- Problem Statement: 

    Dstop: Control parity error from SDC

- Symptoms:

    'wfail' output reports something similar to the following:

       01  redxl> dumpf load dsmd.dstop.020423.1029.47
       02  Created Tue Apr 23 10:29:48 2002
       03  By hpost v. 1.2 Generic 112488-03 Feb 15 2002 13:40:50  executing as pid=8599
       04  On ssc name =  rasputin-sc0.SD_RASCAL.West.Sun.COM
       05  Domain =  0=A    Platform = rasputin
       06  Boards in dump: master SC    CPs/CSBs[1:0]: 3
       07            EXB[17:0]: 10108
       08          Slot0[17:0]: 10108
       09          Slot1[17:0]: 10108
       00  -D option, -d
       11  "DSMD DomainStop Dump"
       12  0 errors occurred while creating this dump.
       13  redxl> wfail
       14  SDI EX03/S0: All SDI is DStopped and RStopped,         requested by DARB.
       15  SDI EX08/S0  Master_Stop_Status0[31:0] = 8004004F
       16          MStop0[3:0]: All SDI logic is DStopped + Recordstopped.
       17  SDI EX08/S0  Dstop0[31:0] = 10019000
       18          Dstop0[16]: D    DARB texp requests all Dstop (M)
       19          Dstop0[28]: D 1E Slot0 asserted Error, enabled to cause Dstop (M)
       10  EPLD SB08  Err1_Dom0: Mask= 00  Err= 0C  1stErr= 0C
       21          Err1[2]:  1E+ Error reported by DX0
       22          Err1[3]:  1E+ Error reported by DX1
       23  DX SB08/DX0  Gen_Err[31:0] = 00018001
       24          GErr[ 0,16]:   1E+ Control parity error from SDC
       25  FAIL Slot SB8:  Dstop detected by DX SB8/DX0.
       26  Primary service FRU is Slot SB8.
       27  DX SB08/DX1  Gen_Err[31:0] = 00018001
       28          GErr[ 0,16]:   1E+ Control parity error from SDC
       29  FAIL Slot SB8:  Dstop detected by DX SB8/DX1.
       30  Primary service FRU is Slot SB8.
       31  SDI EX16/S0: All SDI is DStopped and RStopped,         requested by DARB.
       32  DARB C0: enabled ports (expanders)          [17:0]: 14108
       33  DARB C0: other darb req Dstop+Rstop for exps[17:0]: 00100
       34  DARB C1: enabled ports (expanders)          [17:0]: 14108
       35  DARB C1: other darb req Dstop+Rstop for exps[17:0]: 00100
            

- Troubleshooting:

    The dump header tells us that this Dstop was generated by dsmd (lines 10,11) 
    while a domain was active. This is also evident by the dump file name - 
    dsmd.dstop files are created by dsmd as part of an ASR. Walking the
    error chain:

     - The SDI on EX8 calls for Dstop as directed by its Slot 0 board, SB8 (line 19)
     - The EPLD on SB8 indicates the DX0 and DX1 asserted error (line 21,22)
     - DX0 and DX1 both report a parity error from the SDC (lines 23,24,27,28)
     - SB8 is FAILed out and named the FRU (lines 25,29,30)

    The SDC sends control data to the DXs for data routing. In this case, DX0 and
    DX1 in SB8 detected a parity error on those signals from the SDC. The 
    pathway for these signals is entirely contained within the system board. 

- Resolution:

    Repair/replace SB8.

    For the general case, replace the Slot 0/1 board whose DXs report this error.

- Summary of part number and patch ID's 

    http://infoserver.central.sun.com/data/syshbk/Devices/System_Board/SYSBD_SunFire_USIIICu.html
    http://infoserver.central.sun.com/data/syshbk/Devices/I_O/IO_SunFire_15K_hsPCI_IO_Board.html

- References and bug IDs

    SunSolve Article 48122 

- Additional background information

- Meta-Data/Problem categorization:

Product/Platform: SF12K/SF15K
Category:

- Keywords

15K, 12K, SF15K, SF12K, starcat, dstop, Control parity error from SDC