usr/src/sys/vax/vax/ka750.c

/*-
 * Copyright (c) 1982, 1986, 1988 The Regents of the University of California.
 * 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.
 * 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.
 *
 *      @(#)ka750.c     7.4 (Berkeley) 5/9/91
 */

#if VAX750

/*
 * 750-specific code.
 */

#include "sys/param.h"

#include "../include/cpu.h"
#include "mem.h"
#include "../include/mtpr.h"

struct  mcr750 {
        int     mc_err;                 /* error bits */
        int     mc_inh;                 /* inhibit crd */
};

#define M750_ICRD       0x10000000      /* inhibit crd interrupts, in [1] */
#define M750_UNCORR     0xc0000000      /* uncorrectable error, in [0] */
#define M750_CORERR     0x20000000      /* correctable error, in [0] */

#define M750_INH(mcr)   ((mcr)->mc_inh = 0)
#define M750_ENA(mcr)   ((mcr)->mc_err = (M750_UNCORR|M750_CORERR), \
                         (mcr)->mc_inh = M750_ICRD)
#define M750_ERR(mcr)   ((mcr)->mc_err & (M750_UNCORR|M750_CORERR))

#define M750_SYN(err)   ((err) & 0x7f)
#define M750_ADDR(err)  (((err) >> 9) & 0x7fff)

/* enable crd interrupts */
ka750_memenable()
{

        M750_ENA((struct mcr750 *)mcraddr[0]);
}

/* log crd errors */
ka750_memerr()
{
        register struct mcr750 *mcr = (struct mcr750 *)mcraddr[0];
        register int err;

        if (M750_ERR(mcr)) {
                err = mcr->mc_err;      /* careful with i/o space refs */
                printf("mcr0: %s", err & M750_UNCORR ?
                    "hard error" : "soft ecc");
                printf(" addr %x syn %x\n", M750_ADDR(err), M750_SYN(err));
                M750_INH(mcr);
        }
}

extern char *mc780750[];

struct mc750frame {
        int     mc5_bcnt;               /* byte count == 0x28 */
        int     mc5_summary;            /* summary parameter (as above) */
        int     mc5_va;                 /* virtual address register */
        int     mc5_errpc;              /* error pc */
        int     mc5_mdr;
        int     mc5_svmode;             /* saved mode register */
        int     mc5_rdtimo;             /* read lock timeout */
        int     mc5_tbgpar;             /* tb group parity error register */
        int     mc5_cacherr;            /* cache error register */
        int     mc5_buserr;             /* bus error register */
        int     mc5_mcesr;              /* machine check status register */
        int     mc5_pc;                 /* trapped pc */
        int     mc5_psl;                /* trapped psl */
};

#define MC750_TBERR     2               /* type code of cp tbuf par */
#define MC750_TBPAR     4               /* tbuf par bit in mcesr */

ka750_mchk(cmcf)
        caddr_t cmcf;
{
        register struct mc750frame *mcf = (struct mc750frame *)cmcf;
        register int type = mcf->mc5_summary;
        int mcsr = mfpr(MCSR);

        printf("machine check %x: %s%s\n", type, mc780750[type&0xf],
            (type&0xf0) ? " abort" : " fault");
        mtpr(TBIA, 0);
        mtpr(MCESR, 0xf);
        printf(
"\tva %x errpc %x mdr %x smr %x rdtimo %x tbgpar %x cacherr %x\n",
            mcf->mc5_va, mcf->mc5_errpc, mcf->mc5_mdr, mcf->mc5_svmode,
            mcf->mc5_rdtimo, mcf->mc5_tbgpar, mcf->mc5_cacherr);
        printf("\tbuserr %x mcesr %x pc %x psl %x mcsr %x\n",
            mcf->mc5_buserr, mcf->mc5_mcesr, mcf->mc5_pc, mcf->mc5_psl,
            mcsr);
        if (type == MC750_TBERR && (mcf->mc5_mcesr&0xe) == MC750_TBPAR) {
                printf("tbuf par: flushing and returning\n");
                return (MCHK_RECOVERED);
        }
        return (MCHK_PANIC);
}
#endif