| 1 | /* $NetBSD: rf_parityscan.h,v 1.8 2009/11/17 18:54:26 jld 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 | #ifndef _RF__RF_PARITYSCAN_H_ |
| 30 | #define _RF__RF_PARITYSCAN_H_ |
| 31 | |
| 32 | #include <dev/raidframe/raidframevar.h> |
| 33 | |
| 34 | #include "rf_alloclist.h" |
| 35 | |
| 36 | int rf_RewriteParity(RF_Raid_t *); |
| 37 | int rf_RewriteParityRange(RF_Raid_t *, RF_SectorNum_t, RF_SectorNum_t); |
| 38 | int rf_VerifyParityBasic(RF_Raid_t *, RF_RaidAddr_t, RF_PhysDiskAddr_t *, |
| 39 | int, RF_RaidAccessFlags_t); |
| 40 | int rf_VerifyParity(RF_Raid_t *, RF_AccessStripeMap_t *, int, |
| 41 | RF_RaidAccessFlags_t); |
| 42 | int rf_TryToRedirectPDA(RF_Raid_t *, RF_PhysDiskAddr_t *, int); |
| 43 | int rf_VerifyDegrModeWrite(RF_Raid_t *, RF_AccessStripeMapHeader_t *); |
| 44 | RF_DagHeader_t *rf_MakeSimpleDAG(RF_Raid_t *, int, int, char *, |
| 45 | int (*)(RF_DagNode_t *), int (*) (RF_DagNode_t *), const char *, |
| 46 | RF_AllocListElem_t *, RF_RaidAccessFlags_t, int); |
| 47 | |
| 48 | #define RF_DO_CORRECT_PARITY 1 |
| 49 | #define RF_DONT_CORRECT_PARITY 0 |
| 50 | |
| 51 | /* |
| 52 | * Return vals for VerifyParity operation |
| 53 | * |
| 54 | * Ordering is important here. |
| 55 | */ |
| 56 | #define RF_PARITY_OKAY 0 /* or no parity information */ |
| 57 | #define RF_PARITY_CORRECTED 1 |
| 58 | #define RF_PARITY_BAD 2 |
| 59 | #define RF_PARITY_COULD_NOT_CORRECT 3 |
| 60 | #define RF_PARITY_COULD_NOT_VERIFY 4 |
| 61 | |
| 62 | #endif /* !_RF__RF_PARITYSCAN_H_ */ |
| 63 | |