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rf_paritylogging.h revision 1.2 
      1 /*	$NetBSD: rf_paritylogging.h,v 1.2 1999/01/26 02:34:00 oster 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  rf_ConfigureParityLogging(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr,
     35 	RF_Config_t *cfgPtr);
     36 int rf_GetDefaultNumFloatingReconBuffersParityLogging(RF_Raid_t *raidPtr);
     37 RF_HeadSepLimit_t rf_GetDefaultHeadSepLimitParityLogging(RF_Raid_t *raidPtr);
     38 RF_RegionId_t rf_MapRegionIDParityLogging(RF_Raid_t *raidPtr,
     39 	RF_SectorNum_t address);
     40 void rf_MapSectorParityLogging(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector,
     41 	RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector,
     42 	int remap);
     43 void rf_MapParityParityLogging(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector,
     44 	RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector,
     45 	int remap);
     46 void rf_MapLogParityLogging(RF_Raid_t *raidPtr, RF_RegionId_t regionID,
     47 	RF_SectorNum_t regionOffset, RF_RowCol_t *row, RF_RowCol_t *col,
     48 	RF_SectorNum_t *startSector);
     49 void rf_MapRegionParity(RF_Raid_t *raidPtr, RF_RegionId_t regionID,
     50 	RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *startSector,
     51 	RF_SectorCount_t *numSector);
     52 void rf_IdentifyStripeParityLogging(RF_Raid_t *raidPtr, RF_RaidAddr_t addr,
     53 	RF_RowCol_t **diskids, RF_RowCol_t *outRow);
     54 void rf_MapSIDToPSIDParityLogging(RF_RaidLayout_t *layoutPtr,
     55 	RF_StripeNum_t stripeID, RF_StripeNum_t *psID,
     56 	RF_ReconUnitNum_t *which_ru);
     57 void rf_ParityLoggingDagSelect(RF_Raid_t *raidPtr, RF_IoType_t type,
     58 	RF_AccessStripeMap_t *asmap, RF_VoidFuncPtr *createFunc);
     59 
     60 #endif /* !_RF__RF_PARITYLOGGING_H_ */
     61