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rf_dagfuncs.h revision 1.2 
      1 /*	$NetBSD: rf_dagfuncs.h,v 1.2 1999/01/26 02:33:53 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 (at) 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_DiskUnlockFuncForThreads(RF_DagNode_t *node);
     54 int rf_GenericWakeupFunc(RF_DagNode_t *node, int status);
     55 int rf_RegularXorFunc(RF_DagNode_t *node);
     56 int rf_SimpleXorFunc(RF_DagNode_t *node);
     57 int rf_RecoveryXorFunc(RF_DagNode_t *node);
     58 int rf_XorIntoBuffer(RF_Raid_t *raidPtr, RF_PhysDiskAddr_t *pda, char *srcbuf,
     59 	char *targbuf, void *bp);
     60 int rf_bxor(char *src, char *dest, int len, void *bp);
     61 int rf_longword_bxor(register unsigned long *src, register unsigned long *dest,
     62 	int len, void *bp);
     63 int rf_longword_bxor3(register unsigned long *dest, register unsigned long *a,
     64 	register unsigned long *b, register unsigned long *c, int len, void *bp);
     65 int rf_bxor3(unsigned char *dst, unsigned char *a, unsigned char *b,
     66 	unsigned char *c, unsigned long len, void *bp);
     67 
     68 /* function ptrs defined in ConfigureDAGFuncs() */
     69 extern int (*rf_DiskReadFunc)(RF_DagNode_t *);
     70 extern int (*rf_DiskWriteFunc)(RF_DagNode_t *);
     71 extern int (*rf_DiskReadUndoFunc)(RF_DagNode_t *);
     72 extern int (*rf_DiskWriteUndoFunc)(RF_DagNode_t *);
     73 extern int (*rf_DiskUnlockFunc)(RF_DagNode_t *);
     74 extern int (*rf_DiskUnlockUndoFunc)(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, lk, unlk, wru) (((RF_uint64)(((wru&0xFFFFFF)<<8)|((lk)?0x10:0)|((unlk)?0x20:0)|((pri)&0xF)) ))
     81 #define RF_EXTRACT_PRIORITY(_x_)     ((((unsigned) ((unsigned long)(_x_))) >> 0) & 0x0F)
     82 #define RF_EXTRACT_LOCK_FLAG(_x_)    ((((unsigned) ((unsigned long)(_x_))) >> 4) & 0x1)
     83 #define RF_EXTRACT_UNLOCK_FLAG(_x_)  ((((unsigned) ((unsigned long)(_x_))) >> 5) & 0x1)
     84 #define RF_EXTRACT_RU(_x_)           ((((unsigned) ((unsigned long)(_x_))) >> 8) & 0xFFFFFF)
     85 
     86 #endif /* !_RF__RF_DAGFUNCS_H_ */
     87