src/pld/pld.c

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  19  ***************************************************************************/
  20
  21 #ifdef HAVE_CONFIG_H
  22 #include "config.h"
  23 #endif
  24
  25 #include "pld.h"
  26 #include <helper/log.h>
  27 #include <helper/time_support.h>
  28
  29
  30 /* pld drivers
  31  */
  32 extern struct pld_driver virtex2_pld;
  33
  34 static struct pld_driver *pld_drivers[] = {
  35         &virtex2_pld,
  36         NULL,
  37 };
  38
  39 static struct pld_device *pld_devices;
  40
  41 struct pld_device *get_pld_device_by_num(int num)
  42 {
  43         struct pld_device *p;
  44         int i = 0;
  45
  46         for (p = pld_devices; p; p = p->next) {
  47                 if (i++ == num)
  48                         return p;
  49         }
  50
  51         return NULL;
  52 }
  53
  54 /* pld device <driver> [driver_options ...]
  55  */
  56 COMMAND_HANDLER(handle_pld_device_command)
  57 {
  58         int i;
  59         int found = 0;
  60
  61         if (CMD_ARGC < 1)
  62                 return ERROR_COMMAND_SYNTAX_ERROR;
  63
  64         for (i = 0; pld_drivers[i]; i++) {
  65                 if (strcmp(CMD_ARGV[0], pld_drivers[i]->name) == 0) {
  66                         struct pld_device *p, *c;
  67
  68                         /* register pld specific commands */
  69                         int retval;
  70                         if (pld_drivers[i]->commands) {
  71                                 retval = register_commands(CMD_CTX, NULL,
  72                                                 pld_drivers[i]->commands);
  73                                 if (ERROR_OK != retval) {
  74                                         LOG_ERROR("couldn't register '%s' commands", CMD_ARGV[0]);
  75                                         return ERROR_FAIL;
  76                                 }
  77                         }
  78
  79                         c = malloc(sizeof(struct pld_device));
  80                         c->driver = pld_drivers[i];
  81                         c->next = NULL;
  82
  83                         retval = CALL_COMMAND_HANDLER(
  84                                         pld_drivers[i]->pld_device_command, c);
  85                         if (ERROR_OK != retval) {
  86                                 LOG_ERROR("'%s' driver rejected pld device",
  87                                         CMD_ARGV[0]);
  88                                 free(c);
  89                                 return ERROR_OK;
  90                         }
  91
  92                         /* put pld device in linked list */
  93                         if (pld_devices) {
  94                                 /* find last pld device */
  95                                 for (p = pld_devices; p && p->next; p = p->next)
  96                                         ;
  97                                 if (p)
  98                                         p->next = c;
  99                         } else
 100                                 pld_devices = c;
 101
 102                         found = 1;
 103                 }
 104         }
 105
 106         /* no matching pld driver found */
 107         if (!found) {
 108                 LOG_ERROR("pld driver '%s' not found", CMD_ARGV[0]);
 109                 exit(-1);
 110         }
 111
 112         return ERROR_OK;
 113 }
 114
 115 COMMAND_HANDLER(handle_pld_devices_command)
 116 {
 117         struct pld_device *p;
 118         int i = 0;
 119
 120         if (!pld_devices) {
 121                 command_print(CMD_CTX, "no pld devices configured");
 122                 return ERROR_OK;
 123         }
 124
 125         for (p = pld_devices; p; p = p->next)
 126                 command_print(CMD_CTX, "#%i: %s", i++, p->driver->name);
 127
 128         return ERROR_OK;
 129 }
 130
 131 COMMAND_HANDLER(handle_pld_load_command)
 132 {
 133         int retval;
 134         struct timeval start, end, duration;
 135         struct pld_device *p;
 136
 137         gettimeofday(&start, NULL);
 138
 139         if (CMD_ARGC < 2)
 140                 return ERROR_COMMAND_SYNTAX_ERROR;
 141
 142         unsigned dev_id;
 143         COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], dev_id);
 144         p = get_pld_device_by_num(dev_id);
 145         if (!p) {
 146                 command_print(CMD_CTX, "pld device '#%s' is out of bounds", CMD_ARGV[0]);
 147                 return ERROR_OK;
 148         }
 149
 150         retval = p->driver->load(p, CMD_ARGV[1]);
 151         if (retval != ERROR_OK) {
 152                 command_print(CMD_CTX, "failed loading file %s to pld device %u",
 153                         CMD_ARGV[1], dev_id);
 154                 switch (retval) {
 155                 }
 156                 return retval;
 157         } else {
 158                 gettimeofday(&end, NULL);
 159                 timeval_subtract(&duration, &end, &start);
 160
 161                 command_print(CMD_CTX, "loaded file %s to pld device %u in %jis %jius",
 162                         CMD_ARGV[1], dev_id,
 163                         (intmax_t)duration.tv_sec, (intmax_t)duration.tv_usec);
 164         }
 165
 166         return ERROR_OK;
 167 }
 168
 169 static const struct command_registration pld_exec_command_handlers[] = {
 170         {
 171                 .name = "devices",
 172                 .handler = handle_pld_devices_command,
 173                 .mode = COMMAND_EXEC,
 174                 .help = "list configured pld devices",
 175         },
 176         {
 177                 .name = "load",
 178                 .handler = handle_pld_load_command,
 179                 .mode = COMMAND_EXEC,
 180                 .help = "load configuration file into PLD",
 181                 .usage = "pld_num filename",
 182         },
 183         COMMAND_REGISTRATION_DONE
 184 };
 185
 186 static int pld_init(struct command_context *cmd_ctx)
 187 {
 188         if (!pld_devices)
 189                 return ERROR_OK;
 190
 191         struct command *parent = command_find_in_context(cmd_ctx, "pld");
 192         return register_commands(cmd_ctx, parent, pld_exec_command_handlers);
 193 }
 194
 195 COMMAND_HANDLER(handle_pld_init_command)
 196 {
 197         if (CMD_ARGC != 0)
 198                 return ERROR_COMMAND_SYNTAX_ERROR;
 199
 200         static bool pld_initialized;
 201         if (pld_initialized) {
 202                 LOG_INFO("'pld init' has already been called");
 203                 return ERROR_OK;
 204         }
 205         pld_initialized = true;
 206
 207         LOG_DEBUG("Initializing PLDs...");
 208         return pld_init(CMD_CTX);
 209 }
 210
 211 static const struct command_registration pld_config_command_handlers[] = {
 212         {
 213                 .name = "device",
 214                 .mode = COMMAND_CONFIG,
 215                 .handler = handle_pld_device_command,
 216                 .help = "configure a PLD device",
 217                 .usage = "driver_name [driver_args ... ]",
 218         },
 219         {
 220                 .name = "init",
 221                 .mode = COMMAND_CONFIG,
 222                 .handler = handle_pld_init_command,
 223                 .help = "initialize PLD devices",
 224                 .usage = ""
 225         },
 226         COMMAND_REGISTRATION_DONE
 227 };
 228 static const struct command_registration pld_command_handler[] = {
 229         {
 230                 .name = "pld",
 231                 .mode = COMMAND_ANY,
 232                 .help = "programmable logic device commands",
 233                 .usage = "",
 234                 .chain = pld_config_command_handlers,
 235         },
 236         COMMAND_REGISTRATION_DONE
 237 };
 238 int pld_register_commands(struct command_context *cmd_ctx)
 239 {
 240         return register_commands(cmd_ctx, NULL, pld_command_handler);
 241 }