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                 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 uint8_t amt_jtagaccel_tap_move[6][6][2] =
 127 {
 128         /*         RESET         IDLE        DRSHIFT       DRPAUSE       IRSHIFT       IRPAUSE             */
 129         {{0x1f, 0x00}, {0x0f, 0x00}, {0x05, 0x00}, {0x0a, 0x00}, {0x06, 0x00}, {0x96, 0x00}},   /* RESET */
 130         {{0x1f, 0x00}, {0x00, 0x00}, {0x04, 0x00}, {0x05, 0x00}, {0x06, 0x00}, {0x0b, 0x00}},   /* IDLE */
 131         {{0x1f, 0x00}, {0x0d, 0x00}, {0x00, 0x00}, {0x01, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}},   /* DRSHIFT  */
 132         {{0x1f, 0x00}, {0x0c, 0x00}, {0x08, 0x00}, {0x00, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}},   /* DRPAUSE  */
 133         {{0x1f, 0x00}, {0x0d, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x00, 0x00}, {0x01, 0x00}},   /* IRSHIFT  */
 134         {{0x1f, 0x00}, {0x0c, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x08, 0x00}, {0x00, 0x00}},   /* IRPAUSE  */
 135 };
 136
 137
 138 static void amt_jtagaccel_reset(int trst, int srst)
 139 {
 140         if (trst == 1)
 141                 aw_control_rst |= 0x4;
 142         else if (trst == 0)
 143                 aw_control_rst &= ~0x4;
 144
 145         if (srst == 1)
 146                 aw_control_rst |= 0x1;
 147         else if (srst == 0)
 148                 aw_control_rst &= ~0x1;
 149
 150         AMT_AW(aw_control_rst);
 151 }
 152
 153 static int amt_jtagaccel_speed(int speed)
 154 {
 155         aw_control_baudrate &= 0xf0;
 156         aw_control_baudrate |= speed & 0x0f;
 157         AMT_AW(aw_control_baudrate);
 158
 159         return ERROR_OK;
 160 }
 161
 162 static void amt_jtagaccel_end_state(tap_state_t state)
 163 {
 164         if (tap_is_state_stable(state))
 165                 tap_set_end_state(state);
 166         else
 167         {
 168                 LOG_ERROR("BUG: %i is not a valid end state", state);
 169                 exit(-1);
 170         }
 171 }
 172
 173 static void amt_wait_scan_busy(void)
 174 {
 175         int timeout = 4096;
 176         uint8_t ar_status;
 177
 178         AMT_AR(ar_status);
 179         while (((ar_status) & 0x80) && (timeout-- > 0))
 180                 AMT_AR(ar_status);
 181
 182         if (ar_status & 0x80)
 183         {
 184                 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);
 185                 exit(-1);
 186         }
 187 }
 188
 189 static void amt_jtagaccel_state_move(void)
 190 {
 191         uint8_t aw_scan_tms_5;
 192         uint8_t tms_scan[2];
 193
 194         tap_state_t     cur_state = tap_get_state();
 195         tap_state_t     end_state = tap_get_end_state();
 196
 197         tms_scan[0] = amt_jtagaccel_tap_move[tap_move_ndx(cur_state)][tap_move_ndx(end_state)][0];
 198         tms_scan[1] = amt_jtagaccel_tap_move[tap_move_ndx(cur_state)][tap_move_ndx(end_state)][1];
 199
 200         aw_scan_tms_5 = 0x40 | (tms_scan[0] & 0x1f);
 201         AMT_AW(aw_scan_tms_5);
 202         int jtag_speed=0;
 203         int retval = jtag_get_speed(&jtag_speed);
 204         assert(retval == ERROR_OK);
 205         if (jtag_speed > 3 || rtck_enabled)
 206                 amt_wait_scan_busy();
 207
 208         if (tms_scan[0] & 0x80)
 209         {
 210                 aw_scan_tms_5 = 0x40 | (tms_scan[1] & 0x1f);
 211                 AMT_AW(aw_scan_tms_5);
 212                 if (jtag_speed > 3 || rtck_enabled)
 213                         amt_wait_scan_busy();
 214         }
 215
 216         tap_set_state(end_state);
 217 }
 218
 219 static void amt_jtagaccel_runtest(int num_cycles)
 220 {
 221         int i = 0;
 222         uint8_t aw_scan_tms_5;
 223         uint8_t aw_scan_tms_1to4;
 224
 225         tap_state_t saved_end_state = tap_get_end_state();
 226
 227         /* only do a state_move when we're not already in IDLE */
 228         if (tap_get_state() != TAP_IDLE)
 229         {
 230                 amt_jtagaccel_end_state(TAP_IDLE);
 231                 amt_jtagaccel_state_move();
 232         }
 233
 234         while (num_cycles - i >= 5)
 235         {
 236                 aw_scan_tms_5 = 0x40;
 237                 AMT_AW(aw_scan_tms_5);
 238                 i += 5;
 239         }
 240
 241         if (num_cycles - i > 0)
 242         {
 243                 aw_scan_tms_1to4 = 0x80 | ((num_cycles - i - 1) & 0x3) << 4;
 244                 AMT_AW(aw_scan_tms_1to4);
 245         }
 246
 247         amt_jtagaccel_end_state(saved_end_state);
 248         if (tap_get_state() != tap_get_end_state())
 249                 amt_jtagaccel_state_move();
 250 }
 251
 252 static void amt_jtagaccel_scan(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size)
 253 {
 254         int bits_left = scan_size;
 255         int bit_count = 0;
 256         tap_state_t saved_end_state = tap_get_end_state();
 257         uint8_t aw_tdi_option;
 258         uint8_t dw_tdi_scan;
 259         uint8_t dr_tdo;
 260         uint8_t aw_tms_scan;
 261         uint8_t tms_scan[2];
 262         int jtag_speed_var;
 263         int retval = jtag_get_speed(&jtag_speed_var);
 264         assert(retval == ERROR_OK);
 265
 266         if (ir_scan)
 267                 amt_jtagaccel_end_state(TAP_IRSHIFT);
 268         else
 269                 amt_jtagaccel_end_state(TAP_DRSHIFT);
 270
 271         amt_jtagaccel_state_move();
 272         amt_jtagaccel_end_state(saved_end_state);
 273
 274         /* handle unaligned bits at the beginning */
 275         if ((scan_size - 1) % 8)
 276         {
 277                 aw_tdi_option = 0x30 | (((scan_size - 1) % 8) - 1);
 278                 AMT_AW(aw_tdi_option);
 279
 280                 dw_tdi_scan = buf_get_u32(buffer, bit_count, (scan_size - 1) % 8) & 0xff;
 281                 AMT_DW(dw_tdi_scan);
 282                 if (jtag_speed_var > 3 || rtck_enabled)
 283                         amt_wait_scan_busy();
 284
 285                 if ((type == SCAN_IN) || (type == SCAN_IO))
 286                 {
 287                         AMT_DR(dr_tdo);
 288                         dr_tdo = dr_tdo >> (8 - ((scan_size - 1) % 8));
 289                         buf_set_u32(buffer, bit_count, (scan_size - 1) % 8, dr_tdo);
 290                 }
 291
 292                 bit_count += (scan_size - 1) % 8;
 293                 bits_left -= (scan_size - 1) % 8;
 294         }
 295
 296         while (bits_left - 1 >= 8)
 297         {
 298                 dw_tdi_scan = buf_get_u32(buffer, bit_count, 8) & 0xff;
 299                 AMT_DW(dw_tdi_scan);
 300                 if (jtag_speed_var > 3 || rtck_enabled)
 301                         amt_wait_scan_busy();
 302
 303                 if ((type == SCAN_IN) || (type == SCAN_IO))
 304                 {
 305                         AMT_DR(dr_tdo);
 306                         buf_set_u32(buffer, bit_count, 8, dr_tdo);
 307                 }
 308
 309                 bit_count += 8;
 310                 bits_left -= 8;
 311         }
 312
 313         tms_scan[0] = amt_jtagaccel_tap_move[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())][0];
 314         tms_scan[1] = amt_jtagaccel_tap_move[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())][1];
 315         aw_tms_scan = 0x40 | (tms_scan[0] & 0x1f) | (buf_get_u32(buffer, bit_count, 1) << 5);
 316         AMT_AW(aw_tms_scan);
 317         if (jtag_speed_var > 3 || rtck_enabled)
 318                 amt_wait_scan_busy();
 319
 320         if ((type == SCAN_IN) || (type == SCAN_IO))
 321         {
 322                 AMT_DR(dr_tdo);
 323                 dr_tdo = dr_tdo >> 7;
 324                 buf_set_u32(buffer, bit_count, 1, dr_tdo);
 325         }
 326
 327         if (tms_scan[0] & 0x80)
 328         {
 329                 aw_tms_scan = 0x40 | (tms_scan[1] & 0x1f);
 330                 AMT_AW(aw_tms_scan);
 331                 if (jtag_speed_var > 3 || rtck_enabled)
 332                         amt_wait_scan_busy();
 333         }
 334         tap_set_state(tap_get_end_state());
 335 }
 336
 337 static int amt_jtagaccel_execute_queue(void)
 338 {
 339         struct jtag_command *cmd = jtag_command_queue; /* currently processed command */
 340         int scan_size;
 341         enum scan_type type;
 342         uint8_t *buffer;
 343         int retval;
 344
 345         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 346          * that wasn't handled by a caller-provided error handler
 347          */
 348         retval = ERROR_OK;
 349
 350         while (cmd)
 351         {
 352                 switch (cmd->type)
 353                 {
 354                         case JTAG_RESET:
 355 #ifdef _DEBUG_JTAG_IO_
 356                                 LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 357 #endif
 358                                 if (cmd->cmd.reset->trst == 1)
 359                                 {
 360                                         tap_set_state(TAP_RESET);
 361                                 }
 362                                 amt_jtagaccel_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 363                                 break;
 364                         case JTAG_RUNTEST:
 365 #ifdef _DEBUG_JTAG_IO_
 366                                 LOG_DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
 367 #endif
 368                                 amt_jtagaccel_end_state(cmd->cmd.runtest->end_state);
 369                                 amt_jtagaccel_runtest(cmd->cmd.runtest->num_cycles);
 370                                 break;
 371                         case JTAG_TLR_RESET:
 372 #ifdef _DEBUG_JTAG_IO_
 373                                 LOG_DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
 374 #endif
 375                                 amt_jtagaccel_end_state(cmd->cmd.statemove->end_state);
 376                                 amt_jtagaccel_state_move();
 377                                 break;
 378                         case JTAG_SCAN:
 379 #ifdef _DEBUG_JTAG_IO_
 380                                 LOG_DEBUG("scan end in %i", cmd->cmd.scan->end_state);
 381 #endif
 382                                 amt_jtagaccel_end_state(cmd->cmd.scan->end_state);
 383                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
 384                                 type = jtag_scan_type(cmd->cmd.scan);
 385                                 amt_jtagaccel_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
 386                                 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 387                                         retval = ERROR_JTAG_QUEUE_FAILED;
 388                                 if (buffer)
 389                                         free(buffer);
 390                                 break;
 391                         case JTAG_SLEEP:
 392 #ifdef _DEBUG_JTAG_IO_
 393                                 LOG_DEBUG("sleep %" PRIi32, cmd->cmd.sleep->us);
 394 #endif
 395                                 jtag_sleep(cmd->cmd.sleep->us);
 396                                 break;
 397                         default:
 398                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
 399                                 exit(-1);
 400                 }
 401                 cmd = cmd->next;
 402         }
 403
 404         return retval;
 405 }
 406
 407 #if PARPORT_USE_GIVEIO == 1
 408 int amt_jtagaccel_get_giveio_access(void)
 409 {
 410         HANDLE h;
 411         OSVERSIONINFO version;
 412
 413         version.dwOSVersionInfoSize = sizeof version;
 414         if (!GetVersionEx(&version)) {
 415         errno = EINVAL;
 416         return -1;
 417         }
 418         if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
 419         return 0;
 420
 421         h = CreateFile("\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
 422         if (h == INVALID_HANDLE_VALUE) {
 423         errno = ENODEV;
 424         return -1;
 425         }
 426
 427         CloseHandle(h);
 428
 429         return 0;
 430 }
 431 #endif
 432
 433 static int amt_jtagaccel_init(void)
 434 {
 435 #if PARPORT_USE_PPDEV == 1
 436         char buffer[256];
 437         int i = 0;
 438         uint8_t control_port;
 439 #else
 440         uint8_t status_port;
 441 #endif
 442         uint8_t ar_status;
 443
 444 #if PARPORT_USE_PPDEV == 1
 445         if (device_handle > 0)
 446         {
 447                 LOG_ERROR("device is already opened");
 448                 return ERROR_JTAG_INIT_FAILED;
 449         }
 450
 451         snprintf(buffer, 256, "/dev/parport%d", amt_jtagaccel_port);
 452         device_handle = open(buffer, O_RDWR);
 453
 454         if (device_handle < 0)
 455         {
 456                 LOG_ERROR("cannot open device. check it exists and that user read and write rights are set");
 457                 return ERROR_JTAG_INIT_FAILED;
 458         }
 459
 460         i = ioctl(device_handle, PPCLAIM);
 461         if (i < 0)
 462         {
 463                 LOG_ERROR("cannot claim device");
 464                 return ERROR_JTAG_INIT_FAILED;
 465         }
 466
 467         i = IEEE1284_MODE_EPP;
 468         i = ioctl(device_handle, PPSETMODE, & i);
 469         if (i < 0)
 470         {
 471                 LOG_ERROR(" cannot set compatible mode to device");
 472                 return ERROR_JTAG_INIT_FAILED;
 473         }
 474
 475         control_port = 0x00;
 476         i = ioctl(device_handle, PPWCONTROL, &control_port);
 477
 478         control_port = 0x04;
 479         i = ioctl(device_handle, PPWCONTROL, &control_port);
 480
 481 #else
 482         if (amt_jtagaccel_port == 0)
 483         {
 484                 amt_jtagaccel_port = 0x378;
 485                 LOG_WARNING("No parport port specified, using default '0x378' (LPT1)");
 486         }
 487
 488 #if PARPORT_USE_GIVEIO == 1
 489         if (amt_jtagaccel_get_giveio_access() != 0) {
 490 #else /* PARPORT_USE_GIVEIO */
 491         if (ioperm(amt_jtagaccel_port, 5, 1) != 0) {
 492 #endif /* PARPORT_USE_GIVEIO */
 493                 LOG_ERROR("missing privileges for direct i/o");
 494                 return ERROR_JTAG_INIT_FAILED;
 495         }
 496
 497         /* prepare epp port */
 498         /* clear timeout */
 499         status_port = inb(amt_jtagaccel_port + 1);
 500         outb(status_port | 0x1, amt_jtagaccel_port + 1);
 501
 502         /* reset epp port */
 503         outb(0x00, amt_jtagaccel_port + 2);
 504         outb(0x04, amt_jtagaccel_port + 2);
 505 #endif
 506
 507         if (rtck_enabled)
 508         {
 509                 /* set RTCK enable bit */
 510                 aw_control_fsm |= 0x02;
 511         }
 512
 513         /* enable JTAG port */
 514         aw_control_fsm |= 0x04;
 515         AMT_AW(aw_control_fsm);
 516
 517         enum reset_types jtag_reset_config = jtag_get_reset_config();
 518         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 519                 aw_control_rst &= ~0x8;
 520         else
 521                 aw_control_rst |= 0x8;
 522
 523         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 524                 aw_control_rst &= ~0x2;
 525         else
 526                 aw_control_rst |= 0x2;
 527
 528         amt_jtagaccel_reset(0, 0);
 529
 530         /* read status register */
 531         AMT_AR(ar_status);
 532         LOG_DEBUG("AR_STATUS: 0x%2.2x", ar_status);
 533
 534         return ERROR_OK;
 535 }
 536
 537 static int amt_jtagaccel_quit(void)
 538 {
 539
 540         return ERROR_OK;
 541 }
 542
 543 COMMAND_HANDLER(amt_jtagaccel_handle_parport_port_command)
 544 {
 545         if (CMD_ARGC == 1)
 546         {
 547                 /* only if the port wasn't overwritten by cmdline */
 548                 if (amt_jtagaccel_port == 0)
 549                 {
 550                         uint16_t port;
 551                         COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], port);
 552                         amt_jtagaccel_port = port;
 553                 }
 554                 else
 555                 {
 556                         LOG_ERROR("The parport port was already configured!");
 557                         return ERROR_FAIL;
 558                 }
 559         }
 560
 561         command_print(CMD_CTX, "parport port = %u", amt_jtagaccel_port);
 562
 563         return ERROR_OK;
 564 }
 565
 566 COMMAND_HANDLER(amt_jtagaccel_handle_rtck_command)
 567 {
 568         if (CMD_ARGC == 0)
 569         {
 570                 command_print(CMD_CTX, "amt_jtagaccel RTCK feature %s", (rtck_enabled) ? "enabled" : "disabled");
 571                 return ERROR_OK;
 572         }
 573         else
 574         {
 575                 if (strcmp(CMD_ARGV[0], "enabled") == 0)
 576                 {
 577                         rtck_enabled = 1;
 578                 }
 579                 else
 580                 {
 581                         rtck_enabled = 0;
 582                 }
 583         }
 584
 585         return ERROR_OK;
 586 }
 587
 588 static const struct command_registration amtjtagaccel_command_handlers[] = {
 589         {
 590                 .name = "parport_port",
 591                 .handler = &amt_jtagaccel_handle_parport_port_command,
 592                 .mode = COMMAND_CONFIG,
 593                 .help = "configure or display the parallel port to use",
 594                 .usage = "[port_num]",
 595         },
 596         {
 597                 /**
 598                  * @todo Remove this "rtck" command; just use the standard
 599                  * mechanism to enable/disable adaptive clocking.  First
 600                  * implement the standard mechanism and deprecate "rtck";
 601                  * after a year or so, it'll be safe to remove this.
 602                  */
 603                 .name = "rtck",
 604                 .handler = &amt_jtagaccel_handle_rtck_command,
 605                 .mode = COMMAND_CONFIG,
 606                 .help = "configure or display RTCK support",
 607                 .usage = "[enable|disable]",
 608         },
 609         COMMAND_REGISTRATION_DONE
 610 };
 611
 612 struct jtag_interface amt_jtagaccel_interface = {
 613         .name = "amt_jtagaccel",
 614         .commands = amtjtagaccel_command_handlers,
 615
 616         .init = amt_jtagaccel_init,
 617         .quit = amt_jtagaccel_quit,
 618         .speed = amt_jtagaccel_speed,
 619         .execute_queue = amt_jtagaccel_execute_queue,
 620 };