1/* $NetBSD: rf_parityscan.h,v 1.8 2009/11/17 18:54:26 jld Exp $ */
2/*
3 * Copyright (c) 1995 Carnegie-Mellon University.
4 * All rights reserved.
5 *
6 * Author: Mark Holland
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_PARITYSCAN_H_
30#define _RF__RF_PARITYSCAN_H_
31
32#include <dev/raidframe/raidframevar.h>
33
34#include "rf_alloclist.h"
35
36int rf_RewriteParity(RF_Raid_t *);
37int rf_RewriteParityRange(RF_Raid_t *, RF_SectorNum_t, RF_SectorNum_t);
38int rf_VerifyParityBasic(RF_Raid_t *, RF_RaidAddr_t, RF_PhysDiskAddr_t *,
39 int, RF_RaidAccessFlags_t);
40int rf_VerifyParity(RF_Raid_t *, RF_AccessStripeMap_t *, int,
41 RF_RaidAccessFlags_t);
42int rf_TryToRedirectPDA(RF_Raid_t *, RF_PhysDiskAddr_t *, int);
43int rf_VerifyDegrModeWrite(RF_Raid_t *, RF_AccessStripeMapHeader_t *);
44RF_DagHeader_t *rf_MakeSimpleDAG(RF_Raid_t *, int, int, char *,
45 int (*)(RF_DagNode_t *), int (*) (RF_DagNode_t *), const char *,
46 RF_AllocListElem_t *, RF_RaidAccessFlags_t, int);
47
48#define RF_DO_CORRECT_PARITY 1
49#define RF_DONT_CORRECT_PARITY 0
50
51/*
52 * Return vals for VerifyParity operation
53 *
54 * Ordering is important here.
55 */
56#define RF_PARITY_OKAY 0 /* or no parity information */
57#define RF_PARITY_CORRECTED 1
58#define RF_PARITY_BAD 2
59#define RF_PARITY_COULD_NOT_CORRECT 3
60#define RF_PARITY_COULD_NOT_VERIFY 4
61
62#endif /* !_RF__RF_PARITYSCAN_H_ */
63