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Annotation of sys/dev/raidframe/rf_dagutils.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: rf_dagutils.h,v 1.3 2002/12/16 07:01:03 tdeval Exp $  */
                      2: /*     $NetBSD: rf_dagutils.h,v 1.3 1999/02/05 00:06:08 oster Exp $    */
                      3:
                      4: /*
                      5:  * Copyright (c) 1995 Carnegie-Mellon University.
                      6:  * All rights reserved.
                      7:  *
                      8:  * Author: Mark Holland, William V. Courtright II
                      9:  *
                     10:  * Permission to use, copy, modify and distribute this software and
                     11:  * its documentation is hereby granted, provided that both the copyright
                     12:  * notice and this permission notice appear in all copies of the
                     13:  * software, derivative works or modified versions, and any portions
                     14:  * thereof, and that both notices appear in supporting documentation.
                     15:  *
                     16:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
                     17:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
                     18:  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     19:  *
                     20:  * Carnegie Mellon requests users of this software to return to
                     21:  *
                     22:  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
                     23:  *  School of Computer Science
                     24:  *  Carnegie Mellon University
                     25:  *  Pittsburgh PA 15213-3890
                     26:  *
                     27:  * any improvements or extensions that they make and grant Carnegie the
                     28:  * rights to redistribute these changes.
                     29:  */
                     30:
                     31: /*****************************************************************************
                     32:  *
                     33:  * rf_dagutils.h -- Header file for utility routines for manipulating DAGs.
                     34:  *
                     35:  *****************************************************************************/
                     36:
                     37:
                     38: #include "rf_types.h"
                     39: #include "rf_dagfuncs.h"
                     40: #include "rf_general.h"
                     41:
                     42: #ifndef        _RF__RF_DAGUTILS_H_
                     43: #define        _RF__RF_DAGUTILS_H_
                     44:
                     45: struct RF_RedFuncs_s {
                     46:        int     (*regular) (RF_DagNode_t *);
                     47:        char     *RegularName;
                     48:        int     (*simple) (RF_DagNode_t *);
                     49:        char     *SimpleName;
                     50: };
                     51:
                     52: extern RF_RedFuncs_t rf_xorFuncs;
                     53: extern RF_RedFuncs_t rf_xorRecoveryFuncs;
                     54:
                     55: void rf_InitNode(RF_DagNode_t *, RF_NodeStatus_t, int, int (*) (RF_DagNode_t *),
                     56:        int (*) (RF_DagNode_t *), int (*) (RF_DagNode_t *, int), int, int, int,
                     57:        int, RF_DagHeader_t *, char *, RF_AllocListElem_t *);
                     58:
                     59: void rf_FreeDAG(RF_DagHeader_t *);
                     60:
                     61: RF_PropHeader_t *rf_MakePropListEntry(RF_DagHeader_t *, int, int,
                     62: RF_PropHeader_t *, RF_AllocListElem_t *);
                     63:
                     64: int  rf_ConfigureDAGs(RF_ShutdownList_t **);
                     65:
                     66: RF_DagHeader_t *rf_AllocDAGHeader(void);
                     67:
                     68: void rf_FreeDAGHeader(RF_DagHeader_t *);
                     69:
                     70: void *rf_AllocBuffer(RF_Raid_t *, RF_DagHeader_t *, RF_PhysDiskAddr_t *,
                     71:        RF_AllocListElem_t *);
                     72:
                     73: char *rf_NodeStatusString(RF_DagNode_t *);
                     74:
                     75: void rf_PrintNodeInfoString(RF_DagNode_t *);
                     76:
                     77: int  rf_AssignNodeNums(RF_DagHeader_t *);
                     78:
                     79: int  rf_RecurAssignNodeNums(RF_DagNode_t *, int, int);
                     80:
                     81: void rf_ResetDAGHeaderPointers(RF_DagHeader_t *, RF_DagHeader_t *);
                     82:
                     83: void rf_RecurResetDAGHeaderPointers(RF_DagNode_t *, RF_DagHeader_t *);
                     84:
                     85: void rf_PrintDAGList(RF_DagHeader_t *);
                     86:
                     87: int  rf_ValidateDAG(RF_DagHeader_t *);
                     88:
                     89: void rf_redirect_asm(RF_Raid_t *, RF_AccessStripeMap_t *);
                     90:
                     91: void rf_MapUnaccessedPortionOfStripe(RF_Raid_t *, RF_RaidLayout_t *,
                     92:        RF_AccessStripeMap_t *, RF_DagHeader_t *, RF_AccessStripeMapHeader_t **,
                     93:        int *, char **, char **, RF_AllocListElem_t *);
                     94:
                     95: int  rf_PDAOverlap(RF_RaidLayout_t *, RF_PhysDiskAddr_t *, RF_PhysDiskAddr_t *);
                     96:
                     97: void rf_GenerateFailedAccessASMs(RF_Raid_t *, RF_AccessStripeMap_t *,
                     98:        RF_PhysDiskAddr_t *, RF_DagHeader_t *, RF_AccessStripeMapHeader_t **,
                     99:        int *, char **, char *, RF_AllocListElem_t *);
                    100:
                    101: /* Flags used by RangeRestrictPDA. */
                    102: #define        RF_RESTRICT_NOBUFFER    0
                    103: #define        RF_RESTRICT_DOBUFFER    1
                    104:
                    105: void rf_RangeRestrictPDA(RF_Raid_t *, RF_PhysDiskAddr_t *, RF_PhysDiskAddr_t *,
                    106:        int, int);
                    107:
                    108: int  rf_compute_workload_shift(RF_Raid_t *, RF_PhysDiskAddr_t *);
                    109: void rf_SelectMirrorDiskIdle(RF_DagNode_t *);
                    110: void rf_SelectMirrorDiskPartition(RF_DagNode_t *);
                    111:
                    112: #endif /* ! _RF__RF_DAGUTILS_H_ */