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sb_isa.c revision 1.20 
      1 /*	$NetBSD: sb_isa.c,v 1.20 1999/02/19 16:10:44 mycroft 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/midi_if.h>
     50 #include <dev/mulaw.h>
     51 
     52 #include <dev/isa/isavar.h>
     53 #include <dev/isa/isadmavar.h>
     54 
     55 #include <dev/isa/sbreg.h>
     56 #include <dev/isa/sbvar.h>
     57 
     58 #include <dev/isa/sbdspvar.h>
     59 
     60 static	int sbfind __P((struct device *, struct sbdsp_softc *, struct isa_attach_args *));
     61 
     62 int	sb_isa_match __P((struct device *, struct cfdata *, void *));
     63 void	sb_isa_attach __P((struct device *, struct device *, void *));
     64 
     65 struct cfattach sb_isa_ca = {
     66 	sizeof(struct sbdsp_softc), sb_isa_match, sb_isa_attach
     67 };
     68 
     69 /*
     70  * Probe / attach routines.
     71  */
     72 
     73 /*
     74  * Probe for the soundblaster hardware.
     75  */
     76 int
     77 sb_isa_match(parent, match, aux)
     78 	struct device *parent;
     79 	struct cfdata *match;
     80 	void *aux;
     81 {
     82 	struct sbdsp_softc probesc, *sc = &probesc;
     83 
     84 	bzero(sc, sizeof *sc);
     85 	sc->sc_dev.dv_cfdata = match;
     86 	strcpy(sc->sc_dev.dv_xname, "sb");
     87 	return sbfind(parent, sc, aux);
     88 }
     89 
     90 static int
     91 sbfind(parent, sc, ia)
     92 	struct device *parent;
     93 	struct sbdsp_softc *sc;
     94 	struct isa_attach_args *ia;
     95 {
     96 	int rc = 0;
     97 
     98 	if (!SB_BASE_VALID(ia->ia_iobase)) {
     99 		printf("sb: configured iobase 0x%x invalid\n", ia->ia_iobase);
    100 		return 0;
    101 	}
    102 
    103 	sc->sc_ic = ia->ia_ic;
    104 
    105 	sc->sc_iot = ia->ia_iot;
    106 	/* Map i/o space [we map 24 ports which is the max of the sb and pro */
    107 	if (bus_space_map(sc->sc_iot, ia->ia_iobase, SBP_NPORT, 0,
    108 	    &sc->sc_ioh)) {
    109 		printf("sb: can't map i/o space 0x%x/%d in probe\n",
    110 		    ia->ia_iobase, SBP_NPORT);
    111 		return 0;
    112 	}
    113 
    114 	/* XXX These are only for setting chip configuration registers. */
    115 	sc->sc_iobase = ia->ia_iobase;
    116 	sc->sc_irq = ia->ia_irq;
    117 
    118 	sc->sc_drq8 = ia->ia_drq;
    119 	sc->sc_drq16 = ia->ia_drq2;
    120 
    121 	if (!sbmatch(sc))
    122 		goto bad;
    123 
    124 	if ((sc->sc_drq8 != -1 && !isa_drq_isfree(sc->sc_ic, sc->sc_drq8)) ||
    125 	    (sc->sc_drq16 != -1 && !isa_drq_isfree(sc->sc_ic, sc->sc_drq16)))
    126 		goto bad;
    127 
    128 	if (ISSBPROCLASS(sc))
    129 		ia->ia_iosize = SBP_NPORT;
    130 	else
    131 		ia->ia_iosize = SB_NPORT;
    132 
    133 	if (!ISSB16CLASS(sc) && sc->sc_model != SB_JAZZ)
    134 		ia->ia_drq2 = -1;
    135 
    136 	ia->ia_irq = sc->sc_irq;
    137 
    138 	rc = 1;
    139 
    140 bad:
    141 	bus_space_unmap(sc->sc_iot, sc->sc_ioh, SBP_NPORT);
    142 	return rc;
    143 }
    144 
    145 
    146 /*
    147  * Attach hardware to driver, attach hardware driver to audio
    148  * pseudo-device driver .
    149  */
    150 void
    151 sb_isa_attach(parent, self, aux)
    152 	struct device *parent, *self;
    153 	void *aux;
    154 {
    155 	struct sbdsp_softc *sc = (struct sbdsp_softc *)self;
    156 	struct isa_attach_args *ia = aux;
    157 
    158 	if (!sbfind(parent, sc, ia) ||
    159 	    bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize,
    160 			  0, &sc->sc_ioh)) {
    161 		printf("%s: sbfind failed\n", sc->sc_dev.dv_xname);
    162 		return;
    163 	}
    164 
    165 	sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
    166 	    IPL_AUDIO, sbdsp_intr, sc);
    167 
    168 	sbattach(sc);
    169 }
    170