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      1 /*	$NetBSD: rf_paritylogging.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: William V. Courtright II
      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 /* header file for Parity Logging */
     30 
     31 #ifndef _RF__RF_PARITYLOGGING_H_
     32 #define _RF__RF_PARITYLOGGING_H_
     33 
     34 int
     35 rf_ConfigureParityLogging(RF_ShutdownList_t ** listp, RF_Raid_t * raidPtr,
     36     RF_Config_t * cfgPtr);
     37 int     rf_GetDefaultNumFloatingReconBuffersParityLogging(RF_Raid_t * raidPtr);
     38 RF_HeadSepLimit_t rf_GetDefaultHeadSepLimitParityLogging(RF_Raid_t * raidPtr);
     39 RF_RegionId_t
     40 rf_MapRegionIDParityLogging(RF_Raid_t * raidPtr,
     41     RF_SectorNum_t address);
     42 void
     43 rf_MapSectorParityLogging(RF_Raid_t * raidPtr, RF_RaidAddr_t raidSector,
     44     RF_RowCol_t * col, RF_SectorNum_t * diskSector,
     45     int remap);
     46 void
     47 rf_MapParityParityLogging(RF_Raid_t * raidPtr, RF_RaidAddr_t raidSector,
     48     RF_RowCol_t * col, RF_SectorNum_t * diskSector,
     49     int remap);
     50 void
     51 rf_MapLogParityLogging(RF_Raid_t * raidPtr, RF_RegionId_t regionID,
     52     RF_SectorNum_t regionOffset, RF_RowCol_t * col,
     53     RF_SectorNum_t * startSector);
     54 void
     55 rf_MapRegionParity(RF_Raid_t * raidPtr, RF_RegionId_t regionID,
     56     RF_RowCol_t * col, RF_SectorNum_t * startSector,
     57     RF_SectorCount_t * numSector);
     58 void
     59 rf_IdentifyStripeParityLogging(RF_Raid_t * raidPtr, RF_RaidAddr_t addr,
     60     RF_RowCol_t ** diskids);
     61 void
     62 rf_MapSIDToPSIDParityLogging(RF_RaidLayout_t * layoutPtr,
     63     RF_StripeNum_t stripeID, RF_StripeNum_t * psID,
     64     RF_ReconUnitNum_t * which_ru);
     65 void
     66 rf_ParityLoggingDagSelect(RF_Raid_t * raidPtr, RF_IoType_t type,
     67     RF_AccessStripeMap_t * asmap, RF_VoidFuncPtr * createFunc);
     68 
     69 #endif				/* !_RF__RF_PARITYLOGGING_H_ */
     70