1 /* $NetBSD: rf_desc.h,v 1.22 2021/07/23 02:35:14 oster Exp $ */ 2 /* 3 * Copyright (c) 1995 Carnegie-Mellon University. 4 * All rights reserved. 5 * 6 * Author: Mark Holland 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_DESC_H_ 30 #define _RF__RF_DESC_H_ 31 32 #include <dev/raidframe/raidframevar.h> 33 34 #include "rf_archs.h" 35 #include "rf_etimer.h" 36 #include "rf_dag.h" 37 #include "rf_layout.h" 38 39 struct RF_RaidReconDesc_s { 40 RF_Raid_t *raidPtr; /* raid device descriptor */ 41 RF_RowCol_t col; /* col of failed disk */ 42 RF_RaidDisk_t *spareDiskPtr; /* describes target disk for recon 43 * (not used in dist sparing) */ 44 int numDisksDone; /* the number of surviving disks that have 45 * completed their work */ 46 RF_RowCol_t scol; /* col ID of the spare disk (not used in dist 47 * sparing) */ 48 /* 49 * Prevent recon from hogging CPU 50 */ 51 RF_Etimer_t recon_exec_timer; 52 RF_uint64 reconExecTimerRunning; 53 RF_uint64 reconExecTicks; 54 RF_uint64 maxReconExecTicks; 55 56 #if RF_RECON_STATS > 0 57 RF_uint64 hsStallCount; /* head sep stall count */ 58 RF_uint64 numReconExecDelays; 59 RF_uint64 numReconEventWaits; 60 #endif /* RF_RECON_STATS > 0 */ 61 RF_RaidReconDesc_t *next; 62 }; 63 64 struct RF_RaidAccessDesc_s { 65 RF_Raid_t *raidPtr; /* raid device descriptor */ 66 RF_IoType_t type; /* read or write */ 67 RF_RaidAddr_t raidAddress; /* starting address in raid address 68 * space */ 69 RF_SectorCount_t numBlocks; /* number of blocks (sectors) to 70 * transfer */ 71 RF_StripeCount_t numStripes; /* number of stripes involved in 72 * access */ 73 void *bufPtr; /* pointer to data buffer */ 74 RF_RaidAccessFlags_t flags; /* flags controlling operation */ 75 int state; /* index into states telling how far along the 76 * RAID operation has gotten */ 77 const RF_AccessState_t *states; /* array of states to be run */ 78 int status; /* pass/fail status of the last operation */ 79 int numRetries; /* number of times this IO has been attempted */ 80 RF_DagList_t *dagList; /* list of dag lists, one list per stripe */ 81 RF_VoidPointerListElem_t *iobufs; /* iobufs that need to be cleaned 82 up at the end of this IO */ 83 RF_VoidPointerListElem_t *stripebufs; /* stripe buffers that need to 84 be cleaned up at the end of 85 this IO */ 86 RF_AccessStripeMapHeader_t *asmap; /* the asm for this I/O */ 87 struct buf *bp; /* buf pointer for this RAID acc */ 88 RF_AccTraceEntry_t tracerec; /* perf monitoring information for a 89 * user access (not for dag stats) */ 90 void (*callbackFunc) (void *); /* callback function for this 91 * I/O */ 92 void *callbackArg; /* arg to give to callback func */ 93 RF_RaidAccessDesc_t *next; 94 RF_Etimer_t timer; /* used for timing this access */ 95 }; 96 #endif /* !_RF__RF_DESC_H_ */ 97