/* * 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. *//* * $Locker:  $ * $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_ */