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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 | * Copyright (C) 2000 Massimiliano Giorgi |
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| 23 | * |
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| 24 | * This program is free software; you can redistribute it and/or modify |
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| 25 | * it under the terms of the GNU General Public License as published by |
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| 26 | * the Free Software Foundation; either version 2 of the License, or |
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| 27 | * (at your option) any later version. |
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| 28 | * |
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| 29 | * This program is distributed in the hope that it will be useful, |
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| 30 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 31 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 32 | * GNU General Public License for more details. |
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| 33 | * |
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| 34 | * You should have received a copy of the GNU General Public License |
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| 35 | * along with this program; if not, write to the Free Software |
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| 36 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 37 | * |
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| 38 | */ |
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| 39 | |||
| 40 | /* |
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| 41 | * CVS : $Id: bd_pscan.c,v 1.1.1.1 2002-03-29 14:12:52 pj Exp $ |
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| 42 | * |
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| 43 | * File: $File$ |
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| 44 | * Revision: $Revision: 1.1.1.1 $ |
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| 45 | * Last update: $Date: 2002-03-29 14:12:52 $ |
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| 46 | */ |
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| 47 | |||
| 48 | #include <modules/bd_pscan.h> |
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| 49 | |||
| 50 | #include <ll/ll.h> |
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| 51 | #include <ll/string.h> |
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| 52 | #include <ll/stdio.h> |
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| 53 | #include <kernel/const.h> |
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| 54 | #include <modules/codes.h> |
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| 55 | #include <sys/types.h> |
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| 56 | #include <kernel/var.h> |
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| 57 | #include <kernel/func.h> |
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| 58 | #include <kernel/assert.h> |
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| 59 | |||
| 60 | #define LOWESTPRIORITY 255 |
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| 61 | #define HIGHERPRIORITY 0 |
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| 62 | |||
| 63 | static int mylevel=-1; |
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| 64 | |||
| 65 | typedef struct TAGbd_pscan_resource_des |
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| 66 | { |
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| 67 | resource_des rd; |
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| 68 | int priority[MAX_PROC]; |
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| 69 | } bd_pscan_resource_des; |
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| 70 | |||
| 71 | static int res_level_accept_resource_model(RLEVEL l, RES_MODEL *r) |
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| 72 | { |
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| 73 | assertk(mylevel==l); |
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| 74 | if (r->rclass==BDPSCAN_RCLASS||r->rclass==(BDPSCAN_RCLASS|l)) |
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| 75 | return 0; |
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| 76 | else |
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| 77 | return -1; |
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| 78 | } |
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| 79 | |||
| 80 | static void res_register(RLEVEL l, PID p, RES_MODEL *r) |
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| 81 | { |
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| 82 | bd_pscan_resource_des *m=(bd_pscan_resource_des*)(resource_table[l]); |
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| 83 | BDPSCAN_RES_MODEL *rm=(BDPSCAN_RES_MODEL*)r; |
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| 84 | assertk(mylevel==l); |
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| 85 | m->priority[p]=rm->priority; |
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| 86 | } |
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| 87 | |||
| 88 | static void res_detach(RLEVEL l, PID p) |
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| 89 | { |
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| 90 | bd_pscan_resource_des *m=(bd_pscan_resource_des*)(resource_table[l]); |
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| 91 | assertk(mylevel==l); |
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| 92 | m->priority[p]=LOWESTPRIORITY; |
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| 93 | } |
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| 94 | |||
| 95 | static void res_resource_status(void) |
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| 96 | {} |
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| 97 | |||
| 98 | void BD_PSCAN_register_module(void) |
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| 99 | { |
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| 100 | RLEVEL l; |
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| 101 | bd_pscan_resource_des *m; |
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| 102 | int i; |
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| 103 | |||
| 104 | /* request an entry in the level_table */ |
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| 105 | l=resource_alloc_descriptor(); |
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| 106 | |||
| 107 | /* alloc the space needed for the EDF_level_des */ |
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| 108 | m=(bd_pscan_resource_des*)kern_alloc(sizeof(bd_pscan_resource_des)); |
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| 109 | |||
| 110 | /* update the level_table with the new entry */ |
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| 111 | resource_table[l]=(resource_des*)m; |
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| 112 | |||
| 113 | /* fill the resource_des descriptor */ |
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| 114 | strcpy(m->rd.res_name,BDPSCAN_MODULENAME); |
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| 115 | m->rd.res_code=BDPSCAN_MODULE_CODE; |
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| 116 | m->rd.res_version=BDPSCAN_MODULE_VERSION; |
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| 117 | m->rd.rtype=DEFAULT_RTYPE; |
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| 118 | m->rd.resource_status=res_resource_status; |
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| 119 | m->rd.level_accept_resource_model=res_level_accept_resource_model; |
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| 120 | m->rd.res_register=res_register; |
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| 121 | m->rd.res_detach=res_detach; |
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| 122 | |||
| 123 | for (i=0;i<MAX_PROC;i++) m->priority[i]=LOWESTPRIORITY; |
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| 124 | |||
| 125 | assertk(mylevel==-1); |
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| 126 | mylevel=l; |
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| 127 | } |
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| 128 | |||
| 129 | int bd_pscan_getpriority(void) |
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| 130 | { |
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| 131 | bd_pscan_resource_des *m; |
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| 132 | if (mylevel==-1) return LOWESTPRIORITY; |
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| 133 | m=(bd_pscan_resource_des*)(resource_table[mylevel]); |
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| 134 | return m->priority[exec_shadow]; |
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| 135 | } |