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/* $OpenBSD: rf_map.h,v 1.1 1999/01/11 14:29:29 niklas Exp $ */
/* $NetBSD: rf_map.h,v 1.1 1998/11/13 04:20:31 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Mark Holland
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/* rf_map.h */
/* :
* Log: rf_map.h,v
* Revision 1.9 1996/07/22 19:52:16 jimz
* switched node params to RF_DagParam_t, a union of
* a 64-bit int and a void *, for better portability
* attempted hpux port, but failed partway through for
* lack of a single C compiler capable of compiling all
* source files
*
* Revision 1.8 1996/06/10 11:55:47 jimz
* Straightened out some per-array/not-per-array distinctions, fixed
* a couple bugs related to confusion. Added shutdown lists. Removed
* layout shutdown function (now subsumed by shutdown lists).
*
* Revision 1.7 1996/06/07 21:33:04 jimz
* begin using consistent types for sector numbers,
* stripe numbers, row+col numbers, recon unit numbers
*
* Revision 1.6 1996/05/31 22:26:54 jimz
* fix a lot of mapping problems, memory allocation problems
* found some weird lock issues, fixed 'em
* more code cleanup
*
* Revision 1.5 1996/05/30 11:29:41 jimz
* Numerous bug fixes. Stripe lock release code disagreed with the taking code
* about when stripes should be locked (I made it consistent: no parity, no lock)
* There was a lot of extra serialization of I/Os which I've removed- a lot of
* it was to calculate values for the cache code, which is no longer with us.
* More types, function, macro cleanup. Added code to properly quiesce the array
* on shutdown. Made a lot of stuff array-specific which was (bogusly) general
* before. Fixed memory allocation, freeing bugs.
*
* Revision 1.4 1996/05/23 21:46:35 jimz
* checkpoint in code cleanup (release prep)
* lots of types, function names have been fixed
*
* Revision 1.3 1996/05/18 19:51:34 jimz
* major code cleanup- fix syntax, make some types consistent,
* add prototypes, clean out dead code, et cetera
*
* Revision 1.2 1995/12/01 19:25:14 root
* added copyright info
*
*/
#ifndef _RF__RF_MAP_H_
#define _RF__RF_MAP_H_
#include "rf_types.h"
#include "rf_alloclist.h"
#include "rf_raid.h"
/* mapping structure allocation and free routines */
RF_AccessStripeMapHeader_t *rf_MapAccess(RF_Raid_t *raidPtr,
RF_RaidAddr_t raidAddress, RF_SectorCount_t numBlocks,
caddr_t buffer, int remap);
void rf_MarkFailuresInASMList(RF_Raid_t *raidPtr,
RF_AccessStripeMapHeader_t *asm_h);
RF_AccessStripeMap_t *rf_DuplicateASM(RF_AccessStripeMap_t *asmap);
RF_PhysDiskAddr_t *rf_DuplicatePDA(RF_PhysDiskAddr_t *pda);
int rf_ConfigureMapModule(RF_ShutdownList_t **listp);
RF_AccessStripeMapHeader_t *rf_AllocAccessStripeMapHeader(void);
void rf_FreeAccessStripeMapHeader(RF_AccessStripeMapHeader_t *p);
RF_PhysDiskAddr_t *rf_AllocPhysDiskAddr(void);
RF_PhysDiskAddr_t *rf_AllocPDAList(int count);
void rf_FreePhysDiskAddr(RF_PhysDiskAddr_t *p);
RF_AccessStripeMap_t *rf_AllocAccessStripeMapComponent(void);
RF_AccessStripeMap_t *rf_AllocASMList(int count);
void rf_FreeAccessStripeMapComponent(RF_AccessStripeMap_t *p);
void rf_FreeAccessStripeMap(RF_AccessStripeMapHeader_t *hdr);
int rf_CheckStripeForFailures(RF_Raid_t *raidPtr, RF_AccessStripeMap_t *asmap);
int rf_NumFailedDataUnitsInStripe(RF_Raid_t *raidPtr, RF_AccessStripeMap_t *asmap);
void rf_PrintAccessStripeMap(RF_AccessStripeMapHeader_t *asm_h);
void rf_PrintFullAccessStripeMap(RF_AccessStripeMapHeader_t *asm_h, int prbuf);
void rf_PrintRaidAddressInfo(RF_Raid_t *raidPtr, RF_RaidAddr_t raidAddr,
RF_SectorCount_t numBlocks);
void rf_ASMParityAdjust(RF_PhysDiskAddr_t *toAdjust,
RF_StripeNum_t startAddrWithinStripe, RF_SectorNum_t endAddress,
RF_RaidLayout_t *layoutPtr, RF_AccessStripeMap_t *asm_p);
void rf_ASMCheckStatus(RF_Raid_t *raidPtr, RF_PhysDiskAddr_t *pda_p,
RF_AccessStripeMap_t *asm_p, RF_RaidDisk_t **disks, int parity);
#endif /* !_RF__RF_MAP_H_ */
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