1/* $NetBSD: rf_raid4.h,v 1.6 2005/12/11 12:23:37 christos Exp $ */
2/*
3 * Copyright (c) 1995 Carnegie-Mellon University.
4 * All rights reserved.
5 *
6 * Author: Rachad Youssef
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_raid4.h header file for RAID Level 4 */
30
31#ifndef _RF__RF_RAID4_H_
32#define _RF__RF_RAID4_H_
33
34int
35rf_ConfigureRAID4(RF_ShutdownList_t ** listp, RF_Raid_t * raidPtr,
36 RF_Config_t * cfgPtr);
37int rf_GetDefaultNumFloatingReconBuffersRAID4(RF_Raid_t * raidPtr);
38RF_HeadSepLimit_t rf_GetDefaultHeadSepLimitRAID4(RF_Raid_t * raidPtr);
39void
40rf_MapSectorRAID4(RF_Raid_t * raidPtr, RF_RaidAddr_t raidSector,
41 RF_RowCol_t * col, RF_SectorNum_t * diskSector, int remap);
42void
43rf_MapParityRAID4(RF_Raid_t * raidPtr, RF_RaidAddr_t raidSector,
44 RF_RowCol_t * col, RF_SectorNum_t * diskSector, int remap);
45void
46rf_IdentifyStripeRAID4(RF_Raid_t * raidPtr, RF_RaidAddr_t addr,
47 RF_RowCol_t ** diskids);
48void
49rf_MapSIDToPSIDRAID4(RF_RaidLayout_t * layoutPtr,
50 RF_StripeNum_t stripeID, RF_StripeNum_t * psID,
51 RF_ReconUnitNum_t * which_ru);
52void
53rf_RAID4DagSelect(RF_Raid_t * raidPtr, RF_IoType_t type,
54 RF_AccessStripeMap_t * asmap, RF_VoidFuncPtr * createFunc);
55
56#endif /* !_RF__RF_RAID4_H_ */
57