/*      $OpenBSD: dev_i386.c,v 1.23 2019/05/10 21:20:43 mlarkin Exp $   */

/*
 * Copyright (c) 1996-1999 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.
 */

#include <sys/param.h>
#include <sys/queue.h>
#include <sys/disklabel.h>
#include <dev/cons.h>

#include "libsa.h"
#include "biosdev.h"
#include "disk.h"

#ifdef SOFTRAID
#include <dev/biovar.h>
#include <dev/softraidvar.h>
#include <lib/libsa/softraid.h>
#include "softraid_amd64.h"
#endif

extern int debug;

/* XXX use slot for 'rd' for 'hd' pseudo-device */
const char bdevs[][4] = {
        "wd", "", "fd", "", "sd", "st", "cd", "",
        "", "", "", "", "", "", "", "", "", "hd", ""
};
const int nbdevs = nitems(bdevs);

const char cdevs[][4] = {
        "cn", "", "", "", "", "", "", "",
        "com", "", "", "", "pc"
};
const int ncdevs = nitems(cdevs);

/* pass dev_t to the open routines */
int
devopen(struct open_file *f, const char *fname, char **file)
{
        struct devsw *dp = devsw;
        register int i, rc = 1;

        *file = (char *)fname;

#ifdef DEBUG
        if (debug)
                printf("devopen:");
#endif

        for (i = 0; i < ndevs && rc != 0; dp++, i++) {
#ifdef DEBUG
                if (debug)
                        printf(" %s: ", dp->dv_name);
#endif
                if ((rc = (*dp->dv_open)(f, file)) == 0) {
                        f->f_dev = dp;
                        return 0;
                }
#ifdef DEBUG
                else if (debug)
                        printf("%d", rc);
#endif

        }
#ifdef DEBUG
        if (debug)
                putchar('\n');
#endif

        if ((f->f_flags & F_NODEV) == 0)
                f->f_dev = dp;

        return rc;
}

void
devboot(dev_t bootdev, char *p)
{
#ifdef SOFTRAID
        struct sr_boot_volume *bv;
        struct sr_boot_chunk *bc;
        struct diskinfo *dip = NULL;
#endif
        int sr_boot_vol = -1;
        int part_type = FS_UNUSED;

#ifdef SOFTRAID
        /*
         * Determine the partition type for the 'a' partition of the
         * boot device.
         */
        TAILQ_FOREACH(dip, &disklist, list)
                if (dip->bios_info.bios_number == bootdev &&
                    (dip->bios_info.flags & BDI_BADLABEL) == 0)
                        part_type = dip->disklabel.d_partitions[0].p_fstype;

        /*
         * See if we booted from a disk that is a member of a bootable
         * softraid volume.
         */
        SLIST_FOREACH(bv, &sr_volumes, sbv_link) {
                if (bv->sbv_flags & BIOC_SCBOOTABLE)
                        SLIST_FOREACH(bc, &bv->sbv_chunks, sbc_link)
                                if (bc->sbc_disk == bootdev)
                                        sr_boot_vol = bv->sbv_unit;
                if (sr_boot_vol != -1)
                        break;
        }
#endif

        if (sr_boot_vol != -1 && part_type != FS_BSDFFS) {
                *p++ = 's';
                *p++ = 'r';
                *p++ = '0' + sr_boot_vol;
        } else if (bootdev & 0x100) {
                *p++ = 'c';
                *p++ = 'd';
                *p++ = '0';
        } else {
                if (bootdev & 0x80)
                        *p++ = 'h';
                else
                        *p++ = 'f';
                *p++ = 'd';
                *p++ = '0' + (bootdev & 0x7f);
        }
        *p++ = 'a';
        *p = '\0';
}

char ttyname_buf[8];

char *
ttyname(int fd)
{
        snprintf(ttyname_buf, sizeof ttyname_buf, "%s%d",
            cdevs[major(cn_tab->cn_dev)], minor(cn_tab->cn_dev));

        return ttyname_buf;
}

dev_t
ttydev(char *name)
{
        int i, unit = -1;
        char *no = name + strlen(name) - 1;

        while (no >= name && *no >= '0' && *no <= '9')
                unit = (unit < 0 ? 0 : (unit * 10)) + *no-- - '0';
        if (no < name || unit < 0)
                return NODEV;
        for (i = 0; i < ncdevs; i++)
                if (strncmp(name, cdevs[i], no - name + 1) == 0)
                        return makedev(i, unit);
        return NODEV;
}

int
cnspeed(dev_t dev, int sp)
{
        if (major(dev) == 8)    /* comN */
                return comspeed(dev, sp);

        /* pc0 and anything else */
        return 9600;
}