/*      $NetBSD: rf_raid4.h,v 1.6 2005/12/11 12:23:37 christos 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  [email protected]
*  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 * col, RF_SectorNum_t * diskSector, int remap);
void
rf_MapParityRAID4(RF_Raid_t * raidPtr, RF_RaidAddr_t raidSector,
   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);
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_ */