| 1 | /* $NetBSD: rf_dagutils.h,v 1.20 2005/12/11 12:23:37 christos 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 | const char *RegularName; |
| 47 | int (*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 | int (*) (RF_DagNode_t *), |
| 61 | int (*) (RF_DagNode_t *), |
| 62 | int (*) (RF_DagNode_t *, 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 **); |
| 68 | |
| 69 | RF_DagHeader_t *(void); |
| 70 | void (RF_DagHeader_t * dh); |
| 71 | |
| 72 | RF_DagNode_t *rf_AllocDAGNode(void); |
| 73 | void rf_FreeDAGNode(RF_DagNode_t *); |
| 74 | |
| 75 | RF_DagList_t *rf_AllocDAGList(void); |
| 76 | void rf_FreeDAGList(RF_DagList_t *); |
| 77 | |
| 78 | void *rf_AllocDAGPCache(void); |
| 79 | void rf_FreeDAGPCache(void *); |
| 80 | |
| 81 | RF_FuncList_t *rf_AllocFuncList(void); |
| 82 | void rf_FreeFuncList(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_DagHeader_t *, RF_DagHeader_t *); |
| 95 | void (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 | |