/*      $NetBSD: autoconf.c,v 1.80 2012/10/13 06:51:22 tsutsui Exp $    */

/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department and Ralph Campbell.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 * from: Utah Hdr: autoconf.c 1.31 91/01/21
 *
 *      @(#)autoconf.c  8.1 (Berkeley) 6/10/93
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.80 2012/10/13 06:51:22 tsutsui Exp $");

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

#include <pmax/autoconf.h>
#include <pmax/sysconf.h>

#include <pmax/pmax/pmaxtype.h>

#include <dev/tc/tcvar.h>

#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>

#include "opt_dec_3100.h"
#include "opt_dec_5100.h"

struct intrhand         intrtab[MAX_DEV_NCOOKIES];
static device_t         booted_controller;
static int              booted_slot, booted_unit;
static const char       *booted_protocol;

/*
 * Configure all devices on system
 */     
void
cpu_configure(void)
{

        /* Kick off autoconfiguration. */
        (void)splhigh();

        /* Interrupt initialization. */
        intr_init();

        if (config_rootfound("mainbus", NULL) == NULL)
                panic("no mainbus found");

        /* Reset any bus errors due to probing nonexistent devices. */
        (*platform.bus_reset)();

        /* Configuration is finished, turn on interrupts. */
        spl0(); /* enable all source forcing SOFT_INTs cleared */
}

/*
 * Look at the string 'cp' and decode the boot device.  Boot names
 * can be something like 'rz(0,0,0)vmunix' or '5/rz0/vmunix'.
 *
 * 2100/3100/5100 allows abbrivation;
 *      dev(controller[,uni-number[,partition-number]]])[filename]
 */
void
makebootdev(char *cp)
{
        booted_device = NULL;
        booted_slot = booted_unit = booted_partition = 0;
        booted_protocol = NULL;

#if defined(DEC_3100) || defined(DEC_5100)
        if (cp[0] == 'r' && cp[1] == 'z' && cp[2] == '(') {
                cp += 3;
                if (*cp >= '0' && *cp <= '9')
                        booted_slot = *cp++ - '0';
                if (*cp == ',')
                        cp += 1;
                if (*cp >= '0' && *cp <= '9')
                        booted_unit = *cp++ - '0';
                if (*cp == ',')
                        cp += 1;
                if (*cp >= '0' && *cp <= '9')
                        booted_partition = *cp - '0';
                booted_protocol = "SCSI";
                return;
        }
        if (strncmp(cp, "tftp(", 5) == 0) {
                booted_protocol = "BOOTP";
                return;
        }
        if (strncmp(cp, "mop(", 4) == 0) {
                booted_protocol = "MOP";
                return;
        }
#endif

        if (cp[0] >= '0' && cp[0] <= '9' && cp[1] == '/') {
                booted_slot = cp[0] - '0';
                if (cp[2] == 'r' && cp[3] == 'z'
                    && cp[4] >= '0' && cp[4] <= '9') {
                        booted_protocol = "SCSI";
                        booted_unit = cp[4] - '0';
                }
                else if (strncmp(cp+2, "tftp", 4) == 0)
                        booted_protocol = "BOOTP";
                else if (strncmp(cp+2, "mop", 3) == 0)
                        booted_protocol = "MOP";
        }
}

void
cpu_rootconf(void)
{

        printf("boot device: %s\n",
            booted_device ? device_xname(booted_device) : "<unknown>");

        rootconf();
}

/*
 * Try to determine the boot device.
 */
void
device_register(device_t dev, void *aux)
{
        static int found, initted, scsiboot, netboot;
        static device_t ioasicdev;
        device_t parent = device_parent(dev);

        if (found)
                return;

        if (!initted) {
                scsiboot = strcmp(booted_protocol, "SCSI") == 0;
                netboot = (strcmp(booted_protocol, "BOOTP") == 0) ||
                    (strcmp(booted_protocol, "MOP") == 0);
                initted = 1;
        }

        /*
         * Check if IOASIC was the boot slot.
         */
        if (device_is_a(dev, "ioasic")) {
                struct tc_attach_args *ta = aux;

                if (ta->ta_slot == booted_slot)
                        ioasicdev = dev;
                return;
        }

        /*
         * Check for ASC controller on either IOASIC or TC option card.
         */
        if (scsiboot && device_is_a(dev, "asc")) {
                struct tc_attach_args *ta = aux;

                /*
                 * If boot was from IOASIC controller, ioasicdev will
                 * be the ASC parent.
                 * If boot was from a TC option card, the TC slot number
                 * of the ASC will match the boot slot.
                 */
                if (parent == ioasicdev ||
                    ta->ta_slot == booted_slot) {
                        booted_controller = dev;
                        return;
                }
        }

        /*
         * If an SII device is configured, it's currently the only
         * possible SCSI boot device.
         */
        if (scsiboot && device_is_a(dev, "sii")) {
                booted_controller = dev;
                return;
        }

        /*
         * If we found the boot controller, if check disk/tape/cdrom device
         * on that controller matches.
         */
        if (booted_controller &&
            (device_is_a(dev, "sd") ||
             device_is_a(dev, "st") ||
             device_is_a(dev, "cd"))) {
                struct scsipibus_attach_args *sa = aux;

                if (device_parent(parent) != booted_controller)
                        return;
                if (booted_unit != sa->sa_periph->periph_target)
                        return;
                booted_device = dev;
                found = 1;
                return;
        }

        /*
         * Check if netboot device.
         */
        if (netboot) {
                struct tc_attach_args *ta = aux;

                if ((
#if defined(DEC_3100) || defined(DEC_5100)
                     /* Only one Ethernet interface on 2100/3100/5100. */
                     systype == DS_PMAX || systype == DS_MIPSMATE ||
#endif
                     /* Only one Ethernet interface at IOASIC. */
                     parent == ioasicdev)
                    && device_is_a(dev, "le")) {
                        booted_device = dev;
                        found = 1;
                        return;
                }

                /* allow any TC network adapter */
                if (device_class(dev) == DV_IFNET &&
                    device_is_a(parent, "tc") &&
                    ta->ta_slot == booted_slot) {
                        booted_device = dev;
                        found = 1;
                        return;
                }
        }
}