38a3987b69
Carnegie Mellon University. Full RAID implementation, including levels 0, 1, 4, 5, 6, parity logging, and a few other goodies. Ported to NetBSD by Greg Oster.
90 lines
2.8 KiB
C
90 lines
2.8 KiB
C
/* $NetBSD: rf_sstf.h,v 1.1 1998/11/13 04:20:34 oster Exp $ */
|
|
/*
|
|
* Copyright (c) 1995 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Jim Zelenka
|
|
*
|
|
* 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_sstf.h,v
|
|
* Revision 1.6 1996/06/18 20:53:11 jimz
|
|
* fix up disk queueing (remove configure routine,
|
|
* add shutdown list arg to create routines)
|
|
*
|
|
* Revision 1.5 1996/06/13 20:42:08 jimz
|
|
* add scan, cscan
|
|
*
|
|
* Revision 1.4 1996/06/07 22:26:27 jimz
|
|
* type-ify which_ru (RF_ReconUnitNum_t)
|
|
*
|
|
* Revision 1.3 1996/06/07 21:33:04 jimz
|
|
* begin using consistent types for sector numbers,
|
|
* stripe numbers, row+col numbers, recon unit numbers
|
|
*
|
|
* Revision 1.2 1996/06/06 01:22:24 jimz
|
|
* minor cleanup
|
|
*
|
|
* Revision 1.1 1996/06/05 19:17:40 jimz
|
|
* Initial revision
|
|
*
|
|
*/
|
|
|
|
#ifndef _RF__RF_SSTF_H_
|
|
#define _RF__RF_SSTF_H_
|
|
|
|
#include "rf_diskqueue.h"
|
|
|
|
typedef struct RF_SstfQ_s {
|
|
RF_DiskQueueData_t *queue;
|
|
RF_DiskQueueData_t *qtail;
|
|
int qlen;
|
|
} RF_SstfQ_t;
|
|
|
|
typedef struct RF_Sstf_s {
|
|
RF_SstfQ_t left;
|
|
RF_SstfQ_t right;
|
|
RF_SstfQ_t lopri;
|
|
RF_SectorNum_t last_sector;
|
|
int dir;
|
|
int allow_reverse;
|
|
} RF_Sstf_t;
|
|
|
|
void *rf_SstfCreate(RF_SectorCount_t sect_per_disk,
|
|
RF_AllocListElem_t *cl_list, RF_ShutdownList_t **listp);
|
|
void *rf_ScanCreate(RF_SectorCount_t sect_per_disk,
|
|
RF_AllocListElem_t *cl_list, RF_ShutdownList_t **listp);
|
|
void *rf_CscanCreate(RF_SectorCount_t sect_per_disk,
|
|
RF_AllocListElem_t *cl_list, RF_ShutdownList_t **listp);
|
|
void rf_SstfEnqueue(void *qptr, RF_DiskQueueData_t *req, int priority);
|
|
RF_DiskQueueData_t *rf_SstfDequeue(void *qptr);
|
|
RF_DiskQueueData_t *rf_SstfPeek(void *qptr);
|
|
int rf_SstfPromote(void *qptr, RF_StripeNum_t parityStripeID,
|
|
RF_ReconUnitNum_t which_ru);
|
|
RF_DiskQueueData_t *rf_ScanDequeue(void *qptr);
|
|
RF_DiskQueueData_t *rf_ScanPeek(void *qptr);
|
|
RF_DiskQueueData_t *rf_CscanDequeue(void *qptr);
|
|
RF_DiskQueueData_t *rf_CscanPeek(void *qptr);
|
|
|
|
#endif /* !_RF__RF_SSTF_H_ */
|