NetBSD/sys/dev/isa/sb_isa.c

187 lines
4.9 KiB
C

/* $NetBSD: sb_isa.c,v 1.32 2005/12/11 12:22:03 christos Exp $ */
/*
* Copyright (c) 1991-1993 Regents of the University of California.
* All rights reserved.
*
* 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 Computer Systems
* Engineering Group at Lawrence Berkeley Laboratory.
* 4. Neither the name of the University nor of the Laboratory may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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_isa.c,v 1.32 2005/12/11 12:22:03 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <machine/bus.h>
#include <sys/audioio.h>
#include <dev/audio_if.h>
#include <dev/midi_if.h>
#include <dev/mulaw.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>
#include <dev/isa/sbreg.h>
#include <dev/isa/sbvar.h>
#include <dev/isa/sbdspvar.h>
static int sbfind(struct device *, struct sbdsp_softc *, int,
struct isa_attach_args *);
int sb_isa_match(struct device *, struct cfdata *, void *);
void sb_isa_attach(struct device *, struct device *, void *);
CFATTACH_DECL(sb_isa, sizeof(struct sbdsp_softc),
sb_isa_match, sb_isa_attach, NULL, NULL);
/*
* Probe / attach routines.
*/
/*
* Probe for the soundblaster hardware.
*/
int
sb_isa_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct isa_attach_args *ia = aux;
struct sbdsp_softc probesc, *sc = &probesc;
if (ia->ia_nio < 1)
return (0);
if (ia->ia_nirq < 1)
return (0);
if (ia->ia_ndrq < 1)
return (0);
if (ISA_DIRECT_CONFIG(ia))
return (0);
memset(sc, 0, sizeof *sc);
strcpy(sc->sc_dev.dv_xname, "sb");
sc->sc_dev.dv_cfdata = match;
return sbfind(parent, sc, 1, aux);
}
static int
sbfind(parent, sc, probing, ia)
struct device *parent;
struct sbdsp_softc *sc;
int probing;
struct isa_attach_args *ia;
{
int rc = 0;
if (!SB_BASE_VALID(ia->ia_io[0].ir_addr)) {
printf("sb: configured iobase 0x%x invalid\n",
ia->ia_io[0].ir_addr);
return 0;
}
sc->sc_ic = ia->ia_ic;
sc->sc_iot = ia->ia_iot;
/* Map i/o space [we map 24 ports which is the max of the sb and pro */
if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, SBP_NPORT, 0,
&sc->sc_ioh))
return 0;
/* XXX These are only for setting chip configuration registers. */
sc->sc_iobase = ia->ia_io[0].ir_addr;
sc->sc_irq = ia->ia_irq[0].ir_irq;
sc->sc_drq8 = ia->ia_drq[0].ir_drq;
sc->sc_drq16 = ia->ia_drq[1].ir_drq;
if (!sbmatch(sc))
goto bad;
rc = 1;
if (probing) {
ia->ia_nio = 1;
if (ISSBPROCLASS(sc))
ia->ia_io[0].ir_size = SBP_NPORT;
else
ia->ia_io[0].ir_size = SB_NPORT;
if (!ISSB16CLASS(sc) && sc->sc_model != SB_JAZZ)
ia->ia_ndrq = 1;
else
ia->ia_ndrq = 2;
ia->ia_nirq = 1;
ia->ia_irq[0].ir_irq = sc->sc_irq;
ia->ia_niomem = 0;
}
bad:
bus_space_unmap(sc->sc_iot, sc->sc_ioh, SBP_NPORT);
return rc;
}
/*
* Attach hardware to driver, attach hardware driver to audio
* pseudo-device driver .
*/
void
sb_isa_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct sbdsp_softc *sc = (struct sbdsp_softc *)self;
struct isa_attach_args *ia = aux;
if (!sbfind(parent, sc, 0, ia) ||
bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr,
ia->ia_io[0].ir_size, 0, &sc->sc_ioh)) {
printf("%s: sbfind failed\n", sc->sc_dev.dv_xname);
return;
}
sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
IST_EDGE, IPL_AUDIO, sbdsp_intr, sc);
sbattach(sc);
}