 5;	/* XXX */
    106 	sc->sc_ic = ia->ia_ic;
    107 
    108 	if (!sbmatch(sc))
    109 		goto bad;
    110 
    111 	if ((sc->sc_drq8 != -1 && isa_drq_isfree(parent, sc->sc_drq8) == 0) ||
    112 	    (sc->sc_drq16 != -1 && isa_drq_isfree(parent, sc->sc_drq16) == 0))
    113 		goto bad;
    114 
    115 	if (ISSBPROCLASS(sc))
    116 		ia->ia_iosize = SBP_NPORT;
    117 	else
    118 		ia->ia_iosize = SB_NPORT;
    119 
    120 	ia->ia_irq = sc->sc_irq;
    121 
    122 bad:
    123 	bus_space_unmap(sc->sc_iot, sc->sc_ioh, SBP_NPORT);
    124 	return 0;
    125 }
    126 
    127 
    128 /*
    129  * Attach hardware to driver, attach hardware driver to audio
    130  * pseudo-device driver .
    131  */
    132 void
    133 sb_isa_attach(parent, self, aux)
    134 	struct device *parent, *self;
    135 	void *aux;
    136 {
    137 	struct sbdsp_softc *sc = (struct sbdsp_softc *)self;
    138 
    139 	sc->sc_isa = parent;
    140 
    141 	sbattach(sc);
    142 }
    143