/*      $OpenBSD: asp.c,v 1.16 2025/06/28 13:24:21 miod Exp $   */

/*
 * Copyright (c) 1998-2003 Michael Shalayeff
 * 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.
 *
 * 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 OR HIS RELATIVES 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 MIND, 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.
 */

/*
 * References:
 *
 * 1. Cobra/Coral I/O Subsystem External Reference Specification
 *    Hewlett-Packard
 *
 */

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

#include <machine/bus.h>
#include <machine/iomod.h>
#include <machine/autoconf.h>
#include <machine/cpufunc.h>

#include <hppa/dev/cpudevs.h>

#include <hppa/gsc/gscbusvar.h>

struct asp_hwr {
        u_int8_t asp_reset;
        u_int8_t asp_resv[31];
        u_int8_t asp_version;
        u_int8_t asp_resv1[15];
        u_int8_t asp_scsidsync;
        u_int8_t asp_resv2[15];
        u_int8_t asp_error;
};

struct asp_trs {
        struct gscbus_ic asp_ic;
        u_int8_t  asp_cled;
        u_int8_t  asp_resv[3];
        struct {
                u_int           :20,
                        asp_spu : 3,    /* SPU ID board jumper */
#define ASP_SPUCOBRA    0
#define ASP_SPUCORAL    1
#define ASP_SPUBUSH     2
#define ASP_SPUHARDBALL 3
#define ASP_SPUSCORPIO  4
#define ASP_SPUCORAL2   5
                        asp_sw  : 1,    /* front switch is normal */
                        asp_clk : 1,    /* SCSI clock is doubled */
                        asp_lan : 2,    /* LAN iface selector */
#define ASP_LANINVAL    0
#define ASP_LANAUI      1
#define ASP_LANTHIN     2
#define ASP_LANMISS     3
                        asp_lanf: 1,    /* LAN AUI fuse is ok */
                        asp_spwr: 1,    /* SCSI power ok */
                        asp_scsi: 3;    /* SCSI ctrl ID */
        } _asp_ios;
#define asp_spu         _asp_ios.asp_spu
#define asp_sw          _asp_ios.asp_sw
#define asp_clk         _asp_ios.asp_clk
#define asp_lan         _asp_ios.asp_lan
#define asp_lanf        _asp_ios.asp_lanf
#define asp_spwr        _asp_ios.asp_spwr
#define asp_scsi        _asp_ios.asp_scsi
};

const struct asp_spus_tag {
        char    name[12];
        int     ledword;
} asp_spus[] = {
        { "Cobra", 0 },
        { "Coral", 0 },
        { "Bushmaster", 0 },
        { "Hardball", 1 },
        { "Scorpio", 0 },
        { "Coral II", 1 },
        { "#6", 0 },
        { "#7", 0 }
};

#define ASP_IOMASK      0xfe000000
/* ASP "Primary Controller" HPA */
#define ASP_CHPA        0xF0800000

int     aspmatch(struct device *, void *, void *);
void    aspattach(struct device *, struct device *, void *);

const struct cfattach asp_ca = {
        sizeof(struct device), aspmatch, aspattach
};

struct cfdriver asp_cd = {
        NULL, "asp", DV_DULL
};

int
aspmatch(struct device *parent, void *cfdata, void *aux)
{
        struct confargs *ca = aux;
        /* struct cfdata *cf = cfdata; */

        if (ca->ca_type.iodc_type != HPPA_TYPE_BHA ||
            ca->ca_type.iodc_sv_model != HPPA_BHA_ASP)
                return 0;

        return 1;
}

void
aspattach(struct device *parent, struct device *self, void *aux)
{
        struct confargs *ca = aux;
        volatile struct asp_trs *trs;
        volatile struct asp_hwr *hw;
        struct gscbus_ic *ic;
        struct gsc_attach_args ga;
        bus_space_handle_t ioh;
        int s;

        if (bus_space_map(ca->ca_iot, ca->ca_hpa, IOMOD_HPASIZE, 0, &ioh)) {
                printf(": can't map IO space\n");
                return;
        }

        hw = (struct asp_hwr *)ca->ca_hpa;
        trs = (struct asp_trs *)ASP_CHPA;
        ic = (struct gscbus_ic *)&trs->asp_ic;

#ifdef USELEDS
        machine_ledaddr = &trs->asp_cled;
        machine_ledword = asp_spus[trs->asp_spu].ledword;
#endif

        /* reset ASP */
        /* hw->asp_reset = 1; */
        /* delay(400000); */

        s = splhigh();
        ic->imr = ~0;
        (void)ic->irr;
        ic->imr = 0;
        splx(s);

        printf (": %s rev %d, lan %d scsi %d\n",
            asp_spus[trs->asp_spu].name, hw->asp_version,
            trs->asp_lan, trs->asp_scsi);

        ga.ga_ca = *ca; /* clone from us */
        ga.ga_dp.dp_bc[0] = ga.ga_dp.dp_bc[1];
        ga.ga_dp.dp_bc[1] = ga.ga_dp.dp_bc[2];
        ga.ga_dp.dp_bc[2] = ga.ga_dp.dp_bc[3];
        ga.ga_dp.dp_bc[3] = ga.ga_dp.dp_bc[4];
        ga.ga_dp.dp_bc[4] = ga.ga_dp.dp_bc[5];
        ga.ga_dp.dp_bc[5] = ga.ga_dp.dp_mod;
        ga.ga_dp.dp_mod = 0;
        ga.ga_hpamask = ASP_IOMASK;
        ga.ga_name = "gsc";
        ga.ga_parent = gsc_asp;
        ga.ga_ic = ic;
        config_found(self, &ga, gscprint);
}