1 1.7 andvar /* $NetBSD: rf_evenodd_dagfuncs.h,v 1.7 2024/02/09 22:08:36 andvar Exp $ */ 2 1.1 oster /* 3 1.1 oster * rf_evenodd_dagfuncs.h 4 1.1 oster */ 5 1.1 oster /* 6 1.1 oster * Copyright (c) 1996 Carnegie-Mellon University. 7 1.1 oster * All rights reserved. 8 1.1 oster * 9 1.1 oster * Author: Chang-Ming Wu 10 1.1 oster * 11 1.1 oster * Permission to use, copy, modify and distribute this software and 12 1.1 oster * its documentation is hereby granted, provided that both the copyright 13 1.1 oster * notice and this permission notice appear in all copies of the 14 1.1 oster * software, derivative works or modified versions, and any portions 15 1.1 oster * thereof, and that both notices appear in supporting documentation. 16 1.1 oster * 17 1.1 oster * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 18 1.1 oster * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 19 1.1 oster * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 20 1.1 oster * 21 1.1 oster * Carnegie Mellon requests users of this software to return to 22 1.1 oster * 23 1.1 oster * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 24 1.1 oster * School of Computer Science 25 1.1 oster * Carnegie Mellon University 26 1.1 oster * Pittsburgh PA 15213-3890 27 1.1 oster * 28 1.1 oster * any improvements or extensions that they make and grant Carnegie the 29 1.1 oster * rights to redistribute these changes. 30 1.1 oster */ 31 1.1 oster 32 1.1 oster #ifndef _RF__RF_EVENODD_DAGFUNCS_H_ 33 1.1 oster #define _RF__RF_EVENODD_DAGFUNCS_H_ 34 1.1 oster 35 1.1 oster extern RF_RedFuncs_t rf_EOSmallWriteEFuncs; 36 1.1 oster extern RF_RedFuncs_t rf_EOSmallWritePFuncs; 37 1.1 oster extern RF_RedFuncs_t rf_eoERecoveryFuncs; 38 1.1 oster extern RF_RedFuncs_t rf_eoPRecoveryFuncs; 39 1.1 oster extern RF_RedFuncs_t rf_eoERecoveryFuncs; 40 1.1 oster 41 1.6 christos void rf_RegularPEFunc(RF_DagNode_t * node); 42 1.6 christos void rf_RegularONEFunc(RF_DagNode_t * node); 43 1.6 christos void rf_SimpleONEFunc(RF_DagNode_t * node); 44 1.2 oster void rf_RegularESubroutine(RF_DagNode_t * node, char *ebuf); 45 1.6 christos void rf_RegularEFunc(RF_DagNode_t * node); 46 1.2 oster void rf_DegrESubroutine(RF_DagNode_t * node, char *ebuf); 47 1.6 christos void rf_Degraded_100_EOFunc(RF_DagNode_t * node); 48 1.4 perry void 49 1.2 oster rf_e_EncOneSect(RF_RowCol_t srcLogicCol, char *srcSecbuf, 50 1.2 oster RF_RowCol_t destLogicCol, char *destSecbuf, int bytesPerSector); 51 1.4 perry void 52 1.2 oster rf_e_encToBuf(RF_Raid_t * raidPtr, RF_RowCol_t srcLogicCol, 53 1.2 oster char *srcbuf, RF_RowCol_t destLogicCol, char *destbuf, int numSector); 54 1.6 christos void rf_RecoveryEFunc(RF_DagNode_t * node); 55 1.6 christos void rf_EO_DegradedWriteEFunc(RF_DagNode_t * node); 56 1.4 perry void 57 1.2 oster rf_doubleEOdecode(RF_Raid_t * raidPtr, char **rrdbuf, char **dest, 58 1.2 oster RF_RowCol_t * fcol, char *pbuf, char *ebuf); 59 1.6 christos void rf_EvenOddDoubleRecoveryFunc(RF_DagNode_t * node); 60 1.6 christos void rf_EOWriteDoubleRecoveryFunc(RF_DagNode_t * node); 61 1.1 oster 62 1.1 oster #define rf_EUCol(_layoutPtr_, _addr_ ) \ 63 1.1 oster ( (_addr_)%( (_layoutPtr_)->dataSectorsPerStripe ) )/((_layoutPtr_)->sectorsPerStripeUnit) 64 1.1 oster 65 1.1 oster #define rf_EO_Mod( _int1_, _int2_ ) \ 66 1.1 oster ( ((_int1_) < 0)? (((_int1_)+(_int2_))%(_int2_)) : (_int1_)%(_int2_) ) 67 1.1 oster 68 1.1 oster #define rf_OffsetOfNextEUBoundary(_offset_, sec_per_eu) ((_offset_)/(sec_per_eu) + 1)*(sec_per_eu) 69 1.1 oster 70 1.1 oster #define RF_EO_MATRIX_DIM 17 71 1.1 oster 72 1.1 oster /* 73 1.1 oster * RF_EO_MATRIX_DIM should be a prime number: and "bytesPerSector" should be 74 1.3 perry * dividable by ( RF_EO_MATRIX_DIM - 1) to fully encode and use the space 75 1.7 andvar * in a sector, this number could also be 17. The later case doesn't apply 76 1.1 oster * for disk array larger than 17 columns totally. 77 1.1 oster */ 78 1.1 oster 79 1.2 oster #endif /* !_RF__RF_EVENODD_DAGFUNCS_H_ */ 80
Indexes created Sat Sep 20 22:09:52 GMT 2025