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Annotation of sys/dev/raidframe/rf_dagfuncs.h, Revision 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_ */