134 lines
4.7 KiB
C
134 lines
4.7 KiB
C
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/* $NetBSD: rf_map.h,v 1.1 1998/11/13 04:20:31 oster Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Mark Holland
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/* rf_map.h */
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/* :
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* Log: rf_map.h,v
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* Revision 1.9 1996/07/22 19:52:16 jimz
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* switched node params to RF_DagParam_t, a union of
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* a 64-bit int and a void *, for better portability
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* attempted hpux port, but failed partway through for
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* lack of a single C compiler capable of compiling all
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* source files
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*
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* Revision 1.8 1996/06/10 11:55:47 jimz
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* Straightened out some per-array/not-per-array distinctions, fixed
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* a couple bugs related to confusion. Added shutdown lists. Removed
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* layout shutdown function (now subsumed by shutdown lists).
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*
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* Revision 1.7 1996/06/07 21:33:04 jimz
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* begin using consistent types for sector numbers,
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* stripe numbers, row+col numbers, recon unit numbers
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*
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* Revision 1.6 1996/05/31 22:26:54 jimz
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* fix a lot of mapping problems, memory allocation problems
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* found some weird lock issues, fixed 'em
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* more code cleanup
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*
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* Revision 1.5 1996/05/30 11:29:41 jimz
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* Numerous bug fixes. Stripe lock release code disagreed with the taking code
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* about when stripes should be locked (I made it consistent: no parity, no lock)
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* There was a lot of extra serialization of I/Os which I've removed- a lot of
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* it was to calculate values for the cache code, which is no longer with us.
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* More types, function, macro cleanup. Added code to properly quiesce the array
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* on shutdown. Made a lot of stuff array-specific which was (bogusly) general
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* before. Fixed memory allocation, freeing bugs.
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*
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* Revision 1.4 1996/05/23 21:46:35 jimz
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* checkpoint in code cleanup (release prep)
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* lots of types, function names have been fixed
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*
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* Revision 1.3 1996/05/18 19:51:34 jimz
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* major code cleanup- fix syntax, make some types consistent,
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* add prototypes, clean out dead code, et cetera
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*
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* Revision 1.2 1995/12/01 19:25:14 root
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* added copyright info
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*
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*/
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#ifndef _RF__RF_MAP_H_
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#define _RF__RF_MAP_H_
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#include "rf_types.h"
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#include "rf_alloclist.h"
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#include "rf_raid.h"
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/* mapping structure allocation and free routines */
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RF_AccessStripeMapHeader_t *rf_MapAccess(RF_Raid_t *raidPtr,
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RF_RaidAddr_t raidAddress, RF_SectorCount_t numBlocks,
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caddr_t buffer, int remap);
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void rf_MarkFailuresInASMList(RF_Raid_t *raidPtr,
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RF_AccessStripeMapHeader_t *asm_h);
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RF_AccessStripeMap_t *rf_DuplicateASM(RF_AccessStripeMap_t *asmap);
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RF_PhysDiskAddr_t *rf_DuplicatePDA(RF_PhysDiskAddr_t *pda);
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int rf_ConfigureMapModule(RF_ShutdownList_t **listp);
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RF_AccessStripeMapHeader_t *rf_AllocAccessStripeMapHeader(void);
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void rf_FreeAccessStripeMapHeader(RF_AccessStripeMapHeader_t *p);
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RF_PhysDiskAddr_t *rf_AllocPhysDiskAddr(void);
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RF_PhysDiskAddr_t *rf_AllocPDAList(int count);
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void rf_FreePhysDiskAddr(RF_PhysDiskAddr_t *p);
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RF_AccessStripeMap_t *rf_AllocAccessStripeMapComponent(void);
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RF_AccessStripeMap_t *rf_AllocASMList(int count);
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void rf_FreeAccessStripeMapComponent(RF_AccessStripeMap_t *p);
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void rf_FreeAccessStripeMap(RF_AccessStripeMapHeader_t *hdr);
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int rf_CheckStripeForFailures(RF_Raid_t *raidPtr, RF_AccessStripeMap_t *asmap);
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int rf_NumFailedDataUnitsInStripe(RF_Raid_t *raidPtr, RF_AccessStripeMap_t *asmap);
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void rf_PrintAccessStripeMap(RF_AccessStripeMapHeader_t *asm_h);
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void rf_PrintFullAccessStripeMap(RF_AccessStripeMapHeader_t *asm_h, int prbuf);
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void rf_PrintRaidAddressInfo(RF_Raid_t *raidPtr, RF_RaidAddr_t raidAddr,
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RF_SectorCount_t numBlocks);
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void rf_ASMParityAdjust(RF_PhysDiskAddr_t *toAdjust,
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RF_StripeNum_t startAddrWithinStripe, RF_SectorNum_t endAddress,
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RF_RaidLayout_t *layoutPtr, RF_AccessStripeMap_t *asm_p);
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void rf_ASMCheckStatus(RF_Raid_t *raidPtr, RF_PhysDiskAddr_t *pda_p,
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RF_AccessStripeMap_t *asm_p, RF_RaidDisk_t **disks, int parity);
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#endif /* !_RF__RF_MAP_H_ */
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