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      1 /*	$NetBSD: rf_raid5_rotatedspare.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: Khalil Amiri
      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_rotatedspare.h - header file for RAID Level 5 with rotated sparing */
     30 
     31 #ifndef _RF__RF_RAID5_ROTATEDSPARE_H_
     32 #define _RF__RF_RAID5_ROTATEDSPARE_H_
     33 
     34 int
     35 rf_ConfigureRAID5_RS(RF_ShutdownList_t ** listp, RF_Raid_t * raidPtr,
     36     RF_Config_t * cfgPtr);
     37 RF_ReconUnitCount_t rf_GetNumSpareRUsRAID5_RS(RF_Raid_t * raidPtr);
     38 void
     39 rf_MapSectorRAID5_RS(RF_Raid_t * raidPtr, RF_RaidAddr_t raidSector,
     40     RF_RowCol_t * col, RF_SectorNum_t * diskSector, int remap);
     41 void
     42 rf_MapParityRAID5_RS(RF_Raid_t * raidPtr, RF_RaidAddr_t raidSector,
     43     RF_RowCol_t * col, RF_SectorNum_t * diskSector, int remap);
     44 void
     45 rf_IdentifyStripeRAID5_RS(RF_Raid_t * raidPtr, RF_RaidAddr_t addr,
     46     RF_RowCol_t ** diskids);
     47 void
     48 rf_MapSIDToPSIDRAID5_RS(RF_RaidLayout_t * layoutPtr,
     49     RF_StripeNum_t stripeID, RF_StripeNum_t * psID,
     50     RF_ReconUnitNum_t * which_ru);
     51 
     52 #endif				/* !_RF__RF_RAID5_ROTATEDSPARE_H_ */
     53