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sb_isa.c revision 1.18 
      1 /*	$NetBSD: sb_isa.c,v 1.18 1998/06/29 22:42:09 thorpej 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 static	int sbfind __P((struct device *, struct sbdsp_softc *, struct isa_attach_args *));
     60 
     61 int	sb_isa_match __P((struct device *, struct cfdata *, void *));
     62 void	sb_isa_attach __P((struct device *, struct device *, void *));
     63 
     64 struct cfattach sb_isa_ca = {
     65 	sizeof(struct sbdsp_softc), sb_isa_match, sb_isa_attach
     66 };
     67 
     68 /*
     69  * Probe / attach routines.
     70  */
     71 
     72 /*
     73  * Probe for the soundblaster hardware.
     74  */
     75 int
     76 sb_isa_match(parent, match, aux)
     77 	struct device *parent;
     78 	struct cfdata *match;
     79 	void *aux;
     80 {
     81 	struct sbdsp_softc probesc, *sc = &probesc;
     82 
     83 	bzero(sc, sizeof *sc);
     84 	sc->sc_dev.dv_cfdata = match;
     85 	strcpy(sc->sc_dev.dv_xname, "sb");
     86 	return sbfind(parent, sc, aux);
     87 }
     88 
     89 static int
     90 sbfind(parent, sc, ia)
     91 	struct device *parent;
     92 	struct sbdsp_softc *sc;
     93 	struct isa_attach_args *ia;
     94 {
     95 	int rc = 0;
     96 
     97 	if (!SB_BASE_VALID(ia->ia_iobase)) {
     98 		printf("sb: configured iobase 0x%x invalid\n", ia->ia_iobase);
     99 		return 0;
    100 	}
    101 
    102 	sc->sc_iot = ia->ia_iot;
    103 
    104 	/* Map i/o space [we map 24 ports which is the max of the sb and pro */
    105 	if (bus_space_map(sc->sc_iot, ia->ia_iobase, SBP_NPORT, 0,
    106 	    &sc->sc_ioh)) {
    107 		printf("sb: can't map i/o space 0x%x/%d in probe\n",
    108 		    ia->ia_iobase, SBP_NPORT);
    109 		return 0;
    110 	}
    111 
    112 	sc->sc_iobase = ia->ia_iobase;
    113 	sc->sc_irq = ia->ia_irq;
    114 	sc->sc_ist = IST_EDGE;
    115 	sc->sc_drq8 = ia->ia_drq;
    116 	sc->sc_drq16 = ia->ia_drq2;
    117 	sc->sc_ic = ia->ia_ic;
    118 
    119 	if (!sbmatch(sc))
    120 		goto bad;
    121 
    122 	if ((sc->sc_drq8 != -1 && !isa_drq_isfree(sc->sc_ic, sc->sc_drq8)) ||
    123 	    (sc->sc_drq16 != -1 && !isa_drq_isfree(sc->sc_ic, sc->sc_drq16)))
    124 		goto bad;
    125 
    126 	if (ISSBPROCLASS(sc))
    127 		ia->ia_iosize = SBP_NPORT;
    128 	else
    129 		ia->ia_iosize = SB_NPORT;
    130 
    131 	if (!ISSB16CLASS(sc) && sc->sc_model != SB_JAZZ)
    132 		ia->ia_drq2 = -1;
    133 
    134 	ia->ia_irq = sc->sc_irq;
    135 
    136 	rc = 1;
    137 
    138 bad:
    139 	bus_space_unmap(sc->sc_iot, sc->sc_ioh, SBP_NPORT);
    140 	return rc;
    141 }
    142 
    143 
    144 /*
    145  * Attach hardware to driver, attach hardware driver to audio
    146  * pseudo-device driver .
    147  */
    148 void
    149 sb_isa_attach(parent, self, aux)
    150 	struct device *parent, *self;
    151 	void *aux;
    152 {
    153 	struct sbdsp_softc *sc = (struct sbdsp_softc *)self;
    154 	struct isa_attach_args *ia = aux;
    155 
    156 	if (!sbfind(parent, sc, ia) ||
    157 	    bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize,
    158 			  0, &sc->sc_ioh)) {
    159 		printf("%s: sbfind failed\n", sc->sc_dev.dv_xname);
    160 		return;
    161 	}
    162 	sc->sc_ic = ia->ia_ic;
    163 	sbattach(sc);
    164 }
    165