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Diffstat (limited to 'sys/dev/raidframe/rf_raid5.h')
| -rw-r--r-- | sys/dev/raidframe/rf_raid5.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_raid5.h b/sys/dev/raidframe/rf_raid5.h new file mode 100644 index 00000000000..a6ffc971ca4 --- /dev/null +++ b/sys/dev/raidframe/rf_raid5.h @@ -0,0 +1,113 @@ +/* $OpenBSD: rf_raid5.h,v 1.1 1999/01/11 14:29:43 niklas Exp $ */ +/* $NetBSD: rf_raid5.h,v 1.1 1998/11/13 04:20:33 oster Exp $ */ +/* + * Copyright (c) 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Mark Holland + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +/* rf_raid5.h - header file for RAID Level 5 */ + +/* + * : + * Log: rf_raid5.h,v + * Revision 1.15 1996/07/27 23:36:08 jimz + * Solaris port of simulator + * + * Revision 1.14 1996/07/13 00:00:59 jimz + * sanitized generalized reconstruction architecture + * cleaned up head sep, rbuf problems + * + * Revision 1.13 1996/06/10 11:55:47 jimz + * Straightened out some per-array/not-per-array distinctions, fixed + * a couple bugs related to confusion. Added shutdown lists. Removed + * layout shutdown function (now subsumed by shutdown lists). + * + * Revision 1.12 1996/06/07 22:26:27 jimz + * type-ify which_ru (RF_ReconUnitNum_t) + * + * Revision 1.11 1996/06/07 21:33:04 jimz + * begin using consistent types for sector numbers, + * stripe numbers, row+col numbers, recon unit numbers + * + * Revision 1.10 1996/06/03 23:28:26 jimz + * more bugfixes + * check in tree to sync for IPDS runs with current bugfixes + * there still may be a problem with threads in the script test + * getting I/Os stuck- not trivially reproducible (runs ~50 times + * in a row without getting stuck) + * + * Revision 1.9 1996/05/31 22:26:54 jimz + * fix a lot of mapping problems, memory allocation problems + * found some weird lock issues, fixed 'em + * more code cleanup + * + * Revision 1.8 1996/05/27 18:56:37 jimz + * more code cleanup + * better typing + * compiles in all 3 environments + * + * Revision 1.7 1996/05/24 01:59:45 jimz + * another checkpoint in code cleanup for release + * time to sync kernel tree + * + * Revision 1.6 1996/05/18 19:51:34 jimz + * major code cleanup- fix syntax, make some types consistent, + * add prototypes, clean out dead code, et cetera + * + * Revision 1.5 1995/12/06 15:04:35 root + * added copyright info + * + * Revision 1.4 1995/11/17 19:09:08 wvcii + * added prototyping to MapParity + * + * Revision 1.3 1995/11/07 15:25:40 wvcii + * changed RAIDFiveDagSelect prototype + * function no longer generates numHdrSucc, numTermAnt + * + * Revision 1.2 1995/06/23 13:37:53 robby + * updeated to prototypes in rf_layout.h + * + */ + +#ifndef _RF__RF_RAID5_H_ +#define _RF__RF_RAID5_H_ + +int rf_ConfigureRAID5(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr, + RF_Config_t *cfgPtr); +int rf_GetDefaultNumFloatingReconBuffersRAID5(RF_Raid_t *raidPtr); +RF_HeadSepLimit_t rf_GetDefaultHeadSepLimitRAID5(RF_Raid_t *raidPtr); +void rf_MapSectorRAID5(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector, + RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector, int remap); +void rf_MapParityRAID5(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector, + RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector, int remap); +void rf_IdentifyStripeRAID5(RF_Raid_t *raidPtr, RF_RaidAddr_t addr, + RF_RowCol_t **diskids, RF_RowCol_t *outRow); +void rf_MapSIDToPSIDRAID5(RF_RaidLayout_t *layoutPtr, + RF_StripeNum_t stripeID, RF_StripeNum_t *psID, + RF_ReconUnitNum_t *which_ru); +void rf_RaidFiveDagSelect(RF_Raid_t *raidPtr, RF_IoType_t type, + RF_AccessStripeMap_t *asmap, RF_VoidFuncPtr *createFunc); + +#endif /* !_RF__RF_RAID5_H_ */ |