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/* $OpenBSD: rf_dagfuncs.h,v 1.4 2002/12/16 07:01:03 tdeval Exp $ */
/* $NetBSD: rf_dagfuncs.h,v 1.4 2000/03/30 13:39:07 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Mark Holland, William V. Courtright II, Jim Zelenka
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*****************************************************************************
*
* dagfuncs.h -- Header file for DAG node execution routines.
*
*****************************************************************************/
#ifndef _RF__RF_DAGFUNCS_H_
#define _RF__RF_DAGFUNCS_H_
int rf_ConfigureDAGFuncs(RF_ShutdownList_t **);
int rf_TerminateFunc(RF_DagNode_t *);
int rf_TerminateUndoFunc(RF_DagNode_t *);
int rf_DiskReadMirrorIdleFunc(RF_DagNode_t *);
int rf_DiskReadMirrorPartitionFunc(RF_DagNode_t *);
int rf_DiskReadMirrorUndoFunc(RF_DagNode_t *);
int rf_ParityLogUpdateFunc(RF_DagNode_t *);
int rf_ParityLogOverwriteFunc(RF_DagNode_t *);
int rf_ParityLogUpdateUndoFunc(RF_DagNode_t *);
int rf_ParityLogOverwriteUndoFunc(RF_DagNode_t *);
int rf_NullNodeFunc(RF_DagNode_t *);
int rf_NullNodeUndoFunc(RF_DagNode_t *);
int rf_DiskReadFuncForThreads(RF_DagNode_t *);
int rf_DiskWriteFuncForThreads(RF_DagNode_t *);
int rf_DiskUndoFunc(RF_DagNode_t *);
int rf_DiskUnlockFuncForThreads(RF_DagNode_t *);
int rf_GenericWakeupFunc(RF_DagNode_t *, int);
int rf_RegularXorFunc(RF_DagNode_t *);
int rf_SimpleXorFunc(RF_DagNode_t *);
int rf_RecoveryXorFunc(RF_DagNode_t *);
int rf_XorIntoBuffer(RF_Raid_t *, RF_PhysDiskAddr_t *, char *, char *, void *);
int rf_bxor(char *, char *, int, void *);
int rf_longword_bxor(unsigned long *, unsigned long *, int, void *);
int rf_longword_bxor3(unsigned long *, unsigned long *, unsigned long *,
unsigned long *, int, void *);
int rf_bxor3(unsigned char *, unsigned char *, unsigned char *,
unsigned char *, unsigned long, void *);
/* Function ptrs defined in ConfigureDAGFuncs(). */
extern int (*rf_DiskReadFunc) (RF_DagNode_t *);
extern int (*rf_DiskWriteFunc) (RF_DagNode_t *);
extern int (*rf_DiskReadUndoFunc) (RF_DagNode_t *);
extern int (*rf_DiskWriteUndoFunc) (RF_DagNode_t *);
extern int (*rf_DiskUnlockFunc) (RF_DagNode_t *);
extern int (*rf_DiskUnlockUndoFunc) (RF_DagNode_t *);
extern int (*rf_SimpleXorUndoFunc) (RF_DagNode_t *);
extern int (*rf_RegularXorUndoFunc) (RF_DagNode_t *);
extern int (*rf_RecoveryXorUndoFunc) (RF_DagNode_t *);
/* Macros for manipulating the param[3] in a read or write node. */
#define RF_CREATE_PARAM3(pri,lk,unlk,wru) \
(((RF_uint64) (((wru & 0xFFFFFF) << 8) | ((lk) ? 0x10 : 0) | \
((unlk) ? 0x20 : 0) | ((pri) & 0xF))))
#define RF_EXTRACT_PRIORITY(_x_) \
((((unsigned) ((unsigned long)(_x_))) >> 0) & 0x0F)
#define RF_EXTRACT_LOCK_FLAG(_x_) \
((((unsigned) ((unsigned long)(_x_))) >> 4) & 0x1)
#define RF_EXTRACT_UNLOCK_FLAG(_x_) \
((((unsigned) ((unsigned long)(_x_))) >> 5) & 0x1)
#define RF_EXTRACT_RU(_x_) \
((((unsigned) ((unsigned long)(_x_))) >> 8) & 0xFFFFFF)
#endif /* !_RF__RF_DAGFUNCS_H_ */
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