/* $OpenBSD: dec_kn300.c,v 1.11 2025/06/29 15:55:21 miod Exp $ */
/* $NetBSD: dec_kn300.c,v 1.34 2007/03/04 15:18:10 yamt Exp $ */

/*
 * Copyright (c) 1998 by Matthew Jacob
 * NASA AMES Research Center.
 * 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. 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. 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.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/termios.h>
#include <sys/conf.h>
#include <dev/cons.h>

#include <machine/rpb.h>
#include <machine/autoconf.h>
#include <machine/frame.h>
#include <machine/cpuconf.h>

#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>

#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/ic/i8042reg.h>
#include <dev/ic/pckbcvar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>

#include <alpha/mcbus/mcbusreg.h>
#include <alpha/mcbus/mcbusvar.h>
#include <alpha/pci/mcpciareg.h>
#include <alpha/pci/mcpciavar.h>
#include <alpha/pci/pci_kn300.h>

#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>

#include "pckbd.h"

#ifndef CONSPEED
#define CONSPEED        TTYDEF_SPEED
#endif
static int comcnrate = CONSPEED;

#ifdef DEBUG
int bootdev_debug;
#define DPRINTF(x)      do { if (bootdev_debug) printf x; } while (0)
#else
#define DPRINTF(x)      do { } while (0)
#endif

void dec_kn300_init (void);
void dec_kn300_cons_init (void);
static void dec_kn300_device_register (struct device *, void *);

#define ALPHASERVER_4100        "AlphaServer 4100"

const struct alpha_variation_table dec_kn300_variations[] = {
        { 0, ALPHASERVER_4100 },
        { 0, NULL },
};

void
dec_kn300_init(void)
{
        u_int64_t variation;
        int cachesize;

        platform.family = ALPHASERVER_4100;

        if ((platform.model = alpha_dsr_sysname()) == NULL) {
                variation = hwrpb->rpb_variation & SV_ST_MASK;
                if ((platform.model = alpha_variation_name(variation,
                    dec_kn300_variations)) == NULL)
                        platform.model = alpha_unknown_sysname();
        }

        platform.iobus = "mcbus";
        platform.cons_init = dec_kn300_cons_init;
        platform.device_register = dec_kn300_device_register;

        /*
         * Determine B-cache size by looking at the primary (console)
         * MCPCIA's WHOAMI register.
         */
        mcpcia_init();

        if (mcbus_primary.mcbus_valid) {
                switch (mcbus_primary.mcbus_bcache) {
                default:
                case CPU_BCache_0MB:
                        /* No B-cache or invalid; default to 1MB. */
                        /* FALLTHROUGH */

                case CPU_BCache_1MB:
                        cachesize = (1 * 1024 * 1024);
                        break;

                case CPU_BCache_2MB:
                        cachesize = (2 * 1024 * 1024);
                        break;

                case CPU_BCache_4MB:
                        cachesize = (4 * 1024 * 1024);
                        break;
                }
        } else {
                /* Default to 1MB. */
                cachesize = (1 * 1024 * 1024);
        }
}

void
dec_kn300_cons_init(void)
{
        struct ctb *ctb;
        struct mcpcia_config *ccp;
        extern struct mcpcia_config mcpcia_console_configuration;

        ccp = &mcpcia_console_configuration;
        /* It's already initialized. */

        ctb = (struct ctb *)(((char *)hwrpb) + hwrpb->rpb_ctb_off);

        switch (ctb->ctb_term_type) {
        case CTB_PRINTERPORT:
                /* serial console ... */
                /*
                 * Delay to allow PROM putchars to complete.
                 * FIFO depth * character time,
                 * character time = (1000000 / (defaultrate / 10))
                 */
                DELAY(160000000 / comcnrate);
                if (comcnattach(&ccp->cc_iot, 0x3f8, comcnrate,
                    COM_FREQ,
                    (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8)) {
                        panic("can't init serial console");

                }
                break;

        case CTB_GRAPHICS:
#if NPCKBD > 0
                /* display console ... */
                /* XXX */
                (void) pckbc_cnattach(&ccp->cc_iot, IO_KBD, KBCMDP, 0);

                if (CTB_TURBOSLOT_TYPE(ctb->ctb_turboslot) ==
                    CTB_TURBOSLOT_TYPE_ISA)
                        isa_display_console(&ccp->cc_iot, &ccp->cc_memt);
                else
                        pci_display_console(&ccp->cc_iot, &ccp->cc_memt,
                            &ccp->cc_pc, CTB_TURBOSLOT_BUS(ctb->ctb_turboslot),
                            CTB_TURBOSLOT_SLOT(ctb->ctb_turboslot), 0);
#else
                panic("not configured to use display && keyboard console");
#endif
                break;

        default:
                printf("ctb->ctb_term_type = 0x%lx\n",
                    (unsigned long)ctb->ctb_term_type);
                printf("ctb->ctb_turboslot = 0x%lx\n",
                    (unsigned long)ctb->ctb_turboslot);

                panic("consinit: unknown console type %lu",
                    (unsigned long)ctb->ctb_term_type);
        }
}

static void
dec_kn300_device_register(struct device *dev, void *aux)
{
        static int found, initted, diskboot, netboot;
        static struct device *primarydev, *pcidev, *ctrlrdev;
        struct bootdev_data *b = bootdev_data;
        struct device *parent = dev->dv_parent;
        struct cfdata *cf = dev->dv_cfdata;
        struct cfdriver *cd = cf->cf_driver;

        if (found)
                return;

        if (!initted) {
                diskboot = (strncasecmp(b->protocol, "SCSI", 4) == 0);
                netboot = (strncasecmp(b->protocol, "BOOTP", 5) == 0) ||
                    (strncasecmp(b->protocol, "MOP", 3) == 0);

                DPRINTF(("proto:%s bus:%d slot:%d chan:%d", b->protocol,
                    b->bus, b->slot, b->channel));
                if (b->remote_address)
                        DPRINTF((" remote_addr:%s", b->remote_address));
                DPRINTF((" un:%d bdt:%d", b->unit, b->boot_dev_type));
                if (b->ctrl_dev_type)
                        DPRINTF((" cdt:%s\n", b->ctrl_dev_type));
                else
                        DPRINTF(("\n"));
                DPRINTF(("diskboot = %d, netboot = %d\n", diskboot, netboot));
                initted = 1;
        }

        if (primarydev == NULL) {
                if (strcmp(cd->cd_name, "mcpcia"))
                        return;
                else {
                        struct mcbus_dev_attach_args *ma = aux;

                        if (b->bus != ma->ma_mid - 4)
                                return;
                        primarydev = dev;
                        DPRINTF(("\nprimarydev = %s\n", dev->dv_xname));
                        return;
                }
        }

        if (pcidev == NULL) {
                if (strcmp(cd->cd_name, "pci"))
                        return;
                /*
                 * Try to find primarydev anywhere in the ancestry.  This is
                 * necessary if the PCI bus is hidden behind a bridge.
                 */
                else {
                        struct pcibus_attach_args *pba = aux;

                        if ((b->slot / 1000) != pba->pba_bus)
                                return;
        
                        pcidev = dev;
                        DPRINTF(("\npcidev = %s\n", dev->dv_xname));
                        return;
                }
        }

        if (ctrlrdev == NULL) {
                if (parent != pcidev)
                        return;
                else {
                        struct pci_attach_args *pa = aux;
                        int slot;

                        slot = pa->pa_bus * 1000 + pa->pa_function * 100 +
                            pa->pa_device;
                        if (b->slot != slot)
                                return;
        
                        if (netboot) {
                                booted_device = dev;
                                DPRINTF(("\nbooted_device = %s\n", dev->dv_xname));
                                found = 1;
                        } else {
                                ctrlrdev = dev;
                                DPRINTF(("\nctrlrdev = %s\n", dev->dv_xname));
                        }
                        return;
                }
        }

        if (!diskboot)
                return;

        if (strcmp(cd->cd_name, "sd") ||
            strcmp(cd->cd_name, "st") ||
            strcmp(cd->cd_name, "cd")) {
                struct scsi_attach_args *sa = aux;
                struct scsi_link *periph = sa->sa_sc_link;
                int unit;

                if (parent->dv_parent != ctrlrdev)
                        return;

                unit = periph->target * 100 + periph->lun;
                if (b->unit != unit)
                        return;

                /* we've found it! */
                booted_device = dev;
                DPRINTF(("\nbooted_device = %s\n", dev->dv_xname));
                found = 1;
        }
}