1/* $NetBSD: rf_dagdegrd.h,v 1.8 2006/04/26 17:08:48 oster Exp $ */
2/*
3 * Copyright (c) 1995 Carnegie-Mellon University.
4 * All rights reserved.
5 *
6 * Author: Mark Holland, Daniel Stodolsky, William V. Courtright II
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#ifndef _RF__RF_DAGDEGRD_H_
30#define _RF__RF_DAGDEGRD_H_
31
32#include <dev/raidframe/raidframevar.h>
33
34/* degraded read DAG creation routines */
35void
36rf_CreateRaidFiveDegradedReadDAG(RF_Raid_t * raidPtr,
37 RF_AccessStripeMap_t * asmap, RF_DagHeader_t * dag_h, void *bp,
38 RF_RaidAccessFlags_t flags, RF_AllocListElem_t * allocList);
39void
40rf_CreateRaidOneDegradedReadDAG(RF_Raid_t * raidPtr,
41 RF_AccessStripeMap_t * asmap, RF_DagHeader_t * dag_h, void *bp,
42 RF_RaidAccessFlags_t flags, RF_AllocListElem_t * allocList);
43void
44rf_CreateDegradedReadDAG(RF_Raid_t * raidPtr,
45 RF_AccessStripeMap_t * asmap, RF_DagHeader_t * dag_h, void *bp,
46 RF_RaidAccessFlags_t flags, RF_AllocListElem_t * allocList,
47 const RF_RedFuncs_t * recFunc);
48void
49rf_CreateRaidCDegradedReadDAG(RF_Raid_t * raidPtr,
50 RF_AccessStripeMap_t * asmap, RF_DagHeader_t * dag_h, void *bp,
51 RF_RaidAccessFlags_t flags, RF_AllocListElem_t * allocList);
52void
53rf_DD_GenerateFailedAccessASMs(RF_Raid_t * raidPtr,
54 RF_AccessStripeMap_t * asmap, RF_PhysDiskAddr_t ** pdap,
55 int *nNodep, RF_PhysDiskAddr_t ** pqpdap, int *nPQNodep,
56 RF_AllocListElem_t * allocList);
57void
58rf_DoubleDegRead(RF_Raid_t * raidPtr, RF_AccessStripeMap_t * asmap,
59 RF_DagHeader_t * dag_h, void *bp, RF_RaidAccessFlags_t flags,
60 RF_AllocListElem_t * allocList, const char *redundantReadNodeName,
61 const char *recoveryNodeName, int (*recovFunc) (RF_DagNode_t *));
62
63#endif /* !_RF__RF_DAGDEGRD_H_ */
64