/*      $NetBSD: adv_isa.c,v 1.21 2016/07/07 06:55:41 msaitoh Exp $     */

/*
* Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved.
*
* Author: Baldassare Dante Profeta <[email protected]>
*
* 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.
*/
/*
* Device probe and attach routines for the following
* Advanced Systems Inc. SCSI controllers:
*
*    Connectivity Products:
*      ABP510/5150 - Bus-Master ISA (240 CDB) (Footnote 1)
*      ABP5140 - Bus-Master ISA (16 CDB) (Footnote 1) (Footnote 2)
*      ABP5142 - Bus-Master ISA with floppy (16 CDB) (Footnote 3)
*
*   Single Channel Products:
*      ABP542 - Bus-Master ISA with floppy (240 CDB)
*      ABP842 - Bus-Master VL (240 CDB)
*
*   Dual Channel Products:
*      ABP852 - Dual Channel Bus-Master VL (240 CDB Per Channel)
*
*   Footnotes:
*     1. This board has been shipped by HP with the 4020i CD-R drive.
*        The board has no BIOS so it cannot control a boot device, but
*        it can control any secondary SCSI device.
*     2. This board has been sold by SIIG as the i540 SpeedMaster.
*     3. This board has been sold by SIIG as the i542 SpeedMaster.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: adv_isa.c,v 1.21 2016/07/07 06:55:41 msaitoh 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 <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>

#include <dev/isa/isavar.h>

#include <dev/ic/advlib.h>
#include <dev/ic/adv.h>


/* Possible port addresses an ISA or VL adapter can live at */
static int asc_ioport[ASC_IOADR_TABLE_MAX_IX] =
{
       0x100,
       ASC_IOADR_1,    /* First selection in BIOS setup */
       0x120,
       ASC_IOADR_2,    /* Second selection in BIOS setup */
       0x140,
       ASC_IOADR_3,    /* Third selection in BIOS setup */
       ASC_IOADR_4,    /* Fourth selection in BIOS setup */
       ASC_IOADR_5,    /* Fifth selection in BIOS setup */
       ASC_IOADR_6,    /* Sixth selection in BIOS setup */
       ASC_IOADR_7,    /* Seventh selection in BIOS setup */
       ASC_IOADR_8     /* Eighth and default selection in BIOS setup */
};

/******************************************************************************/

int     adv_isa_probe(device_t, cfdata_t, void *);
void    adv_isa_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(adv_isa, sizeof(ASC_SOFTC),
   adv_isa_probe, adv_isa_attach, NULL, NULL);

/******************************************************************************/

int
adv_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 port_index;
       int iobase, irq, drq;
       int rv = 0;

       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);

       /*
        * If the I/O address is wildcarded, look for boards
        * in ascending order.
        */
       if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) {
               for (port_index = 0; port_index < ASC_IOADR_TABLE_MAX_IX;
                    port_index++) {
                       iobase = asc_ioport[port_index];

                       if (iobase) {
                               if (bus_space_map(iot, iobase, ASC_IOADR_GAP,
                                   0, &ioh))
                                       continue;

                               rv = AscFindSignature(iot, ioh);

                               if (rv) {
                                       ia->ia_io[0].ir_addr = iobase;
                                       break;
                               }

                               bus_space_unmap(iot, ioh, ASC_IOADR_GAP);
                       }
               }
               if (rv == 0)
                       return (0);
       } else {
               iobase = ia->ia_io[0].ir_addr;
               if (bus_space_map(iot, iobase, ASC_IOADR_GAP, 0, &ioh))
                       return (0);

               rv = AscFindSignature(iot, ioh);

               if (rv == 0) {
                       bus_space_unmap(iot, ioh, ASC_IOADR_GAP);
                       return (0);
               }
       }

       /* XXXJRT Probe routines should not have side-effects!! */
       ASC_SET_CHIP_CONTROL(iot, ioh, ASC_CC_HALT);
       ASC_SET_CHIP_STATUS(iot, ioh, 0);

       irq = AscGetChipIRQ(iot, ioh, ASC_IS_ISA);
       drq = AscGetIsaDmaChannel(iot, ioh);

       /* Verify that the IRQ/DRQ match (or are wildcarded). */
       if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ &&
           ia->ia_irq[0].ir_irq != irq) {
               rv = 0;
               goto out;
       }
       if (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ &&
           ia->ia_drq[0].ir_drq != drq) {
               rv = 0;
               goto out;
       }

       ia->ia_nio = 1;
       ia->ia_io[0].ir_addr = iobase;
       ia->ia_io[0].ir_size = ASC_IOADR_GAP;

       ia->ia_nirq = 1;
       ia->ia_irq[0].ir_irq = irq;

       ia->ia_ndrq = 1;
       ia->ia_drq[0].ir_drq = drq;

       ia->ia_niomem = 0;

out:
       bus_space_unmap(iot, ioh, ASC_IOADR_GAP);
       return rv;
}


void
adv_isa_attach(device_t parent, device_t self, void *aux)
{
       struct isa_attach_args *ia = aux;
       ASC_SOFTC *sc = device_private(self);
       bus_space_tag_t iot = ia->ia_iot;
       bus_space_handle_t ioh;
       isa_chipset_tag_t ic = ia->ia_ic;
       int error;

       printf("\n");

       sc->sc_dev = self;
       sc->sc_flags = 0x0;

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

       sc->sc_iot = iot;
       sc->sc_ioh = ioh;
       sc->sc_dmat = ia->ia_dmat;
       sc->bus_type = ASC_IS_ISA;
       sc->chip_version = ASC_GET_CHIP_VER_NO(iot, ioh);
       /*
        * Memo:
        * for EISA cards:
        * sc->chip_version = (ASC_CHIP_MIN_VER_EISA - 1) + ea->ea_pid[1];
        */

       /*
        * Initialize the board
        */
       if (adv_init(sc)) {
               aprint_error_dev(sc->sc_dev, "adv_init failed\n");
               return;
       }

       if ((error = isa_dmacascade(ic, ia->ia_drq[0].ir_drq)) != 0) {
               aprint_error_dev(sc->sc_dev,
                   "unable to cascade DRQ, error = %d\n", error);
               return;
       }

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

       adv_attach(sc);
}