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rf_dagutils.h revision 1.8
      1  1.8     oster /*	$NetBSD: rf_dagutils.h,v 1.8 2004/02/27 02:55:17 oster Exp $	*/
      2  1.1     oster /*
      3  1.1     oster  * Copyright (c) 1995 Carnegie-Mellon University.
      4  1.1     oster  * All rights reserved.
      5  1.1     oster  *
      6  1.1     oster  * Author: Mark Holland, William V. Courtright II
      7  1.1     oster  *
      8  1.1     oster  * Permission to use, copy, modify and distribute this software and
      9  1.1     oster  * its documentation is hereby granted, provided that both the copyright
     10  1.1     oster  * notice and this permission notice appear in all copies of the
     11  1.1     oster  * software, derivative works or modified versions, and any portions
     12  1.1     oster  * thereof, and that both notices appear in supporting documentation.
     13  1.1     oster  *
     14  1.1     oster  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     15  1.1     oster  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     16  1.1     oster  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     17  1.1     oster  *
     18  1.1     oster  * Carnegie Mellon requests users of this software to return to
     19  1.1     oster  *
     20  1.1     oster  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     21  1.1     oster  *  School of Computer Science
     22  1.1     oster  *  Carnegie Mellon University
     23  1.1     oster  *  Pittsburgh PA 15213-3890
     24  1.1     oster  *
     25  1.1     oster  * any improvements or extensions that they make and grant Carnegie the
     26  1.1     oster  * rights to redistribute these changes.
     27  1.1     oster  */
     28  1.1     oster 
     29  1.1     oster /*************************************************************************
     30  1.1     oster  *
     31  1.1     oster  * rf_dagutils.h -- header file for utility routines for manipulating DAGs
     32  1.1     oster  *
     33  1.1     oster  *************************************************************************/
     34  1.1     oster 
     35  1.1     oster 
     36  1.4     oster #include <dev/raidframe/raidframevar.h>
     37  1.4     oster 
     38  1.1     oster #include "rf_dagfuncs.h"
     39  1.1     oster #include "rf_general.h"
     40  1.1     oster 
     41  1.1     oster #ifndef _RF__RF_DAGUTILS_H_
     42  1.1     oster #define _RF__RF_DAGUTILS_H_
     43  1.1     oster 
     44  1.1     oster struct RF_RedFuncs_s {
     45  1.3     oster 	int     (*regular) (RF_DagNode_t *);
     46  1.3     oster 	char   *RegularName;
     47  1.3     oster 	int     (*simple) (RF_DagNode_t *);
     48  1.3     oster 	char   *SimpleName;
     49  1.1     oster };
     50  1.1     oster 
     51  1.7  jdolecek extern const RF_RedFuncs_t rf_xorFuncs;
     52  1.7  jdolecek extern const RF_RedFuncs_t rf_xorRecoveryFuncs;
     53  1.1     oster 
     54  1.3     oster void
     55  1.3     oster rf_InitNode(RF_DagNode_t * node, RF_NodeStatus_t initstatus,
     56  1.6     oster 	    int commit,
     57  1.6     oster 	    int (*doFunc) (RF_DagNode_t * node),
     58  1.6     oster 	    int (*undoFunc) (RF_DagNode_t * node),
     59  1.6     oster 	    int (*wakeFunc) (RF_DagNode_t * node, int status),
     60  1.6     oster 	    int nSucc, int nAnte, int nParam, int nResult,
     61  1.6     oster 	    RF_DagHeader_t * hdr, char *name, RF_AllocListElem_t * alist);
     62  1.1     oster 
     63  1.6     oster void    rf_FreeDAG(RF_DagHeader_t * dag_h);
     64  1.1     oster 
     65  1.6     oster int     rf_ConfigureDAGs(RF_ShutdownList_t ** listp);
     66  1.1     oster 
     67  1.6     oster RF_DagHeader_t *rf_AllocDAGHeader(void);
     68  1.1     oster 
     69  1.6     oster void    rf_FreeDAGHeader(RF_DagHeader_t * dh);
     70  1.1     oster 
     71  1.8     oster RF_DagList_t *rf_AllocDAGList(void);
     72  1.8     oster void rf_FreeDAGList(RF_DagList_t *);
     73  1.8     oster 
     74  1.6     oster void   *rf_AllocBuffer(RF_Raid_t * raidPtr, RF_DagHeader_t * dag_h,
     75  1.6     oster 		       RF_PhysDiskAddr_t * pda,
     76  1.6     oster 		       RF_AllocListElem_t * allocList);
     77  1.1     oster 
     78  1.6     oster char   *rf_NodeStatusString(RF_DagNode_t * node);
     79  1.1     oster 
     80  1.6     oster void    rf_PrintNodeInfoString(RF_DagNode_t * node);
     81  1.1     oster 
     82  1.6     oster int     rf_AssignNodeNums(RF_DagHeader_t * dag_h);
     83  1.1     oster 
     84  1.6     oster int     rf_RecurAssignNodeNums(RF_DagNode_t * node, int num, int unvisited);
     85  1.1     oster 
     86  1.6     oster void    rf_ResetDAGHeaderPointers(RF_DagHeader_t * dag_h,
     87  1.6     oster 				  RF_DagHeader_t * newptr);
     88  1.1     oster 
     89  1.6     oster void    rf_RecurResetDAGHeaderPointers(RF_DagNode_t * node,
     90  1.6     oster 				       RF_DagHeader_t * newptr);
     91  1.1     oster 
     92  1.6     oster void    rf_PrintDAGList(RF_DagHeader_t * dag_h);
     93  1.1     oster 
     94  1.6     oster int     rf_ValidateDAG(RF_DagHeader_t * dag_h);
     95  1.1     oster 
     96  1.6     oster void    rf_redirect_asm(RF_Raid_t * raidPtr, RF_AccessStripeMap_t * asmap);
     97  1.1     oster 
     98  1.6     oster void    rf_MapUnaccessedPortionOfStripe(RF_Raid_t * raidPtr,
     99  1.6     oster 					RF_RaidLayout_t * layoutPtr,
    100  1.6     oster 					RF_AccessStripeMap_t * asmap,
    101  1.6     oster 					RF_DagHeader_t * dag_h,
    102  1.6     oster 					RF_AccessStripeMapHeader_t ** new_asm_h,
    103  1.6     oster 					int *nRodNodes, char **sosBuffer,
    104  1.6     oster 					char **eosBuffer,
    105  1.6     oster 					RF_AllocListElem_t * allocList);
    106  1.1     oster 
    107  1.6     oster int     rf_PDAOverlap(RF_RaidLayout_t * layoutPtr, RF_PhysDiskAddr_t * src,
    108  1.6     oster 		      RF_PhysDiskAddr_t * dest);
    109  1.1     oster 
    110  1.6     oster void    rf_GenerateFailedAccessASMs(RF_Raid_t * raidPtr,
    111  1.6     oster 				    RF_AccessStripeMap_t * asmap,
    112  1.6     oster 				    RF_PhysDiskAddr_t * failedPDA,
    113  1.6     oster 				    RF_DagHeader_t * dag_h,
    114  1.6     oster 				    RF_AccessStripeMapHeader_t ** new_asm_h,
    115  1.6     oster 				    int *nXorBufs, char **rpBufPtr,
    116  1.6     oster 				    char *overlappingPDAs,
    117  1.6     oster 				    RF_AllocListElem_t * allocList);
    118  1.1     oster 
    119  1.1     oster /* flags used by RangeRestrictPDA */
    120  1.1     oster #define RF_RESTRICT_NOBUFFER 0
    121  1.1     oster #define RF_RESTRICT_DOBUFFER 1
    122  1.1     oster 
    123  1.6     oster void    rf_RangeRestrictPDA(RF_Raid_t * raidPtr, RF_PhysDiskAddr_t * src,
    124  1.6     oster 			    RF_PhysDiskAddr_t * dest, int dobuffer,
    125  1.6     oster 			    int doraidaddr);
    126  1.6     oster 
    127  1.6     oster int     rf_compute_workload_shift(RF_Raid_t * raidPtr,
    128  1.6     oster 				  RF_PhysDiskAddr_t * pda);
    129  1.6     oster void    rf_SelectMirrorDiskIdle(RF_DagNode_t * node);
    130  1.6     oster void    rf_SelectMirrorDiskPartition(RF_DagNode_t * node);
    131  1.1     oster 
    132  1.3     oster #endif				/* !_RF__RF_DAGUTILS_H_ */
    133