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 intel_pld;
  23 extern struct pld_driver lattice_pld;
  24 extern struct pld_driver virtex2_pld;
  25
  26 static struct pld_driver *pld_drivers[] = {
  27         &efinix_pld,
  28         &intel_pld,
  29         &lattice_pld,
  30         &virtex2_pld,
  31         NULL,
  32 };
  33
  34 static struct pld_device *pld_devices;
  35
  36 struct pld_device *get_pld_device_by_num(int num)
  37 {
  38         struct pld_device *p;
  39         int i = 0;
  40
  41         for (p = pld_devices; p; p = p->next) {
  42                 if (i++ == num)
  43                         return p;
  44         }
  45
  46         return NULL;
  47 }
  48
  49 /* pld device <driver> [driver_options ...]
  50  */
  51 COMMAND_HANDLER(handle_pld_device_command)
  52 {
  53         int i;
  54         int found = 0;
  55
  56         if (CMD_ARGC < 1)
  57                 return ERROR_COMMAND_SYNTAX_ERROR;
  58
  59         for (i = 0; pld_drivers[i]; i++) {
  60                 if (strcmp(CMD_ARGV[0], pld_drivers[i]->name) == 0) {
  61                         struct pld_device *p, *c;
  62
  63                         /* register pld specific commands */
  64                         int retval;
  65                         if (pld_drivers[i]->commands) {
  66                                 retval = register_commands(CMD_CTX, NULL, pld_drivers[i]->commands);
  67                                 if (retval != ERROR_OK) {
  68                                         LOG_ERROR("couldn't register '%s' commands", CMD_ARGV[0]);
  69                                         return ERROR_FAIL;
  70                                 }
  71                         }
  72
  73                         c = malloc(sizeof(struct pld_device));
  74                         c->driver = pld_drivers[i];
  75                         c->next = NULL;
  76
  77                         retval = CALL_COMMAND_HANDLER(
  78                                         pld_drivers[i]->pld_device_command, c);
  79                         if (retval != ERROR_OK) {
  80                                 LOG_ERROR("'%s' driver rejected pld device",
  81                                         CMD_ARGV[0]);
  82                                 free(c);
  83                                 return ERROR_OK;
  84                         }
  85
  86                         /* put pld device in linked list */
  87                         if (pld_devices) {
  88                                 /* find last pld device */
  89                                 for (p = pld_devices; p && p->next; p = p->next)
  90                                         ;
  91                                 if (p)
  92                                         p->next = c;
  93                         } else
  94                                 pld_devices = c;
  95
  96                         found = 1;
  97                 }
  98         }
  99
 100         /* no matching pld driver found */
 101         if (!found) {
 102                 LOG_ERROR("pld driver '%s' not found", CMD_ARGV[0]);
 103                 exit(-1);
 104         }
 105
 106         return ERROR_OK;
 107 }
 108
 109 COMMAND_HANDLER(handle_pld_devices_command)
 110 {
 111         struct pld_device *p;
 112         int i = 0;
 113
 114         if (!pld_devices) {
 115                 command_print(CMD, "no pld devices configured");
 116                 return ERROR_OK;
 117         }
 118
 119         for (p = pld_devices; p; p = p->next)
 120                 command_print(CMD, "#%i: %s", i++, p->driver->name);
 121
 122         return ERROR_OK;
 123 }
 124
 125 COMMAND_HANDLER(handle_pld_load_command)
 126 {
 127         int retval;
 128         struct timeval start, end, duration;
 129         struct pld_device *p;
 130
 131         gettimeofday(&start, NULL);
 132
 133         if (CMD_ARGC < 2)
 134                 return ERROR_COMMAND_SYNTAX_ERROR;
 135
 136         unsigned dev_id;
 137         COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], dev_id);
 138         p = get_pld_device_by_num(dev_id);
 139         if (!p) {
 140                 command_print(CMD, "pld device '#%s' is out of bounds", CMD_ARGV[0]);
 141                 return ERROR_OK;
 142         }
 143
 144         struct stat input_stat;
 145         if (stat(CMD_ARGV[1], &input_stat) == -1) {
 146                 LOG_ERROR("couldn't stat() %s: %s", CMD_ARGV[1], strerror(errno));
 147                 return ERROR_PLD_FILE_LOAD_FAILED;
 148         }
 149
 150         if (S_ISDIR(input_stat.st_mode)) {
 151                 LOG_ERROR("%s is a directory", CMD_ARGV[1]);
 152                 return ERROR_PLD_FILE_LOAD_FAILED;
 153         }
 154
 155         if (input_stat.st_size == 0) {
 156                 LOG_ERROR("Empty file %s", CMD_ARGV[1]);
 157                 return ERROR_PLD_FILE_LOAD_FAILED;
 158         }
 159
 160         retval = p->driver->load(p, CMD_ARGV[1]);
 161         if (retval != ERROR_OK) {
 162                 command_print(CMD, "failed loading file %s to pld device %u",
 163                         CMD_ARGV[1], dev_id);
 164                 switch (retval) {
 165                 }
 166                 return retval;
 167         } else {
 168                 gettimeofday(&end, NULL);
 169                 timeval_subtract(&duration, &end, &start);
 170
 171                 command_print(CMD, "loaded file %s to pld device %u in %jis %jius",
 172                         CMD_ARGV[1], dev_id,
 173                         (intmax_t)duration.tv_sec, (intmax_t)duration.tv_usec);
 174         }
 175
 176         return ERROR_OK;
 177 }
 178
 179 static const struct command_registration pld_exec_command_handlers[] = {
 180         {
 181                 .name = "devices",
 182                 .handler = handle_pld_devices_command,
 183                 .mode = COMMAND_EXEC,
 184                 .help = "list configured pld devices",
 185                 .usage = "",
 186         },
 187         {
 188                 .name = "load",
 189                 .handler = handle_pld_load_command,
 190                 .mode = COMMAND_EXEC,
 191                 .help = "load configuration file into PLD",
 192                 .usage = "pld_num filename",
 193         },
 194         COMMAND_REGISTRATION_DONE
 195 };
 196
 197 static int pld_init(struct command_context *cmd_ctx)
 198 {
 199         if (!pld_devices)
 200                 return ERROR_OK;
 201
 202         return register_commands(cmd_ctx, "pld", pld_exec_command_handlers);
 203 }
 204
 205 COMMAND_HANDLER(handle_pld_init_command)
 206 {
 207         if (CMD_ARGC != 0)
 208                 return ERROR_COMMAND_SYNTAX_ERROR;
 209
 210         static bool pld_initialized;
 211         if (pld_initialized) {
 212                 LOG_INFO("'pld init' has already been called");
 213                 return ERROR_OK;
 214         }
 215         pld_initialized = true;
 216
 217         LOG_DEBUG("Initializing PLDs...");
 218         return pld_init(CMD_CTX);
 219 }
 220
 221 static const struct command_registration pld_config_command_handlers[] = {
 222         {
 223                 .name = "device",
 224                 .mode = COMMAND_CONFIG,
 225                 .handler = handle_pld_device_command,
 226                 .help = "configure a PLD device",
 227                 .usage = "driver_name [driver_args ... ]",
 228         },
 229         {
 230                 .name = "init",
 231                 .mode = COMMAND_CONFIG,
 232                 .handler = handle_pld_init_command,
 233                 .help = "initialize PLD devices",
 234                 .usage = ""
 235         },
 236         COMMAND_REGISTRATION_DONE
 237 };
 238 static const struct command_registration pld_command_handler[] = {
 239         {
 240                 .name = "pld",
 241                 .mode = COMMAND_ANY,
 242                 .help = "programmable logic device commands",
 243                 .usage = "",
 244                 .chain = pld_config_command_handlers,
 245         },
 246         COMMAND_REGISTRATION_DONE
 247 };
 248 int pld_register_commands(struct command_context *cmd_ctx)
 249 {
 250         return register_commands(cmd_ctx, NULL, pld_command_handler);
 251 }