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   1 /***************************************************************************
   2  *   Copyright (C) 2004, 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  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #if IS_CYGWIN == 1
  25 #include "windows.h"
  26 #undef ERROR
  27 #endif
  28
  29 #include "replacements.h"
  30
  31 /* project specific includes */
  32 #include "log.h"
  33 #include "types.h"
  34 #include "jtag.h"
  35 #include "configuration.h"
  36 #include "time_support.h"
  37
  38 /* system includes */
  39 #include <string.h>
  40 #include <stdlib.h>
  41 #include <unistd.h>
  42
  43 /* FT2232 access library includes */
  44 #if BUILD_FT2232_FTD2XX == 1
  45 #include <ftd2xx.h>
  46 #elif BUILD_FT2232_LIBFTDI == 1
  47 #include <ftdi.h>
  48 #endif
  49
  50 #include <sys/time.h>
  51 #include <time.h>
  52
  53 /* enable this to debug io latency
  54  */
  55 #if 0
  56 #define _DEBUG_USB_IO_
  57 #endif
  58
  59 /* enable this to debug communication
  60  */
  61 #if 0
  62 #define _DEBUG_USB_COMMS_
  63 #endif
  64
  65 int ft2232_execute_queue(void);
  66
  67 int ft2232_speed(int speed);
  68 int ft2232_register_commands(struct command_context_s *cmd_ctx);
  69 int ft2232_init(void);
  70 int ft2232_quit(void);
  71
  72 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  73 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  74 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  75 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  76
  77 char *ft2232_device_desc = NULL;
  78 char *ft2232_serial = NULL;
  79 char *ft2232_layout = NULL;
  80
  81 #define MAX_USB_IDS     8
  82 /* vid = pid = 0 marks the end of the list */
  83 static u16 ft2232_vid[MAX_USB_IDS+1] = { 0x0403, 0 };
  84 static u16 ft2232_pid[MAX_USB_IDS+1] = { 0x6010, 0 };
  85
  86 typedef struct ft2232_layout_s
  87 {
  88         char* name;
  89         int(*init)(void);
  90         void(*reset)(int trst, int srst);
  91         void(*blink)(void);
  92 } ft2232_layout_t;
  93
  94 /* init procedures for supported layouts */
  95 int usbjtag_init(void);
  96 int jtagkey_init(void);
  97 int olimex_jtag_init(void);
  98 int m5960_init(void);
  99 int turtle_init(void);
 100
 101 /* reset procedures for supported layouts */
 102 void usbjtag_reset(int trst, int srst);
 103 void jtagkey_reset(int trst, int srst);
 104 void olimex_jtag_reset(int trst, int srst);
 105 void m5960_reset(int trst, int srst);
 106 void turtle_reset(int trst, int srst);
 107
 108 /* blink procedures for layouts that support a blinking led */
 109 void olimex_jtag_blink(void);
 110 void turtle_jtag_blink(void);
 111
 112 ft2232_layout_t ft2232_layouts[] =
 113 {
 114         {"usbjtag", usbjtag_init, usbjtag_reset, NULL},
 115         {"jtagkey", jtagkey_init, jtagkey_reset, NULL},
 116         {"jtagkey_prototype_v1", jtagkey_init, jtagkey_reset, NULL},
 117         {"oocdlink", jtagkey_init, jtagkey_reset, NULL},
 118         {"signalyzer", usbjtag_init, usbjtag_reset, NULL},
 119         {"evb_lm3s811", usbjtag_init, usbjtag_reset, NULL},
 120         {"olimex-jtag", olimex_jtag_init, olimex_jtag_reset, olimex_jtag_blink},
 121         {"m5960", m5960_init, m5960_reset, NULL},
 122         {"turtelizer2", turtle_init, turtle_reset, turtle_jtag_blink},
 123         {NULL, NULL, NULL},
 124 };
 125
 126 static u8 nTRST, nTRSTnOE, nSRST, nSRSTnOE;
 127
 128 static ft2232_layout_t *layout;
 129 static u8 low_output = 0x0;
 130 static u8 low_direction = 0x0;
 131 static u8 high_output = 0x0;
 132 static u8 high_direction = 0x0;
 133
 134 #if BUILD_FT2232_FTD2XX == 1
 135 static FT_HANDLE ftdih = NULL;
 136 #elif BUILD_FT2232_LIBFTDI == 1
 137 static struct ftdi_context ftdic;
 138 #endif
 139
 140 static u8 *ft2232_buffer = NULL;
 141 static int ft2232_buffer_size = 0;
 142 static int ft2232_read_pointer = 0;
 143 static int ft2232_expect_read = 0;
 144 #define FT2232_BUFFER_SIZE      131072
 145 #define BUFFER_ADD ft2232_buffer[ft2232_buffer_size++]
 146 #define BUFFER_READ ft2232_buffer[ft2232_read_pointer++]
 147
 148 jtag_interface_t ft2232_interface =
 149 {
 150
 151         .name = "ft2232",
 152
 153         .execute_queue = ft2232_execute_queue,
 154
 155         .support_pathmove = 1,
 156
 157         .speed = ft2232_speed,
 158         .register_commands = ft2232_register_commands,
 159         .init = ft2232_init,
 160         .quit = ft2232_quit,
 161 };
 162
 163 int ft2232_write(u8 *buf, int size, u32* bytes_written)
 164 {
 165 #if BUILD_FT2232_FTD2XX == 1
 166         FT_STATUS status;
 167         DWORD dw_bytes_written;
 168         if ((status = FT_Write(ftdih, buf, size, &dw_bytes_written)) != FT_OK)
 169         {
 170                 *bytes_written = dw_bytes_written;
 171                 ERROR("FT_Write returned: %lu", status);
 172                 return ERROR_JTAG_DEVICE_ERROR;
 173         }
 174         else
 175         {
 176                 *bytes_written = dw_bytes_written;
 177                 return ERROR_OK;
 178         }
 179 #elif BUILD_FT2232_LIBFTDI == 1
 180         int retval;
 181         if ((retval = ftdi_write_data(&ftdic, buf, size)) < 0)
 182         {
 183                 *bytes_written = 0;
 184                 ERROR("ftdi_write_data: %s", ftdi_get_error_string(&ftdic));
 185                 return ERROR_JTAG_DEVICE_ERROR;
 186         }
 187         else
 188         {
 189                 *bytes_written = retval;
 190                 return ERROR_OK;
 191         }
 192 #endif
 193 }
 194
 195 int ft2232_read(u8* buf, int size, u32* bytes_read)
 196 {
 197 #if BUILD_FT2232_FTD2XX == 1
 198         DWORD dw_bytes_read;
 199         FT_STATUS status;
 200         int timeout = 5;
 201         *bytes_read = 0;
 202
 203         while ((*bytes_read < size) && timeout--)
 204         {
 205                 if ((status = FT_Read(ftdih, buf, size, &dw_bytes_read)) != FT_OK)
 206                 {
 207                         *bytes_read = 0;
 208                         ERROR("FT_Read returned: %lu", status);
 209                         return ERROR_JTAG_DEVICE_ERROR;
 210                 }
 211                 *bytes_read += dw_bytes_read;
 212         }
 213 #elif BUILD_FT2232_LIBFTDI == 1
 214         int retval;
 215         int timeout = 100;
 216         *bytes_read = 0;
 217
 218         while ((*bytes_read < size) && timeout--)
 219         {
 220                 if ((retval = ftdi_read_data(&ftdic, buf + *bytes_read, size - *bytes_read)) < 0)
 221                 {
 222                         *bytes_read = 0;
 223                         ERROR("ftdi_read_data: %s", ftdi_get_error_string(&ftdic));
 224                         return ERROR_JTAG_DEVICE_ERROR;
 225                 }
 226                 *bytes_read += retval;
 227         }
 228 #endif
 229
 230         if (*bytes_read < size)
 231         {
 232                 ERROR("couldn't read the requested number of bytes from FT2232 device (%i < %i)", *bytes_read, size);
 233                 return ERROR_JTAG_DEVICE_ERROR;
 234         }
 235
 236         return ERROR_OK;
 237 }
 238
 239 int ft2232_speed(int speed)
 240 {
 241         u8 buf[3];
 242         int retval;
 243         u32 bytes_written;
 244
 245         buf[0] = 0x86; /* command "set divisor" */
 246         buf[1] = speed & 0xff; /* valueL (0=6MHz, 1=3MHz, 2=1.5MHz, ...*/
 247         buf[2] = (speed >> 8) & 0xff; /* valueH */
 248
 249         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
 250         if (((retval = ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
 251         {
 252                 ERROR("couldn't set FT2232 TCK speed");
 253                 return retval;
 254         }
 255
 256         return ERROR_OK;
 257 }
 258
 259 int ft2232_register_commands(struct command_context_s *cmd_ctx)
 260 {
 261         register_command(cmd_ctx, NULL, "ft2232_device_desc", ft2232_handle_device_desc_command,
 262                 COMMAND_CONFIG, NULL);
 263         register_command(cmd_ctx, NULL, "ft2232_serial", ft2232_handle_serial_command,
 264                 COMMAND_CONFIG, NULL);
 265         register_command(cmd_ctx, NULL, "ft2232_layout", ft2232_handle_layout_command,
 266                 COMMAND_CONFIG, NULL);
 267         register_command(cmd_ctx, NULL, "ft2232_vid_pid", ft2232_handle_vid_pid_command,
 268                                          COMMAND_CONFIG, NULL);
 269         return ERROR_OK;
 270 }
 271
 272 void ft2232_end_state(state)
 273 {
 274         if (tap_move_map[state] != -1)
 275                 end_state = state;
 276         else
 277         {
 278                 ERROR("BUG: %i is not a valid end state", state);
 279                 exit(-1);
 280         }
 281 }
 282
 283 void ft2232_read_scan(enum scan_type type, u8* buffer, int scan_size)
 284 {
 285         int num_bytes = ((scan_size + 7) / 8);
 286         int bits_left = scan_size;
 287         int cur_byte = 0;
 288
 289         while(num_bytes-- > 1)
 290         {
 291                 buffer[cur_byte] = BUFFER_READ;
 292                 cur_byte++;
 293                 bits_left -= 8;
 294         }
 295
 296         buffer[cur_byte] = 0x0;
 297
 298         if (bits_left > 1)
 299         {
 300                 buffer[cur_byte] = BUFFER_READ >> 1;
 301         }
 302
 303         buffer[cur_byte] = (buffer[cur_byte] | ((BUFFER_READ & 0x02) << 6)) >> (8 - bits_left);
 304
 305 }
 306
 307 void ft2232_debug_dump_buffer(void)
 308 {
 309         int i;
 310         char line[256];
 311         char *line_p = line;
 312
 313         for (i = 0; i < ft2232_buffer_size; i++)
 314         {
 315                 line_p += snprintf(line_p, 256 - (line_p - line), "%2.2x ", ft2232_buffer[i]);
 316                 if (i % 16 == 15)
 317                 {
 318                         DEBUG("%s", line);
 319                         line_p = line;
 320                 }
 321         }
 322
 323         if (line_p != line)
 324                 DEBUG("%s", line);
 325 }
 326
 327 int ft2232_send_and_recv(jtag_command_t *first, jtag_command_t *last)
 328 {
 329         jtag_command_t *cmd;
 330         u8 *buffer;
 331         int scan_size;
 332         enum scan_type type;
 333         int retval;
 334         u32 bytes_written;
 335         u32 bytes_read;
 336
 337 #ifdef _DEBUG_USB_IO_
 338         struct timeval start, inter, inter2, end;
 339         struct timeval d_inter, d_inter2, d_end;
 340 #endif
 341
 342 #ifdef _DEBUG_USB_COMMS_
 343         DEBUG("write buffer (size %i):", ft2232_buffer_size);
 344         ft2232_debug_dump_buffer();
 345 #endif
 346
 347 #ifdef _DEBUG_USB_IO_
 348         gettimeofday(&start, NULL);
 349 #endif
 350
 351         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 352         {
 353                 ERROR("couldn't write MPSSE commands to FT2232");
 354                 exit(-1);
 355         }
 356
 357 #ifdef _DEBUG_USB_IO_
 358         gettimeofday(&inter, NULL);
 359 #endif
 360
 361         if (ft2232_expect_read)
 362         {
 363                 int timeout = 100;
 364                 ft2232_buffer_size = 0;
 365
 366 #ifdef _DEBUG_USB_IO_
 367                 gettimeofday(&inter2, NULL);
 368 #endif
 369
 370                 if ((retval = ft2232_read(ft2232_buffer, ft2232_expect_read, &bytes_read)) != ERROR_OK)
 371                 {
 372                         ERROR("couldn't read from FT2232");
 373                         exit(-1);
 374                 }
 375
 376 #ifdef _DEBUG_USB_IO_
 377                 gettimeofday(&end, NULL);
 378
 379                 timeval_subtract(&d_inter, &inter, &start);
 380                 timeval_subtract(&d_inter2, &inter2, &start);
 381                 timeval_subtract(&d_end, &end, &start);
 382
 383                 INFO("inter: %i.%i, inter2: %i.%i end: %i.%i", d_inter.tv_sec, d_inter.tv_usec, d_inter2.tv_sec, d_inter2.tv_usec, d_end.tv_sec, d_end.tv_usec);
 384 #endif
 385
 386
 387                 ft2232_buffer_size = bytes_read;
 388
 389                 if (ft2232_expect_read != ft2232_buffer_size)
 390                 {
 391                         ERROR("ft2232_expect_read (%i) != ft2232_buffer_size (%i) (%i retries)", ft2232_expect_read, ft2232_buffer_size, 100 - timeout);
 392                         ft2232_debug_dump_buffer();
 393
 394                         exit(-1);
 395                 }
 396
 397 #ifdef _DEBUG_USB_COMMS_
 398                 DEBUG("read buffer (%i retries): %i bytes", 100 - timeout, ft2232_buffer_size);
 399                 ft2232_debug_dump_buffer();
 400 #endif
 401         }
 402
 403         ft2232_expect_read = 0;
 404         ft2232_read_pointer = 0;
 405
 406         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 407          * that wasn't handled by a caller-provided error handler
 408          */
 409         retval = ERROR_OK;
 410
 411         cmd = first;
 412         while (cmd != last)
 413         {
 414                 switch (cmd->type)
 415                 {
 416                         case JTAG_SCAN:
 417                                 type = jtag_scan_type(cmd->cmd.scan);
 418                                 if (type != SCAN_OUT)
 419                                 {
 420                                         scan_size = jtag_scan_size(cmd->cmd.scan);
 421                                         buffer = calloc(CEIL(scan_size, 8), 1);
 422                                         ft2232_read_scan(type, buffer, scan_size);
 423                                         if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 424                                                 retval = ERROR_JTAG_QUEUE_FAILED;
 425                                         free(buffer);
 426                                 }
 427                                 break;
 428                         default:
 429                                 break;
 430                 }
 431                 cmd = cmd->next;
 432         }
 433
 434         ft2232_buffer_size = 0;
 435
 436         return retval;
 437 }
 438
 439 void ft2232_add_pathmove(pathmove_command_t *cmd)
 440 {
 441         int num_states = cmd->num_states;
 442         u8 tms_byte;
 443         int state_count;
 444
 445         state_count = 0;
 446         while (num_states)
 447         {
 448                 tms_byte = 0x0;
 449                 int bit_count = 0;
 450
 451                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 452                 BUFFER_ADD = 0x4b;
 453                 /* number of states remaining */
 454                 BUFFER_ADD = (num_states % 7) - 1;
 455
 456                 while (num_states % 7)
 457                 {
 458                         if (tap_transitions[cur_state].low == cmd->path[state_count])
 459                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x0);
 460                         else if (tap_transitions[cur_state].high == cmd->path[state_count])
 461                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x1);
 462                         else
 463                         {
 464                                 ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
 465                                 exit(-1);
 466                         }
 467
 468                         cur_state = cmd->path[state_count];
 469                         state_count++;
 470                         num_states--;
 471                 }
 472
 473                 BUFFER_ADD = tms_byte;
 474         }
 475
 476         end_state = cur_state;
 477 }
 478
 479 void ft2232_add_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 480 {
 481         int num_bytes = (scan_size + 7) / 8;
 482         int bits_left = scan_size;
 483         int cur_byte = 0;
 484         int last_bit;
 485
 486         if (!((!ir_scan && (cur_state == TAP_SD)) || (ir_scan && (cur_state == TAP_SI))))
 487         {
 488                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 489                 BUFFER_ADD = 0x4b;
 490                 /* scan 7 bit */
 491                 BUFFER_ADD = 0x6;
 492                 /* TMS data bits */
 493                 if (ir_scan)
 494                 {
 495                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SI);
 496                         cur_state = TAP_SI;
 497                 }
 498                 else
 499                 {
 500                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 501                         cur_state = TAP_SD;
 502                 }
 503                 //DEBUG("added TMS scan (no read)");
 504         }
 505
 506         /* add command for complete bytes */
 507         while (num_bytes > 1)
 508         {
 509                 int thisrun_bytes;
 510                 if (type == SCAN_IO)
 511                 {
 512                         /* Clock Data Bytes In and Out LSB First */
 513                         BUFFER_ADD = 0x39;
 514                         //DEBUG("added TDI bytes (io %i)", num_bytes);
 515                 }
 516                 else if (type == SCAN_OUT)
 517                 {
 518                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 519                         BUFFER_ADD = 0x19;
 520                         //DEBUG("added TDI bytes (o)");
 521                 }
 522                 else if (type == SCAN_IN)
 523                 {
 524                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 525                         BUFFER_ADD = 0x28;
 526                         //DEBUG("added TDI bytes (i %i)", num_bytes);
 527                 }
 528                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 529                 num_bytes -= thisrun_bytes;
 530                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 531                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 532                 if (type != SCAN_IN)
 533                 {
 534                         /* add complete bytes */
 535                         while(thisrun_bytes-- > 0)
 536                         {
 537                                 BUFFER_ADD = buffer[cur_byte];
 538                                 cur_byte++;
 539                                 bits_left -= 8;
 540                         }
 541                 }
 542                 else /* (type == SCAN_IN) */
 543                 {
 544                         bits_left -= 8 * (thisrun_bytes);
 545                 }
 546         }
 547
 548         /* the most signifcant bit is scanned during TAP movement */
 549         if (type != SCAN_IN)
 550                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 551         else
 552                 last_bit = 0;
 553
 554         /* process remaining bits but the last one */
 555         if (bits_left > 1)
 556         {
 557                 if (type == SCAN_IO)
 558                 {
 559                         /* Clock Data Bits In and Out LSB First */
 560                         BUFFER_ADD = 0x3b;
 561                         //DEBUG("added TDI bits (io) %i", bits_left - 1);
 562                 }
 563                 else if (type == SCAN_OUT)
 564                 {
 565                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 566                         BUFFER_ADD = 0x1b;
 567                         //DEBUG("added TDI bits (o)");
 568                 }
 569                 else if (type == SCAN_IN)
 570                 {
 571                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 572                         BUFFER_ADD = 0x2a;
 573                         //DEBUG("added TDI bits (i %i)", bits_left - 1);
 574                 }
 575                 BUFFER_ADD = bits_left - 2;
 576                 if (type != SCAN_IN)
 577                         BUFFER_ADD = buffer[cur_byte];
 578         }
 579
 580         if ((ir_scan && (end_state == TAP_SI)) ||
 581                 (!ir_scan && (end_state == TAP_SD)))
 582         {
 583                 if (type == SCAN_IO)
 584                 {
 585                         /* Clock Data Bits In and Out LSB First */
 586                         BUFFER_ADD = 0x3b;
 587                         //DEBUG("added TDI bits (io) %i", bits_left - 1);
 588                 }
 589                 else if (type == SCAN_OUT)
 590                 {
 591                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 592                         BUFFER_ADD = 0x1b;
 593                         //DEBUG("added TDI bits (o)");
 594                 }
 595                 else if (type == SCAN_IN)
 596                 {
 597                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 598                         BUFFER_ADD = 0x2a;
 599                         //DEBUG("added TDI bits (i %i)", bits_left - 1);
 600                 }
 601                 BUFFER_ADD = 0x0;
 602                 BUFFER_ADD = last_bit;
 603         }
 604         else
 605         {
 606                 /* move from Shift-IR/DR to end state */
 607                 if (type != SCAN_OUT)
 608                 {
 609                         /* Clock Data to TMS/CS Pin with Read */
 610                         BUFFER_ADD = 0x6b;
 611                         //DEBUG("added TMS scan (read)");
 612                 }
 613                 else
 614                 {
 615                         /* Clock Data to TMS/CS Pin (no Read) */
 616                         BUFFER_ADD = 0x4b;
 617                         //DEBUG("added TMS scan (no read)");
 618                 }
 619                 BUFFER_ADD = 0x6;
 620                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 621                 cur_state = end_state;
 622         }
 623 }
 624
 625 int ft2232_large_scan(scan_command_t *cmd, enum scan_type type, u8 *buffer, int scan_size)
 626 {
 627         int num_bytes = (scan_size + 7) / 8;
 628         int bits_left = scan_size;
 629         int cur_byte = 0;
 630         int last_bit;
 631         u8 *receive_buffer = malloc(CEIL(scan_size, 8));
 632         u8 *receive_pointer = receive_buffer;
 633         u32 bytes_written;
 634         u32 bytes_read;
 635         int retval;
 636         int thisrun_read = 0;
 637
 638         if (cmd->ir_scan)
 639         {
 640                 ERROR("BUG: large IR scans are not supported");
 641                 exit(-1);
 642         }
 643
 644         if (cur_state != TAP_SD)
 645         {
 646                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 647                 BUFFER_ADD = 0x4b;
 648                 /* scan 7 bit */
 649                 BUFFER_ADD = 0x6;
 650                 /* TMS data bits */
 651                 BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 652                 cur_state = TAP_SD;
 653         }
 654
 655         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 656         {
 657                 ERROR("couldn't write MPSSE commands to FT2232");
 658                 exit(-1);
 659         }
 660         DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 661         ft2232_buffer_size = 0;
 662
 663         /* add command for complete bytes */
 664         while (num_bytes > 1)
 665         {
 666                 int thisrun_bytes;
 667
 668                 if (type == SCAN_IO)
 669                 {
 670                         /* Clock Data Bytes In and Out LSB First */
 671                         BUFFER_ADD = 0x39;
 672                         //DEBUG("added TDI bytes (io %i)", num_bytes);
 673                 }
 674                 else if (type == SCAN_OUT)
 675                 {
 676                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 677                         BUFFER_ADD = 0x19;
 678                         //DEBUG("added TDI bytes (o)");
 679                 }
 680                 else if (type == SCAN_IN)
 681                 {
 682                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 683                         BUFFER_ADD = 0x28;
 684                         //DEBUG("added TDI bytes (i %i)", num_bytes);
 685                 }
 686                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 687                 thisrun_read = thisrun_bytes;
 688                 num_bytes -= thisrun_bytes;
 689                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 690                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 691                 if (type != SCAN_IN)
 692                 {
 693                         /* add complete bytes */
 694                         while(thisrun_bytes-- > 0)
 695                         {
 696                                 BUFFER_ADD = buffer[cur_byte];
 697                                 cur_byte++;
 698                                 bits_left -= 8;
 699                         }
 700                 }
 701                 else /* (type == SCAN_IN) */
 702                 {
 703                         bits_left -= 8 * (thisrun_bytes);
 704                 }
 705
 706                 if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 707                 {
 708                         ERROR("couldn't write MPSSE commands to FT2232");
 709                         exit(-1);
 710                 }
 711                 DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 712                 ft2232_buffer_size = 0;
 713
 714                 if (type != SCAN_OUT)
 715                 {
 716                         if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 717                         {
 718                                 ERROR("couldn't read from FT2232");
 719                                 exit(-1);
 720                         }
 721                         DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 722                         receive_pointer += bytes_read;
 723                 }
 724         }
 725
 726         thisrun_read = 0;
 727
 728         /* the most signifcant bit is scanned during TAP movement */
 729         if (type != SCAN_IN)
 730                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 731         else
 732                 last_bit = 0;
 733
 734         /* process remaining bits but the last one */
 735         if (bits_left > 1)
 736         {
 737                 if (type == SCAN_IO)
 738                 {
 739                         /* Clock Data Bits In and Out LSB First */
 740                         BUFFER_ADD = 0x3b;
 741                         //DEBUG("added TDI bits (io) %i", bits_left - 1);
 742                 }
 743                 else if (type == SCAN_OUT)
 744                 {
 745                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 746                         BUFFER_ADD = 0x1b;
 747                         //DEBUG("added TDI bits (o)");
 748                 }
 749                 else if (type == SCAN_IN)
 750                 {
 751                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 752                         BUFFER_ADD = 0x2a;
 753                         //DEBUG("added TDI bits (i %i)", bits_left - 1);
 754                 }
 755                 BUFFER_ADD = bits_left - 2;
 756                 if (type != SCAN_IN)
 757                         BUFFER_ADD = buffer[cur_byte];
 758
 759                 if (type != SCAN_OUT)
 760                         thisrun_read += 2;
 761         }
 762
 763         if (end_state == TAP_SD)
 764         {
 765                 if (type == SCAN_IO)
 766                 {
 767                         /* Clock Data Bits In and Out LSB First */
 768                         BUFFER_ADD = 0x3b;
 769                         //DEBUG("added TDI bits (io) %i", bits_left - 1);
 770                 }
 771                 else if (type == SCAN_OUT)
 772                 {
 773                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 774                         BUFFER_ADD = 0x1b;
 775                         //DEBUG("added TDI bits (o)");
 776                 }
 777                 else if (type == SCAN_IN)
 778                 {
 779                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 780                         BUFFER_ADD = 0x2a;
 781                         //DEBUG("added TDI bits (i %i)", bits_left - 1);
 782                 }
 783                 BUFFER_ADD = 0x0;
 784                 BUFFER_ADD = last_bit;
 785         }
 786         else
 787         {
 788                 /* move from Shift-IR/DR to end state */
 789                 if (type != SCAN_OUT)
 790                 {
 791                         /* Clock Data to TMS/CS Pin with Read */
 792                         BUFFER_ADD = 0x6b;
 793                         //DEBUG("added TMS scan (read)");
 794                 }
 795                 else
 796                 {
 797                         /* Clock Data to TMS/CS Pin (no Read) */
 798                         BUFFER_ADD = 0x4b;
 799                         //DEBUG("added TMS scan (no read)");
 800                 }
 801                 BUFFER_ADD = 0x6;
 802                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 803                 cur_state = end_state;
 804         }
 805
 806         if (type != SCAN_OUT)
 807                 thisrun_read += 1;
 808
 809         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 810         {
 811                 ERROR("couldn't write MPSSE commands to FT2232");
 812                 exit(-1);
 813         }
 814         DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 815         ft2232_buffer_size = 0;
 816
 817         if (type != SCAN_OUT)
 818         {
 819                 if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 820                 {
 821                         ERROR("couldn't read from FT2232");
 822                         exit(-1);
 823                 }
 824                 DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 825                 receive_pointer += bytes_read;
 826         }
 827
 828         return ERROR_OK;
 829 }
 830
 831 int ft2232_predict_scan_out(int scan_size, enum scan_type type)
 832 {
 833         int predicted_size = 3;
 834         int num_bytes = (scan_size - 1) / 8;
 835
 836         if (cur_state != TAP_SD)
 837                 predicted_size += 3;
 838
 839         if (type == SCAN_IN)    /* only from device to host */
 840         {
 841                 /* complete bytes */
 842                 predicted_size += (CEIL(num_bytes, 65536)) * 3;
 843                 /* remaining bits - 1 (up to 7) */
 844                 predicted_size += ((scan_size - 1) % 8) ? 2 : 0;
 845         }
 846         else                                    /* host to device, or bidirectional */
 847         {
 848                 /* complete bytes */
 849                 predicted_size += num_bytes + (CEIL(num_bytes, 65536)) * 3;
 850                 /* remaining bits -1 (up to 7) */
 851                 predicted_size += ((scan_size - 1) % 8) ? 3 : 0;
 852         }
 853
 854         return predicted_size;
 855 }
 856
 857 int ft2232_predict_scan_in(int scan_size, enum scan_type type)
 858 {
 859         int predicted_size = 0;
 860
 861         if (type != SCAN_OUT)
 862         {
 863                 /* complete bytes */
 864                 predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) - 1) : 0;
 865                 /* remaining bits - 1 */
 866                 predicted_size += ((scan_size - 1) % 8) ? 1 : 0;
 867                 /* last bit (from TMS scan) */
 868                 predicted_size += 1;
 869         }
 870
 871         //DEBUG("scan_size: %i, predicted_size: %i", scan_size, predicted_size);
 872
 873         return predicted_size;
 874 }
 875
 876 void usbjtag_reset(int trst, int srst)
 877 {
 878         if (trst == 1)
 879         {
 880                 cur_state = TAP_TLR;
 881                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 882                         low_direction |= nTRSTnOE;      /* switch to output pin (output is low) */
 883                 else
 884                         low_output &= ~nTRST;   /* switch output low */
 885         }
 886         else if (trst == 0)
 887         {
 888                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 889                         low_direction &= ~nTRSTnOE; /* switch to input pin (high-Z + internal and external pullup) */
 890                 else
 891                         low_output |= nTRST; /* switch output high */
 892         }
 893
 894         if (srst == 1)
 895         {
 896                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 897                         low_output &= ~nSRST;   /* switch output low */
 898                 else
 899                         low_direction |= nSRSTnOE;      /* switch to output pin (output is low) */
 900         }
 901         else if (srst == 0)
 902         {
 903                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 904                         low_output |= nSRST;    /* switch output high */
 905                 else
 906                         low_direction &= ~nSRSTnOE;     /* switch to input pin (high-Z) */
 907         }
 908
 909         /* command "set data bits low byte" */
 910         BUFFER_ADD = 0x80;
 911         BUFFER_ADD = low_output;
 912         BUFFER_ADD = low_direction;
 913
 914 }
 915
 916 void jtagkey_reset(int trst, int srst)
 917 {
 918         if (trst == 1)
 919         {
 920                 cur_state = TAP_TLR;
 921                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 922                         high_output &= ~nTRSTnOE;
 923                 else
 924                         high_output &= ~nTRST;
 925         }
 926         else if (trst == 0)
 927         {
 928                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 929                         high_output |= nTRSTnOE;
 930                 else
 931                         high_output |= nTRST;
 932         }
 933
 934         if (srst == 1)
 935         {
 936                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 937                         high_output &= ~nSRST;
 938                 else
 939                         high_output &= ~nSRSTnOE;
 940         }
 941         else if (srst == 0)
 942         {
 943                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 944                         high_output |= nSRST;
 945                 else
 946                         high_output |= nSRSTnOE;
 947         }
 948
 949         /* command "set data bits high byte" */
 950         BUFFER_ADD = 0x82;
 951         BUFFER_ADD = high_output;
 952         BUFFER_ADD = high_direction;
 953         DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 954 }
 955
 956 void olimex_jtag_reset(int trst, int srst)
 957 {
 958         if (trst == 1)
 959         {
 960                 cur_state = TAP_TLR;
 961                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 962                         high_output &= ~nTRSTnOE;
 963                 else
 964                         high_output &= ~nTRST;
 965         }
 966         else if (trst == 0)
 967         {
 968                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 969                         high_output |= nTRSTnOE;
 970                 else
 971                         high_output |= nTRST;
 972         }
 973
 974     if (srst == 1)
 975     {
 976         high_output |= nSRST;
 977     }
 978     else if (srst == 0)
 979     {
 980         high_output &= ~nSRST;
 981     }
 982
 983     /* command "set data bits high byte" */
 984     BUFFER_ADD = 0x82;
 985     BUFFER_ADD = high_output;
 986     BUFFER_ADD = high_direction;
 987     DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 988 }
 989
 990 void m5960_reset(int trst, int srst)
 991 {
 992         if (trst == 1)
 993         {
 994                 cur_state = TAP_TLR;
 995                 low_output &= ~nTRST;
 996         }
 997         else if (trst == 0)
 998         {
 999                 low_output |= nTRST;
1000         }
1001
1002     if (srst == 1)
1003     {
1004         low_output |= nSRST;
1005     }
1006     else if (srst == 0)
1007     {
1008         low_output &= ~nSRST;
1009     }
1010
1011     /* command "set data bits low byte" */
1012     BUFFER_ADD = 0x80;
1013     BUFFER_ADD = low_output;
1014     BUFFER_ADD = low_direction;
1015     DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1016 }
1017
1018 void turtle_reset(int trst, int srst)
1019 {
1020   trst = trst;
1021
1022         if (srst == 1)
1023         {
1024         low_output |= nSRST;
1025         }
1026         else if (srst == 0)
1027         {
1028                 low_output &= ~nSRST;
1029         }
1030
1031         /* command "set data bits high byte" */
1032         BUFFER_ADD = 0x80;
1033         BUFFER_ADD = low_output;
1034         BUFFER_ADD = low_direction;
1035         DEBUG("srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", srst, low_output, low_direction);
1036 }
1037
1038 int ft2232_execute_queue()
1039 {
1040         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
1041         jtag_command_t *first_unsent = cmd;     /* next command that has to be sent */
1042         u8 *buffer;
1043         int scan_size;  /* size of IR or DR scan */
1044         enum scan_type type;
1045         int i;
1046         int predicted_size = 0;
1047         int require_send = 0;
1048         int retval;
1049
1050         /* return ERROR_OK, unless ft2232_send_and_recv reports a failed check
1051          * that wasn't handled by a caller-provided error handler
1052          */
1053         retval = ERROR_OK;
1054
1055         ft2232_buffer_size = 0;
1056         ft2232_expect_read = 0;
1057
1058         /* blink, if the current layout has that feature */
1059         if (layout->blink)
1060                 layout->blink();
1061
1062         while (cmd)
1063         {
1064                 switch(cmd->type)
1065                 {
1066                         case JTAG_END_STATE:
1067                                 if (cmd->cmd.end_state->end_state != -1)
1068                                         ft2232_end_state(cmd->cmd.end_state->end_state);
1069                                 break;
1070                         case JTAG_RESET:
1071                                 /* only send the maximum buffer size that FT2232C can handle */
1072                                 predicted_size = 3;
1073                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1074                                 {
1075                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1076                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1077                                         require_send = 0;
1078                                         first_unsent = cmd;
1079                                 }
1080
1081                                 layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1082                                 require_send = 1;
1083
1084 #ifdef _DEBUG_JTAG_IO_
1085                                 DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1086 #endif
1087                                 break;
1088                         case JTAG_RUNTEST:
1089                                 /* only send the maximum buffer size that FT2232C can handle */
1090                                 predicted_size = 0;
1091                                 if (cur_state != TAP_RTI)
1092                                         predicted_size += 3;
1093                                 predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
1094                                 if ((cmd->cmd.runtest->end_state != -1) && (cmd->cmd.runtest->end_state != TAP_RTI))
1095                                         predicted_size += 3;
1096                                 if ((cmd->cmd.runtest->end_state == -1) && (end_state != TAP_RTI))
1097                                         predicted_size += 3;
1098                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1099                                 {
1100                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1101                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1102                                         require_send = 0;
1103                                         first_unsent = cmd;
1104                                 }
1105                                 if (cur_state != TAP_RTI)
1106                                 {
1107                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1108                                         BUFFER_ADD = 0x4b;
1109                                         /* scan 7 bit */
1110                                         BUFFER_ADD = 0x6;
1111                                         /* TMS data bits */
1112                                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_RTI);
1113                                         cur_state = TAP_RTI;
1114                                         require_send = 1;
1115                                 }
1116                                 i = cmd->cmd.runtest->num_cycles;
1117                                 while (i > 0)
1118                                 {
1119                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1120                                         BUFFER_ADD = 0x4b;
1121                                         /* scan 7 bit */
1122                                         BUFFER_ADD = (i > 7) ? 6 : (i - 1);
1123                                         /* TMS data bits */
1124                                         BUFFER_ADD = 0x0;
1125                                         cur_state = TAP_RTI;
1126                                         i -= (i > 7) ? 7 : i;
1127                                         //DEBUG("added TMS scan (no read)");
1128                                 }
1129                                 if (cmd->cmd.runtest->end_state != -1)
1130                                         ft2232_end_state(cmd->cmd.runtest->end_state);
1131                                 if (cur_state != end_state)
1132                                 {
1133                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1134                                         BUFFER_ADD = 0x4b;
1135                                         /* scan 7 bit */
1136                                         BUFFER_ADD = 0x6;
1137                                         /* TMS data bits */
1138                                         BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1139                                         cur_state = end_state;
1140                                         //DEBUG("added TMS scan (no read)");
1141                                 }
1142                                 require_send = 1;
1143 #ifdef _DEBUG_JTAG_IO_
1144                                 DEBUG("runtest: %i, end in %i", cmd->cmd.runtest->num_cycles, end_state);
1145 #endif
1146                                 break;
1147                         case JTAG_STATEMOVE:
1148                                 /* only send the maximum buffer size that FT2232C can handle */
1149                                 predicted_size = 3;
1150                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1151                                 {
1152                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1153                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1154                                         require_send = 0;
1155                                         first_unsent = cmd;
1156                                 }
1157                                 if (cmd->cmd.statemove->end_state != -1)
1158                                         ft2232_end_state(cmd->cmd.statemove->end_state);
1159                                 /* command "Clock Data to TMS/CS Pin (no Read)" */
1160                                 BUFFER_ADD = 0x4b;
1161                                 /* scan 7 bit */
1162                                 BUFFER_ADD = 0x6;
1163                                 /* TMS data bits */
1164                                 BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1165                                 //DEBUG("added TMS scan (no read)");
1166                                 cur_state = end_state;
1167                                 require_send = 1;
1168 #ifdef _DEBUG_JTAG_IO_
1169                                 DEBUG("statemove: %i", end_state);
1170 #endif
1171                                 break;
1172                         case JTAG_PATHMOVE:
1173                                 /* only send the maximum buffer size that FT2232C can handle */
1174                                 predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
1175                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1176                                 {
1177                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1178                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1179                                         require_send = 0;
1180                                         first_unsent = cmd;
1181                                 }
1182                                 ft2232_add_pathmove(cmd->cmd.pathmove);
1183                                 require_send = 1;
1184 #ifdef _DEBUG_JTAG_IO_
1185                                 DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
1186 #endif
1187                                 break;
1188                         case JTAG_SCAN:
1189                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
1190                                 type = jtag_scan_type(cmd->cmd.scan);
1191                                 predicted_size = ft2232_predict_scan_out(scan_size, type);
1192                                 if ((predicted_size + 1) > FT2232_BUFFER_SIZE)
1193                                 {
1194                                         DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
1195                                         /* unsent commands before this */
1196                                         if (first_unsent != cmd)
1197                                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1198                                                         retval = ERROR_JTAG_QUEUE_FAILED;
1199
1200                                         /* current command */
1201                                         if (cmd->cmd.scan->end_state != -1)
1202                                                 ft2232_end_state(cmd->cmd.scan->end_state);
1203                                         ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
1204                                         require_send = 0;
1205                                         first_unsent = cmd->next;
1206                                         if (buffer)
1207                                                 free(buffer);
1208                                         break;
1209                                 }
1210                                 else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1211                                 {
1212                                         DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %p, cmd: %p)", first_unsent, cmd);
1213                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1214                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1215                                         require_send = 0;
1216                                         first_unsent = cmd;
1217                                 }
1218                                 ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
1219                                 //DEBUG("new read size: %i", ft2232_expect_read);
1220                                 if (cmd->cmd.scan->end_state != -1)
1221                                         ft2232_end_state(cmd->cmd.scan->end_state);
1222                                 ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
1223                                 require_send = 1;
1224                                 if (buffer)
1225                                         free(buffer);
1226 #ifdef _DEBUG_JTAG_IO_
1227                                 DEBUG("%s scan, %i bit, end in %i", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size, end_state);
1228 #endif
1229                                 break;
1230                         case JTAG_SLEEP:
1231                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1232                                         retval = ERROR_JTAG_QUEUE_FAILED;
1233                                 first_unsent = cmd->next;
1234                                 jtag_sleep(cmd->cmd.sleep->us);
1235 #ifdef _DEBUG_JTAG_IO_
1236                                 DEBUG("sleep %i usec", cmd->cmd.sleep->us);
1237 #endif
1238                                 break;
1239                         default:
1240                                 ERROR("BUG: unknown JTAG command type encountered");
1241                                 exit(-1);
1242                 }
1243                 cmd = cmd->next;
1244         }
1245
1246         if (require_send > 0)
1247                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1248                         retval = ERROR_JTAG_QUEUE_FAILED;
1249
1250         return retval;
1251 }
1252
1253 #if BUILD_FT2232_FTD2XX == 1
1254 static int ft2232_init_ftd2xx(u16 vid, u16 pid, int more, int *try_more)
1255 {
1256         FT_STATUS status;
1257         DWORD openex_flags = 0;
1258         char *openex_string = NULL;
1259         u8 latency_timer;
1260
1261         DEBUG("'ft2232' interface using FTD2XX with '%s' layout (%4.4x:%4.4x)",
1262             ft2232_layout, vid, pid);
1263
1264 #if IS_WIN32 == 0
1265         /* Add non-standard Vid/Pid to the linux driver */
1266         if ((status = FT_SetVIDPID(vid, pid)) != FT_OK)
1267         {
1268                 WARNING("couldn't add %4.4x:%4.4x",
1269                     vid, pid);
1270         }
1271 #endif
1272
1273         if (ft2232_device_desc && ft2232_serial)
1274         {
1275                 WARNING("can't open by device description and serial number, giving precedence to serial");
1276                 ft2232_device_desc = NULL;
1277         }
1278
1279         if (ft2232_device_desc)
1280         {
1281                 openex_string = ft2232_device_desc;
1282                 openex_flags = FT_OPEN_BY_DESCRIPTION;
1283         }
1284         else if (ft2232_serial)
1285         {
1286                 openex_string = ft2232_serial;
1287                 openex_flags = FT_OPEN_BY_SERIAL_NUMBER;
1288         }
1289         else
1290         {
1291                 ERROR("neither device description nor serial number specified");
1292                 ERROR("please add \"ft2232_device_desc <string>\" or \"ft2232_serial <string>\" to your .cfg file");
1293
1294                 return ERROR_JTAG_INIT_FAILED;
1295         }
1296
1297         if ((status = FT_OpenEx(openex_string, openex_flags, &ftdih)) != FT_OK)
1298         {
1299                 DWORD num_devices;
1300
1301                 if (more) {
1302                         WARNING("unable to open ftdi device (trying more): %lu",
1303                             status);
1304                         *try_more = 1;
1305                         return ERROR_JTAG_INIT_FAILED;
1306                 }
1307                 ERROR("unable to open ftdi device: %lu", status);
1308                 status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
1309                 if (status == FT_OK)
1310                 {
1311                         char **desc_array = malloc(sizeof(char*) * (num_devices + 1));
1312                         int i;
1313
1314                         for (i = 0; i < num_devices; i++)
1315                                 desc_array[i] = malloc(64);
1316                         desc_array[num_devices] = NULL;
1317
1318                         status = FT_ListDevices(desc_array, &num_devices, FT_LIST_ALL | openex_flags);
1319
1320                         if (status == FT_OK)
1321                         {
1322                                 ERROR("ListDevices: %lu\n", num_devices);
1323                                 for (i = 0; i < num_devices; i++)
1324                                         ERROR("%i: %s", i, desc_array[i]);
1325                         }
1326
1327                         for (i = 0; i < num_devices; i++)
1328                                 free(desc_array[i]);
1329                         free(desc_array);
1330                 }
1331                 else
1332                 {
1333                         printf("ListDevices: NONE\n");
1334                 }
1335                 return ERROR_JTAG_INIT_FAILED;
1336         }
1337
1338         if ((status = FT_SetLatencyTimer(ftdih, 2)) != FT_OK)
1339         {
1340                 ERROR("unable to set latency timer: %lu", status);
1341                 return ERROR_JTAG_INIT_FAILED;
1342         }
1343
1344         if ((status = FT_GetLatencyTimer(ftdih, &latency_timer)) != FT_OK)
1345         {
1346                 ERROR("unable to get latency timer: %lu", status);
1347                 return ERROR_JTAG_INIT_FAILED;
1348         }
1349         else
1350         {
1351                 DEBUG("current latency timer: %i", latency_timer);
1352         }
1353
1354         if ((status = FT_SetTimeouts(ftdih, 5000, 5000)) != FT_OK)
1355         {
1356                 ERROR("unable to set timeouts: %lu", status);
1357                 return ERROR_JTAG_INIT_FAILED;
1358         }
1359
1360         if ((status = FT_SetBitMode(ftdih, 0x0b, 2)) != FT_OK)
1361         {
1362                 ERROR("unable to enable bit i/o mode: %lu", status);
1363                 return ERROR_JTAG_INIT_FAILED;
1364         }
1365
1366         return ERROR_OK;
1367 }
1368
1369 static int ft2232_purge_ftd2xx(void)
1370 {
1371         FT_STATUS status;
1372
1373         if ((status = FT_Purge(ftdih, FT_PURGE_RX | FT_PURGE_TX)) != FT_OK)
1374         {
1375                 ERROR("error purging ftd2xx device: %lu", status);
1376                 return ERROR_JTAG_INIT_FAILED;
1377         }
1378
1379         return ERROR_OK;
1380 }
1381 #endif /* BUILD_FT2232_FTD2XX == 1 */
1382
1383 #if BUILD_FT2232_LIBFTDI == 1
1384 static int ft2232_init_libftdi(u16 vid, u16 pid, int more, int *try_more)
1385 {
1386         u8 latency_timer;
1387
1388         DEBUG("'ft2232' interface using libftdi with '%s' layout (%4.4x:%4.4x)",
1389             ft2232_layout, vid, pid);
1390
1391         if (ftdi_init(&ftdic) < 0)
1392                 return ERROR_JTAG_INIT_FAILED;
1393
1394         /* context, vendor id, product id */
1395         if (ftdi_usb_open_desc(&ftdic, vid, pid, ft2232_device_desc,
1396             ft2232_serial) < 0) {
1397                 if (more)
1398                         WARNING("unable to open ftdi device (trying more): %s",
1399                              ftdic.error_str);
1400                 else
1401                         ERROR("unable to open ftdi device: %s", ftdic.error_str);
1402                 *try_more = 1;
1403                 return ERROR_JTAG_INIT_FAILED;
1404         }
1405
1406         if (ftdi_set_interface(&ftdic, INTERFACE_A) < 0)
1407         {
1408                 ERROR("unable to select FT2232 channel A: %s", ftdic.error_str);
1409                 return ERROR_JTAG_INIT_FAILED;
1410         }
1411
1412         if (ftdi_usb_reset(&ftdic) < 0)
1413         {
1414                 ERROR("unable to reset ftdi device");
1415                 return ERROR_JTAG_INIT_FAILED;
1416         }
1417
1418         if (ftdi_set_latency_timer(&ftdic, 2) < 0)
1419         {
1420                 ERROR("unable to set latency timer");
1421                 return ERROR_JTAG_INIT_FAILED;
1422         }
1423
1424         if (ftdi_get_latency_timer(&ftdic, &latency_timer) < 0)
1425         {
1426                 ERROR("unable to get latency timer");
1427                 return ERROR_JTAG_INIT_FAILED;
1428         }
1429         else
1430         {
1431                 DEBUG("current latency timer: %i", latency_timer);
1432         }
1433
1434         ftdi_set_bitmode(&ftdic, 0x0b, 2); /* ctx, JTAG I/O mask */
1435
1436         return ERROR_OK;
1437 }
1438
1439 static int ft2232_purge_libftdi(void)
1440 {
1441         if (ftdi_usb_purge_buffers(&ftdic) < 0)
1442         {
1443                 ERROR("ftdi_purge_buffers: %s", ftdic.error_str);
1444                 return ERROR_JTAG_INIT_FAILED;
1445         }
1446
1447         return ERROR_OK;
1448 }
1449 #endif /* BUILD_FT2232_LIBFTDI == 1 */
1450
1451 int ft2232_init(void)
1452 {
1453         u8 buf[1];
1454         int retval;
1455         u32 bytes_written;
1456         ft2232_layout_t *cur_layout = ft2232_layouts;
1457         int i;
1458
1459         if ((ft2232_layout == NULL) || (ft2232_layout[0] == 0))
1460         {
1461                 ft2232_layout = "usbjtag";
1462                 WARNING("No ft2232 layout specified, using default 'usbjtag'");
1463         }
1464
1465         while (cur_layout->name)
1466         {
1467                 if (strcmp(cur_layout->name, ft2232_layout) == 0)
1468                 {
1469                         layout = cur_layout;
1470                         break;
1471                 }
1472                 cur_layout++;
1473         }
1474
1475         if (!layout)
1476         {
1477                 ERROR("No matching layout found for %s", ft2232_layout);
1478                 return ERROR_JTAG_INIT_FAILED;
1479         }
1480
1481         for (i = 0; 1; i++) {
1482                 /*
1483                  * "more indicates that there are more IDs to try, so we should
1484                  * not print an error for an ID mismatch (but for anything
1485                  * else, we should).
1486                  *
1487                  * try_more indicates that the error code returned indicates an
1488                  * ID mismatch (and nothing else) and that we should proceeed
1489                  * with the next ID pair.
1490                  */
1491                 int more = ft2232_vid[i+1] || ft2232_pid[i+1];
1492                 int try_more = 0;
1493
1494 #if BUILD_FT2232_FTD2XX == 1
1495                 retval = ft2232_init_ftd2xx(ft2232_vid[i], ft2232_pid[i],
1496                     more, &try_more);
1497 #elif BUILD_FT2232_LIBFTDI == 1
1498                 retval = ft2232_init_libftdi(ft2232_vid[i], ft2232_pid[i],
1499                     more, &try_more);
1500 #endif
1501                 if (retval >= 0)
1502                         break;
1503                 if (!more || !try_more)
1504                         return retval;
1505         }
1506
1507         ft2232_buffer_size = 0;
1508         ft2232_buffer = malloc(FT2232_BUFFER_SIZE);
1509
1510         if (layout->init() != ERROR_OK)
1511                 return ERROR_JTAG_INIT_FAILED;
1512
1513         ft2232_speed(jtag_speed);
1514
1515         buf[0] = 0x85; /* Disconnect TDI/DO to TDO/DI for Loopback */
1516         if (((retval = ft2232_write(buf, 1, &bytes_written)) != ERROR_OK) || (bytes_written != 1))
1517         {
1518                 ERROR("couldn't write to FT2232 to disable loopback");
1519                 return ERROR_JTAG_INIT_FAILED;
1520         }
1521
1522 #if BUILD_FT2232_FTD2XX == 1
1523         return ft2232_purge_ftd2xx();
1524 #elif BUILD_FT2232_LIBFTDI == 1
1525         return ft2232_purge_libftdi();
1526 #endif
1527
1528         return ERROR_OK;
1529 }
1530
1531 int usbjtag_init(void)
1532 {
1533         u8 buf[3];
1534         u32 bytes_written;
1535
1536         low_output = 0x08;
1537         low_direction = 0x0b;
1538
1539         if (strcmp(ft2232_layout, "usbjtag") == 0)
1540         {
1541                 nTRST = 0x10;
1542                 nTRSTnOE = 0x10;
1543                 nSRST = 0x40;
1544                 nSRSTnOE = 0x40;
1545         }
1546         else if (strcmp(ft2232_layout, "signalyzer") == 0)
1547         {
1548                 nTRST = 0x10;
1549                 nTRSTnOE = 0x10;
1550                 nSRST = 0x20;
1551                 nSRSTnOE = 0x20;
1552         }
1553         else if (strcmp(ft2232_layout, "evb_lm3s811") == 0)
1554         {
1555                 nTRST = 0x0;
1556                 nTRSTnOE = 0x00;
1557                 nSRST = 0x20;
1558                 nSRSTnOE = 0x20;
1559                 low_output = 0x88;
1560                 low_direction = 0x8b;
1561         }
1562         else
1563         {
1564                 ERROR("BUG: usbjtag_init called for unknown layout '%s'", ft2232_layout);
1565                 return ERROR_JTAG_INIT_FAILED;
1566         }
1567
1568         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1569         {
1570                 low_direction &= ~nTRSTnOE; /* nTRST input */
1571                 low_output &= ~nTRST; /* nTRST = 0 */
1572         }
1573         else
1574         {
1575                 low_direction |= nTRSTnOE; /* nTRST output */
1576                 low_output |= nTRST; /* nTRST = 1 */
1577         }
1578
1579         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1580         {
1581                 low_direction |= nSRSTnOE; /* nSRST output */
1582                 low_output |= nSRST; /* nSRST = 1 */
1583         }
1584         else
1585         {
1586                 low_direction &= ~nSRSTnOE; /* nSRST input */
1587                 low_output &= ~nSRST; /* nSRST = 0 */
1588         }
1589
1590         /* initialize low byte for jtag */
1591         buf[0] = 0x80; /* command "set data bits low byte" */
1592         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, xRST high) */
1593         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in */
1594         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1595
1596         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1597         {
1598                 ERROR("couldn't initialize FT2232 with 'USBJTAG' layout");
1599                 return ERROR_JTAG_INIT_FAILED;
1600         }
1601
1602         return ERROR_OK;
1603 }
1604
1605 int jtagkey_init(void)
1606 {
1607         u8 buf[3];
1608         u32 bytes_written;
1609
1610         low_output = 0x08;
1611         low_direction = 0x1b;
1612
1613         /* initialize low byte for jtag */
1614         buf[0] = 0x80; /* command "set data bits low byte" */
1615         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1616         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1617         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1618
1619         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1620         {
1621                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1622                 return ERROR_JTAG_INIT_FAILED;
1623         }
1624
1625         if (strcmp(layout->name, "jtagkey") == 0)
1626         {
1627                 nTRST = 0x01;
1628                 nTRSTnOE = 0x4;
1629                 nSRST = 0x02;
1630                 nSRSTnOE = 0x08;
1631         }
1632         else if ((strcmp(layout->name, "jtagkey_prototype_v1") == 0) ||
1633                 (strcmp(layout->name, "oocdlink") == 0))
1634         {
1635                 nTRST = 0x02;
1636                 nTRSTnOE = 0x1;
1637                 nSRST = 0x08;
1638                 nSRSTnOE = 0x04;
1639         }
1640         else
1641         {
1642                 ERROR("BUG: jtagkey_init called for non jtagkey layout");
1643                 exit(-1);
1644         }
1645
1646         high_output = 0x0;
1647         high_direction = 0x0f;
1648
1649         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1650         {
1651                 high_output |= nTRSTnOE;
1652                 high_output &= ~nTRST;
1653         }
1654         else
1655         {
1656                 high_output &= ~nTRSTnOE;
1657                 high_output |= nTRST;
1658         }
1659
1660         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1661         {
1662                 high_output &= ~nSRSTnOE;
1663                 high_output |= nSRST;
1664         }
1665         else
1666         {
1667                 high_output |= nSRSTnOE;
1668                 high_output &= ~nSRST;
1669         }
1670
1671         /* initialize high port */
1672         buf[0] = 0x82; /* command "set data bits high byte" */
1673         buf[1] = high_output; /* value */
1674         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1675         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1676
1677         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1678         {
1679                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1680                 return ERROR_JTAG_INIT_FAILED;
1681         }
1682
1683         return ERROR_OK;
1684 }
1685
1686 int olimex_jtag_init(void)
1687 {
1688         u8 buf[3];
1689         u32 bytes_written;
1690
1691         low_output = 0x08;
1692         low_direction = 0x1b;
1693
1694         /* initialize low byte for jtag */
1695         buf[0] = 0x80; /* command "set data bits low byte" */
1696         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1697         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1698         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1699
1700         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1701         {
1702                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1703                 return ERROR_JTAG_INIT_FAILED;
1704         }
1705
1706         nTRST = 0x01;
1707         nTRSTnOE = 0x4;
1708         nSRST = 0x02;
1709         nSRSTnOE = 0x00; /* no output enable for nSRST */
1710
1711         high_output = 0x0;
1712         high_direction = 0x0f;
1713
1714         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1715         {
1716                 high_output |= nTRSTnOE;
1717                 high_output &= ~nTRST;
1718         }
1719         else
1720         {
1721                 high_output &= ~nTRSTnOE;
1722                 high_output |= nTRST;
1723         }
1724
1725         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1726         {
1727                 ERROR("can't set nSRST to push-pull on the Olimex ARM-USB-OCD");
1728         }
1729         else
1730         {
1731                 high_output &= ~nSRST;
1732         }
1733
1734         /* turn red LED on */
1735         high_output |= 0x08;
1736
1737         /* initialize high port */
1738         buf[0] = 0x82; /* command "set data bits high byte" */
1739         buf[1] = high_output; /* value */
1740         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1741         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1742
1743         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1744         {
1745                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1746                 return ERROR_JTAG_INIT_FAILED;
1747         }
1748
1749         return ERROR_OK;
1750 }
1751
1752 int m5960_init(void)
1753 {
1754         u8 buf[3];
1755         u32 bytes_written;
1756
1757         low_output = 0x18;
1758         low_direction = 0xfb;
1759
1760         /* initialize low byte for jtag */
1761         buf[0] = 0x80; /* command "set data bits low byte" */
1762         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1763         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE[12]=out, n[ST]srst=out */
1764         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1765
1766         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1767         {
1768                 ERROR("couldn't initialize FT2232 with 'm5960' layout");
1769                 return ERROR_JTAG_INIT_FAILED;
1770         }
1771
1772         nTRST = 0x10;
1773         nTRSTnOE = 0x0; /* not output enable for nTRST */
1774         nSRST = 0x20;
1775         nSRSTnOE = 0x00; /* no output enable for nSRST */
1776
1777         high_output = 0x00;
1778         high_direction = 0x0c;
1779
1780         /* turn red LED1 on, LED2 off */
1781         high_output |= 0x08;
1782
1783         /* initialize high port */
1784         buf[0] = 0x82; /* command "set data bits high byte" */
1785         buf[1] = high_output; /* value */
1786         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1787         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1788
1789         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1790         {
1791                 ERROR("couldn't initialize FT2232 with 'm5960' layout");
1792                 return ERROR_JTAG_INIT_FAILED;
1793         }
1794
1795         return ERROR_OK;
1796 }
1797
1798 int turtle_init(void)
1799 {
1800         u8 buf[3];
1801         u32 bytes_written;
1802
1803         low_output = 0x08;
1804         low_direction = 0x5b;
1805
1806         /* initialize low byte for jtag */
1807         buf[0] = 0x80; /* command "set data bits low byte" */
1808         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1809         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1810         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1811
1812         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1813         {
1814                 ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1815                 return ERROR_JTAG_INIT_FAILED;
1816         }
1817
1818   nSRST = 0x40;
1819
1820         high_output = 0x00;
1821         high_direction = 0x0C;
1822
1823         /* initialize high port */
1824         buf[0] = 0x82; /* command "set data bits high byte" */
1825         buf[1] = high_output;
1826         buf[2] = high_direction;
1827         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1828
1829         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1830         {
1831                 ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1832                 return ERROR_JTAG_INIT_FAILED;
1833         }
1834
1835         return ERROR_OK;
1836 }
1837
1838 void olimex_jtag_blink(void)
1839 {
1840         /* Olimex ARM-USB-OCD has a LED connected to ACBUS3
1841          * ACBUS3 is bit 3 of the GPIOH port
1842          */
1843         if (high_output & 0x08)
1844         {
1845                 /* set port pin high */
1846                 high_output &= 0x07;
1847         }
1848         else
1849         {
1850                 /* set port pin low */
1851                 high_output |= 0x08;
1852         }
1853
1854         BUFFER_ADD = 0x82;
1855         BUFFER_ADD = high_output;
1856         BUFFER_ADD = high_direction;
1857 }
1858
1859 void turtle_jtag_blink(void)
1860 {
1861         /*
1862    * Turtelizer2 has two LEDs connected to ACBUS2 and ACBUS3
1863          */
1864         if (high_output & 0x08)
1865         {
1866                 high_output = 0x04;
1867         }
1868         else
1869         {
1870                 high_output = 0x08;
1871         }
1872
1873         BUFFER_ADD = 0x82;
1874         BUFFER_ADD = high_output;
1875         BUFFER_ADD = high_direction;
1876 }
1877
1878
1879 int ft2232_quit(void)
1880 {
1881 #if BUILD_FT2232_FTD2XX == 1
1882         FT_STATUS status;
1883
1884         status = FT_Close(ftdih);
1885 #elif BUILD_FT2232_LIBFTDI == 1
1886         ftdi_disable_bitbang(&ftdic);
1887
1888         ftdi_usb_close(&ftdic);
1889
1890         ftdi_deinit(&ftdic);
1891 #endif
1892
1893         free(ft2232_buffer);
1894
1895         return ERROR_OK;
1896 }
1897
1898 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1899 {
1900         if (argc == 1)
1901         {
1902                 ft2232_device_desc = strdup(args[0]);
1903         }
1904         else
1905         {
1906                 ERROR("expected exactly one argument to ft2232_device_desc <description>");
1907         }
1908
1909         return ERROR_OK;
1910 }
1911
1912 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1913 {
1914         if (argc == 1)
1915         {
1916                 ft2232_serial = strdup(args[0]);
1917         }
1918         else
1919         {
1920                 ERROR("expected exactly one argument to ft2232_serial <serial-number>");
1921         }
1922
1923         return ERROR_OK;
1924 }
1925
1926 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1927 {
1928         if (argc == 0)
1929                 return ERROR_OK;
1930
1931         ft2232_layout = malloc(strlen(args[0]) + 1);
1932         strcpy(ft2232_layout, args[0]);
1933
1934         return ERROR_OK;
1935 }
1936
1937 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1938 {
1939         int i;
1940
1941         if (argc > MAX_USB_IDS*2) {
1942                 WARNING("ignoring extra IDs in ft2232_vid_pid "
1943                     "(maximum is %d pairs)", MAX_USB_IDS);
1944                 argc = MAX_USB_IDS*2;
1945         }
1946         if (argc < 2 || (argc & 1))
1947         {
1948                 WARNING("incomplete ft2232_vid_pid configuration directive");
1949                 if (argc < 2)
1950                         return ERROR_OK;
1951         }
1952
1953         for (i = 0; i+1 < argc; i += 2) {
1954                 ft2232_vid[i >> 1] = strtol(args[i], NULL, 0);
1955                 ft2232_pid[i >> 1] = strtol(args[i+1], NULL, 0);
1956         }
1957         /*
1958          * Explicitly terminate, in case there are multiples instances of
1959          * ft2232_vid_pid.
1960          */
1961         ft2232_vid[i >> 1] = ft2232_pid[i >> 1] = 0;
1962
1963         return ERROR_OK;
1964 }