166 lines
4.5 KiB
C
166 lines
4.5 KiB
C
/* $NetBSD: sb_isa.c,v 1.19 1998/08/17 21:16:15 augustss Exp $ */
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/*
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* Copyright (c) 1991-1993 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the Computer Systems
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* Engineering Group at Lawrence Berkeley Laboratory.
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* 4. Neither the name of the University nor of the Laboratory may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/syslog.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <machine/bus.h>
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#include <sys/audioio.h>
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#include <dev/audio_if.h>
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#include <dev/midi_if.h>
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#include <dev/mulaw.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <dev/isa/sbreg.h>
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#include <dev/isa/sbvar.h>
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#include <dev/isa/sbdspvar.h>
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static int sbfind __P((struct device *, struct sbdsp_softc *, struct isa_attach_args *));
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int sb_isa_match __P((struct device *, struct cfdata *, void *));
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void sb_isa_attach __P((struct device *, struct device *, void *));
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struct cfattach sb_isa_ca = {
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sizeof(struct sbdsp_softc), sb_isa_match, sb_isa_attach
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};
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/*
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* Probe / attach routines.
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*/
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/*
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* Probe for the soundblaster hardware.
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*/
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int
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sb_isa_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct sbdsp_softc probesc, *sc = &probesc;
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bzero(sc, sizeof *sc);
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sc->sc_dev.dv_cfdata = match;
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strcpy(sc->sc_dev.dv_xname, "sb");
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return sbfind(parent, sc, aux);
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}
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static int
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sbfind(parent, sc, ia)
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struct device *parent;
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struct sbdsp_softc *sc;
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struct isa_attach_args *ia;
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{
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int rc = 0;
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if (!SB_BASE_VALID(ia->ia_iobase)) {
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printf("sb: configured iobase 0x%x invalid\n", ia->ia_iobase);
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return 0;
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}
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sc->sc_iot = ia->ia_iot;
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/* Map i/o space [we map 24 ports which is the max of the sb and pro */
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if (bus_space_map(sc->sc_iot, ia->ia_iobase, SBP_NPORT, 0,
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&sc->sc_ioh)) {
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printf("sb: can't map i/o space 0x%x/%d in probe\n",
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ia->ia_iobase, SBP_NPORT);
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return 0;
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}
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sc->sc_iobase = ia->ia_iobase;
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sc->sc_irq = ia->ia_irq;
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sc->sc_ist = IST_EDGE;
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sc->sc_drq8 = ia->ia_drq;
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sc->sc_drq16 = ia->ia_drq2;
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sc->sc_ic = ia->ia_ic;
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if (!sbmatch(sc))
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goto bad;
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if ((sc->sc_drq8 != -1 && !isa_drq_isfree(sc->sc_ic, sc->sc_drq8)) ||
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(sc->sc_drq16 != -1 && !isa_drq_isfree(sc->sc_ic, sc->sc_drq16)))
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goto bad;
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if (ISSBPROCLASS(sc))
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ia->ia_iosize = SBP_NPORT;
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else
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ia->ia_iosize = SB_NPORT;
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if (!ISSB16CLASS(sc) && sc->sc_model != SB_JAZZ)
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ia->ia_drq2 = -1;
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ia->ia_irq = sc->sc_irq;
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rc = 1;
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bad:
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bus_space_unmap(sc->sc_iot, sc->sc_ioh, SBP_NPORT);
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return rc;
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}
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/*
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* Attach hardware to driver, attach hardware driver to audio
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* pseudo-device driver .
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*/
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void
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sb_isa_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct sbdsp_softc *sc = (struct sbdsp_softc *)self;
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struct isa_attach_args *ia = aux;
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if (!sbfind(parent, sc, ia) ||
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bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize,
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0, &sc->sc_ioh)) {
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printf("%s: sbfind failed\n", sc->sc_dev.dv_xname);
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return;
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}
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sc->sc_ic = ia->ia_ic;
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sbattach(sc);
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}
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