1 /* $OpenBSD: rf_pq.h,v 1.3 2002/12/16 07:01:04 tdeval Exp $ */
2 /* $NetBSD: rf_pq.h,v 1.3 1999/02/05 00:06:15 oster Exp $ */
3
4 /*
5 * rf_pq.h
6 */
7 /*
8 * Copyright (c) 1995 Carnegie-Mellon University.
9 * All rights reserved.
10 *
11 * Author: Daniel Stodolsky
12 *
13 * Permission to use, copy, modify and distribute this software and
14 * its documentation is hereby granted, provided that both the copyright
15 * notice and this permission notice appear in all copies of the
16 * software, derivative works or modified versions, and any portions
17 * thereof, and that both notices appear in supporting documentation.
18 *
19 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
20 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
21 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
22 *
23 * Carnegie Mellon requests users of this software to return to
24 *
25 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
26 * School of Computer Science
27 * Carnegie Mellon University
28 * Pittsburgh PA 15213-3890
29 *
30 * any improvements or extensions that they make and grant Carnegie the
31 * rights to redistribute these changes.
32 */
33
34 #ifndef _RF__RF_PQ_H_
35 #define _RF__RF_PQ_H_
36
37 #include "rf_archs.h"
38
39 extern RF_RedFuncs_t rf_pFuncs;
40 extern RF_RedFuncs_t rf_pRecoveryFuncs;
41
42 int rf_RegularONPFunc(RF_DagNode_t *);
43 int rf_SimpleONPFunc(RF_DagNode_t *);
44 int rf_RecoveryPFunc(RF_DagNode_t *);
45 int rf_RegularPFunc(RF_DagNode_t *);
46
47 #if (RF_INCLUDE_DECL_PQ > 0) || (RF_INCLUDE_RAID6 > 0)
48
49 extern RF_RedFuncs_t rf_qFuncs;
50 extern RF_RedFuncs_t rf_qRecoveryFuncs;
51 extern RF_RedFuncs_t rf_pqRecoveryFuncs;
52
53 void rf_PQDagSelect(RF_Raid_t *, RF_IoType_t, RF_AccessStripeMap_t *,
54 RF_VoidFuncPtr *);
55 RF_CREATE_DAG_FUNC_DECL(rf_PQCreateLargeWriteDAG);
56 int rf_RegularONQFunc(RF_DagNode_t *);
57 int rf_SimpleONQFunc(RF_DagNode_t *);
58 RF_CREATE_DAG_FUNC_DECL(rf_PQCreateSmallWriteDAG);
59 int rf_RegularPQFunc(RF_DagNode_t *);
60 int rf_RegularQFunc(RF_DagNode_t *);
61 void rf_Degraded_100_PQFunc(RF_DagNode_t *);
62 int rf_RecoveryQFunc(RF_DagNode_t *);
63 int rf_RecoveryPQFunc(RF_DagNode_t *);
64 void rf_PQ_DegradedWriteQFunc(RF_DagNode_t *);
65 void rf_IncQ(unsigned long *, unsigned long *, unsigned, unsigned);
66 void rf_PQ_recover(unsigned long *, unsigned long *, unsigned long *,
67 unsigned long *, unsigned, unsigned, unsigned);
68
69 #endif /* (RF_INCLUDE_DECL_PQ > 0) || (RF_INCLUDE_RAID6 > 0) */
70
71 #endif /* !_RF__RF_PQ_H_ */