| 1 | /* $NetBSD: rf_pq.h,v 1.5 2005/12/11 12:23:37 christos Exp $ */ |
| 2 | /* |
| 3 | * rf_pq.h |
| 4 | */ |
| 5 | /* |
| 6 | * Copyright (c) 1995 Carnegie-Mellon University. |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * Author: Daniel Stodolsky |
| 10 | * |
| 11 | * Permission to use, copy, modify and distribute this software and |
| 12 | * its documentation is hereby granted, provided that both the copyright |
| 13 | * notice and this permission notice appear in all copies of the |
| 14 | * software, derivative works or modified versions, and any portions |
| 15 | * thereof, and that both notices appear in supporting documentation. |
| 16 | * |
| 17 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
| 18 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND |
| 19 | * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| 20 | * |
| 21 | * Carnegie Mellon requests users of this software to return to |
| 22 | * |
| 23 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| 24 | * School of Computer Science |
| 25 | * Carnegie Mellon University |
| 26 | * Pittsburgh PA 15213-3890 |
| 27 | * |
| 28 | * any improvements or extensions that they make and grant Carnegie the |
| 29 | * rights to redistribute these changes. |
| 30 | */ |
| 31 | |
| 32 | #ifndef _RF__RF_PQ_H_ |
| 33 | #define _RF__RF_PQ_H_ |
| 34 | |
| 35 | #include "rf_archs.h" |
| 36 | |
| 37 | extern RF_RedFuncs_t rf_pFuncs; |
| 38 | extern RF_RedFuncs_t rf_pRecoveryFuncs; |
| 39 | |
| 40 | int rf_RegularONPFunc(RF_DagNode_t * node); |
| 41 | int rf_SimpleONPFunc(RF_DagNode_t * node); |
| 42 | int rf_RecoveryPFunc(RF_DagNode_t * node); |
| 43 | int rf_RegularPFunc(RF_DagNode_t * node); |
| 44 | |
| 45 | #if (RF_INCLUDE_DECL_PQ > 0) || (RF_INCLUDE_RAID6 > 0) |
| 46 | |
| 47 | extern RF_RedFuncs_t rf_qFuncs; |
| 48 | extern RF_RedFuncs_t rf_qRecoveryFuncs; |
| 49 | extern RF_RedFuncs_t rf_pqRecoveryFuncs; |
| 50 | |
| 51 | void |
| 52 | rf_PQDagSelect(RF_Raid_t * raidPtr, RF_IoType_t type, |
| 53 | RF_AccessStripeMap_t * asmap, RF_VoidFuncPtr * createFunc); |
| 54 | RF_CREATE_DAG_FUNC_DECL(rf_PQCreateLargeWriteDAG); |
| 55 | int rf_RegularONQFunc(RF_DagNode_t * node); |
| 56 | int rf_SimpleONQFunc(RF_DagNode_t * node); |
| 57 | RF_CREATE_DAG_FUNC_DECL(rf_PQCreateSmallWriteDAG); |
| 58 | int rf_RegularPQFunc(RF_DagNode_t * node); |
| 59 | int rf_RegularQFunc(RF_DagNode_t * node); |
| 60 | void rf_Degraded_100_PQFunc(RF_DagNode_t * node); |
| 61 | int rf_RecoveryQFunc(RF_DagNode_t * node); |
| 62 | int rf_RecoveryPQFunc(RF_DagNode_t * node); |
| 63 | void rf_PQ_DegradedWriteQFunc(RF_DagNode_t * node); |
| 64 | void |
| 65 | rf_IncQ(unsigned long *dest, unsigned long *buf, unsigned length, |
| 66 | unsigned coeff); |
| 67 | void |
| 68 | rf_PQ_recover(unsigned long *pbuf, unsigned long *qbuf, unsigned long *abuf, |
| 69 | unsigned long *bbuf, unsigned length, unsigned coeff_a, unsigned coeff_b); |
| 70 | |
| 71 | #endif /* (RF_INCLUDE_DECL_PQ > 0) || |
| 72 | * (RF_INCLUDE_RAID6 > 0) */ |
| 73 | |
| 74 | #endif /* !_RF__RF_PQ_H_ */ |
| 75 | |