usr/src/sys/vax/vax/ka650.c

/*
 * Copyright (c) 1988 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Mt. Xinu.
 *
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. 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.
 *
 *      @(#)ka650.c     7.7 (Berkeley) 12/16/90
 */

#if VAX650

/*
 * vax650-specific code.
 */

#include "sys/param.h"
#include "sys/time.h"
#include "sys/kernel.h"
#include "sys/systm.h"

#include "../include/cpu.h"
#include "../include/clock.h"
#include "../include/psl.h"
#include "mem.h"
#include "../include/mtpr.h"
#include "ka650.h"


ka650_init()
{
        ioaccess(KA650_MERR, KA650MERRmap, sizeof(ka650merr));
        ioaccess(KA650_CBD, KA650CBDmap, sizeof(ka650cbd));
        ioaccess(KA650_SSC, KA650SSCmap, sizeof(ka650ssc));
        ioaccess(KA650_IPCR, KA650IPCRmap, sizeof(ka650ipcr));
        ioaccess(KA650_CACHE, KA650CACHEmap, KA650_CACHESIZE);
        ka650encache();
        if (ctob(physmem) > ka650merr.merr_qbmbr) {
                printf("physmem(0x%x) > qbmbr(0x%x)\n",
                    ctob(physmem), ka650merr.merr_qbmbr);
                panic("qbus map unprotected");
        }
}

ka650_clkstartrt()
{
        mtpr(ICCS, ICCS_IE);
}

ka650_memnop()
{
        /* void */
}

ka650_memerr()
{
        register char *cp = (char *)0;
        register int m;
        extern u_int cache2tag;

        if (ka650cbd.cbd_cacr & CACR_CPE) {
                printf("cache 2 tag parity error: ");
                if (time.tv_sec - cache2tag < 7) {
                        ka650discache();
                        printf("cacheing disabled\n");
                } else {
                        cache2tag = time.tv_sec;
                        printf("flushing cache\n");
                        ka650encache();
                }
        }
        m = ka650merr.merr_errstat;
        ka650merr.merr_errstat = MEM_EMASK;
        if (m & MEM_CDAL) {
                cp = "Bus Parity";
        } else if (m & MEM_RDS) {
                cp = "Hard ECC";
        } else if (m & MEM_CRD) {
                cp = "Soft ECC";
        }
        if (cp) {
                printf("%sMemory %s Error: page 0x%x\n",
                        (m & MEM_DMA) ? "DMA " : "", cp,
                        (m & MEM_PAGE) >> MEM_PAGESHFT);
        }
}

#define NMC650  15
char *mc650[] = {
        0,                      "FPA proto err",        "FPA resv inst",
        "FPA Ill Stat 2",       "FPA Ill Stat 1",       "PTE in P0, TB miss",
        "PTE in P1, TB miss",   "PTE in P0, Mod",       "PTE in P1, Mod",
        "Illegal intr IPL",     "MOVC state error",     "bus read error",
        "SCB read error",       "bus write error",      "PCB write error"
};
u_int   cache1tag;
u_int   cache1data;
u_int   cdalerr;
u_int   cache2tag;

struct mc650frame {
        int     mc65_bcnt;              /* byte count == 0xc */
        int     mc65_summary;           /* summary parameter */
        int     mc65_mrvaddr;           /* most recent vad */
        int     mc65_istate1;           /* internal state */
        int     mc65_istate2;           /* internal state */
        int     mc65_pc;                /* trapped pc */
        int     mc65_psl;               /* trapped psl */
};

ka650_mchk(cmcf)
        caddr_t cmcf;
{
        register struct mc650frame *mcf = (struct mc650frame *)cmcf;
        register u_int type = mcf->mc65_summary;
        register u_int i;

        printf("machine check %x", type);
        if (type >= 0x80 && type <= 0x83)
                type -= (0x80 + 11);
        if (type < NMC650 && mc650[type])
                printf(": %s", mc650[type]);
        printf("\n\tvap %x istate1 %x istate2 %x pc %x psl %x\n",
            mcf->mc65_mrvaddr, mcf->mc65_istate1, mcf->mc65_istate2,
            mcf->mc65_pc, mcf->mc65_psl);
        printf("dmaser=0x%b qbear=0x%x dmaear=0x%x\n",
            ka650merr.merr_dser, DMASER_BITS, ka650merr.merr_qbear,
            ka650merr.merr_dear);
        ka650merr.merr_dser = DSER_CLEAR;

        i = mfpr(CAER);
        mtpr(CAER, CAER_MCC | CAER_DAT | CAER_TAG);
        if (i & CAER_MCC) {
                printf("cache 1 ");
                if (i & CAER_DAT) {
                        printf("data");
                        i = cache1data;
                        cache1data = time.tv_sec;
                }
                if (i & CAER_TAG) {
                        printf("tag");
                        i = cache1tag;
                        cache1tag = time.tv_sec;
                }
        } else if ((i & CAER_MCD) || (ka650merr.merr_errstat & MEM_CDAL)) {
                printf("CDAL");
                i = cdalerr;
                cdalerr = time.tv_sec;
        }
        if (time.tv_sec - i < 7) {
                ka650discache();
                printf(" parity error:  cacheing disabled\n");
        } else {
                printf(" parity error:  flushing cache\n");
                ka650encache();
        }
        /*
         * May be able to recover if type is 1-4, 0x80 or 0x81, but
         * only if FPD is set in the saved PSL, or bit VCR in Istate2
         * is clear.
         */
        if ((type > 0 && type < 5) || type == 11 || type == 12) {
                if ((mcf->mc65_psl & PSL_FPD)
                    || !(mcf->mc65_istate2 & IS2_VCR)) {
                        ka650_memerr();
                        return (MCHK_RECOVERED);
                }
        }
        return (MCHK_PANIC);
}

/*
 * Make sure both caches are off and not in diagnostic mode.  Clear the
 * 2nd level cache (by writing to each quadword entry), then enable it.
 * Enable 1st level cache too.
 */
ka650encache()
{
        register int i;

        ka650discache();
        for (i = 0; i < (KA650_CACHESIZE / sizeof(ka650cache[0])); i += 2)
                ka650cache[i] = 0;
        ka650cbd.cbd_cacr = CACR_CEN;
        mtpr(CADR, CADR_SEN2 | CADR_SEN1 | CADR_CENI | CADR_CEND);
}

ka650discache()
{
        mtpr(CADR, 0);
        ka650cbd.cbd_cacr = CACR_CPE;
}
#endif