/*      $NetBSD: ahc_eisa.c,v 1.42 2021/01/27 04:35:15 thorpej Exp $    */

/*
 * Product specific probe and attach routines for:
 *      274X and aic7770 motherboard SCSI controllers
 *
 * Copyright (c) 1994, 1995, 1996, 1997, 1998 Justin T. Gibbs.
 * 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 immediately at the beginning of the file, without modification,
 *    this list of conditions, and the following disclaimer.
 * 2. 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 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 AUTHOR 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.
 *
 * $FreeBSD: src/sys/dev/aic7xxx/ahc_eisa.c,v 1.15 2000/01/29 14:22:19 peter Exp $
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ahc_eisa.c,v 1.42 2021/01/27 04:35:15 thorpej Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/reboot.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/eisa/eisareg.h>
#include <dev/eisa/eisavar.h>
#include <dev/eisa/eisadevs.h>

#include <dev/ic/aic7xxx_osm.h>
#include <dev/ic/aic7xxx_inline.h>
#include <dev/ic/aic77xxreg.h>
#include <dev/ic/aic77xxvar.h>

static int      ahc_eisa_match(device_t, cfdata_t, void *);
static void     ahc_eisa_attach(device_t, device_t, void *);


CFATTACH_DECL_NEW(ahc_eisa, sizeof(struct ahc_softc),
    ahc_eisa_match, ahc_eisa_attach, NULL, NULL);

static const struct device_compatible_entry compat_data[] = {
        { .compat = "ADP7770",  .data = EISA_PRODUCT_ADP7770 },
        { .compat = "ADP7771",  .data = EISA_PRODUCT_ADP7771 },
        DEVICE_COMPAT_EOL
};

/*
 * Check the slots looking for a board we recognise
 * If we find one, note its address (slot) and call
 * the actual probe routine to check it out.
 */
static int
ahc_eisa_match(device_t parent, cfdata_t match, void *aux)
{
        struct eisa_attach_args *ea = aux;
        bus_space_tag_t iot = ea->ea_iot;
        bus_space_handle_t ioh;
        int irq;

        if (!eisa_compatible_match(ea, compat_data))
                return (0);

        if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
            AHC_EISA_SLOT_OFFSET, AHC_EISA_IOSIZE, 0, &ioh))
                return (0);

        irq = ahc_aic77xx_irq(iot, ioh);

        bus_space_unmap(iot, ioh, AHC_EISA_IOSIZE);

        return (irq >= 0);
}

static void
ahc_eisa_attach(device_t parent, device_t self, void *aux)
{
        struct ahc_softc *ahc = device_private(self);
        struct eisa_attach_args *ea = aux;
        const struct device_compatible_entry *dce;
        eisa_chipset_tag_t ec = ea->ea_ec;
        eisa_intr_handle_t ih;
        bus_space_tag_t iot = ea->ea_iot;
        bus_space_handle_t ioh;
        int irq, intrtype;
        const char *intrstr, *intrtypestr;
        u_int biosctrl;
        u_int scsiconf;
        u_int scsiconf1;
        u_char intdef;
#ifdef AHC_DEBUG
        int i;
#endif
        char intrbuf[EISA_INTRSTR_LEN];

        ahc->sc_dev = self;

        dce = eisa_compatible_lookup(ea, compat_data);
        KASSERT(dce != NULL);

        if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
            AHC_EISA_SLOT_OFFSET, AHC_EISA_IOSIZE, 0, &ioh)) {
                aprint_error_dev(ahc->sc_dev, "could not map I/O addresses");
                return;
        }
        if ((irq = ahc_aic77xx_irq(iot, ioh)) < 0) {
                aprint_error_dev(ahc->sc_dev, "ahc_aic77xx_irq failed!");
                goto free_io;
        }

        printf(": %s\n", (const char *)dce->data);

        ahc_set_name(ahc, device_xname(ahc->sc_dev));
        ahc->parent_dmat = ea->ea_dmat;
        ahc->chip = AHC_AIC7770|AHC_EISA;
        ahc->features = AHC_AIC7770_FE;
        ahc->flags = AHC_PAGESCBS;
        ahc->bugs = AHC_TMODE_WIDEODD_BUG;
        ahc->tag = iot;
        ahc->bsh = ioh;
        ahc->channel = 'A';

        if (ahc_softc_init(ahc) != 0)
                goto free_io;

        ahc_intr_enable(ahc, FALSE);

        if (ahc_reset(ahc) != 0)
                goto free_io;

        if (eisa_intr_map(ec, irq, &ih)) {
                aprint_error_dev(ahc->sc_dev, "couldn't map interrupt (%d)\n",
                    irq);
                goto free_io;
        }

        intdef = bus_space_read_1(iot, ioh, INTDEF);

        if (intdef & EDGE_TRIG) {
                intrtype = IST_EDGE;
                intrtypestr = "edge triggered";
        } else {
                intrtype = IST_LEVEL;
                intrtypestr = "level sensitive";
        }
        intrstr = eisa_intr_string(ec, ih, intrbuf, sizeof(intrbuf));
        ahc->ih = eisa_intr_establish(ec, ih,
            intrtype, IPL_BIO, ahc_intr, ahc);
        if (ahc->ih == NULL) {
                aprint_error_dev(ahc->sc_dev,
                    "couldn't establish %s interrupt", intrtypestr);
                if (intrstr != NULL)
                        aprint_error(" at %s", intrstr);
                aprint_error("\n");
                goto free_io;
        }
        if (intrstr != NULL)
                aprint_normal_dev(ahc->sc_dev, "%s interrupting at %s\n",
                       intrtypestr, intrstr);

        /*
         * Now that we know we own the resources we need, do the
         * card initialization.
         *
         * First, the aic7770 card specific setup.
         */
        biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
        scsiconf = ahc_inb(ahc, SCSICONF);
        scsiconf1 = ahc_inb(ahc, SCSICONF + 1);

#ifdef AHC_DEBUG
        for (i = TARG_SCSIRATE; i <= HA_274_BIOSCTRL; i+=8) {
                printf("0x%x, 0x%x, 0x%x, 0x%x, "
                       "0x%x, 0x%x, 0x%x, 0x%x\n",
                       ahc_inb(ahc, i),
                       ahc_inb(ahc, i+1),
                       ahc_inb(ahc, i+2),
                       ahc_inb(ahc, i+3),
                       ahc_inb(ahc, i+4),
                       ahc_inb(ahc, i+5),
                       ahc_inb(ahc, i+6),
                       ahc_inb(ahc, i+7));
        }
#endif

        /* Get the primary channel information */
        if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
                ahc->flags |= AHC_PRIMARY_CHANNEL;

        if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
                ahc->flags |= AHC_USEDEFAULTS;
        } else if ((ahc->features & AHC_WIDE) != 0) {
                ahc->our_id = scsiconf1 & HWSCSIID;
                if (scsiconf & TERM_ENB)
                        ahc->flags |= AHC_TERM_ENB_A;
        } else {
                ahc->our_id = scsiconf & HSCSIID;
                ahc->our_id_b = scsiconf1 & HSCSIID;
                if (scsiconf & TERM_ENB)
                        ahc->flags |= AHC_TERM_ENB_A;
                if (scsiconf1 & TERM_ENB)
                        ahc->flags |= AHC_TERM_ENB_B;
        }
        if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
                ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;

        /* Attach sub-devices */
        if (ahc_aic77xx_attach(ahc) == 0)
                return; /* succeed */

        /* failed */
        eisa_intr_disestablish(ec, ahc->ih);
free_io:
        bus_space_unmap(iot, ioh, AHC_EISA_IOSIZE);
}