75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
/* $NetBSD: rf_pq.h,v 1.4 2005/02/27 00:27:45 perry Exp $ */
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/*
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* rf_pq.h
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*/
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Daniel Stodolsky
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#ifndef _RF__RF_PQ_H_
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#define _RF__RF_PQ_H_
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#include "rf_archs.h"
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extern RF_RedFuncs_t rf_pFuncs;
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extern RF_RedFuncs_t rf_pRecoveryFuncs;
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int rf_RegularONPFunc(RF_DagNode_t * node);
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int rf_SimpleONPFunc(RF_DagNode_t * node);
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int rf_RecoveryPFunc(RF_DagNode_t * node);
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int rf_RegularPFunc(RF_DagNode_t * node);
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#if (RF_INCLUDE_DECL_PQ > 0) || (RF_INCLUDE_RAID6 > 0)
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extern RF_RedFuncs_t rf_qFuncs;
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extern RF_RedFuncs_t rf_qRecoveryFuncs;
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extern RF_RedFuncs_t rf_pqRecoveryFuncs;
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void
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rf_PQDagSelect(RF_Raid_t * raidPtr, RF_IoType_t type,
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RF_AccessStripeMap_t * asmap, RF_VoidFuncPtr * createFunc);
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RF_CREATE_DAG_FUNC_DECL(rf_PQCreateLargeWriteDAG);
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int rf_RegularONQFunc(RF_DagNode_t * node);
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int rf_SimpleONQFunc(RF_DagNode_t * node);
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RF_CREATE_DAG_FUNC_DECL(rf_PQCreateSmallWriteDAG);
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int rf_RegularPQFunc(RF_DagNode_t * node);
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int rf_RegularQFunc(RF_DagNode_t * node);
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void rf_Degraded_100_PQFunc(RF_DagNode_t * node);
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int rf_RecoveryQFunc(RF_DagNode_t * node);
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int rf_RecoveryPQFunc(RF_DagNode_t * node);
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void rf_PQ_DegradedWriteQFunc(RF_DagNode_t * node);
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void
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rf_IncQ(unsigned long *dest, unsigned long *buf, unsigned length,
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unsigned coeff);
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void
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rf_PQ_recover(unsigned long *pbuf, unsigned long *qbuf, unsigned long *abuf,
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unsigned long *bbuf, unsigned length, unsigned coeff_a, unsigned coeff_b);
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#endif /* (RF_INCLUDE_DECL_PQ > 0) ||
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* (RF_INCLUDE_RAID6 > 0) */
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#endif /* !_RF__RF_PQ_H_ */
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