src/pld/pld.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 /***************************************************************************
   4  *   Copyright (C) 2006 by Dominic Rath                                    *
   5  *   Dominic.Rath@gmx.de                                                   *
   6  ***************************************************************************/
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include "config.h"
  10 #endif
  11
  12 #include "pld.h"
  13 #include <sys/stat.h>
  14 #include <helper/log.h>
  15 #include <helper/replacements.h>
  16 #include <helper/time_support.h>
  17
  18
  19 /* pld drivers
  20  */
  21 extern struct pld_driver efinix_pld;
  22 extern struct pld_driver lattice_pld;
  23 extern struct pld_driver virtex2_pld;
  24
  25 static struct pld_driver *pld_drivers[] = {
  26         &efinix_pld,
  27         &lattice_pld,
  28         &virtex2_pld,
  29         NULL,
  30 };
  31
  32 static struct pld_device *pld_devices;
  33
  34 struct pld_device *get_pld_device_by_num(int num)
  35 {
  36         struct pld_device *p;
  37         int i = 0;
  38
  39         for (p = pld_devices; p; p = p->next) {
  40                 if (i++ == num)
  41                         return p;
  42         }
  43
  44         return NULL;
  45 }
  46
  47 /* pld device <driver> [driver_options ...]
  48  */
  49 COMMAND_HANDLER(handle_pld_device_command)
  50 {
  51         int i;
  52         int found = 0;
  53
  54         if (CMD_ARGC < 1)
  55                 return ERROR_COMMAND_SYNTAX_ERROR;
  56
  57         for (i = 0; pld_drivers[i]; i++) {
  58                 if (strcmp(CMD_ARGV[0], pld_drivers[i]->name) == 0) {
  59                         struct pld_device *p, *c;
  60
  61                         /* register pld specific commands */
  62                         int retval;
  63                         if (pld_drivers[i]->commands) {
  64                                 retval = register_commands(CMD_CTX, NULL, pld_drivers[i]->commands);
  65                                 if (retval != ERROR_OK) {
  66                                         LOG_ERROR("couldn't register '%s' commands", CMD_ARGV[0]);
  67                                         return ERROR_FAIL;
  68                                 }
  69                         }
  70
  71                         c = malloc(sizeof(struct pld_device));
  72                         c->driver = pld_drivers[i];
  73                         c->next = NULL;
  74
  75                         retval = CALL_COMMAND_HANDLER(
  76                                         pld_drivers[i]->pld_device_command, c);
  77                         if (retval != ERROR_OK) {
  78                                 LOG_ERROR("'%s' driver rejected pld device",
  79                                         CMD_ARGV[0]);
  80                                 free(c);
  81                                 return ERROR_OK;
  82                         }
  83
  84                         /* put pld device in linked list */
  85                         if (pld_devices) {
  86                                 /* find last pld device */
  87                                 for (p = pld_devices; p && p->next; p = p->next)
  88                                         ;
  89                                 if (p)
  90                                         p->next = c;
  91                         } else
  92                                 pld_devices = c;
  93
  94                         found = 1;
  95                 }
  96         }
  97
  98         /* no matching pld driver found */
  99         if (!found) {
 100                 LOG_ERROR("pld driver '%s' not found", CMD_ARGV[0]);
 101                 exit(-1);
 102         }
 103
 104         return ERROR_OK;
 105 }
 106
 107 COMMAND_HANDLER(handle_pld_devices_command)
 108 {
 109         struct pld_device *p;
 110         int i = 0;
 111
 112         if (!pld_devices) {
 113                 command_print(CMD, "no pld devices configured");
 114                 return ERROR_OK;
 115         }
 116
 117         for (p = pld_devices; p; p = p->next)
 118                 command_print(CMD, "#%i: %s", i++, p->driver->name);
 119
 120         return ERROR_OK;
 121 }
 122
 123 COMMAND_HANDLER(handle_pld_load_command)
 124 {
 125         int retval;
 126         struct timeval start, end, duration;
 127         struct pld_device *p;
 128
 129         gettimeofday(&start, NULL);
 130
 131         if (CMD_ARGC < 2)
 132                 return ERROR_COMMAND_SYNTAX_ERROR;
 133
 134         unsigned dev_id;
 135         COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], dev_id);
 136         p = get_pld_device_by_num(dev_id);
 137         if (!p) {
 138                 command_print(CMD, "pld device '#%s' is out of bounds", CMD_ARGV[0]);
 139                 return ERROR_OK;
 140         }
 141
 142         struct stat input_stat;
 143         if (stat(CMD_ARGV[1], &input_stat) == -1) {
 144                 LOG_ERROR("couldn't stat() %s: %s", CMD_ARGV[1], strerror(errno));
 145                 return ERROR_PLD_FILE_LOAD_FAILED;
 146         }
 147
 148         if (S_ISDIR(input_stat.st_mode)) {
 149                 LOG_ERROR("%s is a directory", CMD_ARGV[1]);
 150                 return ERROR_PLD_FILE_LOAD_FAILED;
 151         }
 152
 153         if (input_stat.st_size == 0) {
 154                 LOG_ERROR("Empty file %s", CMD_ARGV[1]);
 155                 return ERROR_PLD_FILE_LOAD_FAILED;
 156         }
 157
 158         retval = p->driver->load(p, CMD_ARGV[1]);
 159         if (retval != ERROR_OK) {
 160                 command_print(CMD, "failed loading file %s to pld device %u",
 161                         CMD_ARGV[1], dev_id);
 162                 switch (retval) {
 163                 }
 164                 return retval;
 165         } else {
 166                 gettimeofday(&end, NULL);
 167                 timeval_subtract(&duration, &end, &start);
 168
 169                 command_print(CMD, "loaded file %s to pld device %u in %jis %jius",
 170                         CMD_ARGV[1], dev_id,
 171                         (intmax_t)duration.tv_sec, (intmax_t)duration.tv_usec);
 172         }
 173
 174         return ERROR_OK;
 175 }
 176
 177 static const struct command_registration pld_exec_command_handlers[] = {
 178         {
 179                 .name = "devices",
 180                 .handler = handle_pld_devices_command,
 181                 .mode = COMMAND_EXEC,
 182                 .help = "list configured pld devices",
 183                 .usage = "",
 184         },
 185         {
 186                 .name = "load",
 187                 .handler = handle_pld_load_command,
 188                 .mode = COMMAND_EXEC,
 189                 .help = "load configuration file into PLD",
 190                 .usage = "pld_num filename",
 191         },
 192         COMMAND_REGISTRATION_DONE
 193 };
 194
 195 static int pld_init(struct command_context *cmd_ctx)
 196 {
 197         if (!pld_devices)
 198                 return ERROR_OK;
 199
 200         return register_commands(cmd_ctx, "pld", pld_exec_command_handlers);
 201 }
 202
 203 COMMAND_HANDLER(handle_pld_init_command)
 204 {
 205         if (CMD_ARGC != 0)
 206                 return ERROR_COMMAND_SYNTAX_ERROR;
 207
 208         static bool pld_initialized;
 209         if (pld_initialized) {
 210                 LOG_INFO("'pld init' has already been called");
 211                 return ERROR_OK;
 212         }
 213         pld_initialized = true;
 214
 215         LOG_DEBUG("Initializing PLDs...");
 216         return pld_init(CMD_CTX);
 217 }
 218
 219 static const struct command_registration pld_config_command_handlers[] = {
 220         {
 221                 .name = "device",
 222                 .mode = COMMAND_CONFIG,
 223                 .handler = handle_pld_device_command,
 224                 .help = "configure a PLD device",
 225                 .usage = "driver_name [driver_args ... ]",
 226         },
 227         {
 228                 .name = "init",
 229                 .mode = COMMAND_CONFIG,
 230                 .handler = handle_pld_init_command,
 231                 .help = "initialize PLD devices",
 232                 .usage = ""
 233         },
 234         COMMAND_REGISTRATION_DONE
 235 };
 236 static const struct command_registration pld_command_handler[] = {
 237         {
 238                 .name = "pld",
 239                 .mode = COMMAND_ANY,
 240                 .help = "programmable logic device commands",
 241                 .usage = "",
 242                 .chain = pld_config_command_handlers,
 243         },
 244         COMMAND_REGISTRATION_DONE
 245 };
 246 int pld_register_commands(struct command_context *cmd_ctx)
 247 {
 248         return register_commands(cmd_ctx, NULL, pld_command_handler);
 249 }