sys/dev/raidframe/rf_raid5.h

   1 /*      $NetBSD: rf_raid5.h,v 1.3.42.4 2005/03/04 16:50:08 skrll 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@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_ */