diff options
Diffstat (limited to 'sys/dev/raidframe/rf_desc.h')
| -rw-r--r-- | sys/dev/raidframe/rf_desc.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_desc.h b/sys/dev/raidframe/rf_desc.h new file mode 100644 index 0000000..8a6951b --- /dev/null +++ b/sys/dev/raidframe/rf_desc.h @@ -0,0 +1,113 @@ +/* $FreeBSD$ */ +/* $NetBSD: rf_desc.h,v 1.5 2000/01/09 00:00:18 oster Exp $ */ +/* + * Copyright (c) 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Mark Holland + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +#ifndef _RF__RF_DESC_H_ +#define _RF__RF_DESC_H_ + +#include <dev/raidframe/rf_archs.h> +#include <dev/raidframe/rf_types.h> +#include <dev/raidframe/rf_etimer.h> +#include <dev/raidframe/rf_dag.h> + +struct RF_RaidReconDesc_s { + RF_Raid_t *raidPtr; /* raid device descriptor */ + RF_RowCol_t row; /* row of failed disk */ + RF_RowCol_t col; /* col of failed disk */ + int state; /* how far along the reconstruction operation + * has gotten */ + RF_RaidDisk_t *spareDiskPtr; /* describes target disk for recon + * (not used in dist sparing) */ + int numDisksDone; /* the number of surviving disks that have + * completed their work */ + RF_RowCol_t srow; /* row ID of the spare disk (not used in dist + * sparing) */ + RF_RowCol_t scol; /* col ID of the spare disk (not used in dist + * sparing) */ + /* + * Prevent recon from hogging CPU + */ + RF_Etimer_t recon_exec_timer; + RF_uint64 reconExecTimerRunning; + RF_uint64 reconExecTicks; + RF_uint64 maxReconExecTicks; + +#if RF_RECON_STATS > 0 + RF_uint64 hsStallCount; /* head sep stall count */ + RF_uint64 numReconExecDelays; + RF_uint64 numReconEventWaits; +#endif /* RF_RECON_STATS > 0 */ + RF_RaidReconDesc_t *next; +}; + +struct RF_RaidAccessDesc_s { + RF_Raid_t *raidPtr; /* raid device descriptor */ + RF_IoType_t type; /* read or write */ + RF_RaidAddr_t raidAddress; /* starting address in raid address + * space */ + RF_SectorCount_t numBlocks; /* number of blocks (sectors) to + * transfer */ + RF_StripeCount_t numStripes; /* number of stripes involved in + * access */ + caddr_t bufPtr; /* pointer to data buffer */ + RF_RaidAccessFlags_t flags; /* flags controlling operation */ + int state; /* index into states telling how far along the + * RAID operation has gotten */ + RF_AccessState_t *states; /* array of states to be run */ + int status; /* pass/fail status of the last operation */ + RF_DagList_t *dagArray; /* array of dag lists, one list per stripe */ + RF_AccessStripeMapHeader_t *asmap; /* the asm for this I/O */ + void *bp; /* buf pointer for this RAID acc. ignored + * outside the kernel */ + RF_DagHeader_t **paramDAG; /* allows the DAG to be returned to + * the caller after I/O completion */ + RF_AccessStripeMapHeader_t **paramASM; /* allows the ASM to be + * returned to the caller + * after I/O completion */ + RF_AccTraceEntry_t tracerec; /* perf monitoring information for a + * user access (not for dag stats) */ + void (*callbackFunc) (RF_CBParam_t); /* callback function for this + * I/O */ + void *callbackArg; /* arg to give to callback func */ + + RF_AllocListElem_t *cleanupList; /* memory to be freed at the + * end of the access */ + + RF_RaidAccessDesc_t *next; + RF_RaidAccessDesc_t *head; + + int numPending; + + RF_DECLARE_MUTEX(mutex) /* these are used to implement + * blocking I/O */ + RF_DECLARE_COND(cond) + int async_flag; + + RF_Etimer_t timer; /* used for timing this access */ +}; +#endif /* !_RF__RF_DESC_H_ */ |
