/*      $NetBSD: aha_isapnp.c,v 1.20 2016/07/14 10:19:06 msaitoh Exp $  */

/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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: aha_isapnp.c,v 1.20 2016/07/14 10:19:06 msaitoh Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/device.h>

#include <sys/bus.h>

#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>

#include <dev/isa/isavar.h>

#include <dev/isapnp/isapnpreg.h>
#include <dev/isapnp/isapnpvar.h>
#include <dev/isapnp/isapnpdevs.h>


#include <dev/ic/ahareg.h>
#include <dev/ic/ahavar.h>

static int      aha_isapnp_probe(device_t, cfdata_t, void *);
static void     aha_isapnp_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(aha_isapnp, sizeof(struct aha_softc),
   aha_isapnp_probe, aha_isapnp_attach, NULL, NULL);

int
aha_isapnp_probe(device_t parent, cfdata_t match, void *aux)
{
       int pri, variant;

       pri = isapnp_devmatch(aux, &isapnp_aha_devinfo, &variant);
       if (pri && variant > 0)
               pri = 0;
       return (pri);
}

void
aha_isapnp_attach(device_t parent, device_t self, void *aux)
{
       struct aha_softc *sc = device_private(self);
       struct aha_probe_data apd;
       struct isapnp_attach_args *ipa = aux;

       sc->sc_dev = self;

       printf("\n");

       if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
               aprint_error_dev(self, "error in region allocation\n");
               return;
       }

       sc->sc_iot = ipa->ipa_iot;
       sc->sc_ioh = ipa->ipa_io[0].h;
       sc->sc_dmat = ipa->ipa_dmat;

       if (!aha_find(sc->sc_iot, sc->sc_ioh, &apd)) {
               aprint_error_dev(self, "aha_find failed\n");
               return;
       }

       if (ipa->ipa_ndrq == 0) {
               if (apd.sc_drq != -1) {
                       aprint_error_dev(self,
                           "no PnP drq, but card has one\n");
                       return;
               }
       } else if (apd.sc_drq != ipa->ipa_drq[0].num) {
               aprint_error_dev(self, "card drq # (%d) != PnP # (%d)\n",
                   apd.sc_drq, ipa->ipa_drq[0].num);
               return;
       } else {
               int error = isa_dmacascade(ipa->ipa_ic, ipa->ipa_drq[0].num);
               if (error) {
                       aprint_error_dev(self,
                           "unable to cascade DRQ, error = %d\n", error);
                       return;
               }
       }

       if (apd.sc_irq != ipa->ipa_irq[0].num) {
               aprint_error_dev(self, "card irq # (%d) != PnP # (%d)\n",
                   apd.sc_irq, ipa->ipa_irq[0].num);
               return;
       }


       sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
           ipa->ipa_irq[0].type, IPL_BIO, aha_intr, sc);

       if (sc->sc_ih == NULL) {
               aprint_error_dev(self, "couldn't establish interrupt\n");
               return;
       }

       aha_attach(sc, &apd);
}