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rf_map.h revision 1.1 
      1 /*	$NetBSD: rf_map.h,v 1.1 1998/11/13 04:20:31 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 /* :
     32  * Log: rf_map.h,v
     33  * Revision 1.9  1996/07/22 19:52:16  jimz
     34  * switched node params to RF_DagParam_t, a union of
     35  * a 64-bit int and a void *, for better portability
     36  * attempted hpux port, but failed partway through for
     37  * lack of a single C compiler capable of compiling all
     38  * source files
     39  *
     40  * Revision 1.8  1996/06/10  11:55:47  jimz
     41  * Straightened out some per-array/not-per-array distinctions, fixed
     42  * a couple bugs related to confusion. Added shutdown lists. Removed
     43  * layout shutdown function (now subsumed by shutdown lists).
     44  *
     45  * Revision 1.7  1996/06/07  21:33:04  jimz
     46  * begin using consistent types for sector numbers,
     47  * stripe numbers, row+col numbers, recon unit numbers
     48  *
     49  * Revision 1.6  1996/05/31  22:26:54  jimz
     50  * fix a lot of mapping problems, memory allocation problems
     51  * found some weird lock issues, fixed 'em
     52  * more code cleanup
     53  *
     54  * Revision 1.5  1996/05/30  11:29:41  jimz
     55  * Numerous bug fixes. Stripe lock release code disagreed with the taking code
     56  * about when stripes should be locked (I made it consistent: no parity, no lock)
     57  * There was a lot of extra serialization of I/Os which I've removed- a lot of
     58  * it was to calculate values for the cache code, which is no longer with us.
     59  * More types, function, macro cleanup. Added code to properly quiesce the array
     60  * on shutdown. Made a lot of stuff array-specific which was (bogusly) general
     61  * before. Fixed memory allocation, freeing bugs.
     62  *
     63  * Revision 1.4  1996/05/23  21:46:35  jimz
     64  * checkpoint in code cleanup (release prep)
     65  * lots of types, function names have been fixed
     66  *
     67  * Revision 1.3  1996/05/18  19:51:34  jimz
     68  * major code cleanup- fix syntax, make some types consistent,
     69  * add prototypes, clean out dead code, et cetera
     70  *
     71  * Revision 1.2  1995/12/01  19:25:14  root
     72  * added copyright info
     73  *
     74  */
     75 
     76 #ifndef _RF__RF_MAP_H_
     77 #define _RF__RF_MAP_H_
     78 
     79 #include "rf_types.h"
     80 #include "rf_alloclist.h"
     81 #include "rf_raid.h"
     82 
     83 /* mapping structure allocation and free routines */
     84 RF_AccessStripeMapHeader_t *rf_MapAccess(RF_Raid_t *raidPtr,
     85 	RF_RaidAddr_t raidAddress, RF_SectorCount_t numBlocks,
     86 	caddr_t buffer, int remap);
     87 
     88 void rf_MarkFailuresInASMList(RF_Raid_t *raidPtr,
     89 	RF_AccessStripeMapHeader_t *asm_h);
     90 
     91 RF_AccessStripeMap_t *rf_DuplicateASM(RF_AccessStripeMap_t *asmap);
     92 
     93 RF_PhysDiskAddr_t *rf_DuplicatePDA(RF_PhysDiskAddr_t *pda);
     94 
     95 int rf_ConfigureMapModule(RF_ShutdownList_t **listp);
     96 
     97 RF_AccessStripeMapHeader_t *rf_AllocAccessStripeMapHeader(void);
     98 
     99 void rf_FreeAccessStripeMapHeader(RF_AccessStripeMapHeader_t *p);
    100 
    101 RF_PhysDiskAddr_t *rf_AllocPhysDiskAddr(void);
    102 
    103 RF_PhysDiskAddr_t *rf_AllocPDAList(int count);
    104 
    105 void rf_FreePhysDiskAddr(RF_PhysDiskAddr_t *p);
    106 
    107 RF_AccessStripeMap_t *rf_AllocAccessStripeMapComponent(void);
    108 
    109 RF_AccessStripeMap_t *rf_AllocASMList(int count);
    110 
    111 void rf_FreeAccessStripeMapComponent(RF_AccessStripeMap_t *p);
    112 
    113 void rf_FreeAccessStripeMap(RF_AccessStripeMapHeader_t *hdr);
    114 
    115 int rf_CheckStripeForFailures(RF_Raid_t *raidPtr, RF_AccessStripeMap_t *asmap);
    116 
    117 int rf_NumFailedDataUnitsInStripe(RF_Raid_t *raidPtr, RF_AccessStripeMap_t *asmap);
    118 
    119 void rf_PrintAccessStripeMap(RF_AccessStripeMapHeader_t *asm_h);
    120 
    121 void rf_PrintFullAccessStripeMap(RF_AccessStripeMapHeader_t *asm_h, int prbuf);
    122 
    123 void rf_PrintRaidAddressInfo(RF_Raid_t *raidPtr, RF_RaidAddr_t raidAddr,
    124 	RF_SectorCount_t numBlocks);
    125 
    126 void rf_ASMParityAdjust(RF_PhysDiskAddr_t *toAdjust,
    127 	RF_StripeNum_t startAddrWithinStripe, RF_SectorNum_t endAddress,
    128 	RF_RaidLayout_t *layoutPtr, RF_AccessStripeMap_t *asm_p);
    129 
    130 void rf_ASMCheckStatus(RF_Raid_t *raidPtr, RF_PhysDiskAddr_t *pda_p,
    131 	RF_AccessStripeMap_t *asm_p, RF_RaidDisk_t **disks, int parity);
    132 
    133 #endif /* !_RF__RF_MAP_H_ */
    134