src/jtag/drivers/amt_jtagaccel.c

   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, 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 #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 = 0x00;
  57 static uint8_t aw_control_fsm = 0x10;
  58 static uint8_t aw_control_baudrate = 0x20;
  59
  60 static int rtck_enabled = 0;
  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                 __retval = write(device_handle, &val, 1); \
  75         } while (0)
  76 #define AMT_AR(val) \
  77         do { \
  78                 int __retval; \
  79                 \
  80                 __retval = ioctl(device_handle, PPSETMODE, &addr_mode); \
  81                 __retval = read(device_handle, &val, 1); \
  82         } while (0)
  83
  84 static const int data_mode = IEEE1284_MODE_EPP | IEEE1284_DATA;
  85
  86 #define AMT_DW(val) \
  87         do { \
  88                 int __retval; \
  89                 \
  90                 __retval = ioctl(device_handle, PPSETMODE, &data_mode); \
  91                 __retval = write(device_handle, &val, 1); \
  92         } while (0)
  93 #define AMT_DR(val) \
  94         do { \
  95                 int __retval; \
  96                 \
  97                 __retval = ioctl(device_handle, PPSETMODE, &data_mode); \
  98                 __retval = read(device_handle, &val, 1); \
  99         } while (0)
 100
 101 #else
 102
 103 #define AMT_AW(val)     do { outb(val, amt_jtagaccel_port + 3); } while (0)
 104 #define AMT_AR(val)     do { val = inb(amt_jtagaccel_port + 3); } while (0)
 105 #define AMT_DW(val)     do { outb(val, amt_jtagaccel_port + 4); } while (0)
 106 #define AMT_DR(val)     do { val = inb(amt_jtagaccel_port + 4); } while (0)
 107
 108 #endif // PARPORT_USE_PPDEV
 109
 110 /* tap_move[i][j]: tap movement command to go from state i to state j
 111  * 0: Test-Logic-Reset
 112  * 1: Run-Test/Idle
 113  * 2: Shift-DR
 114  * 3: Pause-DR
 115  * 4: Shift-IR
 116  * 5: Pause-IR
 117  */
 118 static uint8_t amt_jtagaccel_tap_move[6][6][2] =
 119 {
 120         /*         RESET         IDLE        DRSHIFT       DRPAUSE       IRSHIFT       IRPAUSE             */
 121         {{0x1f, 0x00}, {0x0f, 0x00}, {0x05, 0x00}, {0x0a, 0x00}, {0x06, 0x00}, {0x96, 0x00}},   /* RESET */
 122         {{0x1f, 0x00}, {0x00, 0x00}, {0x04, 0x00}, {0x05, 0x00}, {0x06, 0x00}, {0x0b, 0x00}},   /* IDLE */
 123         {{0x1f, 0x00}, {0x0d, 0x00}, {0x00, 0x00}, {0x01, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}},   /* DRSHIFT  */
 124         {{0x1f, 0x00}, {0x0c, 0x00}, {0x08, 0x00}, {0x00, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}},   /* DRPAUSE  */
 125         {{0x1f, 0x00}, {0x0d, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x00, 0x00}, {0x01, 0x00}},   /* IRSHIFT  */
 126         {{0x1f, 0x00}, {0x0c, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x08, 0x00}, {0x00, 0x00}},   /* IRPAUSE  */
 127 };
 128
 129
 130 static void amt_jtagaccel_reset(int trst, int srst)
 131 {
 132         if (trst == 1)
 133                 aw_control_rst |= 0x4;
 134         else if (trst == 0)
 135                 aw_control_rst &= ~0x4;
 136
 137         if (srst == 1)
 138                 aw_control_rst |= 0x1;
 139         else if (srst == 0)
 140                 aw_control_rst &= ~0x1;
 141
 142         AMT_AW(aw_control_rst);
 143 }
 144
 145 static int amt_jtagaccel_speed(int speed)
 146 {
 147         aw_control_baudrate &= 0xf0;
 148         aw_control_baudrate |= speed & 0x0f;
 149         AMT_AW(aw_control_baudrate);
 150
 151         return ERROR_OK;
 152 }
 153
 154 static void amt_jtagaccel_end_state(tap_state_t state)
 155 {
 156         if (tap_is_state_stable(state))
 157                 tap_set_end_state(state);
 158         else
 159         {
 160                 LOG_ERROR("BUG: %i is not a valid end state", state);
 161                 exit(-1);
 162         }
 163 }
 164
 165 static void amt_wait_scan_busy(void)
 166 {
 167         int timeout = 4096;
 168         uint8_t ar_status;
 169
 170         AMT_AR(ar_status);
 171         while (((ar_status) & 0x80) && (timeout-- > 0))
 172                 AMT_AR(ar_status);
 173
 174         if (ar_status & 0x80)
 175         {
 176                 LOG_ERROR("amt_jtagaccel timed out while waiting for end of scan, rtck was %s, last AR_STATUS: 0x%2.2x", (rtck_enabled) ? "enabled" : "disabled", ar_status);
 177                 exit(-1);
 178         }
 179 }
 180
 181 static void amt_jtagaccel_state_move(void)
 182 {
 183         uint8_t aw_scan_tms_5;
 184         uint8_t tms_scan[2];
 185
 186         tap_state_t     cur_state = tap_get_state();
 187         tap_state_t     end_state = tap_get_end_state();
 188
 189         tms_scan[0] = amt_jtagaccel_tap_move[tap_move_ndx(cur_state)][tap_move_ndx(end_state)][0];
 190         tms_scan[1] = amt_jtagaccel_tap_move[tap_move_ndx(cur_state)][tap_move_ndx(end_state)][1];
 191
 192         aw_scan_tms_5 = 0x40 | (tms_scan[0] & 0x1f);
 193         AMT_AW(aw_scan_tms_5);
 194         int jtag_speed = jtag_get_speed();
 195         if (jtag_speed > 3 || rtck_enabled)
 196                 amt_wait_scan_busy();
 197
 198         if (tms_scan[0] & 0x80)
 199         {
 200                 aw_scan_tms_5 = 0x40 | (tms_scan[1] & 0x1f);
 201                 AMT_AW(aw_scan_tms_5);
 202                 if (jtag_speed > 3 || rtck_enabled)
 203                         amt_wait_scan_busy();
 204         }
 205
 206         tap_set_state(end_state);
 207 }
 208
 209 static void amt_jtagaccel_runtest(int num_cycles)
 210 {
 211         int i = 0;
 212         uint8_t aw_scan_tms_5;
 213         uint8_t aw_scan_tms_1to4;
 214
 215         tap_state_t saved_end_state = tap_get_end_state();
 216
 217         /* only do a state_move when we're not already in IDLE */
 218         if (tap_get_state() != TAP_IDLE)
 219         {
 220                 amt_jtagaccel_end_state(TAP_IDLE);
 221                 amt_jtagaccel_state_move();
 222         }
 223
 224         while (num_cycles - i >= 5)
 225         {
 226                 aw_scan_tms_5 = 0x40;
 227                 AMT_AW(aw_scan_tms_5);
 228                 i += 5;
 229         }
 230
 231         if (num_cycles - i > 0)
 232         {
 233                 aw_scan_tms_1to4 = 0x80 | ((num_cycles - i - 1) & 0x3) << 4;
 234                 AMT_AW(aw_scan_tms_1to4);
 235         }
 236
 237         amt_jtagaccel_end_state(saved_end_state);
 238         if (tap_get_state() != tap_get_end_state())
 239                 amt_jtagaccel_state_move();
 240 }
 241
 242 static void amt_jtagaccel_scan(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size)
 243 {
 244         int bits_left = scan_size;
 245         int bit_count = 0;
 246         tap_state_t saved_end_state = tap_get_end_state();
 247         uint8_t aw_tdi_option;
 248         uint8_t dw_tdi_scan;
 249         uint8_t dr_tdo;
 250         uint8_t aw_tms_scan;
 251         uint8_t tms_scan[2];
 252         int jtag_speed = jtag_get_speed();
 253
 254         if (ir_scan)
 255                 amt_jtagaccel_end_state(TAP_IRSHIFT);
 256         else
 257                 amt_jtagaccel_end_state(TAP_DRSHIFT);
 258
 259         amt_jtagaccel_state_move();
 260         amt_jtagaccel_end_state(saved_end_state);
 261
 262         /* handle unaligned bits at the beginning */
 263         if ((scan_size - 1) % 8)
 264         {
 265                 aw_tdi_option = 0x30 | (((scan_size - 1) % 8) - 1);
 266                 AMT_AW(aw_tdi_option);
 267
 268                 dw_tdi_scan = buf_get_u32(buffer, bit_count, (scan_size - 1) % 8) & 0xff;
 269                 AMT_DW(dw_tdi_scan);
 270                 if (jtag_speed > 3 || rtck_enabled)
 271                         amt_wait_scan_busy();
 272
 273                 if ((type == SCAN_IN) || (type == SCAN_IO))
 274                 {
 275                         AMT_DR(dr_tdo);
 276                         dr_tdo = dr_tdo >> (8 - ((scan_size - 1) % 8));
 277                         buf_set_u32(buffer, bit_count, (scan_size - 1) % 8, dr_tdo);
 278                 }
 279
 280                 bit_count += (scan_size - 1) % 8;
 281                 bits_left -= (scan_size - 1) % 8;
 282         }
 283
 284         while (bits_left - 1 >= 8)
 285         {
 286                 dw_tdi_scan = buf_get_u32(buffer, bit_count, 8) & 0xff;
 287                 AMT_DW(dw_tdi_scan);
 288                 if (jtag_speed > 3 || rtck_enabled)
 289                         amt_wait_scan_busy();
 290
 291                 if ((type == SCAN_IN) || (type == SCAN_IO))
 292                 {
 293                         AMT_DR(dr_tdo);
 294                         buf_set_u32(buffer, bit_count, 8, dr_tdo);
 295                 }
 296
 297                 bit_count += 8;
 298                 bits_left -= 8;
 299         }
 300
 301         tms_scan[0] = amt_jtagaccel_tap_move[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())][0];
 302         tms_scan[1] = amt_jtagaccel_tap_move[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())][1];
 303         aw_tms_scan = 0x40 | (tms_scan[0] & 0x1f) | (buf_get_u32(buffer, bit_count, 1) << 5);
 304         AMT_AW(aw_tms_scan);
 305         if (jtag_speed > 3 || rtck_enabled)
 306                 amt_wait_scan_busy();
 307
 308         if ((type == SCAN_IN) || (type == SCAN_IO))
 309         {
 310                 AMT_DR(dr_tdo);
 311                 dr_tdo = dr_tdo >> 7;
 312                 buf_set_u32(buffer, bit_count, 1, dr_tdo);
 313         }
 314
 315         if (tms_scan[0] & 0x80)
 316         {
 317                 aw_tms_scan = 0x40 | (tms_scan[1] & 0x1f);
 318                 AMT_AW(aw_tms_scan);
 319                 if (jtag_speed > 3 || rtck_enabled)
 320                         amt_wait_scan_busy();
 321         }
 322         tap_set_state(tap_get_end_state());
 323 }
 324
 325 static int amt_jtagaccel_execute_queue(void)
 326 {
 327         struct jtag_command *cmd = jtag_command_queue; /* currently processed command */
 328         int scan_size;
 329         enum scan_type type;
 330         uint8_t *buffer;
 331         int retval;
 332
 333         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 334          * that wasn't handled by a caller-provided error handler
 335          */
 336         retval = ERROR_OK;
 337
 338         while (cmd)
 339         {
 340                 switch (cmd->type)
 341                 {
 342                         case JTAG_RESET:
 343 #ifdef _DEBUG_JTAG_IO_
 344                                 LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 345 #endif
 346                                 if (cmd->cmd.reset->trst == 1)
 347                                 {
 348                                         tap_set_state(TAP_RESET);
 349                                 }
 350                                 amt_jtagaccel_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 351                                 break;
 352                         case JTAG_RUNTEST:
 353 #ifdef _DEBUG_JTAG_IO_
 354                                 LOG_DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
 355 #endif
 356                                 amt_jtagaccel_end_state(cmd->cmd.runtest->end_state);
 357                                 amt_jtagaccel_runtest(cmd->cmd.runtest->num_cycles);
 358                                 break;
 359                         case JTAG_STATEMOVE:
 360 #ifdef _DEBUG_JTAG_IO_
 361                                 LOG_DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
 362 #endif
 363                                 amt_jtagaccel_end_state(cmd->cmd.statemove->end_state);
 364                                 amt_jtagaccel_state_move();
 365                                 break;
 366                         case JTAG_SCAN:
 367 #ifdef _DEBUG_JTAG_IO_
 368                                 LOG_DEBUG("scan end in %i", cmd->cmd.scan->end_state);
 369 #endif
 370                                 amt_jtagaccel_end_state(cmd->cmd.scan->end_state);
 371                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
 372                                 type = jtag_scan_type(cmd->cmd.scan);
 373                                 amt_jtagaccel_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
 374                                 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 375                                         retval = ERROR_JTAG_QUEUE_FAILED;
 376                                 if (buffer)
 377                                         free(buffer);
 378                                 break;
 379                         case JTAG_SLEEP:
 380 #ifdef _DEBUG_JTAG_IO_
 381                                 LOG_DEBUG("sleep %" PRIi32, cmd->cmd.sleep->us);
 382 #endif
 383                                 jtag_sleep(cmd->cmd.sleep->us);
 384                                 break;
 385                         default:
 386                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
 387                                 exit(-1);
 388                 }
 389                 cmd = cmd->next;
 390         }
 391
 392         return retval;
 393 }
 394
 395 #if PARPORT_USE_GIVEIO == 1
 396 int amt_jtagaccel_get_giveio_access(void)
 397 {
 398         HANDLE h;
 399         OSVERSIONINFO version;
 400
 401         version.dwOSVersionInfoSize = sizeof version;
 402         if (!GetVersionEx(&version)) {
 403         errno = EINVAL;
 404         return -1;
 405         }
 406         if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
 407         return 0;
 408
 409         h = CreateFile("\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
 410         if (h == INVALID_HANDLE_VALUE) {
 411         errno = ENODEV;
 412         return -1;
 413         }
 414
 415         CloseHandle(h);
 416
 417         return 0;
 418 }
 419 #endif
 420
 421 static int amt_jtagaccel_init(void)
 422 {
 423 #if PARPORT_USE_PPDEV == 1
 424         char buffer[256];
 425         int i = 0;
 426         uint8_t control_port;
 427 #else
 428         uint8_t status_port;
 429 #endif
 430         uint8_t ar_status;
 431
 432 #if PARPORT_USE_PPDEV == 1
 433         if (device_handle > 0)
 434         {
 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         {
 444                 LOG_ERROR("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         {
 451                 LOG_ERROR("cannot claim device");
 452                 return ERROR_JTAG_INIT_FAILED;
 453         }
 454
 455         i = IEEE1284_MODE_EPP;
 456         i = ioctl(device_handle, PPSETMODE, & i);
 457         if (i < 0)
 458         {
 459                 LOG_ERROR(" cannot set compatible mode to device");
 460                 return ERROR_JTAG_INIT_FAILED;
 461         }
 462
 463         control_port = 0x00;
 464         i = ioctl(device_handle, PPWCONTROL, &control_port);
 465
 466         control_port = 0x04;
 467         i = ioctl(device_handle, PPWCONTROL, &control_port);
 468
 469 #else
 470         if (amt_jtagaccel_port == 0)
 471         {
 472                 amt_jtagaccel_port = 0x378;
 473                 LOG_WARNING("No parport port specified, using default '0x378' (LPT1)");
 474         }
 475
 476 #if PARPORT_USE_GIVEIO == 1
 477         if (amt_jtagaccel_get_giveio_access() != 0) {
 478 #else /* PARPORT_USE_GIVEIO */
 479         if (ioperm(amt_jtagaccel_port, 5, 1) != 0) {
 480 #endif /* PARPORT_USE_GIVEIO */
 481                 LOG_ERROR("missing privileges for direct i/o");
 482                 return ERROR_JTAG_INIT_FAILED;
 483         }
 484
 485         /* prepare epp port */
 486         /* clear timeout */
 487         status_port = inb(amt_jtagaccel_port + 1);
 488         outb(status_port | 0x1, amt_jtagaccel_port + 1);
 489
 490         /* reset epp port */
 491         outb(0x00, amt_jtagaccel_port + 2);
 492         outb(0x04, amt_jtagaccel_port + 2);
 493 #endif
 494
 495         if (rtck_enabled)
 496         {
 497                 /* set RTCK enable bit */
 498                 aw_control_fsm |= 0x02;
 499         }
 500
 501         /* enable JTAG port */
 502         aw_control_fsm |= 0x04;
 503         AMT_AW(aw_control_fsm);
 504
 505         amt_jtagaccel_speed(jtag_get_speed());
 506
 507         enum reset_types jtag_reset_config = jtag_get_reset_config();
 508         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 509                 aw_control_rst &= ~0x8;
 510         else
 511                 aw_control_rst |= 0x8;
 512
 513         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 514                 aw_control_rst &= ~0x2;
 515         else
 516                 aw_control_rst |= 0x2;
 517
 518         amt_jtagaccel_reset(0, 0);
 519
 520         /* read status register */
 521         AMT_AR(ar_status);
 522         LOG_DEBUG("AR_STATUS: 0x%2.2x", ar_status);
 523
 524         return ERROR_OK;
 525 }
 526
 527 static int amt_jtagaccel_quit(void)
 528 {
 529
 530         return ERROR_OK;
 531 }
 532
 533 COMMAND_HANDLER(amt_jtagaccel_handle_parport_port_command)
 534 {
 535         if (CMD_ARGC == 1)
 536         {
 537                 /* only if the port wasn't overwritten by cmdline */
 538                 if (amt_jtagaccel_port == 0)
 539                 {
 540                         uint16_t port;
 541                         COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], port);
 542                         amt_jtagaccel_port = port;
 543                 }
 544                 else
 545                 {
 546                         LOG_ERROR("The parport port was already configured!");
 547                         return ERROR_FAIL;
 548                 }
 549         }
 550
 551         command_print(CMD_CTX, "parport port = %u", amt_jtagaccel_port);
 552
 553         return ERROR_OK;
 554 }
 555
 556 COMMAND_HANDLER(amt_jtagaccel_handle_rtck_command)
 557 {
 558         if (CMD_ARGC == 0)
 559         {
 560                 command_print(CMD_CTX, "amt_jtagaccel RTCK feature %s", (rtck_enabled) ? "enabled" : "disabled");
 561                 return ERROR_OK;
 562         }
 563         else
 564         {
 565                 if (strcmp(CMD_ARGV[0], "enabled") == 0)
 566                 {
 567                         rtck_enabled = 1;
 568                 }
 569                 else
 570                 {
 571                         rtck_enabled = 0;
 572                 }
 573         }
 574
 575         return ERROR_OK;
 576 }
 577
 578 static const struct command_registration amtjtagaccel_command_handlers[] = {
 579         {
 580                 .name = "parport_port",
 581                 .handler = &amt_jtagaccel_handle_parport_port_command,
 582                 .mode = COMMAND_CONFIG,
 583                 .help = "configure or display the parallel port to use",
 584                 .usage = "[port_num]",
 585         },
 586         {
 587                 /**
 588                  * @todo Remove this "rtck" command; just use the standard
 589                  * mechanism to enable/disable adaptive clocking.  First
 590                  * implement the standard mechanism and deprecate "rtck";
 591                  * after a year or so, it'll be safe to remove this.
 592                  */
 593                 .name = "rtck",
 594                 .handler = &amt_jtagaccel_handle_rtck_command,
 595                 .mode = COMMAND_CONFIG,
 596                 .help = "configure or display RTCK support",
 597                 .usage = "[enable|disable]",
 598         },
 599         COMMAND_REGISTRATION_DONE
 600 };
 601
 602 struct jtag_interface amt_jtagaccel_interface = {
 603         .name = "amt_jtagaccel",
 604         .commands = amtjtagaccel_command_handlers,
 605
 606         .init = amt_jtagaccel_init,
 607         .quit = amt_jtagaccel_quit,
 608         .speed = amt_jtagaccel_speed,
 609         .execute_queue = amt_jtagaccel_execute_queue,
 610 };