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   1 /***************************************************************************
   2  *   Copyright (C) 2005 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, see <http://www.gnu.org/licenses/>. *
  17  ***************************************************************************/
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include "config.h"
  21 #endif
  22
  23 #include <jtag/adapter.h>
  24 #include <jtag/interface.h>
  25
  26 #if PARPORT_USE_PPDEV == 1
  27 #include <linux/parport.h>
  28 #include <linux/ppdev.h>
  29 #include <sys/ioctl.h>
  30 #else   /* not PARPORT_USE_PPDEV */
  31 #ifndef _WIN32
  32 #include <sys/io.h>
  33 #endif
  34 #endif
  35
  36 #if PARPORT_USE_GIVEIO == 1
  37 #if IS_CYGWIN == 1
  38 #include <windows.h>
  39 #endif
  40 #endif
  41
  42 /**
  43  * @file
  44  * Support the Amontec Chameleon POD with JTAG Accelerator support.
  45  * This is a parallel port JTAG adapter with a CPLD between the
  46  * parallel port and the JTAG connection.  VHDL code running in the
  47  * CPLD significantly accelerates JTAG operations compared to the
  48  * bitbanging "Wiggler" style of most parallel port adapters.
  49  */
  50
  51 /* configuration */
  52 static uint16_t amt_jtagaccel_port;
  53
  54 /* interface variables
  55  */
  56 static uint8_t aw_control_rst;
  57 static uint8_t aw_control_fsm = 0x10;
  58 static uint8_t aw_control_baudrate = 0x20;
  59
  60 static int rtck_enabled;
  61
  62 #if PARPORT_USE_PPDEV == 1
  63 static int device_handle;
  64
  65 static const int addr_mode = IEEE1284_MODE_EPP | IEEE1284_ADDR;
  66
  67 /* FIXME do something sane when these ioctl/read/write calls fail. */
  68
  69 #define AMT_AW(val) \
  70         do { \
  71                 int __retval; \
  72                 \
  73                 __retval = ioctl(device_handle, PPSETMODE, &addr_mode); \
  74                 assert(__retval >= 0); \
  75                 __retval = write(device_handle, &val, 1); \
  76                 assert(__retval >= 0); \
  77         } while (0)
  78 #define AMT_AR(val) \
  79         do { \
  80                 int __retval; \
  81                 \
  82                 __retval = ioctl(device_handle, PPSETMODE, &addr_mode); \
  83                 assert(__retval >= 0); \
  84                 __retval = read(device_handle, &val, 1); \
  85                 assert(__retval >= 0); \
  86         } while (0)
  87
  88 static const int data_mode = IEEE1284_MODE_EPP | IEEE1284_DATA;
  89
  90 #define AMT_DW(val) \
  91         do { \
  92                 int __retval; \
  93                 \
  94                 __retval = ioctl(device_handle, PPSETMODE, &data_mode); \
  95                 assert(__retval >= 0); \
  96                 __retval = write(device_handle, &val, 1); \
  97                 assert(__retval >= 0); \
  98         } while (0)
  99 #define AMT_DR(val) \
 100         do { \
 101                 int __retval; \
 102                 \
 103                 __retval = ioctl(device_handle, PPSETMODE, &data_mode); \
 104                 assert(__retval >= 0); \
 105                 __retval = read(device_handle, &val, 1); \
 106                 assert(__retval >= 0); \
 107         } while (0)
 108
 109 #else
 110
 111 #define AMT_AW(val) do { outb(val, amt_jtagaccel_port + 3); } while (0)
 112 #define AMT_AR(val) do { val = inb(amt_jtagaccel_port + 3); } while (0)
 113 #define AMT_DW(val) do { outb(val, amt_jtagaccel_port + 4); } while (0)
 114 #define AMT_DR(val) do { val = inb(amt_jtagaccel_port + 4); } while (0)
 115
 116 #endif  /* PARPORT_USE_PPDEV */
 117
 118 /* tap_move[i][j]: tap movement command to go from state i to state j
 119  * 0: Test-Logic-Reset
 120  * 1: Run-Test/Idle
 121  * 2: Shift-DR
 122  * 3: Pause-DR
 123  * 4: Shift-IR
 124  * 5: Pause-IR
 125  */
 126 static const uint8_t amt_jtagaccel_tap_move[6][6][2] = {
 127         /*         RESET         IDLE        DRSHIFT       DRPAUSE       IRSHIFT       IRPAUSE             */
 128         { {0x1f, 0x00}, {0x0f, 0x00}, {0x05, 0x00}, {0x0a, 0x00}, {0x06, 0x00}, {0x96, 0x00} }, /* RESET */
 129         { {0x1f, 0x00}, {0x00, 0x00}, {0x04, 0x00}, {0x05, 0x00}, {0x06, 0x00}, {0x0b, 0x00} }, /* IDLE */
 130         { {0x1f, 0x00}, {0x0d, 0x00}, {0x00, 0x00}, {0x01, 0x00}, {0x8f, 0x09}, {0x8f, 0x01} }, /* DRSHIFT  */
 131         { {0x1f, 0x00}, {0x0c, 0x00}, {0x08, 0x00}, {0x00, 0x00}, {0x8f, 0x09}, {0x8f, 0x01} }, /* DRPAUSE  */
 132         { {0x1f, 0x00}, {0x0d, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x00, 0x00}, {0x01, 0x00} }, /* IRSHIFT  */
 133         { {0x1f, 0x00}, {0x0c, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x08, 0x00}, {0x00, 0x00} }, /* IRPAUSE  */
 134 };
 135
 136 static void amt_jtagaccel_reset(int trst, int srst)
 137 {
 138         if (trst == 1)
 139                 aw_control_rst |= 0x4;
 140         else if (trst == 0)
 141                 aw_control_rst &= ~0x4;
 142
 143         if (srst == 1)
 144                 aw_control_rst |= 0x1;
 145         else if (srst == 0)
 146                 aw_control_rst &= ~0x1;
 147
 148         AMT_AW(aw_control_rst);
 149 }
 150
 151 static int amt_jtagaccel_speed(int speed)
 152 {
 153         aw_control_baudrate &= 0xf0;
 154         aw_control_baudrate |= speed & 0x0f;
 155         AMT_AW(aw_control_baudrate);
 156
 157         return ERROR_OK;
 158 }
 159
 160 static void amt_jtagaccel_end_state(tap_state_t state)
 161 {
 162         if (tap_is_state_stable(state))
 163                 tap_set_end_state(state);
 164         else {
 165                 LOG_ERROR("BUG: %i is not a valid end state", state);
 166                 exit(-1);
 167         }
 168 }
 169
 170 static void amt_wait_scan_busy(void)
 171 {
 172         int timeout = 4096;
 173         uint8_t ar_status;
 174
 175         AMT_AR(ar_status);
 176         while (((ar_status) & 0x80) && (timeout-- > 0))
 177                 AMT_AR(ar_status);
 178
 179         if (ar_status & 0x80) {
 180                 LOG_ERROR(
 181                         "amt_jtagaccel timed out while waiting for end of scan, rtck was %s, last AR_STATUS: 0x%2.2x",
 182                         (rtck_enabled) ? "enabled" : "disabled",
 183                         ar_status);
 184                 exit(-1);
 185         }
 186 }
 187
 188 static void amt_jtagaccel_state_move(void)
 189 {
 190         uint8_t aw_scan_tms_5;
 191         uint8_t tms_scan[2];
 192
 193         tap_state_t cur_state = tap_get_state();
 194         tap_state_t end_state = tap_get_end_state();
 195
 196         tms_scan[0] = amt_jtagaccel_tap_move[tap_move_ndx(cur_state)][tap_move_ndx(end_state)][0];
 197         tms_scan[1] = amt_jtagaccel_tap_move[tap_move_ndx(cur_state)][tap_move_ndx(end_state)][1];
 198
 199         aw_scan_tms_5 = 0x40 | (tms_scan[0] & 0x1f);
 200         AMT_AW(aw_scan_tms_5);
 201         int jtag_speed = 0;
 202         int retval = jtag_get_speed(&jtag_speed);
 203         assert(retval == ERROR_OK);
 204         if (jtag_speed > 3 || rtck_enabled)
 205                 amt_wait_scan_busy();
 206
 207         if (tms_scan[0] & 0x80) {
 208                 aw_scan_tms_5 = 0x40 | (tms_scan[1] & 0x1f);
 209                 AMT_AW(aw_scan_tms_5);
 210                 if (jtag_speed > 3 || rtck_enabled)
 211                         amt_wait_scan_busy();
 212         }
 213
 214         tap_set_state(end_state);
 215 }
 216
 217 static void amt_jtagaccel_runtest(int num_cycles)
 218 {
 219         int i = 0;
 220         uint8_t aw_scan_tms_5;
 221         uint8_t aw_scan_tms_1to4;
 222
 223         tap_state_t saved_end_state = tap_get_end_state();
 224
 225         /* only do a state_move when we're not already in IDLE */
 226         if (tap_get_state() != TAP_IDLE) {
 227                 amt_jtagaccel_end_state(TAP_IDLE);
 228                 amt_jtagaccel_state_move();
 229         }
 230
 231         while (num_cycles - i >= 5) {
 232                 aw_scan_tms_5 = 0x40;
 233                 AMT_AW(aw_scan_tms_5);
 234                 i += 5;
 235         }
 236
 237         if (num_cycles - i > 0) {
 238                 aw_scan_tms_1to4 = 0x80 | ((num_cycles - i - 1) & 0x3) << 4;
 239                 AMT_AW(aw_scan_tms_1to4);
 240         }
 241
 242         amt_jtagaccel_end_state(saved_end_state);
 243         if (tap_get_state() != tap_get_end_state())
 244                 amt_jtagaccel_state_move();
 245 }
 246
 247 static void amt_jtagaccel_scan(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size)
 248 {
 249         int bits_left = scan_size;
 250         int bit_count = 0;
 251         tap_state_t saved_end_state = tap_get_end_state();
 252         uint8_t aw_tdi_option;
 253         uint8_t dw_tdi_scan;
 254         uint8_t dr_tdo;
 255         uint8_t aw_tms_scan;
 256         uint8_t tms_scan[2];
 257         int jtag_speed_var;
 258         int retval = jtag_get_speed(&jtag_speed_var);
 259         assert(retval == ERROR_OK);
 260
 261         if (ir_scan)
 262                 amt_jtagaccel_end_state(TAP_IRSHIFT);
 263         else
 264                 amt_jtagaccel_end_state(TAP_DRSHIFT);
 265
 266         /* Only move if we're not already there */
 267         if (tap_get_state() != tap_get_end_state())
 268                 amt_jtagaccel_state_move();
 269
 270         amt_jtagaccel_end_state(saved_end_state);
 271
 272         /* handle unaligned bits at the beginning */
 273         if ((scan_size - 1) % 8) {
 274                 aw_tdi_option = 0x30 | (((scan_size - 1) % 8) - 1);
 275                 AMT_AW(aw_tdi_option);
 276
 277                 dw_tdi_scan = buf_get_u32(buffer, bit_count, (scan_size - 1) % 8) & 0xff;
 278                 AMT_DW(dw_tdi_scan);
 279                 if (jtag_speed_var > 3 || rtck_enabled)
 280                         amt_wait_scan_busy();
 281
 282                 if ((type == SCAN_IN) || (type == SCAN_IO)) {
 283                         AMT_DR(dr_tdo);
 284                         dr_tdo = dr_tdo >> (8 - ((scan_size - 1) % 8));
 285                         buf_set_u32(buffer, bit_count, (scan_size - 1) % 8, dr_tdo);
 286                 }
 287
 288                 bit_count += (scan_size - 1) % 8;
 289                 bits_left -= (scan_size - 1) % 8;
 290         }
 291
 292         while (bits_left - 1 >= 8) {
 293                 dw_tdi_scan = buf_get_u32(buffer, bit_count, 8) & 0xff;
 294                 AMT_DW(dw_tdi_scan);
 295                 if (jtag_speed_var > 3 || rtck_enabled)
 296                         amt_wait_scan_busy();
 297
 298                 if ((type == SCAN_IN) || (type == SCAN_IO)) {
 299                         AMT_DR(dr_tdo);
 300                         buf_set_u32(buffer, bit_count, 8, dr_tdo);
 301                 }
 302
 303                 bit_count += 8;
 304                 bits_left -= 8;
 305         }
 306
 307         tms_scan[0] =
 308                 amt_jtagaccel_tap_move[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())][0];
 309         tms_scan[1] =
 310                 amt_jtagaccel_tap_move[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())][1];
 311         aw_tms_scan = 0x40 | (tms_scan[0] & 0x1f) | (buf_get_u32(buffer, bit_count, 1) << 5);
 312         AMT_AW(aw_tms_scan);
 313         if (jtag_speed_var > 3 || rtck_enabled)
 314                 amt_wait_scan_busy();
 315
 316         if ((type == SCAN_IN) || (type == SCAN_IO)) {
 317                 AMT_DR(dr_tdo);
 318                 dr_tdo = dr_tdo >> 7;
 319                 buf_set_u32(buffer, bit_count, 1, dr_tdo);
 320         }
 321
 322         if (tms_scan[0] & 0x80) {
 323                 aw_tms_scan = 0x40 | (tms_scan[1] & 0x1f);
 324                 AMT_AW(aw_tms_scan);
 325                 if (jtag_speed_var > 3 || rtck_enabled)
 326                         amt_wait_scan_busy();
 327         }
 328         tap_set_state(tap_get_end_state());
 329 }
 330
 331 static int amt_jtagaccel_execute_queue(void)
 332 {
 333         struct jtag_command *cmd = jtag_command_queue;  /* currently processed command */
 334         int scan_size;
 335         enum scan_type type;
 336         uint8_t *buffer;
 337         int retval;
 338
 339         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 340          * that wasn't handled by a caller-provided error handler
 341          */
 342         retval = ERROR_OK;
 343
 344         while (cmd) {
 345                 switch (cmd->type) {
 346                         case JTAG_RESET:
 347                                 LOG_DEBUG_IO("reset trst: %i srst %i",
 348                                                 cmd->cmd.reset->trst,
 349                                                 cmd->cmd.reset->srst);
 350                                 if (cmd->cmd.reset->trst == 1)
 351                                         tap_set_state(TAP_RESET);
 352                                 amt_jtagaccel_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 353                                 break;
 354                         case JTAG_RUNTEST:
 355                                 LOG_DEBUG_IO("runtest %i cycles, end in %i",
 356                                                 cmd->cmd.runtest->num_cycles,
 357                                                 cmd->cmd.runtest->end_state);
 358                                 amt_jtagaccel_end_state(cmd->cmd.runtest->end_state);
 359                                 amt_jtagaccel_runtest(cmd->cmd.runtest->num_cycles);
 360                                 break;
 361                         case JTAG_TLR_RESET:
 362                                 LOG_DEBUG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
 363                                 amt_jtagaccel_end_state(cmd->cmd.statemove->end_state);
 364                                 amt_jtagaccel_state_move();
 365                                 break;
 366                         case JTAG_SCAN:
 367                                 LOG_DEBUG_IO("scan end in %i", cmd->cmd.scan->end_state);
 368                                 amt_jtagaccel_end_state(cmd->cmd.scan->end_state);
 369                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
 370                                 type = jtag_scan_type(cmd->cmd.scan);
 371                                 amt_jtagaccel_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
 372                                 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 373                                         retval = ERROR_JTAG_QUEUE_FAILED;
 374                                 free(buffer);
 375                                 break;
 376                         case JTAG_SLEEP:
 377                                 LOG_DEBUG_IO("sleep %" PRIu32, cmd->cmd.sleep->us);
 378                                 jtag_sleep(cmd->cmd.sleep->us);
 379                                 break;
 380                         default:
 381                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
 382                                 exit(-1);
 383                 }
 384                 cmd = cmd->next;
 385         }
 386
 387         return retval;
 388 }
 389
 390 #if PARPORT_USE_GIVEIO == 1
 391 int amt_jtagaccel_get_giveio_access(void)
 392 {
 393         HANDLE h;
 394         OSVERSIONINFO version;
 395
 396         version.dwOSVersionInfoSize = sizeof(version);
 397         if (!GetVersionEx(&version)) {
 398                 errno = EINVAL;
 399                 return -1;
 400         }
 401         if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
 402                 return 0;
 403
 404         h = CreateFile("\\\\.\\giveio",
 405                         GENERIC_READ,
 406                         0,
 407                         NULL,
 408                         OPEN_EXISTING,
 409                         FILE_ATTRIBUTE_NORMAL,
 410                         NULL);
 411         if (h == INVALID_HANDLE_VALUE) {
 412                 errno = ENODEV;
 413                 return -1;
 414         }
 415
 416         CloseHandle(h);
 417
 418         return 0;
 419 }
 420 #endif
 421
 422 static int amt_jtagaccel_init(void)
 423 {
 424 #if PARPORT_USE_PPDEV == 1
 425         char buffer[256];
 426         int i = 0;
 427         uint8_t control_port;
 428 #else
 429         uint8_t status_port;
 430 #endif
 431         uint8_t ar_status;
 432
 433 #if PARPORT_USE_PPDEV == 1
 434         if (device_handle > 0) {
 435                 LOG_ERROR("device is already opened");
 436                 return ERROR_JTAG_INIT_FAILED;
 437         }
 438
 439         snprintf(buffer, 256, "/dev/parport%d", amt_jtagaccel_port);
 440         device_handle = open(buffer, O_RDWR);
 441
 442         if (device_handle < 0) {
 443                 LOG_ERROR(
 444                         "cannot open device. check it exists and that user read and write rights are set");
 445                 return ERROR_JTAG_INIT_FAILED;
 446         }
 447
 448         i = ioctl(device_handle, PPCLAIM);
 449         if (i < 0) {
 450                 LOG_ERROR("cannot claim device");
 451                 return ERROR_JTAG_INIT_FAILED;
 452         }
 453
 454         i = IEEE1284_MODE_EPP;
 455         i = ioctl(device_handle, PPSETMODE, &i);
 456         if (i < 0) {
 457                 LOG_ERROR(" cannot set compatible mode to device");
 458                 return ERROR_JTAG_INIT_FAILED;
 459         }
 460
 461         control_port = 0x00;
 462         i = ioctl(device_handle, PPWCONTROL, &control_port);
 463
 464         control_port = 0x04;
 465         i = ioctl(device_handle, PPWCONTROL, &control_port);
 466
 467 #else
 468         if (amt_jtagaccel_port == 0) {
 469                 amt_jtagaccel_port = 0x378;
 470                 LOG_WARNING("No parport port specified, using default '0x378' (LPT1)");
 471         }
 472
 473 #if PARPORT_USE_GIVEIO == 1
 474         if (amt_jtagaccel_get_giveio_access() != 0) {
 475 #else   /* PARPORT_USE_GIVEIO */
 476         if (ioperm(amt_jtagaccel_port, 5, 1) != 0) {
 477 #endif  /* PARPORT_USE_GIVEIO */
 478                 LOG_ERROR("missing privileges for direct i/o");
 479                 return ERROR_JTAG_INIT_FAILED;
 480         }
 481
 482         /* prepare epp port
 483          * clear timeout */
 484         status_port = inb(amt_jtagaccel_port + 1);
 485         outb(status_port | 0x1, amt_jtagaccel_port + 1);
 486
 487         /* reset epp port */
 488         outb(0x00, amt_jtagaccel_port + 2);
 489         outb(0x04, amt_jtagaccel_port + 2);
 490 #endif
 491
 492         if (rtck_enabled) {
 493                 /* set RTCK enable bit */
 494                 aw_control_fsm |= 0x02;
 495         }
 496
 497         /* enable JTAG port */
 498         aw_control_fsm |= 0x04;
 499         AMT_AW(aw_control_fsm);
 500
 501         enum reset_types jtag_reset_config = jtag_get_reset_config();
 502         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 503                 aw_control_rst &= ~0x8;
 504         else
 505                 aw_control_rst |= 0x8;
 506
 507         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 508                 aw_control_rst &= ~0x2;
 509         else
 510                 aw_control_rst |= 0x2;
 511
 512         amt_jtagaccel_reset(0, 0);
 513
 514         /* read status register */
 515         AMT_AR(ar_status);
 516         LOG_DEBUG("AR_STATUS: 0x%2.2x", ar_status);
 517
 518         return ERROR_OK;
 519 }
 520
 521 static int amt_jtagaccel_quit(void)
 522 {
 523
 524         return ERROR_OK;
 525 }
 526
 527 COMMAND_HANDLER(amt_jtagaccel_handle_parport_port_command)
 528 {
 529         if (CMD_ARGC == 1) {
 530                 /* only if the port wasn't overwritten by cmdline */
 531                 if (amt_jtagaccel_port == 0) {
 532                         uint16_t port;
 533                         COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], port);
 534                         amt_jtagaccel_port = port;
 535                 } else {
 536                         LOG_ERROR("The parport port was already configured!");
 537                         return ERROR_FAIL;
 538                 }
 539         }
 540
 541         command_print(CMD, "parport port = %u", amt_jtagaccel_port);
 542
 543         return ERROR_OK;
 544 }
 545
 546 COMMAND_HANDLER(amt_jtagaccel_handle_rtck_command)
 547 {
 548         if (CMD_ARGC == 0) {
 549                 command_print(CMD,
 550                         "amt_jtagaccel RTCK feature %s",
 551                         (rtck_enabled) ? "enabled" : "disabled");
 552                 return ERROR_OK;
 553         } else {
 554                 if (strcmp(CMD_ARGV[0], "enabled") == 0)
 555                         rtck_enabled = 1;
 556                 else
 557                         rtck_enabled = 0;
 558         }
 559
 560         return ERROR_OK;
 561 }
 562
 563 static const struct command_registration amtjtagaccel_command_handlers[] = {
 564         {
 565                 .name = "parport_port",
 566                 .handler = &amt_jtagaccel_handle_parport_port_command,
 567                 .mode = COMMAND_CONFIG,
 568                 .help = "configure or display the parallel port to use",
 569                 .usage = "[port_num]",
 570         },
 571         {
 572                 /**
 573                  * @todo Remove this "rtck" command; just use the standard
 574                  * mechanism to enable/disable adaptive clocking.  First
 575                  * implement the standard mechanism and deprecate "rtck";
 576                  * after a year or so, it'll be safe to remove this.
 577                  */
 578                 .name = "rtck",
 579                 .handler = &amt_jtagaccel_handle_rtck_command,
 580                 .mode = COMMAND_CONFIG,
 581                 .help = "configure or display RTCK support",
 582                 .usage = "[enable|disable]",
 583         },
 584         COMMAND_REGISTRATION_DONE
 585 };
 586
 587 static struct jtag_interface amt_jtagaccel_interface = {
 588         .execute_queue = amt_jtagaccel_execute_queue,
 589 };
 590
 591 struct adapter_driver amt_jtagaccel_adapter_driver = {
 592         .name = "amt_jtagaccel",
 593         .transports = jtag_only,
 594         .commands = amtjtagaccel_command_handlers,
 595
 596         .init = amt_jtagaccel_init,
 597         .quit = amt_jtagaccel_quit,
 598         .speed = amt_jtagaccel_speed,
 599
 600         .jtag_ops = &amt_jtagaccel_interface,
 601 };