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      1 /*	$NetBSD: rf_raid5.h,v 1.6 2005/12/11 12:23:37 christos Exp $	*/
      2 /*
      3  * Copyright (c) 1995 Carnegie-Mellon University.
      4  * All rights reserved.
      5  *
      6  * Author: Mark Holland
      7  *
      8  * Permission to use, copy, modify and distribute this software and
      9  * its documentation is hereby granted, provided that both the copyright
     10  * notice and this permission notice appear in all copies of the
     11  * software, derivative works or modified versions, and any portions
     12  * thereof, and that both notices appear in supporting documentation.
     13  *
     14  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     15  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     16  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     17  *
     18  * Carnegie Mellon requests users of this software to return to
     19  *
     20  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     21  *  School of Computer Science
     22  *  Carnegie Mellon University
     23  *  Pittsburgh PA 15213-3890
     24  *
     25  * any improvements or extensions that they make and grant Carnegie the
     26  * rights to redistribute these changes.
     27  */
     28 
     29 /* rf_raid5.h - header file for RAID Level 5 */
     30 
     31 #ifndef _RF__RF_RAID5_H_
     32 #define _RF__RF_RAID5_H_
     33 
     34 int
     35 rf_ConfigureRAID5(RF_ShutdownList_t ** listp, RF_Raid_t * raidPtr,
     36     RF_Config_t * cfgPtr);
     37 int     rf_GetDefaultNumFloatingReconBuffersRAID5(RF_Raid_t * raidPtr);
     38 RF_HeadSepLimit_t rf_GetDefaultHeadSepLimitRAID5(RF_Raid_t * raidPtr);
     39 void
     40 rf_MapSectorRAID5(RF_Raid_t * raidPtr, RF_RaidAddr_t raidSector,
     41     RF_RowCol_t * col, RF_SectorNum_t * diskSector, int remap);
     42 void
     43 rf_MapParityRAID5(RF_Raid_t * raidPtr, RF_RaidAddr_t raidSector,
     44     RF_RowCol_t * col, RF_SectorNum_t * diskSector, int remap);
     45 void
     46 rf_IdentifyStripeRAID5(RF_Raid_t * raidPtr, RF_RaidAddr_t addr,
     47     RF_RowCol_t ** diskids);
     48 void
     49 rf_MapSIDToPSIDRAID5(RF_RaidLayout_t * layoutPtr,
     50     RF_StripeNum_t stripeID, RF_StripeNum_t * psID,
     51     RF_ReconUnitNum_t * which_ru);
     52 void
     53 rf_RaidFiveDagSelect(RF_Raid_t * raidPtr, RF_IoType_t type,
     54     RF_AccessStripeMap_t * asmap, RF_VoidFuncPtr * createFunc);
     55 
     56 #endif				/* !_RF__RF_RAID5_H_ */
     57