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Diffstat (limited to 'sys/dev/raidframe/rf_desc.h')
| -rw-r--r-- | sys/dev/raidframe/rf_desc.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_desc.h b/sys/dev/raidframe/rf_desc.h new file mode 100644 index 00000000000..a1a8e4f3684 --- /dev/null +++ b/sys/dev/raidframe/rf_desc.h @@ -0,0 +1,181 @@ +/* $OpenBSD: rf_desc.h,v 1.1 1999/01/11 14:29:15 niklas Exp $ */ +/* $NetBSD: rf_desc.h,v 1.1 1998/11/13 04:20:28 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. + */ + +/* + * : + * Log: rf_desc.h,v + * Revision 1.29 1996/07/22 19:52:16 jimz + * switched node params to RF_DagParam_t, a union of + * a 64-bit int and a void *, for better portability + * attempted hpux port, but failed partway through for + * lack of a single C compiler capable of compiling all + * source files + * + * Revision 1.28 1996/06/07 22:49:22 jimz + * fix up raidPtr typing + * + * Revision 1.27 1996/06/07 21:33:04 jimz + * begin using consistent types for sector numbers, + * stripe numbers, row+col numbers, recon unit numbers + * + * Revision 1.26 1996/06/05 18:06:02 jimz + * Major code cleanup. The Great Renaming is now done. + * Better modularity. Better typing. Fixed a bunch of + * synchronization bugs. Made a lot of global stuff + * per-desc or per-array. Removed dead code. + * + * Revision 1.25 1996/06/02 17:31:48 jimz + * Moved a lot of global stuff into array structure, where it belongs. + * Fixed up paritylogging, pss modules in this manner. Some general + * code cleanup. Removed lots of dead code, some dead files. + * + * Revision 1.24 1996/05/30 11:29:41 jimz + * Numerous bug fixes. Stripe lock release code disagreed with the taking code + * about when stripes should be locked (I made it consistent: no parity, no lock) + * There was a lot of extra serialization of I/Os which I've removed- a lot of + * it was to calculate values for the cache code, which is no longer with us. + * More types, function, macro cleanup. Added code to properly quiesce the array + * on shutdown. Made a lot of stuff array-specific which was (bogusly) general + * before. Fixed memory allocation, freeing bugs. + * + * Revision 1.23 1996/05/27 18:56:37 jimz + * more code cleanup + * better typing + * compiles in all 3 environments + * + * Revision 1.22 1996/05/24 22:17:04 jimz + * continue code + namespace cleanup + * typed a bunch of flags + * + * Revision 1.21 1996/05/24 04:28:55 jimz + * release cleanup ckpt + * + * Revision 1.20 1996/05/23 21:46:35 jimz + * checkpoint in code cleanup (release prep) + * lots of types, function names have been fixed + * + * Revision 1.19 1996/05/23 00:33:23 jimz + * code cleanup: move all debug decls to rf_options.c, all extern + * debug decls to rf_options.h, all debug vars preceded by rf_ + * + * Revision 1.18 1996/05/18 19:51:34 jimz + * major code cleanup- fix syntax, make some types consistent, + * add prototypes, clean out dead code, et cetera + * + * Revision 1.17 1995/12/01 15:58:43 root + * added copyright info + * + * Revision 1.16 1995/11/19 16:31:30 wvcii + * descriptors now contain an array of dag lists as opposed to a dag header + * + * Revision 1.15 1995/11/07 16:24:17 wvcii + * updated def of _AccessState + * + */ + +#ifndef _RF__RF_DESC_H_ +#define _RF__RF_DESC_H_ + +#include "rf_archs.h" +#include "rf_types.h" +#include "rf_etimer.h" +#include "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) */ +#ifdef KERNEL + /* + * Prevent recon from hogging CPU + */ + RF_Etimer_t recon_exec_timer; + RF_uint64 reconExecTimerRunning; + RF_uint64 reconExecTicks; + RF_uint64 maxReconExecTicks; +#endif /* KERNEL */ + +#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 */ + +#if !defined(KERNEL) && !defined(SIMULATE) + caddr_t obufPtr; /* real pointer to data buffer */ +#endif /* !KERNEL && !SIMULATE */ + + 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 */ + int tid; /* debug only, user-level only: thread id of thr that did this access */ + + 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) + +#ifdef SIMULATE + RF_Owner_t owner; + int async_flag; +#endif /* SIMULATE */ + + RF_Etimer_t timer; /* used for timing this access */ +}; + +#endif /* !_RF__RF_DESC_H_ */ |