sys/dev/raidframe/rf_pqdeg.h

   1 /*      $NetBSD: rf_pqdeg.h,v 1.4 2001/06/20 03:09:23 oster Exp $       */
   2 /*
   3  * Copyright (c) 1995 Carnegie-Mellon University.
   4  * All rights reserved.
   5  *
   6  * Author: Daniel Stodolsky
   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@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 #ifndef _RF__RF_PQDEG_H_
  30 #define _RF__RF_PQDEG_H_
  31
  32 #if (RF_INCLUDE_PQ > 0) || (RF_INCLUDE_RAID6 > 0)
  33
  34 #include <dev/raidframe/raidframevar.h>
  35
  36 #include "rf_dag.h"
  37
  38 /* extern decl's of the failure mode PQ functions.
  39  * See pddeg.c for nomenclature discussion.
  40  */
  41
  42 /* reads, single failure  */
  43 RF_CREATE_DAG_FUNC_DECL(rf_PQ_100_CreateReadDAG);
  44 /* reads, two failure */
  45 RF_CREATE_DAG_FUNC_DECL(rf_PQ_110_CreateReadDAG);
  46 RF_CREATE_DAG_FUNC_DECL(rf_PQ_101_CreateReadDAG);
  47 RF_CREATE_DAG_FUNC_DECL(rf_PQ_200_CreateReadDAG);
  48
  49 /* writes, single failure */
  50 RF_CREATE_DAG_FUNC_DECL(rf_PQ_100_CreateWriteDAG);
  51 RF_CREATE_DAG_FUNC_DECL(rf_PQ_010_CreateSmallWriteDAG);
  52 RF_CREATE_DAG_FUNC_DECL(rf_PQ_010_CreateLargeWriteDAG);
  53 RF_CREATE_DAG_FUNC_DECL(rf_PQ_001_CreateSmallWriteDAG);
  54 RF_CREATE_DAG_FUNC_DECL(rf_PQ_001_CreateLargeWriteDAG);
  55
  56 /* writes, double failure */
  57 RF_CREATE_DAG_FUNC_DECL(rf_PQ_011_CreateWriteDAG);
  58 RF_CREATE_DAG_FUNC_DECL(rf_PQ_110_CreateWriteDAG);
  59 RF_CREATE_DAG_FUNC_DECL(rf_PQ_101_CreateWriteDAG);
  60 RF_CREATE_DAG_FUNC_DECL(rf_PQ_200_CreateWriteDAG);
  61
  62 typedef RF_uint32 RF_ua32_t[32];
  63 typedef RF_uint8 RF_ua1024_t[1024];
  64
  65 extern RF_ua32_t rf_rn;
  66 extern RF_ua32_t rf_qfor[32];
  67 #ifndef _KERNEL                 /* we don't support PQ in the kernel yet, so
  68                                  * don't link in this monster table */
  69 extern RF_ua1024_t rf_qinv[29 * 29];
  70 #else                           /* !_KERNEL */
  71 extern RF_ua1024_t rf_qinv[1];
  72 #endif                          /* !_KERNEL */
  73
  74 #endif /* (RF_INCLUDE_PQ > 0) || (RF_INCLUDE_RAID6 > 0) */
  75
  76 #endif                          /* !_RF__RF_PQDEG_H_ */