root/dev/raidframe/rf_dagfuncs.h

INCLUDED FROM

    1 /*      $OpenBSD: rf_dagfuncs.h,v 1.4 2002/12/16 07:01:03 tdeval Exp $  */
    2 /*      $NetBSD: rf_dagfuncs.h,v 1.4 2000/03/30 13:39:07 oster Exp $    */
    4 /*
    5  * Copyright (c) 1995 Carnegie-Mellon University.
    6  * All rights reserved.
    7  *
    8  * Author: Mark Holland, William V. Courtright II, Jim Zelenka
    9  *
   10  * Permission to use, copy, modify and distribute this software and
   11  * its documentation is hereby granted, provided that both the copyright
   12  * notice and this permission notice appear in all copies of the
   13  * software, derivative works or modified versions, and any portions
   14  * thereof, and that both notices appear in supporting documentation.
   15  *
   16  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   17  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
   18  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   19  *
   20  * Carnegie Mellon requests users of this software to return to
   21  *
   22  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   23  *  School of Computer Science
   24  *  Carnegie Mellon University
   25  *  Pittsburgh PA 15213-3890
   26  *
   27  * any improvements or extensions that they make and grant Carnegie the
   28  * rights to redistribute these changes.
   29  */
   31 /*****************************************************************************
   32  *
   33  * dagfuncs.h -- Header file for DAG node execution routines.
   34  *
   35  *****************************************************************************/
   37 #ifndef _RF__RF_DAGFUNCS_H_
   38 #define _RF__RF_DAGFUNCS_H_
   40 int rf_ConfigureDAGFuncs(RF_ShutdownList_t **);
   41 int rf_TerminateFunc(RF_DagNode_t *);
   42 int rf_TerminateUndoFunc(RF_DagNode_t *);
   43 int rf_DiskReadMirrorIdleFunc(RF_DagNode_t *);
   44 int rf_DiskReadMirrorPartitionFunc(RF_DagNode_t *);
   45 int rf_DiskReadMirrorUndoFunc(RF_DagNode_t *);
   46 int rf_ParityLogUpdateFunc(RF_DagNode_t *);
   47 int rf_ParityLogOverwriteFunc(RF_DagNode_t *);
   48 int rf_ParityLogUpdateUndoFunc(RF_DagNode_t *);
   49 int rf_ParityLogOverwriteUndoFunc(RF_DagNode_t *);
   50 int rf_NullNodeFunc(RF_DagNode_t *);
   51 int rf_NullNodeUndoFunc(RF_DagNode_t *);
   52 int rf_DiskReadFuncForThreads(RF_DagNode_t *);
   53 int rf_DiskWriteFuncForThreads(RF_DagNode_t *);
   54 int rf_DiskUndoFunc(RF_DagNode_t *);
   55 int rf_DiskUnlockFuncForThreads(RF_DagNode_t *);
   56 int rf_GenericWakeupFunc(RF_DagNode_t *, int);
   57 int rf_RegularXorFunc(RF_DagNode_t *);
   58 int rf_SimpleXorFunc(RF_DagNode_t *);
   59 int rf_RecoveryXorFunc(RF_DagNode_t *);
   60 int rf_XorIntoBuffer(RF_Raid_t *, RF_PhysDiskAddr_t *, char *, char *, void *);
   61 int rf_bxor(char *, char *, int, void *);
   62 int rf_longword_bxor(unsigned long *, unsigned long *, int, void *);
   63 int rf_longword_bxor3(unsigned long *, unsigned long *, unsigned long *,
   64         unsigned long *, int, void *);
   65 int rf_bxor3(unsigned char *, unsigned char *, unsigned char *,
   66         unsigned char *, unsigned long, void *);
   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 *);
   79 /* Macros for manipulating the param[3] in a read or write node. */
   80 #define RF_CREATE_PARAM3(pri,lk,unlk,wru)                               \
   81         (((RF_uint64) (((wru & 0xFFFFFF) << 8) | ((lk) ? 0x10 : 0) |    \
   82                        ((unlk) ? 0x20 : 0) | ((pri) & 0xF))))
   83 #define RF_EXTRACT_PRIORITY(_x_)                                        \
   84         ((((unsigned) ((unsigned long)(_x_))) >> 0) & 0x0F)
   85 #define RF_EXTRACT_LOCK_FLAG(_x_)                                       \
   86         ((((unsigned) ((unsigned long)(_x_))) >> 4) & 0x1)
   87 #define RF_EXTRACT_UNLOCK_FLAG(_x_)                                     \
   88         ((((unsigned) ((unsigned long)(_x_))) >> 5) & 0x1)
   89 #define RF_EXTRACT_RU(_x_)                                              \
   90         ((((unsigned) ((unsigned long)(_x_))) >> 8) & 0xFFFFFF)
   92 #endif  /* !_RF__RF_DAGFUNCS_H_ */