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/* $OpenBSD: rf_raid4.h,v 1.2 1999/02/16 00:03:17 niklas Exp $ */
/* $NetBSD: rf_raid4.h,v 1.3 1999/02/05 00:06:16 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Rachad Youssef
*
* 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_raid4.h header file for RAID Level 4 */
#ifndef _RF__RF_RAID4_H_
#define _RF__RF_RAID4_H_
int
rf_ConfigureRAID4(RF_ShutdownList_t ** listp, RF_Raid_t * raidPtr,
RF_Config_t * cfgPtr);
int rf_GetDefaultNumFloatingReconBuffersRAID4(RF_Raid_t * raidPtr);
RF_HeadSepLimit_t rf_GetDefaultHeadSepLimitRAID4(RF_Raid_t * raidPtr);
void
rf_MapSectorRAID4(RF_Raid_t * raidPtr, RF_RaidAddr_t raidSector,
RF_RowCol_t * row, RF_RowCol_t * col, RF_SectorNum_t * diskSector, int remap);
void
rf_MapParityRAID4(RF_Raid_t * raidPtr, RF_RaidAddr_t raidSector,
RF_RowCol_t * row, RF_RowCol_t * col, RF_SectorNum_t * diskSector, int remap);
void
rf_IdentifyStripeRAID4(RF_Raid_t * raidPtr, RF_RaidAddr_t addr,
RF_RowCol_t ** diskids, RF_RowCol_t * outRow);
void
rf_MapSIDToPSIDRAID4(RF_RaidLayout_t * layoutPtr,
RF_StripeNum_t stripeID, RF_StripeNum_t * psID,
RF_ReconUnitNum_t * which_ru);
void
rf_RAID4DagSelect(RF_Raid_t * raidPtr, RF_IoType_t type,
RF_AccessStripeMap_t * asmap, RF_VoidFuncPtr * createFunc);
#endif /* !_RF__RF_RAID4_H_ */
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