1 /* $NetBSD: rf_dagutils.h,v 1.22 2021/07/23 00:54:45 oster 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 void (*regular) (RF_DagNode_t *); 46 const char *RegularName; 47 void (*simple) (RF_DagNode_t *); 48 const char *SimpleName; 49 }; 50 51 typedef struct RF_FuncList_s { 52 RF_VoidFuncPtr fp; 53 struct RF_FuncList_s *next; 54 } RF_FuncList_t; 55 56 extern const RF_RedFuncs_t rf_xorFuncs; 57 extern const RF_RedFuncs_t rf_xorRecoveryFuncs; 58 59 void rf_InitNode(RF_DagNode_t *, RF_NodeStatus_t, int, 60 void (*) (RF_DagNode_t *), 61 void (*) (RF_DagNode_t *), 62 void (*) (void *, int), 63 int, int, int, int, RF_DagHeader_t *, 64 const char *, RF_AllocListElem_t *); 65 66 void rf_FreeDAG(RF_DagHeader_t *); 67 int rf_ConfigureDAGs(RF_ShutdownList_t **, RF_Raid_t *, RF_Config_t *); 68 69 RF_DagHeader_t *rf_AllocDAGHeader(RF_Raid_t *); 70 void rf_FreeDAGHeader(RF_Raid_t *raidPtr, RF_DagHeader_t * dh); 71 72 RF_DagNode_t *rf_AllocDAGNode(RF_Raid_t *); 73 void rf_FreeDAGNode(RF_Raid_t *, RF_DagNode_t *); 74 75 RF_DagList_t *rf_AllocDAGList(RF_Raid_t *); 76 void rf_FreeDAGList(RF_Raid_t *, RF_DagList_t *); 77 78 void *rf_AllocDAGPCache(RF_Raid_t *); 79 void rf_FreeDAGPCache(RF_Raid_t *, void *); 80 81 RF_FuncList_t *rf_AllocFuncList(RF_Raid_t *); 82 void rf_FreeFuncList(RF_Raid_t *, RF_FuncList_t *); 83 84 void *rf_AllocBuffer(RF_Raid_t *, RF_DagHeader_t *, int); 85 void *rf_AllocIOBuffer(RF_Raid_t *, int); 86 void rf_FreeIOBuffer(RF_Raid_t *, RF_VoidPointerListElem_t *); 87 void *rf_AllocStripeBuffer(RF_Raid_t *, RF_DagHeader_t *, int); 88 void rf_FreeStripeBuffer(RF_Raid_t *, RF_VoidPointerListElem_t *); 89 90 char *rf_NodeStatusString(RF_DagNode_t *); 91 void rf_PrintNodeInfoString(RF_DagNode_t *); 92 int rf_AssignNodeNums(RF_DagHeader_t *); 93 int rf_RecurAssignNodeNums(RF_DagNode_t *, int, int); 94 void rf_ResetDAGHeaderPointers(RF_DagHeader_t *, RF_DagHeader_t *); 95 void rf_RecurResetDAGHeaderPointers(RF_DagNode_t *, RF_DagHeader_t *); 96 void rf_PrintDAGList(RF_DagHeader_t *); 97 int rf_ValidateDAG(RF_DagHeader_t *); 98 void rf_redirect_asm(RF_Raid_t *, RF_AccessStripeMap_t *); 99 void rf_MapUnaccessedPortionOfStripe(RF_Raid_t *, RF_RaidLayout_t *, 100 RF_AccessStripeMap_t *, RF_DagHeader_t *, 101 RF_AccessStripeMapHeader_t **, int *, 102 char **, char **, RF_AllocListElem_t *); 103 int rf_PDAOverlap(RF_RaidLayout_t *, RF_PhysDiskAddr_t *, RF_PhysDiskAddr_t *); 104 void rf_GenerateFailedAccessASMs(RF_Raid_t *, RF_AccessStripeMap_t *, 105 RF_PhysDiskAddr_t *, RF_DagHeader_t *, 106 RF_AccessStripeMapHeader_t **, 107 int *, char **, char *, RF_AllocListElem_t *); 108 109 /* flags used by RangeRestrictPDA */ 110 #define RF_RESTRICT_NOBUFFER 0 111 #define RF_RESTRICT_DOBUFFER 1 112 113 void rf_RangeRestrictPDA(RF_Raid_t *, RF_PhysDiskAddr_t *, 114 RF_PhysDiskAddr_t *, int, int); 115 116 int rf_compute_workload_shift(RF_Raid_t *, RF_PhysDiskAddr_t *); 117 void rf_SelectMirrorDiskIdle(RF_DagNode_t *); 118 void rf_SelectMirrorDiskPartition(RF_DagNode_t *); 119 120 #endif /* !_RF__RF_DAGUTILS_H_ */ 121