diff options
Diffstat (limited to 'sys/dev/raidframe/rf_sstf.h')
| -rw-r--r-- | sys/dev/raidframe/rf_sstf.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_sstf.h b/sys/dev/raidframe/rf_sstf.h new file mode 100644 index 0000000..2fc1c0d --- /dev/null +++ b/sys/dev/raidframe/rf_sstf.h @@ -0,0 +1,70 @@ +/* $FreeBSD$ */ +/* $NetBSD: rf_sstf.h,v 1.3 1999/02/05 00:06:17 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. + */ + +#ifndef _RF__RF_SSTF_H_ +#define _RF__RF_SSTF_H_ + +#include <dev/raidframe/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_ */ |
