rf_map.h revision 1.3 
1/*	$NetBSD: rf_map.h,v 1.3 1999/02/05 00:06:12 oster 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/* rf_map.h */
30
31#ifndef _RF__RF_MAP_H_
32#define _RF__RF_MAP_H_
33
34#include "rf_types.h"
35#include "rf_alloclist.h"
36#include "rf_raid.h"
37
38/* mapping structure allocation and free routines */
39RF_AccessStripeMapHeader_t *
40rf_MapAccess(RF_Raid_t * raidPtr,
41    RF_RaidAddr_t raidAddress, RF_SectorCount_t numBlocks,
42    caddr_t buffer, int remap);
43
44void
45rf_MarkFailuresInASMList(RF_Raid_t * raidPtr,
46    RF_AccessStripeMapHeader_t * asm_h);
47
48RF_AccessStripeMap_t *rf_DuplicateASM(RF_AccessStripeMap_t * asmap);
49
50RF_PhysDiskAddr_t *rf_DuplicatePDA(RF_PhysDiskAddr_t * pda);
51
52int     rf_ConfigureMapModule(RF_ShutdownList_t ** listp);
53
54RF_AccessStripeMapHeader_t *rf_AllocAccessStripeMapHeader(void);
55
56void    rf_FreeAccessStripeMapHeader(RF_AccessStripeMapHeader_t * p);
57
58RF_PhysDiskAddr_t *rf_AllocPhysDiskAddr(void);
59
60RF_PhysDiskAddr_t *rf_AllocPDAList(int count);
61
62void    rf_FreePhysDiskAddr(RF_PhysDiskAddr_t * p);
63
64RF_AccessStripeMap_t *rf_AllocAccessStripeMapComponent(void);
65
66RF_AccessStripeMap_t *rf_AllocASMList(int count);
67
68void    rf_FreeAccessStripeMapComponent(RF_AccessStripeMap_t * p);
69
70void    rf_FreeAccessStripeMap(RF_AccessStripeMapHeader_t * hdr);
71
72int     rf_CheckStripeForFailures(RF_Raid_t * raidPtr, RF_AccessStripeMap_t * asmap);
73
74int     rf_NumFailedDataUnitsInStripe(RF_Raid_t * raidPtr, RF_AccessStripeMap_t * asmap);
75
76void    rf_PrintAccessStripeMap(RF_AccessStripeMapHeader_t * asm_h);
77
78void    rf_PrintFullAccessStripeMap(RF_AccessStripeMapHeader_t * asm_h, int prbuf);
79
80void
81rf_PrintRaidAddressInfo(RF_Raid_t * raidPtr, RF_RaidAddr_t raidAddr,
82    RF_SectorCount_t numBlocks);
83
84void
85rf_ASMParityAdjust(RF_PhysDiskAddr_t * toAdjust,
86    RF_StripeNum_t startAddrWithinStripe, RF_SectorNum_t endAddress,
87    RF_RaidLayout_t * layoutPtr, RF_AccessStripeMap_t * asm_p);
88
89void
90rf_ASMCheckStatus(RF_Raid_t * raidPtr, RF_PhysDiskAddr_t * pda_p,
91    RF_AccessStripeMap_t * asm_p, RF_RaidDisk_t ** disks, int parity);
92
93#endif				/* !_RF__RF_MAP_H_ */
94