1 /* $NetBSD: rf_dagutils.h,v 1.7 2003/02/09 10:04:33 jdolecek Exp $ */ 2 /* 3 * Copyright (c) 1995 Carnegie-Mellon University. 4 * All rights reserved. 5 * 6 * Author: Mark Holland, William V. Courtright II 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@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 /************************************************************************* 30 * 31 * rf_dagutils.h -- header file for utility routines for manipulating DAGs 32 * 33 *************************************************************************/ 34 35 36 #include <dev/raidframe/raidframevar.h> 37 38 #include "rf_dagfuncs.h" 39 #include "rf_general.h" 40 41 #ifndef _RF__RF_DAGUTILS_H_ 42 #define _RF__RF_DAGUTILS_H_ 43 44 struct RF_RedFuncs_s { 45 int (*regular) (RF_DagNode_t *); 46 char *RegularName; 47 int (*simple) (RF_DagNode_t *); 48 char *SimpleName; 49 }; 50 51 extern const RF_RedFuncs_t rf_xorFuncs; 52 extern const RF_RedFuncs_t rf_xorRecoveryFuncs; 53 54 void 55 rf_InitNode(RF_DagNode_t * node, RF_NodeStatus_t initstatus, 56 int commit, 57 int (*doFunc) (RF_DagNode_t * node), 58 int (*undoFunc) (RF_DagNode_t * node), 59 int (*wakeFunc) (RF_DagNode_t * node, int status), 60 int nSucc, int nAnte, int nParam, int nResult, 61 RF_DagHeader_t * hdr, char *name, RF_AllocListElem_t * alist); 62 63 void rf_FreeDAG(RF_DagHeader_t * dag_h); 64 65 int rf_ConfigureDAGs(RF_ShutdownList_t ** listp); 66 67 RF_DagHeader_t *rf_AllocDAGHeader(void); 68 69 void rf_FreeDAGHeader(RF_DagHeader_t * dh); 70 71 void *rf_AllocBuffer(RF_Raid_t * raidPtr, RF_DagHeader_t * dag_h, 72 RF_PhysDiskAddr_t * pda, 73 RF_AllocListElem_t * allocList); 74 75 char *rf_NodeStatusString(RF_DagNode_t * node); 76 77 void rf_PrintNodeInfoString(RF_DagNode_t * node); 78 79 int rf_AssignNodeNums(RF_DagHeader_t * dag_h); 80 81 int rf_RecurAssignNodeNums(RF_DagNode_t * node, int num, int unvisited); 82 83 void rf_ResetDAGHeaderPointers(RF_DagHeader_t * dag_h, 84 RF_DagHeader_t * newptr); 85 86 void rf_RecurResetDAGHeaderPointers(RF_DagNode_t * node, 87 RF_DagHeader_t * newptr); 88 89 void rf_PrintDAGList(RF_DagHeader_t * dag_h); 90 91 int rf_ValidateDAG(RF_DagHeader_t * dag_h); 92 93 void rf_redirect_asm(RF_Raid_t * raidPtr, RF_AccessStripeMap_t * asmap); 94 95 void rf_MapUnaccessedPortionOfStripe(RF_Raid_t * raidPtr, 96 RF_RaidLayout_t * layoutPtr, 97 RF_AccessStripeMap_t * asmap, 98 RF_DagHeader_t * dag_h, 99 RF_AccessStripeMapHeader_t ** new_asm_h, 100 int *nRodNodes, char **sosBuffer, 101 char **eosBuffer, 102 RF_AllocListElem_t * allocList); 103 104 int rf_PDAOverlap(RF_RaidLayout_t * layoutPtr, RF_PhysDiskAddr_t * src, 105 RF_PhysDiskAddr_t * dest); 106 107 void rf_GenerateFailedAccessASMs(RF_Raid_t * raidPtr, 108 RF_AccessStripeMap_t * asmap, 109 RF_PhysDiskAddr_t * failedPDA, 110 RF_DagHeader_t * dag_h, 111 RF_AccessStripeMapHeader_t ** new_asm_h, 112 int *nXorBufs, char **rpBufPtr, 113 char *overlappingPDAs, 114 RF_AllocListElem_t * allocList); 115 116 /* flags used by RangeRestrictPDA */ 117 #define RF_RESTRICT_NOBUFFER 0 118 #define RF_RESTRICT_DOBUFFER 1 119 120 void rf_RangeRestrictPDA(RF_Raid_t * raidPtr, RF_PhysDiskAddr_t * src, 121 RF_PhysDiskAddr_t * dest, int dobuffer, 122 int doraidaddr); 123 124 int rf_compute_workload_shift(RF_Raid_t * raidPtr, 125 RF_PhysDiskAddr_t * pda); 126 void rf_SelectMirrorDiskIdle(RF_DagNode_t * node); 127 void rf_SelectMirrorDiskPartition(RF_DagNode_t * node); 128 129 #endif /* !_RF__RF_DAGUTILS_H_ */ 130