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/* $OpenBSD: rf_parityscan.h,v 1.1 1999/01/11 14:29:38 niklas Exp $ */
/* $NetBSD: rf_parityscan.h,v 1.1 1998/11/13 04:20:32 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.
*/
/* :
* Log: rf_parityscan.h,v
* Revision 1.14 1996/07/05 18:01:12 jimz
* don't make parity protos ndef KERNEL
*
* Revision 1.13 1996/06/20 17:41:43 jimz
* change decl for VerifyParity
*
* Revision 1.12 1996/06/20 15:38:39 jimz
* renumber parityscan return codes
*
* Revision 1.11 1996/06/19 22:23:01 jimz
* parity verification is now a layout-configurable thing
* not all layouts currently support it (correctly, anyway)
*
* Revision 1.10 1996/06/09 02:36:46 jimz
* lots of little crufty cleanup- fixup whitespace
* issues, comment #ifdefs, improve typing in some
* places (esp size-related)
*
* Revision 1.9 1996/06/07 21:33:04 jimz
* begin using consistent types for sector numbers,
* stripe numbers, row+col numbers, recon unit numbers
*
* Revision 1.8 1996/06/02 17:31:48 jimz
* Moved a lot of global stuff into array structure, where it belongs.
* Fixed up paritylogging, pss modules in this manner. Some general
* code cleanup. Removed lots of dead code, some dead files.
*
* Revision 1.7 1996/05/31 22:26:54 jimz
* fix a lot of mapping problems, memory allocation problems
* found some weird lock issues, fixed 'em
* more code cleanup
*
* Revision 1.6 1996/05/24 22:17:04 jimz
* continue code + namespace cleanup
* typed a bunch of flags
*
* Revision 1.5 1996/05/24 04:28:55 jimz
* release cleanup ckpt
*
* Revision 1.4 1996/05/23 21:46:35 jimz
* checkpoint in code cleanup (release prep)
* lots of types, function names have been fixed
*
* Revision 1.3 1996/05/18 19:51:34 jimz
* major code cleanup- fix syntax, make some types consistent,
* add prototypes, clean out dead code, et cetera
*
* Revision 1.2 1995/11/30 16:20:46 wvcii
* added copyright info
*
*/
#ifndef _RF__RF_PARITYSCAN_H_
#define _RF__RF_PARITYSCAN_H_
#include "rf_types.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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