FreeBSD/Linux Kernel Cross Reference
sys/dev/raidframe/rf_parityscan.h

     /*      $NetBSD: rf_parityscan.h,v 1.4 2001/10/04 15:58:55 oster Exp $  */
     /*
      * Copyright (c) 1995 Carnegie-Mellon University.
      * All rights reserved.
      *
      * Author: Mark Holland
      *
      * Permission to use, copy, modify and distribute this software and
      * its documentation is hereby granted, provided that both the copyright
     * notice and this permission notice appear in all copies of the
     * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     *
     * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     *
     * Carnegie Mellon requests users of this software to return to
     *
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     *
     * any improvements or extensions that they make and grant Carnegie the
     * rights to redistribute these changes.
     */
    
    #ifndef _RF__RF_PARITYSCAN_H_
    #define _RF__RF_PARITYSCAN_H_
    
    #include <dev/raidframe/raidframevar.h>
    
    #include "rf_alloclist.h"
    
    int     rf_RewriteParity(RF_Raid_t * raidPtr);
    int 
    rf_VerifyParityBasic(RF_Raid_t * raidPtr, RF_RaidAddr_t raidAddr,
        RF_PhysDiskAddr_t * parityPDA, int correct_it, RF_RaidAccessFlags_t flags);
    int 
    rf_VerifyParity(RF_Raid_t * raidPtr, RF_AccessStripeMap_t * stripeMap,
        int correct_it, RF_RaidAccessFlags_t flags);
    int     rf_TryToRedirectPDA(RF_Raid_t * raidPtr, RF_PhysDiskAddr_t * pda, int parity);
    int     rf_VerifyDegrModeWrite(RF_Raid_t * raidPtr, RF_AccessStripeMapHeader_t * asmh);
    RF_DagHeader_t *
    rf_MakeSimpleDAG(RF_Raid_t * raidPtr, int nNodes,
        int bytesPerSU, char *databuf,
        int (*doFunc) (RF_DagNode_t *),
        int (*undoFunc) (RF_DagNode_t *),
        char *name, RF_AllocListElem_t * alloclist,
        RF_RaidAccessFlags_t flags, int priority);
    
    #define RF_DO_CORRECT_PARITY   1
    #define RF_DONT_CORRECT_PARITY 0
    
    /*
     * Return vals for VerifyParity operation
     *
     * Ordering is important here.
     */
    #define RF_PARITY_OKAY               0  /* or no parity information */
    #define RF_PARITY_CORRECTED          1
    #define RF_PARITY_BAD                2
    #define RF_PARITY_COULD_NOT_CORRECT  3
    #define RF_PARITY_COULD_NOT_VERIFY   4
    
    #endif                          /* !_RF__RF_PARITYSCAN_H_ */

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