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    SubjectRe: sym/ncr53c8xx phase error: Some progress



    Looking at the source code of ncr53c8xx.c at line 7525 I see:

    #if 0
    case 3: /* STATUS phase */
    nxtdsp = NCB_SCRIPT_PHYS (np, dispatch);
    break;
    #endif
    case 6: /* MSG OUT phase */
    np->scripth->nxtdsp_go_on[0] = cpu_to_scr(dsp + 8);
    if (dsp == NCB_SCRIPT_PHYS (np, send_ident)) {
    cp->host_status = HS_BUSY;
    nxtdsp = NCB_SCRIPTH_PHYS (np, clratn_go_on);
    }
    else if (dsp == NCB_SCRIPTH_PHYS (np, send_wdtr) ||
    dsp == NCB_SCRIPTH_PHYS (np, send_sdtr)) {
    nxtdsp = NCB_SCRIPTH_PHYS (np, nego_bad_phase);
    }
    break;
    #if 0
    case 7: /* MSG IN phase */
    nxtdsp = NCB_SCRIPT_PHYS (np, clrack);
    break;
    #endif


    So code to handle these errors seems to be disabled. I tried enabling it
    but I still got the problem.


    After the phase change I get:

    May 7 15:34:47 leaf kernel: attempt to access beyond end of device
    May 7 15:34:47 leaf kernel: 08:06: rw=0, want=1334509569, limit=704907

    as before

    Presumably some descriptor tables for the device have been trashed. Is
    this the real problem and is the phase error just a symptom?

    --
    Shaw Carruthers - shaw@shawc.demon.co.uk
    London SW14 7JW UK
    This is not a sig( with homage to Magritte).



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