1 /* $NetBSD: rf_parityscan.h,v 1.1 1998/11/13 04:20:32 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 /* : 30 * Log: rf_parityscan.h,v 31 * Revision 1.14 1996/07/05 18:01:12 jimz 32 * don't make parity protos ndef KERNEL 33 * 34 * Revision 1.13 1996/06/20 17:41:43 jimz 35 * change decl for VerifyParity 36 * 37 * Revision 1.12 1996/06/20 15:38:39 jimz 38 * renumber parityscan return codes 39 * 40 * Revision 1.11 1996/06/19 22:23:01 jimz 41 * parity verification is now a layout-configurable thing 42 * not all layouts currently support it (correctly, anyway) 43 * 44 * Revision 1.10 1996/06/09 02:36:46 jimz 45 * lots of little crufty cleanup- fixup whitespace 46 * issues, comment #ifdefs, improve typing in some 47 * places (esp size-related) 48 * 49 * Revision 1.9 1996/06/07 21:33:04 jimz 50 * begin using consistent types for sector numbers, 51 * stripe numbers, row+col numbers, recon unit numbers 52 * 53 * Revision 1.8 1996/06/02 17:31:48 jimz 54 * Moved a lot of global stuff into array structure, where it belongs. 55 * Fixed up paritylogging, pss modules in this manner. Some general 56 * code cleanup. Removed lots of dead code, some dead files. 57 * 58 * Revision 1.7 1996/05/31 22:26:54 jimz 59 * fix a lot of mapping problems, memory allocation problems 60 * found some weird lock issues, fixed 'em 61 * more code cleanup 62 * 63 * Revision 1.6 1996/05/24 22:17:04 jimz 64 * continue code + namespace cleanup 65 * typed a bunch of flags 66 * 67 * Revision 1.5 1996/05/24 04:28:55 jimz 68 * release cleanup ckpt 69 * 70 * Revision 1.4 1996/05/23 21:46:35 jimz 71 * checkpoint in code cleanup (release prep) 72 * lots of types, function names have been fixed 73 * 74 * Revision 1.3 1996/05/18 19:51:34 jimz 75 * major code cleanup- fix syntax, make some types consistent, 76 * add prototypes, clean out dead code, et cetera 77 * 78 * Revision 1.2 1995/11/30 16:20:46 wvcii 79 * added copyright info 80 * 81 */ 82 83 #ifndef _RF__RF_PARITYSCAN_H_ 84 #define _RF__RF_PARITYSCAN_H_ 85 86 #include "rf_types.h" 87 #include "rf_alloclist.h" 88 89 int rf_RewriteParity(RF_Raid_t *raidPtr); 90 int rf_VerifyParityBasic(RF_Raid_t *raidPtr, RF_RaidAddr_t raidAddr, 91 RF_PhysDiskAddr_t *parityPDA, int correct_it, RF_RaidAccessFlags_t flags); 92 int rf_VerifyParity(RF_Raid_t *raidPtr, RF_AccessStripeMap_t *stripeMap, 93 int correct_it, RF_RaidAccessFlags_t flags); 94 int rf_TryToRedirectPDA(RF_Raid_t *raidPtr, RF_PhysDiskAddr_t *pda, int parity); 95 int rf_VerifyDegrModeWrite(RF_Raid_t *raidPtr, RF_AccessStripeMapHeader_t *asmh); 96 RF_DagHeader_t *rf_MakeSimpleDAG(RF_Raid_t *raidPtr, int nNodes, 97 int bytesPerSU, char *databuf, 98 int (*doFunc)(RF_DagNode_t *), 99 int (*undoFunc)(RF_DagNode_t *), 100 char *name, RF_AllocListElem_t *alloclist, 101 RF_RaidAccessFlags_t flags, int priority); 102 103 #define RF_DO_CORRECT_PARITY 1 104 #define RF_DONT_CORRECT_PARITY 0 105 106 /* 107 * Return vals for VerifyParity operation 108 * 109 * Ordering is important here. 110 */ 111 #define RF_PARITY_OKAY 0 /* or no parity information */ 112 #define RF_PARITY_CORRECTED 1 113 #define RF_PARITY_BAD 2 114 #define RF_PARITY_COULD_NOT_CORRECT 3 115 #define RF_PARITY_COULD_NOT_VERIFY 4 116 117 #endif /* !_RF__RF_PARITYSCAN_H_ */ 118