sys/dev/raidframe/rf_parityscan.h

   1 /*      $NetBSD: rf_parityscan.h,v 1.7 2005/12/11 12:23:37 christos Exp $       */
   2 /*
   3  * Copyright (c) 1995 Carnegie-Mellon University.
   4  * All rights reserved.
   5  *
   6  * Author: Mark Holland
   7  *
   8  * Permission to use, copy, modify and distribute this software and
   9  * its documentation is hereby granted, provided that both the copyright
  10  * notice and this permission notice appear in all copies of the
  11  * software, derivative works or modified versions, and any portions
  12  * thereof, and that both notices appear in supporting documentation.
  13  *
  14  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  15  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  16  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  17  *
  18  * Carnegie Mellon requests users of this software to return to
  19  *
  20  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  21  *  School of Computer Science
  22  *  Carnegie Mellon University
  23  *  Pittsburgh PA 15213-3890
  24  *
  25  * any improvements or extensions that they make and grant Carnegie the
  26  * rights to redistribute these changes.
  27  */
  28
  29 #ifndef _RF__RF_PARITYSCAN_H_
  30 #define _RF__RF_PARITYSCAN_H_
  31
  32 #include <dev/raidframe/raidframevar.h>
  33
  34 #include "rf_alloclist.h"
  35
  36 int     rf_RewriteParity(RF_Raid_t *);
  37 int     rf_RewriteParityRange(RF_Raid_t *, RF_SectorNum_t, RF_SectorNum_t);
  38 int     rf_VerifyParityBasic(RF_Raid_t *, RF_RaidAddr_t, RF_PhysDiskAddr_t *,
  39     int, RF_RaidAccessFlags_t);
  40 int     rf_VerifyParity(RF_Raid_t *, RF_AccessStripeMap_t *, int,
  41     RF_RaidAccessFlags_t);
  42 int     rf_TryToRedirectPDA(RF_Raid_t *, RF_PhysDiskAddr_t *, int);
  43 int     rf_VerifyDegrModeWrite(RF_Raid_t *, RF_AccessStripeMapHeader_t *);
  44 RF_DagHeader_t *rf_MakeSimpleDAG(RF_Raid_t *, int, int, char *,
  45     int (*)(RF_DagNode_t *), int (*) (RF_DagNode_t *), const char *,
  46     RF_AllocListElem_t *, RF_RaidAccessFlags_t, int);
  47
  48 #define RF_DO_CORRECT_PARITY   1
  49 #define RF_DONT_CORRECT_PARITY 0
  50
  51 /*
  52  * Return vals for VerifyParity operation
  53  *
  54  * Ordering is important here.
  55  */
  56 #define RF_PARITY_OKAY               0  /* or no parity information */
  57 #define RF_PARITY_CORRECTED          1
  58 #define RF_PARITY_BAD                2
  59 #define RF_PARITY_COULD_NOT_CORRECT  3
  60 #define RF_PARITY_COULD_NOT_VERIFY   4
  61
  62 #endif                          /* !_RF__RF_PARITYSCAN_H_ */