Rev 3 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
||
| 3 | * |
||
| 4 | * Coordinators: |
||
| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
||
| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
||
| 7 | * |
||
| 8 | * Authors : |
||
| 9 | * Paolo Gai <pj@gandalf.sssup.it> |
||
| 10 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
||
| 11 | * Luca Abeni <luca@gandalf.sssup.it> |
||
| 12 | * (see the web pages for full authors list) |
||
| 13 | * |
||
| 14 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
||
| 15 | * |
||
| 16 | * http://www.sssup.it |
||
| 17 | * http://retis.sssup.it |
||
| 18 | * http://shark.sssup.it |
||
| 19 | */ |
||
| 20 | |||
| 21 | /* |
||
| 22 | * Copyright (C) 2000 Massimiliano Giorgi |
||
| 23 | * |
||
| 24 | * This program is free software; you can redistribute it and/or modify |
||
| 25 | * it under the terms of the GNU General Public License as published by |
||
| 26 | * the Free Software Foundation; either version 2 of the License, or |
||
| 27 | * (at your option) any later version. |
||
| 28 | * |
||
| 29 | * This program is distributed in the hope that it will be useful, |
||
| 30 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
| 31 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
| 32 | * GNU General Public License for more details. |
||
| 33 | * |
||
| 34 | * You should have received a copy of the GNU General Public License |
||
| 35 | * along with this program; if not, write to the Free Software |
||
| 36 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||
| 37 | * |
||
| 38 | */ |
||
| 39 | |||
| 40 | /* |
||
| 38 | pj | 41 | * CVS : $Id: bd_pscan.c,v 1.2 2003-01-07 17:07:50 pj Exp $ |
| 2 | pj | 42 | * |
| 43 | * File: $File$ |
||
| 38 | pj | 44 | * Revision: $Revision: 1.2 $ |
| 45 | * Last update: $Date: 2003-01-07 17:07:50 $ |
||
| 2 | pj | 46 | */ |
| 47 | |||
| 48 | #include <modules/bd_pscan.h> |
||
| 49 | |||
| 50 | #include <ll/ll.h> |
||
| 51 | #include <ll/string.h> |
||
| 52 | #include <ll/stdio.h> |
||
| 53 | #include <kernel/const.h> |
||
| 54 | #include <sys/types.h> |
||
| 55 | #include <kernel/var.h> |
||
| 56 | #include <kernel/func.h> |
||
| 57 | #include <kernel/assert.h> |
||
| 58 | |||
| 59 | #define LOWESTPRIORITY 255 |
||
| 60 | #define HIGHERPRIORITY 0 |
||
| 61 | |||
| 62 | static int mylevel=-1; |
||
| 63 | |||
| 64 | typedef struct TAGbd_pscan_resource_des |
||
| 65 | { |
||
| 66 | resource_des rd; |
||
| 67 | int priority[MAX_PROC]; |
||
| 68 | } bd_pscan_resource_des; |
||
| 69 | |||
| 38 | pj | 70 | static int res_register(RLEVEL l, PID p, RES_MODEL *r) |
| 2 | pj | 71 | { |
| 38 | pj | 72 | bd_pscan_resource_des *m=(bd_pscan_resource_des*)(resource_table[l]); |
| 73 | BDPSCAN_RES_MODEL *rm; |
||
| 74 | |||
| 75 | if (r->rclass!=BDEDF_RCLASS) |
||
| 2 | pj | 76 | return -1; |
| 38 | pj | 77 | if (r->level && r->level !=l) |
| 78 | return -1; |
||
| 79 | |||
| 80 | rm=(BDPSCAN_RES_MODEL*)r; |
||
| 2 | pj | 81 | assertk(mylevel==l); |
| 82 | m->priority[p]=rm->priority; |
||
| 38 | pj | 83 | |
| 84 | return 0; |
||
| 2 | pj | 85 | } |
| 86 | |||
| 87 | static void res_detach(RLEVEL l, PID p) |
||
| 88 | { |
||
| 89 | bd_pscan_resource_des *m=(bd_pscan_resource_des*)(resource_table[l]); |
||
| 90 | assertk(mylevel==l); |
||
| 91 | m->priority[p]=LOWESTPRIORITY; |
||
| 92 | } |
||
| 93 | |||
| 38 | pj | 94 | RLEVEL BD_PSCAN_register_module(void) |
| 2 | pj | 95 | { |
| 96 | RLEVEL l; |
||
| 97 | bd_pscan_resource_des *m; |
||
| 98 | int i; |
||
| 99 | |||
| 100 | /* request an entry in the level_table */ |
||
| 101 | l=resource_alloc_descriptor(); |
||
| 102 | |||
| 103 | /* alloc the space needed for the EDF_level_des */ |
||
| 104 | m=(bd_pscan_resource_des*)kern_alloc(sizeof(bd_pscan_resource_des)); |
||
| 105 | |||
| 106 | /* update the level_table with the new entry */ |
||
| 107 | resource_table[l]=(resource_des*)m; |
||
| 108 | |||
| 109 | /* fill the resource_des descriptor */ |
||
| 110 | m->rd.rtype=DEFAULT_RTYPE; |
||
| 111 | m->rd.res_register=res_register; |
||
| 112 | m->rd.res_detach=res_detach; |
||
| 113 | |||
| 114 | for (i=0;i<MAX_PROC;i++) m->priority[i]=LOWESTPRIORITY; |
||
| 115 | |||
| 116 | assertk(mylevel==-1); |
||
| 117 | mylevel=l; |
||
| 38 | pj | 118 | |
| 119 | return l; |
||
| 2 | pj | 120 | } |
| 121 | |||
| 122 | int bd_pscan_getpriority(void) |
||
| 123 | { |
||
| 124 | bd_pscan_resource_des *m; |
||
| 125 | if (mylevel==-1) return LOWESTPRIORITY; |
||
| 126 | m=(bd_pscan_resource_des*)(resource_table[mylevel]); |
||
| 127 | return m->priority[exec_shadow]; |
||
| 128 | } |