1 /* $NetBSD: rf_raid5.h,v 1.4 2003/12/29 02:38:18 oster 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_ */
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