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Annotation of 43BSDTahoe/sys/vax/ka750.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986, 1988 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  *
                      6:  *     @(#)ka750.c     7.2 (Berkeley) 7/9/88
                      7:  */
                      8: 
                      9: #if VAX750
                     10: 
                     11: /*
                     12:  * 750-specific code.
                     13:  */
                     14: 
                     15: #include "param.h"
                     16: 
                     17: #include "cpu.h"
                     18: #include "mem.h"
                     19: #include "mtpr.h"
                     20: 
                     21: struct mcr750 {
                     22:        int     mc_err;                 /* error bits */
                     23:        int     mc_inh;                 /* inhibit crd */
                     24: };
                     25: 
                     26: #define        M750_ICRD       0x10000000      /* inhibit crd interrupts, in [1] */
                     27: #define        M750_UNCORR     0xc0000000      /* uncorrectable error, in [0] */
                     28: #define        M750_CORERR     0x20000000      /* correctable error, in [0] */
                     29: 
                     30: #define        M750_INH(mcr)   ((mcr)->mc_inh = 0)
                     31: #define        M750_ENA(mcr)   ((mcr)->mc_err = (M750_UNCORR|M750_CORERR), \
                     32:                         (mcr)->mc_inh = M750_ICRD)
                     33: #define        M750_ERR(mcr)   ((mcr)->mc_err & (M750_UNCORR|M750_CORERR))
                     34: 
                     35: #define        M750_SYN(err)   ((err) & 0x7f)
                     36: #define        M750_ADDR(err)  (((err) >> 9) & 0x7fff)
                     37: 
                     38: /* enable crd interrupts */
                     39: ka750_memenable()
                     40: {
                     41: 
                     42:        M750_ENA((struct mcr750 *)mcraddr[0]);
                     43: }
                     44: 
                     45: /* log crd errors */
                     46: ka750_memerr()
                     47: {
                     48:        register struct mcr750 *mcr = (struct mcr750 *)mcraddr[0];
                     49:        register int err;
                     50: 
                     51:        if (M750_ERR(mcr)) {
                     52:                err = mcr->mc_err;      /* careful with i/o space refs */
                     53:                printf("mcr0: %s", err & M750_UNCORR ?
                     54:                    "hard error" : "soft ecc");
                     55:                printf(" addr %x syn %x\n", M750_ADDR(err), M750_SYN(err));
                     56:                M750_INH(mcr);
                     57:        }
                     58: }
                     59: 
                     60: extern char *mc780750[];
                     61: 
                     62: struct mc750frame {
                     63:        int     mc5_bcnt;               /* byte count == 0x28 */
                     64:        int     mc5_summary;            /* summary parameter (as above) */
                     65:        int     mc5_va;                 /* virtual address register */
                     66:        int     mc5_errpc;              /* error pc */
                     67:        int     mc5_mdr;
                     68:        int     mc5_svmode;             /* saved mode register */
                     69:        int     mc5_rdtimo;             /* read lock timeout */
                     70:        int     mc5_tbgpar;             /* tb group parity error register */
                     71:        int     mc5_cacherr;            /* cache error register */
                     72:        int     mc5_buserr;             /* bus error register */
                     73:        int     mc5_mcesr;              /* machine check status register */
                     74:        int     mc5_pc;                 /* trapped pc */
                     75:        int     mc5_psl;                /* trapped psl */
                     76: };
                     77: 
                     78: #define MC750_TBERR    2               /* type code of cp tbuf par */
                     79: #define        MC750_TBPAR     4               /* tbuf par bit in mcesr */
                     80: 
                     81: ka750_mchk(cmcf)
                     82:        caddr_t cmcf;
                     83: {
                     84:        register struct mc750frame *mcf = (struct mc750frame *)cmcf;
                     85:        register int type = mcf->mc5_summary;
                     86:        int mcsr = mfpr(MCSR);
                     87: 
                     88:        printf("machine check %x: %s%s\n", type, mc780750[type&0xf],
                     89:            (type&0xf0) ? " abort" : " fault"); 
                     90:        mtpr(TBIA, 0);
                     91:        mtpr(MCESR, 0xf);
                     92:        printf(
                     93: "\tva %x errpc %x mdr %x smr %x rdtimo %x tbgpar %x cacherr %x\n",
                     94:            mcf->mc5_va, mcf->mc5_errpc, mcf->mc5_mdr, mcf->mc5_svmode,
                     95:            mcf->mc5_rdtimo, mcf->mc5_tbgpar, mcf->mc5_cacherr);
                     96:        printf("\tbuserr %x mcesr %x pc %x psl %x mcsr %x\n",
                     97:            mcf->mc5_buserr, mcf->mc5_mcesr, mcf->mc5_pc, mcf->mc5_psl,
                     98:            mcsr);
                     99:        if (type == MC750_TBERR && (mcf->mc5_mcesr&0xe) == MC750_TBPAR) {
                    100:                printf("tbuf par: flushing and returning\n");
                    101:                return (MCHK_RECOVERED);
                    102:        }
                    103:        return (MCHK_PANIC);
                    104: }
                    105: #endif

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