/* * 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. *//* rf_raid5.h - header file for RAID Level 5 *//* * $Locker:  $ * $Log: rf_raid5.h,v $ * Revision 1.15  1996/07/27  23:36:08  jimz * Solaris port of simulator * * Revision 1.14  1996/07/13  00:00:59  jimz * sanitized generalized reconstruction architecture * cleaned up head sep, rbuf problems * * Revision 1.13  1996/06/10  11:55:47  jimz * Straightened out some per-array/not-per-array distinctions, fixed * a couple bugs related to confusion. Added shutdown lists. Removed * layout shutdown function (now subsumed by shutdown lists). * * Revision 1.12  1996/06/07  22:26:27  jimz * type-ify which_ru (RF_ReconUnitNum_t) * * Revision 1.11  1996/06/07  21:33:04  jimz * begin using consistent types for sector numbers, * stripe numbers, row+col numbers, recon unit numbers * * Revision 1.10  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 1.9  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 1.8  1996/05/27  18:56:37  jimz * more code cleanup * better typing * compiles in all 3 environments * * Revision 1.7  1996/05/24  01:59:45  jimz * another checkpoint in code cleanup for release * time to sync kernel tree * * Revision 1.6  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 1.5  1995/12/06  15:04:35  root * added copyright info * * Revision 1.4  1995/11/17  19:09:08  wvcii * added prototyping to MapParity * * Revision 1.3  1995/11/07  15:25:40  wvcii * changed RAIDFiveDagSelect prototype * function no longer generates numHdrSucc, numTermAnt * * Revision 1.2  1995/06/23  13:37:53  robby * updeated to prototypes in rf_layout.h * */#ifndef _RF__RF_RAID5_H_#define _RF__RF_RAID5_H_int  rf_ConfigureRAID5(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr,	RF_Config_t *cfgPtr);int rf_GetDefaultNumFloatingReconBuffersRAID5(RF_Raid_t *raidPtr);RF_HeadSepLimit_t rf_GetDefaultHeadSepLimitRAID5(RF_Raid_t *raidPtr);void rf_MapSectorRAID5(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector,	RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector, int remap);void rf_MapParityRAID5(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector,	RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector, int remap);void rf_IdentifyStripeRAID5(RF_Raid_t *raidPtr, RF_RaidAddr_t addr,	RF_RowCol_t **diskids, RF_RowCol_t *outRow);void rf_MapSIDToPSIDRAID5(RF_RaidLayout_t *layoutPtr,	RF_StripeNum_t stripeID, RF_StripeNum_t *psID,	RF_ReconUnitNum_t *which_ru);void rf_RaidFiveDagSelect(RF_Raid_t *raidPtr, RF_IoType_t type,	RF_AccessStripeMap_t *asmap, RF_VoidFuncPtr *createFunc);#endif /* !_RF__RF_RAID5_H_ */