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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: phdsk.c,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 register every physical disk into the system |
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| 30 | (actually only for informational purpose). |
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| 31 | |||
| 32 | ***************************************/ |
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| 33 | |||
| 34 | /* |
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| 35 | * Copyright (C) 1999 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 | #include "glue.h" |
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| 54 | #include <fs/magic.h> |
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| 55 | |||
| 56 | #include "phdsk.h" |
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| 57 | |||
| 58 | /*+ an entry for every hard disk into the system +*/ |
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| 59 | static struct phdskinfo phdsk[MAXPHDSK]; |
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| 60 | |||
| 61 | /*++++++++++++++++++++++++++++++++++++++ |
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| 62 | |||
| 63 | Initialize the interal data structures. Must be called prior of every |
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| 64 | routine in this module. |
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| 65 | |||
| 66 | ++++++++++++++++++++++++++++++++++++++*/ |
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| 67 | |||
| 68 | void phdsk_init(void) |
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| 69 | { |
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| 70 | int i; |
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| 71 | for (i=0;i<MAXPHDSK;i++) { |
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| 72 | |||
| 73 | #ifdef _PARANOIA |
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| 74 | phdsk[i].magic=PHDSK_MAGIC; |
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| 75 | #endif |
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| 76 | |||
| 77 | memcpy(phdsk[i].pd_name,"noname",7); |
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| 78 | |||
| 79 | phdsk[i].pd_device=0; |
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| 80 | phdsk[i].pd_size=0; |
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| 81 | phdsk[i].pd_sectsize=0; |
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| 82 | |||
| 83 | #ifdef IDE_BLOCK_DEVICE |
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| 84 | phdsk[i].pd_ide_check_geom=0; |
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| 85 | #endif |
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| 86 | |||
| 87 | phdsk[i].pd_phgeom.cyls=0; |
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| 88 | phdsk[i].pd_phgeom.heads=0; |
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| 89 | phdsk[i].pd_phgeom.sectors=0; |
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| 90 | |||
| 91 | phdsk[i].pd_logeom.cyls=0; |
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| 92 | phdsk[i].pd_logeom.heads=0; |
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| 93 | phdsk[i].pd_logeom.sectors=0; |
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| 94 | } |
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| 95 | } |
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| 96 | |||
| 97 | /*++++++++++++++++++++++++++++++++++++++ |
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| 98 | |||
| 99 | Every block device module shall call this function to inform |
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| 100 | the system that a physical hard-disk in available to the system. |
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| 101 | |||
| 102 | struct phdskinfo *phdsk_register |
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| 103 | return a pointer to a phdskinfo structure that hold hard disk information |
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| 104 | or NULL in case of error |
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| 105 | |||
| 106 | struct phdskinfo *disk |
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| 107 | information on the physical hard disk |
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| 108 | ++++++++++++++++++++++++++++++++++++++*/ |
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| 109 | |||
| 110 | struct phdskinfo *phdsk_register(struct phdskinfo *disk) |
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| 111 | { |
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| 112 | int i; |
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| 113 | |||
| 114 | for (i=0;i<MAXPHDSK;i++) |
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| 115 | if (phdsk[i].pd_device==0) break; |
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| 116 | if (i==MAXPHDSK||disk->pd_device==0) return NULL; |
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| 117 | |||
| 118 | //cprintf("pdisk dev %i\n",disk->pd_device); |
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| 119 | memcpy(phdsk+i,disk,sizeof(struct phdskinfo)); |
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| 120 | //cprintf("pdisk dev %i\n",(phdsk+i)->pd_device); |
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| 121 | |||
| 122 | return phdsk+i; |
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| 123 | } |