/*      $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 <dante@mclink.it>
 *
 * 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);
}