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/* $OpenBSD: rf_pq.h,v 1.2 1999/02/16 00:03:10 niklas Exp $ */
/* $NetBSD: rf_pq.h,v 1.3 1999/02/05 00:06:15 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.
*/
#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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