| 1 | /* $NetBSD: rf_fifo.h,v 1.6 2005/12/11 12:23:37 christos 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 | /* |
| 30 | * rf_fifo.h -- prioritized FIFO queue code. |
| 31 | * |
| 32 | * 4-9-93 Created (MCH) |
| 33 | */ |
| 34 | |
| 35 | |
| 36 | #ifndef _RF__RF_FIFO_H_ |
| 37 | #define _RF__RF_FIFO_H_ |
| 38 | |
| 39 | #include <dev/raidframe/raidframevar.h> |
| 40 | |
| 41 | #include "rf_archs.h" |
| 42 | #include "rf_diskqueue.h" |
| 43 | |
| 44 | typedef struct { |
| 45 | RF_DiskQueueData_t *, *; /* high priority requests */ |
| 46 | RF_DiskQueueData_t *, *; /* low priority requests */ |
| 47 | int , ; /* debug only */ |
| 48 | } ; |
| 49 | |
| 50 | extern void * |
| 51 | rf_FifoCreate(RF_SectorCount_t sectPerDisk, |
| 52 | RF_AllocListElem_t * clList, RF_ShutdownList_t ** listp); |
| 53 | extern void |
| 54 | rf_FifoEnqueue(void *q_in, RF_DiskQueueData_t * elem, |
| 55 | int priority); |
| 56 | extern RF_DiskQueueData_t *rf_FifoDequeue(void *q_in); |
| 57 | extern RF_DiskQueueData_t *rf_FifoPeek(void *q_in); |
| 58 | extern int |
| 59 | rf_FifoPromote(void *q_in, RF_StripeNum_t parityStripeID, |
| 60 | RF_ReconUnitNum_t which_ru); |
| 61 | |
| 62 | #endif /* !_RF__RF_FIFO_H_ */ |
| 63 | |