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| 2 | pj | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
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| 3 | * |
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| 4 | * Coordinators: |
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| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 7 | * |
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| 8 | * Authors : |
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| 9 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 10 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
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| 11 | * Luca Abeni <luca@gandalf.sssup.it> |
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| 12 | * (see the web pages for full authors list) |
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| 13 | * |
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| 14 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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| 15 | * |
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| 16 | * http://www.sssup.it |
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| 17 | * http://retis.sssup.it |
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| 18 | * http://shark.sssup.it |
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| 19 | */ |
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| 20 | |||
| 21 | /*************************************** |
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| 22 | |||
| 23 | CVS : $Id: bqueue.h,v 1.1.1.1 2002-03-29 14:12:49 pj Exp $ |
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| 24 | |||
| 25 | Revision: $Revision: 1.1.1.1 $ |
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| 26 | |||
| 27 | Last update: $Date: 2002-03-29 14:12:49 $ |
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| 28 | |||
| 29 | This module is responsable of the protocol between the IDE device driver |
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| 30 | interface and the host (the computer). |
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| 31 | |||
| 32 | ***************************************/ |
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| 33 | |||
| 34 | /* |
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| 35 | * Copyright (C) 1999,2000 Massimiliano Giorgi |
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| 36 | * |
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| 37 | * This program is free software; you can redistribute it and/or modify |
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| 38 | * it under the terms of the GNU General Public License as published by |
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| 39 | * the Free Software Foundation; either version 2 of the License, or |
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| 40 | * (at your option) any later version. |
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| 41 | * |
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| 42 | * This program is distributed in the hope that it will be useful, |
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| 43 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 44 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 45 | * GNU General Public License for more details. |
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| 46 | * |
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| 47 | * You should have received a copy of the GNU General Public License |
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| 48 | * along with this program; if not, write to the Free Software |
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| 49 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 50 | * |
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| 51 | */ |
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| 52 | |||
| 53 | #ifndef __BQUEUE_H |
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| 54 | #define __BQUEUE_H |
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| 55 | |||
| 56 | struct request_prolog; |
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| 57 | |||
| 58 | #ifdef _SCHED_FCFS |
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| 59 | #include "fcfs/fcfs.h" |
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| 60 | #endif |
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| 61 | #ifdef _SCHED_SSTF |
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| 62 | #include "sstf/sstf.h" |
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| 63 | #endif |
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| 64 | #ifdef _SCHED_LOOK |
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| 65 | #include "look/look.h" |
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| 66 | #endif |
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| 67 | #ifdef _SCHED_CLOOK |
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| 68 | #include "clook/clook.h" |
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| 69 | #endif |
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| 70 | #ifdef _SCHED_EDF |
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| 71 | #include "edf/edf.h" |
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| 72 | #endif |
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| 73 | #ifdef _SCHED_PSCAN |
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| 74 | #include "pscan/pscan.h" |
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| 75 | #endif |
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| 76 | |||
| 77 | #define REQ_DUMMY 0 |
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| 78 | #define REQ_SEEK 1 |
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| 79 | #define REQ_READ 2 |
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| 80 | #define REQ_WRITE 3 |
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| 81 | |||
| 82 | struct request_prologue { |
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| 83 | unsigned sector; |
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| 84 | unsigned head; |
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| 85 | unsigned cylinder; |
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| 86 | unsigned nsectors; |
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| 87 | unsigned operation; |
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| 88 | /*--*/ |
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| 89 | struct request_specific x; |
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| 90 | }; |
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| 91 | #define request_prologue_t struct request_prologue |
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| 92 | |||
| 93 | int bqueue_init(bqueue_t *); |
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| 94 | int bqueue_numelements(bqueue_t *); |
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| 95 | int bqueue_insertrequest(bqueue_t *, struct request_prologue *); |
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| 96 | struct request_prologue *bqueue_getrequest(bqueue_t *); |
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| 97 | int bqueue_removerequest(bqueue_t *); |
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| 98 | |||
| 99 | #endif |