/*      $NetBSD: devopen.c,v 1.20 2018/03/21 18:27:27 ragge Exp $ */
/*
 * Copyright (c) 1997 Ludd, University of Lule}, Sweden.
 * 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 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.
 */

#include <lib/libsa/stand.h>
#include <lib/libkern/libkern.h>

#include <machine/param.h>
#include <machine/rpb.h>
#include <machine/sid.h>
#include <machine/pte.h>
#define VAX780 1
#include <machine/ka750.h>

#include <dev/bi/bireg.h>

#include "vaxstand.h"

int nexaddr, csrbase;
static int *mapaddr;

/*
 * Boot device syntax:
 * device(adapter, controller, unit, partition)file
 */
int
devopen(struct open_file *f, const char *fname, char **file)
{
        int dev, unit, ctlr, part, adapt, i, a[4], x;
        struct devsw *dp;
        extern int cnvtab[];
        char *s, *c;

        part = 0;

        /*
         * Adaptor and controller are normally zero (or uninteresting),
         * but we need to do some conversion here anyway (if it's a
         * manual boot, but that's checked by the device driver).
         * Set them to -1 to tell if it's a set number or default.
         */
        dev = bootrpb.devtyp;
        unit = bootrpb.unit;
        adapt = ctlr = -1;

        if (dev == BDEV_KDB)
                dev = BDEV_UDA; /* use the same driver */

        for (i = 0, dp = 0; i < ndevs; i++)
                if (cnvtab[i] == dev)
                        dp = devsw + i;

        x = 0;
        if ((s = strchr((char *)fname, '('))) {
                *s++ = 0;

                for (i = 0, dp = devsw; i < ndevs; i++, dp++)
                        if (dp->dv_name && strcmp(dp->dv_name, fname) == 0)
                                break;

                if (i == ndevs) {
                        printf("No such device - Configured devices are:\n");
                        for (dp = devsw, i = 0; i < ndevs; i++, dp++)
                                if (dp->dv_name)
                                        printf(" %s", dp->dv_name);
                        printf("\n");
                        return -1;
                }
                dev = cnvtab[i];
                if ((c = strchr(s, ')')) == 0)
                        goto usage;

                *c++ = 0;

                if (*s) do {
                        a[x++] = atoi(s);
                        while (*s >= '0' && *s <= '9')
                                s++;

                        if (*s != ',' && *s != 0)
                                goto usage;
                } while (*s++);

                if (x)
                        part = a[x - 1];
                if (x > 1)
                        unit = a[x - 2];
                if (x > 2)
                        ctlr = a[x - 3];
                if (x > 3)
                        adapt = a[0];
                *file = c;
        } else {
                *file = (char *)fname;
                c = (char *)fname;
        }

        if (!dp->dv_open) {
                printf("Can't open device type %d\n", dev);
                return(ENODEV);
        }
        f->f_dev = dp;
        bootrpb.unit = unit;
        bootrpb.devtyp = dev;

        nexaddr = bootrpb.adpphy;
        switch (vax_boardtype) {
        case VAX_BTYP_750:
                csrbase = (nexaddr == 0xf30000 ? 0xffe000 : 0xfbe000);
                mapaddr = (int *)nexaddr + VAX_NBPG;
                if (adapt < 0)
                        break;
                nexaddr = (NEX750 + NEXSIZE * adapt);
                csrbase = (adapt == 8 ? 0xffe000 : 0xfbe000);
                break;
        case VAX_BTYP_780:
        case VAX_BTYP_790:
                csrbase = 0x2007e000 + 0x40000 * ((nexaddr & 0x1e000) >> 13);
                mapaddr = (int *)nexaddr + VAX_NBPG;
                if (adapt < 0)
                        break;
                nexaddr = ((int)NEX780 + NEXSIZE * adapt);
                csrbase = 0x2007e000 + 0x40000 * adapt;
                break;
        case VAX_BTYP_9CC: /* 6000/200 */
        case VAX_BTYP_9RR: /* 6000/400 */
        case VAX_BTYP_1202: /* 6000/500 */
                csrbase = 0;
                if (ctlr < 0)
                        ctlr = bootrpb.adpphy & 15;
                if (adapt < 0)
                        adapt = (bootrpb.adpphy >> 4) & 15;
                nexaddr = BI_BASE(adapt, ctlr);
                break;

        case VAX_BTYP_8000:
        case VAX_BTYP_8800:
        case VAX_BTYP_8PS:
                csrbase = 0; /* _may_ be a KDB */
                nexaddr = bootrpb.csrphy;
                if (ctlr < 0)
                        break;
                if (adapt < 0)
                        nexaddr = (nexaddr & 0xff000000) + BI_NODE(ctlr);
                else
                        nexaddr = BI_BASE(adapt, ctlr);
                break;
        case VAX_BTYP_610:
                nexaddr = 0; /* No map regs */
                csrbase = 0x20000000;
                break;

        case VAX_BTYP_VXT:
                nexaddr = 0;
                csrbase = bootrpb.csrphy;
                break;
        default:
                nexaddr = 0; /* No map regs */
                csrbase = 0x20000000;
                if (bootrpb.adpphy == 0x20087800) {
                        nexaddr = bootrpb.adpphy;
                        mapaddr = (int *)nexaddr + VAX_NBPG;
                }
                break;
        }

#ifdef DEV_DEBUG
        printf("rpb.type %d rpb.unit %d rpb.csr %lx rpb.adp %lx\n",
            bootrpb.devtyp, bootrpb.unit, bootrpb.csrphy, bootrpb.adpphy);
        printf("adapter %d ctlr %d unit %d part %d\n", adapt, ctlr, unit, part);
        printf("nexaddr %x csrbase %x\n", nexaddr, csrbase);
#endif

        return (*dp->dv_open)(f, adapt, ctlr, unit, part);

usage:
        printf("usage: dev(adapter,controller,unit,partition)file -asd\n");
        return -1;
}

/*
 * Map in virtual address vaddr of size vsize starting with map mapno.
 * Returns the unibus address of the mapped area.
 */
int
ubmap(int mapno, int vaddr, int size)
{
        int voff = (vaddr & VAX_PGOFSET);
        int rv = (mapno << VAX_PGSHIFT) + voff;
        int vpag, npag;

        if (mapaddr == 0)
                return vaddr; /* no map, phys == virt */

        npag = (voff + size) / VAX_NBPG;
        vpag = vaddr >> VAX_PGSHIFT;
        while (npag-- >= 0)
                mapaddr[mapno++] = vpag++ | PG_V;
        return rv;
}