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Annotation of sys/dev/raidframe/rf_dagfuncs.h, Revision 1.1.1.1

1.1       nbrk        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 $    */
                      3:
                      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:  */
                     30:
                     31: /*****************************************************************************
                     32:  *
                     33:  * dagfuncs.h -- Header file for DAG node execution routines.
                     34:  *
                     35:  *****************************************************************************/
                     36:
                     37: #ifndef        _RF__RF_DAGFUNCS_H_
                     38: #define        _RF__RF_DAGFUNCS_H_
                     39:
                     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 *);
                     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)                               \
                     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)
                     91:
                     92: #endif /* !_RF__RF_DAGFUNCS_H_ */