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rf_interdecluster.h revision 1.1 
      1 /*	$NetBSD: rf_interdecluster.h,v 1.1 1998/11/13 04:20:30 oster 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_interdecluster.h
     30  * header file for Interleaved Declustering
     31  */
     32 
     33 /*
     34  * :
     35  * Log: rf_interdecluster.h,v
     36  * Revision 1.13  1996/07/29 14:05:12  jimz
     37  * fix numPUs/numRUs confusion (everything is now numRUs)
     38  * clean up some commenting, return values
     39  *
     40  * Revision 1.12  1996/07/22  19:52:16  jimz
     41  * switched node params to RF_DagParam_t, a union of
     42  * a 64-bit int and a void *, for better portability
     43  * attempted hpux port, but failed partway through for
     44  * lack of a single C compiler capable of compiling all
     45  * source files
     46  *
     47  * Revision 1.11  1996/07/13  00:00:59  jimz
     48  * sanitized generalized reconstruction architecture
     49  * cleaned up head sep, rbuf problems
     50  *
     51  * Revision 1.10  1996/06/10  11:55:47  jimz
     52  * Straightened out some per-array/not-per-array distinctions, fixed
     53  * a couple bugs related to confusion. Added shutdown lists. Removed
     54  * layout shutdown function (now subsumed by shutdown lists).
     55  *
     56  * Revision 1.9  1996/06/07  22:26:27  jimz
     57  * type-ify which_ru (RF_ReconUnitNum_t)
     58  *
     59  * Revision 1.8  1996/06/07  21:33:04  jimz
     60  * begin using consistent types for sector numbers,
     61  * stripe numbers, row+col numbers, recon unit numbers
     62  *
     63  * Revision 1.7  1996/06/06  18:41:58  jimz
     64  * add RAIDIDagSelect
     65  *
     66  * Revision 1.6  1996/05/31  22:26:54  jimz
     67  * fix a lot of mapping problems, memory allocation problems
     68  * found some weird lock issues, fixed 'em
     69  * more code cleanup
     70  *
     71  * Revision 1.5  1996/05/27  18:56:37  jimz
     72  * more code cleanup
     73  * better typing
     74  * compiles in all 3 environments
     75  *
     76  * Revision 1.4  1996/05/24  01:59:45  jimz
     77  * another checkpoint in code cleanup for release
     78  * time to sync kernel tree
     79  *
     80  * Revision 1.3  1996/05/18  19:51:34  jimz
     81  * major code cleanup- fix syntax, make some types consistent,
     82  * add prototypes, clean out dead code, et cetera
     83  *
     84  * Revision 1.2  1995/12/01  19:07:25  root
     85  * added copyright info
     86  *
     87  * Revision 1.1  1995/11/28  21:38:27  amiri
     88  * Initial revision
     89  */
     90 
     91 #ifndef _RF__RF_INTERDECLUSTER_H_
     92 #define _RF__RF_INTERDECLUSTER_H_
     93 
     94 int  rf_ConfigureInterDecluster(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr,
     95 	RF_Config_t *cfgPtr);
     96 int rf_GetDefaultNumFloatingReconBuffersInterDecluster(RF_Raid_t *raidPtr);
     97 RF_HeadSepLimit_t rf_GetDefaultHeadSepLimitInterDecluster(RF_Raid_t *raidPtr);
     98 RF_ReconUnitCount_t rf_GetNumSpareRUsInterDecluster(RF_Raid_t *raidPtr);
     99 void rf_MapSectorInterDecluster(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector,
    100 	RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector, int remap);
    101 void rf_MapParityInterDecluster(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector,
    102 	RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector, int remap);
    103 void rf_IdentifyStripeInterDecluster(RF_Raid_t *raidPtr, RF_RaidAddr_t addr,
    104 	RF_RowCol_t **diskids, RF_RowCol_t *outRow);
    105 void rf_MapSIDToPSIDInterDecluster(RF_RaidLayout_t *layoutPtr,
    106 	RF_StripeNum_t stripeID, RF_StripeNum_t *psID,
    107 	RF_ReconUnitNum_t *which_ru);
    108 void rf_RAIDIDagSelect(RF_Raid_t *raidPtr, RF_IoType_t type,
    109 	RF_AccessStripeMap_t *asmap, RF_VoidFuncPtr *createFunc);
    110 
    111 #endif /* !_RF__RF_INTERDECLUSTER_H_ */
    112