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 | |