/*      $NetBSD: aic_isa.c,v 1.26 2009/11/23 02:13:46 rmind Exp $       */

/*
* Copyright (c) 1994, 1995, 1996 Charles M. Hannum.  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 Charles M. Hannum.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* Copyright (c) 1994 Jarle Greipsland
* 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. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/

/*
* Acknowledgements: Many of the algorithms used in this driver are
* inspired by the work of Julian Elischer ([email protected]) and
* Charles Hannum ([email protected]).  Thanks a million!
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: aic_isa.c,v 1.26 2009/11/23 02:13:46 rmind Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/device.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/queue.h>

#include <sys/bus.h>
#include <sys/intr.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/ic/aic6360reg.h>
#include <dev/ic/aic6360var.h>

static int      aic_isa_probe(device_t, cfdata_t, void *);
static void     aic_isa_attach(device_t, device_t, void *);

struct aic_isa_softc {
       struct  aic_softc sc_aic;       /* real "aic" softc */

       /* ISA-specific goo. */
       void    *sc_ih;                 /* interrupt handler */
};

CFATTACH_DECL_NEW(aic_isa, sizeof(struct aic_isa_softc),
   aic_isa_probe, aic_isa_attach, NULL, NULL);


/*
* INITIALIZATION ROUTINES (probe, attach ++)
*/

/*
* aic_isa_probe: probe for AIC6360 SCSI-controller
* returns non-zero value if a controller is found.
*/
int
aic_isa_probe(device_t parent, cfdata_t match, void *aux)
{
       struct isa_attach_args *ia = aux;
       bus_space_tag_t iot = ia->ia_iot;
       bus_space_handle_t ioh;
       int rv;

       if (ia->ia_nio < 1)
               return (0);
       if (ia->ia_nirq < 1)
               return (0);

       if (ISA_DIRECT_CONFIG(ia))
               return (0);

       /* Disallow wildcarded i/o address. */
       if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
               return (0);

       /* Disallow wildcarded IRQ. */
       if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
               return (0);

       if (bus_space_map(iot, ia->ia_io[0].ir_addr, AIC_ISA_IOSIZE, 0, &ioh))
               return (0);

       rv = aic_find(iot, ioh);

       bus_space_unmap(iot, ioh, AIC_ISA_IOSIZE);

       if (rv) {
               ia->ia_nio = 1;
               ia->ia_io[0].ir_size = AIC_ISA_IOSIZE;

               ia->ia_nirq = 1;

               ia->ia_niomem = 0;
               ia->ia_ndrq = 0;
       }
       return rv;
}

void
aic_isa_attach(device_t parent, device_t self, void *aux)
{
       struct isa_attach_args *ia = aux;
       struct aic_isa_softc *isc = device_private(self);
       struct aic_softc *sc = &isc->sc_aic;
       bus_space_tag_t iot = ia->ia_iot;
       bus_space_handle_t ioh;
       isa_chipset_tag_t ic = ia->ia_ic;

       sc->sc_dev = self;

       printf("\n");

       if (bus_space_map(iot, ia->ia_io[0].ir_addr, AIC_ISA_IOSIZE, 0, &ioh)) {
               aprint_error_dev(self, "can't map i/o space\n");
               return;
       }

       sc->sc_iot = iot;
       sc->sc_ioh = ioh;
       if (!aic_find(iot, ioh)) {
               aprint_error_dev(self, "aic_find failed\n");
               return;
       }

       isc->sc_ih = isa_intr_establish(ic, ia->ia_irq[0].ir_irq, IST_EDGE,
           IPL_BIO, aicintr, sc);
       if (isc->sc_ih == NULL) {
               aprint_error_dev(self, "couldn't establish interrupt\n");
               return;
       }

       aicattach(sc);
}

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