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rf_map.h revision 1.4 
      1 /*	$NetBSD: rf_map.h,v 1.4 2001/10/04 15:58:54 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 (at) 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 <dev/raidframe/raidframevar.h>
     35 
     36 #include "rf_alloclist.h"
     37 #include "rf_raid.h"
     38 
     39 /* mapping structure allocation and free routines */
     40 RF_AccessStripeMapHeader_t *
     41 rf_MapAccess(RF_Raid_t * raidPtr,
     42     RF_RaidAddr_t raidAddress, RF_SectorCount_t numBlocks,
     43     caddr_t buffer, int remap);
     44 
     45 void
     46 rf_MarkFailuresInASMList(RF_Raid_t * raidPtr,
     47     RF_AccessStripeMapHeader_t * asm_h);
     48 
     49 RF_AccessStripeMap_t *rf_DuplicateASM(RF_AccessStripeMap_t * asmap);
     50 
     51 RF_PhysDiskAddr_t *rf_DuplicatePDA(RF_PhysDiskAddr_t * pda);
     52 
     53 int     rf_ConfigureMapModule(RF_ShutdownList_t ** listp);
     54 
     55 RF_AccessStripeMapHeader_t *rf_AllocAccessStripeMapHeader(void);
     56 
     57 void    rf_FreeAccessStripeMapHeader(RF_AccessStripeMapHeader_t * p);
     58 
     59 RF_PhysDiskAddr_t *rf_AllocPhysDiskAddr(void);
     60 
     61 RF_PhysDiskAddr_t *rf_AllocPDAList(int count);
     62 
     63 void    rf_FreePhysDiskAddr(RF_PhysDiskAddr_t * p);
     64 
     65 RF_AccessStripeMap_t *rf_AllocAccessStripeMapComponent(void);
     66 
     67 RF_AccessStripeMap_t *rf_AllocASMList(int count);
     68 
     69 void    rf_FreeAccessStripeMapComponent(RF_AccessStripeMap_t * p);
     70 
     71 void    rf_FreeAccessStripeMap(RF_AccessStripeMapHeader_t * hdr);
     72 
     73 int     rf_CheckStripeForFailures(RF_Raid_t * raidPtr, RF_AccessStripeMap_t * asmap);
     74 
     75 int     rf_NumFailedDataUnitsInStripe(RF_Raid_t * raidPtr, RF_AccessStripeMap_t * asmap);
     76 
     77 void    rf_PrintAccessStripeMap(RF_AccessStripeMapHeader_t * asm_h);
     78 
     79 void    rf_PrintFullAccessStripeMap(RF_AccessStripeMapHeader_t * asm_h, int prbuf);
     80 
     81 void
     82 rf_PrintRaidAddressInfo(RF_Raid_t * raidPtr, RF_RaidAddr_t raidAddr,
     83     RF_SectorCount_t numBlocks);
     84 
     85 void
     86 rf_ASMParityAdjust(RF_PhysDiskAddr_t * toAdjust,
     87     RF_StripeNum_t startAddrWithinStripe, RF_SectorNum_t endAddress,
     88     RF_RaidLayout_t * layoutPtr, RF_AccessStripeMap_t * asm_p);
     89 
     90 void
     91 rf_ASMCheckStatus(RF_Raid_t * raidPtr, RF_PhysDiskAddr_t * pda_p,
     92     RF_AccessStripeMap_t * asm_p, RF_RaidDisk_t ** disks, int parity);
     93 
     94 #endif				/* !_RF__RF_MAP_H_ */
     95