138 lines
5.8 KiB
C
138 lines
5.8 KiB
C
/* $NetBSD: rf_dagfuncs.h,v 1.1 1998/11/13 04:20:28 oster Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Mark Holland, William V. Courtright II, Jim Zelenka
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/*****************************************************************************************
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*
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* dagfuncs.h -- header file for DAG node execution routines
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*
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****************************************************************************************/
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/*
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* :
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* Log: rf_dagfuncs.h,v
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* Revision 1.17 1996/07/22 19:52:16 jimz
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* switched node params to RF_DagParam_t, a union of
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* a 64-bit int and a void *, for better portability
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* attempted hpux port, but failed partway through for
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* lack of a single C compiler capable of compiling all
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* source files
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*
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* Revision 1.16 1996/06/10 11:55:47 jimz
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* Straightened out some per-array/not-per-array distinctions, fixed
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* a couple bugs related to confusion. Added shutdown lists. Removed
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* layout shutdown function (now subsumed by shutdown lists).
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*
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* Revision 1.15 1996/06/06 17:27:20 jimz
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* added another read mirror func (partitioning), changed names so dag
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* creation routines can use the appropriate one
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*
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* Revision 1.14 1996/05/30 11:29:41 jimz
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* Numerous bug fixes. Stripe lock release code disagreed with the taking code
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* about when stripes should be locked (I made it consistent: no parity, no lock)
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* There was a lot of extra serialization of I/Os which I've removed- a lot of
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* it was to calculate values for the cache code, which is no longer with us.
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* More types, function, macro cleanup. Added code to properly quiesce the array
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* on shutdown. Made a lot of stuff array-specific which was (bogusly) general
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* before. Fixed memory allocation, freeing bugs.
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*
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* Revision 1.13 1996/05/24 22:17:04 jimz
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* continue code + namespace cleanup
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* typed a bunch of flags
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*
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* Revision 1.12 1996/05/24 04:28:55 jimz
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* release cleanup ckpt
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*
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* Revision 1.11 1996/05/23 21:46:35 jimz
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* checkpoint in code cleanup (release prep)
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* lots of types, function names have been fixed
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*
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* Revision 1.10 1996/05/18 19:51:34 jimz
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* major code cleanup- fix syntax, make some types consistent,
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* add prototypes, clean out dead code, et cetera
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*
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* Revision 1.9 1995/12/01 15:56:46 root
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* added copyright info
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*
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* Revision 1.8 1995/11/07 16:25:23 wvcii
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* added DiskUnlockFuncForThreads
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*
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*/
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#ifndef _RF__RF_DAGFUNCS_H_
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#define _RF__RF_DAGFUNCS_H_
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int rf_ConfigureDAGFuncs(RF_ShutdownList_t **listp);
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int rf_TerminateFunc(RF_DagNode_t *node);
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int rf_TerminateUndoFunc(RF_DagNode_t *node);
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int rf_DiskReadMirrorIdleFunc(RF_DagNode_t *node);
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int rf_DiskReadMirrorPartitionFunc(RF_DagNode_t *node);
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int rf_DiskReadMirrorUndoFunc(RF_DagNode_t *node);
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int rf_ParityLogUpdateFunc(RF_DagNode_t *node);
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int rf_ParityLogOverwriteFunc(RF_DagNode_t *node);
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int rf_ParityLogUpdateUndoFunc(RF_DagNode_t *node);
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int rf_ParityLogOverwriteUndoFunc(RF_DagNode_t *node);
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int rf_NullNodeFunc(RF_DagNode_t *node);
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int rf_NullNodeUndoFunc(RF_DagNode_t *node);
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int rf_DiskReadFuncForThreads(RF_DagNode_t *node);
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int rf_DiskWriteFuncForThreads(RF_DagNode_t *node);
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int rf_DiskUndoFunc(RF_DagNode_t *node);
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int rf_DiskUnlockFuncForThreads(RF_DagNode_t *node);
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int rf_GenericWakeupFunc(RF_DagNode_t *node, int status);
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int rf_RegularXorFunc(RF_DagNode_t *node);
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int rf_SimpleXorFunc(RF_DagNode_t *node);
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int rf_RecoveryXorFunc(RF_DagNode_t *node);
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int rf_XorIntoBuffer(RF_Raid_t *raidPtr, RF_PhysDiskAddr_t *pda, char *srcbuf,
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char *targbuf, void *bp);
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int rf_bxor(char *src, char *dest, int len, void *bp);
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int rf_longword_bxor(register unsigned long *src, register unsigned long *dest,
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int len, void *bp);
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int rf_longword_bxor3(register unsigned long *dest, register unsigned long *a,
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register unsigned long *b, register unsigned long *c, int len, void *bp);
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int rf_bxor3(unsigned char *dst, unsigned char *a, unsigned char *b,
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unsigned char *c, unsigned long len, void *bp);
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/* function ptrs defined in ConfigureDAGFuncs() */
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extern int (*rf_DiskReadFunc)(RF_DagNode_t *);
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extern int (*rf_DiskWriteFunc)(RF_DagNode_t *);
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extern int (*rf_DiskReadUndoFunc)(RF_DagNode_t *);
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extern int (*rf_DiskWriteUndoFunc)(RF_DagNode_t *);
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extern int (*rf_DiskUnlockFunc)(RF_DagNode_t *);
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extern int (*rf_DiskUnlockUndoFunc)(RF_DagNode_t *);
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extern int (*rf_SimpleXorUndoFunc)(RF_DagNode_t *);
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extern int (*rf_RegularXorUndoFunc)(RF_DagNode_t *);
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extern int (*rf_RecoveryXorUndoFunc)(RF_DagNode_t *);
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/* macros for manipulating the param[3] in a read or write node */
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#define RF_CREATE_PARAM3(pri, lk, unlk, wru) (((RF_uint64)(((wru&0xFFFFFF)<<8)|((lk)?0x10:0)|((unlk)?0x20:0)|((pri)&0xF)) ))
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#define RF_EXTRACT_PRIORITY(_x_) ((((unsigned) ((unsigned long)(_x_))) >> 0) & 0x0F)
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#define RF_EXTRACT_LOCK_FLAG(_x_) ((((unsigned) ((unsigned long)(_x_))) >> 4) & 0x1)
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#define RF_EXTRACT_UNLOCK_FLAG(_x_) ((((unsigned) ((unsigned long)(_x_))) >> 5) & 0x1)
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#define RF_EXTRACT_RU(_x_) ((((unsigned) ((unsigned long)(_x_))) >> 8) & 0xFFFFFF)
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#endif /* !_RF__RF_DAGFUNCS_H_ */
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