/*      $NetBSD: sb_isa.c,v 1.39 2019/05/08 13:40:18 isaki 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 1.39 2019/05/08 13:40:18 isaki 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 <sys/bus.h>

#include <sys/audioio.h>
#include <dev/audio/audio_if.h>
#include <dev/midi_if.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(device_t, struct sbdsp_softc *, int,
           struct isa_attach_args *, cfdata_t);

int     sb_isa_match(device_t, cfdata_t, void *);
void    sb_isa_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(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(device_t parent, cfdata_t 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);
       return sbfind(parent, sc, 1, aux, match);
}

static int
sbfind(device_t parent, struct sbdsp_softc *sc, int probing,
   struct isa_attach_args *ia, cfdata_t match)
{
       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, probing, match))
               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(device_t parent, device_t self, void *aux)
{
       struct sbdsp_softc *sc = device_private(self);
       struct isa_attach_args *ia = aux;

       sc->sc_dev = self;

       if (!sbfind(parent, sc, 0, ia, device_cfdata(self)) ||
           bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr,
           ia->ia_io[0].ir_size, 0, &sc->sc_ioh)) {
               aprint_error_dev(self, "sbfind failed\n");
               return;
       }

       mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
       mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);

       sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
           IST_EDGE, IPL_AUDIO, sbdsp_intr, sc);

       sbattach(sc);
}