1 /* $NetBSD: rf_dagfuncs.h,v 1.10 2006/01/09 01:33:27 oster Exp $ */ 2 /* 3 * Copyright (c) 1995 Carnegie-Mellon University. 4 * All rights reserved. 5 * 6 * Author: Mark Holland, William V. Courtright II, Jim Zelenka 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 * dagfuncs.h -- header file for DAG node execution routines 32 * 33 ****************************************************************************************/ 34 35 #ifndef _RF__RF_DAGFUNCS_H_ 36 #define _RF__RF_DAGFUNCS_H_ 37 38 int rf_ConfigureDAGFuncs(RF_ShutdownList_t ** listp); 39 int rf_TerminateFunc(RF_DagNode_t * node); 40 int rf_TerminateUndoFunc(RF_DagNode_t * node); 41 int rf_DiskReadMirrorIdleFunc(RF_DagNode_t * node); 42 int rf_DiskReadMirrorPartitionFunc(RF_DagNode_t * node); 43 int rf_DiskReadMirrorUndoFunc(RF_DagNode_t * node); 44 int rf_ParityLogUpdateFunc(RF_DagNode_t * node); 45 int rf_ParityLogOverwriteFunc(RF_DagNode_t * node); 46 int rf_ParityLogUpdateUndoFunc(RF_DagNode_t * node); 47 int rf_ParityLogOverwriteUndoFunc(RF_DagNode_t * node); 48 int rf_NullNodeFunc(RF_DagNode_t * node); 49 int rf_NullNodeUndoFunc(RF_DagNode_t * node); 50 int rf_DiskReadFuncForThreads(RF_DagNode_t * node); 51 int rf_DiskWriteFuncForThreads(RF_DagNode_t * node); 52 int rf_DiskUndoFunc(RF_DagNode_t * node); 53 int rf_GenericWakeupFunc(RF_DagNode_t * node, int status); 54 int rf_RegularXorFunc(RF_DagNode_t * node); 55 int rf_SimpleXorFunc(RF_DagNode_t * node); 56 int rf_RecoveryXorFunc(RF_DagNode_t * node); 57 int 58 rf_XorIntoBuffer(RF_Raid_t * raidPtr, RF_PhysDiskAddr_t * pda, char *srcbuf, 59 char *targbuf); 60 int rf_bxor(char *src, char *dest, int len); 61 int 62 rf_longword_bxor(unsigned long *src, unsigned long *dest, int len); 63 int 64 rf_longword_bxor3(unsigned long *dest, unsigned long *a, unsigned long *b, 65 unsigned long *c, int len, void *bp); 66 int 67 rf_bxor3(unsigned char *dst, unsigned char *a, unsigned char *b, 68 unsigned char *c, unsigned long len, void *bp); 69 70 /* function ptrs defined in ConfigureDAGFuncs() */ 71 extern int (*rf_DiskReadFunc) (RF_DagNode_t *); 72 extern int (*rf_DiskWriteFunc) (RF_DagNode_t *); 73 extern int (*rf_DiskReadUndoFunc) (RF_DagNode_t *); 74 extern int (*rf_DiskWriteUndoFunc) (RF_DagNode_t *); 75 extern int (*rf_SimpleXorUndoFunc) (RF_DagNode_t *); 76 extern int (*rf_RegularXorUndoFunc) (RF_DagNode_t *); 77 extern int (*rf_RecoveryXorUndoFunc) (RF_DagNode_t *); 78 79 /* macros for manipulating the param[3] in a read or write node */ 80 #define RF_CREATE_PARAM3(pri, wru) (((RF_uint64)(((wru&0xFFFFFF)<<8)|((pri)&0xF)) )) 81 #define RF_EXTRACT_PRIORITY(_x_) ((((unsigned) ((unsigned long)(_x_))) >> 0) & 0x0F) 82 #define RF_EXTRACT_RU(_x_) ((((unsigned) ((unsigned long)(_x_))) >> 8) & 0xFFFFFF) 83 84 #endif /* !_RF__RF_DAGFUNCS_H_ */ 85