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/* $OpenBSD: rf_pq.h,v 1.1 1999/01/11 14:29:39 niklas Exp $ */
/* $NetBSD: rf_pq.h,v 1.1 1998/11/13 04:20:32 oster Exp $ */
/*
* rf_pq.h
*/
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Daniel Stodolsky
*
* 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_pq.h,v
* Revision 1.9 1996/07/31 15:35:05 jimz
* evenodd changes; bugfixes for double-degraded archs, generalize
* some formerly PQ-only functions
*
* Revision 1.8 1996/07/27 23:36:08 jimz
* Solaris port of simulator
*
* Revision 1.7 1996/06/03 23:28:26 jimz
* more bugfixes
* check in tree to sync for IPDS runs with current bugfixes
* there still may be a problem with threads in the script test
* getting I/Os stuck- not trivially reproducible (runs ~50 times
* in a row without getting stuck)
*
* Revision 1.6 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 1.5 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 1.4 1996/05/27 18:56:37 jimz
* more code cleanup
* better typing
* compiles in all 3 environments
*
* Revision 1.3 1996/05/24 22:17:04 jimz
* continue code + namespace cleanup
* typed a bunch of flags
*
* Revision 1.2 1996/05/23 21:46:35 jimz
* checkpoint in code cleanup (release prep)
* lots of types, function names have been fixed
*
* Revision 1.1 1996/05/18 19:56:21 jimz
* Initial revision
*
*/
#ifndef _RF__RF_PQ_H_
#define _RF__RF_PQ_H_
#include "rf_archs.h"
extern RF_RedFuncs_t rf_pFuncs;
extern RF_RedFuncs_t rf_pRecoveryFuncs;
int rf_RegularONPFunc(RF_DagNode_t *node);
int rf_SimpleONPFunc(RF_DagNode_t *node);
int rf_RecoveryPFunc(RF_DagNode_t *node);
int rf_RegularPFunc(RF_DagNode_t *node);
#if (RF_INCLUDE_DECL_PQ > 0) || (RF_INCLUDE_RAID6 > 0)
extern RF_RedFuncs_t rf_qFuncs;
extern RF_RedFuncs_t rf_qRecoveryFuncs;
extern RF_RedFuncs_t rf_pqRecoveryFuncs;
void rf_PQDagSelect(RF_Raid_t *raidPtr, RF_IoType_t type,
RF_AccessStripeMap_t *asmap, RF_VoidFuncPtr *createFunc);
RF_CREATE_DAG_FUNC_DECL(rf_PQCreateLargeWriteDAG);
int rf_RegularONQFunc(RF_DagNode_t *node);
int rf_SimpleONQFunc(RF_DagNode_t *node);
RF_CREATE_DAG_FUNC_DECL(rf_PQCreateSmallWriteDAG);
int rf_RegularPQFunc(RF_DagNode_t *node);
int rf_RegularQFunc(RF_DagNode_t *node);
void rf_Degraded_100_PQFunc(RF_DagNode_t *node);
int rf_RecoveryQFunc(RF_DagNode_t *node);
int rf_RecoveryPQFunc(RF_DagNode_t *node);
void rf_PQ_DegradedWriteQFunc(RF_DagNode_t *node);
void rf_IncQ(unsigned long *dest, unsigned long *buf, unsigned length,
unsigned coeff);
void rf_PQ_recover(unsigned long *pbuf, unsigned long *qbuf, unsigned long *abuf,
unsigned long *bbuf, unsigned length, unsigned coeff_a, unsigned coeff_b);
#endif /* (RF_INCLUDE_DECL_PQ > 0) || (RF_INCLUDE_RAID6 > 0) */
#endif /* !_RF__RF_PQ_H_ */
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