1 /* $NetBSD: rf_parityscan.h,v 1.7 2005/12/11 12:23:37 christos 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_VerifyParityBasic(RF_Raid_t *, RF_RaidAddr_t, RF_PhysDiskAddr_t *, 38 int, RF_RaidAccessFlags_t); 39 int rf_VerifyParity(RF_Raid_t *, RF_AccessStripeMap_t *, int, 40 RF_RaidAccessFlags_t); 41 int rf_TryToRedirectPDA(RF_Raid_t *, RF_PhysDiskAddr_t *, int); 42 int rf_VerifyDegrModeWrite(RF_Raid_t *, RF_AccessStripeMapHeader_t *); 43 RF_DagHeader_t *rf_MakeSimpleDAG(RF_Raid_t *, int, int, char *, 44 int (*)(RF_DagNode_t *), int (*) (RF_DagNode_t *), const char *, 45 RF_AllocListElem_t *, RF_RaidAccessFlags_t, int); 46 47 #define RF_DO_CORRECT_PARITY 1 48 #define RF_DONT_CORRECT_PARITY 0 49 50 /* 51 * Return vals for VerifyParity operation 52 * 53 * Ordering is important here. 54 */ 55 #define RF_PARITY_OKAY 0 /* or no parity information */ 56 #define RF_PARITY_CORRECTED 1 57 #define RF_PARITY_BAD 2 58 #define RF_PARITY_COULD_NOT_CORRECT 3 59 #define RF_PARITY_COULD_NOT_VERIFY 4 60 61 #endif /* !_RF__RF_PARITYSCAN_H_ */ 62