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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 | |||
| 22 | /*************************************** |
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| 23 | |||
| 1007 | mauro | 24 | CVS : $Id: ideglue.c,v 1.3 2005-05-10 17:20:09 mauro Exp $ |
| 2 | pj | 25 | |
| 1007 | mauro | 26 | Revision: $Revision: 1.3 $ |
| 2 | pj | 27 | |
| 1007 | mauro | 28 | Last update: $Date: 2005-05-10 17:20:09 $ |
| 2 | pj | 29 | |
| 30 | This module is used to link the low-level IDE module with |
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| 31 | some kernel specific and particular functionality (it is included |
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| 32 | into idelow.c). |
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| 33 | |||
| 34 | ***************************************/ |
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| 35 | |||
| 36 | /* |
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| 37 | * Copyright (C) 1999,2000 Massimiliano Giorgi |
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| 38 | * |
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| 39 | * This program is free software; you can redistribute it and/or modify |
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| 40 | * it under the terms of the GNU General Public License as published by |
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| 41 | * the Free Software Foundation; either version 2 of the License, or |
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| 42 | * (at your option) any later version. |
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| 43 | * |
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| 44 | * This program is distributed in the hope that it will be useful, |
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| 45 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 46 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 47 | * GNU General Public License for more details. |
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| 48 | * |
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| 49 | * You should have received a copy of the GNU General Public License |
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| 50 | * along with this program; if not, write to the Free Software |
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| 51 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 52 | * |
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| 53 | */ |
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| 54 | |||
| 55 | #include <ll/ll.h> |
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| 56 | #include <kernel/func.h> |
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| 57 | #include <kernel/model.h> |
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| 58 | |||
| 59 | #include "glue.h" |
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| 60 | #include "ide.h" |
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| 61 | |||
| 62 | /* --- */ |
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| 63 | |||
| 64 | /*+ the default values for the server task +*/ |
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| 65 | #define DEFAULT_WCET 200 |
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| 66 | //#define DEFAULT_MIT 1000 |
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| 67 | #define DEFAULT_DL 7000 |
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| 68 | //#define DEFAULT_WCET 200 |
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| 69 | ////#define DEFAULT_MIT 1000 |
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| 70 | //#define DEFAULT_DL 2000 |
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| 71 | |||
| 72 | /* --- */ |
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| 73 | |||
| 74 | void ide_service_request(int ideif); |
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| 75 | |||
| 76 | /*++++++++++++++++++++++++++++++++++++++ |
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| 77 | |||
| 78 | This is the ide server (a task is created for every interface) |
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| 79 | |||
| 80 | TASK ide_server |
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| 81 | never return |
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| 82 | |||
| 83 | int ideif |
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| 84 | interface number (index into ide[]) |
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| 85 | ++++++++++++++++++++++++++++++++++++++*/ |
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| 86 | |||
| 87 | TASK ide_server(int ideif) |
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| 88 | { |
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| 89 | for (;;) { |
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| 90 | task_endcycle(); |
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| 91 | ide_service_request(ideif); |
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| 92 | } |
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| 93 | return NULL; |
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| 94 | } |
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| 95 | |||
| 96 | /*++++++++++++++++++++++++++++++++++++++ |
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| 97 | |||
| 98 | A request is made to the server (the server is activated). |
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| 99 | |||
| 100 | int ideif |
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| 101 | interface that own the server |
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| 102 | ++++++++++++++++++++++++++++++++++++++*/ |
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| 103 | |||
| 104 | void ide_glue_send_request(int ideif) |
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| 105 | { |
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| 106 | task_activate(ide[ideif].server); |
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| 107 | } |
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| 108 | |||
| 109 | /*++++++++++++++++++++++++++++++++++++++ |
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| 110 | |||
| 111 | This function activate an interface: create a server task and set the |
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| 112 | irq handler to wake up this server. |
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| 113 | |||
| 114 | int ide_glue_activate_interface |
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| 115 | return 0 on success, other value on error |
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| 116 | |||
| 117 | int ideif |
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| 118 | interface to activate |
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| 119 | ++++++++++++++++++++++++++++++++++++++*/ |
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| 120 | |||
| 121 | |||
| 122 | TASK ide_dummy(int x) |
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| 123 | { |
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| 124 | for (;;) { |
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| 125 | task_endcycle(); |
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| 126 | } |
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| 127 | return NULL; |
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| 128 | } |
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| 129 | |||
| 130 | |||
| 131 | |||
| 132 | int ide_glue_activate_interface(int ideif) |
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| 133 | { |
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| 134 | struct ide_server_model *parms= |
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| 135 | (struct ide_server_model *)ide_parm_initserver; |
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| 136 | char name[32]; |
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| 137 | SOFT_TASK_MODEL model; |
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| 138 | TIME dl=DEFAULT_DL; |
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| 139 | //TIME mit=DEFAULT_MIT; |
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| 140 | TIME wcet=DEFAULT_WCET; |
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| 141 | |||
| 142 | soft_task_default_model(model); |
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| 143 | if (parms!=NULL) { |
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| 144 | dl=parms->dl; |
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| 145 | //mit=parms->mit; |
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| 146 | wcet=parms->wcet; |
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| 147 | } |
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| 148 | soft_task_def_system(model); |
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| 149 | //hard_task_def_mit(model,mit); |
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| 150 | //hard_task_def_drel(model,dl); |
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| 151 | //hard_task_def_wcet(model,wcet); |
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| 152 | soft_task_def_met(model,wcet); |
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| 153 | soft_task_def_wcet(model,wcet); |
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| 154 | soft_task_def_period(model,dl); |
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| 155 | soft_task_def_system(model); |
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| 156 | soft_task_def_nokill(model); |
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| 157 | |||
| 158 | soft_task_def_arg(model,(void*)ideif); |
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| 159 | soft_task_def_aperiodic(model); |
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| 160 | /* forse un NO_PREEMPT e' meglio */ |
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| 161 | |||
| 162 | sprintf(name,"ide%i-server",ideif); |
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| 163 | ide[ideif].server=task_create(name,ide_server,&model,NULL); |
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| 164 | |||
| 165 | if (ide[ideif].server==NIL) { |
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| 166 | if (ide_showinfo_flag) |
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| 167 | printk(IDELOG "ide glue: can't create task"); |
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| 168 | return -1; |
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| 169 | } |
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| 170 | |||
| 171 | /* activate */ |
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| 172 | task_activate(ide[ideif].server); |
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| 173 | |||
| 174 | /* associate an IRQ handler */ |
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| 1007 | mauro | 175 | handler_set(ide[ideif].irq,NULL,FALSE,ide[ideif].server, NULL); |
| 176 | |||
| 2 | pj | 177 | return 0; |
| 178 | } |
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| 179 | |||
| 180 | |||
| 181 | /*++++++++++++++++++++++++++++++++++++++ |
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| 182 | |||
| 183 | This function unactivate??? an interface: release the irq and |
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| 184 | kill the server task. |
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| 185 | |||
| 186 | int ideif |
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| 187 | interface to release |
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| 188 | ++++++++++++++++++++++++++++++++++++++*/ |
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| 189 | |||
| 190 | void __inline__ ide_glue_unactivate_interface(int ideif) |
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| 191 | { |
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| 192 | handler_remove(ide[ideif].irq); |
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| 193 | task_kill(ide[ideif].server); |
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| 194 | } |
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| 195 |