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 | |